CN116753320A - Electronic expansion valve and refrigeration equipment - Google Patents

Electronic expansion valve and refrigeration equipment Download PDF

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Publication number
CN116753320A
CN116753320A CN202310916504.7A CN202310916504A CN116753320A CN 116753320 A CN116753320 A CN 116753320A CN 202310916504 A CN202310916504 A CN 202310916504A CN 116753320 A CN116753320 A CN 116753320A
Authority
CN
China
Prior art keywords
valve
electronic expansion
conduit
expansion valve
seat body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310916504.7A
Other languages
Chinese (zh)
Inventor
曾庆军
陈超
杨茂
石志超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Welling Motor Manufacturing Co Ltd
Original Assignee
Guangdong Welling Motor Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Welling Motor Manufacturing Co Ltd filed Critical Guangdong Welling Motor Manufacturing Co Ltd
Priority to CN202310916504.7A priority Critical patent/CN116753320A/en
Publication of CN116753320A publication Critical patent/CN116753320A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/10—Welded housings
    • F16K27/102—Welded housings for lift-valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06—Details of flow restrictors or expansion valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The application discloses an electronic expansion valve and refrigeration equipment, wherein the electronic expansion valve comprises a valve seat and a conduit, the valve seat is provided with a valve port and a connecting groove which is annularly arranged at the valve port, the conduit is inserted into the connecting groove and fixedly connected with the connecting groove in a welding mode, the valve seat comprises a seat body and a connecting convex part which is convexly arranged on the seat body, and the valve port is arranged from the seat body to the connecting convex part in a penetrating way; the seat body and the connecting convex part are integrally formed; and/or the connecting groove is arranged on the seat body, and the guide tube is sleeved outside the connecting convex part. The technical scheme of the application aims to improve the connection stability of the guide pipe and the valve seat.

Description

Electronic expansion valve and refrigeration equipment
The application is a divisional application with the application number of 202210092688.5, and the application date of the main application is as follows: 2022, 01, 26; the application is named as follows: an electronic expansion valve and a refrigeration device.
Technical Field
The application relates to the field of electronic expansion valves, in particular to an electronic expansion valve and refrigeration equipment.
Background
The electronic expansion valve is an electromagnetic control component and is used for controlling the on-off of a medium or adjusting parameters such as the flow of the medium in an industrial control system, thereby realizing the expected control. In air conditioners, refrigerators, heat pump water heaters and various refrigeration systems, an electronic expansion valve is used for adjusting the refrigerating capacity of an evaporator and supplying an optimal amount of refrigerant to the evaporator so as to ensure the stable operation of the refrigeration system. However, in the existing electronic expansion valve, the connection stability between the conduit and the valve seat is poor, gaps and even separation are easily generated between the conduit and the valve seat, and potential safety hazards of refrigerant leakage exist.
Disclosure of Invention
The application mainly aims to provide an electronic expansion valve, which aims to improve the connection stability of a conduit and a valve seat.
In order to achieve the above object, the present application provides an electronic expansion valve, comprising:
the valve seat is provided with a valve port and a connecting groove which is annularly arranged on the valve port; and
the guide pipe is inserted into the connecting groove and fixedly connected with the connecting groove in a welding mode;
the valve seat comprises a seat body and a connecting convex part convexly arranged on the seat body, and the valve port is arranged from the seat body to the connecting convex part in a penetrating way;
the seat body and the connecting convex part are integrally formed;
and/or the connecting groove is arranged on the seat body, and the guide tube is sleeved outside the connecting convex part. .
Optionally, the connecting groove has feeding position and grafting position, the feeding position is located the grafting position be away from the one side of valve port, the pipe is inserted and is located the grafting position, the feeding position is used for supplying the solder to place.
Optionally, the feeding position ring is arranged at the plugging position.
Optionally, an inner wall surface of the conduit abuts against an outer wall surface of the connection protrusion.
Optionally, a first guiding part is arranged at one end of the catheter, which is close to the seat body, and optionally, a second guiding part is arranged at one end of the connecting convex part, which is far away from the seat body, so as to guide the catheter to be sleeved outside the connecting convex part.
Optionally, the first guide portion and/or the second guide portion is provided as a tapered surface.
Optionally, the inner diameter of the catheter is greater than 5mm.
Optionally, the guide pipe is fixedly connected to the connecting groove in a tunnel furnace welding mode.
Optionally, the material of the conduit is copper material or stainless steel material.
The application also provides refrigeration equipment comprising the electronic expansion valve.
In the technical scheme of the application, the guide pipe is inserted into and welded on the connecting groove on the valve seat to realize the fixed connection between the guide pipe and the valve seat, wherein the connecting groove is annularly arranged at the valve port, and the inner cavity of the guide pipe can be communicated with the valve port after the guide pipe is inserted into the connecting groove. In the electronic expansion valve, the welding part of the guide pipe and the valve seat is positioned in the connecting groove, the connecting groove can play a certain role in protecting the welding part of the guide pipe and the valve seat, the welding part of the guide pipe and the valve seat is not easy to be interfered by external impact, and the connecting stability of the guide pipe and the valve seat is guaranteed. Particularly, when the conduit is positioned below the valve seat after the electronic expansion valve is arranged on the refrigerating equipment, if condensed water is condensed on the outer wall of the electronic expansion valve, the condensed water flows down to the edge of the connecting groove along the outer wall of the valve seat and can not flow into the connecting groove, so that the welded part of the conduit and the valve seat is not easily corroded by the condensed water, and the connection stability of the conduit and the valve seat is further ensured.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a valve seat of an electronic expansion valve according to the present application;
FIG. 2 is a cross-sectional view of an embodiment of an electronic expansion valve of the present application;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a partial enlarged view at B in fig. 2.
Reference numerals illustrate:
reference numerals Name of the name Reference numerals Name of the name
100 Valve seat 131 Plug-in position
101 Valve port 132 Feeding level
110 Seat body 200 Catheter tube
120 Connection convex part 210 First guide part
121 Second guide part 300 Solder material
130 Connecting groove
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present application, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
The application provides an electronic expansion valve.
In one embodiment of the present application, as shown in fig. 1 and 2, the electronic expansion valve includes:
a valve seat 100 provided with a valve port 101 and a connecting groove 130 annularly provided on the valve port 101; and
the conduit 200 is inserted into the connection groove 130 and is fixedly connected to the connection groove 130 by welding.
In the technical scheme of the application, the guide pipe 200 is inserted into and welded to the connecting groove 130 on the valve seat 100 to realize the fixed connection between the guide pipe 200 and the valve seat 100, wherein the connecting groove 130 is annularly arranged on the valve port 101, and the inner cavity of the guide pipe 200 can be communicated with the valve port 101 after the guide pipe 200 is inserted into the connecting groove 130. In the electronic expansion valve of the application, the welding position of the conduit 200 and the valve seat 100 is positioned in the connecting groove 130, the connecting groove 130 can play a certain role in protecting the welding position of the conduit 200 and the valve seat 100, and the welding position of the conduit 200 and the valve seat 100 is not easy to be interfered by external impact, thereby being beneficial to ensuring the connection stability of the conduit 200 and the valve seat 100. Particularly, when the guide tube 200 is positioned under the valve seat 100 after the electronic expansion valve is mounted to the refrigerating apparatus, if condensed water is condensed on the outer wall of the electronic expansion valve, the condensed water flows down to the edge of the connection groove 130 along the outer wall of the valve seat 100, and drops down without flowing into the connection groove 130, thereby the welded portion of the guide tube 200 and the valve seat 100 is not easily corroded by the condensed water, and the connection stability of the guide tube 200 and the valve seat 100 is further ensured.
Further, in this embodiment, the connection groove 130 has a feeding portion 132 and a plugging portion 131, the feeding portion 132 is disposed on a side of the plugging portion 131 away from the valve port 101, the conduit 200 is plugged into the plugging portion 131, and the feeding portion 132 is used for placing the solder 300. When the pipe 200 and the valve seat 100 are welded, the pipe 200 is inserted into the insertion position 131, so that the pipe 200 and the valve seat 100 can be aligned, and the solder 300 placed in the feeding position 132 can flow into the joint position between the groove wall of the insertion position 131 and the pipe 200 after being melted, thereby fixing the pipe 200 to the connection groove 130 by the solder 300, and welding the pipe 200 to the valve seat 100. The welding is simple and convenient to operate, the production efficiency is improved, the connection reliability between the guide pipe 200 and the valve seat 100 is good, and the phenomena of off-welding and false welding can be effectively avoided. Of course, in other embodiments, the solder 300 may be directly abutted against the junction between the outer wall surface of the conduit 200 and the wall of the connecting groove 130, and then the solder 300 may be heated to melt, so that the conduit 200 may be fixed to the connecting groove 130 by soldering.
Further, in this embodiment, the feeding position 132 is disposed around the plugging position 131. It can be appreciated that in the present embodiment, the plugging portion 131 and the feeding portion 132 are both annular, but not limited to annular, and may be polygonal annular. In this way, the solder 300 can be set to be annular corresponding to the shape of the feeding position 132, and the solder 300 can uniformly flow into the joint of the guide pipe 200 and the valve seat 100 after being melted, so that the welding stability of the guide pipe 200 and the valve seat 100 can be guaranteed. Optionally, during welding, the welding ring may be placed at the feeding position 132 first, and then the conduit 200 is inserted into the insertion position 131, so that welding can be completed relatively quickly; or, the conduit 200 is inserted into the insertion position 131, and then the welding ring is sleeved outside the conduit 200, so that the welding ring can slide to the feeding position 132 along the outer wall of the conduit 200, and the welding ring does not need to be aligned when being placed, so that the operation is simpler. Of course, in other embodiments, the feeding area may be petal-shaped, and a plurality of feeding areas are arranged at intervals on the periphery of the plugging position 131, and at this time, a guiding structure for guiding the solder 300 to flow may be arranged in the feeding position 132 to ensure that the solder 300 flows uniformly, so as to ensure the welding stability of the conduit 200 and the valve seat 100.
Optionally, a guiding portion is further disposed between the insertion position 131 and the feeding position 132, and the guiding portion is configured to guide the solder 300 of the feeding position 132 to the insertion position 131, so as to promote the solder 300 of the feeding position 132 to flow toward the insertion position 131, which is beneficial to improving the efficiency of the welding operation. The guide portion is provided in a tapered surface structure, and can guide the flow of the solder 300 while ensuring the uniform flow of the solder 300. It will be appreciated that the diameter of the guide portion tapers from the end near the feed location 132 towards the end near the plug location 131. Of course, in other embodiments, the feeding portion 132 may be configured as a tapered surface structure, that is, the diameter of the feeding portion 132 gradually decreases from the end far from the plugging portion 131 toward the end near the plugging portion 131, so as to guide the solder 300 to flow toward the plugging portion 131.
Further, in the present embodiment, as shown in fig. 1 and 2, the valve seat 100 includes a seat body 110 and a connection protrusion 120 protruding from the seat body 110, and the valve port 101 is disposed to penetrate from the seat body 110 to the connection protrusion 120. In this way, the valve port 101 is extended, and a divergent region can be respectively arranged at two opposite sides of the throttle position of the valve port 101, so that the flow velocity of the refrigerant flowing into the conduit 200 through the divergent region is relatively reduced, the impact force of the refrigerant on the conduit 200 can be properly reduced, and the welding connection stability of the conduit 200 and the valve seat 100 is guaranteed. Of course, in other embodiments, the purpose of extending the valve port 101 may be achieved directly by thickening the valve seat 100.
Further, in the present embodiment, the seat body 110 is integrally formed with the connection protrusion 120. In the prior art, the valve seat 100 generally comprises a seat body 110 and a valve core seat which are separately arranged, the valve core seat is provided with a valve port 101 for the valve core to be detachably installed, the seat body 110 is provided with an installation opening for the valve core seat to be installed, the conduit 200 is abutted against the joint of the seat body 110 and the valve core seat, and then the valve core seat, the valve core seat and the valve core seat are fixed by welding. After being impacted by the refrigerant, the welding parts of the three parts are easy to fail, and any one part generates gaps or breaks away from the welding positions, so that the refrigerant leakage can be caused. In the present application, the seat body 110 and the connection protrusion 120 are integrally formed, that is, the valve seat 100 is integrally formed, and the valve seat 100 itself has no seam, so that leakage of the refrigerant from the valve seat 100 can be prevented.
Further, in the present embodiment, as shown in fig. 1, the connecting groove 130 is disposed on the seat body 110, and the catheter 200 is sleeved outside the connecting protrusion 120. That is, the welding portion of the conduit 200 and the valve seat 100 is located on the seat body 110, so that the refrigerant flowing out from the valve port 101 does not directly impact the welding portion of the conduit 200 and the valve seat 100, which is beneficial to guaranteeing the welding connection stability of the conduit 200 and the valve seat 100. Of course, in other embodiments, the connection groove 130 may be provided on the end surface of the connection protrusion 120, and the conduit 200 may be fixedly connected to the valve seat 100 by being connected to the connection protrusion 120 by welding.
Further, in the present embodiment, at least one of the conduit 200 and the connection protrusion 120 is provided with a guide portion for guiding the conduit 200 to sleeve the connection protrusion 120, so that a producer can more conveniently position the conduit 200 and the connection protrusion 120, and can more easily and more quickly sleeve the conduit 200 outside the connection protrusion 120, thereby improving the production efficiency of the electronic expansion valve.
In this embodiment, as shown in fig. 3, a first guiding portion 210 is disposed at an end of the catheter 200 near the seat body 110, as shown in fig. 4, a second guiding portion 121 is disposed at an end of the connecting protrusion 120 far away from the seat body 110, and the first guiding portion 210 and the second guiding portion 121 cooperate to guide the catheter 200 to be sleeved outside the connecting protrusion 120. Alternatively, the first guiding portion 210 or the second guiding portion 121 may be configured as an inclined surface or an arc surface, and may have a plurality of matching functions. It should be noted that, when the first guiding portion 210 and the second guiding portion 121 are both inclined surfaces, the two inclined surfaces are arranged in parallel, that is, arranged in parallel or approximately parallel, so that the guiding effect is better; when one of the first guide portion 210 and the second guide portion 121 is configured as a concave arc structure, the other one needs to be configured as a matched convex arc structure, so that the guiding function can be achieved.
Further, in the present embodiment, the first guide portion 210 and the second guide portion 121 are provided as tapered surfaces. That is, the first guide portion 210 and the second guide portion 121 are correspondingly disposed in an inclined plane structure and are disposed in an annular shape, so that the operation efficiency of the production personnel in sleeving the conduit 200 on the connection protrusion 120 can be further improved.
Further, in the present embodiment, as shown in fig. 2, the inner wall surface of the catheter 200 is abutted against the outer wall surface of the connection protrusion 120. In this way, the operation simplicity of the welding process can be improved, and after the pipe 200 is inserted into the connection groove 130, the pipe 200 is fixed to the valve seat 100, and welding between the pipe 200 and the valve seat 100 can be performed without separately sandwiching the pipe 200.
Further, in the present embodiment, as shown in fig. 2, the inner wall surface of the conduit 200 abuts against the groove wall of the connecting groove 130. Specifically, as shown in fig. 1 and 2, the outer wall surface of the connection protrusion 120 extends from the bottom of the connection groove 130, the outer wall surface of the connection protrusion 120 located in the connection groove 130 is the inner annular wall of the connection groove 130, and the inner wall surface of the conduit 200 is abutted against the outer wall surface of the connection protrusion 120, that is, the inner wall surface of the conduit 200 is abutted against the inner annular wall of the connection groove 130. Therefore, when the guide pipe 200 is inserted into the inserting groove, only the alignment between the guide pipe 200 and the connecting convex part 120 is needed once, the operation is very simple and convenient, and the production efficiency of the electronic expansion valve is improved. In addition, the connection between the guide tube 200 and the connection groove 130 is tighter, which is advantageous in improving the connection stability of the guide tube 200 and the connection groove 130, and further ensuring the welding connection stability of the guide tube 200 and the valve seat 100. Moreover, too much solder 300 is not contained between the inner wall surface of the guide pipe 200 and the inner circumferential wall of the connection groove 130, and insufficient solder 300 between the end surface of the guide pipe 200 and the bottom of the connection groove 130 is prevented from causing insufficient soldering or unstable soldering.
Further, in the present embodiment, both the inner wall surface of the guide pipe 200 and the outer wall surface of the connection protrusion 120 are provided as cylindrical surfaces. That is, the inner contour of the catheter 200 and the outer contour of the connection protrusion 120 are approximately equal circles, and excessive alignment is not necessary when the catheter 200 is fitted over the connection protrusion 120, thereby improving the operation efficiency. Further, the outer wall surface of the conduit 200 is also provided as a cylindrical surface, that is, the conduit 200 is provided as a circular tube structure, and the circular tube structure is regular, so that the production and the processing as well as the transportation and the storage of the conduit 200 are facilitated. It is understood that the plugging portion 131 as the plugging portion 131 is also correspondingly annular, and further, the feeding portion 132 is also annular. In fact, in the connecting slot 130, there is no obvious boundary between the plugging position 131 and the feeding position 132, as shown in fig. 1, the connecting slot 130 is integrally provided in a circular ring shape, as shown in fig. 2, after the conduit 200 is sleeved on the connecting protrusion 120 and inserted into the connecting slot 130, the aperture of the connecting slot 130 occupied by the conduit 200 is the plugging position 131, and the empty space of the connecting slot 130 is the feeding position 132.
Further, in this embodiment, the inner diameter of the catheter 200 is greater than 5mm. It can be understood that during refrigeration, the refrigerant throttles through the valve port 101 to generate flash evaporation phenomenon in the valve port 101 and the conduit 200, and the high-speed refrigerant flows along the central area of the inner cavity of the conduit 200, and the flow velocity in the area near the conduit wall is low, so that reflux is generated in the area near the conduit wall to impact the conduit wall. In the prior art, the inner diameter of the conduit of the electronic expansion valve is 4.95mm, the inner diameter is smaller, and the backflow impact is intense, in this embodiment, by increasing the inner diameter of the conduit 200, a large enough flow area is provided for backflow, which is favorable for reducing the pneumatic noise of backflow and reducing the impact of backflow on the inner wall surface of the conduit 200, on one hand, the mechanical vibration noise generated by the impact of the conduit 200 can be reduced, which is favorable for improving the noise performance of the electronic expansion valve, and on the other hand, the transmission of the excessive impact force to the welding position of the conduit 200 and the valve seat 100 can be avoided, so that the welding connection stability of the conduit 200 and the valve seat 100 is influenced.
Further, in this embodiment, the guide pipe 200 is fixedly connected to the connection groove 130 by means of tunnel furnace welding. The tunnel furnace has continuous working performance, the welding temperature is controlled automatically by an intelligent temperature controller, the workpiece transmission speed is adjustable, the welding efficiency is high, and the welding quality is high. The guide pipe 200 and the valve seat 100 are welded through the tunnel furnace, so that the welding stability of the guide pipe 200 and the valve seat 100 is guaranteed, and the production efficiency of the electronic expansion valve is improved.
Further, in the present embodiment, the material of the catheter 200 is copper or stainless steel. Thus, the catheter 200 has high structural strength and is not easily rusted.
The application also provides a refrigeration device, which comprises an electronic expansion valve, and the specific structure of the electronic expansion valve refers to the embodiment, and because the refrigeration device adopts all the technical schemes of all the embodiments, the refrigeration device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein. The refrigerating equipment can be an air conditioner, a refrigerator, a heat pump water heater and the like.
The foregoing description is only of the optional embodiments of the present application, and is not intended to limit the scope of the application, and all the equivalent structural changes made by the description of the present application and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the application.

Claims (8)

1. An electronic expansion valve, comprising:
the valve seat is provided with a valve port and a connecting groove which is annularly arranged on the valve port; and
the guide pipe is inserted into the connecting groove and fixedly connected with the connecting groove in a welding mode;
the valve seat comprises a seat body and a connecting convex part convexly arranged on the seat body, and the valve port is arranged from the seat body to the connecting convex part in a penetrating way;
the seat body and the connecting convex part are integrally formed;
and/or the connecting groove is arranged on the seat body, and the guide tube is sleeved outside the connecting convex part.
2. The electronic expansion valve of claim 1, wherein said connecting slot has a feed location and a plug location, said feed location being located on a side of said plug location remote from said valve port, said conduit being plugged into said plug location, said feed location being for solder placement.
3. The electronic expansion valve of claim 2, wherein said feed location is annularly disposed to said plug location.
4. The electronic expansion valve according to claim 1, wherein an inner wall surface of the conduit is in contact with an outer wall surface of the connection protrusion.
5. The electronic expansion valve according to claim 4, wherein a first guide portion is provided at an end of the guide tube near the seat body, and/or a second guide portion is provided at an end of the connection protrusion remote from the seat body, so as to guide the guide tube to be sleeved outside the connection protrusion.
6. The electronic expansion valve of claim 5, wherein the first guide portion and/or the second guide portion is provided as a tapered surface.
7. The electronic expansion valve of any of claims 1 to 6, wherein said conduit has an inner diameter greater than 5mm;
and/or the guide pipe is fixedly connected to the connecting groove in a tunnel furnace welding mode; and/or the material of the conduit is copper material or stainless steel material.
8. A refrigeration device comprising the electronic expansion valve of any of claims 1 to 7.
CN202310916504.7A 2022-01-26 2022-01-26 Electronic expansion valve and refrigeration equipment Pending CN116753320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310916504.7A CN116753320A (en) 2022-01-26 2022-01-26 Electronic expansion valve and refrigeration equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210092688.5A CN114607783A (en) 2022-01-26 2022-01-26 Electronic expansion valve and refrigeration equipment
CN202310916504.7A CN116753320A (en) 2022-01-26 2022-01-26 Electronic expansion valve and refrigeration equipment

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN202210092688.5A Division CN114607783A (en) 2022-01-26 2022-01-26 Electronic expansion valve and refrigeration equipment

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Publication Number Publication Date
CN116753320A true CN116753320A (en) 2023-09-15

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CN202310916504.7A Pending CN116753320A (en) 2022-01-26 2022-01-26 Electronic expansion valve and refrigeration equipment

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CN103174860B (en) * 2011-12-22 2015-09-09 浙江三花股份有限公司 The fixed structure of a kind of adapter and valve seat
CN108506548B (en) * 2017-02-24 2022-03-08 浙江盾安机械有限公司 Electronic expansion valve
CN209100732U (en) * 2018-08-31 2019-07-12 浙江盾安禾田金属有限公司 Air-conditioning system and its expansion valve
CN213954384U (en) * 2020-12-14 2021-08-13 广东威灵电机制造有限公司 Valve body assembly, electronic expansion valve and refrigeration equipment
CN112503197A (en) * 2020-12-14 2021-03-16 广东威灵电机制造有限公司 Valve body assembly, electronic expansion valve and refrigeration equipment
CN215371212U (en) * 2021-07-19 2021-12-31 广东威灵电机制造有限公司 Electronic expansion valve and refrigeration equipment

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