CN111022653B - Electronic expansion valve, adjusting method and air conditioner - Google Patents
Electronic expansion valve, adjusting method and air conditioner Download PDFInfo
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- CN111022653B CN111022653B CN201911129954.1A CN201911129954A CN111022653B CN 111022653 B CN111022653 B CN 111022653B CN 201911129954 A CN201911129954 A CN 201911129954A CN 111022653 B CN111022653 B CN 111022653B
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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
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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
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention relates to an electronic expansion valve, an adjusting method and an air conditioner. The electronic expansion valve comprises a cavity; a primary adjusting component is arranged on the cavity; a second adjusting component is arranged on the cavity; a secondary adjusting component is arranged on the cavity; the primary adjusting assembly comprises a primary adjusting needle seat; the secondary adjusting component comprises a secondary adjusting needle seat; the secondary adjusting needle seat is arranged inside the primary adjusting needle seat; the secondary regulating needle seat can further enter the first air pipe through the throttling hole, and the air displacement is accurately regulated. The method comprises coarse adjustment and fine adjustment. Therefore, after rough adjustment, under the condition that the fluctuation of the exhaust temperature still does not meet the requirement, the secondary adjusting component can perform fine adjustment again, so that the electronic expansion valve can achieve the purpose of accurately controlling the exhaust temperature.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an electronic expansion valve, an adjusting method and an air conditioner.
Background
The use of air conditioners has become more and more widespread, and one of the important structures for controlling the cooling or heating of the air conditioner is an electronic expansion valve of the air conditioner.
The existing electronic expansion valve can automatically adjust the size of the throttle valve under different conventional working conditions, so that the system pressure can operate in a normal range, and the controlled refrigeration or heating effect is improved. However, the valve core of the conventional electronic expansion valve has a fixed diameter, for example, the diameter is 1.65mm, 1.8mm, 2.0mm, etc. The valve step size is controlled according to the exhaust temperature of a refrigerating system in the adjusting process, the electronic expansion valve can not find a proper valve step sometimes, the adjustment is ceaselessly carried out up and down, and the exhaust temperature can fluctuate ceaselessly between 1 ℃ and 2 ℃.
Disclosure of Invention
In order to solve the above problems, according to a first aspect of the present invention, there is provided an electronic expansion valve, comprising a cavity, a bottom end of the cavity being provided with a throttle hole and a first air pipe which are communicated with the cavity; a second air pipe communicated with the cavity is arranged on one side of the lower part of the side surface of the cavity; a primary adjusting component is arranged on the cavity; a secondary adjusting component is arranged on the cavity; the primary adjusting assembly comprises a primary adjusting needle seat; the secondary adjusting component comprises a secondary adjusting needle seat; the secondary adjusting needle seat is arranged inside the primary adjusting needle seat; the secondary regulating needle seat can further enter the first air pipe through the throttling hole, and the air displacement is accurately regulated.
Further, the primary adjusting assembly comprises a primary adjusting rotor; the secondary regulating assembly comprises a secondary regulating rotor; the second-stage regulating rotor is arranged inside the first-stage regulating rotor.
Furthermore, the secondary regulating rotor penetrates through the primary regulating rotor and is inserted into the primary regulating needle seat to be connected with the secondary regulating needle seat.
Furthermore, the primary adjusting assembly also comprises a primary adjusting coil arranged outside the cavity; the secondary adjusting component comprises a secondary adjusting coil arranged at the top of the cavity; the rotation of the primary adjusting rotor can be adjusted through the primary adjusting coil, and the rotation of the secondary adjusting rotor can be adjusted through the secondary adjusting coil.
Further, a valve seat is arranged on the inner wall of the cavity; the valve seat is matched with the outer wall of the primary adjusting needle seat, so that the primary adjusting needle seat can move in the vertical direction along the valve seat.
Further, the upper inner wall of the first air pipe can be in clearance fit with the secondary adjusting needle seat.
In a second aspect of the present invention, an adjusting method for an electronic expansion valve is provided, where the electronic expansion valve performs coarse adjustment and fine adjustment on an exhaust gas volume, the coarse adjustment is performed by a primary adjusting component, and the fine adjustment is performed by a secondary adjusting component.
Further, the method comprises the following steps:
the air conditioner enters a cooling or heating mode to operate, and an exhaust temperature sensor of the air conditioner detects the exhaust temperature;
coarse adjustment is carried out by using a primary adjusting component; the adjusting mode is that a refrigerant or a heating medium enters the electronic expansion valve through the first air pipe and flows out through the second air pipe, and the adjusting valve step enables the primary adjusting needle seat to move upwards or downwards in the cavity, adjusts the air displacement and changes the exhaust temperature; after the valve step is stable, a pressure refrigeration sensor of the air conditioner judges the current exhaust temperature fluctuation value;
judging the relationship between the temperature fluctuation value and the temperature set value; when the fluctuation value of the exhaust temperature is smaller than the set temperature value, the electronic expansion valve is fixed in the current valve step; when the fluctuation of the exhaust temperature is larger than a temperature set value, the fine adjustment is continuously carried out;
fine adjustment is carried out by using a secondary adjusting component; the adjusting mode is that the adjusting valve step is adjusted, so that the second-stage adjusting needle seat further enters the first air pipe through the throttling hole, the air displacement is adjusted, the air exhaust temperature is changed, and the air exhaust is stable until the fluctuation value of the air exhaust temperature is smaller than the temperature set value.
Further, in the coarse adjustment step, the valve step is adjusted by rotating the primary adjusting coil to rotate and adjusting the rotor; in the fine adjustment step, the valve step is adjusted by rotating the secondary adjusting coil and then rotating the secondary adjusting rotor.
Further, the temperature setting value is 0.1-0.5 ℃.
Further, the temperature setpoint was 0.2 ℃.
A third aspect of the present invention provides an air conditioner having an electronic expansion valve, wherein the electronic expansion valve is the electronic expansion valve described above.
The invention has the advantages that:
(1) the electronic expansion valve is provided with the secondary adjusting component, and exhaust of the electronic expansion valve can be secondarily adjusted on the basis of the primary adjusting component, so that the electronic expansion valve is more accurately adjusted.
(2) According to the electronic expansion valve, the secondary regulating component is arranged in the primary regulating component, so that the secondary regulating component does not influence the regulation of the primary regulating component, and the structure of the conventional electronic expansion valve is not changed.
(3) The adjusting method of the electronic expansion valve has the advantages of simple and convenient adjusting process and remarkable effect accuracy, and improves the performance of the air conditioner.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a flow chart of the conditioning method of the present invention.
Description of reference numerals:
1-secondary regulating needle seat; 2-first-stage adjusting needle seat; 3-first order regulating rotor; 4-a secondary regulating rotor; 5-a secondary regulating coil; 6-primary regulating coil; 7-a cavity; 71-a first trachea; 72-a second trachea; 73-valve seat; 711-orifice.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1-2, an electronic expansion valve according to the present invention includes a chamber 7, a bottom end of the chamber 7 is provided with an orifice 711 and a first air pipe 71 which are communicated with the chamber 7, and a side of a lower portion of a side surface is provided with a second air pipe 72 which is communicated with the chamber 7. A primary adjusting component and a secondary adjusting component are arranged on the cavity 7; the primary adjusting component comprises a primary adjusting needle seat 2; the secondary adjusting component comprises a secondary adjusting needle seat 1; the secondary adjusting needle seat 1 is arranged inside the primary adjusting needle seat 2; the secondary regulating needle seat 1 can further enter the first air pipe 71 through the throttle hole 711, and the air displacement can be accurately regulated. Therefore, after the primary adjusting assembly is adjusted, the secondary adjusting assembly can adjust the exhaust volume again under the condition that the fluctuation of the exhaust temperature still does not meet the requirement, so that the adjustment of the exhaust temperature is realized, and the electronic expansion valve can achieve the aim of accurate control.
Referring to fig. 1, the primary adjustment assembly includes a primary adjustment rotor 3; the secondary regulating assembly comprises a secondary regulating rotor 4; the secondary regulating rotor 4 is arranged inside the primary regulating rotor 3; the primary regulating rotor 3 and the secondary regulating rotor 4 can realize the regulation of valve steps; while the secondary regulating rotor 4 can be regulated on the basis of the primary regulating rotor 3.
Referring to the attached drawing 1, the secondary regulating rotor 4 penetrates through the primary regulating rotor 3 and is inserted into the primary regulating needle seat 2 to be connected with the secondary regulating needle seat 1; so that the secondary adjusting component can be matched with the primary adjusting component for further accurate adjustment.
Referring to fig. 1, the primary adjusting assembly further includes a primary adjusting coil 6 disposed outside the cavity 7; the secondary adjusting component comprises a secondary adjusting coil 5 arranged at the top of the cavity 7; so that the rotation of the primary regulating rotor 3 can be regulated by the primary regulating coil 6 and the rotation of the secondary regulating rotor 4 can be regulated by the secondary regulating coil 5.
Referring to fig. 1, the inner wall of the cavity 7 is provided with a valve seat 73; the valve seat 73 is matched with the outer wall of the primary adjusting needle seat 2, so that the primary adjusting needle seat 2 can move along the valve seat 73 in the vertical direction. The first-stage adjusting needle seat 2 can move up and down and adjust the air displacement in the cavity 7 of the electronic expansion valve.
Referring to fig. 1, the upper inner wall of the first air tube 71 can be in clearance fit with the secondary adjusting needle seat 1; so that the two-stage adjusting needle seat 1 can enter the first air pipe 71, and further adjust the air displacement of the electronic expansion valve.
Referring to fig. 1-2, in another aspect of the present invention, there is provided a method for adjusting an electronic expansion valve as described above, wherein the electronic expansion valve performs coarse adjustment and fine adjustment of an exhaust gas amount, the coarse adjustment is performed by a primary adjustment component, and the fine adjustment is performed by a secondary adjustment component. Therefore, by fine adjustment of the exhaust gas amount, accurate control of the exhaust gas temperature can be achieved.
The method comprises the following steps:
the air conditioner enters a cooling or heating mode to operate, and an exhaust temperature sensor of the air conditioner detects the exhaust temperature.
Using a first-stage adjusting component of the electronic expansion valve to carry out coarse adjustment; the adjusting mode is that the refrigerant or the heating medium enters the electronic expansion valve through the first air pipe 71 and flows out through the second air pipe 72, the valve is adjusted, so that the first-stage adjusting needle seat 2 moves upwards or downwards in the cavity 7, the air displacement is adjusted, and the air exhaust temperature is changed; after the valve step is stable, a pressure refrigeration sensor of the air conditioner judges the current exhaust temperature fluctuation value;
judging the relationship between the temperature fluctuation value and the temperature set value; when the fluctuation value of the exhaust temperature is smaller than the set temperature value, the electronic expansion valve is fixed in the current valve step; and when the fluctuation of the exhaust temperature is larger than the set temperature value, continuing to perform fine adjustment.
Fine adjustment is carried out by using a secondary adjusting component of the electronic expansion valve; the adjusting mode is that the valve is adjusted, so that the second-stage adjusting needle seat 1 further enters the first air pipe 71 through the throttle hole 711, the air displacement is adjusted, the air exhaust temperature is changed, and the air exhaust is stable until the fluctuation value of the air exhaust temperature is smaller than the set temperature value.
In the coarse adjustment step, the valve step is adjusted by rotating the primary adjusting coil 6 to rotate and adjusting the rotor 3; in the fine adjustment step, the valve step is adjusted by rotating the secondary adjustment coil 5 and then rotating the secondary adjustment rotor 4.
The set temperature value is 0.1-0.5 ℃; the fluctuation range of the temperature is less than 1 ℃, so that the fluctuation of the temperature is more stable
Preferably, the temperature setpoint is 0.2 ℃.
In a third aspect of the present invention, an air conditioner is provided, which has an electronic expansion valve, and the electronic expansion valve is the electronic expansion valve described above. Therefore, the exhaust air volume is accurately adjusted through the electronic expansion valve, the exhaust temperature is accurately controlled, and the cooling or heating function of the air conditioner can be further improved in a cooling or heating mode.
Examples
The invention provides the following embodiments, adopt the above-mentioned electronic expansion valve, through the regulating method of the above-mentioned electronic expansion valve, regulate the displacement in the electronic expansion valve, thus realize the control to the temperature of displacement, make the fluctuation of the exhaust temperature more stable; therefore, the refrigerating process of the air conditioner is stable, and the refrigerating function is improved.
Starting the air conditioner, and enabling the air conditioner to enter a refrigeration mode to operate; at this time, the exhaust temperature sensor of the air conditioner starts to detect the exhaust temperature.
The temperature set point for the exhaust gas temperature was set to 0.2 ℃.
Using the first-stage adjusting component of the electronic expansion valve to carry out coarse adjustment; the adjusting mode is that the refrigerant enters the electronic expansion valve through the first air pipe 71 and flows out through the second air pipe 72, and the primary adjusting coil 6 is rotated to rotate and adjust the rotor 3 to adjust the valve steps, so that the primary adjusting needle seat 2 moves upwards or downwards in the cavity 7, the air displacement is adjusted, and the air exhaust temperature is changed; and after the valve step is stable, the pressure refrigeration sensor of the air conditioner judges the current exhaust temperature fluctuation value.
Detecting the fluctuation of the exhaust temperature by an exhaust temperature sensor of the air conditioner, and judging the relationship between the temperature fluctuation value and a temperature set value; when the fluctuation value of the exhaust temperature is less than the set temperature value by 0.2 ℃, the electronic expansion valve is fixed in the current valve step; and when the fluctuation of the exhaust temperature is greater than the set temperature value by 0.2 ℃, continuing to perform fine adjustment.
Fine adjustment is carried out by using a secondary adjusting component; the adjusting mode is that the secondary adjusting coil 5 is rotated to rotate the secondary adjusting rotor 4 to adjust the valve step, so that the secondary adjusting needle seat 1 further enters the first air pipe 71 through the throttling hole 711, the air displacement is adjusted, the air exhaust temperature is changed until the fluctuation value of the air exhaust temperature is less than the temperature set value by 0.2 ℃, and the air exhaust is stable. After the steps of coarse adjustment and fine adjustment of the air displacement, the fluctuation value of the exhaust temperature is less than the temperature set value by 0.2 ℃, so that the exhaust temperature of the electronic expansion valve is constant, the air conditioner can refrigerate at constant temperature,
the embodiment realizes the fine adjustment of the exhaust temperature of the air conditioner in the refrigeration mode, so that the refrigeration function is improved.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. An electronic expansion valve comprises a cavity (7), wherein the bottom end of the cavity (7) is provided with a throttling hole (711) communicated with the cavity (7) and a first air pipe (71); a second air pipe (72) communicated with the cavity (7) is arranged on one side of the lower part of the side surface of the cavity (7); a primary adjusting component is arranged on the cavity (7); the method is characterized in that: a secondary adjusting component is arranged on the cavity (7); the primary adjusting component comprises a primary adjusting needle seat (2); the secondary adjusting component comprises a secondary adjusting needle seat (1); the secondary adjusting needle seat (1) is arranged inside the primary adjusting needle seat (2); the secondary regulating needle seat (1) can extend out of the primary regulating needle seat (2) and further enter the first air pipe (71) through the throttling hole (711), and the air displacement is accurately regulated.
2. An electronic expansion valve according to claim 1, wherein: the primary adjusting component comprises a primary adjusting rotor (3); the secondary regulating assembly comprises a secondary regulating rotor (4); the secondary adjusting rotor (4) is arranged inside the primary adjusting rotor (3).
3. An electronic expansion valve according to claim 2, wherein: the secondary adjusting rotor (4) penetrates through the primary adjusting rotor (3) and is inserted into the primary adjusting needle base (2) to be connected with the secondary adjusting needle base (1).
4. An electronic expansion valve according to claim 3, wherein: the primary adjusting assembly further comprises a primary adjusting coil (6) arranged outside the cavity (7); the secondary adjusting component comprises a secondary adjusting coil (5) arranged at the top of the cavity (7); the rotation of the primary adjusting rotor (3) can be adjusted through the primary adjusting coil (6), and the rotation of the secondary adjusting rotor (4) can be adjusted through the secondary adjusting coil (5).
5. An electronic expansion valve according to claim 1, wherein: a valve seat (73) is arranged on the inner wall of the cavity (7); the valve seat (73) is matched with the outer wall of the primary adjusting needle seat (2), so that the primary adjusting needle seat (2) can move in the vertical direction along the valve seat (73).
6. An electronic expansion valve according to claim 1, wherein: the upper inner wall of the first air pipe (71) can be in clearance fit with the secondary adjusting needle seat (1).
7. An adjusting method of an electronic expansion valve is characterized in that: use of an electronic expansion valve according to any of claims 1-6 for coarse and fine adjustment of the displacement, said coarse adjustment being effected by means of a primary adjustment member and said fine adjustment being effected by means of a secondary adjustment member.
8. A method of adjusting an electronic expansion valve according to claim 7, wherein: the method comprises the following steps:
the air conditioner enters a cooling or heating mode to operate, and an exhaust temperature sensor of the air conditioner detects the exhaust temperature;
coarse adjustment is carried out by using a primary adjusting component; the adjusting mode is that a refrigerant or a heating medium enters the electronic expansion valve through the first air pipe (71) and flows out through the second air pipe (72), the valve is adjusted, so that the primary adjusting needle seat (2) moves upwards or downwards in the cavity (7), the air displacement is adjusted, and the air exhaust temperature is changed; after the valve step is stable, a pressure refrigeration sensor of the air conditioner judges the current exhaust temperature fluctuation value;
judging the relationship between the temperature fluctuation value and the temperature set value; when the fluctuation value of the exhaust temperature is smaller than the set temperature value, the electronic expansion valve is fixed in the current valve step; when the fluctuation of the exhaust temperature is larger than a temperature set value, the fine adjustment is continuously carried out;
fine adjustment is carried out by using a secondary adjusting component; the adjusting mode is that the valve is adjusted, so that the second-stage adjusting needle seat (1) further enters the first air pipe (71) through the throttle hole (711), the air displacement is adjusted, the air exhaust temperature is changed until the fluctuation value of the air exhaust temperature is smaller than the temperature set value, and the air exhaust is stable.
9. A method of adjusting an electronic expansion valve according to claim 8, wherein: in the coarse adjustment step, the valve step is adjusted by rotating the primary adjusting coil (6) and further rotating the primary adjusting rotor (3); in the fine adjustment step, the valve step is adjusted by rotating the secondary adjusting coil (5) and then rotating the secondary adjusting rotor (4).
10. A method of adjusting an electronic expansion valve according to claim 8, wherein: the temperature set point is 0.1-0.5 ℃.
11. A method of adjusting an electronic expansion valve according to claim 10, wherein: the temperature setpoint was 0.2 ℃.
12. An air conditioner having an electronic expansion valve, characterized in that: the electronic expansion valve is the electronic expansion valve according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911129954.1A CN111022653B (en) | 2019-11-18 | 2019-11-18 | Electronic expansion valve, adjusting method and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911129954.1A CN111022653B (en) | 2019-11-18 | 2019-11-18 | Electronic expansion valve, adjusting method and air conditioner |
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| Publication Number | Publication Date |
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| CN111022653A CN111022653A (en) | 2020-04-17 |
| CN111022653B true CN111022653B (en) | 2022-03-22 |
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| CN201911129954.1A Active CN111022653B (en) | 2019-11-18 | 2019-11-18 | Electronic expansion valve, adjusting method and air conditioner |
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| CN201083272Y (en) * | 2007-09-29 | 2008-07-09 | 董映红 | Auxiliary valve inner concealed butterfly valve |
| CN205315733U (en) * | 2016-01-20 | 2016-06-15 | 安徽铜陵科力阀门有限责任公司 | Binary channels butterfly valve |
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| CN208750027U (en) * | 2018-06-28 | 2019-04-16 | 罗斯韦尔流体控制(广州)有限公司 | A kind of electric butterfly valve |
| CN109973671B (en) * | 2019-04-04 | 2024-04-12 | 航空工业(新乡)计测科技有限公司 | Primary and secondary valve core type accurate flow regulating valve |
| CN110005823B (en) * | 2019-04-06 | 2020-03-27 | 胡海明 | Driver for coaxial double-valve-core valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001254861A (en) * | 2000-03-08 | 2001-09-21 | Matsushita Refrig Co Ltd | Three-way valve |
| CN1985118A (en) * | 2004-07-09 | 2007-06-20 | 丹佛斯公司 | Flow control valve for refrigeration system |
| CN103291999A (en) * | 2012-02-28 | 2013-09-11 | 艾默生环境优化技术(苏州)有限公司 | Electronic expansion valve |
| CN110094514A (en) * | 2018-01-31 | 2019-08-06 | 株式会社鹭宫制作所 | Motor-driven valve and refrigerating circulation system |
| CN110107724A (en) * | 2018-02-01 | 2019-08-09 | 株式会社鹭宫制作所 | Motor-driven valve and refrigerating circulation system |
| CN110107695A (en) * | 2018-02-01 | 2019-08-09 | 株式会社鹭宫制作所 | Motor-driven valve and refrigerating circulation system |
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| Publication number | Publication date |
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| CN111022653A (en) | 2020-04-17 |
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