CN115452356A - Expansion valve opening degree control testing device and method for air conditioner - Google Patents
Expansion valve opening degree control testing device and method for air conditioner Download PDFInfo
- Publication number
- CN115452356A CN115452356A CN202211064545.XA CN202211064545A CN115452356A CN 115452356 A CN115452356 A CN 115452356A CN 202211064545 A CN202211064545 A CN 202211064545A CN 115452356 A CN115452356 A CN 115452356A
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- expansion valve
- butt joint
- opening degree
- tank
- pipe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides an expansion valve opening control testing device and method for an air conditioner, relating to the technical field of expansion valve opening testing equipment and comprising the following steps: a base; a control box is fixedly arranged at the front end of the top plane of the base; a supporting frame is vertically arranged on the base at the rear side of the control box; the front end of the support frame is vertically provided with a liquid inlet pipe. According to the invention, intelligent linkage control is realized through the overflow linkage valve, the liquid inlet linkage valve and the controller, so that the constant pressure of fluid flowing to the expansion valve body of the constant-pressure liquid inlet tank is ensured, the opening degree of the expansion valve body is only related to the temperature, and the opening degree value of a corresponding temperature interval is accurately tested, so that calibration is carried out, and the problem that the measurement of the opening degree value is influenced because the opening degree value of the expansion valve is tested in a fluid pumping mode and the pressure of the pumped fluid floats is solved.
Description
Technical Field
The invention relates to the technical field of expansion valve opening degree test equipment, in particular to an expansion valve opening degree control test device and method for an air conditioner.
Background
The current heating and ventilation air-conditioning control system is generally provided with a drive interface of an electronic expansion valve component, but the electronic expansion valve component is an electronic drive stepping motor, the structure of a needle valve is acted by a gear, and the needle valve structure of the electronic expansion valve is closed, so that the difficulty is higher when the control system actually tests the opening degree of the electronic expansion valve.
Especially, when the expansion valve is subjected to factory inspection and calibration, a field test of a machine connecting pipeline is usually carried out, the opening degree value of the expansion valve is tested in a fluid pumping mode, and the problem of pressure floating of the pumped fluid is caused, so that the measurement of the opening degree value is influenced.
Disclosure of Invention
In view of the above, the present invention provides an expansion valve opening control testing apparatus for an air conditioner and a method thereof, which have a quantitative tank and a metering tank in cooperation, so as to ensure that the pressure of a fluid flowing from a constant pressure liquid inlet tank to a valve body of the expansion valve is constant, so that the opening of the valve body of the expansion valve is only related to the temperature, and the apparatus and method are used for accurately testing the opening value of a corresponding temperature interval.
The invention provides an expansion valve opening degree control testing device and method for an air conditioner, which specifically comprise the following steps: a base; a control box is fixedly arranged at the front end of the top plane of the base; a supporting frame is vertically arranged on the base at the rear side of the control box; a liquid inlet pipe is vertically arranged at the front end of the support frame; the upper end of the liquid inlet pipe is fixedly connected with the lower end of the constant-pressure liquid inlet tank in a butt joint mode; a clamping frame is vertically arranged on the side wall of the right end of the supporting frame; the upper end of the supporting frame is fixedly provided with a heating frame; a measuring tank is vertically arranged on the base on the left side of the supporting frame; the right side of the metering tank is connected with a metering tank; the lower end of the quantitative tank is connected with a discharge butt joint pipe; an expansion valve body is inserted between the discharge butt joint pipe and the liquid inlet pipe.
Optionally, a controller and a timer are arranged in the control box, and the controller is electrically connected with the timer.
Optionally, two guide rods are arranged on the clamping frame in parallel front and back; the horizontal perpendicular spiro union in right-hand member middle part of clamping frame has adjusting screw, the feed liquor pipe is U column structure, and the rear end of feed liquor pipe is equipped with butt joint A, and both ends correspond slidable mounting respectively on the guide bar that corresponds one side around butt joint A, and butt joint A's left half is blind platform structure, and the inlet end of expansion valve body is inserted in butt joint A, the right-hand member of heating frame is equipped with the heating jacket, and the draw-in groove that suits with the thermal bulb of expansion valve body is seted up at the middle part of heating jacket, and the interval evenly is equipped with the damping post on the kerve of draw-in groove.
Optionally, an overflow pipe is vertically connected to the middle upper part of the constant-pressure liquid inlet tank; a liquid level meter A is arranged at the position, corresponding to the height of the overflow pipe, in the constant-pressure liquid inlet tank; a overflow linkage valve is arranged in the overflow pipe; the upper end of the constant-pressure liquid inlet tank is provided with an external boss; the middle part of the external boss is vertically connected with a liquid supplementing pipe; a liquid inlet linkage valve is installed on the liquid supplementing pipe, the upper end of the quantifying tank is closed, an electronic flowmeter and a control valve are arranged on a pipeline which extends above the quantifying tank, and a liquid level meter B is arranged at the upper end of the quantifying tank; the lower extreme of metering tank is equipped with the blow-down pipe, the lower extreme of discharging butt joint pipe is equipped with butt joint B, and the upper ledge of butt joint B is blind platform structure, and the play liquid end of expansion valve body is inserted in butt joint B.
Alternatively, first, installation of the expansion valve body:
1. rotating the adjusting screw rod to move the butt joint A outwards, and inserting the liquid inlet end of the expansion valve body into the butt joint A;
2. rotating the adjusting screw rod to enable the butt joint A to move inwards and drive the expansion valve body to move inwards, and inserting the liquid outlet end of the expansion valve body into the butt joint B;
3. completing butt joint installation;
next, a test was performed:
1. firstly, closing a valve at the position of an electronic flowmeter, and opening a liquid inlet linkage valve and a liquid overflow linkage valve;
2. the overflow pipe is externally connected with an external liquid buffer tank, and the liquid supplementing pipe is externally connected with an external liquid supplementing pump, so that liquid is filled in the constant-pressure liquid inlet tank and the quantifying tank;
3. starting a heating sleeve and setting the stepped temperature;
4. starting a test after a control valve at the electronic flowmeter is opened;
5. the measured flow, the measured volume and the measured time are compared with the opening degree of the expansion valve at the current temperature for marking, and a plurality of groups of records are taken;
6. and (6) completing the test.
Advantageous effects
1. According to the invention, intelligent linkage control is realized through the overflow linkage valve, the liquid inlet linkage valve and the controller, when the temperature is higher than the liquid level, the opening degree of the overflow linkage valve is increased, the opening degree of the liquid inlet linkage valve is reduced, and the liquid level is kept constant, so that the constant pressure of fluid flowing to the expansion valve body of the constant-pressure liquid inlet tank is ensured, the opening degree of the expansion valve body is only related to the temperature, and the constant-pressure liquid inlet linkage valve is used for accurately testing the opening degree value of a corresponding temperature interval, thereby calibrating.
2. According to the invention, the middle part of the right end of the clamping frame is transversely and vertically screwed with the adjusting screw, the front and rear positions of the butt joint A part on the guide rod can be adjusted by rotating the adjusting screw, so that the liquid inlet end of the expansion valve body can be conveniently loaded and sealed, the operation is rapid and convenient, the butt joint A can move left and right on the guide rod, and thus a vertical angle installation mode is formed between the butt joint A and the butt joint B, and the sealing installation is convenient.
3. The overflow pipe is vertically connected to the upper part of the middle part of the constant-pressure liquid inlet tank, and is used for keeping the liquid level in the constant-pressure liquid inlet tank constant, ensuring the constant pressure of liquid flowing from the constant-pressure liquid inlet tank to the quantitative tank, reducing external influence factors and avoiding the problem of unstable liquid flow caused by direct pushing of the pump.
4. The upper end of the quantitative tank is closed, the pipeline extending above the metering tank is arranged at the upper end of the quantitative tank, and is provided with the electronic flowmeter and the control valve, the quantitative tank can keep the pipelines at two ends of the valve body of the expansion valve full of liquid, and the problem of data misalignment caused by the fact that the liquid in the pipeline cannot be completely discharged during measurement is solved.
5. According to the invention, the upper end of the metering tank is provided with the liquid level meter B, when the liquid level meter B is triggered, the timer is stopped, and the opening value of the expansion valve is obtained through the volume and the flowing time of the liquid filled to the liquid level meter B and the flow and the pipe diameter of the electronic flow meter, so that the data is more accurate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
The drawings in the following description relate to some embodiments of the invention only and are not intended to limit the invention.
In the drawings:
FIG. 1 shows a front right upper axial view schematic according to an embodiment of the invention;
FIG. 2 shows a schematic top-rear-left axial view of an embodiment in accordance with the invention;
FIG. 3 shows a rear right upper axial view schematic according to an embodiment of the invention;
FIG. 4 shows an enlarged partial structural view of portion A of FIG. 3 according to an embodiment of the invention;
FIG. 5 is an axial view of an expansion valve body in an extended state according to an embodiment of the present invention;
FIG. 6 illustrates a front view architectural diagram according to an embodiment of the present invention;
fig. 7 shows a schematic view of a part of an axial structure of a clamping frame and a liquid inlet pipe according to an embodiment of the invention;
fig. 8 shows a block diagram of a system architecture according to an embodiment of the invention.
List of reference numerals
1. A base; 2. a control box; 201. a controller; 202. a timer; 3. a support frame; 4. a clamping frame; 401. a guide rod; 402. adjusting the screw rod; 5. a liquid inlet pipe; 501. a butt joint A; 6. a heating rack; 601. heating a jacket; 602. a damping column; 7. an expansion valve body; 8. a constant pressure liquid inlet tank; 801. an overflow pipe; 802. a liquid level meter A; 803. a boss is externally connected; 804. a liquid supplementing pipe; 805. a liquid inlet linkage valve; 806. a spill linkage valve; 9. a dosing tank; 901. an electronic flow meter; 10. a metering tank; 1001. a liquid level meter B; 1002. an emptying pipe; 11. discharging the butt joint pipe; 1101. and a butt joint B.
Detailed Description
In order to make the objects, aspects and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like reference symbols in the various drawings indicate like elements.
Example (b): please refer to fig. 1 to 8:
the invention provides an expansion valve opening degree control testing device and method for an air conditioner, wherein the method comprises the following steps: a base 1; the front end of the top plane of the base 1 is fixedly provided with a control box 2; a supporting frame 3 is vertically arranged on the base 1 at the rear side of the control box 2; the front end of the supporting frame 3 is vertically provided with a liquid inlet pipe 5; the upper end of the liquid inlet pipe 5 is fixedly butted with the lower end of the constant-pressure liquid inlet tank 8; a clamping frame 4 is vertically arranged on the side wall of the right end of the supporting frame 3; the upper end of the supporting frame 3 is fixedly provided with a heating frame 6; a measuring tank 10 is vertically arranged on the base 1 at the left side of the supporting frame 3; the right side of the metering tank 10 is connected with a metering tank 9; the lower end of the quantitative tank 9 is connected with a discharge butt joint pipe 11; an expansion valve body 7 is inserted between the discharge butt joint pipe 11 and the liquid inlet pipe 5.
In addition, according to the embodiment of the present invention, as shown in fig. 1 and 8, a controller 201 and a timer 202 are built in the control box 2, and the controller 201 is electrically connected to the timer 202, and the time obtained by the timer 202 can be compared with the flow rate for recording.
Further, according to the embodiment of the present invention, as shown in fig. 1 and 7, two guide rods 401 are installed in parallel to each other in front and rear of the clamping frame 4; the middle part of the right end of the clamping frame 4 is transversely and vertically screwed with an adjusting screw 402, and the front and back positions of the part A501 of the butt joint can be adjusted by rotating the adjusting screw 402 so as to conveniently realize the loading and sealing of the liquid inlet end of the expansion valve body 7, so that the operation is fast and convenient.
In addition, according to the embodiment of the present invention, as shown in fig. 1, the liquid inlet pipe 5 is a U-shaped structure, the rear end of the liquid inlet pipe 5 is provided with a butt joint a501, the front end and the rear end of the butt joint a501 are respectively and correspondingly slidably mounted on the guide rod 401 on the corresponding side, the left half of the butt joint a501 is a blind platform structure, the liquid inlet end of the expansion valve body 7 is inserted into the butt joint a501, and the butt joint a501 can move left and right on the guide rod 401, so as to form a vertical angle with the butt joint B1101, thereby facilitating the sealing installation.
In addition, according to the embodiment of the present invention, as shown in fig. 3 and 4, the right end of the heating frame 6 is provided with the heating jacket 601, the middle of the heating jacket 601 is provided with a clamping groove adapted to the thermal bulb of the expansion valve body 7, the bottom grooves of the clamping groove are uniformly provided with the damping columns 602 at intervals, the thermal bulb of the expansion valve body 7 is placed in the clamping groove for heating, and the damping columns 602 are used for fixing and preventing falling off.
In addition, according to the embodiment of the present invention, as shown in fig. 1, an overflow pipe 801 is vertically connected to the middle upper portion of the constant-pressure liquid inlet tank 8, so as to keep the liquid level in the constant-pressure liquid inlet tank 8 constant, ensure the constant pressure of the liquid flowing from the constant-pressure liquid inlet tank 8 to the fixed amount tank 9, reduce the external influence factor, and avoid the problem of unstable liquid flow due to the straight pushing of the pump;
a liquid level meter A802 is arranged at the position, corresponding to the height of the overflow pipe 801, in the constant-pressure liquid inlet tank 8 and is used for being matched with the overflow pipe 801 to keep the liquid level in the constant-pressure liquid inlet tank 8 constant;
a overflow linkage valve 806 is arranged in the overflow pipe 801; the upper end of the constant-pressure liquid inlet tank 8 is provided with an external boss 803; the middle part of the external boss 803 is vertically connected with a liquid supplementing pipe 804; the liquid feeding pipe 804 is provided with the liquid feeding linkage valve 805, intelligent linkage control is achieved through the overflow linkage valve 806, the liquid feeding linkage valve 805 and the controller 201, when the liquid level is higher than the liquid level, the opening degree of the overflow linkage valve 806 is increased, the opening degree of the liquid feeding linkage valve 805 is reduced, the liquid level is kept constant, and therefore the pressure of fluid flowing to the expansion valve body 7 of the constant-pressure liquid feeding tank 8 is guaranteed to be constant, the opening degree of the expansion valve body 7 is only related to the temperature, the opening degree value of the corresponding temperature range is accurately tested, and accordingly calibration is conducted.
In addition, according to the embodiment of the present invention, as shown in fig. 2, the upper end of the metering tank 9 is closed, the pipe extending above the metering tank 10 is provided with the electronic flow meter 901 and the control valve at the upper end of the metering tank 9, the metering tank 9 can keep the pipes at both ends of the expansion valve body 7 full of liquid, and the problem of data misalignment caused by the fact that the liquid in the pipe cannot be completely discharged during measurement is avoided.
In addition, according to the embodiment of the present invention, as shown in fig. 2 and 8, the upper end of the metering tank 10 is provided with the liquid level meter B1001, when the liquid level meter B1001 is triggered, the timer 202 is stopped, and the opening degree value of the expansion valve is obtained by the liquid volume and the flowing time filled to the liquid level meter B1001 and the flow rate and the pipe diameter of the electronic flow meter 901 through feedback, so that the data is more accurate; the lower end of the metering tank 10 is provided with a vent pipe 1002.
In addition, according to the embodiment of the present invention, the lower end of the discharge butt joint pipe 11 is provided with a butt joint B1101, the upper side of the butt joint B1101 has a blind platform structure, and the liquid outlet end of the expansion valve body 7 is inserted into the butt joint B1101.
The specific use mode and function of the embodiment are as follows:
first, the expansion valve body 7 is mounted: the adjusting screw 402 is rotated to move the butt joint A501 outwards, the liquid inlet end of the expansion valve body 7 is inserted into the butt joint A501, and then the adjusting screw 402 is rotated to move the butt joint A501 inwards to drive the expansion valve body 7 to move inwards, and the liquid outlet end of the expansion valve body 7 is inserted into the butt joint B1101, so that the expansion valve body 7 can be rapidly installed and tested, and is convenient and rapid to complete butt joint installation;
starting to test, firstly closing the valve at the electronic flowmeter 901, and opening the liquid inlet linkage valve 805 and the overflow linkage valve 806; an overflow pipe 801 is externally connected with an external liquid buffer tank, a liquid supplementing pipe 804 is externally connected with an external liquid supplementing pump, so that liquid is filled in a constant-pressure liquid inlet tank 8 and a quantitative tank 9, when the liquid level is higher than the liquid level, the opening degree of an overflow linkage valve 806 is increased, the opening degree of a liquid inlet linkage valve 805 is reduced, the liquid level is kept constant, the pressure of fluid flowing to the expansion valve body 7 of the constant-pressure liquid inlet tank 8 is ensured to be constant, the opening degree of the expansion valve body 7 is only related to the temperature, a heating sleeve 601 is opened, a heat preservation bag of the expansion valve body 7 is placed in a clamping groove for heating, a damping column 602 is used for fixing to prevent falling off, the stepped temperature is set, and a control valve at the electronic flowmeter 901 is started to test after being opened; and (4) comparing and marking the opening degree of the expansion valve with the current temperature through the measured flow and volume and time, and taking a plurality of groups of records to finish the test.
Finally, it should be noted that, when describing the positions of the components and the matching relationship therebetween, the present invention is usually illustrated by one/a pair of components, however, it should be understood by those skilled in the art that such positions, matching relationship, etc. are also applicable to other/other pairs of components.
The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.
Claims (10)
1. An expansion valve opening degree control test device for an air conditioner, characterized by comprising: a base (1); a control box (2) is fixedly arranged at the front end of the top plane of the base (1); a supporting frame (3) is vertically arranged on the base (1) at the rear side of the control box (2); a liquid inlet pipe (5) is vertically arranged at the front end of the support frame (3); the upper end of the liquid inlet pipe (5) is fixedly butted with the lower end of the constant-pressure liquid inlet tank (8); a clamping frame (4) is vertically arranged on the side wall of the right end of the supporting frame (3); the upper end of the support frame (3) is fixedly provided with a heating frame (6); a measuring tank (10) is vertically arranged on the base (1) on the left side of the supporting frame (3); the right side of the metering tank (10) is connected with a quantifying tank (9); the lower end of the quantitative tank (9) is connected with a discharge butt joint pipe (11); an expansion valve body (7) is inserted between the discharge butt joint pipe (11) and the liquid inlet pipe (5).
2. The expansion valve opening degree control test device for an air conditioner according to claim 1, wherein: the control box (2) is internally provided with a controller (201) and a timer (202), and the controller (201) is electrically connected with the timer (202).
3. The expansion valve opening degree control test device for an air conditioner according to claim 1, wherein: two guide rods (401) are arranged on the clamping frame (4) in parallel front and back; and the middle part of the right end of the clamping frame (4) is transversely and vertically screwed with an adjusting screw rod (402).
4. The expansion valve opening degree control test device for an air conditioner according to claim 1, wherein: feed liquor pipe (5) are U column structure, and the rear end of feed liquor pipe (5) is equipped with butt joint A (501), and corresponding slidable mounting respectively corresponds on guide bar (401) of corresponding one side in both ends around butt joint A (501), and the left half of butt joint A (501) is blind platform structure, and the inlet port of expansion valve body (7) is inserted in butt joint A (501).
5. The expansion valve opening degree control test device for an air conditioner according to claim 1, wherein: the right end of the heating frame (6) is provided with a heating sleeve (601), the middle of the heating sleeve (601) is provided with a clamping groove matched with a temperature sensing bulb of the expansion valve body (7), and damping columns (602) are uniformly arranged on the bottom groove of the clamping groove at intervals.
6. The expansion valve opening degree control test device for an air conditioner according to claim 1, wherein: an overflow pipe (801) is vertically connected to the middle upper part of the constant-pressure liquid inlet tank (8); a liquid level meter A (802) is arranged at the position, corresponding to the height of the overflow pipe (801), in the constant-pressure liquid inlet tank (8); a overflowing liquid linkage valve (806) is arranged in the overflow pipe (801); the upper end of the constant-pressure liquid inlet tank (8) is provided with an external boss (803); the middle part of the external boss (803) is vertically connected with a liquid supplementing pipe (804); and a liquid inlet linkage valve (805) is arranged on the liquid supplementing pipe (804).
7. The expansion valve opening degree control test device for an air conditioner according to claim 1, wherein: the upper end of the quantitative tank (9) is closed, and the upper end of the quantitative tank (9) is provided with a pipeline extending to the upper part of the metering tank (10) and provided with an electronic flowmeter (901) and a control valve.
8. The expansion valve opening degree control test device for an air conditioner according to claim 1, wherein: a liquid level meter B (1001) is arranged at the upper end of the metering tank (10); and a vent pipe (1002) is arranged at the lower end of the metering tank (10).
9. The expansion valve opening degree control test device for an air conditioner according to claim 1, wherein: the lower end of the discharge butt joint pipe (11) is provided with a butt joint B (1101), the upper half edge of the butt joint B (1101) is of a blind platform structure, and the liquid outlet end of the expansion valve body (7) is inserted into the butt joint B (1101).
10. The method for an expansion valve opening degree control test device for an air conditioner according to any one of claims 1 to 9, wherein:
firstly, installation of an expansion valve body (7):
1. rotating the adjusting screw rod (402) to move the butt joint A (501) outwards, and inserting the liquid inlet end of the expansion valve body (7) into the butt joint A (501);
2. rotating the adjusting screw (402) to enable the butt joint A (501) to move inwards to drive the expansion valve body (7) to move inwards, and inserting the liquid outlet end of the expansion valve body (7) into the butt joint B (1101);
3. completing butt joint installation;
secondly, a test was performed:
1. firstly, closing a valve at an electronic flowmeter (901), and opening a liquid inlet linkage valve (805) and a liquid overflow linkage valve (806);
2. the overflow pipe (801) is externally connected with an external liquid buffer tank, and the liquid supplementing pipe (804) is externally connected with an external liquid supplementing pump, so that liquid is filled in the constant-pressure liquid inlet tank (8) and the quantitative tank (9);
3. starting a heating sleeve (601) and setting a step temperature;
4. starting the test after the control valve at the electronic flow meter (901) is opened;
5. the measured flow, the measured volume and the measured time are compared with the opening degree of the expansion valve at the current temperature for marking, and a plurality of groups of records are taken;
6. and (6) completing the test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211064545.XA CN115452356A (en) | 2022-09-01 | 2022-09-01 | Expansion valve opening degree control testing device and method for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211064545.XA CN115452356A (en) | 2022-09-01 | 2022-09-01 | Expansion valve opening degree control testing device and method for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115452356A true CN115452356A (en) | 2022-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211064545.XA Withdrawn CN115452356A (en) | 2022-09-01 | 2022-09-01 | Expansion valve opening degree control testing device and method for air conditioner |
Country Status (1)
| Country | Link |
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| CN (1) | CN115452356A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116929749A (en) * | 2023-09-01 | 2023-10-24 | 理文科技(山东)股份有限公司 | Detection device for electronic expansion valve |
-
2022
- 2022-09-01 CN CN202211064545.XA patent/CN115452356A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116929749A (en) * | 2023-09-01 | 2023-10-24 | 理文科技(山东)股份有限公司 | Detection device for electronic expansion valve |
| CN116929749B (en) * | 2023-09-01 | 2023-11-21 | 理文科技(山东)股份有限公司 | Detection device for electronic expansion valve |
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Application publication date: 20221209 |