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Electronic expansion valve and cooling system provided with same

An electronic expansion valve and valve needle technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of inability to achieve high precision, miniaturization, and increase the range of flow adjustment, and achieve high stroke control accuracy and increase. The effect of a large flow adjustment range

Active Publication Date: 2019-06-11
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an electronic expansion valve and a refrigeration system with it, so as to solve the problem that the electronic expansion valve in the prior art cannot meet the requirements of high precision and miniaturization while increasing the flow adjustment range

Method used

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  • Electronic expansion valve and cooling system provided with same
  • Electronic expansion valve and cooling system provided with same
  • Electronic expansion valve and cooling system provided with same

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Embodiment Construction

[0030] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0031] like Figure 3 to Figure 10As shown, the electronic expansion valve of the present embodiment includes: a valve seat 10 , a valve needle 20 , a driving mechanism 30 , a planetary gear reduction mechanism 40 and a transmission mechanism 50 , wherein the valve seat 10 has a cavity 6 and a connection with the cavity 6 . The valve port portion 11 . The valve needle 20 is movably disposed in the cavity 6 , and the valve needle 20 has an open position to open the valve port portion 11 and a closed position to block the valve port portion 11 . The drive mechanism 30 includes a rotor 32 and a coil 31 surrounding the outer side of the rotor 32 in the circumferential dir...

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Abstract

The invention provides an electronic expansion valve and a cooling system provided with the same. The electronic expansion valve comprises a valve seat, a valve needle provided with an opening position and a closing position, a driving mechanism comprising a rotor and coils and a planet gear reducing mechanism and a transmission mechanism, wherein the planet gear reducing mechanism comprises a planet frame, planet wheels and a gear box, the rotor, the planet frame and the gear box are coaxially arranged, the rotor is fixedly connected with the planet frame to drive the planet frame to rotate along the axis of the rotor, the planet wheels sleeve first mounting shafts, the gear box comprises a box body, a fixed inner gear ring and an output inner gear ring, and the planet wheels are engagedwith the fixed inner gear ring and the output inner gear ring at the same time; and the transmission mechanism comprises a nut and screw rod, a first end of the screw rod is fixedly connected with theoutput inner gear ring, a second end of the screw rod abuts against the valve needle, and thus the valve needle can move between the opening position and the closing position. According to the technical scheme of the electronic expansion valve and the cooling system provided with the same, the problem that the requirements of high precision and miniaturization can not be met while the flow regulation range is increased through the electronic expansion valve in the prior art is effectively solved.

Description

technical field [0001] The invention relates to the field of refrigeration, in particular to an electronic expansion valve and a refrigeration system having the same. Background technique [0002] figure 1 A typical deceleration type electronic expansion valve structure is shown. The deceleration type electronic expansion valve for inverter air conditioner is mainly composed of two parts, one part is the valve body part for flow regulation, and the other part is the coil part used for driving. The coil part includes: a permanent magnet stepping motor 1', a gear reducer 2' with three-stage deceleration, a threaded pair structure 5' that converts the motor's rotational motion into the vertical motion of the screw 3', and the valve body includes a valve seat 10', and the core components such as the spring 7 that controls the valve needle 8 to rise and fall. The working principle of the above-mentioned electronic expansion valve is introduced as follows: First, the electronic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06F16K31/50F16K31/53F16K1/00F16K1/32F25B41/06F25B41/34
CPCF16K31/53F16K31/50F16H1/20F16H2057/02034F16H57/08F16H57/0006F25B41/35Y02B30/70F16K27/048F16H57/02F16K31/502
Inventor 不公告发明人
Owner ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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