CN105004373A - Digital universal meter for refrigerating - Google Patents
Digital universal meter for refrigerating Download PDFInfo
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- CN105004373A CN105004373A CN201510416807.8A CN201510416807A CN105004373A CN 105004373 A CN105004373 A CN 105004373A CN 201510416807 A CN201510416807 A CN 201510416807A CN 105004373 A CN105004373 A CN 105004373A
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- valve
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- valve pocket
- pressure transducer
- refrigeration
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Abstract
The invention discloses a digital universal meter for refrigerating. The digital universal meter comprises the components of a housing; a controller, a display screen, a keyboard, a first temperature sensor, a second temperature sensor, a first pressure sensor, a second pressure sensor and a power supply, wherein the controller, the display screen, the keyboard, the first temperature sensor, the second temperature sensor, the first pressure sensor, the second pressure sensor and the power supply are arranged in the housing, the controller is connected with the display screen, the keyboard, the first temperature sensor, the second temperature sensor, the first pressure sensor and the second pressure sensor; and a three-way valve, wherein the first port of the three-way valve is communicated with a first valve chamber, the second port is communicated with a second valve chamber, and a third port is communicated with a third valve chamber. A first valve is arranged between the first valve chamber and the second valve chamber. A second valve is arranged between the second valve chamber and a third valve chamber. Control buttons for the first valve and the second valve are exposed from the housing. The first temperature sensor and the first pressure sensor are mounted in the first valve chamber. The second temperature sensor and the second pressure sensor are mounted in the third valve chamber. The digital universal meter for refrigerating has beneficial effects of high automation degree, complete function, convenient use and convenient carrying.
Description
Technical field
The present invention relates to a kind of digital measuring instrument, be mainly used in refrigeration system, the Installation and Debugging of heat pump, Measurement and analysis, fault diagnosis and Performance Evaluation, belong to instrument field.
Background technology
The application of refrigeration system and heat pump is throughout the various aspects of living, and little of domestic refrigerator, air-conditioning, small-sized refrigerator, arrives central air conditioner, large cold storage etc. greatly, and big and small system is countless.Naturally be inevitable problem to the maintenance of these systems, maintenance and assessment etc., but this kind of systematic parameter is numerous, overhauls numerous and diverse, assessment difficulty.Need to measure many kinds of parameters: pipe surface temperature, evaporating pressure, condensing pressure, the degree of superheat, degree of supercooling, vacuum tightness etc. in debugging or maintenance; Multiple work is carried out at scene of also wanting: the filling of cold-producing medium, bubble-tight detection etc.; Traditional debugging and maintenance in, field technician needs to carry a large amount of instrument: thermometer, vacuum meter, tensimeter, thermal technology's chi etc.; Technician needs hand-kept data simultaneously, and inquires about multiple data: the physical parameter etc. of chemical industry handbook, cold-producing medium; Also carry out a large amount of numerical evaluation and graph making possibly.Above-mentioned various reasons, cause refrigeration/heat pump system failure diagnosis time long, maintenance cost is high.
For the problems referred to above, domestic temporary without effective solution.One is two as seen on the market at present shows, and adopts pointer dial, dial plate has with the pressure scale of not commensurate's demarcation, be also furnished with the temperature scale of different cold-producing medium, this scale and pressure scale one_to_one corresponding.This kind of instrument can measure evaporating pressure and the condensing pressure of cold-producing medium simultaneously, can be read corresponding measure saturated evaporating temperature under pressure and saturated condensing temperature by dial plate.Obviously, this kind of accuracy of instrument is low, and reading error is large; The refrigerant temperature scale number that limited dial plate area can hold is few, and approximately can only hold 3 kinds of cold-producing mediums, the applicable surface also namely measured is narrow; The parameter measured only has four, and the measurement of other parameter also needs the instrument coordinating other, such as will measure the degree of superheat and just must coordinate thermometer with degree of supercooling; Purposes is limited, can only with parameter measurement and refrigerant charging, cannot vacuum measurement be carried out, air-leakage test.Can only designation data simply, cannot to data analysis.So two table is a tensimeter in essence, and it cannot replace thermometer, vacuum meter etc., do not reduce the quantity of maintenance personal's carrying implement, also can not reduce the workload that technician's post-processed is analyzed.
Unlike this, in electronic surveying field, digital measuring instrument replaces machinery instrument comprehensively, adopt modern sensor technology in conjunction with the powerful arithmetic capability of microprocessor, rely on the flexible advantage of liquid crystal display, digital instrument is all that mechanical type instrument is incomparable in portability, ease for use, high efficiency, multifunctionality.The digital multimeter measured for electronic circuit is exactly Typical Representative.And refrigerating/heat pump industry at home, the digital instrument of this " multimeter " formula does not almost have, only have the import instrument that testing agency's using function of specialty is more complete, ordinary enterprises rarely has use, and the Measurement and analysis mode of the technician of a domestic line still rests on traditional poor efficiency stage.Therefore, urgently research and develop a refrigeration system multimeter, make its whole multiple single instrument function, refrigeration/heat pump system most parameters can be measured, comprise a large amount of cold-producing medium data, the measurement of the different refrigerant system of multiple employing can be used for.
Summary of the invention
The present invention, according to above deficiency, provides a kind of numeral refrigeration multimeter.This table is integrated and is expanded the function of refrigerating/heat pump field traditional measurement by multiple mechanical type instrument, the measurement of collection refrigeration/heat pump system Common Parameters, air tightness test, vacuum monitor, refrigerant charging, data upload are downloaded, and fault diagnosis and Performance Evaluation function are in one.
Technical scheme of the present invention is:
A kind of numeral refrigeration multimeter, is characterized in that, comprising:
Housing;
Controller, display screen, keyboard, the first temperature sensor, the second temperature sensor, the first pressure transducer, the second pressure transducer and power supply, be arranged in housing, controller connects display screen, keyboard, the first temperature sensor, the second temperature sensor, the first pressure transducer, the second pressure transducer respectively, and power supply is to each module for power supply;
T-valve, be arranged in housing, T-valve has the first port, second port, 3rd port, first valve pocket, second valve pocket, 3rd valve pocket, first port is communicated with the first valve pocket, second port is communicated with the second valve pocket, 3rd port is communicated with the 3rd valve pocket, the first valve is provided with between first valve pocket and the second valve pocket, the second valve is provided with between second valve pocket and the 3rd valve pocket, the manipulation knob of the first valve and the second valve exposes to housing, first temperature sensor, first pressure transducer is arranged on the first valve pocket, second temperature sensor, second pressure transducer is arranged on the 3rd valve pocket.
Controller selects microprocessor as chip, microprocessor is responsible for controlling display control module, data acquisition module, communication module, and complete digital signal filter, feature extraction, numerical evaluation, statistical study, fault diagnosis, the result obtained is delivered to display screen show in real time, send to host computer to do further process by communication module raw data and result simultaneously; Can the user responded from matrix keyboard input, for each user's input provides corresponding service, thus realize man-machine interaction; Can the multiple asynchronous event of process, interruption and exception.
As preferably, described first valve and the second valve closing, measure for cooling parameters, described first port is connected to the low pressure end of refrigeration system, described 3rd port is connected to the high-pressure side of refrigeration system, the first described pressure transducer and the second pressure transducer work.
As preferably, described second valve closing, for airtightness measurement, described second pressure transducer work, the 3rd described port connects the high-pressure side of refrigeration system.
As preferably, the first described valve and the second valve open, for vacuum measurement, described first pressure transducer work, described first port connects the low pressure end of refrigeration system, and described second port connects vacuum pump, and described 3rd port connects the high-pressure side of refrigeration system.
As preferably, the first described valve and the second valve open, measure for coolant injection, the first described pressure transducer and the second pressure transducer work, described first port connects the low pressure end of refrigeration system, described second port connects refrigerant tank, and described 3rd port connects the high-pressure side of refrigeration system.
In order to can duty be observed, also comprise and look liquid window, this look liquid window can observe described in the first valve pocket, the second valve pocket, liquid flow in the 3rd valve pocket.
As preferably, also comprise USB port, the controller described in this USB port connects.
As preferably, also comprise external power supply port, this external power supply port and described power sources in parallel, power supply is rechargeable battery.
The present invention have automaticity high, multiple functional, use easy to carry, that measuring accuracy is high beneficial effect.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the T-valve structural representation of the present invention when measuring for cooling parameters.
Fig. 3 is that the present invention is for T-valve structural representation during airtightness measurement.
Fig. 4 is that the present invention is for T-valve structural representation during vacuum measurement.
Fig. 5 is the T-valve structural representation of the present invention when measuring for coolant injection.
Embodiment
Now the present invention is further illustrated by reference to the accompanying drawings:
As shown in the figure, a kind of numeral refrigeration multimeter, comprising:
Housing 9;
Controller, display screen 8, keyboard 7, first temperature sensor 21, second temperature sensor 52, first pressure transducer 22, second pressure transducer 51 and power supply, be arranged in housing 9, controller connects display screen 8, keyboard 7, first temperature sensor 21, second temperature sensor 52, first pressure transducer 22, second pressure transducer 51 respectively, and power supply is to each module for power supply;
T-valve, be arranged in housing 9, T-valve has the first port 2, second port 4, 3rd port 5, first valve pocket, second valve pocket, 3rd valve pocket, first port 2 is communicated with the first valve pocket, second port 4 is communicated with the second valve pocket, 3rd port 5 is communicated with the 3rd valve pocket, the first valve 41 is provided with between first valve pocket and the second valve pocket, the second valve 42 is provided with between second valve pocket and the 3rd valve pocket, the manipulation knob 1 of the first valve 41 exposes to housing 9, the manipulation knob 6 of the second valve 42 exposes to housing 9, first temperature sensor 21, first pressure transducer 22 is arranged on the first valve pocket, second temperature sensor 52, second pressure transducer 51 is arranged on the 3rd valve pocket.
First valve 41 and the second valve 42 are closed, and measure for cooling parameters, the first port 2 is connected to the low pressure end of refrigeration system, and the 3rd port 5 is connected to the high-pressure side of refrigeration system, and the first pressure transducer 22, second pressure transducer 51 works.
Second valve 42 is closed, and for airtightness measurement, the second pressure transducer 51 works, and the 3rd port 5 connects the high-pressure side of refrigeration system.
First valve 41 and the second valve 42 are opened, and for vacuum measurement, the first pressure transducer 22 works, and the first port 2 connects the low pressure end of refrigeration system, and the second port 4 connects vacuum pump, and the 3rd port 5 connects the high-pressure side of refrigeration system.
First valve 41 and the second valve 42 are opened, measure for coolant injection, the first pressure transducer 22 and the second pressure transducer 51 work, and the first port 2 connects the low pressure end of refrigeration system, second port 4 connects refrigerant tank, and the 3rd port 5 connects the high-pressure side of refrigeration system.
Also comprise and look liquid window 3, this can observe liquid flow in the first valve pocket, the second valve pocket, the 3rd valve pocket depending on liquid window 3.
Also comprise USB port, this USB port connection control device.
Also comprise external power supply port, this external power supply port and power sources in parallel, power supply is rechargeable battery.
Claims (8)
1. a numeral refrigeration multimeter, is characterized in that, comprising:
Housing;
Controller, display screen, keyboard, the first temperature sensor, the second temperature sensor, the first pressure transducer, the second pressure transducer and power supply, be arranged in housing, controller connects display screen, keyboard, the first temperature sensor, the second temperature sensor, the first pressure transducer, the second pressure transducer respectively, and power supply is to each module for power supply;
T-valve, be arranged in housing, T-valve has the first port, second port, 3rd port, first valve pocket, second valve pocket, 3rd valve pocket, first port is communicated with the first valve pocket, second port is communicated with the second valve pocket, 3rd port is communicated with the 3rd valve pocket, the first valve is provided with between first valve pocket and the second valve pocket, the second valve is provided with between second valve pocket and the 3rd valve pocket, the manipulation knob of the first valve and the second valve exposes to housing, first temperature sensor, first pressure transducer is arranged on the first valve pocket, second temperature sensor, second pressure transducer is arranged on the 3rd valve pocket.
2. a kind of numeral refrigeration multimeter as claimed in claim 1, it is characterized in that, described first valve and the second valve closing, measure for cooling parameters, described first port is connected to the low pressure end of refrigeration system, described 3rd port is connected to the high-pressure side of refrigeration system, the first described pressure transducer and the second pressure transducer work.
3. a kind of numeral refrigeration multimeter as claimed in claim 1, is characterized in that, described second valve closing, and for airtightness measurement, described second pressure transducer work, the 3rd described port connects the high-pressure side of refrigeration system.
4. a kind of numeral refrigeration multimeter as claimed in claim 1, it is characterized in that, the first described valve and the second valve open, for vacuum measurement, described first pressure transducer work, described first port connects the low pressure end of refrigeration system, and described second port connects vacuum pump, and described 3rd port connects the high-pressure side of refrigeration system.
5. a kind of numeral refrigeration multimeter as claimed in claim 1, it is characterized in that, the first described valve and the second valve open, measure for coolant injection, the first described pressure transducer and the second pressure transducer work, described first port connects the low pressure end of refrigeration system, and described second port connects refrigerant tank, and described 3rd port connects the high-pressure side of refrigeration system.
6. the one numeral refrigeration multimeter as described in any one of claim 1-5, is characterized in that, also comprise and look liquid window, this look liquid window can observe described in the first valve pocket, the second valve pocket, liquid flow in the 3rd valve pocket.
7. a kind of numeral refrigeration multimeter as claimed in claim 1, is characterized in that, also comprise USB port, the controller described in this USB port connects.
8. a kind of numeral refrigeration multimeter as claimed in claim 1, it is characterized in that, also comprise external power supply port, this external power supply port and described power sources in parallel, power supply is rechargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510416807.8A CN105004373A (en) | 2015-07-15 | 2015-07-15 | Digital universal meter for refrigerating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510416807.8A CN105004373A (en) | 2015-07-15 | 2015-07-15 | Digital universal meter for refrigerating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105004373A true CN105004373A (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510416807.8A Pending CN105004373A (en) | 2015-07-15 | 2015-07-15 | Digital universal meter for refrigerating |
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| CN (1) | CN105004373A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6185944B1 (en) * | 1999-02-05 | 2001-02-13 | Midwest Research Institute | Refrigeration system with a compressor-pump unit and a liquid-injection desuperheating line |
| JP2003322438A (en) * | 2002-05-01 | 2003-11-14 | Sanwa:Kk | Pressure display meter |
| CN201177567Y (en) * | 2008-02-21 | 2009-01-07 | 神旺工业有限公司 | Electronic digital type coolant pressure gauges group |
| CN204085725U (en) * | 2014-07-17 | 2015-01-07 | 台州朗讯机械有限公司 | A kind of Multifunctional coolant measures digital display meter device |
| CN104677546A (en) * | 2013-12-02 | 2015-06-03 | 成都菲斯顿德科技有限公司 | Electronic digital type multifunctional refrigerant pressure meter set |
| CN204788485U (en) * | 2015-07-15 | 2015-11-18 | 杭州日光科技有限公司 | Digit refrigeration universal meter |
-
2015
- 2015-07-15 CN CN201510416807.8A patent/CN105004373A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6185944B1 (en) * | 1999-02-05 | 2001-02-13 | Midwest Research Institute | Refrigeration system with a compressor-pump unit and a liquid-injection desuperheating line |
| JP2003322438A (en) * | 2002-05-01 | 2003-11-14 | Sanwa:Kk | Pressure display meter |
| CN201177567Y (en) * | 2008-02-21 | 2009-01-07 | 神旺工业有限公司 | Electronic digital type coolant pressure gauges group |
| CN104677546A (en) * | 2013-12-02 | 2015-06-03 | 成都菲斯顿德科技有限公司 | Electronic digital type multifunctional refrigerant pressure meter set |
| CN204085725U (en) * | 2014-07-17 | 2015-01-07 | 台州朗讯机械有限公司 | A kind of Multifunctional coolant measures digital display meter device |
| CN204788485U (en) * | 2015-07-15 | 2015-11-18 | 杭州日光科技有限公司 | Digit refrigeration universal meter |
Non-Patent Citations (1)
| Title |
|---|
| 刘建民等: "《汽车电路识读与电器故障排除》", 30 September 2014, 金盾出版社 * |
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Application publication date: 20151028 |