CN214699222U - Elastic balance type electronic expansion valve with large-caliber on-off function - Google Patents
Elastic balance type electronic expansion valve with large-caliber on-off function Download PDFInfo
- Publication number
- CN214699222U CN214699222U CN202120643312.XU CN202120643312U CN214699222U CN 214699222 U CN214699222 U CN 214699222U CN 202120643312 U CN202120643312 U CN 202120643312U CN 214699222 U CN214699222 U CN 214699222U
- Authority
- CN
- China
- Prior art keywords
- valve
- electronic expansion
- expansion valve
- function
- caliber
- 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.)
- Active
Links
Images
Landscapes
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses an elasticity balanced type has electronic expansion valve of heavy-calibre break-make function. The valve comprises a valve body, wherein a valve rod is arranged in the valve body and is driven by a driving device to move up and down, a valve core component is further arranged in the valve body, a first valve port is arranged between the valve rod and the valve core component, a second valve port is arranged between the valve core component and the valve body, and a first elastic piece is arranged on the lower end face of the valve core component. The electronic expansion valve is designed with two valve ports, wherein one valve port with small flow is used for the refrigeration working condition of the air conditioning system, and the other valve port with large flow is used for directly introducing the refrigerant into the evaporator without throttling when the system is in the heating working condition, so that the parallel pipelines and the switch valves of the air conditioning system are reduced, the cost of the air conditioning system is reduced, and the leakage at the joint of the pipelines is reduced.
Description
Technical Field
The utility model relates to an elasticity balanced type has electronic expansion valve of heavy-calibre break-make function belongs to vehicle air conditioning system technical field.
Background
An electronic expansion valve is a throttling element that can be programmed to control the flow of refrigerant into a refrigeration unit. In some occasions (such as a new energy automobile heat pump system) with severe load change or wide operation condition range, the traditional throttling elements (such as a capillary tube, a thermostatic expansion valve and the like) can not meet the requirements of comfort and energy conservation, the electronic expansion valve is combined with the variable capacity technology of a compressor to be more and more widely applied, the electronic expansion valve is adopted to adjust the heat degree of a refrigerant at the outlet of an evaporator, a temperature sensor and a pressure sensor (sometimes, the temperature sensor arranged in the middle of the evaporator is also used for collecting the evaporation temperature) arranged at the outlet of the evaporator are used for collecting a superheat degree signal, and the opening degree of the expansion valve is controlled by feedback adjustment; and feedforward and feedback composite regulation can be adopted, superheat degree control lag caused by heat capacity of the evaporator pipe wall and the sensor is eliminated, system regulation quality is improved, and superheat degree is controlled within a target range in a wide evaporation temperature area. Besides the control of the superheat degree of the refrigerant at the outlet of the evaporator, the control function of the electronic expansion valve can be expanded through a specified adjusting program, and the electronic expansion valve is used for defrosting of a heat pump unit, controlling the exhaust temperature of a compressor, cooling a battery of an electric automobile and the like.
The existing electronic expansion valves for automobile air conditioning systems generally include:
(1) direct-acting type: the expansion valve is a needle valve directly driven by a pulse stepping motor. When the pulse voltage of the control circuit is applied to each phase coil of the motor stator according to a certain logic relationship, the motor rotor made of permanent magnets generates rotary motion under the action of magnetic torque, and the needle valve is lifted or lowered through the transmission of threads to adjust the flow of the valve (see figure 2).
(2) The speed reduction type: the expansion valve is internally provided with a reduction gear set. The stepping motor transmits the magnetic torque to the needle valve through the reduction gear. The reduction gear set amplifies the effect of the magnetic torque.
However, both the direct-acting type and the deceleration type electronic expansion valves have only one control valve port with small flow rate, and can only realize the function of single refrigeration.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides an elasticity balanced type has electronic expansion valve of heavy-calibre break-make function, can realize the function of two kinds of operating modes of system's refrigeration and heating.
The utility model discloses a realize through following technical scheme:
an elastic balance type electronic expansion valve with a large-caliber on-off function comprises a valve body, wherein a valve rod is arranged in the valve body and is driven by a driving device to move up and down, a valve core component is further arranged in the valve body, a first valve port is arranged between the valve rod and the valve core component, a second valve port is arranged between the valve core component and the valve body, and a first elastic piece is arranged on the lower end face of the valve core component.
The elastic balance type electronic expansion valve with the large-caliber on-off function is characterized in that the driving device is a stepping motor, and a Hall sensing chip for controlling the angular displacement of a rotor is contained in the stepping motor.
The elastic balance type electronic expansion valve with the large-caliber on-off function is characterized in that the valve core component comprises a sealing element, the sealing element and the valve body form the second valve port, and the drift diameter of the second valve port is consistent with that of the inlet pipeline.
The elastic balance type electronic expansion valve with the large-caliber on-off function is characterized in that a second elastic piece is arranged on the upper end face of the valve core component.
The elastic balance type electronic expansion valve with the large-caliber on-off function is characterized in that the first elastic part and the second elastic part are both springs.
The elastic force balanced type electronic expansion valve with the large-caliber on-off function is characterized in that the lower end of the first spring is supported by a spring seat, and the spring seat is in threaded connection with the valve body.
The utility model discloses the beneficial effect who reaches:
(1) the electronic expansion valve is designed with two valve ports, wherein one valve port with small flow is used for the refrigeration working condition of the air conditioning system, and the other valve port with large flow is used for directly introducing the refrigerant into the evaporator without throttling when the system is in the heating working condition, so that the parallel pipelines and the switch valves of the air conditioning system are reduced, the cost of the air conditioning system is reduced, and the leakage at the joint of the pipelines is reduced.
(2) The control system can realize the operation of two working conditions only by directly controlling the pulse signal for driving the motor of the electronic expansion valve according to different refrigeration and heating conditions, does not need other control signals and an electrified circuit, and is simple and reliable in system control.
(3) The large-flow valve port is opened through the balance of the pressure difference of the inlet and the outlet and the elastic force, the structure is simpler, and the load of the stepping motor cannot be increased when the large valve port is opened.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of a conventional direct-acting electronic expansion valve.
In the figure: 1. the valve comprises a driving device, 2, a valve rod, 3, a second spring, 4, a valve core component, 5, a first spring, 6, a valve body, 7 and a spring seat.
Detailed Description
The technical scheme of the utility model is further explained in the following with the attached drawings. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial" and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction to be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral part; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in the figure, the utility model discloses an elasticity balanced type has electronic expansion valve of heavy-calibre break-make function, its structure includes: the valve consists of a stepping motor part 1, a valve rod 2, a second spring 3, a valve core part 4, a first spring 5, a valve body 6, a spring seat 7 and other parts; the step motor component 1 comprises a Hall sensing chip for controlling the angular displacement of a rotor and a valve rod 2 connected with the rotor of the step motor, a second spring 3 is arranged on the lower end surface of the step motor and supported on a valve core component 4, a first valve port A with small flow is arranged between the valve rod 2 and the valve core component 4, and the drift diameter of the first valve port A meets the drift diameter requirement of a related expansion valve; the valve core component 4 also comprises a sealing element which forms a second valve port B with large flow with the valve body 6, and the through diameter of the second valve port B is close to the diameter of the inlet pipeline; a first spring 5 and a spring seat 7 are arranged on the lower end surface of the valve core 4;
when the air conditioning system does not work, the valve rod 2 of the electronic expansion valve is positioned at the lower limit of the stroke of the motor 1, the valve rod 2 is contacted with the upper end of the valve core valve port A, and the valve ports A and B are completely closed.
When the air conditioning system needs to perform normal refrigeration work, the motor 1 of the electronic expansion valve drives the valve rod 2 to move upwards, at the moment, because pressure difference exists between the upper end surface and the lower end surface of the valve core assembly, the valve rod 2 cannot drive the valve core assembly 4 to move upwards when moving upwards, the valve rod 2 gradually opens the first valve port A, the second valve port B is in a closed state, the electronic expansion valve is in a small-flow throttling working state, and the stepping motor 1 drives the valve rod 2 to move upwards and downwards within a certain range to control the opening area of the first valve port A so as to control the flow of refrigerant entering the evaporator;
when the air conditioning system is converted into a heating state, the electronic expansion valve drives the valve rod 2 to move upwards in a large stroke through the rotation of the motor 1, at the moment, the lower end of the valve rod 2 is separated from the first valve port A of the valve core 4, the flow of the first valve port A is increased, so that the pressure difference between the upper end surface of the valve core and the lower end surface of the valve core is rapidly reduced, at the moment, the balance force of the first spring 5 and the second spring 3 is broken, the valve core assembly 4 is pushed up by the elastic force of the first spring 5, at the moment, the second valve port B with large flow is opened, the electronic expansion valve is in a straight-through state, and refrigerant directly enters the evaporator without throttling.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (6)
1. An elastic balance type electronic expansion valve with a large-caliber on-off function comprises a valve body, wherein a valve rod is arranged in the valve body and is driven to move up and down by a driving device.
2. The elastic balanced electronic expansion valve with large-caliber on-off function as claimed in claim 1, wherein the driving device is a stepping motor, and the stepping motor contains a hall sensor chip for controlling the angular displacement of the rotor.
3. The elastic balanced electronic expansion valve with large-caliber on-off function as claimed in claim 2, wherein the valve core component comprises a sealing element, the sealing element and the valve body form the second valve port, and the drift diameter of the second valve port is consistent with that of the inlet pipeline.
4. The elastic balance type electronic expansion valve with the large-caliber on-off function as claimed in claim 2, wherein the upper end surface of the valve core component is provided with a second elastic member.
5. The elastic balanced electronic expansion valve with large-caliber on-off function as claimed in claim 4, wherein the first elastic member and the second elastic member are both springs.
6. The elastic balance type electronic expansion valve with large-caliber on-off function as claimed in claim 2, wherein the lower end of the first elastic member is supported by a spring seat, and the spring seat is in threaded connection with the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120643312.XU CN214699222U (en) | 2021-03-30 | 2021-03-30 | Elastic balance type electronic expansion valve with large-caliber on-off function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120643312.XU CN214699222U (en) | 2021-03-30 | 2021-03-30 | Elastic balance type electronic expansion valve with large-caliber on-off function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214699222U true CN214699222U (en) | 2021-11-12 |
Family
ID=78527930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120643312.XU Active CN214699222U (en) | 2021-03-30 | 2021-03-30 | Elastic balance type electronic expansion valve with large-caliber on-off function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214699222U (en) |
-
2021
- 2021-03-30 CN CN202120643312.XU patent/CN214699222U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5022120B2 (en) | Motorized valves for air conditioning systems | |
| JP5390181B2 (en) | Expansion valve, heat pump refrigeration cycle and air conditioner | |
| US8763419B2 (en) | Motor-operated valve and refrigeration cycle using the same | |
| EP2700853B1 (en) | Control valve | |
| JPS59170653A (en) | Air conditioner | |
| KR20130103741A (en) | Stepping motor driven control valve | |
| CN100552328C (en) | The R410A refrigeration system self-adapting adjustment type expansion valve | |
| CN100529600C (en) | Across critical carbon dioxide automobile air conditioner system mechanical conditioning type expansion valve | |
| CN214699222U (en) | Elastic balance type electronic expansion valve with large-caliber on-off function | |
| CN214578881U (en) | Lifting type electronic expansion valve with large-caliber on-off function | |
| EP2685143A1 (en) | Control valve | |
| CN111998567B (en) | Active control type self-adjusting throttling refrigerator | |
| CN101886832B (en) | control method of heat pump air conditioner | |
| CN100565046C (en) | The expansion valve of embedded with temperature-sensing control element | |
| CN215410208U (en) | Electromagnetic drive's electronic expansion valve | |
| US11313601B2 (en) | System and method for controlling an expansion valve | |
| CN110481270B (en) | Throttle control method and device for air conditioner of electric bus and air conditioning system | |
| CN101988585A (en) | Thermal expansion valve | |
| JP5629856B2 (en) | Control valve | |
| CN202835952U (en) | Electronic expansion valve | |
| CN217977701U (en) | Valve needle assembly of electronic expansion valve | |
| CN106322862B (en) | Flow control valve and heat exchange system | |
| CN212745056U (en) | Electronic expansion valve | |
| CN112303963B (en) | Air conditioner regulating valve, air conditioner and air conditioning system control method | |
| JPS63275865A (en) | Double stage reducing valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |