A shut-off valve for air conditioning

Abstract

This invention belongs to the field of shut-off valves, specifically relating to a shut-off valve for air conditioning, comprising a shut-off valve body, a positioning component, a refrigerant charging component, and a sealing component. The positioning component is mounted on the shut-off valve body, the refrigerant charging component is mounted on the positioning component, and the sealing component is mounted on the shut-off valve body. The sealing component improves the reliability of the connection and also prevents refrigerant leakage. The indoor and outdoor units are connected through the sealing component. During refrigerant charging, the refrigerant charging component is engaged with the shut-off valve body. The refrigerant charging component enables the functions of charging refrigerant and reading system pressure, and effectively prevents valve damage.

Description

Technical Field

[0001] This invention belongs to the field of shut-off valves, and specifically relates to a shut-off valve for air conditioning. Background Technology

[0002] Most air conditioners currently on the market use welded shut-off valves and pipes at one end, while the pipes connected to the indoor unit use a conical seal. A seal is achieved by tightening the pipe nut. This mechanical seal structure has high installation requirements, and leaks in the pipe nut are a frequent problem after-sales.

[0003] Furthermore, refrigerant charging points are typically tightened with nuts, which can cause refrigerant to leak out during maintenance when connecting the charging nozzle, posing a safety hazard to equipment and personnel. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a shut-off valve for air conditioning, which enhances the overall sealing performance, effectively prevents leakage of the connecting nut, and prevents refrigerant from spraying out during the connection process, thus avoiding safety hazards to equipment and personnel.

[0005] This invention provides a shut-off valve for air conditioning, comprising a shut-off valve body, a positioning assembly, a refrigerant charging assembly, and a sealing assembly;

[0006] The positioning component is mounted on the shut-off valve body, the refrigerant charging component is mounted on the positioning component, and the sealing component is mounted on the shut-off valve body;

[0007] The positioning component is used to facilitate clamping the refrigerant charging component;

[0008] The fluorine charging assembly is used to facilitate the charging of fluorine to an external fluorine system;

[0009] The sealing assembly is used to prevent refrigerant leakage.

[0010] The present invention provides an air conditioner shut-off valve that improves the reliability of the connection through a sealing component, while also preventing refrigerant leakage. The indoor unit and the outdoor unit are connected through the sealing component. During refrigerant charging, the refrigerant charging component is inserted into the shut-off valve body. The refrigerant charging component enables the functions of charging refrigerant and reading system pressure, and can effectively prevent valve damage.

[0011] As a preferred embodiment of the present invention, the shut-off valve body is provided with a blocking channel, a refrigerant inlet channel, a liquid inlet channel and a connecting channel;

[0012] The fluoride inlet channel and the liquid inlet channel are symmetrically arranged on both sides of the blocking channel with respect to the central axis of the blocking channel;

[0013] The connecting channel is located on one side of the blocking channel;

[0014] The blocking channel, fluoride inlet channel, liquid inlet channel, and connecting channel are all interconnected.

[0015] As a preferred embodiment of the present invention, the positioning component includes a connecting part and a positioning ring;

[0016] The connecting part is fixedly installed on the top of the shut-off valve body;

[0017] The positioning ring is mounted on the connecting part and is located in the middle of the connecting part;

[0018] The refrigerant inlet channel is located on the connecting part.

[0019] As a preferred embodiment of the present invention, the refrigerant charging assembly includes a valve core and a refrigerant charging component;

[0020] The valve core is mounted on the connecting part and is located inside the refrigerant inlet channel;

[0021] The refrigerant charging component is sleeved on the connecting part and located around the valve core;

[0022] The refrigerant charging component includes a refrigerant charging connector, a protrusion, and a locking component;

[0023] The refrigerant charging connector is sleeved on the connecting part and located around the valve core; the protrusion is installed on the refrigerant charging connector and is located above the refrigerant charging connector.

[0024] The locking component is engaged between the protrusion and the connecting portion.

[0025] As a preferred embodiment of the present invention, the locking component abuts against the periphery of the positioning ring, and the refrigerant charging connector is provided with a groove adapted to the locking component.

[0026] As a preferred embodiment of the present invention, the sealing assembly includes a connecting pipe component, a connector, and a plurality of sealing rings;

[0027] The connecting pipe component is threaded to the bottom of the shut-off valve body and is used to fix the connector to the bottom of the shut-off valve body;

[0028] The connector is provided with a limiting element, and the connector is locked between the connecting pipe component and the shut-off valve body by the limiting element. The limiting element is used to contact the shut-off valve body for limiting.

[0029] A plurality of the sealing rings are fitted onto the connector, and the connector has annular grooves adapted to the sealing rings, the number of the annular grooves being the same as the number of the sealing rings;

[0030] The sealing ring is fitted onto the annular groove, and a portion of the annular groove protrudes outside the annular groove;

[0031] The connecting pipe component is interference-fitted to the liquid inlet channel via the sealing ring.

[0032] In a preferred embodiment of the present invention, the connector portion is located within the liquid inlet channel.

[0033] As a preferred embodiment of the present invention, it also includes a valve core;

[0034] The valve core is threadedly connected within the blocking channel;

[0035] The valve core includes a closed state and an open / closed state;

[0036] When the valve core is in the closed state, the valve core thread moves between the refrigerant inlet channel and the liquid inlet channel;

[0037] When the valve core is in the open / closed state, the valve core thread moves to one side of the refrigerant inlet channel and the liquid inlet channel.

[0038] As a preferred embodiment of the present invention, a cover is threadedly connected to the body of the shut-off valve, and the cover is located on one side of the blocking channel.

[0039] As a preferred embodiment of the present invention, the radius of the positioning ring is 0.4-0.6 mm.

[0040] The air conditioning shut-off valve provided by the above technical solution has the following beneficial effects:

[0041] 1. During the connection process, install a sealing ring on the connector and limit its position using an annular groove. Insert the connector into the inlet channel. The limiting element on the connector contacts the shut-off valve body for limiting. The connector is then fixed to the bottom of the shut-off valve body by the connector assembly to prevent loosening. The width of the limiting element is greater than the width of the inlet channel, but less than the width of the connector assembly to prevent interference. The connector assembly is press-fitted to the inlet channel using a sealing ring to achieve a seal and prevent refrigerant leakage from the connector. The diameter of the sealing ring on the connector is greater than the diameter of the inlet channel to ensure the sealing performance between the sealing ring and the inner wall of the connector.

[0042] 2. Several sealing rings improve the sealing performance of the connection. The indoor and outdoor units are connected through a connector. When charging refrigerant, the external refrigerant charging equipment is clamped onto the refrigerant charging connector. The positioning ring limits and clamps the clamping component, thereby installing the refrigerant charging connector on the shut-off valve body. During charging, the valve core is opened by the protrusion on the inner side of the refrigerant charging connector, thus achieving the functions of charging refrigerant and reading system pressure. The height of the protrusion is slightly lower than the stroke of the valve core, which can effectively ensure that the valve core is opened without damaging the valve. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0044] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0045] Figure 2 for Figure 1 Enlarged view of point A;

[0046] Figure 3 This is a schematic diagram showing the connection between the nozzle and the nozzle component of the present invention;

[0047] Figure 4 This is a schematic diagram showing the connection between the connecting part and the positioning ring of the present invention.

[0048] In the diagram: 1. Shut-off valve body; 101. Blocking channel; 102. Refrigerant inlet channel; 103. Liquid inlet channel; 104. Connecting channel; 2. Connecting part; 3. Positioning ring; 4. Valve core; 5. Refrigerant charging component; 501. Refrigerant connector; 502. Protrusion; 503. Locking component; 6. Connecting pipe component; 7. Connector; 701. Limiting component; 8. Sealing ring; 9. Valve core; 10. Cover. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0051] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0052] Please see Figure 1-4 As shown, one embodiment of the present invention provides a shut-off valve for air conditioning, including a shut-off valve body 1, a positioning assembly, a refrigerant charging assembly, and a sealing assembly;

[0053] The positioning component is mounted on the shut-off valve body 1, the refrigerant charging component is mounted on the positioning component, and the sealing component is mounted on the shut-off valve body 1;

[0054] The positioning component is used to facilitate clamping the refrigerant charging component;

[0055] The fluorine charging assembly is used to facilitate the charging of fluorine to an external fluorine system;

[0056] The sealing assembly is used to prevent refrigerant leakage.

[0057] Specifically, the sealing component improves the reliability of the connection and also prevents refrigerant leakage. The indoor and outdoor units are connected through the sealing component. When charging refrigerant, the refrigerant charging component is inserted into the shut-off valve body 1. The refrigerant charging component enables the functions of charging refrigerant and reading system pressure, and can effectively prevent valve damage.

[0058] It should be noted that the aforementioned sealing components not only provide a sealing effect but also allow for communication between the indoor and outdoor units.

[0059] The aforementioned positioning component serves to position the refrigerant charging component during installation, and also secures the refrigerant charging component to the positioning component, facilitating connection between the refrigerant charging component and external refrigerant charging equipment.

[0060] In one embodiment, the shut-off valve body 1 is provided with a blocking channel 101, a refrigerant inlet channel 102, a liquid inlet channel 103 and a connecting channel 104.

[0061] The fluoride inlet channel 102 and the liquid inlet channel 103 are symmetrically arranged on both sides of the blocking channel 101 with respect to the central axis of the blocking channel 101.

[0062] The connecting channel 104 is located on one side of the blocking channel 101;

[0063] The blocking channel 101, the fluoride inlet channel 102, the liquid inlet channel 103, and the connecting channel 104 are all interconnected.

[0064] Specifically, the blocking channel 101 is used to facilitate the opening and closing of the valve by an external blocking component inside, the refrigerant inlet channel 102 is used to introduce external refrigerant gas, and the liquid inlet channel 103 is used to transport refrigerant.

[0065] It should be noted that the external blocking member can block the connecting channel 104. The external blocking member is connected to the blocking channel 101 by a thread and thus moves. When the blocking member moves to the connecting channel 104, it will block the connecting channel 104. The central axis of the connecting channel 104 and the blocking channel 101 coincide.

[0066] In one embodiment, the positioning component includes a connecting portion 2 and a positioning ring 3;

[0067] The connecting part 2 is fixedly disposed on the top of the shut-off valve body 1;

[0068] The positioning ring 3 is installed on the connecting part 2 and is located in the middle of the connecting part 2;

[0069] The refrigerant inlet channel 102 is located on the connecting part 2.

[0070] Specifically, the connecting part 2 is used to connect the refrigerant charging assembly, and the refrigerant charging assembly is secured to the periphery of the connecting part 2 by the positioning ring 3.

[0071] It should be noted that the top of the connecting part 2 has an opening.

[0072] In one embodiment, the refrigerant charging assembly includes a valve core 4 and a refrigerant charging component 5;

[0073] The valve core 4 is mounted on the connecting part 2, and the valve core 4 is located inside the refrigerant inlet channel 102;

[0074] The refrigerant charging component 5 is sleeved on the connecting part 2 and located around the valve core 4;

[0075] The refrigerant charging component 5 includes a refrigerant charging connector 501, a protrusion 502, and a locking component 503;

[0076] The refrigerant charging connector 501 is sleeved on the connecting part 2 and located around the valve core 4. The protrusion 502 is installed on the refrigerant charging connector 501 and is located above the refrigerant charging connector 501.

[0077] The locking component 503 is engaged between the protrusion 502 and the connecting part 2.

[0078] Specifically, the valve core 4 is used to prevent refrigerant from leaking out when it is not filled. It is installed on the refrigerant charging connector 501 by an external refrigerant charging device. The external refrigerant charging device drives the protrusion 502 to squeeze the valve core 4, thereby inputting refrigerant into the refrigerant inlet channel 102 to complete the refrigerant charging. The locking component 503 locks the refrigerant charging connector 501 on the connecting part 2. The height of the protrusion 502 is slightly lower than the stroke of the valve core 4, which can effectively ensure that the valve core 4 is opened without damaging the valve. If the stroke of the valve core 4 is exceeded, the valve core 4 will be deformed by force and damaged. After refrigerant charging, the valve core 4 will push out the refrigerant charging connector.

[0079] It should be noted that the locking component 503 can be a ball, a locking block, or other locking component 503, preferably a ball with a rounded edge, so that the ball will not cause significant wear when disassembling the refrigerant charging connector 501.

[0080] In one embodiment, the locking component 503 abuts against the periphery of the positioning ring 3, and the refrigerant charging connector 501 is provided with a groove that matches the locking component 503.

[0081] Specifically, the locking component 503 is located inside the groove and abuts against the inner wall of the groove.

[0082] It should be noted that the two sides of the locking component 503 abut against the inner wall of the groove and the outer wall of the positioning ring 3 respectively. The locking component 503 is mainly limited by the positioning ring 3, so that the refrigerant charging connector 501 is well locked onto the connecting part 2.

[0083] In one embodiment, the sealing assembly includes a connecting pipe component 6, a connector 7, and a plurality of sealing rings 8;

[0084] The connecting pipe component 6 is threaded to the bottom of the shut-off valve body 1 and is used to fix the connector 7 to the bottom of the shut-off valve body 1.

[0085] The connector 7 is provided with a limiting element 701. The connector 7 is engaged between the pipe assembly 6 and the shut-off valve body 1 by the limiting element 701. The limiting element 701 is used to contact the shut-off valve body 1 for limiting.

[0086] A plurality of the sealing rings 8 are fitted onto the connector 7, and the connector 7 has annular grooves adapted to the sealing rings 8, the number of the annular grooves being the same as the number of the sealing rings 8;

[0087] The sealing ring 8 is fitted onto the annular groove, and a portion of the annular groove protrudes outside the annular groove;

[0088] The connecting pipe component 6 is interference-fitted to the liquid inlet channel 103 via the sealing ring 8.

[0089] Specifically, the connecting pipe component 6 is used to fix the connector 7 to the bottom of the shut-off valve body 1, and the sealing ring 8 is used to interference fit the connector 7 to the bottom of the shut-off valve body 1. The refrigerant is effectively prevented from leaking out of the connector 7 by the sealing rings 8.

[0090] It should be noted that when the sealing ring 8 is installed in the annular groove, part of it will protrude outside the annular groove. When the pipe is inserted into the liquid inlet channel 103, the sealing ring 8 will press against the inner wall of the liquid inlet channel 103, thereby better ensuring the overall sealing performance.

[0091] In one embodiment, the connector 7 is located within the liquid inlet channel 103.

[0092] Specifically, part of the connector 7 is located inside the liquid inlet channel 103, and the other part is locked outside the liquid inlet channel 103 by the limiting member 701. The connector 7 component passes through the connector 7 located outside the liquid inlet channel 103. When the connector 7 component is tightened at the bottom of the shut-off valve body 1, it will press against the limiting member 701, thereby better fixing the pipe.

[0093] In one embodiment, a valve core 9 is also included;

[0094] The valve core 9 is threadedly connected to the blocking channel 101;

[0095] The valve core 9 includes a closed state and an open / closed state;

[0096] When the valve core 9 is in the closed state, the valve core 9 moves threadedly between the refrigerant inlet channel 102 and the liquid inlet channel 103;

[0097] When the valve core 9 is in the open / closed state, the valve core 9 moves threadedly to one side of the refrigerant inlet channel 102 and the liquid inlet channel 103.

[0098] Specifically, the valve core 9 is threaded into the blocking channel 101, and thus moves within the blocking channel 101. When the valve core 9 moves between the refrigerant inlet channel 102 and the liquid inlet channel 103, it blocks the connecting channel 104. When the valve core 9 moves to one side of the refrigerant inlet channel 102 and the liquid inlet channel 103, the connecting channel 104 opens.

[0099] It should be noted that the valve core 9 is provided with a drive hole, which can be a hexagonal hole, a pentagonal hole or other shapes of hole. An external tool is inserted into the drive hole to drive the valve core 9 to rotate, thereby causing the valve core 9 to move within the blocking channel 101.

[0100] In one embodiment, a cover 10 is threadedly connected to the shut-off valve body 1, and the cover 10 is located on one side of the blocking channel 101.

[0101] Specifically, the cover 10 prevents liquid from flowing out of the blocking channel 101;

[0102] The radius of the positioning ring 3 is 0.4-0.6 mm.

[0103] It should be noted that when the valve core 9 rotates to block the connecting channel 104, a portion of the valve core 9 is still located within the blocking channel 101 to prevent liquid from entering the blocking channel 101. Furthermore, the valve core 9 is also provided with an annular groove, which can be used to place an O-ring.

[0104] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A shut-off valve for air conditioning, characterized in that, Includes the shut-off valve body, positioning assembly, refrigerant charging assembly, and sealing assembly; The positioning component is mounted on the shut-off valve body, the refrigerant charging component is mounted on the positioning component, and the sealing component is mounted on the shut-off valve body; The positioning component is used to conveniently clamp the refrigerant charging component. The positioning component includes a connecting part and a positioning ring. The connecting part is fixedly disposed on the top of the shut-off valve body. The positioning ring is installed on the connecting part and located in the middle of the connecting part. A refrigerant inlet channel is opened on the connecting part. The refrigerant charging assembly is used to facilitate the charging of refrigerant to an external refrigerant system. The refrigerant charging assembly includes a valve core and a refrigerant charging component. The valve core is installed on the connecting part and is located inside the refrigerant inlet channel. The refrigerant charging component is sleeved on the connecting part and located around the valve core. The refrigerant charging component includes a refrigerant charging connector, a protrusion, and a locking component. The refrigerant charging connector is sleeved on the connecting part and located around the valve core. The protrusion is installed on the refrigerant charging connector and is located above the refrigerant charging connector. The locking component is locked between the protrusion and the connecting part and abuts against the outer edge of the positioning ring. The sealing assembly is used to prevent refrigerant leakage; The refrigerant charging connector is provided with a groove that is compatible with the locking component; The sealing assembly includes a connecting pipe component, a connector, and several sealing rings; The connecting pipe component is threaded to the bottom of the shut-off valve body and is used to fix the connector to the bottom of the shut-off valve body; The connector is provided with a limiting element, and the connector is locked between the connecting pipe component and the shut-off valve body by the limiting element. The limiting element is used to contact the shut-off valve body for limiting. A plurality of the sealing rings are fitted onto the connector, and the connector has annular grooves adapted to the sealing rings, the number of the annular grooves being the same as the number of the sealing rings; The sealing ring is fitted onto the annular groove, and a portion of the annular groove protrudes outside the annular groove; The shut-off valve body is provided with a liquid inlet channel, and the connecting pipe component is interference-fitted to the liquid inlet channel through the sealing ring.

2. The shut-off valve for air conditioning as described in claim 1, characterized in that, The shut-off valve body is also provided with a blocking channel, a refrigerant inlet channel and a connection channel; The fluoride inlet channel and the liquid inlet channel are symmetrically arranged on both sides of the blocking channel with respect to the central axis of the blocking channel; The connecting channel is located on one side of the blocking channel; The blocking channel, fluoride inlet channel, liquid inlet channel, and connecting channel are all interconnected.

3. The shut-off valve for air conditioning as described in claim 1, characterized in that, The connector portion is located within the liquid inlet channel.

4. The shut-off valve for air conditioning as described in claim 2, characterized in that, It also includes the valve core; The valve core is threadedly connected within the blocking channel; The valve core includes a closed state and an open / closed state; When the valve core is in the closed state, the valve core thread moves between the refrigerant inlet channel and the liquid inlet channel; When the valve core is in the open / closed state, the valve core thread moves to one side of the refrigerant inlet channel and the liquid inlet channel.

5. A shut-off valve for air conditioning as described in claim 2, characterized in that, A cover is threadedly connected to the body of the shut-off valve, and the cover is located on one side of the blocking channel.

6. The shut-off valve for air conditioning as described in claim 1, characterized in that, The radius of the positioning ring is 0.4-0.6 mm.

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