Ball valve and air conditioning system

Abstract

The utility model relates to the technical field of ball valves, in particular to a ball valve and an air conditioning system. The ball valve comprises a valve body, a valve element, a first valve cover, a second valve cover and an exhaust part. The valve body is provided with a valve cavity, the first valve deck and the second valve deck are connected to the two opposite ends of the valve body respectively, the first valve deck is provided with a first opening, the second valve deck is provided with a second opening, and the first opening and the second opening are both communicated with the valve cavity. The valve element is rotatably installed in the valve cavity and used for controlling connection and disconnection of the first opening and the second opening. The exhaust part is arranged on the peripheral side of the valve body and connected with the valve body, and the exhaust part communicates with the valve cavity and is used for discharging the refrigerant in the valve cavity out of the valve body. According to the ball valve and the air conditioning system, the problem that when an existing ball valve is opened again, sounds are likely to be generated is solved.

Description

Technical Field

[0001] The present application relates to the technical field of ball valves, and particularly to a ball valve and an air conditioning system. Background Art

[0002] Ball valves are commonly used in air conditioning systems to conduct and cut off the flow of refrigerant. Among them, a ball valve usually includes a valve body and a valve core. The valve core is spherical and installed in the valve body. When the ball valve is working, through the rotation of the valve core, the channel on the valve core can communicate with the corresponding opening on the valve body to achieve conduction. When the valve core rotates until the internal channel is disconnected from the opening on the valve body, the ball valve closes.

[0003] In the related art, after the ball valve is closed, the channel in the valve core communicates with the valve cavity in the valve body. However, since the channel in the valve core often still remains with refrigerant, when this part of the refrigerant is affected by the high ambient temperature, the pressure in the valve cavity will increase, making the fit between the valve core and the structure in the valve body closer. Therefore, when the ball valve is opened again, under the action of pressure, the structure in the valve body is easily damaged and prone to produce a ringing sound due to friction. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a ball valve and an air conditioning system to solve the problem that the existing ball valve is prone to produce a ringing sound when reopened.

[0005] The present application provides a ball valve, which includes a valve body, a valve core, a first valve cover, a second valve cover, and an exhaust member. The valve body is provided with a valve cavity. The first valve cover and the second valve cover are respectively connected to opposite ends of the valve body. The first valve cover is provided with a first opening, and the second valve cover is provided with a second opening. Both the first opening and the second opening communicate with the valve cavity. The valve core is rotatably installed in the valve cavity for controlling the on-off of the first opening and the second opening. The exhaust member is arranged on the periphery of the valve body and connected to the valve body. Among them, the exhaust member communicates with the valve cavity for discharging the refrigerant in the valve cavity to the outside of the valve body.

[0006] In one embodiment, the exhaust member includes a mounting body and a core body. The mounting body is connected to the valve body, and an exhaust cavity is formed in the mounting body. Both ends of the exhaust cavity communicate with the outside and the valve cavity respectively. The core body is installed in the exhaust cavity for controlling the on-off of the exhaust cavity.

[0007] In one embodiment, the mounting body and the valve body are of a split structure, or the mounting body and the valve body are of an integrally formed structure.

[0008] In one embodiment, a channel and a balance hole are formed in the valve core. The channel penetrates through both ends of the valve core. The axial direction of the balance hole is arranged at an angle to the axial direction of the channel, and both ends of the balance hole communicate with the channel and the valve cavity respectively. Wherein, with the rotation of the valve core, the channel can communicate the first opening and the second opening.

[0009] In one embodiment, the valve body is further provided with an assembly hole communicating with the valve cavity. The ball valve further includes a valve rod. One end of the valve rod passes through the assembly hole and is connected to the valve core for driving the valve core to rotate.

[0010] In one embodiment, the ball valve further includes a sleeve. One end of the sleeve is inserted into the assembly hole and connected to the valve body. Moreover, the part of the valve rod sleeved by the sleeve is in sealed connection with the outer wall of the valve rod.

[0011] In one embodiment, a flange is formed on the periphery of the assembly hole. The flange sleeves part of the periphery of the sleeve and is connected to the sleeve.

[0012] In one embodiment, the ball valve further includes a first seal and a second seal. The first seal is arranged on the side of the valve core close to the first opening and is in sealed contact with the first valve cover and the valve core respectively. The second seal is arranged on the side of the valve core close to the second opening and is in sealed contact with the second valve cover and the valve core respectively.

[0013] In one embodiment, the valve body, the first valve cover and the second valve cover are all made of stainless steel.

[0014] This application also provides an air conditioning system, which includes the ball valve described in any one of the above embodiments.

[0015] Compared with the prior art, for the ball valve and the air conditioning system provided by this application, by arranging an exhaust part on the valve body, when the ball valve is reopened, the redundant refrigerant in the valve cavity can be discharged through the exhaust part first, so as to effectively reduce the pressure in the valve cavity, avoid the difficulty of the valve core rotation caused by excessive pressure, reduce the cost of reopening the valve, and at the same time, can also reduce the probability of damage to the internal structure of the valve body and the generation of ringing. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Schematic structural diagram of a ball valve according to an embodiment provided by the present application;

[0018] Figure 2 Cross-sectional view of the ball valve according to an embodiment provided by the present application when it is opened;

[0019] Figure 3 Cross-sectional view of the ball valve according to an embodiment provided by the present application in another direction when it is opened.

[0020] The meanings of the symbols in the figure are as follows:

[0021] 100, ball valve; 10, valve body; 101, valve cavity; 102, assembly hole; 11, flanging; 20, valve core; 201, channel; 202, balance hole; 30, first valve cover; 301, first opening; 40, second valve cover; 401, second opening; 50, exhaust part; 501, exhaust cavity; 51, mounting body; 52, core body; 60, valve stem; 601, sealing groove; 61, sealing ring; 70, sleeve; 71, end cover; 80, first seal; 90, second seal. Detailed implementation manners

[0022] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0023] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there may also 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 at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of the present application are only for the purpose of illustration and do not represent the only implementation manner.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0026] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.

[0027] Ball valves are commonly used in air conditioning systems to conduct and cut off the flow of refrigerant. Among them, a ball valve usually includes a valve body and a valve core. The valve core is spherical and installed in the valve body. When the ball valve is working, through the rotation of the valve core, the channel on the valve core can communicate with the corresponding opening on the valve body to achieve conduction. When the valve core rotates until the internal channel is disconnected from the opening on the valve body, the ball valve closes.

[0028] In the related art, after the ball valve is closed, the channel in the valve core is in communication with the valve cavity in the valve body. However, since there is often still refrigerant remaining in the channel in the valve core, when this part of the refrigerant is affected by the high ambient temperature, the pressure in the valve cavity will increase, making the fit between the valve core and the structure in the valve body closer. Therefore, when the ball valve is opened again, under the action of pressure, the structure in the valve body is easily damaged and prone to make a rattling sound due to friction.

[0029] Please refer to Figures 1 - 3, To solve the problem that the existing ball valve is prone to produce a ringing sound when it is reopened, the present application provides a ball valve 100, which includes a valve body 10, a valve core 20, a first valve cover 30, a second valve cover 40, and an exhaust member 50. The valve body 10 is provided with a valve cavity 101. The first valve cover 30 and the second valve cover 40 are respectively connected to opposite ends of the valve body 10. Moreover, the first valve cover 30 is provided with a first opening 301, and the second valve cover 40 is provided with a second opening 401. Both the first opening 301 and the second opening 401 communicate with the valve cavity 101. The valve core 20 is spherical and is rotatably installed in the valve cavity 101 for controlling the on-off of the first opening 301 and the second opening 401. The exhaust member 50 is disposed on the circumferential side of the valve body 10 and is connected to the valve body 10. Among them, the exhaust member 50 communicates with the valve cavity 101 and is used to discharge the refrigerant in the valve cavity 101 to the outside of the valve body 10.

[0030] It can be understood that by providing the exhaust member 50 on the valve body 10 in the present application, when the ball valve 100 is reopened, the excess refrigerant in the valve cavity 101 can be discharged through the exhaust member 50 first, thereby effectively reducing the pressure in the valve cavity 101, avoiding difficult rotation of the valve core 20 due to excessive pressure, reducing the cost of reopening the valve, and at the same time, reducing the probability of damage to the internal structure of the valve body 10 and the generation of ringing sounds.

[0031] It should be noted that when the ball valve 100 of the present application is closed, the side wall of the valve core 20 blocks the first opening 301 and the second opening 401, which makes the valve cavity 101 in a truncated state with respect to the first opening 301 and the second opening 401 located on opposite sides of the valve core 20.

[0032] Specifically, a channel 201 is provided on the valve core 20, and the channel 201 penetrates through both ends of the valve core 20. Among them, as the valve core 20 rotates, the channel 201 can communicate the first opening 301 and the second opening 401. In this way, the smooth flow of the refrigerant when the ball valve 100 is opened is realized.

[0033] To ensure the sealing performance between the valve core 20 and the first opening 301 and the second opening 401 when the ball valve 100 is closed, in an embodiment, as Figure 2 and Figure 3 shown, the ball valve 100 further includes a first sealing member 80 and a second sealing member 90. The first sealing member 80 is disposed on the side of the valve core 20 close to the first opening 301 and is in sealing contact with the first valve cover 30 and the valve core 20 respectively. The second sealing member 90 is disposed on the side of the valve core 20 close to the second opening 401 and is in sealing contact with the second valve cover 40 and the valve core 20 respectively.

[0034] When the ball valve 100 is closed and the pressure difference at the first opening 301 and the second opening 401 is small, the valve core 20 can be in contact with both the first seal 80 and the second seal 90. That is, both the first seal 80 and the second seal 90 can achieve a sealing effect to prevent refrigerant leakage. Among them, due to the arrangement of the exhaust member 50, the pressure exerted on the valve core 20 by the residual refrigerant in the valve cavity 101 is reduced. Therefore, the valve core 20 will not be biased towards the first seal 80 or the second seal 90 under the action of pressure, avoiding excessive extrusion, which can reduce the degree of wear of the first seal 80 and the second seal 90 and effectively improve the service life of the first seal 80 and the second seal 90.

[0035] Specifically, both the first seal 80 and the second seal 90 are set as annular gaskets, and the first seal 80 and the second seal 90 are provided with hole structures for refrigerant flow.

[0036] In one embodiment, as Figure 3 shown, the exhaust member 50 includes a mounting body 51 and a core body 52. The mounting body 51 is connected to the valve body 10, and an exhaust cavity 501 is formed in the mounting body 51. Both ends of the exhaust cavity 501 communicate with the outside and the valve cavity 101 respectively. The core body 52 is installed in the exhaust cavity 501 to control the on-off of the exhaust cavity 501. In this way, the discharge of the residual refrigerant in the valve cavity 101 can be controlled by the core body 52, and the sealing performance of the ball valve 100 during normal operation can be ensured.

[0037] Furthermore, in one embodiment, as Figure 3 shown, the mounting body 51 and the valve body 10 are of a split structure. In this way, the processing difficulty of the valve body 10 and the mounting body 51 can be reduced, thereby reducing costs.

[0038] Specifically, the mounting body 51 and the valve body 10 can be fixedly connected by welding or other means.

[0039] In another embodiment, the mounting body 51 and the valve body 10 are of an integrally formed structure to avoid poor welding that is likely to occur during welding connection, thereby reducing the probability of leakage of the valve body 10.

[0040] In one embodiment, the valve body 10, the first valve cover 30 and the second valve cover 40 are all made of stainless steel. Stainless steel has a low cost, good corrosion resistance, and is easy to weld, which can reduce the overall cost of the ball valve 100.

[0041] In one embodiment, as Figure 2 and Figure 3As shown, a balance hole 202 is provided on the valve core 20. The axial direction of the balance hole 202 is arranged at an angle with the axial direction of the channel 201, and both ends of the balance hole 202 communicate with the channel 201 and the valve cavity 101 respectively. The balance hole 202 can balance the pressure difference inside and outside the valve core 20 to ensure the reliability of the position of the valve core 20 and reduce the adjustment difficulty of the valve core 20.

[0042] Among them, the balance hole 202 is preferably arranged perpendicular to the axial direction of the channel 201.

[0043] To realize the rotation of the valve core 20, in one embodiment, as Figure 2 and Figure 3 shown, the valve body 10 is further provided with an assembly hole 102 communicating with the valve cavity 101. The ball valve 100 further includes a valve rod 60. One end of the valve rod 60 passes through the assembly hole 102 and is connected to the valve core 20 for driving the valve core 20 to rotate. In this way, it is easy to control the flow or cut-off of the refrigerant.

[0044] Furthermore, in one embodiment, the ball valve 100 further includes a sleeve 70. One end of the sleeve 70 is inserted into the assembly hole 102 and connected to the valve body 10. And the sleeve 70 sleeves on a part of the outer periphery of the valve rod 60 and is hermetically connected to the outer wall of the valve rod 60.

[0045] In this way, the installation stability of the valve rod 60 can be improved, and at the same time, the probability of refrigerant leakage can be reduced.

[0046] Specifically, a sealing groove 601 is formed by the outer periphery of the valve rod 60 recessing towards the direction close to its own axis. A sealing ring 61 is installed in the sealing groove 601 to realize the sealing connection between the outer wall of the valve rod 60 and the inner wall of the sleeve 70 through the sealing ring 61.

[0047] In one embodiment, as Figure 2 and Figure 3 shown, a flange 11 is formed on the circumferential side of the assembly hole 102. The flange 11 sleeves on a part of the outer periphery of the sleeve 70 and is connected to the sleeve 70. By providing the flange 11, the contact area between the sleeve 70 and the valve body 10 can be increased, thereby greatly improving the connection strength between the sleeve 70 and the valve body 10 and ensuring the installation stability of the sleeve 70 and the valve rod 60.

[0048] Furthermore, in one embodiment, the ball valve 100 further includes an end cap 71. The end cap 71 is threadedly connected to one end of the sleeve 70 away from the valve body 10, which is convenient for disassembly and assembly, and can play a protective role for the valve rod 60 inside the sleeve 70.

[0049] This application also provides an air conditioning system, which includes the ball valve 100 described in any one of the above embodiments.

[0050] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope described in this specification.

[0051] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A ball valve, characterized in that, It includes a valve body (10), a valve core (20), a first valve cover (30), a second valve cover (40), and an exhaust component (50). The valve body (10) is provided with a valve cavity (101). The first valve cover (30) and the second valve cover (40) are respectively connected to opposite ends of the valve body (10). The first valve cover (30) is provided with a first opening (301), and the second valve cover (40) is provided with a second opening (401). Both the first opening (301) and the second opening (401) communicate with the valve cavity (101). The valve core (20) is rotatably installed in the valve cavity (101) for controlling the on-off of the first opening (301) and the second opening (401). The exhaust component (50) is arranged on the peripheral side of the valve body (10) and connected to the valve body (10). Among them, the exhaust component (50) communicates with the valve cavity (101) for discharging the refrigerant in the valve cavity (101) to the outside of the valve body (10).

2. The ball valve according to claim 1, characterized in that, The exhaust component (50) includes a mounting body (51) and a core body (52). The mounting body (51) is connected to the valve body (10), and an exhaust cavity (501) is formed in the mounting body (51). Both ends of the exhaust cavity (501) communicate with the outside and the valve cavity (101) respectively. The core body (52) is installed in the exhaust cavity (501) for controlling the on-off of the exhaust cavity (501).

3. The ball valve according to claim 2, characterized in that, The mounting body (51) and the valve body (10) are of a split structure, or the mounting body (51) and the valve body (10) are of an integrally formed structure.

4. The ball valve according to claim 1, wherein A channel (201) and a balance hole (202) are formed on the valve core (20). The channel (201) penetrates through both ends of the valve core (20). The axial direction of the balance hole (202) is set at an angle with the axial direction of the channel (201), and both ends of the balance hole (202) communicate with the channel (201) and the valve cavity (101) respectively. Among them, as the valve core (20) rotates, the channel (201) can communicate the first opening (301) and the second opening (401).

5. The ball valve according to claim 1, wherein The valve body (10) is further provided with an assembly hole (102) communicating with the valve cavity (101). The ball valve further includes a valve rod (60). One end of the valve rod (60) passes through the assembly hole (102) and is connected to the valve core (20) for driving the valve core (20) to rotate.

6. The ball valve according to claim 5, wherein, The ball valve further includes a sleeve (70). One end of the sleeve (70) is inserted into the assembly hole (102) and connected to the valve body (10). Moreover, the sleeve (70) sleeves a part of the outer periphery of the valve rod (60) and is hermetically connected to the outer wall of the valve rod (60).

7. The ball valve according to claim 6, wherein, A flanging (11) is formed on the peripheral side of the assembly hole (102). The flanging (11) sleeves a part of the outer periphery of the sleeve (70) and is connected to the sleeve (70).

8. The ball valve according to claim 1, wherein, The ball valve further includes a first seal (80) and a second seal (90). The first seal (80) is disposed on a side of the valve core (20) close to the first opening (301), and is in sealing contact with the first valve cover (30) and the valve core (20) respectively. The second seal (90) is disposed on a side of the valve core (20) close to the second opening (401), and is in sealing contact with the second valve cover (40) and the valve core (20) respectively.

9. The ball valve according to claim 1, characterized in that, The valve body (10), the first valve cover (30) and the second valve cover (40) are all made of stainless steel.

10. An air conditioning system, characterized in that, A ball valve includes any one of the ball valves according to claims 1-9.

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