Refrigerant double metering valve with shockproof effect

Abstract

The utility model relates to a kind of refrigerant double-metering valve with shockproof effect, belong to refrigerant double-metering valve technical field.The refrigerant double-metering valve with shockproof effect, comprising: valve body and the shockproof connector of three in number;The shockproof connector includes the threaded joint fixedly connected in valve body interface, the surface of the threaded joint is fixedly connected with positioning sleeve;Shockproof connector is extruded inside seal ring cover and outside seal ring cover by threaded seal cover, so that T-shaped air bag is compressed to generate rebound force, reversely promote two seal ring cover tightly against threaded seal cover;This mechanism uses the elastic potential energy of air bag to simultaneously enhance the friction resistance between threaded joint and threaded seal cover, effectively suppresses the risk of threaded loosening caused by compressor vibration;At the same time, the radial expansion of double seal ring cover fills the thread gap, forms physical sealing barrier, significantly reduces the probability of refrigerant leakage along threaded connection, improves system safety.

Description

Technical Field

[0001] This utility model relates to the field of refrigerant dual gauge valve technology, and in particular to a refrigerant dual gauge valve with shockproof effect. Background Technology

[0002] The refrigerant dual-gauge valve is a composite pressure measurement and control device. It connects to the high and low pressure process ports of the refrigeration system through two hoses, displays the compressor discharge pressure (high pressure) and suction pressure (low pressure) in real time, and controls refrigerant charging, vacuuming, and system pressure holding operations using the valve. It is a key tool in the maintenance and charging process of refrigeration systems.

[0003] Currently, in existing designs, the dual-gauge valve is connected to the pipeline using threaded joints. The vibrations from the compressor operation and the refrigerant delivery are directly transmitted to the joints, causing the threads to loosen and potentially leading to refrigerant leakage, posing a safety hazard. Utility Model Content

[0004] Therefore, it is necessary to provide a refrigerant dual-gauge valve with anti-vibration effect, addressing the problem that the threaded connection structure in the existing refrigerant dual-gauge valve is prone to loosening due to vibration and poses a safety hazard.

[0005] A refrigerant dual-gauge valve with shock-resistant properties includes: a valve body and three shock-resistant connectors.

[0006] In one embodiment, the anti-vibration joint includes a threaded joint fixedly connected to the valve body interface, a positioning sleeve fixedly connected to the surface of the threaded joint, and a communicating guide cavity fixedly connected to the bottom of both the threaded joint and the positioning sleeve. A sealing ring is slidably connected inside each of the two guide cavities, and an air bladder is provided between the two sealing rings. The air bladder is in an inflated state.

[0007] In one embodiment, the diameter of the inner sealing ring is greater than the inner diameter of the threaded joint and less than the inner diameter of the positioning sleeve, while the diameter of the outer sealing ring is greater than the diameter of the threaded joint and less than the diameter of the positioning sleeve.

[0008] In one embodiment, the vertical cross-sectional shape of the airbag is T-shaped.

[0009] In one embodiment, the airbag is filled with compressed gas, which is a nitrogen-based material component.

[0010] In one embodiment, an annular cavity is formed on the inner side of the inner sealing ring sleeve, and a flexible ring sleeve is embedded in the inner side of the annular cavity.

[0011] In one embodiment, the flexible ring is a fluororubber material component, and the ring cavity and the flexible ring are both cylindrical in shape.

[0012] In one embodiment, the inner side of the threaded joint is provided with a pressure-boosting port that communicates with the inner guide cavity, and the opening of the pressure-boosting port is always in communication with the flexible ring.

[0013] In one embodiment, the number of pressure inlets is not less than three, and the pressure inlets are distributed in a ring around the axis of the threaded joint.

[0014] Beneficial effects

[0015] The aforementioned refrigerant dual-gauge valve with anti-vibration effect uses a threaded sealing sleeve to compress the inner and outer sealing rings, causing the T-shaped airbag to rebound and push the two sealing rings tightly against the threaded sealing sleeve. This mechanism utilizes the elastic potential energy of the airbag to simultaneously enhance the frictional resistance between the threaded joint and the threaded sealing sleeve, effectively suppressing the risk of thread loosening caused by compressor vibration. At the same time, the radial expansion of the double sealing rings fills the thread gap, forming a physical sealing barrier, significantly reducing the probability of refrigerant leakage along the threaded connection and improving system safety.

[0016] When the refrigerant flows through the pressurization port of the threaded joint, the pressure is transmitted to the flexible ring through the annularly distributed pressurization ports, driving the flexible ring made of fluororubber to expand and squeeze the annular cavity. This pressure forces the inner sealing ring to expand further radially, dynamically filling the microscopic gap between it and the threaded sealing sleeve. Since the deformation of the flexible ring changes in real time with the refrigerant pressure, the sealing force can adapt to the system pressure fluctuations and be enhanced. Especially under high pressure conditions, it actively enhances the sealing effect, reducing the risk of seal failure and refrigerant leakage caused by pressure changes from the root. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the anti-vibration joint in this utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the anti-vibration joint in this utility model;

[0021] Figure 4 This is a partial exploded view of the anti-vibration joint in this utility model.

[0022] Figure label:

[0023] 100. Valve body; 200. Anti-vibration joint; 210. Threaded joint; 211. Pressure boosting port; 220. Positioning sleeve; 230. Guide cavity; 240. Sealing ring sleeve; 241. Ring cavity; 250. Airbag; 260. Flexible ring sleeve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0029] The following is combined Figures 1-4 This invention describes a refrigerant dual-gauge valve with shock-resistant properties.

[0030] In one embodiment, a refrigerant dual-gauge valve with shock-resistant properties includes: a valve body 100 and three shock-resistant connectors 200.

[0031] like Figure 2 , Figure 3 and Figure 4 As shown, the anti-vibration joint 200 includes a threaded joint 210 fixedly connected to the interface of the valve body 100. A positioning sleeve 220 is fixedly connected to the surface of the threaded joint 210. The bottoms of the threaded joint 210 and the positioning sleeve 220 are both fixedly connected to communicating guide cavities 230. A sealing ring sleeve 240 is slidably connected inside the two guide cavities 230. An air bladder 250 is disposed between the two sealing ring sleeves 240 and is in an inflated state. The diameter of the inner sealing ring sleeve 240 is larger than the inner diameter of the threaded joint 210 and smaller than the inner diameter of the positioning sleeve 220. The diameter of the outer sealing ring sleeve 240 is larger than the diameter of the threaded joint 210 and smaller than the diameter of the positioning sleeve 220. The vertical cross-sectional shape of the air bladder 250 is T-shaped. The air bladder 250 is filled with compressed gas, which is a nitrogen material component.

[0032] like Figure 2 , Figure 3 and Figure 4 As shown, the inner sealing ring 240 has an inner cavity 241, and a flexible ring 260 is embedded in the inner cavity 241. The flexible ring 260 is a fluororubber material component, and the shapes of the cavity 241 and the flexible ring 260 are both matching cylindrical shapes. The inner side of the threaded joint 210 has a pressure-boosting port 211 that communicates with the inner guide cavity 230. The opening of the pressure-boosting port 211 is always connected to the flexible ring 260. There are no fewer than three pressure-boosting ports 211, and the pressure-boosting ports 211 are distributed in a ring around the axis of the threaded joint 210.

[0033] In this embodiment, when refrigerant squeezes the flexible ring 260 through the pressurization port 211, the flexible ring 260 can squeeze the gap between the sealing ring cavity 241, the inner sealing ring 240 and the threaded sealing sleeve. As the pressure of the refrigerant increases or decreases, this can adaptively improve the sealing performance of the threaded structure and further reduce the probability of refrigerant leakage.

[0034] Additional notes: Valve body 100 mainly consists of the following structures:

[0035] I. Integrated valve body and control valve:

[0036] Central valve body: made of aluminum alloy or high-strength engineering plastic, with internal refrigerant passage and valve control chamber.

[0037] Low-pressure control valve: connects the low-pressure gauge to the low-pressure interface to control the flow of refrigerant on the low-pressure side.

[0038] High-pressure control valve: connects the high-pressure gauge to the high-pressure interface to control the flow of refrigerant on the high-pressure side.

[0039] Central service valve: Connects to the refrigerant tank / vacuum pump interface for charging, recovery, or vacuuming operations.

[0040] The tops of the three threaded connectors 210 are fixedly connected and communicate with the interfaces of the low-pressure control valve, the high-pressure control valve, and the central service valve, respectively.

[0041] II. Dual pressure gauge assembly:

[0042] High pressure gauge (red marking): measures the pressure on the high-pressure side of the refrigeration system (from the compressor outlet to the condenser), with a range typically of 0-800 psi (or higher).

[0043] Low pressure gauge (blue mark): measures the pressure on the low-pressure side (from the evaporator outlet to the compressor inlet), with a typical range of 0-250 psi (or vacuum to positive pressure).

[0044] Both gauges display real-time pressure via mechanical pointers, and the dials are marked with temperature-pressure scales corresponding to the refrigerant type (such as R134a, R410A).

[0045] III. Connecting hose kit (selectable according to actual needs):

[0046] The standard package includes three high-pressure resistant hoses (approximately 1.5 meters in length), with colors corresponding to the interfaces (blue / red / yellow), containing an explosion-proof fiber layer and refrigerant-compatible sealing material.

[0047] The hose has threaded sealing sleeves at both ends that match the threaded fitting 210, which automatically seal to prevent refrigerant leakage when disconnected.

[0048] The operation process of a refrigerant dual-gauge valve can be divided into the following steps, with each step working in concert with its corresponding structural function:

[0049] I. System Connection Phase:

[0050] High and low pressure interface connection: Connect the blue low pressure hose, red high pressure hose, and yellow hose to the corresponding threaded connectors 210 on the low pressure control valve, high pressure control valve, and central service valve respectively through the threaded sealing sleeve. Connect the blue low pressure hose to the low pressure maintenance valve (thick pipe) of the air conditioning system, the red high pressure hose to the high pressure valve (thin pipe), and the yellow hose to the refrigerant tank or recovery equipment.

[0051] Venting procedure: Briefly open the refrigerant tank valve to use refrigerant pressure to purge air from the hose and ensure that there is no residual gas in the pipeline.

[0052] II. Pressure Detection and Diagnosis:

[0053] Valve control: Keep the high and low pressure control valves open and the central service valve closed. Read the pressure values ​​of the two gauges in real time after starting the air conditioning system.

[0054] Normal range: 0.15-0.25MPa on the low-pressure side and 1.37-1.57MPa on the high-pressure side of the R134a system; abnormal pressure can indicate leakage or blockage.

[0055] III. Refrigerant charging process:

[0056] Low-pressure side charging: Open the central service valve and low-pressure valve. Refrigerant is drawn into the system from the tank through the low-pressure interface. At the same time, monitor the low-pressure gauge pressure to 25-35 psi, which needs to be adjusted according to the vehicle model.

[0057] Dynamic balance: The vehicle's air conditioning needs to be turned on and set to the maximum cooling mode to ensure that the refrigerant is evenly distributed.

[0058] IV. Recovery or vacuuming operation:

[0059] Refrigerant recovery: Connect the recovery equipment to the central interface, close the low-pressure valve and open the high-pressure valve to introduce the refrigerant into the recovery tank.

[0060] Vacuuming: Replace the refrigerant tank with a vacuum pump and open both valves to evacuate until the pressure gauge shows a negative pressure (above -30 inHg).

[0061] V. Safe Disassembly:

[0062] After completing the operation, close the valves in sequence, first the high pressure and then the low pressure, and finally disconnect the hose and seal the interface with a sealing cap.

[0063] The working principle of the anti-vibration joint 200 is as follows: During the connection between the threaded sealing sleeve and the threaded joint 210, the inner bottom wall and top of the threaded sealing sleeve simultaneously contact the inner sealing ring 240 and the outer sealing ring 240, and simultaneously compress the two sealing rings 240 during the subsequent connection process. The two sealing rings 240 cooperate with the compression airbag 250, which enables the airbag 250 to generate a rebound force and simultaneously push the two sealing rings 240 outward, causing the sealing rings 240 to push against the threaded sealing sleeve. This not only increases the thread friction between the threaded sealing sleeve and the threaded joint 210, effectively reducing the possibility of the threaded structure loosening under vibration, but also improves the overall sealing performance of the threaded structure through double sealing, effectively improving the overall sealing performance of the refrigerant dual gauge valve, thereby reducing the probability of refrigerant leakage.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A refrigerant dual-gauge valve with shock-resistant properties, characterized in that, include: Valve body (100); The vibration damping connector (200) consists of three parts, each including a threaded connector (210) fixedly connected to the interface of the valve body (100). A positioning sleeve (220) is fixedly connected to the surface of the threaded connector (210). Both the threaded connector (210) and the positioning sleeve (220) are fixedly connected to the bottom of a communicating guide cavity (230). A sealing ring sleeve (240) is slidably connected inside each of the two guide cavities (230). An air bladder (250) is provided between the two sealing ring sleeves (240) and the air bladder (250) is in an inflated state.

2. The refrigerant dual-gauge valve with anti-vibration effect according to claim 1, characterized in that, The diameter of the inner sealing ring (240) is greater than the inner diameter of the threaded joint (210) and less than the inner diameter of the positioning sleeve (220), while the diameter of the outer sealing ring (240) is greater than the diameter of the threaded joint (210) and less than the diameter of the positioning sleeve (220).

3. The refrigerant dual-gauge valve with anti-vibration effect according to claim 1, characterized in that, The vertical cross-sectional shape of the airbag (250) is T-shaped.

4. The refrigerant dual-gauge valve with anti-vibration effect according to claim 1, characterized in that, The airbag (250) is filled with compressed gas, which is a nitrogen material component.

5. The refrigerant dual-gauge valve with anti-vibration effect according to claim 1, characterized in that, The inner side of the inner sealing ring (240) is provided with an annular cavity (241), and a flexible ring (260) is embedded in the inner side of the annular cavity (241).

6. The refrigerant dual-gauge valve with anti-vibration effect according to claim 5, characterized in that, The flexible ring (260) is a fluororubber material component, and the ring cavity (241) and the flexible ring (260) are both cylindrical in shape.

7. The refrigerant dual-gauge valve with anti-vibration effect according to claim 5, characterized in that, The inner side of the threaded connector (210) is provided with a pressure port (211) that communicates with the inner guide cavity (230). The opening of the pressure port (211) is always connected to the flexible ring (260).

8. The refrigerant dual-gauge valve with anti-vibration effect according to claim 7, characterized in that, The number of pressure boosting ports (211) is not less than three, and the pressure boosting ports (211) are distributed in a ring around the axis of the threaded joint (210).

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