Valve and refrigerating system
By designing valve components with rotatable guides and sealing structures, the problem of insufficient medium flow rate control was solved, achieving high-efficiency cooling at low loads and reducing lubricant retention and expansion valve oscillation.
Patent Information
- Application Number
- CN202423189252.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing valves cannot effectively control the medium flow rate, causing lubricating oil to stagnate in the evaporator and expansion valve to oscillate, thus affecting refrigeration efficiency.
Design a rotatable flow guide and sealing plate structure to regulate the medium flow rate by controlling the opening and closing of the flow channel, ensuring that the minimum flow rate of the compressor reaches 8% of the full load, and reducing lubricating oil retention and expansion valve oscillation.
It improves the refrigeration efficiency of the refrigeration system when operating at low load, reduces lubricating oil retention and expansion valve oscillation, and ensures stable system operation.
Smart Images
Figure CN223524462U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of refrigeration, and more particularly to a valve and a refrigeration system. Background Technology
[0002] With the rapid development of technology, the concept of energy-efficient and high-performance equipment manufacturing has become increasingly mature. In the refrigeration field, some equipment needs to meet a 13% refrigeration capacity percentage requirement during the lowest operating phase, at which point the refrigerant flow rate is only about 8% of that at full load. This low flow rate causes a decrease in the refrigerant velocity through the evaporator. Since the evaporator is a copper tube, aluminum fin heat exchanger, excessively low refrigerant velocity can lead to lubricating oil stagnation in the evaporator and expansion valve oscillation. Consequently, when the compressor is running at low load, the lubricating oil cannot smoothly return from the evaporator to the compressor, reducing the equipment's refrigeration efficiency. Furthermore, existing valves cannot effectively control the medium flow rate, failing to adequately address lubricating oil stagnation in the evaporator and expansion valve oscillation.
[0003] Therefore, it is necessary to provide an improved valve to solve some or all of the above problems. Utility Model Content
[0004] This application provides a valve and a refrigeration system that can control the flow rate of a medium.
[0005] This application provides a device including a pipe fitting, a flow channel seat, and a flow guide; the flow channel seat is embedded in the end of the pipe fitting and has multiple flow channels communicating with the pipe fitting; the flow guide includes a flow guide body and multiple sealing plates, the multiple sealing plates being spaced apart on the periphery of the flow guide body; the flow guide is located inside the pipe fitting, and the flow guide body is rotatably connected to the flow channel seat, the sealing plates being able to block part of the flow channels.
[0006] Furthermore, the fitting includes a first shell tube and a second shell tube that are connected to each other; the flow channel seat is located at the end of the second shell tube opposite to the first shell tube; along the direction from the first shell tube to the second shell tube, the inner diameter of the second shell tube gradually increases.
[0007] Furthermore, the flow guide body includes a base and a flow divider cone; the plurality of sealing plates are disposed on the periphery of the base; the base is connected to the flow channel seat, and the flow divider cone is located on the side of the base away from the flow channel seat; the diameter of the flow divider cone gradually increases along the direction from the first shell tube to the second shell tube.
[0008] Furthermore, the flow channel seat is provided with a receiving cavity; the plurality of flow channels are arranged at intervals around the receiving cavity; and part of the base is located within the receiving cavity.
[0009] Further, the flow guide body is provided with a guide groove, and the flow channel base includes a guide rail; the guide rail protrudes from the bottom of the accommodating cavity in the direction from the second shell tube to the first shell tube, and the guide groove is recessed from the bottom surface of the base, and the guide rail is located in the guide groove.
[0010] Further, the plurality of sealing pieces are arranged obliquely from the circumferential side of the flow guide body towards the first shell tube; in the direction from the first shell tube to the second shell tube, the axis of the flow channel is arranged obliquely in the direction deviating from the flow guide.
[0011] Further, the flow channel includes a first flow channel and a second flow channel arranged coaxially and connected in communication; the diameter of the first flow channel is smaller than the diameter of the second flow channel, and the sealing piece is used for sealing the first flow channel.
[0012] Further, the number of the sealing pieces is not more than half of the number of the flow channels.
[0013] Further, the drive member is fixed to the flow channel base, part of the drive member penetrates through the flow channel base, and is connected with the flow guide.
[0014] The application also provides a refrigeration system including an evaporator, a condenser, an expansion valve and the valve as described above; the valve is connected in communication between the evaporator and the condenser, and the expansion valve is connected in communication with the valve.
[0015] Compared with the prior art, the valve of the application is rotatably connected to the flow channel base through the flow guide body, and the sealing piece can seal part of the flow channel to control the on-off of part of the flow channel, so that the valve can control the flow rate of the medium flowing through the valve according to the demand. When the valve is applied to a refrigeration system, the flow guide can be rotated according to the working condition to adjust the number of flow-through holes of the flow channel, so that the minimum flow rate of the compressor can reach 8% of the full load, the number of lubricating oil retained in the heat exchanger is reduced, and the occurrence of expansion valve oscillation is reduced, thereby making the throttling system of the refrigeration system operate well and the refrigeration efficiency higher when the compressor operates at low load.
[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present specification. BRIEF DESCRIPTION OF DRAWINGS
[0017] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the present specification, and together with the specification, serve to explain the principles of the present specification.
[0018] Figure 1 is a side view of the valve of the application.
[0019] Figure 2 isFigure 1 Cross-sectional view of the valve along A-A.
[0020] Figure 3 Figure 1 Perspective view of the valve.
[0021] Figure 4 Figure 2 Cross-sectional view of the pipe in the valve.
[0022] Figure 5 Figure 1 Exploded view of the valve.
[0023] Figure 6 Figure 1 Perspective view of the valve with the pipe removed and the sealing plate not blocking the flow channel.
[0024] Figure 7 Figure 1 Perspective view of the valve with the pipe removed and the sealing plate not blocking the flow channel.
[0025] Figure 8 Figure 7 Side view of the flow guide.
[0026] Figure 9 Figure 8 Cross-sectional view of the flow guide along B-B.
[0027] Figure 10 Figure 8 Perspective view of the flow guide.
[0028] Figure 11
[0029] BRIEF DESCRIPTION OF THE DRAWINGS: 1-pipe; 11-first shell pipe; 12-second shell pipe; 13-limiting part; 2-flow channel seat; 20-upper side of the flow channel seat; 21-flow channel; 211-first flow channel; 212-second flow channel; 22-accommodation cavity; 23-guide rail; 24-inclined seat body; 25-flat seat body; 3-flow guide; 31-flow guide body; 311-base; 312-flow dividing cone; 313-guide groove; 32-sealing plate; 4-driving member; 41-driving body; 42-rotation shaft; 5-evaporator; 6-condenser; 7-expansion valve; 8-passage pipe; 9-dry filter. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments (or modes) of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.
[0031] If the application embodiments involve terms of direction indication or positional relationship (for example, up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, motion condition, etc. between components in a certain specific posture (as shown in the drawings); if the specific posture changes, the direction indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. in the application embodiments are only used for convenience of description, and cannot be understood as indicating or implying relative importance.
[0032] As shown in Figures 1 to 3 The valve of the application includes a pipe 1, a flow channel seat 2 and a flow guide 3. The flow channel seat 2 is embedded in the end of the pipe 1, and the flow channel seat 2 is provided with a plurality of flow channels 21 in communication with the pipe 1. The flow guide 3 is located in the pipe 1 and is rotatably connected to the flow channel seat 2. The flow guide 3 can be used to guide the medium to flow more uniformly from the pipe 1 into each flow channel 21, and the flow guide 3 can close part of the flow channels 21. Specifically, the flow guide 3 includes a flow guide body 31 and a plurality of sealing pieces 32, and the plurality of sealing pieces 32 are arranged at intervals on the circumferential side of the flow guide body 31. The flow guide body 31 is rotatably connected to the flow channel seat 2, and the sealing pieces 32 can rotate with the flow guide body 31.
[0033] The valve of the application is rotatably connected to the flow channel seat 2 by the flow guide body 31, and the sealing pieces 32 can block part of the flow channels 21 to control the on-off of part of the flow channels 21, so that the valve can control the flow rate of the medium flowing through the valve according to the needs. When the valve is applied to a refrigeration system, the flow guide 3 can be rotated according to the working condition to adjust the number of flow-through holes of the flow channel 21, so that the minimum flow rate of the compressor can reach 8% of the full load, reducing the amount of lubricating oil retained in the heat exchanger and reducing the occurrence of oscillation of the expansion valve, thereby making the throttling system of the refrigeration system operate well and the refrigeration efficiency higher when the compressor is running at low load.
[0034] In some embodiments, the pipe 1 at least wraps part of the flow channel seat 2, and the pipe 1 and the flow channel seat 2 are fixedly arranged. The pipe 1 includes a first shell pipe 11 and a second shell pipe 12 in communication. That is, the first shell pipe 11 is connected with the second shell pipe 12, and the interiors of the two are in communication. The flow channel seat 2 is located at one end of the second shell pipe 12 away from the first shell pipe 11. In the direction from the first shell pipe 11 to the second shell pipe 12, the inner diameter of the second shell pipe 12 gradually increases. Specifically, the first shell pipe 11 is cylindrical, and the second shell pipe 12 is conical.
[0035] Further combining Figure 4As shown, to improve the efficiency of the installation of the pipe fitting 1 and the flow channel seat 2, the pipe fitting 1 comprises a limiting portion 13, and the flow channel seat 2 is in contact with the limiting portion 13. The limiting portion 13 is in a stepped shape and is arranged on the inner side of the second shell pipe 12. The limiting portion 13 can limit the depth of the flow channel seat 2 embedded into the second shell pipe 12.
[0036] Further in combination Figure 5 As shown, the flow channel seat 2 is provided with a receiving cavity 22, which is arranged in a concave manner from the upper side 20 of the flow channel seat 2, and part of the flow guide 3 rotates in the receiving cavity 22. Along the thickness direction of the flow channel seat 2, the flow channel 21 penetrates through the flow channel seat 2, and along the circumferential direction of the flow channel seat 2, a plurality of flow channels 21 are arranged at intervals around the receiving cavity 22. Along the direction of the first shell pipe 11 to the second shell pipe 12, the axis of the flow channel 21 is arranged in an inclined manner in the direction deviating from the flow guide 3. Specifically, the flow channel 21 is arranged in an inclined manner relative to the central axis of the flow channel seat 2, that is, the axis of the flow channel 21 is arranged in parallel with the generatrix of the second shell pipe 12.
[0037] The flow channel 21 comprises a first flow channel 211 and a second flow channel 212. The first flow channel 211 and the second flow channel 212 are coaxially arranged and communicated, the opening of the first flow channel 211 is communicated with the inner cavity of the second shell pipe 12, and the opening of the second flow channel 212 is communicated with the external component. The diameter of the first flow channel 211 is smaller than that of the second flow channel 212, and the sealing piece 32 is used to seal the first flow channel 211.
[0038] In order to make the medium in the pipe fitting 1 flow more uniformly into the flow channel 21, the flow channel seat 2 comprises an inclined seat body 24 and a flat seat body 25, the inclined seat body 24 is arranged in an inclined manner from the outer circumferential side of the flat seat body 25 towards the first shell pipe 11. The flow channel 21 is arranged in the inclined seat body 24 and penetrates through the inclined seat body 24, and the sealing piece 32 is attached to the inclined seat body 24. The inclined seat body 24 is fixed to the second shell pipe 12 and is in contact with the limiting portion 13. The receiving cavity 22 is arranged in the flat seat body 25.
[0039] Further in combination Figures 6 to 8 As shown, in some embodiments, the flow guide body 31 comprises a base 311 and a flow splitting cone 312. A plurality of sealing pieces 32 are arranged in an inclined manner from the circumferential side of the flow guide body 31 towards the first shell pipe 11. Specifically, part of the base 311 is located in the receiving cavity 22, a plurality of sealing pieces 32 are arranged at intervals on the circumferential side of the base 311, and the sealing pieces 32 are located above the receiving cavity 22. The sealing pieces 32 are arranged in an inclined manner from the base 311 towards the first shell pipe 11, and the inclination angle of the sealing pieces 32 is approximately the same as that of the inclined seat body 24, so that the sealing pieces 32 can be attached to the inclined seat body 24, thereby sealing the flow channel 21.
[0040] The base 311 is connected to the flow channel seat 2, and the flow divider cone 312 is located on the side of the base 311 facing away from the flow channel seat 2. Along the direction from the first shell tube 11 to the second shell tube 12, the diameter of the flow divider cone 312 gradually increases. Specifically, the flow divider cone 312 is conical, and its generatrix is approximately parallel to the generatrix of the second shell tube 12. With this arrangement, when the medium flows from the first shell tube 11 to the second shell tube 12, the conical design of the second shell tube 12 and the flow divider cone 312 allows the medium to flow into the flow channel 21 in an orderly and uniform manner.
[0041] Further integration Figure 9 and Figure 10 As shown, to ensure smoother rotation of the flow guide body 31 on the flow channel seat 2, the flow guide body 31 is provided with a guide groove 313. The flow channel seat 2 includes a guide rail 23, which is engaged within the guide groove 313. Specifically, along the direction from the second shell tube 12 to the first shell tube 11, the guide rail 23 protrudes from the bottom of the receiving cavity 22, i.e., the guide rail 23 is located on the flat seat body 25, and the guide groove 313 is recessed from the bottom surface of the base 311, with the guide rail 23 located within the guide groove 313. The guide rail 23 and the guide groove 313 are arranged in a ring.
[0042] The number of sealing plates 32 shall not exceed half the number of flow channels 21. This arrangement allows for the control of the medium flow rate through the valve by blocking the flow channels 21 with the sealing plates 32, while avoiding excessive control of the medium flow rate through the valve. When sealing the flow channels 21, one sealing plate 32 can completely block one flow channel, while, depending on other requirements, one sealing plate 32 can also block a portion of the opening of a flow channel.
[0043] To enable the flow guide 3 to rotate and improve the automation level of the valve, the valve may also include a drive component 4. The drive component 4 is fixed to the flow channel seat 2, and a portion of the drive component 4 passes through the flow channel seat 2 and is connected to the flow guide 3. Specifically, the drive component 4 includes a drive body 41 and a rotating shaft 42. The drive body 41 is fixed to the side of the flat seat 25 opposite to the flow guide 3, and the rotating shaft 42 passes through the flat seat 25 and is connected to the flow guide 3, thereby allowing the flow guide 3 to rotate relative to the flow channel seat 2.
[0044] like Figure 11 As shown, this application also provides a refrigeration system, including an evaporator 5, a condenser 6, an expansion valve 7, a compressor (not shown), and valves as described above. The valves are connected between the evaporator 5 and the condenser 6, and the expansion valve 7 is connected to a pipe fitting 1. Specifically, the expansion valve 7 is connected between the pipe fitting 1 and the condenser 6. The compressor is connected to the evaporator 5.
[0045] The refrigeration system of the present application sets the valve and rotates the flow guide 3 according to the working condition to adjust the number of flow holes of the flow channel 21, thereby reducing the area of the medium flowing through the evaporator 5, so that the minimum flow of the compressor can reach 8% of the full load. When the compressor is running at low load, the lubricating oil can smoothly return to the compressor from the evaporator 5, greatly reducing the amount of lubricating oil retained in the evaporator 5 and reducing the occurrence of oscillation of the expansion valve 7, thereby making the throttling system of the refrigeration system operate well and the refrigeration efficiency higher when the compressor is running at low load.
[0046] In some embodiments, the refrigeration system comprises a through pipe 8 and a drying filter 9, one end of the through pipe 8 is connected to the second flow channel 212, and the other end is connected to the evaporator 5. The through pipe 8 is provided in plurality, and the number of the through pipe 8 corresponds to the number of the flow channel 21, and the through pipe 8 is arranged one by one in the flow channel 21. The drying filter 9 is connected between the condenser 6 and the expansion valve 7.
[0047] In other embodiments, the pipe 1 is connected to the evaporator 5, the expansion valve 7 is connected between the pipe 1 and the evaporator 5, and the through pipe 8 is connected to the condenser 6 away from the second flow channel 212. In this way, the refrigeration system of the present application can be used for heating.
[0048] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structure described in the above embodiments and shown in the drawings; any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.
Claims
1. A valve member characterized by, The valve comprises a pipe, a flow channel seat and a flow guide. The flow channel seat is embedded in the end of the pipe, and the flow channel seat is provided with a plurality of flow channels communicated with the pipe. The flow guide comprises a flow guide body and a plurality of sealing pieces. The plurality of sealing pieces are arranged at the circumferential side of the flow guide body. The flow guide is located in the pipe, and the flow guide body is rotatably connected to the flow channel seat. The sealing pieces can block part of the flow channels.
2. The valve member of claim 1, wherein The pipe comprises a first shell pipe and a second shell pipe communicated with each other. The flow channel seat is located at the end of the second shell pipe away from the first shell pipe. The inner diameter of the second shell pipe gradually increases in the direction from the first shell pipe to the second shell pipe.
3. The valve member of claim 2, wherein The flow guide body comprises a base and a flow distribution cone. The plurality of sealing pieces are arranged at the circumferential side of the base. The base is connected to the flow channel seat, and the flow distribution cone is located at the side of the base away from the flow channel seat. The diameter of the flow distribution cone gradually increases in the direction from the first shell pipe to the second shell pipe.
4. The valve member of claim 3, wherein The flow channel seat is provided with a receiving cavity. The plurality of flow channels are arranged at intervals around the receiving cavity. Part of the base is located in the receiving cavity.
5. The valve member of claim 4, wherein The flow guide body is provided with a guide groove, and the flow channel seat comprises a guide rail. In the direction from the second shell pipe to the first shell pipe, the guide rail is protrudingly arranged from the bottom of the receiving cavity, and the guide groove is recessedly arranged from the bottom surface of the base. The guide rail is located in the guide groove.
6. The valve of claim 2, wherein The plurality of sealing pieces are arranged to be inclined from the circumferential side of the flow guide body to the first shell pipe. In the direction from the first shell pipe to the second shell pipe, the axis of the flow channel is arranged to be inclined in the direction deviating from the flow guide.
7. The valve of claim 1, wherein The flow channel comprises a first flow channel and a second flow channel arranged coaxially and communicated with each other. The diameter of the first flow channel is smaller than the diameter of the second flow channel, and the sealing piece is used to block the first flow channel.
8. The valve of claim 1, wherein The number of the sealing pieces is not more than half of the number of the flow channels.
9. The valve of claim 1, wherein The valve further comprises a driving piece. The driving piece is fixed to the flow channel seat, part of the driving piece penetrates through the flow channel seat, and is connected with the flow guide.
10. A refrigeration system characterized by, The valve comprises an evaporator, a condenser, an expansion valve and the valve of any one of claims 1 to 9. The valve is communicated between the evaporator and the condenser, and the expansion valve is communicated with the pipe.