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 first containing groove in the axial direction of the sliding section is h, the outer diameter of the sliding section is r1, the diameter of the first containing groove is R1, r1 / h is larger than or equal to 0.3 and smaller than or equal to 1.22, and R1-r1 is larger than or equal to 0.03 and smaller than or equal to 0.4. 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 assembly, a check valve and a refrigeration equipment. Background Art

[0002] In an air conditioning system, a check valve is a very common component, which realizes the functions of forward flow and reverse cut-off, and jointly completes the switching of different system working modes with other valves. At present, most of the valve core assemblies of check valves are installed in an integrated module. Due to limited installation space, especially a larger valve core assembly diameter needs to be provided on the low-pressure side, which makes the overall size and installation space of the valve core assembly larger. Summary of the Utility Model

[0003] The main object of the utility model is to provide a valve core assembly, a check valve and a refrigeration equipment, aiming to reduce the structural size and installation size of the valve core assembly.

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

[0005] A valve cover for connecting with the valve body of the check valve, and a first receiving groove is provided on the valve cover;

[0006] A valve core including 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

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

[0008] Wherein, the length of the first receiving groove along the axial direction of the sliding section is h, the outer diameter of the sliding section is r1, the diameter of the first receiving groove is R1, and 0.3≤r1 / h≤1.22, 0.03≤R1 - r1≤0.4.

[0009] In an embodiment, 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.

[0010] In an embodiment, a plurality of limiting protrusions are arranged at intervals, and the maximum distance between two relatively arranged limiting protrusions along the radial direction of the sliding section is r2, and 0.8≤r2 - r1≤3.

[0011] In an embodiment, a plurality of limiting grooves are arranged at intervals, and the maximum distance between two relatively arranged limiting grooves along the radial direction of the sliding section is R2, and R1 - r1≤R2 - r2.

[0012] 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.

[0013] In one embodiment, in the initial state, the inner diameter of the rivet is R3, 0≤R3-R2≤0.8.

[0014] In one embodiment, the outer diameter of the end of the blocking section away from the sliding section is r3, and 1≤r3 / r1≤2.8.

[0015] In one embodiment, the outer diameter of the end of the valve cover located at the opening of the first receiving groove is R4, the outer diameter of the end of the blocking section away from the sliding section is r3, and 1≤R4 / r3≤2.5.

[0016] 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.

[0017] The utility model also provides a one-way valve, comprising a valve body and the valve core assembly as described above.

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

[0019] 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 first receiving groove along the axial direction of the sliding section is h, the outer diameter of the sliding section is r1, the diameter of the first receiving groove is R1, 0.3≤r1 / h≤1.22, 0.03≤R1-r1≤0.4; the technical solution of the utility model improves the stability of the valve core when sliding by reasonably setting the outer diameter of the sliding section, the diameter of the first receiving groove and the length of the first receiving groove along the axial direction of the sliding section, and also optimizes the size of the valve core assembly, thereby reducing the structural size of the valve core assembly, and thereby reducing the installation space of the valve core assembly when installing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 Structural schematic diagram of an embodiment of the one-way valve provided by the present invention;

[0022] Figure 2 For Figure 1 Structural schematic diagram of the valve core assembly in

[0023] Figure 3 For Figure 2 Structural schematic diagram of one perspective of the valve cover in

[0024] Figure 4 For Figure 2 Structural schematic diagram of the valve core in

[0025] Figure 5 For Figure 2 Structural schematic diagram of another perspective 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. Limiting groove; 30. Valve core; 31. Sliding section; 311. Limiting protrusion; 312. Second receiving groove; 32. Blocking section; 321. Sealing groove; 40. Elastic member; 50. Riveting member; 60. Sealing ring.

[0028] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the drawings. Detailed implementation manners

[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 utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture. If this specific posture changes, then the directional indications will also change accordingly.

[0031] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "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 scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. 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 3 , the present utility model provides a spool assembly, including:

[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, the spool 30 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, the sliding section 31 is elastically connected in the first receiving groove 21 through the elastic member 40;

[0036] Wherein, the length of the first receiving groove 21 in the axial direction of the sliding section 31 is h, the outer diameter of the sliding section 31 is r1, the diameter of the first receiving groove 21 is R1, 0.3 ≤ r1 / h ≤ 1.22, 0.03 ≤ R1 - r1 ≤ 0.4.

[0037] The spool assembly in the technical solution of the present utility model includes a valve cover 20, a spool 30, and an elastic member 40. The valve cover 20 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. The spool 30 includes a sliding section 31 and a blocking section 32. The sliding section 31 is slidably connected within 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 within the first receiving groove 21 through the elastic member 40. Among them, the length of the first receiving groove 21 in the axial direction of the sliding section 31 is h, the outer diameter of the sliding section 31 is r1, the diameter of the first receiving groove 21 is R1, and 0.3 ≤ r1 / h ≤ 1.22, 0.03 ≤ R1 - r1 ≤ 0.4. By reasonably setting the outer diameter of the sliding section 31, the diameter of the first receiving groove 21, and the length of the first receiving groove 21 in the axial direction of the sliding section 31 in the technical solution of the present utility model, the stability of the spool 30 during sliding is improved. At the same time, the dimensions of the spool assembly in the radial direction are optimized, thereby reducing the structural dimensions of the spool assembly, and further reducing the installation space during the installation of the spool assembly.

[0038] The spool 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 assembly, it can be directly installed into the valve body 10 structure of its own product to form 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 with which 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 contact with the valve body 10 of the client, thereby further reducing the size of the spool assembly and being beneficial to the miniaturization of the spool assembly.

[0039] Among them, when r1 / h > 1.22, it indicates that the outer diameter of the sliding section 31 is too large, thereby increasing the dimensions of the spool assembly in the radial direction of the sliding section 31, which is not conducive to the miniaturization of the spool assembly and increases the installation dimensions of the spool assembly. When r1 / h < 0.3, it indicates that the dimension of the first receiving groove 21 in the axial direction of the sliding section 31 is too large, thereby increasing the dimensions of the spool assembly in the axial direction of the sliding section 31, which is not conducive to the miniaturization of the spool assembly and increases the installation dimensions of the spool assembly. Therefore, by setting 0.3 ≤ r1 / h ≤ 1.22, the ratio of r1 and h is reasonably set, thereby optimizing the dimensions of the spool assembly, and further reducing the structural dimensions and installation dimensions of the spool assembly. At the same time, the value range of 0.3 ≤ r1 / h ≤ 1.22 is relatively large, so the processing accuracy requirements for it are relatively low, which is convenient for the production and processing of the spool assembly, and further reduces the production and manufacturing cost of the spool assembly.

[0040] Refer to Figures 3 to 5, Further, 0.03 ≤ R1 - r1 ≤ 0.4. If R1 - r1 > 0.4, it indicates that the gap between the outer peripheral wall of the sliding section 31 and the groove wall of the first receiving groove 21 is too large, so that the valve core 30 is prone to wobbling when sliding up and down, thereby reducing the stability and reliability of the valve core assembly during operation, and even easily causing the blocking portion of the valve core 30 to fail to accurately block the valve port 11. If R1 - r1 < 0.03, it indicates that the gap between the outer peripheral wall of the sliding section 31 and the groove wall of the first receiving groove 21 is too small, so that the sliding section 31 is prone to jamming or even blocking when the valve core 30 moves up and down, thus easily causing the valve core assembly to fail. Therefore, by reasonably setting the gap between the outer peripheral wall of the sliding section 31 and the groove wall of the first receiving groove 21 to be between 0.03 and 0.4, the stability and reliability of the valve core 30 during sliding are improved, and thus the service life of the valve core assembly is increased.

[0041] In an 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, and thus the stability and reliability of the valve core 30 during sliding are improved.

[0042] Specifically, a plurality of limiting protrusions 311 are provided at intervals, and the maximum distance between two relatively arranged limiting protrusions 311 in the radial direction of the sliding section 31 is r2, and 0.8 ≤ r2 - r1 ≤ 3. If r2 - r1 > 3, it indicates that the thickness of the limiting protrusion 311 in the radial direction of the sliding section 31 is too large, so that the thickness of the valve cover 20 needs to be increased, and thus the size of the valve core assembly in the radial direction is increased. If r2 - r1 < 0.8, it indicates that the thickness of the limiting protrusion 311 in the radial direction of the sliding section 31 is too small, so that the limiting effect of the limiting protrusion 311 on the valve core 30 in the circumferential direction is reduced, and thus the stability and reliability of the valve core assembly are reduced. Therefore, by reasonably setting the size of the limiting protrusion 311, the size of the valve core assembly is optimized, which is beneficial to the miniaturization of the valve core assembly while improving the stability and reliability of the valve core assembly.

[0043] Furthermore, a plurality of the limiting grooves 211 are provided at intervals, and the maximum distance between two relatively arranged limiting grooves 211 in the radial direction of the sliding section 31 is R2, and R1 - r1 ≤ R2 - r2. Among them, (R1 - r1) / 2 represents the clearance value between the first receiving groove and the sliding section 31; (R2 - r2) / 2 represents the clearance value between the limiting protrusion 311 and the limiting groove 211; R1 - r1 ≤ R2 - r2 means that the clearance value between the first receiving groove and the sliding section 31 is less than the clearance value between the limiting protrusion 311 and the limiting groove 211, that is, the sliding section 31 of the valve core 30 mainly plays a role of sliding and guiding, while the limiting protrusion 311 and the limiting groove 211 only play a role in preventing the valve core 30 from rotating circumferentially.

[0044] In an embodiment, the valve core assembly further includes a riveting part 50, the riveting part 50 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 part 50 has an initial state and a riveting state. In the initial state, the riveting part 50 extends along the axial direction of the sliding section 31; in the riveting state, the riveting part 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 part 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 part 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 part 50, thus completing the processing of the valve core assembly, thereby reducing the production and manufacturing cost of the valve core assembly.

[0045] Specifically, in the initial state, the inner diameter of the riveting part 50 is R3, and 0 ≤ R3 - R2 ≤ 0.8. If R3 - R2 < 0, it means that the riveting part 50 will cover part of the limiting groove 211, resulting in difficulty for the limiting protrusion 311 to be inserted into the corresponding limiting groove 211, thereby increasing the processing difficulty of the valve core assembly. If R3 - R2 > 0.8, it means that the distance between the riveting part 50 and the limiting groove 211 in the initial state is too large. In this case, the length of the riveting part 50 along the axial direction of the sliding section 31 needs to be increased. If the length of the riveting part 50 is too long, the structural strength of the riveting part 50 will be reduced, thereby reducing the stability and reliability of the valve core assembly. Therefore, by reasonably setting the size of the riveting part 50, on the one hand, it is convenient for the installation of the valve core 30, and on the other hand, the riveting strength of the riveting part 50 is improved, thereby improving the stability and reliability of the valve core assembly.

[0046] Furthermore, the outer diameter of the end of the blocking section 32 away from the sliding section 31 is r3, 1≤r3 / r1≤2.8. If r3 / r1>2.8, it means that r3 is too large, that is, the outer diameter of the blocking section 32 is too large, thereby increasing the radial size of the valve core assembly; if r3 / r1<1, it means that the diameter of the sliding section 31 is too large, thereby increasing the radial size of the valve core assembly; therefore, by reasonably setting the diameters of the blocking section 32 and the sliding section 31, the size of the valve core assembly is optimized, thereby reducing the size of the valve core assembly, which is conducive to the miniaturization of the valve core assembly.

[0047] Furthermore, a sealing groove 321 is provided on the outer peripheral surface of the blocking section 32, and a sealing ring 60 is sleeved in the sealing groove 321. The blocking section 32 is sealed and connected to the valve port 11 through the sealing ring 60, thereby increasing the sealing effect between the blocking section 32 and the valve port 11. Of course, in other embodiments, a layer of soft material such as silicone or rubber may be provided on the outside of the blocking section 32, thereby increasing the sealing effect between the blocking section 32 and the valve port 11.

[0048] Specifically, the outer diameter of the end of the valve cover 20 at the opening of the first receiving groove 21 is R4, and the outer diameter of the end of the blocking section 32 away from the sliding section 31 is r3, 1≤R4 / r3≤2.5. If R4 / r3<1, it means that the outer diameter of the end of the blocking section 32 away from the sliding section 31 is larger than the outer diameter of the end of the valve cover 20 at the opening of the first receiving groove 21. On the one hand, the radial dimension of the valve core assembly will be increased, and on the other hand, the blocking section 32 will be too large, which will cause the valve core 30 to shake easily when sliding. Then it will affect the stability of the valve core 30 when sliding. If R4 / r3>2.5, the size of the valve cover 20 will be too large, that is, part of the space will be wasted, thereby increasing the size of the valve core assembly, which is not conducive to the miniaturization of the valve core assembly.

[0049] In one embodiment, the sliding section 31 is provided with a second receiving groove 312 at one end facing the first receiving groove 21, and 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, and the spring is at least partially received in the second receiving groove. It can be understood that the spring has a maximum compression amount, and 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, the spring can be prevented from being over-compressed, thereby increasing the service life of the spring, and on the other hand, the size of the valve core assembly in the circumferential direction is reduced, which is conducive to the miniaturization of the valve core assembly.

[0050] The present utility model further provides a check valve, which includes a valve body 10 and a spool 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 assembly is arranged in the valve cavity. The valve cover 20 is sealingly connected to the valve body 10. The piston portion of the spool 30 is sealingly abutted against the valve port 11 under the action of the elastic member 40. The specific structure of the spool assembly refers to the above embodiments. Since this check valve adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein 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 embodiments. Since this refrigeration device adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein 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 accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the technical concept of the present utility model, or any 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, include: 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; 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; as well as An elastic member, through which the sliding section is elastically connected to the first receiving groove; The length of the first receiving groove along the axial direction of the sliding section is h, the outer diameter of the sliding section is r1, the diameter of the first receiving groove is R1, 0.3≤r1 / h≤1.22, 0.03≤R1-r1≤0.

4.

2. The spool assembly according to claim 1, wherein, A limiting protrusion is provided on the outer circumferential surface 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.

3. The spool assembly according to claim 2, characterized in that, The limiting protrusions are arranged in plurality at intervals, wherein the maximum distance between two limiting protrusions arranged opposite to each other along the radial direction of the sliding section is r2, and 0.8≤r2-r1≤3.

4. The spool assembly according to claim 3, characterized in that, The limiting grooves are arranged in plurality at intervals, wherein the maximum distance between two limiting grooves arranged opposite to each other along the radial direction of the sliding section is R2, and R1-r1≤R2-r2.

5. The spool assembly according to claim 4, characterized in that, 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.

6. The spool assembly according to claim 5, wherein, In the initial state, the inner diameter of the rivet is R3, 0≤R3-R2≤0.

8.

7. The spool assembly according to claim 1, characterized in that, The outer diameter of the end of the blocking section away from the sliding section is r3, 1≤r3 / r1≤2.

8.

8. The spool assembly according to claim 1, characterized in that, The outer diameter of the end of the valve cover located at the opening of the first receiving groove is R4, and the outer diameter of the end of the blocking section away from the sliding section is r3, 1≤R4 / r3≤2.

5.

9. The spool assembly according to claim 1, wherein The sliding section has one end facing the first receiving groove and is provided with a second 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. The spring is at least partially received in the second receiving groove.

10. A one-way valve, characterized in that, The invention comprises a valve body and a valve core assembly as claimed in any one of claims 1 to 9.

11. A refrigeration device, characterized in that, Comprising the one-way valve as claimed in claim 10.

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