A fluid control device for air conditioning with protective performance

Abstract

A fluid control device for air conditioning, comprising a shell, a coil assembly, a guide sleeve, a cross pipe, a rotor, a valve needle, a nut, a valve body, a first hole, a block, a vertical pipe, a retaining ring assembly, a heightening plate, a connecting plate, a screw plug, a bypass passage, a stepped hole, and a second hole; wherein the shell is provided above the valve body, the coil assembly is provided outside the shell, and the rotor, valve needle, guide sleeve, and nut are provided inside the shell; the guide sleeve is provided below the top wall of the shell, the upper end of the valve needle is accommodated in the guide sleeve, and the rotor can drive the valve needle to rotate.

Description

Technical Field

[0001] The present invention relates to the field of comprehensive support vehicles, and in particular to a fluid control device for air conditioners with protective performance. Background Art

[0002] Comprehensive support vehicles are military and civilian vehicles with multiple functions, enabling comprehensive and adaptable applications in a wide range of terrain environments. The light protected assault vehicle, built by Hengyang Tellhow, serves as one of the foundational platforms for light, highly mobile troop equipment. It can serve as a combat platform for infantry combat squads at the lowest level. Its command and control, comprehensive support, and communications systems are relatively complex, and its comprehensive support performance needs further improvement.

[0003] In actual practice, the following problems exist:

[0004] 1. The comprehensive support vehicle in the prior art is equipped with air-conditioning equipment. Unlike a family car, the air-conditioning equipment is often external, similar to the outdoor unit of a household air conditioner, but different from the outdoor unit of a household air conditioner. Since the comprehensive support vehicle works outdoors, the outdoor working environment is complex, and the comprehensive support vehicle generally works on complex road conditions. Bumps, vibrations, wind and sand will affect the internal structure of the vehicle. Since the air-conditioning refrigeration circuit is affected by bumps or wind and sand, it is impossible for the entire air-conditioning system to be perfectly sealed. Therefore, impurities such as wind and sand, oxide scale shed by bumps and impacts, and metal impurities will enter the refrigeration circuit. The air-conditioning system is equipped with an electronic expansion valve, which has a small needle hole and is easily blocked by impurities. The prior art can only disassemble the electronic expansion valve for maintenance, and the overall disassembly and maintenance cost is high and the time cost is also high.

[0005] 2. When the air conditioner in the prior art is clogged, it can only be repaired to eliminate the fault. However, the air conditioner cannot be used normally for a period of time before the fault is eliminated, resulting in a large waste of time and cost.

[0006] 3. In the prior art, when the electronic expansion valve of an air conditioner is clogged, impurities that clog the valve port of the electronic expansion valve are likely to fall out and enter the refrigeration cycle, and the impurities cannot be removed in time.

[0007] 4. When the refrigerant of the air conditioner in the prior art enters the electronic expansion valve, a vortex will occur in the valve cavity due to the sudden reduction of the valve port path, causing unexpected vibration or abnormal noise.

[0008] 5. The electronic expansion valve in the prior art is not very large, and machining through holes will reduce the overall strength and increase the cost. However, the art expects to provide more functions, so more machining is required. The two are contradictory. Summary of the Invention

[0009] In order to overcome the above problems, the present invention proposes a solution to solve the above multiple problems at the same time.

[0010] The technical solution adopted by the present invention to solve its technical problem is: a fluid control device for air conditioning, comprising a housing, a coil assembly, a guide sleeve, a transverse pipe, a rotor, a valve needle, a nut, a valve body, a first hole, a stopper, a vertical pipe, a retaining ring assembly, a heightening plate, a connecting plate, a screw plug, a bypass passage, a stepped hole, and a second hole; wherein the housing is provided above the valve body, the coil assembly is provided outside the housing, and the rotor, valve needle, guide sleeve, and nut are provided inside the housing;

[0011] The guide sleeve is arranged below the top wall of the housing, the upper end of the valve needle is accommodated in the guide sleeve, and the rotor can drive the valve needle to rotate; the nut is fixed above the bottom wall of the housing, the valve needle extends downward through the nut, the left side of the valve body is connected to the horizontal pipe, and the lower end of the valve body is provided with a surrounding portion, which is sleeved and connected to the upper end of the vertical pipe;

[0012] The right side of the valve body is provided with the stepped hole, the stepped hole includes a large diameter section and a small diameter section, the screw plug is arranged in the large diameter section, and a bypass passage is further provided in the inner wall of the valve body, the bypass passage includes a transverse channel and a vertical channel, the transverse channel is connected to the inner cavity of the valve body, the upper end of the vertical channel is connected to the transverse channel, and the lower end is connected to the small diameter section; the valve body is provided with a valve port to accommodate the valve needle, the small diameter section is connected to the valve port, the valve port includes the first hole and the second hole, the second hole is located below the first hole, and the second hole includes a trapezoidal cross-section; the lower end of the second hole is connected to the retaining ring assembly, the retaining ring assembly includes an inner ring and a connecting rod, the inner ring is connected to the lower end of the second hole by the connecting rod, and the diameter of the inner ring is smaller than the diameter of the first hole;

[0013] The valve needle is connected to the connecting plate, the heightened plate is provided above the connecting plate, the inner side of the stopper is connected to the connecting plate, and the upper end of the stopper is connected to the heightened plate. When the valve needle is closed, the stopper closes the bypass passage.

[0014] Furthermore, the small diameter section is connected to the second hole.

[0015] Furthermore, the small-diameter section is connected to the lower end of the first hole.

[0016] Furthermore, the number of the connecting rods is four.

[0017] Furthermore, when the valve needle is in the open state, the stopper does not close the bypass passage.

[0018] Furthermore, the trapezoidal cross section is an isosceles trapezoidal cross section.

[0019] Furthermore, the surrounding portion is threadedly connected to the vertical pipe.

[0020] Furthermore, an opening is provided above the valve body, and an opening is provided below the shell.

[0021] Furthermore, a slide rail and a slide plate are provided on the outer surface of the valve body, and the slide plate can slide along the circumferential direction in the slide rail to close or expose the screw plug.

[0022] Furthermore, the stopper includes a curved surface.

[0023] The beneficial effects of the present invention are:

[0024] 1. Regarding the first point raised in the background technology, a maintenance hole is opened on the valve body and sealed with a screw plug. Due to the outdoor bumpy characteristics of car air conditioners, the frequency of sealing failures is higher than that of household air conditioners, and the maintenance support in complex outdoor environments is weaker than that of household air conditioners. Therefore, the design of the maintenance hole enables rapid maintenance.

[0025] 2. In response to the second point raised in the background technology, a bypass channel is provided to prevent the air conditioner from being unable to work normally after the valve port is blocked and before maintenance.

[0026] 3. In response to the third point raised in the background technology, a conical second through hole is designed at the valve port. When impurities are touched by special maintenance tools or even iron wire, the impurities will fall into the second through hole. Since the inner ring in the second through hole has a small diameter, the impurities will fall vertically and be blocked above the inner ring and will not fall back into the refrigeration cycle. At the same time, when working normally, since the distance between the inner ring and the outer ring is large, even if there are smaller impurities, the valve port cannot be blocked.

[0027] 4. The fourth point raised in response to the background technology is actually to assist in solving the problem with the help of other structures. The valve needle is connected to the connecting plate, and the connecting plate is connected to the block. The block will block the bypass channel and at the same time play the role of guiding and supporting the valve needle. A heightening plate is provided above the connecting plate. The height of the combined plate of the heightening plate and the connecting plate can block the swirl in the valve cavity to a certain extent, thereby avoiding the generation of excessive swirl. In this way, three problems are solved through one structure: valve needle guide support, blocking the bypass channel, and blocking excessive swirl.

[0028] 5. Regarding point 5 of the background technology, the maintenance hole and part of the bypass hole are shared, and two functions are realized by using one hole. In order to coordinate the functions between different holes, the shared maintenance hole is designed as a stepped hole, with a maintenance hole set in the large hole section and a bypass hole in the small hole section, thereby simplifying the processing structure.

[0029] Note: The above designs are not listed in any particular order, and each one makes the present invention distinctive and significantly advanced compared to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings and examples.

[0031] Figure 1 This is a schematic diagram of the fluid control device of the present invention in the open state

[0032] Figure 2 This is a schematic diagram of the closed state of the fluid control device of the present invention

[0033] Figure 3 This is a top view of the guide opening and closing blocking component structure of the present invention

[0034] Figure 4 This is a top view of the retaining ring assembly of the present invention

[0035] In the figures, the reference numerals are as follows:

[0036] 1. Housing 2. Coil assembly 3. Guide sleeve 4. Cross tube 5. Rotor 6. Valve needle 7. Nut 8. Valve body 9. First hole 10. Stopper 11. Vertical tube 12. Retaining ring assembly 13. Heightening plate 14. Connecting plate 15. Plug 16. Bypass passage 17. Stepped hole 18. Second hole 19. Inner ring 20. Connecting rod 21. Enclosure DETAILED DESCRIPTION

[0037] As shown in the figure: a fluid control device for an air conditioner, comprising a housing, a coil assembly, a guide sleeve, a transverse pipe, a rotor, a valve needle, a nut, a valve body, a first hole, a stopper, a vertical pipe, a retaining ring assembly, a heightening plate, a connecting plate, a screw plug, a bypass passage, a stepped hole, and a second hole; wherein the housing is provided above the valve body, the coil assembly is provided outside the housing, and the rotor, valve needle, guide sleeve, and nut are provided inside the housing;

[0038] The guide sleeve is arranged below the top wall of the housing, the upper end of the valve needle is accommodated in the guide sleeve, and the rotor can drive the valve needle to rotate; the nut is fixed above the bottom wall of the housing, the valve needle extends downward through the nut, the left side of the valve body is connected to the horizontal pipe, and the lower end of the valve body is provided with a surrounding portion, which is sleeved and connected to the upper end of the vertical pipe;

[0039] The right side of the valve body is provided with the stepped hole, the stepped hole includes a large diameter section and a small diameter section, the screw plug is arranged in the large diameter section, and a bypass passage is further provided in the inner wall of the valve body, the bypass passage includes a transverse channel and a vertical channel, the transverse channel is connected to the inner cavity of the valve body, the upper end of the vertical channel is connected to the transverse channel, and the lower end is connected to the small diameter section; the valve body is provided with a valve port to accommodate the valve needle, the small diameter section is connected to the valve port, the valve port includes the first hole and the second hole, the second hole is located below the first hole, and the second hole includes a trapezoidal cross-section; the lower end of the second hole is connected to the retaining ring assembly, the retaining ring assembly includes an inner ring and a connecting rod, the inner ring is connected to the lower end of the second hole by the connecting rod, and the diameter of the inner ring is smaller than the diameter of the first hole;

[0040] The valve needle is connected to the connecting plate, the heightened plate is provided above the connecting plate, the inner side of the stopper is connected to the connecting plate, and the upper end of the stopper is connected to the heightened plate. When the valve needle is closed, the stopper closes the bypass passage.

[0041] As shown in the figure: the small diameter section is connected to the second hole. The small diameter section is connected to the lower end of the first hole. The number of the connecting rods is four. When the valve needle is open, the block does not close the bypass passage. The trapezoidal cross section is an isosceles trapezoidal cross section. The surrounding portion is threadedly connected to the vertical pipe. An opening is provided above the valve body, and an opening is provided below the shell. A slide rail and a slide plate are provided on the outer surface of the valve body, and the slide plate can slide circumferentially in the slide rail to close or expose the screw plug. The block includes a curved surface.

[0042] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention should be included in the patent scope of this case.

Claims

1. A fluid control device for air conditioning, characterized in that: It includes a shell, a coil assembly, a guide sleeve, a transverse tube, a rotor, a valve needle, a nut, a valve body, a first hole, a stopper, a vertical tube, a retaining ring assembly, a heightening plate, a connecting plate, a screw plug, a bypass passage, a stepped hole, and a second hole; wherein the shell is provided above the valve body, the coil assembly is provided outside the shell, and the rotor, valve needle, guide sleeve, and nut are provided inside the shell; The guide sleeve is arranged below the top wall of the housing, the upper end of the valve needle is accommodated in the guide sleeve, and the rotor can drive the valve needle to rotate; the nut is fixed above the bottom wall of the housing, the valve needle extends downward through the nut, the left side of the valve body is connected to the horizontal pipe, and the lower end of the valve body is provided with a surrounding portion, which is sleeved and connected to the upper end of the vertical pipe; The right side of the valve body is provided with the stepped hole, the stepped hole includes a large diameter section and a small diameter section, the screw plug is arranged in the large diameter section, and a bypass passage is further provided in the inner wall of the valve body, the bypass passage includes a transverse channel and a vertical channel, the transverse channel is connected to the inner cavity of the valve body, the upper end of the vertical channel is connected to the transverse channel, and the lower end is connected to the small diameter section; the valve body is provided with a valve port to accommodate the valve needle, the small diameter section is connected to the valve port, the valve port includes the first hole and the second hole, the second hole is located below the first hole, and the second hole includes a trapezoidal cross-section; the lower end of the second hole is connected to the retaining ring assembly, the retaining ring assembly includes an inner ring and a connecting rod, the inner ring is connected to the lower end of the second hole by the connecting rod, and the diameter of the inner ring is smaller than the diameter of the first hole; The valve needle is connected to the connecting plate, the heightened plate is provided above the connecting plate, the inner side of the stopper is connected to the connecting plate, and the upper end of the stopper is connected to the heightened plate. When the valve needle is closed, the stopper closes the bypass passage.

2. The fluid control device for air conditioning according to claim 1, characterized in that: The small-diameter section is connected to the second hole.

3. The fluid control device for air conditioning according to claim 1, characterized in that: The small-diameter section is connected to the lower end of the first hole.

4. The fluid control device for air conditioning according to claim 1, characterized in that: The number of the connecting rods is four.

5. The fluid control device for air conditioning according to claim 1, characterized in that: When the valve needle is in the open state, the stopper does not close the bypass passage.

6. The fluid control device for air conditioning according to claim 1, characterized in that: The trapezoidal cross section is an isosceles trapezoidal cross section.

7. The fluid control device for air conditioning according to claim 1, characterized in that: The surrounding portion is threadedly connected to the vertical pipe.

8. The fluid control device for air conditioning according to claim 1, characterized in that: An opening is provided above the valve body, and an opening is provided below the shell.

9. The fluid control device for air conditioning according to claim 1, characterized in that: A slide rail and a slide plate are provided on the outer surface of the valve body. The slide plate can slide along the circumferential direction in the slide rail to close or expose the screw plug.

10. The fluid control device for air conditioning according to claim 1, characterized in that: The stopper includes a curved surface.

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