CN214404714U - Automobile air conditioner expansion valve with novel transmission structure - Google Patents
Automobile air conditioner expansion valve with novel transmission structure Download PDFInfo
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- CN214404714U CN214404714U CN202023225201.1U CN202023225201U CN214404714U CN 214404714 U CN214404714 U CN 214404714U CN 202023225201 U CN202023225201 U CN 202023225201U CN 214404714 U CN214404714 U CN 214404714U
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Abstract
The utility model relates to an automobile air conditioner expansion valve with a novel transmission structure, wherein a transmission plate is arranged inside an air box, the bottom of the transmission plate is fixedly connected with the top of a transmission rod, the bottom of the transmission rod is fixedly connected with the middle part of a horizontal lever arm after passing through a spring limiting plate, an adjusting spring sleeve is sleeved on the transmission rod, the top end of the adjusting spring is fixedly connected with the bottom of the transmission plate, and the bottom end of the adjusting spring is fixedly connected with the spring limiting plate; one end of the horizontal lever arm is fixedly connected with the rotating shaft, the other end of the horizontal lever arm is fixedly connected with one end of the balance spring, the other end of the balance spring is fixedly connected with the boss in the refrigerant outlet channel, the top end of the vertical lever arm is fixedly connected with the rotating shaft, the bottom end of the vertical lever arm is provided with a valve core seat used for fixing the spherical valve core, and the spherical valve core is positioned at the vertical port of the refrigerant inlet channel in the valve body. The utility model discloses a detection reliability is higher, and the hysteresis is lower simultaneously, and it is higher to adjust the precision, is favorable to further improving vehicle air conditioner's refrigeration efficiency.
Description
Technical Field
The utility model relates to an automobile refrigeration equipment technical field especially relates to an automobile air conditioner expansion valve with novel transmission structure.
Background
Automotive air conditioners have become important parts of automobiles, and expansion valves are one of the important components of automotive air conditioners. The expansion valve is used for throttling and reducing pressure, before the refrigerant enters the evaporator, the medium-temperature high-pressure refrigerant liquid is changed into low-temperature low-pressure wet steam, and then the refrigerant absorbs heat in the evaporator to achieve the refrigeration effect. At present, the type of expansion valve for automobile air conditioner is thermal expansion valve, electronic expansion valve, etc., wherein the thermal expansion valve is roughly divided into three parts of valve body, temperature sensing bulb and balance tube, when in operation, the temperature sensing bulb fixed on the outlet pipeline of the evaporator senses the overheat temperature of the outlet of the evaporator, so that the pressure is generated in the temperature sensing bulb and is transmitted to the space above the diaphragm by the capillary tube, the diaphragm transmits the signal to the actuating mechanism (including the driving piece with certain elasticity) in the elastic deformation mode under the action of the pressure, thereby adjusting the opening degree of the valve, controlling the flow of the refrigerant and adjusting the temperature. However, most of the current expansion valves for automobile air conditioners use a transmission piece with certain elasticity, the valve core opening and closing sensitivity of the expansion valve is greatly influenced by the elastic deformation performance of the transmission piece, and for the expansion valve used for a long time, the elastic deformation performance of the transmission piece can be changed, so that the opening and closing hysteresis of the valve core is increased, and the refrigeration efficiency of the automobile air conditioner is influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, the automobile air conditioner expansion valve with the novel transmission structure is necessary to solve the problems that elastic deformation performance of a transmission piece of the automobile air conditioner expansion valve is easy to change, the opening and closing hysteresis of a valve core is increased, and the refrigeration efficiency of the automobile air conditioner is affected in the prior art.
In order to solve the above problem, the utility model adopts the following technical proposal:
an automobile air conditioner expansion valve with a novel transmission structure comprises a valve body, a ball valve core, an air box, a corrugated diaphragm and a transmission structure, wherein the transmission structure comprises a transmission plate, an adjusting spring, a spring limiting plate, a transmission rod, a balance spring, a rotating shaft, a horizontal lever arm and a vertical lever arm;
the air box comprises an air box base and an air box cover in sealing fit with the air box base, the top of the air box cover is provided with a hole for connecting with a capillary tube, the corrugated diaphragm is fixed in the air box, and the corrugated diaphragm and the air box cover are sealed;
the transmission plate is arranged inside the air box, the bottom of the transmission plate is fixedly connected with the top of the transmission rod, the bottom of the transmission rod is fixedly connected with the middle part of the horizontal lever arm after the transmission rod penetrates through the spring limiting plate, the adjusting spring is sleeved on the transmission rod, the top end of the adjusting spring is fixedly connected with the bottom of the transmission plate, and the bottom end of the adjusting spring is fixedly connected with the spring limiting plate;
one end of the horizontal lever arm is fixedly connected with the rotating shaft, the other end of the horizontal lever arm is fixedly connected with one end of the balance spring, the other end of the balance spring is fixedly connected with the boss in the refrigerant outlet channel, the top end of the vertical lever arm is fixedly connected with the rotating shaft, the bottom end of the vertical lever arm is provided with a valve core seat, the ball valve core is fixed in the valve core seat, the ball valve core is located at the vertical port of the refrigerant inlet channel in the valve body, the rotating shaft is rotatably connected with the inner wall of the refrigerant outlet channel, and the axial direction of the rotating shaft is perpendicular to the direction of the central axis of the refrigerant inlet channel.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a vehicle air conditioner expansion valve with novel transmission structure, this vehicle air conditioner expansion valve utilizes driving plate and regulating spring to realize the detection to the deformation of ripple diaphragm, it does not rely on the elastic deformation performance of driving plate, and is influenced by the elastic deformation performance of regulating spring, compared with the driven driving piece, the elastic deformation performance of regulating spring is more reliable and more stable, the detection reliability of expansion valve is improved, simultaneously this vehicle air conditioner expansion valve utilizes horizontal lever arm, pivot and vertical lever arm to form the lever, under the power action of driving plate and driving rod, utilize lever principle to realize the control that the case opened and close, the driving rod exerts less pressure and can realize the removal to the case, therefore the thermal expansion valve of the invention can respond in time to the temperature of the evaporimeter gas outlet that changes less, the hysteresis is lower, the adjusting precision is higher, and the refrigerating efficiency of the automobile air conditioner is further improved.
Drawings
Fig. 1 is a cross-sectional view of an expansion valve of an automobile air conditioner with a novel transmission structure according to the present invention;
in the figure, 1, a valve body; 2. a spherical valve core; 3. a corrugated diaphragm; 4. a drive plate; 5. adjusting the spring; 6. a spring limiting plate; 7. a transmission rod; 8. a balance spring; 9. a rotating shaft; 10. a horizontal lever arm; 11. a vertical lever arm; 12. a gas tank base; 13. a gas tank cover; 14. a capillary tube; 15. a refrigerant outlet passage; 16. a refrigerant inlet channel.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
In one embodiment, as shown in fig. 1, the utility model provides a vehicle air conditioner expansion valve with novel transmission structure, this vehicle air conditioner expansion valve includes valve body 1, spheroid case 2, gas tank, ripple diaphragm 3 and transmission structure, and wherein transmission structure includes driving plate 4, adjusting spring 5, spring limiting plate 6, transfer line 7, balance spring 8, pivot 9, horizontal lever arm 10 and vertical lever arm 11.
Specifically, in the present embodiment, the air box includes an air box base 12 and an air box cover 13, the air box cover 13 seals the air box base 12, meanwhile, the top of the air box cover 13 is provided with an opening for connecting with a capillary tube 14, the capillary tube 12 is used for connecting with a temperature sensing bulb, the temperature sensing bulb is filled with a temperature sensitive medium, and the temperature sensing bulb is arranged on a return air pipe at the outlet of the steam pipe for sensing the temperature change of the return air. The corrugated membrane 3 is fixed inside the air box and the corrugated membrane 3 is sealed with the air box cover 13.
Drive plate 4 in this embodiment is the hard board, and it is not elastic, drive plate 4 sets up the inside at the gas tank, and the bottom of drive plate 4 and the top fixed connection of transfer line 7, after transfer line 7 passed spring limiting plate 6, the bottom of transfer line 7 and the middle part fixed connection of horizontal lever arm 10, adjusting spring 5 is located the gas tank, and adjusting spring 5 cover is established on transfer line 7, adjusting spring 5's top and drive plate 4's bottom fixed connection, adjusting spring 5's bottom and spring limiting plate 6 fixed connection.
One end of a horizontal lever arm 10 is fixedly connected with the rotating shaft 9, the other end of the horizontal lever arm 10 is fixedly connected with one end of a balance spring 8, and the other end of the balance spring 8 is fixedly connected with a boss in a refrigerant outlet channel 15; the top end of the vertical lever arm 11 is fixedly connected with the rotating shaft 9, the bottom end of the vertical lever arm 11 is provided with a valve core seat, the ball valve core 2 is fixed in the valve core seat, a port of a refrigerant inlet channel 16 in the valve body 1 is vertically upward, the ball valve core 2 is positioned at the vertical port of the refrigerant inlet channel 16, the rotating shaft 9 is rotatably connected with the inner wall of a refrigerant outlet channel 15, and the axial direction of the rotating shaft 9 is perpendicular to the central axis direction of the refrigerant inlet channel 16.
The working principle of the thermostatic expansion valve of the embodiment is as follows:
when the temperature of the return air is increased by the temperature sensing bulb, the gas pressure between the corrugated diaphragm 3 and the gas tank cover 13 is increased, the corrugated diaphragm 3 deforms and further extrudes the transmission plate 4, so that the transmission plate 4 moves downwards, the adjusting spring 5 compresses, the transmission plate 4 drives the transmission rod 7 connected with the transmission plate to move downwards, the transmission rod 7 compresses the balance spring 8, the horizontal lever arm 10 drives the rotating shaft 9 to rotate clockwise, the rotating shaft 9 drives the vertical lever arm 11 connected with the rotating shaft 9 to rotate clockwise, the spherical valve core 2 fixed in the valve core seat on the vertical lever arm 11 moves leftwards along with the vertical lever arm 11, so that the spherical valve core 2 is separated from the vertical port of the refrigerant inlet channel 13, and the flow of the refrigerant is increased;
after the flow of refrigerant increases, when the temperature of response return air of temperature sensing package reduces, the gas pressure between ripple diaphragm 3 and the gas tank lid 13 reduces, ripple diaphragm 3 takes place the deformation and reduces, driving plate 4 drives the drive rod 7 upward movement rather than being connected, balancing spring 8 extends, horizontal lever arm 10 drives pivot 9 anticlockwise rotation, pivot 9 then drives the perpendicular lever arm 11 anticlockwise rotation rather than being connected, fix the spheroid case 2 of valve core seat on perpendicular lever arm 11 and move right along with perpendicular lever arm 11, make spheroid case 2 be close to the vertical port of refrigerant inlet channel 13, thereby reduce the flow of refrigerant.
The embodiment provides an automobile air-conditioning expansion valve with a novel transmission structure, which utilizes a transmission plate and an adjusting spring to realize the detection of the deformation of a corrugated diaphragm, does not depend on the elastic deformation performance of the transmission plate, is influenced by the elastic deformation performance of the adjusting spring, has more stable and reliable elastic deformation performance of the adjusting spring compared with a transmission sheet for transmission, improves the detection reliability of the expansion valve, simultaneously utilizes a horizontal lever arm, a rotating shaft and a vertical lever arm to form a lever, utilizes the lever principle to realize the control of the opening and closing of a valve core under the power action of the transmission plate and the transmission rod, and can realize the movement of the valve core by applying smaller pressure on the transmission rod, so the thermostatic expansion valve can respond to the temperature of an evaporator air outlet with smaller change in time, has lower hysteresis and higher adjusting precision, the refrigeration efficiency of the automobile air conditioner is further improved.
Preferably, the material of the rotating shaft 9 is stainless steel.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (2)
1. An automobile air conditioner expansion valve with a novel transmission structure is characterized by comprising a valve body (1), a ball valve core (2), an air box, a corrugated diaphragm (3) and a transmission structure, wherein the transmission structure comprises a transmission plate (4), an adjusting spring (5), a spring limiting plate (6), a transmission rod (7), a balance spring (8), a rotating shaft (9), a horizontal lever arm (10) and a vertical lever arm (11);
the air box comprises an air box base (12) and an air box cover (13) in sealing fit with the air box base (12), the top of the air box cover (13) is provided with an opening used for being connected with a capillary tube (14), the corrugated membrane (3) is fixed in the air box, and the corrugated membrane (3) and the air box cover (13) are sealed;
the transmission plate (4) is arranged inside the air box, the bottom of the transmission plate (4) is fixedly connected with the top of the transmission rod (7), the transmission rod (7) penetrates through the spring limiting plate (6) and then is fixedly connected with the middle part of the horizontal lever arm (10), the adjusting spring (5) is sleeved on the transmission rod (7), the top end of the adjusting spring (5) is fixedly connected with the bottom of the transmission plate (4), and the bottom end of the adjusting spring (5) is fixedly connected with the spring limiting plate (6);
one end of the horizontal lever arm (10) is fixedly connected with the rotating shaft (9), the other end of the horizontal lever arm (10) is fixedly connected with one end of the balance spring (8), the other end of the balance spring (8) is fixedly connected with a boss in the refrigerant outlet channel (15), the top end of the vertical lever arm (11) is fixedly connected with the rotating shaft (9), the bottom end of the vertical lever arm (11) is provided with a valve core seat, the spherical valve core (2) is fixed in the valve core seat, the spherical valve core (2) is located at the vertical port of the refrigerant inlet channel (16) in the valve body (1), the rotating shaft (9) is rotatably connected with the inner wall of the refrigerant outlet channel (15), and the axial direction of the rotating shaft (9) is perpendicular to the direction of the central axis of the refrigerant inlet channel (16).
2. The expansion valve for air conditioner of car with new transmission structure as claimed in claim 1,
the rotating shaft (9) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023225201.1U CN214404714U (en) | 2020-12-28 | 2020-12-28 | Automobile air conditioner expansion valve with novel transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023225201.1U CN214404714U (en) | 2020-12-28 | 2020-12-28 | Automobile air conditioner expansion valve with novel transmission structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214404714U true CN214404714U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023225201.1U Active CN214404714U (en) | 2020-12-28 | 2020-12-28 | Automobile air conditioner expansion valve with novel transmission structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214404714U (en) |
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2020
- 2020-12-28 CN CN202023225201.1U patent/CN214404714U/en active Active
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