Throttle stop valve and air conditioning system having the same

Abstract

The present invention discloses a throttling stop valve and an air conditioning system having the same, wherein the throttling stop valve comprises a valve body having a valve cavity and a valve stem arranged in the valve cavity, wherein the valve body also comprises a vertical interface and a horizontal interface communicating with the valve cavity, wherein the vertical interface communicates with the valve cavity through a valve mouth; the valve mouth comprises a throttling hole section; and further comprises a valve core having a throttling flow hole, wherein the valve core is located between the valve mouth and the valve stem, and can move downward along the valve cavity to abut against the valve mouth, or move upward along the valve cavity to detach from the valve mouth; an elastic component abuts between the valve core and the valve mouth, and further comprises a limiting structure for limiting the position of the elastic component. The structural design of the throttling stop valve can support and position the valve core, thereby reducing the probability of the valve core being offset, and at the same time avoiding vibration of the valve core during its up and down movement, with low noise.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration systems, and in particular to a throttling stop valve and an air conditioning system having the same. Background Art

[0002] In the air conditioning system, the stop valve is mainly used to connect the indoor unit and the outdoor unit, and it only has a stop function.

[0003] Throttling components are also required in the air-conditioning system to realize the throttling function. At present, the throttling filtering devices commonly used in the air-conditioning system are main capillaries, auxiliary capillaries, filters and one-way valves.

[0004] The stop valve and throttling filter device are relatively independent components in the air-conditioning system pipeline, and are mainly connected to the pipeline by welding. Because there are many parts and correspondingly many welding points, leakage is prone to occur and a large space is occupied.

[0005] In order to solve the above problems, the applicant proposed a solution of adding a valve core with a throttling hole in the valve cavity of the stop valve, and setting the valve mouth as a throttling structure. Under the pressure of the inflowing fluid, the valve core can move up and down between the valve mouth and the valve stem of the stop valve, so as to realize the effect of two-way throttling through its throttling hole and the throttling structure of the valve mouth. The principle of realizing the stop function is similar to that of the conventional stop valve, and is realized by the valve stem pressing against the valve core and blocking its throttling hole.

[0006] However, in actual application, it is found that the throttling stop valve has the problem that the valve core is easily offset and the noise is loud. Summary of the invention

[0007] The purpose of the present invention is to provide a throttling stop valve, the structural design of which can support and position the valve core, reduce the probability of valve core deviation, and also avoid vibration of the valve core during the up and down movement, with low noise.

[0008] In order to solve the above technical problems, the present invention provides a throttling stop valve, comprising a valve body having a valve cavity and a valve stem arranged in the valve cavity, the valve body further comprising a vertical interface and a horizontal interface communicating with the valve cavity, the vertical interface communicating with the valve cavity through a valve port; the valve port comprising a throttling hole section;

[0009] It also includes a valve core with a throttling hole, which is located between the valve mouth and the valve stem and can move downward along the valve cavity to abut against the valve mouth, or move upward along the valve cavity to separate from the valve mouth; an elastic component abuts between the valve core and the valve mouth, and also includes a limiting structure for limiting the position of the elastic component.

[0010] The throttling stop valve provided by the present invention is provided with an elastic component between the valve core and the valve mouth, and has a limiting structure for limiting the position of the elastic component, so that the valve core is supported by the elastic component, and when the fluid flows in from the horizontal interface, the valve core moves downward under the action of the fluid pressure, compressing the elastic component. Due to the support of the elastic component, the valve core moves relatively smoothly, and since the position of the elastic component is limited by the limiting structure, the valve core is not easy to deviate during the movement. When the fluid flows in from the vertical interface, the valve core moves upward under the action of the fluid pressure, the elastic component resets and bounces up. Similarly, under the support and limiting of the elastic component, the movement of the valve core is smooth and not easy to deviate. That is to say, in the process of two-way flow of the fluid, the valve core can move smoothly, and is supported and limited by the elastic component, so no vibration occurs, thereby reducing the noise during the operation of the throttling stop valve.

[0011] An upward step surface is formed at the connection between the valve mouth and the valve cavity, the valve core has a downward step surface, the upper end of the elastic component abuts against the step surface, and the lower end of the elastic component abuts against the step surface; the step surface and the step surface form the limiting structure.

[0012] The valve core comprises a valve core body and a first boss extending axially along the lower end of the valve core body, the lower end surface of the valve core body forms the stepped surface, and the first boss is inserted into the elastic component.

[0013] The peripheral wall of the valve core body is provided with more than two radially extending protrusions, and the radial dimension from the center of the valve core body to the protrusions is adapted to the radius of the valve cavity; a flow channel is formed between the outer peripheral wall of the valve core body and the inner wall of the valve cavity.

[0014] The outer diameter of the valve core body is matched with the inner diameter of the valve cavity, and the periphery of the valve core body is provided with a through groove communicating with the upper and lower parts of the valve core body.

[0015] The valve core also includes a second boss extending axially along the upper end of the valve core body.

[0016] When the valve core abuts against the valve port, the throttling hole section is communicated with the throttling flow hole;

[0017] When the valve core is separated from the valve opening, the horizontal interface is communicated with the vertical interface through a flow channel formed between the valve opening, the valve core and the inner wall of the valve cavity;

[0018] The valve stem can move downward along the valve cavity to press the valve core against the valve port and block the throttling hole, or move upward along the valve cavity to form a space for the valve core to move axially.

[0019] The valve mouth portion further comprises a tapered hole section located above the throttling hole section. When the valve core abuts against the valve mouth portion, a lower end of the valve core forms a line seal with a tapered inner wall of the tapered hole section.

[0020] A filtering component is arranged in the horizontal interface and / or the vertical interface.

[0021] The present invention also provides an air conditioning system, comprising an indoor switch and an outdoor switch, wherein the throttling stop valve described in any one of the above items is provided on a pipeline connecting the indoor switch and the outdoor switch.

[0022] Since the above-mentioned throttling stop valve has the above-mentioned technical effects, the air-conditioning system having the throttling stop valve also has corresponding technical effects, which will not be discussed again here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 and Figure 2 FIG. 1 shows a cross-sectional schematic diagram of a throttling stop valve in a specific embodiment, wherein: Figure 1 It is the working state when the fluid flows in from the horizontal interface. Figure 2 It is the working state when the fluid flows in from the vertical interface;

[0024] Figure 3 It is a cross-sectional schematic diagram of a valve body of a throttling stop valve in a specific embodiment;

[0025] Figure 4 It is a structural schematic diagram of a valve core of a throttling stop valve in a specific embodiment;

[0026] Figure 5 for Figure 4 Front view of valve core shown.

[0027] in, Figures 1 to 5 The one-to-one correspondence between the component names and the reference numerals is as follows:

[0028] Valve body 10, valve mouth 11, throttling hole section 111, tapered hole section 112, valve cavity 12, horizontal interface 13, vertical interface 14, step surface 15;

[0029] Valve stem 20;

[0030] The valve core 30, the throttling hole 30a, the valve core body 31, the convex part 311, the first boss 32, and the second boss 33;

[0031] Spring 40 , filter component 50 . DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 FIG. 1 shows a cross-sectional schematic diagram of a throttling stop valve in a specific embodiment, wherein: Figure 1 It is the working state when the fluid flows in from the horizontal interface. Figure 2 It is the working state when the fluid flows in from the vertical interface.

[0034] It should be pointed out that the directional words horizontal, vertical, up and down mentioned in this article are all based on Figures 1 to 5 The components are located in the figure and the relative position relationship between the components is defined as the basis. The use of the directional words is only for the convenience of describing the technical solution. It should be understood that the use of the directional words does not constitute a limitation on the scope of protection.

[0035] The throttling stop valve provided in this embodiment includes a valve body 10 and a valve stem 20; wherein the valve body 10 has a valve cavity 12, a horizontal interface 13 and a vertical interface 14, a valve mouth portion 11 is provided in the valve cavity 12, the vertical interface 14 is connected to the valve mouth portion 11, and the horizontal interface 13 is connected to the valve cavity 12; the horizontal interface 13 and the vertical interface 14 can be respectively fixedly connected to external flow pipes to connect the throttling stop valve in the system pipeline.

[0036] The valve stem 20 is disposed in the valve cavity 12 . In this embodiment, the valve stem 20 and the valve body 10 are still connected by threads. When the valve stem 20 is rotated, the valve stem 20 can move up and down along the valve cavity 12 under the action of the thread pair.

[0037] In this embodiment, the throttling stop valve further includes a valve core 30, which has a throttling flow hole 30a. The valve core 30 is located between the valve port 11 and the valve stem 20, and can move downward along the valve cavity 12 to abut against the valve port 11, or move upward along the valve cavity 12 to separate from the valve port 11, and is configured as follows:

[0038] When the valve core 30 abuts against the valve port 11, the throttle hole section 111 of the valve port 11 communicates with the throttle flow hole 30a;

[0039] When the valve core 30 is separated from the valve opening 11 , the horizontal interface 13 is communicated with the valve opening 11 and the vertical interface 14 through the flow channel formed between the valve core 30 and the inner wall of the valve cavity 12 .

[0040] The throttling stop valve is arranged with a valve core 30 between the valve stem 20 and the valve mouth 11. When the valve stem 20 is rotated to move downward, the valve stem 20 can press the valve core 30 against the valve mouth 11 and block the throttling flow hole 30a of the valve core 30, thereby cutting off the connection between the horizontal interface 13 and the vertical interface 14. When the valve stem 20 is rotated to move upward, it can make way to form a space for the valve core 30 to move up and down.

[0041] After designing as above, refer to Figure 1When the fluid flows in from the horizontal interface 13 of the throttling stop valve, the valve core 30 is pushed downward to abut against the valve port 11 under the action of the fluid pressure. At this time, the throttling flow hole 30a of the valve core 30 is connected with the throttling hole section 111 of the valve port 11, and the fluid flows out of the vertical interface 14 through the throttling flow hole 30a and the valve port 11. In this working state, the throttling flow hole 30a and the throttling hole section 111 play a throttling role, and the degree of throttling ultimately depends on the smaller one of the throttling flow hole 30a and the throttling hole section 111; refer to Figure 2 When the fluid flows in from the vertical interface 14 of the throttling stop valve, the valve core 30 is pushed upward under the action of the fluid pressure, so that it is separated from the valve mouth 11. At this time, the fluid flows out of the horizontal interface 13 through the flow channel between the valve mouth 11, the valve core 30 and the valve cavity. In this working state, the throttling hole section 111 of the valve mouth 11 has a throttling effect on the fluid.

[0042] In actual setting, the sizes of the throttling hole section 111 and the throttling flow hole 30a, and the size relationship between the two are determined according to the requirements of the two flow directions.

[0043] As described above, the throttling stop valve can realize both the shut-off function and the bidirectional throttling function, and has wide applicability. When it is applied to the refrigeration system pipeline, the setting of the throttling component can be omitted, which not only saves costs, but also reduces the number of welding points in the pipeline and reduces the probability of leakage.

[0044] In a specific solution, the throttling stop valve also includes a spring 40 abutting between the valve core 30 and the valve mouth 11, so that when the fluid flows in from the vertical interface 14, the valve core 30 is pushed upward. Under the support of the spring 40, the vibration of the valve core 30 can be avoided and the noise can be reduced.

[0045] It should be understood that the elastic force setting of the spring 40 should not affect the up and down movement of the valve core 30 under the action of the fluid pressure.

[0046] It is understandable that in addition to the spring 40 , other elastic components may be provided between the valve core 30 and the valve mouth 11 , as long as they can provide support to the valve core 30 when the valve core 30 is lifted up without affecting the movement of the valve core 30 .

[0047] At the same time, the throttling stop valve also includes a limiting structure for limiting the position of the elastic component.

[0048] As mentioned above, after the elastic component is set between the valve core 30 and the valve mouth 11, the valve core 30 is supported by the elastic component. When the fluid flows in from the horizontal interface 13, the valve core 30 moves downward under the action of the fluid pressure, compressing the elastic component. Due to the support of the elastic component, the valve core 30 moves relatively smoothly. Since the position of the elastic component is limited by the limiting structure, the valve core 30 is not easy to deviate during the movement. When the fluid flows in from the vertical interface 14, the valve core 30 moves upward under the action of the fluid pressure, the elastic component resets and bounces up. Similarly, under the support and limitation of the elastic component, the movement of the valve core 30 is stable and not easy to deviate. That is to say, in the process of two-way flow of the fluid, the valve core 30 can move smoothly, and is supported and limited by the elastic component, so no vibration occurs, thereby reducing the noise during the operation of the throttling stop valve.

[0049] Please refer to Figure 3 , Figure 3 It is a cross-sectional schematic diagram of the valve body of the throttling stop valve in a specific embodiment.

[0050] In a specific solution, the valve mouth portion 11 further includes a tapered hole section 112 located above the throttling hole section 111 . When the valve core 30 abuts against the valve mouth portion 11 , the lower end of the valve core 30 forms a line seal with the tapered inner wall of the tapered hole section 112 .

[0051] Specifically, an upward step surface 15 is formed at the connection between the tapered hole section 112 and the valve cavity 12, and the lower end of the spring 40 abuts against the step surface 15; specifically, a downward step surface can also be set on the valve core 30, so that the upper end of the spring 40 abuts against the step surface. In this way, the step surface 15 and the step surface form the aforementioned limiting structure to achieve support and positioning of the spring 40.

[0052] Of course, in actual setting, the connection between the throttle hole section 111 of the valve mouth 11 and the valve cavity 12 can also be a planar structure, that is, the valve cavity 12 is directly connected to the throttle hole section 111, and no transitional tapered hole section 112 is set in the middle. It can be understood that the valve cavity 12 and the throttle hole section 111 form a stepped hole structure. In this way, when the valve core 30 abuts against the valve mouth 11, the lower end face of the valve core 30 and the upward stepped surface at the connection between the valve cavity 12 and the throttle hole section 111 are fitted to form a seal, which belongs to a surface seal. Compared with the above-mentioned line seal structure, the surface seal has higher requirements for the processing accuracy of the sealing surface.

[0053] Please refer to Figure 4 and Figure 5 , Figure 4 It is a structural schematic diagram of a valve core of a throttling stop valve in a specific embodiment; Figure 5 for Figure 4 Front view of valve core shown.

[0054] In a specific solution, the valve core 30 includes a valve core body 31, and the peripheral wall of the valve core body 31 is provided with more than two radially extending protrusions 311, wherein the radial dimension from the center of the valve core body 31 to the protrusion 311 is adapted to the radius of the valve cavity 12. After assembly, the valve core 30 relies on the protrusion 311 and the valve cavity 12 to achieve radial positioning, thereby preventing the valve core 30 from radially shaking in the valve cavity 12. At the same time, the space formed between the peripheral wall of the valve core body 31 and the inner wall of the valve cavity 12 connects the top and bottom of the valve core body 31 to form the aforementioned flow channel.

[0055] More specifically, the protrusion 311 is a long strip-shaped protrusion extending along the axial direction of the valve core body 31 , and a plurality of protrusions 311 are evenly distributed along the circumference of the valve core body 311 to ensure the stability of the up and down movement of the valve core 30 and prevent deflection.

[0056] The figure exemplarily shows a structure in which the valve core body 31 is provided with three protrusions 311 . It can be understood that the number of the protrusions 311 can be determined as needed during actual setting.

[0057] In addition to the above structure, the valve core 30 may also have other structures, for example, the outer diameter of the valve core body 31 is adapted to the inner diameter of the valve cavity 12, and a through groove is provided on the periphery of the valve core body 31 to connect the upper and lower parts of the valve core body 31 to form the aforementioned flow channel. The specific form of the through groove is not limited, as long as the upper valve cavity and the lower valve cavity separated by the valve core 30 can be connected.

[0058] In a specific solution, the valve core 30 further includes a first boss 32 extending axially along the lower end of the valve core body 31, so that the upper portion of the spring 40 disposed between the valve core 30 and the valve mouth portion 11 can be sleeved on the first boss 32, abutting against the lower end of the valve core body 31, and further limiting the spring 40. It can be understood that after such a design, the lower end surface of the valve core body 31 is the aforementioned stepped surface. Obviously, the first boss 32 can extend into the tapered hole section 112 of the valve mouth portion 11, and abut against the inner wall of the tapered hole section 112.

[0059] In addition, the upper end of the valve core body 31 is also provided with an axially extending second boss 33 , so that the valve core 30 forms a substantially symmetrical structure up and down, which is beneficial to the stability of the valve core 30 moving up and down.

[0060] In a specific solution, a filter component 50 is provided in the horizontal interface 13 and / or the vertical interface 14 of the throttling stop valve to prevent impurities in the fluid from flowing into the valve and blocking the throttling channel.

[0061] In addition to the above-mentioned throttling stop valve, the present invention further provides an air conditioning system, including an indoor switch and an outdoor switch, wherein the throttling stop valve described in any one of the above items is provided on the pipeline connecting the indoor switch and the outdoor switch.

[0062] Since the above-mentioned throttling stop valve has the above-mentioned technical effects, the air-conditioning system having the throttling stop valve also has corresponding technical effects, which will not be discussed again here.

[0063] The throttling stop valve and the air conditioning system having the same provided by the present invention are introduced in detail above. The principle and implementation mode of the present invention are explained in this article by using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. Throttle stop valve, characterized in that: The invention comprises a valve body (10) having a valve cavity (12) and a valve stem (20) arranged in the valve cavity (12); the valve body (10) further comprises a vertical interface (14) and a horizontal interface (13) communicating with the valve cavity (12); a valve port (11) is arranged in the valve cavity (12); the vertical interface (14) is communicated with the valve port (11), and the horizontal interface (13) is communicated with the valve cavity (12); the valve port (11) comprises a throttling hole section (111); The valve core (30) is located between the valve opening (11) and the valve stem (20) and is capable of moving downward along the valve cavity (12) to abut against the valve opening (11), or moving upward along the valve cavity (12) to detach from the valve opening (11); an elastic component is abutted between the valve core (30) and the valve opening (11), and a limiting structure for limiting the position of the elastic component is also included; the valve stem (20) is capable of moving up and down along the valve cavity (12), and when the valve stem (20) moves downward, the valve core (30) can be pressed against the valve opening (11) and the throttling hole (30a) is blocked; The valve core (30) comprises a valve core body (31), a first boss (32) extending axially along the lower end of the valve core body (31), and a second boss (33) extending axially along the upper end of the valve core body (31); the lower end surface of the valve core body (31) forms a stepped surface, and the first boss (32) is inserted into the elastic component; The step surface (15) and the stepped surface form the limiting structure.

2. The throttle stop valve according to claim 1, characterized in that: An upward step surface (15) is formed at the connection between the valve opening (11) and the valve cavity (12), and the lower end of the elastic component abuts against the step surface (15).

3. The throttle stop valve according to claim 2, characterized in that: The peripheral wall of the valve core body (31) is provided with more than two protrusions (311) extending radially, and the radial dimension from the center of the valve core body (31) to the protrusions (311) is adapted to the radius of the valve cavity (12); a flow channel is formed between the outer peripheral wall of the valve core body (31) and the inner wall of the valve cavity (12).

4. The throttle stop valve according to claim 1, characterized in that: The outer diameter of the valve core body (31) is matched to the inner diameter of the valve cavity (12), and the periphery of the valve core body (31) has a through groove communicating with the upper and lower parts of the valve core body (31).

5. The throttle stop valve according to any one of claims 1 to 4, characterized in that: When the valve core (30) abuts against the valve opening (11), the throttling hole section (111) is in communication with the throttling flow hole (30a); When the valve core (30) is separated from the valve opening (11), the horizontal interface (13) is connected to the vertical interface (14) through a flow channel formed between the valve opening (11), the valve core (30) and the inner wall of the valve cavity (12).

6. The throttle stop valve according to any one of claims 1 to 4, characterized in that: The valve mouth portion (11) further comprises a tapered hole section (112) located above the throttling hole section (111); when the valve core (30) abuts against the valve mouth portion (11), a lower end of the valve core (30) forms a line seal with a tapered inner wall of the tapered hole section (112).

7. The throttle stop valve according to any one of claims 1 to 4, characterized in that: A filter component (50) is provided in the horizontal interface (13) and / or the vertical interface (14).

8. An air conditioning system, comprising an indoor switch and an outdoor switch, characterized in that: The pipeline connecting the indoor switch and the outdoor switch is provided with the throttling stop valve according to any one of claims 1 to 7.

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