CN114811103A - Electromagnetic directional valve and main valve thereof - Google Patents
Electromagnetic directional valve and main valve thereof Download PDFInfo
- Publication number
- CN114811103A CN114811103A CN202210429022.4A CN202210429022A CN114811103A CN 114811103 A CN114811103 A CN 114811103A CN 202210429022 A CN202210429022 A CN 202210429022A CN 114811103 A CN114811103 A CN 114811103A
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- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 238000004891 communication Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000005057 refrigeration Methods 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- 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
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/061—Sliding valves
- F16K31/0617—Sliding valves with flat slides
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses an electromagnetic directional valve and a main valve thereof, wherein the main valve comprises a valve body, a valve seat with three working ports and a sliding block which is matched with the valve seat in a pressing way are arranged in the valve body, the middle part of a sealing surface of the sliding block, which is matched with the valve seat, is provided with a communicating cavity, and the valve body is provided with a fourth working port which is used for communicating with an exhaust end of a compressor; the sliding block can be switched between at least two working positions in a sliding mode relative to the valve seat, and a first working port, a second working port and a third working port on the valve seat are sequentially arranged along the sliding direction; and is configured to: when the sliding block is located at the first working position, the fourth working port is communicated with the third working port; and when the sliding block is positioned at the second working position, the fourth working port is communicated with the first working port, and the second working port is communicated with the third working port. The scheme can improve the applicability through structural optimization and provides technical support for effectively reducing the occupied space of system connection.
Description
Technical Field
The invention relates to the technical field of refrigeration control, in particular to an electromagnetic directional valve and a main valve thereof.
Background
The typical electromagnetic directional valve is used for switching a medium flow passage, and an inner cavity of a valve body is divided into a high-pressure sealed chamber and a low-pressure sealed chamber by a sliding block which is matched with a valve seat in a sliding mode. Under the working state, under the action of electromagnetic force generated by the coil, the pilot valve is driven to act and drive the main valve to move, and the medium circulation path is changed by switching the sliding working position, so that the function of switching the flow channel is achieved, and the function of switching the flow channel is realized.
Take an application to an air conditioning system as an example. When the air conditioner needs to refrigerate, high-temperature and high-pressure gas discharged by the compressor enters the solenoid valve D connecting pipe, enters an outdoor heat exchanger (condenser) → throttling element → an indoor heat exchanger (evaporator) → returning to the solenoid valve E connecting pipe through the solenoid valve C connecting pipe, passes through a low-pressure cavity sealed by matching of a slide block in the solenoid valve and a valve seat → returns to the compressor through the solenoid valve S connecting pipe, and therefore the refrigeration function is achieved in a circulating mode; when the air conditioner needs to heat, high-temperature and high-pressure gas discharged by the compressor enters the solenoid valve D connecting pipe, enters the indoor heat exchanger (condenser, evaporator in the refrigeration process) through the solenoid valve E connecting pipe → the throttling element → the outdoor heat exchanger (evaporator, condenser in the refrigeration process) → returns to the solenoid valve C connecting pipe, passes through the low-pressure cavity formed by the matching and sealing of the slide block and the valve seat in the solenoid valve → returns to the compressor through the solenoid valve S connecting pipe, and therefore the heating function is achieved in a circulating mode. In the processes of refrigeration and heating, low-pressure media flow back to the compressor through the low-pressure cavity of the electromagnetic directional valve again, so that the electromagnetic directional valve cannot be applied to the situation that only one channel of flow passage in the valve is required to be communicated in the refrigeration or heating state, and when the electromagnetic directional valve with the structure is applied to multi-channel connection of a system, the structure is not compact, and the occupied space is large.
Disclosure of Invention
In order to solve the technical problems, the invention provides the electromagnetic directional valve and the main valve thereof, which improve the applicability through structural optimization and provide technical support for effectively reducing the space occupation of system connection.
The invention provides a main valve of an electromagnetic directional valve, which comprises a valve body, wherein a valve seat with three working ports and a sliding block which is matched with the valve seat in a pressing mode are arranged in the valve body; the sliding block can be switched between at least two working positions in a sliding mode relative to the valve seat, and a first working port, a second working port and a third working port on the valve seat are sequentially arranged along the sliding direction; and is configured to: when the sliding block is located at the first working position, the fourth working port is communicated with the third working port; and when the sliding block is positioned at the second working position, the fourth working port is communicated with the first working port, and the second working port is communicated with the third working port.
Compared with the prior art, the scheme optimizes the sliding block to slide relative to the valve seat through the structure to switch the working positions, and the medium circulation path at one working position only passes through the primary main valve, so that the heat exchange system can be applied to a heat exchange system which only needs one path of flow passage in the valve to be communicated in a refrigerating or heating state, and the system is matched to close one path or two paths of flow passages, thereby achieving the specific requirements of the system function; and the valve elements on the connecting pipeline of the main valve system with the traditional structure can be reduced, the structure is compact, and the occupied space is small.
Drawings
FIG. 1 is a schematic structural diagram of a solenoid directional valve in a cooling state according to an embodiment;
FIG. 2 is a schematic structural diagram of the electromagnetic directional valve in a heating state according to the embodiment;
FIG. 3 is an axial view of the valve seat in an embodiment;
FIG. 4 is a schematic of the mating surface of the valve seat shown in FIG. 3;
FIG. 5 is an axial view of the slider in accordance with an exemplary embodiment;
fig. 6 is a cross-sectional view of the slider shown in fig. 5.
In the figure:
the main valve 10, the valve body 11, the valve seat 12, the material removing portion 121, the slider 13, the sealing surface 131, the first sealing portion 1311, the second sealing portion 1312, the communication chamber 132, the piston 14, the connecting rod 15, the first pipe attachment seat 16, the first pipe connection port 161, the second pipe connection port 162, the third pipe connection port 163, the second pipe attachment seat 17, the fourth pipe connection port 171, the pilot valve 20, the coil 30, the compressor 40, the indoor heat exchanger 50, the outdoor heat exchanger 60, the condenser 70, the orifice 80, and the gas-liquid separator 90.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
The electromagnetic directional valve provided by the embodiment comprises a main valve and a pilot valve communicated with the main valve, and in a refrigeration system, the electromagnetic directional valve can be switched between a first working position and a second working position to realize a refrigeration function and a heating function of the system respectively. Without loss of generality, the present embodiment describes the technical solution of the electromagnetic directional valve in detail by taking the overall operation objective of the heat pump system of the electric vehicle as an example, and it should be understood that other functions of the heat pump system of the electric vehicle constitute non-core invention points of the present application, and the electromagnetic directional valve claimed in the present application is not substantially limited.
Referring to fig. 1 and fig. 2, the overall structure of the electromagnetic directional valve according to the present embodiment is schematically shown, wherein fig. 1 is a schematic diagram in a cooling state, and fig. 2 is a schematic diagram in a heating state.
The main valve 10 of the electromagnetic directional valve comprises a valve body 11 of a tubular structure, a fourth working port D (normally open connection pipe D) connected with an exhaust port of the compressor 40 is arranged on the valve body 11, and the other three working ports are arranged on a valve seat 12, as shown in the figure, a first working port E, a second working port S and a third working port C are sequentially arranged along the sliding direction of a sliding block 13, wherein the first working port E is used for being connected with the indoor heat exchanger 50, the second working port S can be used for being communicated with an air inlet of the compressor 40, and the third working port C is used for being communicated with the outdoor heat exchanger 60.
The slider 13 press-fit onto the valve seat 12 is disposed in the valve body 11, a communicating cavity 132 is formed in the middle of a sealing surface 131 of the slider 13, which is slidably fitted to the valve seat 12, for communicating with the second working port S to form a low-pressure cavity, and a high-pressure cavity is formed between the slider 13 and the valve body 11 communicating with the fourth working port D. The valve seat 12 and the slider 13 form a pair of kinematic pairs, the piston 14 and the valve body 11 form another pair of kinematic pairs, and the piston 14 divides the inner cavity of the valve body 11 into three chambers, namely a left chamber (near an E port side), a middle chamber and a right chamber (near a C port side).
Under the action of the solenoid coil 30, the core iron of the pilot valve 20 drives the sliding bowl thereof to act, and the communication state of the corresponding capillary is respectively established, so that the pressure difference is formed between the left chamber and the right chamber of the main valve 10 by controlling, and the piston 14 and the connecting rod 15 of the main valve 10 drive the sliding block to slide on the surface of the valve seat 12 to be switched between two working positions: the cooling working position (first working position) and the heating working position (second working position) are used for switching the flowing direction of the cooling medium, so that the heating working state and the cooling working state of the heat pump system are switched. Is specifically configured to: when the slide block 13 is located at the first working position shown in fig. 1, the fourth working port D and the third working port C are communicated with each other, and in this working state, the refrigerant medium loop passes through the primary main valve only from the port D to the port C; when the slide block 13 is located at the second working position, the fourth working port D is communicated with the first working port E, and the second working port S is communicated with the third working port C.
It should be noted that the aforementioned valve internal flow-through relationship between the slider 13 and the slider 12 can be realized by different structures, such as, but not limited to, the different structural realization based on the center distance between the three working ports on the valve seat 12 shown in the figure. Referring to fig. 3 and 4 together, fig. 3 is an axial view of the valve seat, and fig. 4 is a structural view of the fitting surface of the valve seat.
As shown in the drawing, a first center distance L1 between the first and second work ports E and S on the valve seat 12 is larger than a second center distance L2 between the second and third work ports E and S, and the dimension of the communication chamber 132 of the slider 13 in the direction in which it slides is configured to be: when the first working position is located, the first working port E and the second working port S are non-conductive, as shown in fig. 1 specifically; when the second working position is located, the second working port S is conducted with the third working port C, as shown in fig. 2. On the basis, the through-flow mode of the flow channel in the valve can be realized by optimizing the sealing structure of the sliding block 13.
Accordingly, the dimensions of the communication chamber 131 of the slider 13 in the sliding direction are configured to: when the connecting cavity 131 is located at the first working position, the connecting cavity 131 is not communicated with the first working port E, and on the basis of the non-communicating relation between the connecting cavity 131 and the first working port E, the connecting cavity 131 is communicated with the second working port S or is not communicated with the second working port S, so that the non-communicating configuration function between the first working port E and the second working port S can be met; when the slide block 13 is located at the second working position, the communication cavity 131 of the slide block 13 is communicated with both the second working port S and the third working port C.
Further referring to fig. 5 and 6, fig. 5 is a schematic view of the slider on the axis, and fig. 6 is a schematic view of the slider in a cross section along the sliding direction. By definition, the region of the sealing surface 131 of the slide 13 on the side near the first working port E is the first sealing portion 1311, the region of the sealing surface of the slide 13 on the other side near the third working port C is the second sealing portion 1312,
as shown in fig. 1 and 2, when the first seal portion 1311 is located at the first operation position shown in fig. 1 on the projection plane parallel to the seal surface 131, the non-conduction between the communication chamber 131 and the first operation port E is formed by covering the first operation port E; of course, in the state shown in the figure, the second sealing portion 1312 at least partially covers the second working port S, and has no substantial effect on the non-conductive relationship between the first working port E and the second working port S when the slider 13 is located at the first working position.
Based on the dynamic fit relationship, the first center-to-center distance L1 between the first and second work ports E and S is at least twice the second center-to-center distance L2 between the second and third work ports E and S. It will be appreciated that the implementation of the above-described functional structure is arranged substantially along the sliding switching direction, in order to allow for a reasonable use of the structural dimensions in the sliding direction, preferably the first centre distance L1 is at least twice the second centre distance L2.
In addition, a material removing part 121 can be opened on the body of the valve seat 12 between the first working port E and the second working port S, and the material removing part 121 is positioned on the body surface of the valve seat 12 opposite to the valve body 11; so set up, through the structural style who gets rid of the material lighten part weight, balance first working port E and the increase of second working port S interval to a certain extent and set up the material weight that increases.
In addition, each connecting pipe and the valve body 11 can be designed in an integrated mode, and connecting pipe attachment seats (16 and 17) can be fixedly arranged outside the valve body 11 so as to facilitate the connection operation and reliability of each connecting pipe. As shown in the figure, the first connecting pipe attachment seat 16 is located outside the valve seat 12, a connecting pipe connection port respectively communicated with the first working port E, the second working port S and the third working port C is formed in the first connecting pipe attachment seat 16, the second connecting pipe attachment seat 17 is located outside the fourth working port D, and a connecting pipe connection port communicated with the fourth working port D is formed in the second connecting pipe attachment seat 17.
In order to further save the space utilization of the system external connection pipe system, the arrangement direction of the connection pipes can be further optimized. As shown in fig. 1 and 2, the second and third nozzle connection ports 162 and 163, which communicate the second and third working ports S and C, respectively, of the first nozzle attachment 16 are located on the outer surface of the first nozzle attachment 16 perpendicular to the sealing surface 131. Wherein the first nozzle connection port 161 communicating with the first working port E is located on the outer surface of the first nozzle attachment seat 16 parallel to the sealing surface 131, and the fourth nozzle connection port 171 communicating with the fourth working port D is also located on the outer surface of the second nozzle attachment seat 17 parallel to the sealing surface 131, so that the arrangement direction of the corresponding peripheral nozzles does not fully occupy the main valve radial peripheral space.
Of course, a preferred arrangement of the connection ports is shown. In fact, the compact construction of the system described above can be achieved to an extent that at least one of the connection pipe connection ports on the first and second connection pipe attachment seats 16, 17 is located on the outer surface of the respective connection pipe attachment seat perpendicular to the sealing surface.
The operation principle of the electromagnetic directional valve according to the present embodiment will be briefly described with reference to fig. 1 and 2.
Path through which the refrigerant medium inside the refrigeration mode system circulates: the discharge port of the compressor 40 → the D port of the main valve 10 → the middle chamber of the valve body 11 → the C port of the main valve → the outdoor heat exchanger 60 → the orifice member 80 → the indoor heat exchanger 50 → the gas-liquid separator 90 → the suction port of the compressor 40.
Path through which cooling medium inside heating mode system circulates: the discharge port of the compressor 40 → the D port of the main valve 10 → the middle chamber of the valve body 11 → the E port of the main valve 10 → the orifice member 80 → the outdoor heat exchanger 60 → the C port of the main valve 10 → the middle chamber of the valve body 11 → the S port of the main valve 10 → the gas-liquid separator 90 → the suction port of the compressor 40.
Of course, for the heat pump system of the electric vehicle, a constant high pressure condenser communicated with the exhaust port of the compressor 40 may be disposed in the cabin, that is, on the upstream side of the D port of the main valve 10 of the electromagnetic directional valve, so as to further perform high temperature and high pressure treatment on the refrigerant discharged from the compressor 40, so as to obtain better energy efficiency and reduce the influence on the endurance mileage.
In conclusion, the structure optimization is carried out on the sliding block and the valve seat of the main valve of the electromagnetic directional valve, the traditional flow path is changed, and the functions that the high-pressure loop is communicated and the low-pressure loop is not communicated during refrigeration and the high-pressure loop and the low-pressure loop are normally communicated during electrification and heating can be realized. In the refrigeration mode, the S port and the E port of the electromagnetic valve main valve are not communicated, so that when the refrigeration mode is performed, the refrigeration medium does not pass through the electromagnetic valve main valve 10 again before entering the gas-liquid separator 90, so that the high-pressure liquid medium is prevented from entering the low-pressure side, the configuration of a stop valve can be saved during system arrangement, and corresponding pipeline connection can be reduced. Therefore, the air conditioning system is applied to the vehicle air conditioning system, and the advantage of installing the air conditioning system in an integrated mode is more obvious.
It should be noted that, in the present embodiment, the components such as the sliding block and the valve seat can be made of various materials, including metals such as iron, stainless steel, and copper, and non-metal materials such as plastic and ceramic that meet the performance requirements, and it is within the scope of the present application that the technical means consistent with the core concept of the present solution is adopted. In addition, other valve elements and temperature control elements of the heat pump system are not the core invention of the present application and thus are not described herein again.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. A main valve of an electromagnetic directional valve comprises a valve body, a valve seat with three working ports and a sliding block which is matched with the valve seat in a pressing mode are arranged in the valve body, a communication cavity is formed in the middle of a sealing surface, matched with the valve seat, of the sliding block, and the valve body is provided with a fourth working port which is used for being communicated with an exhaust end of a compressor; the sliding block can be switched between at least two working positions in a sliding mode relative to the valve seat, and a first working port, a second working port and a third working port on the valve seat are sequentially arranged along the sliding direction; and is configured to: when the sliding block is positioned at the first working position, the fourth working port is communicated with the third working port; when the sliding block is located at the second working position, the fourth working port is communicated with the first working port, and the second working port is communicated with the third working port.
2. The main valve of the electromagnetic directional valve according to claim 1, wherein a first center distance between the first working port and the second working port on the valve seat is larger than a second center distance between the second working port and the third working port, and a dimension of the communication chamber of the slider in the sliding direction is configured to: when the first working position is located, the first working port and the second working port are not conducted; when the second working position is located, the second working port is communicated with the third working port.
3. The electromagnetic directional valve main valve according to claim 2, wherein a dimension of the communication chamber of the slider in the sliding direction is configured to: when the connecting cavity is located at the first working position, the connecting cavity is not communicated with the first working port, and the connecting cavity is not communicated with the second working port; and when the connecting device is positioned at the second working position, the communicating cavity is communicated with the second working port and the third working port.
4. The main valve of the electromagnetic directional valve according to claim 3, wherein a region of the sealing surface of the slider on one side near the first working port is a first sealing portion, and a region on the other side near the third working port is a second sealing portion, and the first sealing portion and the second sealing portion are configured to: the first sealing portion covers the first work port and the second sealing portion at least partially covers the second work port when in a first working position in a plane of projection parallel to the sealing surface.
5. The electromagnetic directional valve main valve according to any of claims 1 to 4, wherein the first center-to-center distance is at least twice the second center-to-center distance.
6. The main valve of the electromagnetic directional valve according to claim 5, wherein the body of the valve seat between the first working port and the second working port is provided with a material removing portion, and the material removing portion is located on a body surface of the valve seat opposite to the valve body.
7. The main valve of the electromagnetic directional valve according to claim 1, wherein a connection pipe attachment seat is fixedly provided outside the valve body, the first connection pipe attachment seat is located outside the valve seat, a connection pipe connection port that is respectively communicated with the first working port, the second working port, and the third working port is formed in the first connection pipe attachment seat, the second connection pipe attachment seat is located outside the fourth working port, and a connection pipe connection port that is communicated with the fourth working port is formed in the second connection pipe attachment seat.
8. The main valve of the electromagnetic directional valve according to claim 7, wherein at least one of the pipe connection ports on the first pipe attachment seat and the second pipe attachment seat is located on an outer surface of the corresponding pipe attachment seat perpendicular to the sealing surface.
9. The main solenoid valve according to claim 8, wherein the second and third connection pipe connection ports of the first connection pipe attachment seat, which communicate with the second and third operation ports, respectively, are located on an outer surface of the first connection pipe attachment seat perpendicular to the sealing surface.
10. A solenoid directional valve comprising a main valve and a pilot valve in communication with said main valve, wherein said main valve is a solenoid directional valve main valve as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210429022.4A CN114811103A (en) | 2022-04-22 | 2022-04-22 | Electromagnetic directional valve and main valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210429022.4A CN114811103A (en) | 2022-04-22 | 2022-04-22 | Electromagnetic directional valve and main valve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114811103A true CN114811103A (en) | 2022-07-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210429022.4A Pending CN114811103A (en) | 2022-04-22 | 2022-04-22 | Electromagnetic directional valve and main valve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114811103A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2388541A2 (en) * | 2010-05-17 | 2011-11-23 | Kabushiki Kaisha Saginomiya Seisakusho | Flow path switching valve |
| CN110274053A (en) * | 2018-03-13 | 2019-09-24 | 杭州三花研究院有限公司 | Fluid switching device and heat management system |
| WO2020039888A1 (en) * | 2018-08-23 | 2020-02-27 | 株式会社不二工機 | Flow passage switching valve |
| CN110926699A (en) * | 2019-11-08 | 2020-03-27 | 深圳精匠云创科技有限公司 | Rotor dynamic balance correction method and automation equipment using same |
| CN114704670A (en) * | 2022-04-22 | 2022-07-05 | 浙江三花智能控制股份有限公司 | Electromagnetic directional valve and main valve thereof |
-
2022
- 2022-04-22 CN CN202210429022.4A patent/CN114811103A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2388541A2 (en) * | 2010-05-17 | 2011-11-23 | Kabushiki Kaisha Saginomiya Seisakusho | Flow path switching valve |
| CN110274053A (en) * | 2018-03-13 | 2019-09-24 | 杭州三花研究院有限公司 | Fluid switching device and heat management system |
| WO2020039888A1 (en) * | 2018-08-23 | 2020-02-27 | 株式会社不二工機 | Flow passage switching valve |
| CN110926699A (en) * | 2019-11-08 | 2020-03-27 | 深圳精匠云创科技有限公司 | Rotor dynamic balance correction method and automation equipment using same |
| CN114704670A (en) * | 2022-04-22 | 2022-07-05 | 浙江三花智能控制股份有限公司 | Electromagnetic directional valve and main valve thereof |
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