A container for refrigeration

Abstract

A container for refrigeration, comprising a cap part and a joint, the joint comprising a ring part and a solder accommodating part, the solder accommodating part being recessed relative to the ring part in a direction away from the cap part, the solder accommodating part being farther away from the center of the joint than the ring part, the joint and the cap part being filled with solder, the solder being less likely to flow to the outer surface of the joint, and the waste of solder being relatively reduced, and the container being more environmentally friendly.

Description

Technical Field

[0001] This invention relates to the field of refrigeration control technology, and more specifically to a refrigeration container. Background Technology

[0002] In air conditioning or refrigeration systems, there are usually refrigeration containers. Taking the dryer filter as an example, the dryer filter is generally installed in the suction line of the compressor to dry the moisture in the refrigerant and filter the solid impurities in the refrigerant in order to maintain the normal operation of the air conditioning and refrigeration equipment.

[0003] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a drying filter in the background art.

[0004] The dryer filter in the background technology includes an inlet end cylinder 01 and an outlet end cylinder 07, which together form an installation cavity. Within the installation cavity, from the inlet end to the outlet end, a one-way valve assembly 02, a parallel perforated mesh 03, a metal filter screen 04, a filter element 05, a glass fiber filter screen 06, and the parallel perforated mesh 03 are arranged sequentially. In the installed state, the parallel perforated mesh 03 and the metal filter screen 04 are located between the filter element 05 and the one-way valve assembly 02.

[0005] Taking the connector and the inlet end cylinder 01 as an example, part of the connector is inserted into the through hole of the inlet end cylinder 01. Then, a welding ring is placed on the outer periphery of the contact position between the connector and the inlet end cylinder 01. Then, the two are fixed by furnace welding. After the solder melts, it is easy to climb along the height direction of the connector. Summary of the Invention

[0006] This application provides a refrigeration container, including an end cap and a connector, characterized in that the connector includes an annular portion and a solder receiving portion, the solder receiving portion being recessed relative to the annular portion in a direction away from the end cap, the distance of the solder receiving portion from the center of the connector being closer than the distance of the annular portion from the center of the connector, and solder filling the space between the connector and the end cap.

[0007] In the refrigeration container of this application, the distance between the solder receiving part and the center of the joint is closer than the distance between the annular part and the center of the joint. The solder is more likely to fill the gap between the joint and the end cap that needs to be welded, and it is less likely to flow to the outer surface of the joint. This can relatively reduce the waste of solder and is more environmentally friendly. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of a specific embodiment of a bidirectional drying filter in the background art;

[0009] Figure 2A cross-sectional view of the dryer filter provided in this application;

[0010] Figure 3 for Figure 2 A cross-sectional view of the filter element;

[0011] Figure 4 for Figure 2 Structural diagram of the one-way valve assembly;

[0012] Figure 5 for Figure 2 Cross-sectional view of the one-way valve assembly;

[0013] Figure 6 for Figure 2 Top view of the middle valve plate;

[0014] Figure 7 for Figure 2 Schematic diagram of the supporting component in the middle;

[0015] Figure 8 for Figure 2 Schematic diagram of the middle filter component;

[0016] Figure 9 for Figure 2 Partial schematic diagram of the middle end cap and connector.

[0017] Figure 1 The annotations in the accompanying drawings are explained as follows:

[0018] 01 Inlet cylindrical section, 02 One-way valve assembly, 03 Parallel perforated mesh, 04 Metal filter screen, 05 Filter element, 06 Glass fiber filter screen, 07 Outlet cylindrical section.

[0019] Figure 2-9 The annotations in the attached figures are explained as follows:

[0020] 1. Housing, 11. End cap, 111. Conical section, 112. First annular section, 113. Flanged section, 12. Cylindrical section, 2. Connector, 21. Threaded section, 22. Annular section, Solder receiving section, 24. Extension section, 25. Force-bearing section, 2a. First outer edge section, 2b. Second outer edge section, 2c. Third outer edge section, 3. Filter element, 31. Filter element hole section, 32. Filter element abutment section, 4. One-way valve assembly, 41. Main body component, 411. First valve, 412. Second valve port, 413. Protrusion, 4131. Outer edge section, 4132. Inner edge section, 42. Support component, 421. Abutment section, 422. Insertion section, 4221. Through hole section, 423. Support component hole section, 43. Valve plate, 431. First valve plate, 432. Second valve plate, 433. Valve plate connection section, 434. Valve plate hole section, 44. Baffle, Filter component, 5. Filter component hole section 51 Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The terms "first" and "second" used in this article are merely for the convenience of describing two or more structures or components that are identical or similar in structure, and do not indicate any special limitation on the order.

[0023] The refrigeration container of this application is a container that can be used in a refrigeration system. It can be a dryer filter, a liquid receiver, an oil separator, or a gas-liquid separator. The dryer filter is used as an example below.

[0024] Please refer to Figure 2-9 , Figure 2 A cross-sectional view of the dryer filter provided in this application; Figure 3 for Figure 2 A cross-sectional view of the filter element; Figure 4 for Figure 2 Structural diagram of the one-way valve assembly; Figure 5 for Figure 2 Cross-sectional view of the one-way valve assembly; Figure 6 for Figure 2 Top view of the middle valve plate; Figure 7 for Figure 2 Schematic diagram of the supporting component in the middle; Figure 8 for Figure 2 Schematic diagram of the middle filter component; Figure 9 for Figure 2 Partial schematic diagram of the middle end cap and connector.

[0025] like Figure 2 As shown, this application provides a drying filter, including a housing 1. The housing 1 includes an end cap portion 11 and a cylindrical portion 12. The cylindrical portion 12 is generally a hollow cylindrical structure. There are two end cap portions 11, which are respectively disposed on both sides of the cylindrical portion 12. The end cap portions 11 and the cylindrical portion 12 are fixedly connected. A cavity is formed inside the housing 1. The housing 1 is provided with a filter element 3 and a one-way valve assembly 4.

[0026] It is worth noting that the method described in the background art can also be adopted, that is, the shell 1 does not have a cylindrical part 12, and the ends of the two end caps 11 are fixedly connected (forming a cavity inside). This embodiment is illustrated by providing a cylindrical part 12.

[0027] Please refer to Figure 3 The dryer filter provided in this application includes a filter element 3, which can be made of molecular sieve sintering. It can adsorb impurities and moisture in the air conditioning or refrigerator system so as to make the refrigeration system operate smoothly.

[0028] Furthermore, the filter element 3 can be roughly hollow cylindrical in shape, with a through filter element hole 31 at its center. It is worth noting that the filter element hole 31 can be configured to penetrate both ends of the filter element 3, or it can be configured to not penetrate completely. For example, filter element holes 31 can be provided at both ends, while a molecular sieve is still provided at the center, and the filter element holes 31 at both ends are not interconnected.

[0029] Please refer to the following for details. Figure 4-7 The one-way valve assembly 4 of this application includes a main body component 41, a valve plate 43, and a support component 42.

[0030] The main component 41 of this application is generally plate-shaped, and its shape is adapted to the cylindrical part 12. The main component 41 includes a first valve port 411 and a second valve port 412. The first valve port 411 and the second valve port 412 are in the form of through holes, which penetrate the upper and lower surfaces of the main component 41. The first valve port 411 is generally located at the center of the main component 41. There may be multiple second valve ports 412, which are generally located outside the first valve port 411. The second valve ports 412 are closer to the edge of the main component 41 than the first valve port 411.

[0031] Please refer to point 5 for details. Figure 6 The valve plate 43 of this application is generally in the form of a thin sheet structure, including a first valve plate 431, a second valve plate 432, and a valve plate connecting portion 433. The first valve plate 431 and the second valve plate 432 are circular (or other shapes, such as regular hexagons). The valve plate connecting portion 433 is connected to a portion of the outer circumference of the first valve plate 431. When the first valve plate 431 is subjected to force, the first valve plate 431 can rotate relative to the valve plate connecting portion 433 with the portion connected to it as a fulcrum. A portion of the outer circumferential edge of the valve plate connecting portion 433 is connected to a portion of the outer circumferential edge of the second valve plate 432. When the second valve plate 432 is subjected to force, the second valve plate 432 can rotate relative to the valve plate connecting portion 433 with the portion connected to it as a fulcrum.

[0032] The valve plate 43 can be made of a metal material with elastic function. When the first valve plate 431 and the second valve plate 432 change from a state of being under force to a state of being not under force, the first valve plate 431 and the second valve plate 432 can return to their original state.

[0033] The valve plate 43 is fixedly connected to the main body component 41. Specifically, the valve plate connecting part 433 of the valve plate 43 and the main body component 41 can be fixedly connected by welding or riveting. After the valve plate 43 is fixedly connected to the main body component 41, the valve plate 43 is located on the side of the main body component 41 that is closer to the filter element 3. In addition, the first valve plate 431 is correspondingly arranged with the first valve port 411, and the second valve plate 432 is correspondingly arranged with the second valve port 412. That is, in a plane perpendicular to the axis of the dryer filter, the orthogonal projection of the first valve port 411 along the plane is located within the orthogonal projection of the first valve plate 431 along the plane, and the orthogonal projection of the second valve plate 432 along the plane is located within the orthogonal projection of the second valve port 412 along the plane.

[0034] Please refer to the following for details. Figure 7 The dryer filter of this application also includes a support member 42, which has a hollow structure and includes an abutment portion 421 and an insertion portion 422. The cross-section of the support member 42 is approximately "┛┗" shaped. The abutment portion 421 is approximately an extension portion in the circumferential direction, and the insertion portion 422 is approximately an axial portion. The insertion portion 422 is provided with a through hole portion 4221, which is approximately formed by the inner wall region of the insertion portion 422. Of course, the insertion portion 422 can also be approximately frustum shaped or other shapes that can be inserted into the filter element hole portion 31.

[0035] The abutting part 421 of the support member 42 is fixedly connected to the valve plate connecting part 433.

[0036] Please refer to the following for details. Figure 2 At least a portion of the insertion part 422 is inserted into the filter element hole 31, and the insertion part 422 can abut against the filter element 3. Here, "the insertion part 422 can abut against the filter element 3" means that when the filter element 3 and the support member 42 are installed, the insertion part 422 abuts against the filter element 3, or in the normal state, the insertion part 422 does not abut against the filter element 3. When the filter element 3 is subjected to force and shakes, the insertion part 422 can abut against the filter element 3. The support member 42 can limit the further shaking of the filter element 3 to reduce the noise caused by the collision between the filter element 3 and the support member 42 or the cylindrical part 1. After the support member 42 and the filter element 3 are engaged, the through hole 4221 of the support member 42 can communicate with the filter element hole 31 to allow the refrigerant to pass through.

[0037] Furthermore, in this embodiment, a plane perpendicular to the axial direction of the dryer filter is defined. The orthographic projection of the through hole 4221 along this plane is located within the orthographic projection of the first valve plate 431 along this plane. The first valve plate 431 and the abutment portion 421 can abut against each other on the side away from the valve plate 43.

[0038] At this time, when the first valve plate 431 is subjected to an external force to rotate it toward the direction of the filter element 3, the first valve plate 431 and the side of the abutment portion 421 that is relatively far away from the valve plate 43 can abut against each other, so as to limit the first valve plate 431 from rotating further toward the filter element 3.

[0039] Furthermore, in this embodiment, the orthographic projection of the second valve plate 432 along the plane containing the cross-section of the dryer filter covers the orthographic projection of the second valve port 412 along the plane. When the second valve plate 432 is subjected to an external force and attempts to rotate toward the second valve port 4121, the second valve plate 432 can abut against the main body component 41 to limit the first valve plate 431 from rotating further toward the second valve port 4121.

[0040] Since the support component 42 is located on the side of the valve plate 43 that is relatively close to the filter element 3, and the main body component 41 is located on the side of the valve plate 43 that is relatively far away from the filter element 3, when the refrigerant passes through the dryer filter, one of its first valve plate 431 and second valve plate 432 can be deflected, while the other cannot be deflected.

[0041] Please refer to the following for details. Figure 3 In this embodiment, the filter element 3 is also provided with a filter element abutment portion 32. Specifically, the cross-section of the filter element abutment portion 32 is approximately inclined, and its inner diameter gradually increases from the end of the filter element 3 toward the side wall of the filter element 3. When the second valve plate 432 is subjected to the impact force of the refrigerant and thus undergoes deflection, the filter element abutment portion 32 can abut against the second valve plate 432. After the second valve plate 432 abuts against the filter element abutment portion 32, the further deflection movement of the second valve plate 432 can be restricted, which can prevent the refrigerant from having an excessive impact force on the second valve plate 432, thereby causing a decrease in the elastic recovery performance of the second valve plate 432. In addition, after providing the filter element abutment portion 32, when the second valve plate 432 is opened to a certain extent, it can abut against the filter element abutment portion 32. Therefore, the filter element abutment portion 32 can limit the maximum opening position of the second valve plate 432, thereby protecting the second valve plate 432 and helping to increase the life of the one-way valve assembly 4. In addition, in this embodiment, the one-way valve assembly 4 also includes a baffle 44. The orthographic projection of the baffle 44 along the plane overlaps with the orthographic projection of the first valve plate 431 along the plane. Furthermore, the baffle 44 is fixedly connected to the main body component 41 or integrally formed.

[0042] Furthermore, the end of the baffle 44 that is integrally formed or fixedly connected to the main body component 41 is closer to the main body component 41 of the one-way valve assembly 4 than the end opposite to that end.

[0043] With the above settings, when the refrigerant flows in the direction of opening the second valve port 4121, the refrigerant applies a force to the first valve plate 431 near the support component. When the refrigerant continuously applies this force to the first valve plate 431, the first valve plate 431 is prone to problems such as decreased recovery performance. After setting the baffle 44, since the baffle 44 and the first valve plate 431 have an overlapping area in the axial direction, the force that should be applied to the first valve plate 431 is partially shared by the baffle 44. Therefore, the force applied by the refrigerant to the first valve plate 431 can be reduced, which is beneficial to increasing the life of the one-way valve assembly 4.

[0044] Furthermore, when the refrigerant flows in the direction of opening the first valve port 411, the refrigerant applies force to the first valve plate 431 to open the first valve port 411. If the force is large enough to cause the first valve plate 431 to rotate relatively much relative to the valve plate connection part 433, problems such as a decrease in the recovery performance of the first valve plate 431 may occur. After the baffle is installed, when the first valve plate 431 is opened to a certain extent, it can abut against the baffle. Therefore, the baffle can limit the maximum opening position of the first valve plate 431, thereby protecting the first valve plate 431 and helping to increase the life of the one-way valve assembly.

[0045] Please refer to the following for details. Figure 2 , Figure 8 as well as Figure 9 In this embodiment, a filter component 5 is also included. The filter component 5 has a filter component hole 51 at its approximate center position. In the product, the insertion part 422 of the support component passes through the filter component hole 51. The filter component 5 is located between the abutment part 421 of the support component and the filter element (only for the filter component 5, the support component and the filter element).

[0046] With the above settings, the filter element 5 can further filter impurities in the refrigerant flowing through the dryer filter. In addition, since the filter element 5 is made of a relatively soft material compared to the support element, it has a buffering effect on the filter element, which can reduce the impact force on the filter element and reduce the occurrence of filter element breakage.

[0047] In this embodiment, the main body component 41 is fixedly connected to the housing 1, and the housing 1 is provided with connectors 2 at both axial ends for connecting to the pipelines in the refrigeration system.

[0048] In conjunction with 2, the cylindrical part 1 of this embodiment includes an end cap part 11 and a cylindrical part 12. The end cap part 11 includes a tapered section 111. The large-diameter end of the tapered section 111 may be provided with a first ring section 112 extending radially outward. The outer edge of the first ring section 112 may be provided with a flange part 113. The flange part 113 and the tapered section 111 are respectively located on both axial sides of the first ring section 112. In the assembled state, part of the cylindrical part 12 is located inside the end cap part 11. The main body component 41 abuts against the first ring section 112 and the cylindrical part 12. The flange part 113 is welded and fixed to the cylindrical part 12 so that the main body component 41 is fixedly connected to the cylindrical part 1.

[0049] The end cap 11 is provided with an end cap hole 114. The connector 2 is fixedly connected to the end cap 11 and communicates with the opening, allowing refrigerant to flow into the housing 1 from the connector 2 or out of the dryer filter from the housing 1.

[0050] With this approach, the cylindrical part 12 is first inserted into the end cap part 11 for initial positioning before welding, making the welding operation relatively easy and the welding reliability relatively high. Furthermore, the main body part 41 is positioned by surface contact with the first ring segment 112, resulting in a larger contact area, which is more conducive to ensuring the reliable fixation of the main body part 41.

[0051] The drying filter provided in this embodiment mainly uses the support member 42 to fix the filter element 3. The insertion part 422 of the support member 42 is inserted into the filter element hole 31, and the abutting part 421 of the support member 42 abuts against the filter element 3. Compared with the solution where the bracket covers the outer periphery of the filter element 3, the drying filter of this application can directly utilize the space between the filter element 3 and the inner wall of the cylindrical part 12. Since there are requirements for the flow area between the outer side of the filter element 3 and the inner wall of the cylindrical part 1 during product use, the setting of the support member 42 can make the filter element 3 as large as possible while meeting the flow area between the outer side of the filter element 3 and the inner wall of the cylindrical part 1, or reduce the volume of the cylindrical part 1 when the filter element 3 is the same.

[0052] In applications such as refrigeration systems, there are generally two ways to connect two parts or pipes: welded connection and threaded connection. Threaded connection is widely used, and it allows for easy maintenance and is more environmentally friendly, as new parts can be replaced by unscrewing the threads, depending on the actual operating conditions, such as leaks or the end of component lifespan.

[0053] The dryer filter of this application has a threaded portion 21 in the connector 2. The threaded portion 21 can be in the form of an external thread or an external-internal thread. In this embodiment, the threaded portion 21 is exemplified as an internal thread. The threaded portion 21 can be threadedly connected to other pipe fittings. The connector 2 also includes an annular portion 22 and a solder receiving portion 23 that are closer to the end cap portion 11 than the threaded portion. The solder receiving portion 23 is generally recessed relative to the annular portion 22 in a direction away from the end cap portion 11. The annular portion 22 is located on the circumferential outer side of the solder receiving portion 23, that is, the distance of the solder receiving portion 23 from the center of the end cap portion 11 is closer than the distance of the annular portion 22 from the center of the end cap portion 11.

[0054] In actual processing, the solder (e.g., solder ring) can be placed in the solder receiving part 23 first, and then the connector 2 and the end cap 11 can be connected and assembled. After the two are assembled, the end cap 11 and the connector 2 can be furnace welded so that the solder ring melts and the solder fills the gap between the connector 2 and the end cap 11 that needs to be welded, so that the connector 2 and the end cap 11 are welded and fixed.

[0055] Since the annular portion 22 is located on the circumferential outer side of the solder receiving portion 23, the solder will flow circumferentially after melting to fill the gap that needs to be welded between the joint 2 and the end cap portion 11. Theoretically, if there is still solder remaining after the gap is filled, it will rise along the height direction of the joint 2 on the outer surface of the joint 2. Compared with the situation in the prior art where the solder immediately rises along the height direction of the joint 2 after melting, it can reduce the waste of solder and is more environmentally friendly.

[0056] In addition, after the furnace welding of joint 2 and end cap 11 is completed, joint 2 is usually subjected to a spraying process, such as heating the spraying material powder to melt it and then spraying it on the outer surface of joint 2 to form a coating on the surface of joint 2, so as to reduce the occurrence of corrosion or rust of joint 2. Coating adhesion refers to the bonding strength between the coating and the sprayed object, which is one of the basic factors for judging whether the coating is qualified. Good coating adhesion can prolong the time of coating peeling and increase the life of the coating.

[0057] One of the factors affecting the adhesion of spray coating is the roughness of the surface of the object being sprayed. The coating material can bond with the raised and recessed surfaces of the object being sprayed, which can increase the adhesion of the coating.

[0058] However, if a large amount of solder adheres to the outer surface of the connector 2 during welding of the connector 2 and the end cap 11, it will reduce the surface roughness of the outer surface of the connector 2, decrease the coating adhesion, and make the coating more prone to peeling off, thus affecting the life of the connector. The drying filter of this application can reduce the amount of solder adhering to the outer surface of the connector 2, thereby relatively extending the product life.

[0059] In this embodiment, the end cap portion 11 includes an end cap hole portion 114, which penetrates the upper and lower surfaces of the end cap portion 11. The connector 2 includes an insertion portion 24, which extends into the end cap hole portion 114. Before welding the connector 2 and the end cap portion 11, the connector 2 and the end cap portion 11 can be pre-connected through the insertion portion 24 and the end cap hole portion 114, for example, the insertion portion 24 and the end cap hole portion 114 can be transitionally fitted or clearance fitted.

[0060] Please refer to Figure 9 In this embodiment, the inner wall of the solder receiving portion 23 and the outer wall of the extension portion 24 are approximately coplanar, meaning there is no obvious transition between them. When the solder in the solder receiving portion 23 melts, the solder can flow into the gap between the extension portion 24 and the end cap hole portion 114 more quickly, thereby achieving welding between the extension portion 24 and the end cap hole portion 114, increasing the welding area and improving the welding strength.

[0061] Of course, it can also be configured such that the inner wall of the solder receiving part 23 and the outer wall of the extension part 24 are not coplanar, and a step part (not shown in the figure) is provided between them. When the solder in the solder receiving part 23 melts, it will first fill the gap between the step part and the end cap part 11, and then flow into the gap between the extension part 24 and the end cap hole part 114.

[0062] In this embodiment, a force-bearing part 25 is provided closer to the end cap part 11 than the threaded part 21. The outer surface of the force-bearing part 25 is usually configured as a regular hexagonal cross-section. When the operator needs to connect or disassemble the dryer filter with other components by threads, a wrench can be placed in the force-bearing part 25 to tighten or loosen the threads at the same time.

[0063] At this time, because the force-bearing part 25 is subjected to a large force from tools such as wrenches when the workers perform tightening, disassembly and other operations, the coating adhesion of the outer surface of the force-bearing part 25 is also required to be high. Ideally, before the spraying process, the solder is not attached to the outer surface of the force-bearing part 25 at all.

[0064] In this embodiment, the outer surface of the connector 2 includes a first outer edge segment 2a, a second outer edge segment 2b, and a third outer edge segment 2c. The first outer edge segment 2a is closer to the end cap 11 than the second outer edge segment 2b, and the second outer edge segment 2b is closer to the end cap 11 than the third outer edge segment 2c. The second outer edge segment 2b connects the first outer edge segment 2a and the third outer edge segment 2c. Furthermore, the distance between the third outer edge segment 2c and the center of the connector 2 is greater than the distance between the first outer edge segment 2a and the center of the connector 2. That is, in the plane containing the cross-section of the connector 2, the orthographic projection of the first outer edge segment 2a along the plane is located within the orthographic projection of the third outer edge segment 2c along the plane. The third outer edge segment 2c is the outer surface of the force-bearing part 25.

[0065] The second outer edge segment 2b can be perpendicular to the center of the connector 2, or the diameter of the second outer edge segment 2b can gradually increase along the direction from the first outer edge segment 2a to the third outer edge segment 2c. With the above arrangement, the solder needs to flow through the first outer edge segment 2a to the second outer edge segment 2b before flowing to the third outer edge segment 2c. This structure can reduce the continuity of capillary effect, thereby reducing the amount of solder flowing to the third outer edge segment 2c (the outer surface of the force-bearing part), improving the coating adhesion between the coating and the connector 2 at the third outer edge segment 2c, and extending the product life.

[0066] Furthermore, the connector 2 of this application is configured such that the surface roughness of the third outer edge segment 2c is greater than the surface roughness of the second outer edge segment 2b and the roughness of the first outer edge segment 2a. By reducing the roughness of the first outer edge segment 2a and the second outer edge segment 2b, the capillary effect of the liquid solder can be reduced, while increasing the roughness of the third outer edge segment 2c further enhances the coating adhesion between the coating and the connector 2 at the third outer edge segment 2c.

[0067] The working principle of this dryer filter is described below for reference. Figure 2 When refrigerant flows into the dryer filter from connector 2, the second valve plate 432 on the left side is opened under the action of refrigerant pressure. When the refrigerant pressure is high, the second valve plate 432 can abut against the filter element contact part 32 of the filter element 3, and the second valve plate 432 reaches the maximum opening position. The first valve plate 431 cannot deflect towards the filter element 3 due to the action of the contact part 421, and the first valve port 411 remains closed.

[0068] Now attached Figure 3The one-way valve assembly 4 on the right is described below. Refrigerant flows into the gap between the cylindrical section 1 and the filter element 3. Due to the pressure difference, the refrigerant in the gap between the cylindrical section 1 and the filter element 3 enters the gaps of the molecular sieve inside the filter element 3 from the outer wall of the filter element 3. During this process, the filter element 3 can adsorb moisture in the refrigerant, and impurities in the refrigerant are also retained in the gaps of the molecular sieve due to the filtration effect of the filter element 3. The second valve plate 432 is deflected towards the main component 41 by the pressure of the refrigerant. However, due to the resistance of the main component 41, it cannot open the second valve port 4121, and the second valve port 4121 remains closed. The refrigerant that passes through the filter element 3 and enters the filter element hole 31 exerts a force on the first valve plate 431 to open the first valve port 411. The first valve plate 431 is opened by this force. When the refrigerant pressure is high, the first valve plate 431 deflects at a large angle and can resist the baffle 44, allowing the first valve plate 431 to reach its maximum open position. The refrigerant flows out from the dryer filter through the first valve port 411.

[0069] It is worth noting that the offsetting described in this application includes direct offsetting and indirect offsetting, and the fixed connection described in this application includes direct fixed connection and indirect fixed connection.

[0070] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A container for refrigeration, comprising a cap portion (11), a joint (2) and a filter element (3), characterized in that, The joint (2) includes a ring portion (22) and a solder receiving portion (23) recessed relative to the ring portion (22) in a direction away from the end cover portion (11), the solder receiving portion (23) being further away from the center of the joint (2) than the ring portion (22), and the joint (2) and the end cover portion (11) being filled with solder; The end cover portion (11) is provided with a one-way valve assembly (4), the one-way valve assembly (4) including a main body part (41), a valve plate (43), and a support part (42); the main body part (41) is generally in the form of a plate structure, including a first valve port portion (411) and a second valve port portion (412), the first valve port portion (411) and the second valve port portion (412) being in the form of through holes, the first valve port portion (411) being generally located at the center of the main body part (41), and the second valve port portion (412) being in a plurality of numbers and being generally located outside the first valve port portion (411); the valve plate (43) is generally in the form of a sheet structure, including a first valve plate (431), a second valve plate (432), and a valve plate connecting portion (433), the valve plate connecting portion (433) being connected to a portion of the circumferential outer edge of the first valve plate (431), and when the first valve plate (431) is subjected to a force, the first valve plate (431) can rotate relative to the valve plate connecting portion (433) with the portion connected to the valve plate connecting portion (433) as the fulcrum; a portion of the circumferential outer edge of the valve plate connecting portion (433) is connected to a portion of the circumferential outer edge of the second valve plate (432), and when the second valve plate (432) is subjected to a force, the second valve plate (432) can rotate relative to the valve plate connecting portion (433) with the portion connected to the valve plate connecting portion (433) as the fulcrum; the valve plate (43) is fixedly connected to the main body part (41), the first valve plate (431) is arranged correspondingly to the first valve port portion (411), and the second valve plate (432) is arranged correspondingly to the second valve port portion (412); The filter element (3) is provided with a filter element hole portion (31) passing through the center thereof, the support part (42) includes an abutting portion (421) and an insertion portion (422), at least part of the insertion portion (422) is located in the filter element hole portion (31), the insertion portion (422) can abut against the filter element hole portion (31), the abutting portion (421) abuts against the filter element (3), and the support part (42) is provided with a through hole portion, the space in the through hole portion being in communication with the space in the filter element hole portion (31); The filter element (3) includes a filter element abutting portion (32) which can abut against the second valve plate (432), and the cross section of the filter element abutting portion (32) is in the form of an inclined surface, the inner diameter of which gradually increases from the end of the filter element (3) to the direction of the side wall of the filter element (3).

2. The refrigeration container according to claim 1, characterized in that The end cover part (11) comprises an end cover hole part (114) penetrating the upper and lower surfaces of the end cover part (11), the joint (2) comprises a protruding part (24) protruding into the end cover hole part (114), and there is solder between the protruding part (24) and the end cover hole part (114).

3. The refrigeration container according to claim 2, wherein The inner side wall surface of the solder accommodating part (23) is arranged substantially coplanar with the outer side wall surface of the protruding part (24), or the inner side wall surface of the solder accommodating part (23) is arranged non-coplanar with the outer side wall surface of the protruding part (24), a step part is arranged between the solder accommodating part (23) and the protruding part (24), and there is solder between the step part and the end cover part (11).

4. The refrigeration container according to claim 1, wherein The outer surface of the joint (2) comprises a first outer edge section (2a), a second outer edge section (2b), and a third outer edge section (2c), the first outer edge section (2a) is closer to the end cover part (11) than the second outer edge section (2b), the second outer edge section (2b) is closer to the end cover part (11) than the third outer edge section (2c), the second outer edge section (2b) connects the first outer edge section (2a) and the third outer edge section (2c), and in the plane where the cross section of the joint (2) is located, the orthogonal projection of the first outer edge section (2a) along the plane is located within the orthogonal projection of the third outer edge section (2c) along the plane.

5. The refrigeration container according to claim 4, wherein The second outer edge section (2b) is arranged vertically relative to the center of the joint (2), or the diameter of the second outer edge section (2b) gradually increases along the direction from the first outer edge section (2a) to the third outer edge section (2c).

6. The container according to any one of claims 4 or 5, wherein The joint (2) further comprises a force receiving part (25) and a threaded part (21), the force receiving part (25) is closer to the end cover part (11) than the threaded part (21), and the outer surface of the force receiving part (25) is the third outer edge section (2c).

7. The container according to any one of claims 4 or 5, wherein The surface roughness of the third outer edge section (2c) is greater than the surface roughness of the second outer edge section (2b), and the surface roughness of the third outer edge section (2c) is greater than the surface roughness of the first outer edge section (2a).

8. The refrigeration container according to claim 6, wherein The orthogonal projection of the third outer edge section (2c) along the plane of the cross section of the joint is an outer regular hexagon, and the outer surface of the joint (2) is covered with a coating.

9. The refrigeration container according to claim 6, wherein The threaded part (21) is an internal thread or an external thread, and the threaded part (21) is threadedly connected with a connecting pipe.

10. The container according to any one of claims 1 to 5, 8 to 9, wherein The refrigeration container is a drying filter, a liquid accumulator, an oil separator, or a gas-liquid separator.

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