CN111219533B - Thermal expansion valve and automobile air conditioning system - Google Patents
Thermal expansion valve and automobile air conditioning system Download PDFInfo
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- CN111219533B CN111219533B CN202010206318.0A CN202010206318A CN111219533B CN 111219533 B CN111219533 B CN 111219533B CN 202010206318 A CN202010206318 A CN 202010206318A CN 111219533 B CN111219533 B CN 111219533B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The invention discloses a thermostatic expansion valve and an automobile air conditioning system, which comprise a valve body, a power head, a push rod, a valve core component and an adjusting bolt, wherein the push rod is arranged between the valve core component and the power head, the valve body is also provided with a valve chamber, the upper part of the valve chamber is provided with a valve hole, the bottom of the valve chamber is opened and sealed by the adjusting bolt, the valve core component comprises a valve core and a guide rod, a valve core frame is not arranged in the valve chamber, an elastic component is also arranged in the valve chamber, the valve core moves towards the direction of closing the valve hole through the pretightening of the elastic component, and moves towards the valve opening direction of the valve hole through the push rod. The expansion valve provided by the invention has the advantages that the elastic component is arranged in the valve chamber, the flow path of the refrigerant is regular, the generation of turbulence is weakened, the noise factor generated by an automobile air conditioning system is eliminated, and the working performance of an automobile is improved.
Description
Technical Field
The invention relates to the technical field of refrigeration systems, in particular to an automobile air conditioning system and a thermal expansion valve.
Background
The thermostatic expansion valve is a commonly used throttling part of air conditioners and refrigeration equipment, can throttle and reduce pressure of liquid refrigerant from a condenser, and adjusts the flow of the refrigerant sent from the condenser to an evaporator according to the temperature at the outlet of the evaporator so as to adapt to the requirement of continuously changing refrigeration load. The general principle of controlling the refrigerant flow by the thermostatic expansion valve is as follows: the temperature of the outlet of the evaporator is sensed through the air box head, the medium in the air box head generates thermal expansion with corresponding degree according to the temperature sensed by the air box head, pressure is generated on the valve rod connected with the air box head through the thermal expansion, and the push rod pushes the valve core to move under the driving of the pressure, so that the opening degree of the valve hole is adjusted, and the effect of adjusting the flow of the refrigerant is achieved.
However, in the throttling process of the prior art, the valve core is elastically abutted against the valve hole through the valve core frame and the spiral spring, when a high-temperature and high-pressure refrigerant flows through the valve chamber, due to the structure of the spiral spring, the flowing direction of the refrigerant is disordered, and turbulent flow is formed in the valve chamber and can induce noise of an air-conditioning refrigeration system; in addition, when the high-temperature and high-pressure refrigerant flows through the valve chamber, the high pressure may impact the valve body frame to cause the valve body to vibrate and generate noise.
Therefore, how to reduce the noise of the air conditioning system of the automobile is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In order to solve the technical defects in the prior art, the invention provides a thermostatic expansion valve which can weaken turbulence and eliminate factors inducing noise of an air-conditioning refrigeration system. In order to achieve the purpose, the invention adopts the following technical scheme: a thermostatic expansion valve comprises a valve body, a power head, a push rod, a valve core component and an adjusting bolt, wherein the push rod is arranged between the valve core component and the power head, the valve body is also provided with a valve chamber, the upper part of the valve chamber is provided with a valve hole, the bottom of the valve chamber is opened and sealed by the adjusting bolt, the adjusting bolt is integrally formed by a base body, a connecting part with a smaller diameter than the base body and a supporting part arranged on the connecting part, the supporting part is provided with an opening part and a bottom part opposite to the opening part, the thermostatic expansion valve is characterized in that the valve core component comprises a valve core and a guide rod, a valve core frame is not arranged in the valve chamber, an elastic component is also arranged in the valve chamber, one end of the elastic component is abutted against the valve core, the other end of the elastic component is abutted against the bottom of the supporting part, and the valve core moves towards the direction of closing the valve hole through the pretightening of the elastic component, the push rod moves in the valve opening direction of the valve hole.
The elastic component is formed by disc springs which are oppositely arranged in a positive-negative direction, each disc spring comprises a disc spring body and a bottom surface, each disc spring body is approximately in a frustum shape, each bottom surface is of a plane structure, and a through hole is formed in the position of the approximate center of each bottom surface.
The guide rod is away from the bottom of the adjusting bolt by a certain distance, one end of the guide rod penetrates through the through hole, the elastic assembly is sleeved on the periphery of the guide rod, and the elastic assembly is matched with the guide rod through the through hole to restrain the transverse disturbance of the valve core component.
The adjusting bolt is characterized in that a blind hole is further formed in the position of the approximate center of the bottom of the adjusting bolt, one end of the guide rod penetrates through the blind hole, the through hole is inserted into the adjusting bolt, the elastic assembly is sleeved on the periphery of the guide rod, and the elastic assembly is matched with the guide rod through the through hole to restrain the transverse disturbance of the valve core component.
The bottom surface of the disc spring at one end of the elastic component, which is close to the valve core, is abutted or abutted against the valve core, at least part of the valve core is positioned in the through hole, and the diameter of the valve core is not smaller than the inner diameter of the through hole.
The valve core, the guide rod and the push rod are integrally formed.
The inner diameter of the through hole on the bottom surface of the disc spring is slightly larger than the diameter of the guide rod.
A thermostatic expansion valve comprises a valve body, a power head, a push rod, a valve core component and an adjusting bolt, wherein the push rod is arranged between the valve core component and the power head, the valve body is also provided with a valve chamber, the upper part of the valve chamber is provided with a valve hole, the bottom of the valve chamber is opened and sealed by the adjusting bolt, the adjusting bolt is integrally formed by a base body, a connecting part with a smaller diameter than the base body and a supporting part arranged on the connecting part, the supporting part is provided with an opening part and a bottom part opposite to the opening part, the thermostatic expansion valve is characterized in that the valve core component is a core body with a steel ball structure, a valve core frame is not arranged in the valve chamber, an elastic component is also arranged in the valve chamber, the elastic component is formed by disc springs arranged oppositely in a positive and reverse direction, each disc spring comprises a disc spring body and a bottom surface, and the disc spring body is approximately in a frustum shape, the bottom surface is of a plane structure, a through hole is further formed in the position, approximately in the center, of the bottom surface, the disc spring at one end, close to the adjusting bolt, of the elastic assembly is abutted or abutted against the bottom of the adjusting bolt to support the disc spring, the bottom surface of the disc spring at one end, close to the valve core component, of the elastic assembly is abutted or abutted against the valve core, the valve core component moves towards the direction of closing the valve hole through the pre-tightening of the elastic assembly, and moves towards the valve opening direction of the valve hole through the push rod.
Compared with the prior art, the thermal expansion valve provided by the invention has the advantages that the elastic component consisting of the disc springs with the opposite sides is arranged in the valve chamber, so that the flow trace of the refrigerant is regular when the refrigerant flows through the valve chamber, the generation of turbulence is weakened, the factors inducing the air conditioning system to generate noise are eliminated, and the working reliability of the automobile system is greatly improved; the valve core frame is not required to be additionally arranged, and the scheme that noise can be reduced by a simple structure can be easily realized.
In addition, the invention also provides an automobile air conditioning system which comprises a condenser, an evaporator and the thermostatic expansion valve, wherein the thermostatic expansion valve is the thermostatic expansion valve.
Because the automobile air conditioning system is provided with the thermal expansion valve, the automobile air conditioning system has the technical effect of the thermal expansion valve.
Drawings
FIG. 1 is a schematic representation of a prior art flow simulation of refrigerant as it flows into a valve chamber;
FIG. 2 is a schematic cross-sectional view of a thermostatic expansion valve in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of the valve core component of FIG. 2;
FIG. 4 is a schematic cross-sectional view of the adjusting bolt of FIG. 2;
FIG. 5 is a perspective view of the disc spring of FIG. 2 forming a spring assembly;
FIG. 6 is a schematic view of a fluid simulation with a resilient member disposed within the refrigerant inlet valve chamber;
FIG. 7 is a schematic cross-sectional view of another embodiment of the thermal expansion of the present invention;
FIG. 8 is a schematic view of the valve core, the guide rod and the push rod of FIG. 5 being integrally formed;
fig. 9 is a schematic cross-sectional view of a thermal expansion valve according to yet another embodiment of the present invention.
Detailed Description
In order to solve the problem of noise in an automobile air conditioning system in the prior art, the expansion valve in the combined air conditioning and refrigerating system is intensively researched. Through a number of experiments, the present inventors have found that the structure of the expansion valve in the prior art is one cause of the induction of air conditioning noise.
Referring to fig. 1, fig. 1 is a schematic view showing a prior art refrigerant flow simulation in a valve chamber, in which it can be seen that a part of the refrigerant enters an inner space of a coil spring, a part of the refrigerant flows out of the valve chamber, and the refrigerant flow direction is disordered, thereby forming turbulence in the valve chamber, which can induce noise in an air conditioning and refrigeration system.
On the basis of the above findings, the present invention further proposes a technical solution for reducing turbulence, which is described in detail below. In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention is further described below with reference to the accompanying drawings and examples.
Referring to fig. 2 and 3, fig. 2 is a schematic cross-sectional view of the thermostatic expansion valve 100. The thermostatic expansion valve 100 includes a valve body 1, a push rod 2, a valve core component 3, an adjusting bolt 4 and a power head 5. For convenience of description, an end of the valve body 1 at the upper side in the drawings is referred to as a top, and an end at the lower side is referred to as a bottom.
The power head 5 is fixed on the top of the valve body 1, the adjusting bolt 4 is fixed on the bottom of the valve body 1, the push rod 2 is positioned inside the valve body 1, one end of the push rod 2 is fixed with the power head 5, the other end of the push rod is abutted to the valve core component 3, the valve core component 3 comprises a valve core 31 and a guide rod 32, the valve core 31 is fixedly connected with the guide rod 32, and the power head can be fixed by welding.
The valve body 1 is made of a metal profile, such as an aluminum profile, and has a substantially rectangular parallelepiped shape. A first interface 11 of high-temperature and high-pressure liquid refrigerant introduced from the liquid receiver side and a second interface 12 of low-temperature and low-pressure refrigerant after being throttled and decompressed by an expansion valve and being led out to an evaporator are arranged on the side surface of the valve body 1; further, a third port 13 for introducing the refrigerant after the refrigerant is evaporated in the evaporator and a fourth port 14 for introducing the refrigerant to the compressor side are provided on the side surface of the valve body 1. The first port 11 and the second port 12 are both substantially cylindrical through holes extending in the transverse direction, and are respectively disposed on opposite sides of the lower portion of the valve body 1. In the valve body 1, a first passage is formed by the first port 11, the second port 12 and the refrigerant passage connecting them, and a second passage (corresponding to a return passage) is formed by the third port 13, the fourth port 14 and the refrigerant passage connecting them, and the second passage is a substantially cylindrical through hole that penetrates laterally through the upper portion of the valve body 1.
The valve body 1 is further provided with a valve chamber 15, the valve chamber 15 is a cylindrical stepped hole which is arranged at the bottom of the valve body and extends longitudinally, one side of the valve chamber 15 is communicated with the tail end of the first connector 11 extending into the valve body 1, the upper part of the valve chamber 15 is provided with a valve hole 6, one end of the valve hole 6 is coaxially communicated with the valve chamber 15, the other end of the valve hole 6 is communicated with the lower side (namely, the side close to the bottom of the valve body 1) of the second connector 12, the bottom of the valve chamber 15 is opened, and the bottom of the valve chamber 15 is sealed by an adjusting bolt 4. In order to prevent the refrigerant from leaking, a sealing element is arranged between the adjusting bolt 4 and the valve body 1 for sealing.
Referring to fig. 4, fig. 4 is a schematic view of the adjusting bolt 4, the adjusting bolt 4 is integrally formed by a base 41, a connecting portion 42 having a smaller diameter than the base 41, and a supporting portion 43 disposed on the connecting portion 42, the supporting portion 43 has an opening 44 and a bottom 45 opposite to the opening, the bottom 45 is further provided with a blind hole 45a at a substantially central position, and the blind hole 45a extends along a bottom direction of the valve body.
In order to provide a preload force for closing the expansion valve and to improve the operation performance of the expansion valve, an elastic member 7 is further provided in the valve chamber 15 to be engaged with the guide rod 32.
Specifically, the elastic component 7 is formed by disc springs arranged in a positive and negative opposite manner, one end of the elastic component 7, which is close to the upper portion of the valve body 1, abuts against the valve element 31, and one end, which is close to the lower portion of the valve body 1, abuts against the bottom portion 45 of the support portion, as shown in fig. 5, fig. 5 is a structural schematic diagram of the disc spring, the disc spring includes a disc spring body 71 and a bottom surface 72, the disc spring body 71 is substantially frustum-shaped, the bottom surface 72 is of a planar structure, a through hole 73 is further formed in the bottom surface 72, the guide rod 32 penetrates through the through hole 73 and is inserted into the blind hole 45a of the adjusting bolt, and the valve element 31 moves in a direction of closing the valve hole through the elastic component formed by the disc springs arranged in the positive and negative opposite manner, and moves in a valve opening direction of the valve hole 6 through the push rod.
Specifically, a disc spring bottom surface 72 of one end of the elastic component 7 close to the valve core 31 abuts against or abuts against the valve core 31, the valve core 31 is at least partially positioned in the through hole 73, and the disc spring 72 of one end of the elastic component 7 close to the adjusting bolt 4 abuts against or abuts against the adjusting bolt bottom 45 to support the disc spring.
In order to allow the guide rod 32 to move smoothly in the axial direction, the inner diameter of the through hole 73 of the bottom surface of the disc spring may be set slightly larger than the diameter of the guide rod. The number of disc springs is not less than 3, and in this embodiment, 5, and when actually installed, the number of disc springs may be set according to the system performance, and is not limited here. In the elastic member having the above-described configuration, when the valve body vibrates and generates noise due to pressure fluctuation and flow rate change of the high-pressure refrigerant entering the valve chamber, the disc spring generates a resistance force in a direction opposite to the vibration direction, and the elastic member suppresses the vibration and noise of the valve body. The expansion valve with the structure does not need to install the valve core frame in the valve chamber 15, and the expansion valve is simple in structure, convenient to install and capable of effectively reducing cost.
Through set up the elastic component that belleville spring constitutes at the guide bar periphery, elastic component gives potential energy through the cooperation of through hole and guide bar to the guide bar, and the vibration that leads to axle and case part because of the change of refrigerant pressure is suppressed, has reduced the noise.
In addition, referring to fig. 6, fig. 6 is a schematic view showing a fluid simulation of the refrigerant flowing into the valve chamber with the elastic member therein. Compared with the spiral spring in the prior art, the elastic component 7 formed by the disc springs arranged oppositely is arranged on the periphery of the guide rod 31, so that the flow path of the refrigerant is more regular when the refrigerant flows into the valve chamber 15, a stable annular flow path is formed, the generation of turbulence is weakened, the factor inducing the noise of an air conditioning system is eliminated, and the working reliability of the automobile system is greatly improved.
Referring to fig. 7 and 8, fig. 7 is a schematic cross-sectional view of another embodiment of the present invention, and fig. 8 is a schematic structural view of a rod-shaped valve core. This embodiment is different from the previous embodiment in that the valve body, the guide rod and the push rod are integrated, and vibration generated by impact between the valve body 31 and the push rod 2 is eliminated when the thermostatic expansion valve operates, thereby further reducing noise.
In order to prevent the valve element from falling out of the through hole of the disc spring during operation of the expansion valve, the diameter of the valve element in the above embodiment should be not smaller than the inner diameter of the through hole.
Further, the blind hole 45a is coaxially disposed with the push rod 2, the valve hole 6, and the valve core member 3, so that the valve core 31 can better close the valve hole 6 when the valve core member 3 reciprocates in the axial direction along with the push rod 2.
In the above embodiment, the guide rod reciprocates in the axial direction by opening the blind hole 45a in the bottom 45 of the support portion, but the present invention can be realized by other embodiments. As shown in fig. 9, fig. 9 is a schematic cross-sectional view of a thermal expansion valve according to another embodiment of the present invention, and the main difference from the above embodiment is that, in this embodiment, the support bottom 45 may not be provided with a blind hole 45a, and one end of the guide rod 31 near the lower portion of the valve body 1 is at a certain distance from the support bottom 45, where the certain distance between the guide rod 31 and the support bottom 45 is to satisfy that the valve core 31 can move in the axial direction along with the push rod 2; alternatively, the spool member 3 is only a spool of a steel ball structure. Therefore, the valve core 3 can reciprocate in the axial direction to open and close the valve hole, and other structures are similar to the above embodiment and are not described again.
When the compressor works, the first connector 11 and the second connector 12 are respectively used as an inlet and an outlet of refrigerant media, refrigerant flowing out of a condenser flows into the valve body 1 from the first connector 11, throttled and expanded into mist through the valve hole 6, flows to an evaporator through the second connector 12, flows into the third connector 13 through the evaporator, then flows through a second channel, and finally is led out to the compressor through the fourth connector 14.
The invention also provides an automobile air-conditioning system which comprises a compressor, a condenser, an evaporator and a thermostatic expansion valve, wherein the thermostatic expansion valve is in the structure in the embodiment, so that the automobile air-conditioning system adopting the thermostatic expansion valve also has the technical effect of low noise.
The thermal expansion valve provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. A thermostatic expansion valve comprises a valve body, a power head, a push rod, a valve core component and an adjusting bolt, wherein the push rod is arranged between the valve core component and the power head, the valve body is also provided with a valve chamber, the upper part of the valve chamber is provided with a valve hole, the bottom of the valve chamber is opened and sealed by the adjusting bolt, the adjusting bolt is integrally formed by a base body, a connecting part with a smaller diameter than the base body and a supporting part arranged on the connecting part, the supporting part is provided with an opening part and a bottom part opposite to the opening part, the thermostatic expansion valve is characterized in that the valve core component comprises a valve core and a guide rod, a valve core frame is not arranged in the valve chamber, an elastic component is also arranged in the valve chamber, one end of the elastic component is abutted against the valve core, the other end of the elastic component is abutted against the bottom of the supporting part, and the valve core moves towards the direction of closing the valve hole through the pretightening of the elastic component, the valve core component comprises a valve hole, a push rod, an elastic component, a blind hole and a guide rod, wherein the valve hole is formed in the valve hole, the push rod moves towards the valve opening direction of the valve hole, the elastic component is formed by a disc spring which is arranged in a positive-negative opposite mode, the disc spring comprises a disc spring body and a bottom surface, the disc spring body is approximately in a frustum shape, the bottom surface is of a plane structure, a through hole is further formed in the approximately central position of the bottom surface, the blind hole is further formed in the approximately central position of the bottom of the adjusting bolt, one end of the guide rod penetrates through the through hole, the adjusting bolt is inserted into the blind hole, the elastic component is sleeved on the periphery of the guide rod, and the elastic component is matched with the guide rod through the through hole to restrain the transverse disturbance of the valve core component.
2. The thermostatic expansion valve of claim 1, wherein the guide rod is spaced from the bottom of the adjusting bolt, one end of the guide rod passes through the through hole, the elastic component is sleeved on the periphery of the guide rod, and the elastic component is matched with the guide rod through the through hole to inhibit the lateral disturbance of the valve core component.
3. The thermostatic expansion valve of claim 1, wherein the belleville spring of the elastic component near one end of the adjusting bolt abuts or abuts against the bottom of the adjusting bolt to support the belleville spring, the bottom surface of the belleville spring of the elastic component near one end of the valve core abuts or abuts against the valve core, the valve core is at least partially positioned in the through hole, and the diameter of the valve core is not less than the inner diameter of the through hole.
4. The thermostatic expansion valve of claim 3, wherein the valve spool, guide rod, and push rod are integrally formed.
5. The thermostatic expansion valve of claim 4 wherein the bottom surface of the belleville spring has an inner diameter of the through hole that is slightly larger than the diameter of the guide rod.
6. An automotive air conditioning system comprising a condenser, an evaporator and an expansion valve, wherein the expansion valve is a thermostatic expansion valve according to claim 4 or 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010206318.0A CN111219533B (en) | 2020-03-23 | 2020-03-23 | Thermal expansion valve and automobile air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010206318.0A CN111219533B (en) | 2020-03-23 | 2020-03-23 | Thermal expansion valve and automobile air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111219533A CN111219533A (en) | 2020-06-02 |
| CN111219533B true CN111219533B (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010206318.0A Active CN111219533B (en) | 2020-03-23 | 2020-03-23 | Thermal expansion valve and automobile air conditioning system |
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| CN (1) | CN111219533B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001091107A (en) * | 1999-09-17 | 2001-04-06 | Tgk Co Ltd | Expansion valve |
| CN1912429A (en) * | 2005-08-12 | 2007-02-14 | 浙江三花制冷集团有限公司 | Temp. expansion valve |
| CN1959164A (en) * | 2005-10-31 | 2007-05-09 | 汉拏空调株式会社 | Expansion valve for rear seat air conditioner |
| CN101101065A (en) * | 2006-07-07 | 2008-01-09 | 浙江三花制冷集团有限公司 | Thermal expansion valve |
| CN101545551A (en) * | 2008-03-26 | 2009-09-30 | 株式会社不二工机 | Pressure control valve |
| KR20120008947A (en) * | 2010-07-21 | 2012-02-01 | 현대자동차주식회사 | Expansion valve of air conditioner system for vehicle |
-
2020
- 2020-03-23 CN CN202010206318.0A patent/CN111219533B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001091107A (en) * | 1999-09-17 | 2001-04-06 | Tgk Co Ltd | Expansion valve |
| CN1912429A (en) * | 2005-08-12 | 2007-02-14 | 浙江三花制冷集团有限公司 | Temp. expansion valve |
| CN1959164A (en) * | 2005-10-31 | 2007-05-09 | 汉拏空调株式会社 | Expansion valve for rear seat air conditioner |
| CN101101065A (en) * | 2006-07-07 | 2008-01-09 | 浙江三花制冷集团有限公司 | Thermal expansion valve |
| CN101545551A (en) * | 2008-03-26 | 2009-09-30 | 株式会社不二工机 | Pressure control valve |
| KR20120008947A (en) * | 2010-07-21 | 2012-02-01 | 현대자동차주식회사 | Expansion valve of air conditioner system for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111219533A (en) | 2020-06-02 |
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