• 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:
    PURPOSE: A refrigerator and method for controlling operation of the same are provided to reduce cost and power consumption and to prevent dewing in compartments. CONSTITUTION: A refrigerator includes a temperature set part(55) setting objective temperature in a compartment; a temperature sensor(59) detecting temperature in the compartment; and a control part(53) controlling rotating velocity of a radiating fan(51) based on difference between the set objective temperature and the detected temperature so as to improve cooling efficiency of a peltier element.
    公开号:KR20030009713A
    申请号:KR1020010044283
    申请日:2001-07-23
    公开日:2003-02-05
    发明作者:권준현；박래은；임창학
    申请人:삼성전자주식회사；
    IPC主号:
    专利说明:

    Refrigerator, and operation control method thereof
    [11] The present invention relates to a refrigerator and an operation control method thereof, and more particularly, to a refrigerator provided with a Peltier element and an operation control method thereof.
    [12] Unlike general cooling systems using refrigerants, the Peltier element does not have a large number of refrigerant components such as a compressor, for example, an evaporator, a condenser, and a refrigerant pipe, so that a compact and lightweight refrigerator can be manufactured. There is an advantage. Therefore, recently, various types of refrigerators using the same have been released and are attracting the attention of consumers.
    [13] 1 is a schematic cross-sectional view of a conventional refrigerator having such a Peltier element. As can be seen from this figure, the refrigerator 1 having a Peltier element is provided in the front of the main body 3 and the main body 3 which form the cooling chamber 2, and can open and close the cooling chamber 2 by rotation. It consists of a door 9. The main body 3 includes an outer casing 15 forming an outer appearance, and an inner casing 5 accommodated at an interval of filling insulation in the outer casing 15.
    [14] The outer casing 15 has a substantially rectangular cylindrical shape and includes upper and lower plates 16 and 17, a back plate 18, and left and right plates (not shown). In the central region of the back plate 18, there is formed a component mounting groove 11 in which a cooling unit including the Peltier element 21, which will be described later in detail, is mounted. And the operation panel part 13 is provided in the upper front area | region of the upper board 16. As shown in FIG. This operation panel portion 13 has a plurality of operation operation buttons (not shown) for operating the operation of the apparatus. This also includes a temperature control button (not shown) for setting the temperature in the cooling chamber (2).
    [15] The inner casing 5 also has upper and lower plates 6 and 7, a back plate 8, and left and right plates (not shown), whereby a cooling chamber 2 is formed. The cooling chamber 2 is equipped with a temperature sensor (not shown) that can sense the temperature in the cooling chamber 2. The inner casing 5 is made of a material having high thermal conductivity, for example, aluminum or copper. It is preferable to produce using. For example, foam urethane or the like is filled in the foam material filling space between the inner casing 5 and the outer casing 15. At this time, except the component mounting groove 11 is filled with a foam material, thereby, heat transfer between the inside and the outside is blocked.
    [16] On the other hand, the Peltier element 21 is mounted in the component mounting groove 11. The Peltier element 21 can be divided into a heat absorbing portion and a heat radiating portion, and the heat absorbing portion is provided to face the cooling chamber 2. Between the heat absorbing portion of the Peltier element 21 and the inner casing 5, a heat absorbing block 23 of, for example, aluminum or copper material having high thermal conductivity is interposed. One end of the heat absorbing block 23 is in contact with the back plate 8 of the inner casing 5, and the other end is in contact with the heat absorbing portion of the Peltier element 21. Therefore, the inner casing 5 and the Peltier element 21 can effectively heat transfer with each other.
    [17] The heat dissipation fan 27 which can blow toward the Peltier element 21 is provided in the outer side of the component mounting groove 11. The heat radiating fan 27 performs a function of cooling the heat radiating portion of the Peltier element 21.
    [18] The heat dissipation block 25 is interposed between the Peltier element 21 and the heat dissipation fan 27. The heat dissipation block 25 is provided to be in contact with the Peltier element 21, and similarly to the heat absorbing block 23, the heat dissipation block 25 is made of, for example, aluminum or copper material having a high thermal conductivity. The outer surface of the heat radiation block 25 is provided with a plurality of heat radiation fins 26. The heat dissipation fin part 26 increases the heat dissipation area of the heat dissipation block 25 to the maximum, thereby effectively dissipating heat. The heat dissipation block 25 is installed to be exposed to the atmosphere on the rear surface of the refrigerator main body 3. As a result, natural heat exchange with the outside air is performed, and at the same time, when the heat radiating fan 27 is operated, heat exchange is promoted by the blowing.
    [19] The conventional refrigerator 1 having such a configuration maintains the temperature in the cooling chamber at a temperature set by the user by an operation control method such as the flowchart shown in FIG. The description is as follows.
    [20] When the user sets the target temperature in the cooling chamber (S1), first, the controller (not shown) senses the current temperature in the cooling chamber 2 based on the temperature signal transmitted from the temperature sensor (S2). Thus, when the present temperature is compared with the set temperature (S3), when the temperature in the cooling chamber 2 is equal to or larger than the allowable value of the set target temperature, that is, when the present temperature in the cooling chamber 2 is higher than the set temperature, the Peltier element ( The input of 21) is kept on (S4). Then, the cooling in the cooling chamber 2 is performed by the power supplied to the Peltier element 21 to lower the temperature therein.
    [21] When the temperature in the cooling chamber 2 is equal to or less than the allowable value of the set temperature, the input of the Peltier element is turned off (S5). Then, as time passes, the temperature in the cooling chamber 2 will become high gradually.
    [22] On the other hand, the control unit periodically detects the temperature in the cooling chamber 2 at a predetermined time interval. Therefore, the present temperature in the cooling chamber 2 is compared with the target temperature, and the on-off control of the input of the Peltier element 21 as described above is repeatedly performed. As a result, the temperature in the cooling chamber 2 can be maintained at the set temperature.
    [23] By the way, in the conventional refrigerator and its operation control method, the heat dissipation side of the Peltier element 21 is exposed to the outside, and inevitably heat energy from the outside is transferred from the heat dissipation side to the heat absorbing side, which is the Peltier element 21. To reduce the heat absorbing ability of the, there is a problem that a large amount of current supply to the Peltier element 21 to be compensated for. This problem increases the size of the current controller for controlling the supply current, complicates its circuit configuration, increases the manufacturing cost, and increases the volume of the refrigerator in contradiction to the purpose for compact and light weight.
    [24] As described above, in the conventional operation control method in which the input of the Peltier element 21 is simply turned on and off to adjust the temperature in the cooling chamber, when the Peltier element 21 is turned off, the heat dissipation portion is relatively fast from the heat radiating portion side. Heat transfer takes place, which causes the temperature in the cooling chamber to rise relatively quickly. Accordingly, there is a problem that the on-off period of the Peltier element 21 is shortened, thereby increasing power consumption. In this case, the temperature difference between the Peltier element 21 and the cooling chamber 2 is large, and there is a problem that dew condensation occurs not only on the Peltier element 21 itself but especially on the wall surface of the cooling chamber 2. .
    [25] Accordingly, an object of the present invention is to provide a refrigerator and its operation control method which can reduce the cost, reduce the power consumption, and eliminate the dew condensation in the cooling chamber in view of these problems in the related art. It is.
    [1] 1 is a side cross-sectional view of a refrigerator having a Peltier element,
    [2] 2 is a flow chart illustrating a method of operating a conventional refrigerator;
    [3] 3 is a control block diagram of a refrigerator having a Peltier device according to the present invention, and
    [4] 4 is a flowchart illustrating a method of operating a refrigerator of the present invention.
    [5] * Explanation of symbols for the main parts of the drawings
    [6] 3: refrigerator body 5: inner casing
    [7] 15: outer casing 21, 57: Peltier element
    [8] 23: endothermic block 25: heat dissipation block
    [9] 27, 51: heat radiating fan 55: temperature setting section
    [10] 59: temperature sensor
    [26] According to the present invention, there is provided a Peltier element having a heat absorbing portion disposed to face the inside of a cooling chamber and an heat absorbing portion disposed outwardly, and a heat radiating fan for cooling the heat radiating portion of the Peltier element. Setting a target temperature in the cooling chamber; Detecting a present temperature in the cooling chamber; Comparing the set target temperature with the detected temperature; And controlling the radiating fan so that the rotational speed of the radiating fan increases as the difference between the set target temperature and the detected temperature increases.
    [27] In this case, since only a certain amount of current may be applied to the Peltier element, the scale of the current controller can be reduced, and in some cases, the current controller can be removed, thereby achieving a compact and light weight of the refrigerator and a reduction in manufacturing cost. have.
    [28] Providing data regarding a rotation speed of the heat radiating fan according to a difference between the target temperature and the detection temperature; And controlling the rotational speed of the heat radiating fan based on the data value.
    [29] On the other hand, according to another field of the present invention, the object is a refrigerator having a heat absorbing portion disposed to face in the cooling chamber and the heat absorbing portion disposed outward, and a heat dissipation fan for cooling the heat radiating portion of the Peltier element A temperature setting unit capable of setting a target temperature in the cooling chamber; A temperature sensor for detecting a temperature in the cooling chamber; And a control unit controlling a rotation speed of the heat radiating fan based on a difference between the set target temperature and the detection temperature.
    [30] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
    [31] The refrigerator 11 of the present invention has the same configuration and appearance as the refrigerator described with reference to FIG. 1 according to the related art, and thus, a detailed description thereof will be omitted. However, the configuration of the refrigerator 11 according to the present invention can be described with the control block diagram shown in FIG. 3, which will be described below.
    [32] The refrigerator 11 includes a temperature setting unit 55 for allowing a user to set a temperature in the cooling chamber 2 and a temperature sensor 59 for detecting a current temperature in the cooling chamber 2. The temperature setting part 55 is provided in the operation panel part (13 of FIG. 1). Here, the control unit 53 controls the operation of the heat radiating fan 51 after applying the signal from the temperature setting unit 55 and applying and comparing the signal from the temperature sensor 59.
    [33] The operation of the present refrigerator 11 of this configuration is controlled according to the flowchart of FIG. 4. When the power is turned on (P1) and the temperature is set (P2), the control unit 53 applies a signal from the temperature sensor 59 to detect the present temperature in the cooling chamber (2 in FIG. 1) (P3). . Then, the detection temperature is compared with the set target temperature (P4).
    [34] First, it is assumed that the detection temperature is equal to or larger than the allowable value of the target temperature, that is, the case where the temperature in the cooling chamber 2 is higher than the set target temperature. In this case, the control unit 53 increases the rotation speed of the heat radiating fan 51 (P6). Then, as the rotational speed of the heat radiating fan 51 increases, the amount of heat exchange with the atmosphere increases on the heat radiating portion side of the Peltier element 57. That is, the relatively high heat energy on the heat sink side is transferred to the atmosphere, the temperature of the heat sink is lowered.
    [35] When the temperature on the heat dissipation side of the Peltier element 57 is lowered, the temperature difference from the heat dissipation side is reduced, so that the amount of heat energy transfer from the heat dissipation side to the heat absorption side is reduced. Therefore, the heat absorbing ability on the heat absorbing portion side is improved, and the target temperature can be maintained within a short time by lowering the present temperature in the cooling chamber with a relatively small amount of current.
    [36] On the other hand, when the rotational speed of the heat radiating fan is increased and the temperature in the cooling chamber reaches the target temperature, the control unit 53 slows down the rotational speed of the radiating fan 51 (P5). Then, the heat exchange amount between the heat dissipation portion and the atmosphere of the Peltier element 57 decreases, and the temperature of the heat dissipation portion is slightly increased. In this case, the heat energy of the heat radiation portion side is transferred to the heat absorbing portion side, the temperature of the heat absorbing portion side gradually rises. However, since the heat dissipation fan 51 disposed on the outside rotates at a constant speed and heat exchange is performed in the heat dissipation portion of the Peltier element 57, the temperature on the heat absorbing portion side does not fall to a certain degree or less. Therefore, the temperature in the cooling chamber 2 is kept substantially constant at the target temperature set by the user, and may fall below the allowable value of the target temperature if the time elapses slightly.
    [37] In this case, the controller 53 again detects a signal applied from the temperature sensor 59 to control the rotation speed of the heat radiating fan 51. In this way, the control unit 53 controls to increase or decrease the rotational speed of the heat radiating fan 51 until the power is turned off or, for example, for a time set by the user, so that the temperature in the cooling chamber 2 is maintained. Can be kept constant.
    [38] On the other hand, in the above-described and illustrated embodiments, for ease of explanation, the application of the Peltier element 57 to the refrigerator 11 has been described. However, the present invention can of course be equally applicable to a warmer having a fan for forming a receiving space on the heat dissipating portion side of the Peltier element 57 and cooling the heat absorbing portion.
    [39] As described above, according to the present invention, since the cooling efficiency of the Peltier element can be improved simply by controlling the rotational speed of the heat radiating fan, it is not necessary to increase the capacity of the current controller more than necessary, and Since a complicated circuit configuration can be avoided, a refrigerator and its operation control method which can reduce manufacturing costs are provided. In the present refrigerator and its operation control method, the Peltier element can be cooled relatively quickly, thereby providing an excellent effect of reducing power consumption and preventing dew condensation in the cooling chamber.
    权利要求:
    Claims (4)
    [1" claim-type="Currently amended] In the operation control method of the refrigerator comprising a Peltier element having a heat absorbing portion disposed to face in the cooling chamber and a heat absorbing portion disposed outward, and a heat radiating fan for cooling the heat radiating portion of the Peltier element,
    Setting a target temperature in the cooling chamber;
    Detecting a present temperature in the cooling chamber;
    Comparing the set target temperature with the detected temperature; And
    And controlling the heat radiating fan to increase the rotational speed of the heat radiating fan as the difference between the set target temperature and the detection temperature is increased.
    [2" claim-type="Currently amended] The method of claim 1,
    The control method of the refrigerator, characterized in that a certain amount of current is applied to the Peltier element.
    [3" claim-type="Currently amended] The method according to claim 1 or 2,
    Providing data regarding a rotation speed of the heat radiating fan according to a difference between the target temperature and the detection temperature; And
    And controlling the rotation speed of the heat radiating fan based on the data values.
    [4" claim-type="Currently amended] A refrigerator comprising a peltier element having a heat absorbing portion disposed to face the inside of the cooling chamber and a heat absorbing portion disposed outwardly, and a heat radiating fan for cooling the heat radiating portion of the Peltier element,
    A temperature setting unit capable of setting a target temperature in the cooling chamber;
    A temperature sensor for detecting a temperature in the cooling chamber; And
    And a controller configured to control a rotation speed of the heat radiating fan based on a difference between the set target temperature and the detected temperature.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2001-07-23|Application filed by 삼성전자주식회사
    2001-07-23|Priority to KR1020010044283A
    2003-02-05|Publication of KR20030009713A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020010044283A|KR20030009713A|2001-07-23|2001-07-23|Refrigerator and controlling method thereof|
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