An expansion valve and a method of installing the same
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
- Filing Date
- 2021-02-02
- Publication Date
- 2026-06-05
Smart Images
Figure CN114688259B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of refrigerant fluid control components, and in particular to an expansion valve and its installation method. Background Technology
[0002] Currently, the diameter, depth, and spacing of the expansion valve interface, the pipeline-side interface, and the evaporator-side sealing interface vary depending on customer requirements, resulting in high design, manufacturing, and investment costs for expansion valves. Furthermore, the size of the expansion valve body is limited by the interface dimensions, preventing miniaturization and standardization. Summary of the Invention
[0003] The purpose of this invention is to provide a low-cost expansion valve and its installation method, which is standardized and miniaturized.
[0004] To achieve the above objectives, the system includes an inner valve body and an outer valve body, which are fixed or limited in position. The inner valve body includes a valve body, a power head assembly, and a transmission rod assembly. The expansion valve includes a valve core assembly and an adjustment assembly. The transmission rod assembly drivesly connects the power head assembly and the valve core assembly. The outer valve body includes a first outer valve body and a second outer valve body, which are located on opposite sides of the inner valve body. The first outer valve body includes a first interface portion, and the second outer valve body includes a second interface portion. The first interface portion has a first interface, and the inner valve body has a position opposite to the first interface. The valve body has a first inner interface that is connected and cooperates with the second inner interface, and a second inner interface that is corresponding to and cooperates with the second inner interface. A first sealing ring is provided between the inner valve body and the first outer valve body, and a second sealing ring is provided between the inner valve body and the second outer valve body. The inner valve body and / or the first outer valve body has a first sealing groove, and the inner valve body and / or the second outer valve body has a second sealing groove. At least a portion of the first sealing ring is located in the first sealing groove, and at least a portion of the second sealing ring is located in the second sealing groove. The first sealing groove is arranged around the first inner interface, and the second sealing groove is arranged around the second inner interface.
[0005] To achieve the above objectives, the present invention also provides a method for installing an expansion valve:
[0006] Provided components: including a first outer valve body, a second outer valve body, an inner valve body, and a sealing ring; assemble the sealing ring with the inner valve body and / or the first outer valve body or the second outer valve body, wherein the inner valve body or the first outer valve body or the second outer valve body has a sealing groove provided around the interface portion, and insert the sealing ring into the sealing groove;
[0007] The inner valve body, the first outer valve body, and the second outer valve body are assembled and fixed together. The first inner interface is positioned opposite to and connected to the first interface, and the second inner interface is positioned opposite to and connected to the second interface.
[0008] The expansion valve of the present invention includes an inner valve body and an outer valve body. The outer valve body includes a first outer valve body and a second outer valve body. The inner valve body and the outer valve body are separated and then assembled together. The outer valve body includes a first outer valve body and a second outer valve body. The inner valve body and / or the first outer valve body and the second outer valve body have corresponding interfaces and the interfaces are sealed together. The inner valve body is not limited by the interface size, and can be designed in a standardized and miniaturized manner, resulting in low manufacturing cost. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0010] Figure 1 This is a three-dimensional structural diagram of the expansion valve according to the first embodiment of the present invention;
[0011] Figure 2 for Figure 1 Front view of the inner valve body;
[0012] Figure 3 for Figure 2 A cross-sectional view of the inner valve body along the AA direction;
[0013] Figure 4 for Figure 3 A three-dimensional structural diagram of the inner valve body;
[0014] Figure 5 for Figure 3 Another three-dimensional structural diagram of the inner valve body;
[0015] Figure 6 This is a left view of the expansion valve according to the first embodiment of the present invention;
[0016] Figure 7 for Figure 6 A cross-sectional view of the expansion valve in the BB direction;
[0017] Figure 8 for Figure 7 3D exploded view of the expansion valve;
[0018] Figure 9 for Figure 7 A front view of the exploded structure of the expansion valve;
[0019] Figure 10 This is a schematic diagram of the assembly steps of the expansion valve according to the first embodiment of the present invention;
[0020] Figure 11 This is a schematic diagram of the assembly steps of the pipe and expansion valve according to the first embodiment of the present invention;
[0021] Figure 12 This is a three-dimensional structural diagram of the assembly of the connecting pipe and the expansion valve according to the first embodiment of the present invention;
[0022] Figure 13 This is a schematic diagram of the assembly of the first outer valve body, the second outer valve body, and the connecting pipe.
[0023] Figure 14 This is a schematic diagram of the assembly steps of the pipe and expansion valve according to the second embodiment of the present invention;
[0024] Figure 15 This is a three-dimensional structural diagram of the assembly of the connecting pipe and the expansion valve according to the second embodiment of the present invention;
[0025] Figure 16 for Figure 15 Front view of the assembly of the central connecting pipe and expansion valve. Detailed Implementation
[0026] Referring now to the embodiments described in detail in the accompanying drawings. Numerous specific details are set forth in the following detailed description to provide a full understanding of the invention. However, those skilled in the art will understand that the invention can be practiced without these specific details. It should also be understood that the specific components, devices, and features illustrated in the drawings and described herein are merely exemplary and should not be considered limiting.
[0027] See Figure 1 This invention provides a first embodiment of an expansion valve 100, which includes an inner valve body 10 and an outer valve body 20, which are independently formed. The inner and outer valve bodies are fixed or limited in position. The inner and outer valve bodies can be fixed using bolts or screws; the fixing method is not limited. Alternatively, the inner and outer valve bodies can be limited in position, with a limiting groove formed in the outer valve body, and the inner valve body portion positioned within the limiting groove for limitation. The limiting method is also not limited. The outer valve body 20 is separately and independently set from the inner valve body 10, ensuring that the inner valve body is not restricted by the outer valve body, and guaranteeing unrestricted internal installation space for the inner valve body.
[0028] See Figure 3The inner valve body 10 includes a valve body 11, a power head assembly 12, a transmission rod assembly 13, a valve core assembly 14, and an adjusting seat assembly 15. The valve body 11 has an opening at the top, the power head assembly 12 is located at the top of the valve body 11, and the valve body 11 has an opening at the bottom. The adjusting seat assembly 15 is located at the bottom opening of the valve body 11. The valve body 11 also includes a valve chamber 16, with the valve core assembly 14 and the adjusting seat assembly 15 located in the valve chamber 16. The transmission rod assembly 13 is located inside the valve body 11 and drives the power head assembly 12 and the valve core assembly 14. The transmission rod assembly 13 can convert the force exerted by the power head assembly 12 on the transmission rod assembly 13 into a force exerted by the transmission rod assembly 13 on the valve core assembly 14, allowing the valve core assembly 14 to move up and down under the action of the power head assembly 12. The valve core assembly and the adjusting assembly can also be located between the outer valve body and the inner valve body for adjusting the opening degree.
[0029] See Figure 3 In a first embodiment of the present invention, the inner valve body 10 includes a first flow channel 101 and a second flow channel 102. The inner valve body 10 includes a first inner interface 111, a second inner interface 112, a third inner interface 113, and a fourth inner interface 114. The first inner interface 111 is one interface of the first flow channel 101, the second inner interface 112 is the other interface of the first flow channel 101, the third inner interface 113 is one interface of the second flow channel 102, and the fourth inner interface 114 is the other interface of the second flow channel 102. Fluid flows in from the first inner interface 111, and after being adjusted by the valve core assembly 14, flows out from the second inner interface 112. Fluid flows in from the third inner interface 113 and flows out from the fourth inner interface 114. Of course, the second inner interface 112 and the fourth inner interface 114 can be used as inlets, and the first inner interface 111 and the third inner interface 113 can be used as outlets. Of course, here it can also be just the first inner interface 111 and the second inner interface 112. The fluid flows in from the first inner interface 111 and flows out from the second inner interface 112. The inner valve body of the present invention is processed independently, and the internal structure is less affected by the interface. The size, shape and interface form of the inner valve body can be standardized into one type. During production, the specifications of products and testing tooling can be reduced, and management costs can be reduced.
[0030] See Figure 2 , Figure 4 , Figure 5In a first embodiment of the present invention, the valve body 11 is generally rectangular and includes a first side portion 103, a second side portion 104, a third side portion 105, and a fourth side portion 106. The first side portion 103 and the third side portion 105 are disposed opposite to each other, the second side portion 104 and the fourth side portion 106 are disposed opposite to each other, the second side portion 104 is disposed adjacent to the first side portion 103, and the fourth side portion 106 is disposed adjacent to the first side portion 103. The first inner interface 111 and the fourth inner interface 114 are located at... The first side 103, the second inner interface 112 and the third inner interface 113 are located on the third side 105. The valve body 11 also includes a mounting groove 16. In cross-section, the mounting groove 16 has a semi-circular cross-section. The mounting groove 16 includes a first mounting groove 161 and a first mounting groove 162. The first mounting groove 161 runs along the second side 104 through the first side 103 and the third side 105. The second mounting groove 162 runs along the fourth side 106 through the first side 103 and the third side 105.
[0031] See Figure 1 and Figure 7 In a first embodiment of the present invention, the outer valve body 20 includes a first outer valve body 21 and a second outer valve body 22. The first outer valve body includes a first interface portion 210 and a fourth interface portion 240. The second outer valve body includes a second interface portion 220 and a third interface portion 230. The first interface portion 210 has a first outer interface 211 and a first interface 212. The second interface portion 220 includes a second outer interface 221 and a second interface 222. The third interface portion 230 includes a third outer interface 231 and a third interface 232. The fourth interface portion 240 includes a fourth outer interface 241 and a fourth interface 242. The first interface 212 is located on the inner side of the first outer valve body 21 relative to the first interface portion 210 close to the inner valve body 10. The first outer interface 211 is located on the outer side of the first outer valve body 21 relative to the outward-facing first interface portion 210. The second interface 222 is located on the inner side of the second outer valve body 22 relative to the second interface portion 220 close to the inner valve body 10. The second external interface 221 is located on the outer side of the second interface portion 220 facing outwards on the second external valve body 22. The third interface 232 is located on the inner side of the third interface portion 230 facing outwards on the second external valve body 22. The third external interface 231 is located on the outer side of the third interface portion 230 facing outwards on the second external valve body 22. The fourth interface 242 is located on the inner side of the second interface portion 220 facing outwards on the first external valve body 21. The fourth external interface 241 is located on the outer side of the fourth interface portion 240 facing outwards on the first external valve body 21. In terms of height, the fourth interface portion 240 is higher than the first interface portion 210, and the third interface portion 230 is higher than the second interface portion 220. The first interface 212 is matched and connected to the first inner interface 111. The second interface 222 is matched and connected to the second inner interface 112. The third interface 232 is matched and connected to the third inner interface 113. The fourth interface 242 is matched and connected to the fourth inner interface 114.
[0032] See Figure 7 Specifically, all of the above-mentioned external interfaces and interfaces are circular openings. The first external interface 211 is connected to the first interface 212, and the diameter of the first external interface 211 is larger than the diameter of the first interface 212. The second external interface 221 is connected to the second interface 222, and the diameter of the second external interface 211 is larger than the diameter of the second interface 222. The diameter of the third external interface 231 is connected to the third interface 232, and the diameter of the third external interface 231 is larger than the diameter of the third interface 232. The fourth external interface 241 is connected to the fourth interface 242, and the diameter of the fourth external interface 241 is larger than the diameter of the fourth interface 242.
[0033] See Figure 3 , Figure 4 , Figure 5 , Figure 7 In a first embodiment of the present invention, the expansion valve includes a sealing groove 115, which includes a first sealing groove 1151, a second sealing groove 1152, a third sealing groove 1153, and a fourth sealing groove 1154. The first sealing groove 1151 is disposed around a first inner interface 111, the second sealing groove 1152 is disposed around a second inner interface 112, the third sealing groove 1153 is disposed around a third inner interface 113, and the fourth sealing groove 1154 is disposed around a fourth inner interface 114. The expansion valve also includes a sealing ring 116. 116 includes a first sealing ring 1161, a second sealing ring 1162, a third sealing ring 1163, and a fourth sealing ring 1164. The first sealing ring 1161 is located in the first sealing groove 1151, the second sealing ring 1162 is located in the second sealing groove 1152, the third sealing ring 1163 is located in the third sealing groove 1152, and the fourth sealing ring 1164 is located in the fourth sealing groove 1154. The sealing rings are preferably rectangular sealing rings, which can better prevent refrigerant from leaking out from the gap between the inner valve body and the outer valve body interface.
[0034] In the first embodiment of the present invention, the first inner interface 111 is located in the valve body 11. The first interface portion 210, near the inner side of the inner valve body 10, has a first interface 212 greater than or equal to the first inner interface 111, and a first interface 121 less than or equal to the first sealing groove 1151. The second interface portion 220, near the inner side of the inner valve body 10, has a second interface 222 greater than or equal to the second inner interface 112, and a second interface 222 less than or equal to the second sealing groove 1152. The third interface portion 230, near the inner side of the inner valve body, has a third interface 232 greater than or equal to the third inner interface 113, and a third interface 232 less than or equal to the third sealing groove 1153. The fourth interface portion 240, near the inner side of the inner valve body, has a first inner interface 113 greater than or equal to the third inner interface 113, and a fourth interface portion 240, near the inner side of the inner valve body, has a first inner interface 114, a second inner interface 1151, a third inner interface 1152, a third inner interface 1153, a third inner interface 1153, a third inner interface 1153, a third inner interface 1153, a fourth inner interface portion 240, near the inner side of the inner valve body, has a first inner interface 1153, a second inner interface 1154, a third inner interface 1155, a third inner interface 1155, a third inner interface 1153, a third inner interface 1154, a third inner interface 115 ... The fourth interface 242 is greater than or equal to the fourth inner interface 114, and the fourth interface 114 is less than or equal to the fourth sealing groove 1154. Specifically, both the interfaces and inner interfaces are circular openings, and both sealing grooves are circular sealing grooves. The diameter of the first interface 212 is greater than the diameter of the first inner interface 111 and less than the diameter of the first sealing groove 1151; the diameter of the second interface 222 is greater than the diameter of the second inner interface 112 and less than the diameter of the second sealing groove 1152; the diameter of the third interface 232 is greater than the diameter of the third inner interface 113 and less than the diameter of the third sealing groove 1153; and the diameter of the fourth interface 242 is greater than the diameter of the fourth inner interface 114 and less than the diameter of the fourth sealing groove 1154. Of course, the interfaces and sealing grooves are not necessarily circular openings; they can also be square openings, and the shape of the interfaces is not limited. The limiting settings for the first interface, the first inner interface, and the diameter of the sealing groove ensure, on the one hand, that the inner valve body interface has sufficient flow area when the expansion valve is processed and assembled within the allowable range of errors, thus avoiding premature throttling due to insufficient flow area. On the other hand, it can reduce the generation of fluid flow noise and prevent fluid leakage from the expansion valve during use.
[0035] See Figure 6 , Figure 8 In the first embodiment of the present invention, the inner valve body 10, the first outer valve body 21, and the second outer valve body 22 are fixed by bolts 17 and nuts 173. The first outer valve body 21 includes a first mounting hole 213 and a fourth mounting hole 214. The second outer valve body 22 includes a second mounting hole 223 and a third mounting hole 224. The bolts 17 include a first bolt 171 and a second bolt 172. The first bolt 171 passes through the first mounting hole 213, the first mounting groove 161, and the second mounting hole 223. The second bolt 172 passes through the fourth mounting hole 214, the first mounting groove 162, and the third mounting hole 224. The first outer valve body 21, the inner valve body 20, and the second outer valve body 22 are fixed by bolts 17 and nuts 173. Of course, the fixing method is not limited to bolts and nuts, and other fixing methods can also be used.
[0036] See Figure 7 and 9The outer valve body 21 includes a positioning part 18, which includes a first positioning part 181 and a second positioning part 182. The first outer valve body 21 includes the first positioning part 181, and the second outer valve body 22 includes the second positioning part 182. The first outer valve body 21 has a first positioning groove 191, and the second outer valve body 22 has a second positioning groove 192. The power head assembly 12 includes an air box head 121, which is at least partially located in the first fixing groove 191 and at least partially located in the second fixing groove 192. Of course, the positioning method is not limited here, and other positioning methods such as snap-fit can also be used.
[0037] See Figure 1 , Figure 6 , Figure 7 In the first embodiment of the present invention, the inner valve body 10 and the outer valve body 20 are fixedly connected by bolts, and the power head assembly 12 is limitedly connected to the first outer valve body 21 and the second outer valve body 22. The first interface 212 is matched and connected to the first inner interface 111, the second interface 222 is matched and connected to the second inner interface 112, the third interface 232 is matched and connected to the third inner interface 113, and the fourth interface 242 is matched and connected to the fourth inner interface 114. The first flow channel 101 communicates with the first outer part 210, the first flow channel 101 communicates with the second outer part 220, the second flow channel 102 communicates with the third outer part 230, and the second flow channel 102 communicates with the fourth outer interface 240. Here, the inner valve body and the outer valve body are fixedly connected by bolts, and the power head assembly is limitedly connected to the first outer valve body and the second outer valve body, which can realize the positioning and assembly of the inner valve body and the outer valve body.
[0038] See Figure 3 , Figure 6 , Figure 7 , Figure 10 This invention discloses a method for installing an expansion valve, comprising the following steps:
[0039] S1) Provide components including a first outer valve body 21, a second outer valve body 22, an inner valve body 10, and a sealing ring 116; assemble the sealing ring 116 with the inner valve body 10 and / or the first outer valve body 21 or the second outer valve body 22, wherein the inner valve body 10, the first outer valve body 21, or the second outer valve body 22 has a sealing groove 115 provided around the interface portion, and insert the sealing ring 116 into the sealing groove 115;
[0040] S2) The inner valve body 10, the first outer valve body 21, and the second outer valve body 22 are assembled and fixed together. The first inner interface 111 and the first interface 212 are positioned opposite each other and connected. The second inner interface 112 and the second interface 222 are positioned opposite each other and connected. The third inner interface 113 and the third interface 232 are positioned opposite each other and connected. The fourth inner interface 114 and the fourth interface 242 are positioned opposite each other and connected.
[0041] See Figure 3 , Figure 6 , Figure 7 , Figure 11 , Figure 12 , Figure 13 The present invention also discloses that the assembly of the connecting pipe and the expansion valve in the first embodiment includes the following steps:
[0042] S1): A first pipeline 021, a fourth pipeline 024, and a first outer valve body 21 are provided. The first pipeline 021 and the first interface 210 are welded and fixed, and the fourth pipeline 024 and the fourth interface 240 are welded and fixed. S2): A second pipeline 022, a third pipeline 023, and a second outer valve body 22 are provided. The second pipeline 022 and the second interface 220 are welded and fixed, and the third pipeline 023 and the third interface 230 are welded and fixed. S3): An inner valve body 10 and a sealing ring 116 are provided. The sealing ring 116 includes a first sealing ring 1161, a second sealing ring 1162, a third sealing ring 1163, and a fourth sealing ring 1164. The first sealing ring 1161 is disposed around the first interface 212, the second sealing ring 1162 is disposed around the second interface 222, and the third sealing ring 1163 is disposed around the second interface 222. 63 is arranged around the third interface 232, and the fourth sealing ring 1164 is arranged around the fourth interface 242. The first sealing ring 1161 is placed in the first sealing groove 1151, the second sealing ring 1162 is placed in the second sealing groove 1152, the third sealing ring 1163 is placed in the third sealing groove 1153, and the fourth sealing ring 1164 is placed in the fourth sealing groove 1154. The inner valve body 10, the first outer valve body 21, and the second outer valve body 22 are sealed together, so that the first inner interface 111 and the first interface 212 are positioned opposite each other and are connected, the second inner interface 112 and the second interface 222 are positioned opposite each other and are connected, the third inner interface 113 and the third interface 232 are positioned opposite each other and are connected, and the fourth inner interface 114 and the fourth interface 242 are positioned opposite each other and are connected.
[0043] S4): Provide a first bolt 171, a second bolt 172, and a nut 173. The first outer valve body 21 includes a first mounting hole 213 and a fourth mounting hole 214. The second outer valve body 22 includes a second mounting hole 223 and a third mounting hole 224. The first bolt 171 passes through the first mounting hole 213 and the second mounting hole 223, and a first mounting groove 161. The second bolt passes through the fourth mounting hole 214 and the third mounting hole 224, and a second mounting groove 162. The bolts position the inner valve body relative to the first outer valve body with pipeline in step S1) and the second outer valve body with pipeline in step S2) through the mounting holes and mounting grooves, and fix and press the sealing ring 116 between the inner and outer valve bodies by the nut 173.
[0044] The sealing ring used in the above steps is a square sealing ring.
[0045] See Figure 3, Figure 6 , Figure 7 , Figure 14 , Figure 15 , Figure 16 The present invention also discloses an installation method for assembling the connecting pipe and the expansion valve according to the second embodiment of the invention, comprising the following steps:
[0046] S1): Provides a first pipe 021', a fourth pipe 024', a first outer valve body 21', a first pressure plate 31, and a stud 33. The first pipe 021' has a first protrusion 0211', and the fourth pipe 024' has a fourth protrusion 0241'. One side of the protrusions of the first pipe and the fourth pipe respectively passes through the first pressure plate 31. The first pipe 021' is located on the other side of the first protrusion 0211' and is sealed to the first interface 210' of the first outer valve body 21'. The fourth pipe 024' is located on the other side of the fourth protrusion 0241' and is sealed to the fourth interface 240' of the first outer valve body 21'. The first pressure plate 31 and the first outer valve body 21' are fixed by the stud 33.
[0047] S2): An inner valve body 10 and a sealing ring 116 are provided. The sealing ring 116 includes a first sealing ring 1161, a second sealing ring 1162, a third sealing ring 1163, and a fourth sealing ring 1164. The first sealing ring 1161 is arranged around the first interface 212, the second sealing ring 1162 is arranged around the second interface 222, the third sealing ring 1163 is arranged around the third interface 232, and the fourth sealing ring 1164 is arranged around the fourth interface 242. The first sealing ring 1161 is placed in the first sealing groove 1151, and the second sealing ring 1162 is placed in the second sealing groove. 1152, the third sealing ring 1163 is placed in the third sealing groove 1153, the fourth sealing ring 1164 is placed in the fourth sealing groove 1154, the inner valve body 10, the first outer valve body 21 and the second outer valve body 22 are sealed together, so that the first inner interface 111 and the first interface 212 are in opposite positions and cooperate and communicate, so that the second inner interface 112 and the second interface 222 are in opposite positions and cooperate and communicate, so that the third inner interface 113 and the third interface 232 are in opposite positions and cooperate and communicate, so that the fourth inner interface 114 and the fourth interface 242 are in opposite positions and cooperate and communicate.
[0048] S3): Provides a second pipe 022', a third pipe 023', and a second outer valve body 22'. The second pipe 022' has a second protrusion 0221', and the third pipe 023' has a third protrusion 0231'. One side of the protrusions of the second pipe and the third pipe respectively passes through the second pressure plate 32. The second pipe 022' is located on the other side of the second protrusion 0221' and is sealed to the second interface 220' of the second outer valve body 22'. The third pipe 023' is located on the other side of the third protrusion 0231' and is sealed to the third interface 230' of the second outer valve body 22'.
[0049] S4): Provide a first bolt 171, a second bolt 172, and a nut 173. The first outer valve body 21' includes a first mounting hole 213 and a fourth mounting hole 214. The second outer valve body 22' includes a second mounting hole 223 and a third mounting hole 224. The first bolt 171 passes through the first mounting hole 213 and the second mounting hole 223, and a first mounting groove 161. The second bolt passes through the fourth mounting hole 214 and the third mounting hole 224, and a second mounting groove 162. The bolts position the inner valve body relative to the first outer valve body with pipeline in step S1) and the second outer valve body with pipeline in step S3) through the mounting holes and mounting grooves, and fix and press the sealing ring 116 between the inner and outer valve bodies by the nut 173.
[0050] The sealing ring used in the above steps is a square sealing ring.
[0051] Compared to existing technologies, the expansion valve of this invention includes an outer valve body for the interface portion and an inner valve body for the control portion. The outer valve body includes a first outer valve body and a second outer valve body. The outer valve body and the inner valve body are fixedly connected by bolts and nuts to tighten the sealing ring, which has the following technical advantages:
[0052] (1) The internal valve body is not limited by the size of the interface and can be further miniaturized.
[0053] (2) The inner and outer valve bodies are fixed with bolts and nuts to achieve positioning, assembly and sealing between the inner and outer valve bodies;
[0054] (3) The inner and outer valve bodies are designed and manufactured independently, which can be standardized, reducing valve body specifications, reducing expansion valve testing tooling, and reducing costs.
[0055] (4) The diameter of the outer valve body external interface is slightly larger than the diameter of the inner valve body internal interface, but not larger than the diameter of the inner valve body sealing groove, which ensures both the sealing between the inner and outer valve bodies and the smooth flow of fluid.
[0056] In addition, the use of rectangular sealing rings can better prevent refrigerant from leaking out from the gap between the inner and outer valve body interfaces, thus improving the sealing performance.
[0057] It should be noted that the terms "first," "second," "third," etc., used in the above embodiments are merely for naming purposes and do not imply any order. The above embodiments are only for illustrating the present invention and are not intended to limit the technical solutions described herein. Although this specification has described the present invention in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify or make equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.
Claims
1. An expansion valve, comprising an inner valve body and an outer valve body, wherein the inner valve body and the outer valve body are fixedly or limitedly positioned; the inner valve body includes a valve body, a power head assembly, and a transmission rod assembly; the expansion valve further includes a valve core assembly and an adjusting assembly; the transmission rod assembly drivesly connects the power head assembly and the valve core assembly; the outer valve body includes a first outer valve body and a second outer valve body, the first outer valve body and the second outer valve body being respectively located on both sides of the inner valve body; the first outer valve body includes a first interface portion and a fourth interface portion; the second outer valve body includes a second interface portion and a third interface portion; the first interface portion has a first interface; the second interface portion has a second interface; the third interface portion has a third interface; the fourth interface portion has a fourth interface; the inner valve body has a first inner interface corresponding to and communicating with the first interface portion, and an inner inner interface corresponding to and communicating with the second interface portion. The system includes a second inner interface that corresponds to and is connected to the third inner interface, a third inner interface that corresponds to and is connected to the fourth inner interface, and a fourth inner interface that corresponds to and is connected to the fourth inner interface. The first inner interface and the fourth inner interface are located on one side of the inner valve body, and the second inner interface and the third inner interface are located on the other side of the inner valve body. A first sealing ring is provided between the inner valve body and the first outer valve body, and a second sealing ring is provided between the inner valve body and the second outer valve body. The inner valve body and / or the first outer valve body are provided with a first sealing groove, and the inner valve body and / or the second outer valve body are provided with a second sealing groove. At least a portion of the first sealing ring is located in the first sealing groove, and at least a portion of the second sealing ring is located in the second sealing groove. The first sealing groove is arranged around the first inner interface, and the second sealing groove is arranged around the second inner interface.
2. The expansion valve as described in claim 1, characterized in that, The first inner interface and the second inner interface are located in the valve body. The first interface of the first interface portion near the inner side of the inner valve body is greater than or equal to the first inner interface, and the first interface is less than or equal to the first sealing groove. The second interface of the second interface portion near the inner side of the inner valve body is greater than or equal to the second inner interface, and the second interface is less than or equal to the second sealing groove.
3. The expansion valve as described in claim 1, characterized in that, The third interface portion near the inner body of the inner valve body is greater than or equal to the third inner interface. The expansion valve includes a third sealing groove, a fourth sealing groove, a third sealing ring, and a fourth sealing ring. The third interface is less than or equal to the third sealing groove. The fourth interface portion near the inner body of the inner valve body is greater than or equal to the fourth inner interface. The fourth interface is less than or equal to the fourth sealing groove. The third sealing ring surrounds the third interface and is placed in the third sealing groove. The fourth sealing ring surrounds the fourth interface and is placed in the fourth sealing groove.
4. The expansion valve according to claim 3, characterized in that, The valve body includes a first side, a second side, a third side, and a fourth side. The first side and the third side are disposed opposite to each other, the second side and the fourth side are disposed opposite to each other, the second side and the first side are disposed adjacent to each other, the fourth side and the first side are disposed adjacent to each other, the first inner interface and the fourth inner interface are located on the first side, and the second inner interface and the third inner interface are located on the third side of the valve body.
5. The expansion valve according to any one of claims 1-4, characterized in that, The valve body has a mounting groove, the first outer valve body has a first mounting hole, the second outer valve body has a second mounting hole, the expansion valve includes a bolt and a nut, the bolt is at least partially located in the mounting groove, the first mounting hole, and the second mounting hole, and the first outer valve body, the inner valve body, and the second outer valve body are fixed by the bolt and the nut.
6. The expansion valve according to claim 5, characterized in that, The first outer valve body has a fourth mounting hole, and the second outer valve body has a third mounting hole. The first mounting hole and the fourth mounting hole are located at the same axial height of the first outer valve body, and the second mounting hole and the third mounting hole are located at the same axial height of the second outer valve body. The mounting groove includes a first mounting groove and a second mounting groove. The first mounting groove extends along the second side through the first side and the third side, and the second mounting groove extends along the fourth side through the first side and the third side. The bolt includes a first bolt and a second bolt. The first bolt is at least partially located in the first mounting hole, the second mounting hole, and the first mounting groove. The second bolt is at least partially located in the third mounting hole, the fourth mounting hole, and the second mounting groove. The first outer valve body, the inner valve body, and the second outer valve body are fixed by bolts and nuts.
7. The expansion valve according to any one of claims 1-4 and 6, characterized in that, The outer valve body includes a positioning part, which includes a first positioning part and a second positioning part. The first outer valve body includes a first positioning part, and the second outer valve body includes a second positioning part. The first positioning part has a first positioning groove, and the second positioning part has a second positioning groove. The power head assembly is at least partially located in the first positioning groove and at least partially located in the second positioning groove, thereby realizing the positioning of the inner valve body and the outer valve body.
8. The expansion valve according to claim 5, characterized in that, The outer valve body includes a positioning part, which includes a first positioning part and a second positioning part. The first outer valve body includes a first positioning part, and the second outer valve body includes a second positioning part. The first positioning part has a first positioning groove, and the second positioning part has a second positioning groove. The power head assembly is at least partially located in the first positioning groove and at least partially located in the second positioning groove, thereby realizing the positioning of the inner valve body and the outer valve body.
9. The expansion valve according to claim 1, characterized in that, The first interface portion has a first external interface, the second interface portion has a second external interface, the third interface portion has a third external interface, and the fourth interface portion has a fourth external interface. The first external interface is larger than the first interface and is connected to the first interface. The second external interface is larger than the second interface and is connected to the second interface. The third external interface is larger than the third interface and is connected to the third interface. The fourth external interface is larger than the fourth interface and is connected to the fourth interface.
10. A method for installing an expansion valve, characterized in that, The installation method for assembling the expansion valve according to any one of claims 1-9 includes the following steps: Provided components: including a first outer valve body, a second outer valve body, an inner valve body, and a sealing ring; assemble the sealing ring with the inner valve body and / or the first outer valve body or the second outer valve body, wherein the inner valve body or the first outer valve body or the second outer valve body has a sealing groove provided around the interface portion, and insert the sealing ring into the sealing groove; The inner valve body, the first outer valve body, and the second outer valve body are assembled and fixed together. The first inner interface is positioned opposite to and connected to the first interface, and the second inner interface is positioned opposite to and connected to the second interface.
11. The installation method as described in claim 10, characterized in that, The installation method includes the following steps: The components provided also include: the first pipeline and the second pipeline; First, the first interface between the first pipeline and the first external valve body is sealed and fixed, and the second interface between the second pipeline and the second external valve body is sealed and fixed. Then, the sealing ring is assembled with the inner valve body and / or the first outer valve body or the second outer valve body, wherein the inner valve body or the first outer valve body or the second outer valve body has a sealing groove provided around the interface portion, and the sealing ring is inserted into the sealing groove. Next, the inner valve body, the first outer valve body with the first pipeline, and the second outer valve body with the second pipeline are assembled and fixed together. The first inner interface is positioned opposite to and connected to the first interface, and the second inner interface is positioned opposite to and connected to the second interface.