• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The refrigerator has a machine room (7), which is arranged below the work space (2b). In the engine room, the compressor (5) and the refrigerant condenser (6) of the heat pump are arranged. Further, a fan (20) is provided, which sucks the air from below and behind in the engine room (7). The air initially passes around the compressor (5) and then passes through the refrigerant condenser (6). Then it enters a deflection channel (22), in which it is deflected and returned to the back of the device to the fan (20). The fan (20) is designed as a radial fan and blows the air backwards out of the device. The arrangement of the components is compact and allows to use the refrigerator in existing equipment.
    公开号:CH713485A2
    申请号:CH00877/18
    申请日:2018-07-16
    公开日:2018-09-28
    发明作者:Schropp Christian；Diana Emanuele；Lantody Matyas；Hänsch Andreas；Bachmann Adrian
    申请人:V Zug Ag；
    IPC主号:
    专利说明:

    description
    FIELD OF THE INVENTION The invention relates to a refrigerating appliance, in particular for food, according to the preamble of claim 1. In particular, the refrigerating appliance has an engine room arranged at least partly below the utility space, in which a fan and the compressor and the refrigerant condenser of the heat pump are arranged. The invention also relates to the use of such a refrigerator in an installation niche.
    BACKGROUND [0002] In heat pump refrigerators, the evaporator serves to cool the utility space while the condenser must be heated and cooled. There are devices with active cooling in which a fan is provided to cool the refrigerant condenser with ambient air.
    The fan as well as the refrigerant condenser and the compressor of the heat pump may e.g. be arranged in a machine room below the work space.
    It is an object of the invention to provide an air guide in a cooling device of this type.
    This object is achieved by the cooling device according to claim 1.
    Accordingly, the refrigerator has at least the following parts: - A housing: This includes the device and forms its outside. - A usable space: This serves to accommodate the refrigerated goods. These may be food in particular. It is also possible to provide a plurality of utility rooms, in particular one above the other, which may be e.g. designed for cooling at different temperatures. - A door: The door is by definition located on the front of the housing, i. the side where the door is located is called the front. The utility room is accessible via the door. - A heat pump: This includes at least one compressor for conveying a heat pump medium, an evaporator for cooling the work space and a refrigerant condenser. However, e.g. Also, several evaporators may be provided for cooling a plurality of utility rooms. A fan: The fan is designed to cool the refrigerant condenser with ambient air, i. requires ambient air through the refrigerant condenser. - An at least partially below the work space arranged engine room: In the engine room, the fan, the compressor and the refrigerant condenser are arranged.
    According to claim, the fan and the engine room are designed such that with the fan, the ambient air for cooling the refrigerant condenser can be sucked from below and / or behind in the housing of the refrigerator and blown out to the rear.
    Advantageously, the fan and the engine room are designed such that with the fan, the ambient air can also be performed to the compressor to cool this.
    In a compact variant, the compressor and / or the fan is located further back in the device than the refrigerant condenser. In particular, at least a part of the compressor and / or the fan is arranged horizontally behind the refrigerant condenser.
    Advantageously, the device is designed so that with the fan, the ambient air can first be performed around the compressor to cool it. Then, the air is passed through the refrigerant condenser to also cool the refrigerant condenser.
    Further, the refrigerant condenser may be configured less high than the compressor. In this case, the circumstance is complied that the refrigerant condenser with respect to design more freedom than the compressor. By this measure, the usable space can be increased towards the bottom. This is particularly advantageous when the compressor is at least partially disposed behind the refrigerant condenser.
    Advantageously, the fan is configured as at least partial radial fan and / or its axis of rotation is substantially perpendicular to the back of the refrigerator. By "substantially perpendicular to the back" is to be understood in particular that the angle between the axis of rotation of the fan and the perpendicular to the back is less than 20 °, in particular less than 10 °.
    Due to the vertical arrangement of the axis of rotation, the air can be sucked substantially horizontally in the fan and then be deflected approximately perpendicular thereto. This deflection facilitates the realization of a more compact design.
    Further, it is advantageous if the fan sucks in the air from the refrigerant condenser, i. E. when the air first flows through the refrigerant condenser and then through the fan. In this case, the pollution on the fan is reduced. This is important because the efficiency of the fan decreases sharply with increasing pollution.
    This is particularly in connection with the above-mentioned embodiment of the radial fan with axis of rotation substantially perpendicular to the back of advantage. In this case, the air can be drawn in horizontally and then deflected approximately perpendicularly for delivery.
    By a separating lip on the rear of the device better separation of the exhaust air and supply air can be achieved by the risk is reduced that the exhaust air is sucked out of the fan housing back into the refrigerant condenser. This is particularly advantageous at high ambient temperature.
    Preferably, the ambient air from the fan can be performed directly to an air discharge area at the back of the refrigerator. The term "direct" means that it does not come into direct heat exchange with either the compressor or the condenser refrigerant condenser.
    The inventive cooling device is particularly well suited for cooling food. The device is particularly suitable as a household refrigerator or household freezer, e.g. for installation in an installation niche.
    Accordingly, the invention also relates to the use of the refrigerator in an installation niche, wherein the exiting from the engine room air is passed through a gap between the rear wall of the refrigerator and the niche rear wall upwards.
    BRIEF DESCRIPTION OF THE DRAWINGS Further embodiments, advantages and applications of the invention will become apparent from the dependent claims and from the following description with reference to the figures. Showing:
    1 is a view of a cooling device,
    2 shows a vertical section through the cooling device of FIG. 1, with the sectional plane perpendicular to the closed door, wherein the cooling device is arranged in an installation niche,
    3 is a first view of the engine room,
    4 the engine room of FIG. 4 without fan cover, FIG.
    5 is a second view of the engine room,
    6 is a third view of the engine room,
    7 shows a first section through the machine room in the region of the fan axis,
    8 is a second section through the engine room in the region of the compressor and the refrigerant condenser,
    Fig. 9 is a Cordier diagram for the fan. In Fig. 3 to 6 of the engine room is shown without cover plate.
    Ways to carry out the invention
    Definitions: The terms "rear", "rear", "rear", "front", "forward", "front" are defined so that the front door of the refrigerator, i. located on the front, while the back arranged on the back of the device refers to the door opposite device side.
    Terms such as "top", "bottom", "horizontal" and "vertical" refer to the intended orientation of the device, in which the door is vertical.
    Basic Construction: The refrigerator shown in Figs. 1 and 2 has a housing 1 in which the device components are arranged.
    In the embodiment shown in the housing 1 two utility rooms 2a, 2b are arranged. Each usable space 2a, 2b is accessible from the front of the device via a door 3a or 3b.
    For cooling the utility rooms 2a, 2b, a heat pump is provided. This comprises one or, in the present example, a plurality of evaporators 4a, 4b, a compressor 5 and a refrigerant condenser 6.
    Preferably, the first working space 2a is a refrigerating compartment with a temperature range of e.g. 0 ° C to 10 ° C and the second usable space 2b as a freezing compartment with a temperature range of e.g. -25 ° C to -10 ° C designed.
    The evaporators 4a, 4b are e.g. in each case arranged at the rear side of their assigned usable space 2a, 2b.
    In the bottom region of the device, in the present example, at least partially below the lowest usable space 2b, a machine room 7 is provided, which is outlined in Fig. 2 with a bold line.
    In the engine room, a fan is arranged (not shown in FIGS. 1 and 2). The fan serves to suck in ambient air into the machine room 7 from behind and / or below. In the engine room 7, the air is used to cool the compressor and the refrigerant condenser. The air is finally released back out of the engine room.
    This makes it possible to produce a cooling air flow, as shown in dashed lines in Fig. 2. First, the air is sucked back under the device (arrows 8a, 8b) before entering the work space 7. After exiting the air from the engine room 7, this sweeps along the rear side of the device upwards (arrow 8c).
    This air flow makes it possible to arrange the device in a niche 10 of the type shown in Fig. 2. In particular, the niche may have a carrier 12, under which a gap 14 is recessed between the carrier and the niche bottom 15. Through this gap 14, the ambient air can first be sucked in under the engine room 7 and then from below and / or back into the engine room 7.
    The exhaust air is then passed through a gap 16 between the rear wall of the refrigerator and the niche rear wall 18 upwards.
    Such niches are used for conventional refrigerators, in which the refrigerant condenser is arranged on the rear wall. Thanks to the embodiment shown, in which the ambient air is sucked from the rear and / or down into the engine room 7 and then blown out backwards, the present device can be used in such conventional, standardized niches.
    In order to prevent sucked and blown air mixing, a separating lip 19 may be arranged on the back of the refrigerator. She stands transversely to the back over this backwards and is flexible with advantage, so that they can adapt to the niche depth something. By "flexible" is preferably to be understood that its distal end can be moved under elastic deformation by at least 2 cm perpendicular to the back, possibly with simultaneous deflection parallel to the back of the device.
    The separating lip 19 separates the intake area of the air from the discharge area.
    Advantageously, this separating lip 19 made of a rubber-elastic material.
    In particular, the separating lip 19 extends transversely to the entire width of the refrigerator.
    Engine room: In the following, the components in the engine room will be described in more detail with reference to FIGS. 3-8.
    As mentioned, the compressor 5, the Kältemitteikondensator 6 and a fan 20 are arranged in the engine room 7.
    As best seen in Figs. 7 and 8, the engine room has a front portion 7a and a rear portion 7b. In the front portion 7a, at least partially, the refrigerant condenser 6 is arranged. The compressor 5 and the fan 20 are, however, in the rear section 7b.
    The compressor 5 and the fan 20 are designed to be higher (ie have a greater extent in the vertical direction) than the Kühlmitteikondensator 6. By the high components are all arranged in the rear portion 7 b, the front portion 7 a can be made less high, which provides more space for the work space 2b (see Fig. 1 and 2).
    In the front part 7a of the engine room 7 is further an air deflection duct 22 which is disposed between the Kältemitteikondensator 6 and the fan 20.
    Its fan-side end is designed as a suction line 24 (see Fig. 3, 4, 7), which rises to the fan 20 towards the top.
    The fan 20 is designed as a partial radial fan. It has a fan wheel 26 which is driven for rotation by a motor about an axis of rotation 28 (Figures 4 and 7). The axis of rotation 28 is substantially perpendicular to the back 30 of the refrigerator.
    With the fan, a deflection of the air can be achieved by almost 90 ° in a simple manner.
    In addition, such fans have the advantage that they build up more pressure than a pure Achsiallüfter. A pressure build-up is particularly desirable when the air is to be blown through the gap 16 between the rear panel of the appliance and the installation niche to the outside. However, since a relatively high volume flow is nevertheless required, no pure radial fan is used with advantage, but one with axial flow components.
    Fig. 9 shows the Cordier diagram with the ratios (diameter number ζ, running number σ) for the optimal design of the fan used here.
    For a typical device, a diameter number ζ = 2.37 and a running number σ = 0.57. Advantageously, a fan with a diameter number ζ of 1.6 to 3.9 and a running number σ of 0.2 to 1.25 is used.
    The fan wheel 26 is arranged in a fan housing 32 (FIG. 4), which surrounds the fan wheel 26 asymmetrically and has an air discharge area or an exhaust opening 34 in its uppermost area (FIG. 3).
    The compressor 5 is arranged next to the fan 20 and behind the refrigerant condenser 6.
    Behind and below the compressor 5 suction or air intake portions 36a and 36b are provided (Fig. 2-4), through which the ambient air 8a, 8b can be sucked into the engine room 7.
    The so-sucked air sweeps around the compressor 5 and cools him. Then it enters between the front-to-rear lamellae of the refrigerant condenser 6, as shown in Fig. 8 with the dashed arrows 8 d.
    The air flows through the refrigerant condenser 6 from the rear to the front and exits the front of the refrigerant condenser.
    In the foremost portion of the Umlenkkanals 22, the air is deflected so that it then flows from front to rear to the fan 20 and passes into the intake passage 24. In Fig. 7 this is shown with a dashed arrow 8e.
    As best seen in Fig. 3-5 can be seen in the deflection channel 22 curved air guide walls 38 may be provided to promote a laminar deflection of the air flow.
    In the fan 20, the air flow is deflected again, in the direction approximately perpendicular to the axis of rotation 28. Due to the asymmetric configuration of the fan housing 32, the air then flows to the outlet port 34, see arrow 8c in Fig. 7.
    As best seen in Fig. 8, below the refrigerant condenser 6, a condensation water evaporation tray 42 is arranged. It is open to the refrigerant condenser 6, so that the air flowing through the refrigerant condenser 6 contributes to the evaporation of the water.
    In this way, dew water or condensate accumulating in the refrigerator can be efficiently evaporated and transported out of the appliance.
    Advantageously 42 transverse ribs 44 are provided in the condensation water tray, which are transverse, in particular perpendicular, to the flow direction of the air in the refrigerant condenser 6 and prevent (or at least make it less likely) that the air bypasses the refrigerant condenser 6 through the condensation water tray 42 , In Fig. 3, the already mentioned separating lip 19 is shown in dashed lines. It is located below the exhaust opening or the air discharge area 34 and above the air intake area or the intake openings 36a and 36b.
    It is e.g. glued to the back of the fan housing 32 and to a device rear wall, not shown. It extends with advantage over the entire width of the refrigerator.
    Remarks: In the above embodiment, the air first passes through the entire refrigerant condenser 6 and then enters the air deflection passage 22 first. It is conceivable, however, that also a part of the refrigerant condenser 6 is arranged in the air deflection duct 22, e.g. in an area 40 in front of the fan (see Fig. 4 and 5).
    In principle, it is also conceivable that the air is first sucked in by the fan and then blown through the refrigerant condenser. In this case, however, the fan fouled relatively quickly. Since fouling of the fan leads to a loss of efficiency more quickly than fouling of the refrigerant condenser 6, it is advantageous to first guide the air through the refrigerant condenser 6 and only then through the fan 20. In addition, this also improves the laminarity of the flow in the refrigerant condenser 6.
    Further, it is also conceivable that the air is first conveyed through the refrigerant condenser 6 and only then to the compressor 5. However, since the compressor 5, as explained above, is advantageously arranged in the rear part 7b of the engine room 7 for reasons of space, the above embodiment is preferable.
    Advantageously, the evaporator or the evaporators 4a, 4b are not arranged in the engine room 7, but they are directly in cooling contact with the work space or the utility rooms 2a, 2b.
    On the other hand, allows the arrangement of the refrigerant condenser in the engine room and its active ventilation greater useful capacity compared to devices in which a large, passively cooled refrigerant condenser is arranged on the rear of the device.
    While preferred embodiments of the invention are described in the present application, it should be clearly understood that the invention is not limited to these and may be embodied otherwise within the scope of the following claims.
    权利要求:
    Claims (14)
    [1]
    1. Refrigerator, in particular for food, comprising a housing (1), a work space (2a, 2b), a door (3a, 3b) on a front side of the housing (1), wherein the work space (2a, 2b) on the door (3a, 3b), a heat pump comprising a compressor (5) for conveying a heat pump medium, an evaporator (4a, 4b) for cooling the work space (2a, 2b) and a refrigerant condenser, a fan (20) for cooling the condenser (6) with ambient air, an at least partially below the work space (2a, 2b) arranged engine room (7), in which the fan (20), the compressor (5) and the refrigerant condenser (6) are arranged, characterized in that the Fan (20) and the engine room (7) are configured such that with the fan (20) the ambient air for cooling the refrigerant condenser (6) from below and / or rear into the housing (1) is sucked and blown backwards.
    [2]
    2. Cooling device according to claim 1, wherein the fan (20) and the engine room (7) are designed such that with the fan (20), the ambient air to the compressor (5) can be guided to cool the compressor (5).
    [3]
    3. Cooling device according to one of the preceding claims, wherein the compressor (5) and / or the fan (20) is arranged at least partially further back in the cooling device than the refrigerant condenser (6) or are.
    [4]
    4. Cooling appliance according to one of the preceding claims, wherein with the fan (20), the ambient air first for cooling the compressor (5) to the compressor (5) and then for cooling the refrigerant condenser (6) through the refrigerant condenser (6) is feasible.
    [5]
    5. Refrigerator according to one of the preceding claims wherein the refrigerant condenser (6) is less high than the compressor (5).
    [6]
    6. Refrigerator according to one of the preceding claims, wherein the fan (20) has an axis of rotation (28) which is substantially perpendicular to a back (30) of the refrigerator.
    [7]
    7. Refrigerator according to one of the preceding claims, wherein with the fan (20), the ambient air from the refrigerant condenser (6) is sucked forth.
    [8]
    8. The cooling device according to claim 7, wherein from the fan (20), the ambient air directly to an air discharge area (34) on the back (30) of the cooling device is feasible.
    [9]
    9. Refrigerator according to one of the preceding claims, wherein the fan (20) and the engine room (7) are configured such that with the fan (20) the ambient air from the back to the front through the refrigerant condenser (6) can be guided.
    [10]
    10. The cooling device according to one of the budding claims, wherein in the engine room (7) an air deflection channel (22) is provided which is arranged between the refrigerant condenser (6) and the fan (20), in which the ambient air from a flow direction from back to front is deflectable in a flow direction from front to back.
    [11]
    11. Cooling appliance according to one of the preceding claims wherein in the engine room (7) an air intake (36a, 36b) are arranged with suction behind the compressor (5) and below the compressor (5).
    [12]
    12. Cooling appliance according to one of the preceding claims, wherein below the refrigerant condenser (6) to the refrigerant condenser (6) open out condensation water tray (42) is arranged, and in particular wherein in the condensation water tray (42) transverse ribs (44) transversely to a flow direction of the air in the refrigerant condenser (6) are arranged.
    [13]
    13. A refrigerator according to one of the preceding claims, wherein on a rear side of the device, a separating lip (19) is arranged, which projects beyond the rear and an air intake region (36 a, 36 b) of the engine room (7) from an air discharge area (34) of the engine room ( 7) separates.
    [14]
    14. Use of the refrigerator according to one of the preceding claims in a niche, wherein the out of the engine room (7) exiting air through a gap (16) between a rear wall of the refrigerator and a niche rear wall (18) is guided upwards.
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    同族专利:
    公开号 | 公开日
    CH713485A3|2019-03-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1475590A2|2003-05-09|2004-11-10|Samsung Electronics Co., Ltd.|Refrigerator|
    EP1538412A2|2003-12-01|2005-06-08|LG Electronics Inc.|Radiating apparatus of built-in refrigerator|
    EP1541948A2|2003-12-09|2005-06-15|LG Electronics Inc.|Radiating apparatus of built-in refrigerator|
    US20060207278A1|2005-03-18|2006-09-21|Carrier Corporation|Modular refrigeration cassette with condensate evaporative tray|
    WO2009041778A2|2007-09-28|2009-04-02|Lg Electronics Inc.|Refrigerator|
    KR20140091290A|2013-01-11|2014-07-21|위니아만도 주식회사|radiant heat cover of machine room for refrigerator|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH00877/18A|CH713485A3|2018-07-16|2018-07-16|Cooling unit with actively cooled engine room.|CH00877/18A| CH713485A3|2018-07-16|2018-07-16|Cooling unit with actively cooled engine room.|
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