Valve device and heat exchange equipment

Abstract

The utility model relates to a valve device and heat exchange equipment, the valve device comprises a valve body, the valve body comprises a main body part and a pipe connecting part, the main body part is provided with a valve cavity, a pipe connecting hole part is arranged in the pipe connecting part, the pipe connecting part is arranged at one axial end of the main body part, the valve cavity communicates with the pipe connecting hole part, and the outer diameter of the pipe connecting part is larger than that of the main body part. According to the arrangement of the valve device, the outer diameter of the pipe connecting part is set to be larger than that of the main body part, the purpose of miniaturization of the valve device can be achieved, meanwhile, the valve device is suitable for all connecting pipes in the prior art, the applicability is improved, meanwhile, the welding quality of the valve device and the connecting pipes can be guaranteed, and the product quality is guaranteed.

Description

Technical Field

[0001] This application relates to the field of heat exchange equipment technology, specifically to a valve device and heat exchange equipment. Background Technology

[0002] A shut-off valve is a valve device used to connect the indoor and outdoor units in heat exchange equipment such as air conditioners or other refrigeration cycle systems, and is used to open or close the refrigerant circuit during installation and maintenance.

[0003] To achieve miniaturization, the overall volume of the valve device is reduced. Consequently, the inner diameter of the connecting pipe hole used for welding with external pipes is reduced, resulting in a smaller connecting pipe size that cannot be used with existing pipes. Furthermore, the reduced connecting pipe hole diameter also affects the refrigerant flow rate. If the valve body volume is reduced while the inner diameter of the connecting pipe hole remains unchanged, the thickness of the sidewall of the connecting pipe hole is reduced, making it easier for the weld to burn through during the welding process, thus affecting product quality.

[0004] Therefore, how to achieve miniaturization while making the valve device applicable to various pipes in the prior art, improving its applicability, and ensuring the welding quality of the valve device and pipes to guarantee product quality is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide a valve device and heat exchange equipment that can achieve miniaturization while making the valve device applicable to various pipes in the prior art, improving applicability, and at the same time ensuring the welding quality of the valve device and pipes, thus guaranteeing product quality.

[0006] To solve the above-mentioned technical problems, this application provides a valve device, including a valve body. The valve body includes a main body and a connecting pipe. The main body is provided with a valve cavity, and the connecting pipe is provided with a connecting pipe hole. The connecting pipe is located at one axial end of the main body. The valve cavity communicates with the connecting pipe hole, and the outer diameter of the connecting pipe is larger than the outer diameter of the main body.

[0007] This application also provides a heat exchange device, including the valve device described above.

[0008] Compared with the prior art, the valve device and heat exchange equipment provided in this application have the following technical advantages:

[0009] To achieve the goals of miniaturization and lightweighting of the structure, the overall volume of the valve device can be reduced. In this embodiment, the outer diameter of the connecting pipe is larger than the outer diameter of the main body. With this setting, the outer diameter of the main body can be reduced accordingly when achieving miniaturization. Since the outer diameter of the connecting pipe is relatively large, it can ensure that the diameter of the connecting pipe hole and the wall thickness of the connecting pipe are sufficient to prevent the side wall of the connecting pipe from being welded through when welding with the first connecting pipe, thus ensuring welding quality and product quality.

[0010] In other words, even considering the miniaturization design, since the outer diameter of the connector is larger than that of the main body, there is no need to reduce the size of the connector hole. This allows the first connector to use the connectors in the prior art without the need to set up a connector that matches the connector hole. It has good applicability, and the size of the first connector does not change, so the flow rate requirement can still be guaranteed.

[0011] This valve assembly achieves miniaturization while maintaining product quality, ensuring compatibility with the first connecting pipe and flow rate, simply by having the outer diameter of the connecting pipe larger than that of the main body. Furthermore, since the valve body only increases in size at certain locations without increasing its overall volume, the material used is reduced, lowering the overall weight and effectively reducing production costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the valve device provided in this application;

[0013] Figure 2 yes Figure 1 Schematic diagram of the middle valve body;

[0014] Figure 3 yes Figure 2 A sectional view;

[0015] Figure 4 yes Figure 2 The right view;

[0016] Figure 5 This is a stress distribution diagram of the valve body under the first experimental conditions;

[0017] Figure 6 This is a stress distribution diagram of the valve body under the second experimental conditions.

[0018] Appendix Figures 1-6 The reference numerals in the attached figures are explained as follows:

[0019] 10 Valve body; 20 First connecting pipe; 30 Connecting pipe nut;

[0020] 1 main body, 11 valve chambers;

[0021] 2. Connecting part, 21. Connecting hole part;

[0022] 3. Connecting part; 31. Connecting hole part; 32. External thread part;

[0023] 4 ring-shaped reinforcing rings;

[0024] 5. Mounting section, 51. Mounting plate;

[0025] 6. Handover section;

[0026] 7. Filling section; 71. Filling hole section;

[0027] 8. First valve cap;

[0028] 9. Filling valve cap. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] This application provides a valve device and a heat exchanger, wherein the heat exchanger can be an air conditioner or other refrigeration cycle equipment, such as... Figure 1 As shown, the heat exchange equipment includes a valve device and components such as a first connecting pipe 20 and a second connecting pipe (not shown in the figure). The first connecting pipe 20 and the second connecting pipe are respectively connected to the valve device. When the valve device is in the open state, the first connecting pipe 20 and the second connecting pipe are connected.

[0031] like Figure 1 and Figure 2 As shown, the valve device includes a valve body 10, which includes a main body 1, a connecting pipe 2, a mounting part 5, etc. The main body 1 has a valve cavity 11 inside, and the connecting pipe 2 has a connecting pipe hole 21 inside, which communicates with a first connecting pipe 20. The connecting part 3 has a connecting hole 31 inside, which communicates with a second connecting pipe. The valve device also includes a valve core and a valve port. The valve core is located within the valve cavity 11 and can move axially along the valve body 10 to open and close the valve port. When the valve port is open, the shut-off valve is open, and the connecting pipe hole 21 and the connecting hole 31 communicate with the valve cavity 11, and the first connecting pipe 20 and the second connecting pipe communicate with each other.

[0032] Specifically, the connection between the connecting part 2 and the first connecting part 20 is achieved by inserting the end of the first connecting part 20 into the connecting hole 21, and then welding and sealing the end of the connecting part 2 to the outer peripheral wall of the first connecting part 20 circumferentially. The connection between the connecting part 3 and the second connecting part is achieved by providing an external thread 32 on the outer peripheral wall of the connecting part 3, and the second connecting part and the connecting part 3 can be installed using a connecting nut 30.

[0033] To achieve the goals of miniaturization and lightweighting of the structure, the overall volume of the valve device can be reduced. In this embodiment, the outer diameter D2 of the connecting pipe 2 is larger than the outer diameter D1 of the main body 1. With this setting, the outer diameter D1 of the main body 1 can be reduced accordingly when achieving miniaturization. Since the outer diameter D2 of the connecting pipe 2 is relatively large, it can ensure that the diameter of the connecting pipe hole 21 and the wall thickness G of the connecting pipe 2 are sufficient to prevent the side wall of the connecting pipe 2 from being welded through when welding with the first connecting pipe 20, thus ensuring welding quality and product quality.

[0034] In other words, even considering the miniaturization design, since the outer diameter D2 of the connector 2 is larger than the outer diameter D1 of the main body 1, there is no need to reduce the size of the connector hole 21. This allows the first connector 20 to use connectors from the prior art without the need for additional connectors that match the connector hole 21. This provides good applicability, and since the size of the first connector 20 remains unchanged, the flow rate requirements can still be guaranteed.

[0035] The valve device provided in this embodiment is designed so that the outer diameter D2 of the connecting pipe 2 is larger than the outer diameter D1 of the main body 1. This allows the valve device to maintain product quality while meeting the requirements of miniaturization design, and also ensures the compatibility and flow rate of the first connecting pipe 20. In addition, since the valve body 10 only increases in size at certain locations without increasing the overall volume of the valve body 10, the material used in the valve device is reduced, the overall weight of the valve device is reduced, and the production cost is also effectively reduced.

[0036] like Figure 3 As shown, the axial length of the connecting pipe part 2 is E, and the axial length of the connecting pipe hole part 21 is H. Preferably, 1mm≤EH≤5mm. EH can be 1mm, 3mm, 5mm, etc. Of course, in this embodiment, EH can also be less than 1mm or greater than 5mm, such as 0.8mm, 6mm, etc. Setting EH in the range of 1mm-5mm can ensure the structural strength at this point while avoiding the situation where the length of the connecting pipe part 2 is too large due to the EH size being too large, resulting in an increase in weight, thereby reducing costs.

[0037] like Figure 2 and Figure 4 As shown, the outer peripheral wall of the connection between the main body 1 and the connecting pipe 2 is also provided with an annular reinforcing ring 4 along the circumferential direction. The provision of the annular reinforcing ring 4 can increase the structural strength of the connection between the main body 1 and the connecting pipe 2.

[0038] Of course, in this embodiment, the end of the main body 1 can be directly connected to the end of the connecting pipe 2. The setting of the annular reinforcing ring 4 can achieve a transition connection between the end of the main body 1 and the end of the connecting pipe 2, ensuring the structural strength of the connection between the main body 1 and the connecting pipe 2, thereby ensuring the overall structural strength of the valve body 10 and ensuring product quality.

[0039] like Figure 2 and Figure 4 As shown, the outer diameter of the annular reinforcing ring 4 on the side facing the connecting pipe 2 is larger than the outer diameter of the annular reinforcing ring 4 on the side facing the main body 1. Of course, in this embodiment, the annular reinforcing ring 4 can also be set as a structure with a constant diameter. When its outer diameter is set as a structure with a variable diameter, the annular reinforcing ring 4 can form a transition connection between the end of the connecting pipe 2 and the outer wall of the main body 1, making the external structure of the valve body 10 more regular and effectively reducing the overall weight.

[0040] like Figure 4 As shown, a junction 6 is also formed at the connection between the mounting part 5 and the connecting part 2. The junction 6 is located on the side of the mounting part 5 facing the main body part 1 and extends to the annular reinforcing ring 4. The provision of the junction 6 can increase the bonding strength between the mounting part 5 and the connecting part 2, thereby ensuring the overall structural strength. Furthermore, since the junction 6 can extend to the annular reinforcing ring 4, the overall structural strength can be further guaranteed.

[0041] Furthermore, since the wall thickness G of the connecting pipe 2 can be guaranteed, the setting of the annular reinforcing ring 4 and the junction 6 can guarantee the structural strength of the connection between the mounting part 5 and the connecting pipe 2, as well as the structural strength of the connection between the connecting pipe 2 and the main body 1. In this way, the probability of cracking at the connection between the connecting pipe 2 and the mounting part 5 due to excessive rotation torque of the connecting pipe nut 30 can be reduced when installing the second connecting pipe.

[0042] Figure 5 The stress distribution diagram of valve body 10 when rotating the connector nut 30 during the installation of the second connector is shown under the first experimental condition. In the first experimental condition, the outer diameter of the connector 2 is the same as the outer diameter of the main body 1, and no annular reinforcing ring 4 is provided. Figure 6 The diagram shows the stress distribution of the valve body 10 when the second connecting pipe is installed and the connecting pipe nut 30 is rotated under the second experimental condition. In the second experimental condition, the outer diameter of the connecting pipe 2 is larger than the outer diameter of the main body 1, and an annular reinforcing ring 4 is provided at the connection between the two, with the junction 6 extending to the annular reinforcing ring 4. Under both the first and second experimental conditions, the outer diameter of the main body 1 is the same, and the diameter of the connecting pipe hole 21 is the same, meaning that the specifications of the first connecting pipe 20 are the same.

[0043] from Figure 6It can be seen that the stress distribution at the junction 6 between the installation part 5 and the connecting part 2 is relatively uniform, with no local stress concentration. Figure 5 It can be seen that the junction 6 between the installation part 5 and the pipe part 2 is locally yellow, indicating greater stress.

[0044] Therefore, it can be seen that the valve body 10 of the valve device provided in this embodiment can ensure that the specifications of the first connecting pipe 20 remain unchanged while achieving the goal of miniaturization. At the same time, it can also ensure that the deformation or damage caused by excessive local stress during the rotation of the connecting pipe nut 30 during the connection of the second connecting pipe is avoided.

[0045] To further ensure the structural strength of the connection between the connecting part 2 and the mounting part 5, in this embodiment, a reinforcing rib is also provided between the mounting part 5 and the connecting part 2, or a reinforcing rib is also provided between the mounting part 5 and the main body 1, or reinforcing ribs are provided between the mounting part 5 and the connecting part 2, and between the mounting part 5 and the main body 1 respectively. Specifically, there are no restrictions on the shape and structure of the reinforcing rib.

[0046] In this embodiment, the specific structure of the mounting part 5 is not limited, such as... Figure 4 As shown, the mounting part 5 can be configured to include two mounting plates 51, which are symmetrically arranged on both sides of the connecting pipe part 2. The surface of the mounting plates 51 is perpendicular to the axis of the connecting pipe part 2, and each mounting plate 51 can be provided with mounting holes for installation. Of course, the mounting part 5 can also be configured as a block shape or an irregular shape, etc.

[0047] Of course, the number of mounting plates 51 can also be three or more, depending on the actual situation. Each mounting plate 51 is provided with a junction 6 at the connection between itself and the connecting pipe 2, and each mounting plate 51 is provided with a corresponding reinforcing rib to ensure the structural stability of each mounting plate 51.

[0048] The connection between the connecting part 3 and the main body 1 may also be provided with an annular reinforcing part along the circumferential direction. The setting of the annular reinforcing part can increase the structural strength of the connection between the connecting part 3 and the main body 1, improve the torsional resistance of the connection between the connecting part 3 and the main body 1, and reduce the probability that the valve body 10 will deform due to excessive rotation torque of the pipe nut 30 during the installation of the second pipe.

[0049] Furthermore, the end of the reinforcing rib furthest from the mounting part 5 is fixed to the annular reinforcing part, forming an integral reinforcing structure to further ensure the structural stability of the valve device during disassembly and assembly, and to prevent the valve body 10 from deforming.

[0050] Therefore, the valve device can be miniaturized by reducing its overall size, while its applicability and structural strength can be ensured by increasing the size and strengthening the local structures, thereby effectively reducing production costs.

[0051] like Figure 1 As shown, the valve device also includes a first valve cap 8, which is located at the end of the main body 1 away from the connecting pipe 2. The valve device also includes a charging section 7, which extends outward along the radial direction of the main body 1. The charging section 7 has a charging hole 71 that communicates with the valve cavity 11 for charging refrigerant. The charging section 7 can be sealed by the charging valve cap 9.

[0052] Specifically, the valve body 10 of the valve device is preferably a one-piece forged structure, that is, the main body 1, mounting part 5, connecting part 2, connecting part 3, annular reinforcing ring 4, junction part 6, filling part 7, etc. are all one-piece forged structures. Of course, the valve body 10 can also be a split structure and fixed by welding or other methods, but the one-piece structure can simplify the overall structure and the subsequent assembly process of the valve device.

[0053] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A valve device, characterized in that, The valve body (10) includes a main body (1) and a connecting pipe (2). The main body (1) has a valve cavity (11), and the connecting pipe (2) has a connecting pipe hole (21). The connecting pipe (2) is located at one axial end of the main body (1). The valve cavity (11) communicates with the connecting pipe hole (21), and the outer diameter of the connecting pipe (2) is larger than the outer diameter of the main body (1).

2. The valve device according to claim 1, characterized in that, The difference between the length of the connecting pipe part (2) and the length of the connecting pipe hole part (21) is in the range of 1mm-5mm.

3. The valve device according to claim 1, characterized in that, At the connection between the main body (1) and the connecting pipe (2), an annular reinforcing ring (4) is provided in the circumferential direction.

4. The valve device according to claim 3, characterized in that, The outer diameter of the end of the annular reinforcing ring (4) facing the connector (2) is greater than the outer diameter of the end of the annular reinforcing ring (4) facing the main body (1).

5. The valve device according to claim 3, characterized in that, The valve body (10) also includes a mounting part (5), which is located on the radial outer side of the connecting pipe part (2). A junction part (6) is also formed at the connection between the mounting part (5) and the connecting pipe part (2). The junction part (6) is located on the side of the mounting part (5) facing the main body part (1) and extends to the annular reinforcing ring (4).

6. The valve device according to claim 5, characterized in that, The mounting part (5) includes at least two mounting plates (51), and each mounting plate (51) is provided with a junction part (6) between it and the connecting pipe part (2).

7. The valve device according to claim 5, characterized in that, A reinforcing rib is provided between the mounting part (5) and the connecting part (2), and / or between the mounting part (5) and the main body part (1).

8. The valve device according to claim 6, characterized in that, It also includes a connecting part (3) that extends radially outward along the main body (1), the connecting part (3) having a connecting hole (31) communicating with the valve cavity (11), the connecting part (3) having an external thread (32) for connecting the second pipe, and an annular reinforcing part being provided at the connection between the connecting part (3) and the main body (1) in the circumferential direction.

9. The valve device according to any one of claims 1-4, characterized in that, The valve body (10) is a one-piece molded structure.

10. A heat exchange device, characterized in that, Includes the valve device as described in any one of claims 1-9.

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