• 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 invention discloses a valve element for an electronic expansion valve, which includes a rotor core and a hollow rotor cylinder sleeved outside the rotor core. Ribs and positioning grooves of a positioning device on the valve element are changed, so that the positioning grooves and an inner wall of a guiding section hole are stepped, an even thickness of the inner wall is maintained, and a working performance of the electronic expansion valve is improved.
    公开号:NL2026349A
    申请号:NL2026349
    申请日:2020-08-27
    公开日:2020-10-15
    发明作者:Yao Peng；Chen Zhenbin
    申请人:Jiangxi Audy Brasswork Inc；
    IPC主号:
    专利说明:

    [0001] [0001] The present invention relates to an electronic expansion valve in the field of air 3 conditioning refrigeration or heat pump systems, and more particularly, to a valve element for an electronic expansion valve.BACKGROUND
    [0002] [0002] As well all know, an electronic expansion valve has been widely used in the field of air conditioning refrigeration or heat pump systems to adjust throttling, depressurization and a flow of a fluid. The electronic expansion valve uses an adjusted parameter to generate a signal, controls a voltage or a current applied to a coil to generate a magnetic field according to a program set by a computer, and drives a valve element of a main valve body to rotate to change a flow area of a valve port, thus adjusting the flow automatically. 13° [0003] As shown in FIG 1 to FIG 3, the valve element currently used in the electronic expansion valve is composed of a rotor cylinder 1 and a rotor core 2 sleeved in the rotor cylinder 1. A pair of strip-shaped positioning grooves 101 penetrating a whole inner wall of the rotor cylinder 1 are arranged inside the rotor cylinder 1, and a pair of strip-shaped positioning ribs 201 which are able to be sleeved on the pair of strip-shaped positioning grooves 101 are arranged on an outer wall of the rotor core 2. The rotor cylinder 1 and the rotor core 2 are assembled by matching and clamping the strip-shaped positioning grooves 101 with the strip-shaped positioning ribs 201. Since the pair of strip-shaped positioning grooves 101 are arranged inside the rotor cylinder 1, a position on the rotor cylinder 1 provided with the strip-shaped positioning grooves 101 is weaker than that on other side walls, which means that there is a weak point at the position on the rotor provided with the positioning grooves, so that an internal magnetic field of the rotor is distributed unevenly during operation, which may lead to unstable operation, deviation in operation of the rotor and other problems during operation, resulting in poor function and performance. Meanwhile, in order to ensure an operating reliability of the whole valve element, the rotor cylinder 1 is made of neodymium iron boron, which is hard and brittle, so that when the rotor is impacted 1 by an external force, the weak point is easy to break, thus having a certain potential quality hazard. Meanwhile, in order to ensure that the function and the performance of the rotor are not affected during operation, and to make the weak point unbreakable, people make a whole wall of the rotor thicker, which increases a cost of producing the rotor. In addition, the rotor of 3 the valve element is currently a magnetic rotor, and 10 pairs of magnetic poles are evenly distributed on a peripheral wall of the magnetic rotor. Therefore, a thickness of an inside wall of the magnetic rotor is inconsistent, which may lead to a phenomenon of uneven distribution of the internal magnetic field. This phenomenon may make the whole expansion valve fluctuate greatly during operation, thus affecting a performance of the expansion valve.SUMMARY
    [0004] [0004] The present invention is intended to overcome the shortcomings of the prior art, and provides a valve element with a reasonable structure, a reliable quality, a better performance and a low cost.
    [0006] [0006] In the above valve element for the electronic expansion valve, the second positioning groove 121 may penetrate a whole inside wall of the limiting section hole 12, and the second 3 positioning rib 222 is able to completely fall into the penetrated second positioning groove 121; and the second positioning groove 121 may also be a stepped blind hole in the inside wall of the limiting section hole 12, and the second positioning rib 222 is able to completely fall into the second positioning groove 121 of the stepped blind hole type.
    [0007] [0007] Further, a length of the guiding section 21 may be longer than that of the limiting 10° section 22.
    [0008] [0008] Further, the first positioning groove 111 and an inner wall of the guiding section hole 11 are stepped.
    [0009] [0009] In the above valve element for the electronic expansion valve, the rotor cylinder 1 is a magnetic rotor cylinder, and 10 pairs of magnetic poles are evenly distributed on a peripheral 13° wall of the magnetic rotor cylinder.
    [0010] [0010] In the above valve element for the electronic expansion valve, two first positioning ribs 211 in pairs and two second positioning ribs 222 in pairs are provided, which are symmetrically distributed on the side wall of the guiding section 21 and the side wall of the limiting section 22 respectively; and two first positioning grooves 111 in pairs and two second positioning grooves 121 in pairs are provided, which are symmetrically distributed at the outer end of the guiding section hole 11 and the inside wall of the limiting section hole 12.
    [0011] [0011] According to the above valve element for the electronic expansion valve, the valve element for the electronic expansion valve of the present invention may have the following changes.
    [0012] [0012] 2. Six first positioning ribs 211 in three pairs and six second positioning ribs 222 in three pairs are provided, which are symmetrically distributed on the side wall of the guiding section 21 and the side wall of the limiting section 22 respectively; and six first positioning grooves 111 in three pairs and six second positioning grooves 121 in three pairs are provided, which are symmetrically distributed at the outer end of the guiding section hole 11 and the inside wall of the limiting section hole 12.
    [0013] [0013] Compared with the prior art, the present invention has the beneficial effects that: the first positioning groove 111 and the second positioning groove 121 are respectively arranged at the outer end of the guiding section hole and the inner wall of the limiting section hole of 10° the inner holes of the rotor cylinder, and the first positioning groove 111 and the inner wall of the guiding section hole are stepped, so that the thickness of the side wall of the rotor cylinder is consistent, thus having no weak point on the inside wall of the rotor. Therefore, the magnetic field is distributed evenly and operated stably during operation. Similarly, it is not necessary to make the whole wall of the rotor cylinder thicker, thus saving the cost of 13 producing the rotor cylinder and ensuring that no potential quality hazard exists when the rotor cylinder is impacted by an external force. Therefore, the present invention is reliable in quality. Meanwhile, due to the consistent thickness of the side wall of the rotor cylinder, the internal magnetic field is distributed evenly, so that the whole expansion valve has small stable fluctuation during operation and a good operating accuracy. Therefore, the present invention has a reasonable structure, a reliable quality and a low cost.
    [0014] [0014] The present invention is further described in detail hereinafter with reference to the accompanying drawings and the specific embodiments. [BREIF DESCRIPTION OF THE DRAWINGS] FIG lisa stereoscopic diagram of a valve element at a current stage (from the bottom), FIG 2 is a stereoscopic diagram of the valve element at the current stage (from the top); FIG 3 is an installation diagram of the valve element at the current stage; FIG 4 is a first stereoscopic diagram of the present invention (from the bottom); FIG 5 is a second stereoscopic diagram of the present invention (from the top), FIG 6 is a structure diagram of the present invention; 4
    [0015] [0015] [DETAILED DESCRIPTION] > Embodiment 1 A valve element for an electronic expansion valve as shown in FIG 4 to FIG 8 includes a rotor core 2 and a hollow rotor cylinder 1 sleeved outside the rotor core 2. The rotor cylinder 1 may be a magnetic rotor cylinder, and 10 pairs of magnetic poles are evenly distributed on a peripheral wall of the magnetic rotor cylinder. The rotor core 2 is composed of a guiding 10° section 21 and a limiting section 22 with a diameter smaller than that of the guiding section
    [0016] [0016] In the embodiment, the end of the rotor core 2 provided with the limiting section 22 is sleeved in the inner hole of the rotor cylinder 1 during assembling. At the moment, an outside wall of the guiding section 21 contacts the inside wall of the guiding section hole 11 to play a role of guiding, and then the rotor core 2 slides down slowly under guidance of the guiding 30 section 21. As the rotor core 2 slides down slowly, the limiting section 22 may pass through the limiting section hole 12, with an end portion thereof exposed outside the rotor cylinder 1.
    [0017] [0017] A length of the guiding section 21 is longer than that of the limiting section 22.
    [0018] [0018] The first positioning groove 111 and an inner wall of the guiding section hole 11 are stepped, that is to say, the first positioning groove 111 does not penetrate the whole inner wall 10° of the guiding section hole.
    [0019] [0019] In the embodiment, two first positioning ribs 211 in pairs and two second positioning ribs 222 in pairs are provided, which are symmetrically distributed on the side wall of the guiding section 21 and the side wall of the limiting section 22 respectively. Two first positioning grooves 111 in pairs and two second positioning grooves 121 in pairs are provided, 13 Which are symmetrically distributed at the outer end of the guiding section hole 11 and the inside wall of the limiting section hole 12.
    [0020] [0020] Embodiment 2 According to a valve element for an electronic expansion valve, a second positioning groove 121 may also be a stepped blind hole in an inside wall of a limiting section hole 12, and a second positioning rib 222 is able to completely fall into the second positioning groove 121 of the stepped blind hole type. Four first positioning ribs 211 in two pairs and four second positioning ribs 222 in two pairs are provided, which are symmetrically distributed on a side wall of a guiding section 21 and a side wall of a limiting section 22 respectively. Four first positioning grooves 111 in two pairs and four second positioning grooves 121 in two pairs are provided, which are symmetrically distributed at an outer end of a guiding section hole 11 and an inside wall of the limiting section hole 12. The rest is the same as the embodiment 1.
    [0021] [0021] Embodiment 3 According to a valve element for an electronic expansion valve, six first positioning ribs 211 in three pairs and six second positioning ribs 222 in three pairs are provided, which are symmetrically distributed on a side wall of a guiding section 21 and a side wall of a limiting 6 section 22 respectively. Six first positioning grooves 111 in three pairs and six second positioning grooves 121 in three pairs are provided, which are symmetrically distributed at an outer end of a guiding section hole 11 and an inside wall of a limiting section hole 12. The rest is the same as the embodiment 1. 3 [0022] Comparative example 1 When the prior art is used, a valve element on an electronic expansion valve is composed of a rotor cylinder 1 and a rotor core 2 sleeved in the rotor cylinder 1. The rotor cylinder 1 may be a magnetic rotor cylinder, and 10 pairs of magnetic poles are evenly distributed on a peripheral wall of the magnetic rotor cylinder. A pair of strip-shaped positioning grooves 101 10 penetrating a whole inner wall of the rotor cylinder 1 are arranged inside the rotor cylinder 1, and a pair of strip-shaped positioning ribs 201 which are able to be sleeved on the pair of strip-shaped positioning grooves 101 are arranged on an outer wall of the rotor core 2. The rotor cylinder 1 and the rotor core 2 are assembled by matching and clamping the strip-shaped positioning grooves 101 with the strip-shaped positioning ribs 201. 13 [0023] Effect comparison
    [0024] [0024] Table 1 Strength comparison of magnetic rotor cylinder
    [0025] [0025] Table 2 Performance comparison of electronic expansion valve 8
    [0026] [0026] It can be seen from Table 2 that when the electronic expansion valve is assembled by the valve element in the embodiment 1 to the embodiment 3, an internal magnetic field of the valve element is distributed evenly and operated stably during operation, the minimum 13 response voltage is also reduced, and the operation is sensitive. Therefore, the present invention is reliable in quality.
    [0027] [0027] The above embodiments are only preferred embodiments of the present invention, and are not used to limit the implementation scope of the present invention, which means that all equivalent changes and modifications made according to the contents of the patent application scope of the present invention should belong to the technical scope of the present invention. 9
    权利要求:
    Claims (9)
    [1]
    Valve element for an electronic expansion valve, comprising a rotor core (2) and a hollow rotor cylinder (1) stuck outside the rotor core (2), the rotor core (2) being composed of a guide section (21) and a restriction section (22) with a diameter smaller than that of the guide section (21), and inner holes of the rotor cylinder (1) are divided into a guide section hole (11) through which the guide section (21) is slidably inserted, and a boundary section hole (12) through which the boundary section (22 ) slidably passes, an installation groove (221) for installing a 10 ° anti-decoupling clip spring is provided at an extension end of the boundary section (22) after the boundary section (22) passes through and extends from the boundary section hole (12), and the diameter of the boundary section hole (12) is smaller than the diameter of the guide section (21); wherein a first positioning rib (211) is disposed on a side wall at one end of the guide section (21) far away from the boundary section (22); a second 13 ° positioning rib (222) is provided on a side wall of the boundary section (22) located within the installation groove (221), a first positioning groove (111) adapted to the first positioning rib (211) is provided at an outer end of the guide section hole (11), and a second positioning groove (121) into which the second positioning rib (222) falls is provided on an inner side wall of the boundary section hole (12).
    [2]
    2. An electronic expansion valve valve element according to claim 1, wherein the second positioning groove (121) penetrates an entire inner side wall of the boundary section hole (12), and the second positioning rib (222) is able to fall completely into the pierced second positioning groove (121).
    [3]
    3. The electronic expansion valve valve member of claim 1, wherein the second positioning groove (121) is a stepped blind hole in the inner side wall of the boundary section hole (12), and the second positioning rib (222) is completely in the second positioning groove (121) of the the stepped blind hole type can fall.
    [4]
    The valve element for an electronic expansion valve according to claim 1, wherein a length of the guide section (21) is longer than that of the restriction section (22).
    [5]
    The valve element for an electronic expansion valve according to any one of claims 1 to 4, wherein the first positioning groove (111) and an inner wall of the guide section hole (11) are stepped.
    [6]
    Valve element for an electronic expansion valve according to any one of claims 1 to 5, wherein the rotor cylinder (1) is a magnetic rotor cylinder, and 10 pairs of magnetic poles are evenly distributed on a peripheral wall of the magnetic rotor cylinder.
    [7]
    Valve element for an electronic expansion valve according to any one of claims 1 to 6, wherein two first positioning ribs (211) in pairs and two second positioning ribs (222) in pairs are provided, symmetrically distributed on the side wall of the guide section (21). ) and the side wall of the boundary section (22) respectively, and two first positioning grooves (111) in pairs and two second positioning grooves (121) in pairs are provided symmetrically distributed at the outer end of the guide section hole (11) and the inner side wall of the the boundary section hole (12) respectively.
    [8]
    The valve element for an electronic expansion valve according to any one of claims 1 to 6, wherein four first positioning ribs (211) in two pairs and four second positioning ribs (222) in two pairs are provided symmetrically distributed on the side wall of the guide section. (21) and the side wall of the boundary section (22) respectively, and four first positioning grooves (111) in two pairs and four second positioning grooves (121) in two pairs, which are symmetrically distributed at the outer end of the guide section hole (11) and the inner side wall of the boundary section hole (12), respectively.
    [9]
    Valve element for an electronic expansion valve according to any one of claims 1 to 6, wherein six first positioning ribs (211) in three pairs and six second positioning ribs (222) in three pairs are provided, symmetrically distributed along the side wall of the guide section. (21) and the side wall of the boundary section (22) respectively, and six first positioning grooves (111) in three pairs and six second positioning grooves (121) in three pairs are provided, symmetrically distributed at the outer end of the guide section hole (11) and the inner side wall of the boundary section hole (12), respectively.
    1
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    EP2725267A1|2011-06-27|2014-04-30|Zhejiang Sanhua Co., Ltd.|Electronic expansion valve|
    CN109931408A|2017-12-18|2019-06-25|浙江盾安禾田金属有限公司|Electric expansion valve|
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    ITTO20110936A1|2011-10-18|2013-04-19|Sidel Spa Con Socio Unico|DOSING BODY FOR FILLING MACHINE|
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    CN208153754U|2018-05-14|2018-11-27|浙江中宝自控元件有限公司|A kind of high cooperation precision electric valve|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CN201910910289.3A|CN110500434A|2019-09-25|2019-09-25|A kind of spool for electric expansion valve|
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