CN117366275A - Injector and thermal management system - Google Patents
Injector and thermal management system Download PDFInfo
- Publication number
- CN117366275A CN117366275A CN202210774212.XA CN202210774212A CN117366275A CN 117366275 A CN117366275 A CN 117366275A CN 202210774212 A CN202210774212 A CN 202210774212A CN 117366275 A CN117366275 A CN 117366275A
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- Prior art keywords
- valve
- guide
- injector
- communication
- channel
- Prior art date
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- 238000004891 communication Methods 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 21
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims 1
- 230000005284 excitation Effects 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 37
- 239000000306 component Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000008358 core component Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
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- 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
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Valve Housings (AREA)
Abstract
The utility model provides an sprayer and thermal management system is provided with first guiding portion in the first chamber that holds of disk seat, first guiding portion have with the first cooperation portion direction complex guiding hole of valve rod, and first guiding portion still includes elastic component, and elastic component is followed the circumference of guiding portion distributes, in the time of can leading the case subassembly like this, allows the case subassembly to have certain skew again, is favorable to preventing case subassembly card and dies, and then improves the stability of sprayer.
Description
Technical Field
The present application relates to the field of fluid management, and in particular to an injector and thermal management system.
Background
In an air conditioning system or a thermal management system, an injector is a common element, and a valve core in the injector needs to be matched with a valve port so as to adjust the opening degree of the valve port, if the valve core deviates beyond a preset range, the performance of the injector is easy to be unstable.
Disclosure of Invention
An object of the present application is to provide an injector and a thermal management system, which are beneficial to improving the stability of the injector.
In order to achieve the above object, an embodiment of the present application adopts the following technical scheme: an injector comprises a valve seat, a valve core assembly and a first guide part, wherein the valve seat is provided with a communication port, a first accommodating cavity and a valve port, the communication port is communicated with the first accommodating cavity, at least part of the valve core assembly is positioned in the first accommodating cavity, the valve core assembly comprises a valve rod and a valve core, and the valve core can adjust the opening of the valve port;
the first guide part is positioned in the first accommodating cavity and is fixedly connected or in limit connection with the valve seat, the first guide part is provided with a guide hole, the valve rod comprises a first matching part, the first matching part is positioned in the guide hole, the first matching part is far away from the valve port than the valve core, the first matching part is in guide matching with the wall forming the guide hole, the first guide part comprises elastic parts, and the elastic parts are distributed along the circumferential direction of the guide part.
Another embodiment of the present application adopts the following technical scheme: the utility model provides a thermal management system, includes compressor, condenser, first evaporimeter, second evaporimeter throttling element, gas-liquid separator and above-mentioned sprayer, the compressor passes through the condenser with the first import intercommunication of sprayer, the export of sprayer passes through the second evaporimeter with the first interface intercommunication of gas-liquid separator, the second interface of gas-liquid separator with the entry intercommunication of compressor, the third interface of gas-liquid separator passes through throttling element with first evaporimeter intercommunication, the export of first evaporimeter with the second import intercommunication of sprayer.
The above-mentioned embodiment of this application provides sprayer and thermal management system, is provided with first guiding portion in the first chamber that holds of disk seat, first guiding portion have with the first cooperation portion direction complex guiding hole of valve rod, and first guiding portion still includes the elastic component, and the elastic component is followed the circumference of guiding portion distributes, in the time of can leading the case subassembly like this, allows the case subassembly to have certain skew again, is favorable to preventing case subassembly card and dies, and then improves the stability of sprayer.
Drawings
FIG. 1 is a schematic perspective view of one embodiment of an injector;
FIG. 2 is a schematic front view of the injector of FIG. 1;
FIG. 3 is a schematic cross-sectional view of FIG. 2 taken along line B-B;
FIG. 4 is another cross-sectional schematic view of FIG. 2 taken along line B-B;
FIG. 5 is a schematic perspective view of the first guide portion of FIG. 1;
FIG. 6 is a schematic top view of the first guide of FIG. 5;
FIG. 7 is a schematic cross-sectional view of one embodiment of the first guide of FIG. 1;
FIG. 8 is a schematic cross-sectional view of another embodiment of the first guide of FIG. 1;
FIG. 9 is a schematic diagram of a connection of a thermal management system.
Detailed Description
The present application is further described with reference to the accompanying drawings and specific examples:
referring to fig. 9, the thermal management system in this embodiment can be applied to a new energy automobile, and the thermal management system includes a first evaporator 60 and a second evaporator 40, where the first evaporator 60 may be located in an air conditioning box for adjusting the temperature in the cabin, and the second evaporator 40 may be used for adjusting the temperature of the battery so that the battery works in a reasonable temperature range, and the second evaporator 40 may be a direct cooling plate or a plate heat exchanger, so as to be beneficial to improving the heat exchange efficiency of the battery and prolonging the service life of the battery.
The working medium of the thermal management system includes a refrigerant, which may be carbon dioxide or R134a, etc., specifically, the thermal management system includes a compressor 10, a condenser 20, an ejector 30, a second evaporator 40, a gas-liquid separator 50, and a first evaporator 60, the ejector 30 includes a first inlet 31, a second inlet 32, and an outlet 33, the gas-liquid separator 50 includes a first port 501, a second port 502, and a third port 503, where the first port 501 is an inlet of the refrigerant in a gas-liquid mixture state, the second port 502 is an outlet of the gaseous refrigerant, and the third port 503 is an outlet of the liquid refrigerant. The outlet of the compressor 10 communicates with the inlet of the condenser 20, the outlet of the condenser 20 communicates with the first inlet 31 of the ejector 30, the outlet 33 of the ejector 30 communicates with the inlet of the second evaporator 40, the outlet of the second evaporator 40 communicates with the first port 501 of the gas-liquid separator 50, the second port 502 of the gas-liquid separator 50 communicates with the inlet of the compressor 10, the third port 503 of the gas-liquid separator 50 communicates with the inlet of the first evaporator 60 through a throttling element, the outlet of the first evaporator 60 communicates with the second inlet 32 of the ejector 30, and the refrigerant entering the ejector 30 through the second inlet 32 and the refrigerant entering the ejector 30 through the first inlet 31 are mixed and enter the second evaporator 40. The above communication includes direct communication, communication through a pipe, communication through other elements, and communication through a pipe and other elements. The ejector is provided with three interfaces, so that connection with other parts in the thermal management system can be simplified, and meanwhile, the ejector realizes flow regulation, so that the pressure of the refrigerant passing through the second evaporator is regulated, and the temperature of the refrigerant entering the second evaporator 40 can be in a proper range, thereby being beneficial to improving the heat exchange efficiency of the battery and prolonging the service life of the battery.
Referring to fig. 1-4, the ejector 30 includes a valve body 34, a first inlet 31, a second inlet 32, and an outlet 33 formed with the valve body 34, and further includes a first passage 35, a second passage 36, and a third passage 37, wherein the first passage 35 communicates with the first inlet 31, the first passage 35 is an inflow passage of the refrigerant, the second passage 36 communicates with the second inlet 32, the second passage 36 is another inflow passage of the refrigerant, the third passage communicates with the outlet 33, and the third passage 37 is an outflow passage of the refrigerant, wherein the third passage 37 includes a mixing portion 371 and a diffusing portion 372, the refrigerant of the first passage 35 and the refrigerant of the second passage 36 are mixed at the mixing portion 371, the refrigerant of the mixing portion 371 passes through the diffusing portion 372 and communicates with the outlet 33, a flow cross-sectional area of the diffusing portion 372 near the outlet 33 is larger than a flow cross-sectional area of the diffusing portion 372 near the mixing portion 371, and the flow cross-sectional area of the diffusing portion 372 gradually increases. In this way, the mixing portion 371 and the diffusing portion 372 may be designed according to the cooling requirement, the diffusing portion 372 and the outlet 33 may further include a buffer portion 373, the diameter of the inner hole of the buffer portion 373 is the same as the diameter of the inner hole of the end of the diffusing portion 372, and the diameter of the inner hole of the buffer portion 373 is the same as the inner hole of the outlet, so that the temperature of the second evaporator is in a reasonable range, such as 18-35 ℃ when determining the heat exchange condition of the evaporator and the superheat condition after throttling.
In this embodiment, the second evaporator 40 may be disposed close to the battery and directly exchange heat with the battery through the refrigerant, or two channels, such as a plate heat exchanger, may be disposed in the second evaporator 40, where one channel is used for refrigerant circulation and the other channel is used for cooling liquid circulation, and the refrigerant and the cooling liquid exchange heat with the battery in the second evaporator 40.
Referring to fig. 1 to 4 and 9, when the thermal management system is operated, high temperature and high pressure refrigerant discharged from the compressor 10 enters the condenser 20, the refrigerant passing through the condenser 20 is cooled, then the refrigerant enters the ejector 30 through the first inlet 31 of the ejector 30, the refrigerant flowing out of the outlet 33 of the ejector 30 enters the second evaporator 40, the refrigerant passing through the second evaporator 40 enters the gas-liquid separator 50 through the first interface 501 of the gas-liquid separator 50, the refrigerant is separated into a gas phase refrigerant and a liquid phase refrigerant in the gas-liquid separator 50, the gas phase refrigerant is sucked into the inlet of the compressor 10 through the second interface 502 of the gas-liquid separator 50, and the liquid phase refrigerant enters the first evaporator 60 through the third interface 503 of the gas-liquid separator; the refrigerant flowing through the first evaporator 60 enters the ejector 30 through the second inlet 32 of the ejector 30, the refrigerant entering the ejector 30 through the second inlet 32 of the ejector 30 is mixed with the refrigerant entering the ejector 30 through the first inlet 31 at the mixing portion 371, so that the temperature of the refrigerant at the mixing portion is higher than the evaporation temperature entering the second evaporator due to the mixing through the first evaporator flow path, and the mixed refrigerant is diffused through the diffusion portion 372 to enter the second evaporator 40. In this embodiment, the thermal management system further includes a control valve 38, where the control valve 38 is disposed between the first evaporator 60 and the gas-liquid separator 50, and the on-off of the flow path and the flow rate are controlled by the control valve 38. It should be noted that, when the battery temperature is low or no load is applied, the evaporation amount of the refrigerant entering the second evaporator 40 is small, or no heat exchange occurs, which does not affect the operation of the whole system, and the heat management system can be controlled by adjusting the flow rate of the first inlet 31 of the ejector and the flow rate of the control valve entering the first evaporator 60, so that the efficient operation of the heat management system is realized; also, when the first evaporator 60 is loaded relatively low, or no load, the opening of the control valve 38 may be controlled to reduce or shut off the first evaporator 60 flow, and the load of the second evaporator 40 is regulated by the first inlet 31 flow of the ejector 30.
Referring to fig. 3 and 4, the injector 30 includes a control portion 1, a stator assembly 2, a rotor assembly 3, a valve core assembly 4, a valve seat 5, a sleeve 6 and a valve body 34, the control portion 1 includes a housing 11 and a control board 12, the housing 11 is fixedly connected with the stator assembly 2, in this embodiment, a lower shell of the housing 11 is injection-molded and fixed with the stator assembly 2, an upper shell of the housing 11 is welded with a lower shell of the housing 11 by ultrasonic or laser, the housing 11 is fixed with the valve body 34 by a screw, and the stator assembly 2, the control portion 1 and the valve body 34 are fixed. The control board 12 is disposed in the inner cavity of the housing 11, and the control board 12 is electrically connected with the stator assembly 2 and controls the power on or power off of the stator assembly 2. In this embodiment, the injector further includes a nut component 13, the screw rod of the valve core component 4 is in threaded fit with the nut component 13, the nut component 13 includes a third guiding portion 103, the valve core component 4 includes a third matching portion, and the third guiding portion 103 is in guiding fit with the third matching portion, so as to guide the valve core component 4. The stator assembly 2 is arranged on the periphery of the rotor assembly 3, the sleeve 6 isolates the rotor assembly 3 from the stator assembly 2, the rotor assembly 3 is arranged on the inner periphery of the sleeve 6, the stator assembly 2 is arranged on the outer periphery of the sleeve 6, the rotor assembly 3 can drive the valve core assembly to move, the valve seat 5 is fixedly arranged relative to the valve body 34, the valve seat 5 is provided with a first accommodating cavity 506 and a valve port 8, at least part of the valve core assembly 4 is positioned in the first accommodating cavity 506, the valve core assembly 4 comprises a valve rod 41 and a valve core 42, the valve rod 41 and the valve core 42 are integrally or fixedly connected, the valve core 42 of the valve core assembly 4 can move relative to the valve port 8, and the valve core of the valve core assembly 4 can adjust the flow cross section area of the valve port 8 so as to control the flow of refrigerant passing through the valve port 8.
Referring to fig. 4, the valve body 34 has a mounting cavity 341, the valve seat 5 is accommodated in the mounting cavity 341, the valve seat 5 includes a connecting portion 51, a first side portion 52 and a second side portion 53, the first side portion 52 extends from the connecting portion 51 toward one side of the stator assembly 2 along an axial direction of the valve seat, the second side portion 53 extends from one side of the connecting portion facing away from the stator assembly 2, that is, the first side portion 52 and the second side portion 53 extend in two different directions of the connecting portion 51 with respect to the connecting portion 51; the connecting portion 51 is fixed or limited relative to the valve body 34, the outlet of the first channel 35 is located at one side of the connecting portion 51, the outlet of the second channel 36 is located at the other side of the connecting portion 51, the connecting portion 51 and the valve body 34 are relatively fixed, a sealing ring 345 is arranged at the connecting portion between the limiting portion 51 and the valve body 34, the connecting portion 51 divides the mounting cavity 341 into a first cavity 391 and a second cavity 392, the first cavity 391 is communicated with the first channel 35, the second cavity 392 is communicated with the second channel 36, and the first cavity 391 and the second cavity 392 can be communicated through the valve port 8. Specifically, the first side portion 52 extends from the connection portion 51 toward the first cavity 391, and the second side portion 53 extends from the connection portion 51 toward the second cavity 392. Of course, the second channel may also be in direct communication with the mixing section.
The valve seat 5 further includes a second guiding portion 521, the second guiding portion 521 has a guiding portion cavity 505, the second matching portion 402 of the valve element assembly 4 is disposed in the guiding portion cavity 505, and the second matching portion 402 is slidably matched with the second guiding portion 521, so as to prevent the valve element assembly 4 from shifting along a radial direction of the valve seat, thereby being beneficial to ensuring coaxiality of the valve element 42 and the valve port. In this embodiment, the second guiding portion 521 is integrally or fixedly connected with the valve rod 41, the second guiding portion 521 is closer to the rotor assembly than the valve rod 41, a portion of the inner wall of the first side portion 52 forms the second guiding portion 521, the second matching portion of the valve core assembly 4 can move along the inner side of the guiding portion 521, the first side portion 52 forms a communication port 522, the communication port 522 communicates with the first cavity 391, and when the thermal management system is in operation, the refrigerant enters the first channel 35 through the first inlet 31, the first channel 35 communicates with the first cavity 391, the refrigerant communicates with the first accommodating cavity 506 through the first cavity 391, and the refrigerant of the first accommodating cavity 506 communicates with the mixing portion 371 through the valve port 8.
In this embodiment, the first channel 35 is disposed on one side of the mounting cavity 341, the second channel 36 is disposed on the other side of the mounting cavity 341, the first channel 35 is disposed perpendicular to the outlet channel 37, the second channel 36 is disposed perpendicular to the outlet channel 37, the outlet of the second channel 36 is closer to the connecting portion than the valve port 8, the valve seat 5 includes a tapered portion 55, the valve port 5 is disposed at an end portion of the tapered portion 55, and the outlet of the second channel 36 is disposed opposite to at least the tapered portion 55 along the axial direction of the injector 30. The axial direction of the injector 30 as described herein refers to the axial direction of the valve element assembly 4, and for purposes of describing the positional relationship, the rotor assembly is defined above the valve port 8, and the valve seat 5 may be considered coaxial with the valve element assembly 4.
The injector of the present embodiment further includes a connection seat 9, at least a portion of the connection seat 9 is accommodated in the installation cavity 341 of the valve body 34, the connection seat 9 is connected with the valve body 34 through threads or clamped by a clamp spring, the connection seat 9 is fixedly welded with the sleeve 6 through the connection seat 9 and fixedly connected with the valve body 34, and then the sleeve 6 is fixedly connected with the valve body 34.
Referring to fig. 3-8, the injector 30 further includes a first guiding portion 70, where the first guiding portion 70 is located in the first accommodating cavity 506 of the valve seat 5, the first guiding portion 70 is fixedly connected or limitedly connected with the valve seat 5, the first guiding portion 70 has a guiding hole 73, a portion of the valve rod 41 is located in the guiding hole 73, the guiding hole 73 penetrates through the first guiding portion 70 along the axial direction of the first guiding portion 70, the valve rod 41 includes a first matching portion 401, and the first matching portion 401 is located between the valve core 42 and the second matching portion 402, and the first matching portion 401 is slidably matched with a wall forming the guiding hole 73, so that positioning of the valve core 42 is facilitated, a situation that the valve core 42 is not coaxial with the valve port is reduced, or a swinging range of the valve core 42 in a radial direction is reduced, collision between the valve core 42 and the wall forming the valve port is also facilitated, especially when the valve is closed, internal leakage is also facilitated to be reduced.
The first guiding portion 70 further comprises an elastic portion 75, in particular, the elastic portion 75 is distributed along the circumferential direction of the first guiding portion 70, wherein the circumferential direction includes a continuous circumferential direction, and may be a discrete circumferential direction, for example, the elastic portion 75 may be a branch portion 72. The elastic portion 75 extends along the axial direction of the first guide portion 70, specifically, the elastic portion 75 extends from one end portion of the first guide portion 70 to the other end portion of the first guide portion 70, and due to the existence of the elastic portion 75, the valve rod 41 is allowed to have a certain radial offset during operation, so that the valve core assembly 4 is prevented from being blocked during operation. This is because the spool assembly 4 is guided by the first guide portion 70, the second guide portion 521 and the third guide portion 103, which easily causes deviation in coaxiality of the spool assembly 4, and the elastic portion 75 is provided at the first guide portion 70, so that the spool assembly can have a certain radial deviation during rotation, which is advantageous for preventing the spool assembly 4 from being stuck during operation. The elastic portions 75 are distributed along the circumferential direction of the first guide portion 70, the radial offset of the valve core assembly 4 can be any angle, and the elastic portions 75 can be made of polytetrafluoroethylene or polyetheretherketone or polyamide 66 or nylon 66 or polyphenylene sulfide.
In a specific embodiment, as illustrated in fig. 5, the material of the elastic portion 75 is the same as that of the other portions of the first guide portion 70, and the first guide portion 70 is of an integral structure, so that the first guide portion 70 is easy to manufacture. In addition, the first guiding portion 70 may also include a first member 76, as shown in fig. 7, where the elastic modulus of the first member 76 is greater than the elastic modulus of the elastic portion 75, the material of the first member 76 may be metal, such as aluminum or copper, and the first member 76 is fixedly connected or limited to the elastic portion 75, where the fixed connection includes injection molding. In the present embodiment, the elastic portion 75 is located inside the first member 76 in the radial direction of the first guide portion 70, that is, the wall forming the guide hole 73 is located at the elastic portion 75, and the first member 76 is fixedly or limitedly connected to the valve seat 5. It will be appreciated that the resilient portion 75 may be located radially inwardly of the first member 76 in the first guide portion 70, where the resilient portion 75 is fixedly or positively secured to the valve seat and the guide aperture 73 is located in the first member 76. In addition, as shown in fig. 8, the first component may also include a first sub-portion 761 and a second sub-portion 762, and at least part of the elastic portion 75 is located between the first sub-portion 761 and the second sub-portion 762 along the radial direction of the guide portion, where the wall forming the guide hole 73 is located in the first sub-portion 761, and the second sub-portion 762 is fixedly connected or limitedly connected with the valve seat 5.
As illustrated in fig. 3 and 4, in order to bring the first guide portion 70 closer to the valve port, the guide action of the first guide portion 70 is enhanced, and at least part of the first guide portion 70 is located between the valve port and the communication port 522 in the axial direction of the injector. Thus, the injector further includes the communication passage 90, and the communication passage 90 is used to communicate the communication port 522 and the valve port 8, so that the communication port 522 can communicate with the valve port 8 through the communication passage 90. In a specific embodiment, the communication passage 90 is formed in the first guide portion 70, the communication passage 90 penetrates the first guide portion 70, and the communication passage 90 has openings in both the upper wall and the lower wall of the first guide portion 70, and the communication passage 90 is generally closer to the valve seat than the guide hole 73. In another embodiment, the wall forming the communication channel 90 includes the wall of the first guide portion 70 and the inner wall of the valve seat, or, in other words, the communication channel 90 is formed by surrounding at least the first guide portion 70 and the valve seat, specifically, the first guide portion 70 includes a main body portion and a branch portion, the guide hole 73 is formed in the main body portion, the branch portion protrudes toward the valve seat relative to the main body portion, along the circumferential direction of the first guide portion 70, the branch portions are disposed at intervals, and the wall forming the communication channel 90 includes the wall of the adjacent branch portion and the inner wall of the valve seat between the adjacent branch portions, which is advantageous in reducing the weight of the guide portion.
The first guide portion 70 is fixedly connected or in limited connection with the valve seat 5, and the first guide portion 70 can be in interference fit with the valve seat. In addition, the injector 30 may further include a fastener 77, the fastener 77 being located in the first receiving cavity 506, the fastener 77 having a through hole through which the valve stem 41 passes, the fastener 77 being in interference fit with the valve seat, the valve seat 5 including a stepped portion, the first guide 70 being located between the stepped portion and the fastener 77, the first guide being in contact with the fastener. Of course, the first guiding portion may be fixedly connected or in a limiting connection with the valve seat in other manners, such as welding, further may be laser welding, and in addition, the fastening member may be a clamping spring, and the fastening member is clamped with the valve seat.
It should be noted that: the above embodiments are only for illustrating the present application and not for limiting the technical solutions described in the present application, for example, the definitions of "front", "rear", "left", "right", "upper", "lower", etc., and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present application may be modified or substituted by the same, and all technical solutions and modifications thereof without departing from the spirit and scope of the present application should be covered by the scope of the claims of the present application.
Claims (10)
1. An injector comprises a valve seat, a valve core assembly and a first guide part, wherein the valve seat is provided with a communication port, a first accommodating cavity and a valve port, the communication port is communicated with the first accommodating cavity, at least part of the valve core assembly is positioned in the first accommodating cavity, the valve core assembly comprises a valve rod and a valve core, and the valve core can adjust the opening of the valve port;
the first guide part is positioned in the first accommodating cavity and is fixedly connected or in limit connection with the valve seat, the first guide part is provided with a guide hole, the valve rod comprises a first matching part, the first matching part is positioned in the guide hole, the first matching part is far away from the valve port than the valve core, the first matching part is in guide matching with the wall forming the guide hole, the first guide part comprises elastic parts, and the elastic parts are distributed along the circumferential direction of the guide part.
2. The injector of claim 1, wherein: the elastic portion extends from one end portion of the first guide portion to the other end portion of the first guide portion in an axial direction of the first guide portion.
3. The injector of claim 1 or 2, characterized in that: the elastic part is made of the same material as the guide part, and the guide part is of an integrated structure; or, the elastic part comprises a first component, the elastic modulus of the first component is larger than that of the elastic part, and the first component is fixedly connected or in limit connection with the elastic part.
4. An injector as claimed in claim 3, wherein: a wall forming the guide hole is positioned at the elastic part; alternatively, the elastic portion abuts against a wall forming the first accommodation chamber; or, the first component includes a first sub-portion and a second sub-portion, at least a part of the elastic portion is located between the first sub-portion and the second sub-portion along a radial direction of the guide portion, a wall forming the guide hole is located at the first sub-portion, and the second sub-portion abuts against a wall forming the first accommodating cavity.
5. The injector of any one of claims 1-4, wherein: at least part of the first guide part is positioned between the valve port and the communication port along the axial direction of the injector; the injector further comprises a communication channel, wherein the communication channel is positioned in the valve seat and is communicated with the communication port, and the communication channel is communicated with the valve port.
6. The injector of claim 5, wherein: the communication channel penetrates through the first guide part along the axial direction of the ejector; the communication passage is formed in the first guide portion, or a wall forming the communication passage includes a wall of the first guide portion and an inner wall of the valve seat.
7. The injector of claim 6, wherein: the first guide part comprises a main body part and a branch part, the branch part protrudes towards the valve seat relative to the main body part, the branch parts are arranged at intervals along the circumferential direction of the first guide part, the wall forming the communication channel comprises walls adjacent to the branch part, and the guide hole is formed in the main body part.
8. The injector of claim 7, wherein: the injector further comprises a fastener, the fastener is located in the first accommodating cavity, the fastener is provided with a through hole for a valve rod to pass through, the fastener is in interference fit or clamping connection with the valve seat, the valve seat comprises a step part, the guide part is located between the step part and the fastener, and the guide part is in contact with the fastener.
9. The injector of claim 8, wherein: the injector comprises a valve body, wherein the valve body is provided with a first inlet, a second inlet, an outlet, a first channel, a second channel, a mounting cavity and an outlet channel, the outlet channel comprises a mixing part and a diffusion part, the first inlet is communicated with the first channel, the second inlet is communicated with the second channel, the second channel is communicated with the mixing part through the mounting cavity, the diffusion part is communicated with the mixing part and the outlet, the valve seat is accommodated in the mounting cavity, and the valve seat is fixedly arranged relative to the valve body;
the stator assembly is arranged on the periphery of the rotor assembly, after the stator assembly is electrified, the rotor assembly can rotate in an excitation magnetic field generated by the stator assembly, the rotor assembly drives the valve core assembly to move, a valve core of the valve core assembly can move close to or far away from the valve port, the valve core of the valve core assembly can control the flow cross section area of the valve port, and the first channel and the outlet channel can be communicated through the valve port.
10. A thermal management system comprising a compressor, a condenser, a first evaporator, a second evaporator throttling element, a gas-liquid separator, and an ejector according to any of claims 1-9, the compressor being in communication with a first inlet of the ejector through the condenser, an outlet of the ejector being in communication with a first interface of the gas-liquid separator through the second evaporator, a second interface of the gas-liquid separator being in communication with an inlet of the compressor, a third interface of the gas-liquid separator being in communication with the first evaporator through the throttling element, an outlet of the first evaporator being in communication with a second inlet of the ejector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210774212.XA CN117366275A (en) | 2022-07-01 | 2022-07-01 | Injector and thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210774212.XA CN117366275A (en) | 2022-07-01 | 2022-07-01 | Injector and thermal management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117366275A true CN117366275A (en) | 2024-01-09 |
Family
ID=89404664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210774212.XA Pending CN117366275A (en) | 2022-07-01 | 2022-07-01 | Injector and thermal management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117366275A (en) |
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2022
- 2022-07-01 CN CN202210774212.XA patent/CN117366275A/en active Pending
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