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CN-224215605-U - Bidirectional self-adaptive throttle valve and refrigeration equipment

CN224215605UCN 224215605 UCN224215605 UCN 224215605UCN-224215605-U

Abstract

The two-way self-adaptive throttle valve at least comprises two tee structures and two one-way self-adaptive throttle valves or valve cores, wherein the two one-way self-adaptive throttle valves or valve cores are respectively connected in anti-parallel with each other by the two tee structures to form an integral structure with two interfaces. The unidirectional self-adaptive throttle valve or the valve core at least comprises a valve body, a valve seat, a valve needle spring, an adjusting spring and a limiting block, wherein the valve seat and the limiting block are respectively arranged in the valve body, the valve needle spring, the valve needle, the adjusting spring and the like are sequentially arranged in the valve body between the valve seat and the limiting block, the valve needle spring is sleeved on the outer side of the front section of the valve needle, the adjusting spring is arranged between the valve needle and the adjusting limiting block, and the valve needle can axially move in the valve body under the action of force to close or open the valve port. The utility model can realize variable flow bidirectional throttling, has small valve needle oscillation and high reliability, and can simplify and automate the control problem of the throttling mechanism.

Inventors

  • WU JUNYUN

Assignees

  • 上海昶协实业有限公司

Dates

Publication Date
20260508
Application Date
20250602

Claims (10)

  1. 1. The bidirectional self-adaptive throttle valve is characterized in that the two unidirectional self-adaptive throttle valves or valve spools are respectively and fixedly connected in parallel in an opposite direction by using two tee structures to form an integral structure with two interfaces, the unidirectional self-adaptive throttle valve or valve spools at least comprise a valve body, a valve seat, a valve needle spring, an adjusting spring and a limiting block, the valve seat is integrally or partially arranged in the valve body or the front section part of the valve body is inserted into the valve seat and is fixedly connected or the valve seat and the valve body are integrally formed, the limiting block is integrally or partially arranged in the valve body or the rear section part of the valve body is inserted into the front section of the limiting block, the limiting block and the valve body are fixedly connected together or are connected through threads between screw sleeves fixed on the inner wall of the valve body, the valve needle spring, the valve needle, the adjusting spring and the like are sequentially arranged in the valve body between the valve seat and the limiting block, the valve seat is provided with a throttle hole, the front end needle part and the valve needle front section is inserted into the valve seat, the valve needle front section is arranged at the outer side of the valve seat, the valve needle is opposite to the valve seat is arranged at the end part, the valve seat is opposite to the valve seat, the valve needle is arranged at the end part is opposite to the valve seat, the valve seat is arranged at the valve seat is opposite to the valve seat, and the valve seat is opposite to the valve seat.
  2. 2. The bi-directional adaptive throttle valve of claim 1, wherein the valve seat is an assembly comprising at least a valve seat body and a valve bore core, the valve bore core being provided with a throttle valve bore, the valve seat body being provided with an axial bore, the valve bore core being nested and secured to the valve seat body at the axial bore.
  3. 3. A bi-directional adaptive throttle valve as defined in claim 1, wherein the valve body and the valve seat are of unitary construction.
  4. 4. A bi-directional adaptive throttle valve as claimed in claim 1 wherein the tail or tail end of the valve needle may be provided with a step or groove or recess or be a bore or hole or a stem.
  5. 5. A bi-directional adaptive throttle valve as claimed in claim 1, wherein the front or front end of the limiting block is provided with a step or a ring groove or a bore or a hole or a thin rod.
  6. 6. The bi-directional self-adaptive throttle valve of claim 1, wherein the limiting block is provided with a fluid channel which is communicated with two end surfaces.
  7. 7. The bi-directional adaptive throttle valve of claim 1, wherein the valve body and the stop block are of unitary construction.
  8. 8. The bi-directional adaptive throttle valve of claim 1, wherein an axial flow channel is provided on or outside the stopper.
  9. 9. The bi-directional adaptive throttle valve of claim 1, wherein the structural style of the two unidirectional adaptive throttle valves or spools may be different or the same.
  10. 10. A refrigerating apparatus of two-way adaptive throttling, wherein the refrigerating apparatus of two-way adaptive throttling comprises a two-way adaptive throttling valve structure as set forth in any of claims 1 to 9.

Description

Bidirectional self-adaptive throttle valve and refrigeration equipment Technical Field The utility model relates to the technical field of refrigeration, in particular to a self-adaptive throttle valve and self-adaptive throttle refrigeration equipment. Background In the prior art, the throttling means between the evaporator and the condenser of the refrigeration equipment are generally adjustable flow elements, such as electronic expansion valves and the like, and non-adjustable flow elements, such as capillaries, throttle pipes (valves) and the like. The current adjustable flow element has higher cost, and particularly, the electronic expansion valve also needs to be provided with a corresponding control strategy, is easy to be blocked and has lower reliability. The throttling mode of the non-adjustable flow element can only provide a throttling effect with a fixed length or a fixed opening, the throttling effect cannot be adjusted according to the flow and the pressure change at two sides, the throttling working condition has poor adaptability, but the cost is lower, and the throttling device is still used in a large amount in refrigeration equipment. However, in an air conditioning system using a throttle valve as a throttling device, the throttle valve changes the throttle direction by means of the high-low pressure conversion of the system, but in actual use, the valve needle of the throttle valve is blocked, so that the normal operation of the air conditioner is affected. In addition, the valve needle of the throttle valve is easy to vibrate in the axial movement process, and vortex is generated when the refrigerant flows through the throttle valve, so that mechanical noise and flow noise are generated. If the throttling effect of flow adaptability can be realized on the throttling pipe (valve) and the variable flow self-adaptive throttling is realized, not only the material and manufacturing cost can be saved, but also the cost of a control strategy can be saved. Therefore, how to simplify the control problem of the throttle mechanism, to automate the simple problem and adapt to the bidirectional switching of refrigeration/heating, and how to realize the variable flow of the throttle valve or the self-adaptive throttling under variable pressure, reduce noise, reduce failure rate, facilitate maintenance and replacement, improve the reliability of equipment operation, and simultaneously adapt to the requirements of refrigeration and heating are pursued by industry engineers and researchers. Disclosure of Invention In order to overcome the defects and shortcomings of the prior art, the utility model provides the bidirectional self-adaptive throttling valve and the bidirectional self-adaptive throttling refrigeration equipment, which effectively solve the problems that the existing expansion valve cannot realize the self-adaptive throttling effect under variable flow or variable pressure difference, maintain the refrigeration or heating effect, reduce the risk of blocking and noise, reduce noise, effectively improve the operation reliability of the refrigeration equipment and effectively and rapidly realize the refrigeration and heating requirements. For this purpose, the utility model adopts the following technical scheme: To this end, a first aspect of the present utility model proposes a bi-directional adaptive throttle valve. The second aspect of the utility model provides a refrigeration device with bidirectional adaptive throttling. According to one aspect of the utility model, the method is realized by the following technical scheme: The two-way self-adaptive throttle valve comprises at least two tee structures and two one-way self-adaptive throttle valves or valve cores, wherein the two one-way self-adaptive throttle valves or valve cores are respectively connected in anti-parallel with each other by the two tee structures to form an integral structure with two interfaces. The valve seat is wholly or partially arranged in the valve body or the front section part of the valve body is inserted into the valve seat and fixedly connected with the valve seat is opposite to the valve port of the throttle valve hole, the whole or partially arranged in the valve body or the rear section part of the valve body is inserted into the front section of the stopper or the stopper and the valve body are integrally connected, the stopper and the valve body are fixedly connected together or are connected through threads between silk sleeves fixed on the inner wall of the valve body, the valve needle spring, the valve needle, the regulating spring and the like are sequentially arranged in the valve body between the valve seat and the stopper, the valve needle is provided with a throttle valve hole, the front end of the valve needle spring is sleeved on the outer side of the front section of the valve needle, one end of the valve needle spring is arranged on the valve needle, the other end of the valve needle spring