Valve element assembly, one-way valve and refrigeration equipment

Abstract

The utility model discloses a valve element assembly, a one-way valve and refrigeration equipment, and relates to the technical field of refrigeration equipment, the valve element assembly comprises a valve cover, a valve element and an elastic piece, the valve cover is used for being connected with a valve body of the one-way valve, the valve cover is provided with a first containing groove, the valve element comprises a sliding section and a plugging section, and the sliding section is provided with a second containing groove. The sliding section is connected into the first containing groove in a sliding mode, the blocking section is used for opening or blocking a valve port of the valve body, and the sliding section is elastically connected into the first containing groove through the elastic piece; the length of the sliding section in the axial direction is h1, the outer diameter of the end, away from the sliding section, of the plugging section is r, and h1 / r is larger than or equal to 0.5 and smaller than or equal to 1.5. According to the technical scheme, the structural size and the installation size of the valve element assembly are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a valve core component, a one-way valve and refrigeration equipment. Background Art

[0002] In air-conditioning systems, one-way valves are very common components that realize the functions of forward flow and reverse cutoff, and work with other valve types to complete the switching of different system working modes. In addition, since the valve core components of the one-way valve are mostly installed in integrated modules, due to limited installation space, especially the need to provide a larger valve core component diameter on the low-pressure side, the overall size of the valve core component and the installation space become larger. Utility Model Content

[0003] The main purpose of the utility model is to provide a valve core component and a one-way valve, aiming at reducing the structural size and installation size of the valve core component.

[0004] To achieve the above purpose, the valve core assembly proposed by the utility model includes:

[0005] A valve cover, the valve cover is used to be connected to the valve body of the one-way valve, and the valve cover is provided with a first receiving groove;

[0006] A valve core, the valve core comprising a sliding section and a blocking section, the sliding section being slidably connected in the first receiving groove, and the blocking section being used to open or block the valve port of the valve body; and

[0007] An elastic member, through which the sliding section is elastically connected to the first receiving groove;

[0008] The length of the sliding section along the axial direction is h1, the outer diameter of the end of the blocking section away from the sliding section is r, and 0.5≤h1 / r≤1.5.

[0009] In one embodiment, the maximum distance between the bottom wall of the first receiving groove and the end surface of the sliding section is H1, and 0.28≤H1 / r≤0.8.

[0010] In one embodiment, the total length of the valve core along the axial direction of the sliding section is h2, and 0.5≤h1 / h2≤0.9.

[0011] In one embodiment, a second receiving groove is provided at one end of the sliding section facing the first receiving groove, the elastic member is a spring, both ends of the spring are respectively fixed on the groove walls of the first receiving groove and the second receiving groove, and the spring is at least partially received in the second receiving groove.

[0012] In one embodiment, the length of the second receiving groove along the axial direction of the sliding section is h3, the maximum distance between the bottom wall of the first receiving groove and the end surface of the sliding section is H1, and 0.2≤h3 / H1≤2.

[0013] In one embodiment, a limiting protrusion is provided on the outer circumference of the sliding section, a limiting groove is provided on the groove wall of the first receiving groove, and the sliding section is slidably connected in the first receiving groove through the cooperation of the limiting protrusion and the limiting groove.

[0014] In one embodiment, the valve core assembly also includes a rivet, which is connected to the end surface of the valve cover and is arranged near the opening of the first receiving groove. The rivet has an initial state and a riveted state. In the initial state, the rivet extends along the axial direction of the sliding section; in the riveted state, the rivet is riveted at the opening of the first receiving groove to limit the limiting protrusion from sliding out of the first receiving groove.

[0015] In one embodiment, the length of the first receiving groove along the axial direction of the sliding section is H2, the maximum distance between the limiting protrusion and the end face of the sliding section along the axial direction of the sliding section is h4, and in the initial state, the length of the rivet along the axial direction of the sliding section is H3, 1.2H1≤h4+H1≤H2+H3.

[0016] In one embodiment, 0.2≤H3 / H2≤1.

[0017] In one embodiment, 1≤H3≤4.5.

[0018] The utility model also provides a one-way valve, comprising the valve core assembly as described above.

[0019] The utility model also provides a refrigeration device, comprising the one-way valve as described above.

[0020] The valve core assembly in the technical solution of the utility model includes a valve cover, a valve core and an elastic member. The valve cover is used to connect with the valve body of the one-way valve. The valve cover is provided with a first receiving groove. The valve core includes a sliding section and a blocking section. The sliding section is slidably connected in the first receiving groove. The blocking section is used to open or block the valve port of the valve body. The sliding section is elastically connected in the first receiving groove through the elastic member; wherein, the length of the sliding section along the axial direction is h1, and the outer diameter of the blocking section away from the sliding section is r, 0.5≤h1 / r≤1.5. The technical solution of the utility model optimizes the size of the valve core assembly by reasonably setting the length of the sliding section along the axial direction and the outer diameter of the blocking section away from the sliding section, thereby reducing the structural size of the valve core assembly, thereby reducing the installation space when the valve core assembly is installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0022] Figure 1 Schematic structural diagram of an embodiment of the one-way valve provided by the present invention;

[0023] Figure 2 For Figure 1 Schematic structural diagram of the valve core assembly in

[0024] Figure 3 For Figure 2 Schematic structural diagram of the valve core in

[0025] Figure 4 For Figure 2 Schematic structural diagram of the valve cover in

[0026] Explanation of the reference numerals in the drawings:

[0027] 10. Valve body; 11. Valve port; 12. First flow channel hole; 13. Second flow channel hole; 20. Valve cover; 21. First receiving groove; 211. Limit groove; 30. Valve core; 31. Sliding section; 311. Limit protrusion; 312. Second receiving groove; 32. Sealing section; 321. Sealing groove; 40. Elastic member; 50. Riveting member; 60. Sealing ring.

[0028] The realization, functional features and advantages of the purpose of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if the descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] Referring to Figures 1 to 4 , the present utility model provides a spool 30 assembly, comprising:

[0033] A valve cover 20, which is used to connect with the valve body 10 of the one-way valve. A first receiving groove 21 is provided on the valve cover 20;

[0034] A spool 30, which includes a sliding section 31 and a blocking section 32. The sliding section 31 is slidably connected in the first receiving groove 21, and the blocking section 32 is used to open or block the valve port 11 of the valve body 10; and

[0035] An elastic member 40, and the sliding section 31 is elastically connected in the first receiving groove 21 through the elastic member 40;

[0036] Wherein, the length of the sliding section 31 in the axial direction is h1, and the outer diameter of the end of the blocking section 32 departing from the sliding section 31 is r, and 0.5 ≤ h1 / r ≤ 1.5.

[0037] The valve core 30 assembly in the technical solution of the utility model includes a valve cover 20, a valve core 30 and an elastic member 40. The valve cover 20 is used to connect with the valve body 10 of the one-way valve. The valve cover 20 is provided with a first receiving groove 21. The valve core 30 includes a sliding section 31 and a blocking section 32. The sliding section 31 is slidably connected in the first receiving groove 21. The blocking section 32 is used to open or block the valve port 11 of the valve body 10. The sliding section 31 is elastically connected in the first receiving groove 21 through the elastic member 40; wherein, the length of the sliding section 31 along the axial direction is h1, and the outer diameter of the end of the blocking section 32 away from the sliding section 31 is r, 0.5≤h1 / r≤1.5. The technical solution of the utility model optimizes the size of the valve core 30 assembly by reasonably setting the length of the sliding section 31 along the axial direction and the outer diameter of the end of the blocking section 32 away from the sliding section 31, thereby reducing the structural size of the valve core 30 assembly, thereby reducing the installation space of the valve core 30 assembly when installing.

[0038] Wherein, h1 is the length of the sliding section 31 in the axial direction, and r is the outer diameter of the end of the blocking section 32 away from the sliding section 31; if h1 / r>1.5, it means that h1 is too large. If the length of the sliding section 31 in the axial direction is too long, the blocking section 32 of the valve core 30 will easily shake during the sliding process, thereby reducing the stability of the valve core 30 during movement, and at the same time, the length of the valve core 30 assembly in the axial direction of the sliding section 31 will be too large, thereby increasing the axial size of the valve core 30 assembly, which is not conducive to the miniaturization of the valve core 30 assembly. If h1 / r<0.5, it means that r is too large and h1 is too small, thereby making the circumferential length of the sliding section 31 too small, thereby making it easy for a gap to form between the blocking section 32 and the valve port 11, thereby easily causing product leakage, reducing the sealing effect of the blocking section 32, and thus affecting the stability and reliability of the product. Therefore, by setting the ratio of h1 to r to 0.5≤h1 / r≤1.5, the size of the valve core 30 assembly is optimized, thereby reducing the structural size and installation size of the valve core 30 assembly. At the same time, the value range of 0.5≤h1 / r≤1.5 is relatively large, which makes the processing accuracy requirement lower, thereby facilitating the production and processing of the valve core 30 assembly, thereby reducing the production and manufacturing cost of the valve core 30 assembly.

[0039] The spool 30 assembly in the technical solution of the present utility model can be sold separately. The valve body 10 of the one-way valve belongs to the product of the client. That is, after the client purchases the spool 30 assembly, it can be installed into the valve body 10 structure of its own product by itself, thereby forming a one-way valve structure. In the prior art solution, the one-way valve comes with a valve seat. The valve seat is the part where the spool 30 makes sealing contact to close the valve. The valve seat and the valve body 10 are sealed and connected through a sealing member. In the technical solution of the present utility model, the valve seat structure is cancelled, and the spool 30 is directly in sealing abutment with the valve body 10 of the client, thereby further reducing the size of the spool 30 assembly and being beneficial to the miniaturization of the spool 30 assembly.

[0040] Further, a sealing groove 321 is provided on the outer peripheral surface of the plugging section 32. A sealing ring 60 is sleeved in the sealing groove 321. The plugging section 32 is sealingly connected to the valve port 11 through the sealing ring 60, thereby increasing the sealing effect between the plugging section 32 and the valve port 11. Of course, in other embodiments, a layer of soft materials such as silica gel or rubber can also be provided on the outside of the plugging section 32 to improve the sealing effect between the plugging section 32 and the valve port 11.

[0041] Specifically, the maximum distance between the bottom wall of the first receiving groove 21 and the end face of the sliding section 31 is H1, and 0.28 ≤ H1 / r ≤ 0.8. H1 is also the movement stroke when the spool 30 slides. If H1 / r > 0.8, it means that H1 is too large, which will increase the length of the valve cover 20 in the axial direction of the sliding section 31, and then increase the length of the spool 30 assembly in the axial direction, and then increase the installation size of the spool 30 assembly and is not conducive to the miniaturization of the spool 30 assembly. If H1 / r < 0.28, it means that H1 is too small, so that the movement stroke of the spool 30 becomes shorter. It can be understood that the operating principle of the spool 30 assembly is that the water flow pressure pushes the spool 30 to move, so that the elastic member 40 is compressed, so that the water can only flow unidirectionally. Therefore, if the movement stroke of the spool 30 is too short, it will instead cause the water channel flowing out of the valve port 11 to be too small, thereby reducing the water flow rate. Therefore, by setting 0.28 ≤ H1 / r ≤ 0.8, the ratio of H1 and r is reasonably set, and then the size of the spool 30 assembly is optimized, and then the structural size and installation size of the spool 30 assembly are reduced; at the same time, the value range of 0.28 ≤ H1 / r ≤ 0.8 is relatively large, so that the processing accuracy requirement for it is relatively low, which is convenient for the production and processing of the spool 30 assembly, and then reduces the production and manufacturing cost of the spool 30 assembly.

[0042] Further, the total length of the valve core 30 in the axial direction of the sliding section 31 is h2, and 0.5 ≤ h1 / h2 ≤ 0.9. If h1 / h2 > 0.9, it means that the length of the sliding section 31 in the axial direction accounts for a relatively large proportion, resulting in an overly long length of the sliding section 31. This will cause the blocking section 32 to easily wobble during the sliding of the valve core 30, thereby reducing the stability of the valve core 30 during movement. At the same time, it will also cause the length of the valve core 30 assembly in the axial direction of the sliding section 31 to be too large, further increasing the size of the valve core 30 assembly in the axial direction and being unfavorable for the miniaturization of the valve core 30 assembly. When h1 / h2 < 0.5, it means that the length of the sliding section 31 in the axial direction accounts for a relatively small proportion, resulting in an overly small water passage flowing out of the valve port 11, thereby reducing the water flow rate.

[0043] In one embodiment, a second receiving groove 312 is provided at one end of the sliding section 31 facing the first receiving groove 21. The elastic member 40 is a spring, and the two ends of the spring are respectively fixed to the groove walls of the first receiving groove 21 and the second receiving groove 312. At least part of the spring is received in the second receiving groove. It can be understood that a spring has a maximum compression amount. Exceeding the predetermined compression amount will cause the spring to be damaged and unable to operate normally. Therefore, by providing the second receiving groove 312, on the one hand, it can prevent the spring from being overcompressed, thereby increasing the service life of the spring. On the other hand, it also reduces the size of the valve core 30 assembly in the circumferential direction, and thus is favorable for the miniaturization of the valve core 30 assembly.

[0044] Specifically, the length of the second receiving groove 312 in the axial direction of the sliding section 31 is h3, and the maximum distance between the bottom wall of the first receiving groove 21 and the end face of the sliding section 31 is H1, and 0.2 ≤ h3 / H1 ≤ 2. If h3 / H1 > 2, it means that H1 is too small and h3 is too large, resulting in an overly long spring length. This will cause the wire diameter of the spring to be too small under the required force value, which is unfavorable for the reliability of the spring. As a result, the water passage flowing out of the valve port 11 is too small, thereby reducing the water flow rate. If h3 / H1 < 0.2, it means that H1 is too large, which will increase the length of the valve cover 20 in the axial direction of the sliding section 31, further increasing the length of the valve core 30 assembly in the axial direction, and thus increasing the installation size of the valve core 30 assembly and being unfavorable for the miniaturization of the valve core 30 assembly.

[0045] In one embodiment, a limiting protrusion 311 is provided on the outer peripheral surface of the sliding section 31, and a limiting groove 211 is provided on the groove wall of the first receiving groove 21. The sliding section 31 is slidably connected to the first receiving groove 21 through the cooperation of the limiting protrusion 311 and the limiting groove 211. By providing the limiting protrusion 311 and the limiting groove 211, the rotation of the valve core 30 in the circumferential direction is restricted, thereby improving the stability and reliability of the valve core 30 during sliding.

[0046] In one embodiment, the valve core 30 assembly further includes a riveting member 50, which is connected to the end face of the valve cover 20 and is disposed near the opening of the first receiving groove 21. The riveting member 50 has an initial state and a riveting state. In the initial state, the riveting member 50 extends along the axial direction of the sliding section 31; in the riveting state, the riveting member 50 is riveted to the opening of the first receiving groove 21 to limit the limiting protrusion 311 from sliding out of the first receiving groove 21. By providing the riveting member 50, the valve core 30 is restricted from sliding out of the first receiving groove 21. At the same time, the fixing method of the riveting member 50 is simple. The user only needs to align the limiting protrusion 311 and the limiting groove 211 and insert them first, and then rivet the riveting member 50, thus completing the processing of the valve core 30 assembly, thereby reducing the production and manufacturing cost of the valve core 30 assembly.

[0047] Specifically, the length of the first receiving groove 21 in the axial direction of the sliding section 31 is H2, the maximum distance between the limiting protrusion 311 and the end face of the sliding section 31 in the axial direction of the sliding section 31 is h4. In the initial state, the length of the riveting member 50 in the axial direction of the sliding section 31 is H3, and 1.2H1 ≤ h4 + H1 ≤ H2 + H3. If h4 + H1 > H2 + H3, it means that the limiting protrusion 311 contacts the riveting member 50, causing the riveting member 50 to return to the initial state, thereby causing the valve core 30 assembly to disengage from the riveting member 50. If h4 + H1 < 1.2H1, it means that the distance of h4 is too small, which in turn leads to too small a length of the limiting protrusion 311 in the axial direction of the sliding section 31, resulting in the limiting effect of the limiting protrusion 311 not meeting expectations and the limiting protrusion 311 being prone to breakage, etc., thereby affecting the stability and reliability of the valve core 30.

[0048] Further, 0.2 ≤ H3 / H2 ≤ 1. If H3 / H2 > 1, it means that H2 is too small, resulting in too small a sliding stroke of the valve core 30, causing the limiting protrusion 311 on the valve core 30 to contact the riveting member 50 in advance, resulting in a shorter sliding stroke of the valve core 30, a too small water passage flowing out of the valve port 11, and thus reducing the water flow rate. If H3 / H2 < 0.2, it means that H2 is too large, increasing the length of the valve cover 20 in the axial direction, which is not conducive to the miniaturization of the valve core 30 assembly.

[0049] Further, 1 ≤ H3 ≤ 4.5. If H3 > 4.5, it will cause too small a gap between the riveting member 50 and the outer peripheral wall of the sliding section 31 after riveting, which will affect the normal operation of the valve core 30, thereby reducing the stability and reliability of the valve core 30 during operation. If H3 < 1, it means that the riveting member 50 is short, making the riveting member 50 unable to play a reliable limiting and fixing role on the limiting protrusion 311, which will also reduce the stability and reliability of the valve core 30 during operation.

[0050] The present utility model further provides a check valve, which includes a valve body 10 and a spool 30 assembly. The valve body 10 has a valve cavity with a valve port 11. The valve body 10 is provided with a first flow passage hole 12 and a second flow passage hole 13 communicating with the valve cavity. The spool 30 assembly is arranged in the valve cavity. The valve cover 20 is hermetically connected to the valve body 10. The piston portion of the spool 30 is hermetically abutted against the valve port 11 under the action of the elastic member 40. The specific structure of the spool 30 assembly refers to the above-mentioned embodiment. Since this check valve adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0051] The present utility model further provides a refrigeration device, which includes a check valve. The specific structure of the check valve refers to the above-mentioned embodiment. Since this refrigeration device adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0052] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A spool assembly, characterized in that, Comprising: A valve cover for connecting with the valve body of a check valve, and a first receiving groove is provided on the valve cover; A valve core, the valve core includes a sliding section and a blocking section, the sliding section is slidably connected in the first receiving groove, and the blocking section is used to open or block the valve port of the valve body; And An elastic member, the sliding section is elastically connected in the first receiving groove through the elastic member; Wherein, the length of the sliding section in the axial direction is h1, the outer diameter of the end of the blocking section away from the sliding section is r, and 0.5 ≤ h1 / r ≤ 1.

5.

2. The spool assembly according to claim 1, characterized in that, The maximum distance between the bottom wall of the first receiving groove and the end face of the sliding section is H1, and 0.28 ≤ H1 / r ≤ 0.

8.

3. The spool assembly according to claim 1, characterized in that, The total length of the valve core in the axial direction of the sliding section is h2, and 0.5 ≤ h1 / h2 ≤ 0.

9.

4. The spool assembly according to claim 1, wherein, A second receiving groove is provided at one end of the sliding section facing the first receiving groove, the elastic member is a spring, and the two ends of the spring are respectively fixed on the groove walls of the first receiving groove and the second receiving groove, and at least part of the spring is received in the second receiving groove.

5. The spool assembly according to claim 4, characterized in that, The length of the second receiving groove in the axial direction of the sliding section is h3, the maximum distance between the bottom wall of the first receiving groove and the end face of the sliding section is H1, and 0.2 ≤ h3 / H1 ≤ 2.

6. The spool assembly according to claim 1, characterized in that, A limiting protrusion is provided on the outer peripheral surface of the sliding section, and a limiting groove is provided on the groove wall of the first receiving groove. The sliding section is slidably connected in the first receiving groove through the cooperation of the limiting protrusion and the limiting groove.

7. The spool assembly according to claim 6, characterized in that, The valve core assembly further includes a riveting member, the riveting member is connected to the end face of the valve cover and is arranged near the opening of the first receiving groove. The riveting member has an initial state and a riveting state. In the initial state, the riveting member extends along the axial direction of the sliding section; in the riveting state, the riveting member is riveted to the opening of the first receiving groove to limit the limiting protrusion from sliding out of the first receiving groove.

8. The spool assembly according to claim 7, wherein, The length of the first receiving groove in the axial direction of the sliding section is H2, the maximum distance between the limiting protrusion and the end face of the sliding section in the axial direction of the sliding section is h4. In the initial state, the length of the riveting member in the axial direction of the sliding section is H3, and 1.2H1 ≤ h4 + H1 ≤ H2 + H3.

9. The spool assembly according to claim 8, wherein, 0.2 ≤ H3 / H2 ≤ 1.

10. The spool assembly according to claim 8, wherein, 1≤H3≤4.5。 11. A one-way valve, characterized in that, Comprising a valve body and the valve core assembly according to any one of claims 1 to 10.

12. A refrigeration device, characterized in that, Comprising the check valve according to claim 11.

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