CN1782577A - Device and method for prompting cold medium shortage of air conditioner - Google Patents

Device and method for prompting cold medium shortage of air conditioner Download PDF

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Publication number
CN1782577A
CN1782577A CN 200410093672 CN200410093672A CN1782577A CN 1782577 A CN1782577 A CN 1782577A CN 200410093672 CN200410093672 CN 200410093672 CN 200410093672 A CN200410093672 A CN 200410093672A CN 1782577 A CN1782577 A CN 1782577A
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CN
China
Prior art keywords
temperature
pipe arrangement
cold medium
outdoor
indoor
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.)
Pending
Application number
CN 200410093672
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Chinese (zh)
Inventor
崔永燮
柳润镐
金哲民
宋灿豪
李元熙
赵殷晙
崔昶民
车宇镐
张志永
玄升烨
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LG Electronics Tianjin Appliances Co Ltd
Original Assignee
LG Electronics Tianjin Appliances Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LG Electronics Tianjin Appliances Co Ltd filed Critical LG Electronics Tianjin Appliances Co Ltd
Priority to CN 200410093672 priority Critical patent/CN1782577A/en
Publication of CN1782577A publication Critical patent/CN1782577A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to device and method for prompting refrigerant shortage in air conditioner. The prompt device includes an outdoor temperature sensor; an outdoor unit pipe fitting temperature sensor; a control part for judging refrigerant shortage based on the outdoor temperature, outdoor unit pipe fitting temperature and indoor unit pipe fitting temperature and outputting the judgment result signal; and a prompt unit to show refrigerant shortage according to the output signal. The method includes the following steps: 1. detecting the outdoor temperature, the outdoor unit pipe fitting temperature and the indoor unit pipe fitting temperature; 2. calculating the temperature differences; 3. comparing the calculated temperature differences and the set temperature differences; and 4. judging the refrigerant shortage based on the calculated temperature difference greater than the set temperature difference and activating the prompt unit. The present invention can judge and show refrigerant shortage.

Description

The cold medium shortage suggestion device and the method thereof of air-conditioner
Technical field
The present invention relates to a kind of cold medium shortage suggestion device and method thereof of air-conditioner.
Background technology
In general, air-conditioner be for a home from home in the holding chamber to the indoor device that carries out the operation of cold-room or greenhouse, air-conditioner sucks and heats behind the room air or cool off, and it is discharged to indoor again.
For room air being heated or cooling off, above-mentioned air-conditioner includes: the freezing cycle device that is made of compressor, condenser, expander, evaporimeter; Room air is blown into blower in evaporimeter or the condenser.Above-mentioned air-conditioner is divided into substantially split type (separate type or split type) and integral type.
Identical on above-mentioned detachable air conditioner and the integral air conditioner function, detachable air conditioner is installed the indoor set with evaporimeter in the indoor, the off-premises station with compressor, condenser, expansion structure is installed in the outside, and connects indoor set and off-premises station by coolant piping.Integral air conditioner is indoor set and the integrated installation of off-premises station, and by the metope upper drill hole or hang on the window and directly install.
At the as above existing air-conditioner of structure, when above-mentioned compressor drives, above-mentioned compressor is discharged the gas coolant of HTHP, the gas coolant of the HTHP of discharging will be by above-mentioned condenser, and emit heat towards periphery and carry out condensation, the refrigerant of condensation will and be expanded to 2 attitude refrigerants of low-temp low-pressure by above-mentioned expander, the refrigerant that expands is by above-mentioned evaporimeter, heat around absorbing and evaporating, the refrigerant of evaporation will be recycled to above-mentioned compressor, carry out said process subsequently repeatedly.
But existing air-conditioner is when long-term the use, and coolant quantity reduces gradually, thereby need the periodic replenishment refrigerant, because the user is difficult for confirming the not enough situation of refrigerant, above-mentioned air-conditioner may be used under the state of cold medium shortage for a long time, or unnecessary frequent coolant adding.
Summary of the invention
In order to overcome the above-mentioned shortcoming that existing air-conditioner exists, the invention provides a kind of cold medium shortage suggestion device and method thereof of air-conditioner, so that the user can judge the not enough situation of refrigerant and carry out timely coolant adding.
The technical scheme that the cold medium shortage suggestion device of air-conditioner of the present invention is adopted is:
A kind of cold medium shortage suggestion device of air-conditioner is characterized in that, it includes following several sections: the outdoor temperature sensor that is used to detect outdoor temperature; Be used to detect the outdoor piping temperature sensor of the pipe arrangement temperature of off-premises station; Utilize the pipe arrangement temperature of the pipe arrangement temperature of outdoor temperature and off-premises station and indoor set to judge the cold medium shortage situation, and according to the control part of its judged result output signal; According to the signal of exporting in the above-mentioned control part, to the suggestion device of external prompt cold medium shortage situation.
The cold medium shortage suggestion device of aforesaid air-conditioner, wherein suggestion device is a light emitting diode.
The technical scheme that the cold medium shortage reminding method of air-conditioner of the present invention is adopted is:
A kind of cold medium shortage reminding method of air-conditioner is characterized in that, it comprises following several steps: in air-conditioner is operated, and the 1st step that the pipe arrangement temperature of the pipe arrangement temperature of outdoor temperature and off-premises station and indoor set is detected; The 2nd step of the temperature difference of the pipe arrangement temperature of the temperature that counting chamber is outer and the pipe arrangement temperature of off-premises station and indoor set; The 3rd step that the temperature difference calculated and design temperature difference are compared; When the temperature difference that calculates during, be judged as cold medium shortage and the 4th step of opening suggestion device greater than the design temperature difference.
The cold medium shortage reminding method of aforesaid air-conditioner, wherein the design temperature difference is after the pipe arrangement temperature of the pipe arrangement temperature of the outdoor temperature when quantitative and off-premises station with refrigerant and indoor set is carried out datumization, and the temperature difference of the pipe arrangement temperature by outer temperature of counting chamber and off-premises station and the pipe arrangement temperature of indoor set is set.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 be air-conditioner of the present invention cold medium shortage suggestion device one embodiment schematic diagram is set.
Fig. 2 is the flow chart of cold medium shortage reminding method one embodiment of air-conditioner of the present invention.
The number in the figure explanation
2: indoor set 4: indoor blower
6: evaporimeter 10: off-premises station
12: outdoor blower 14: compressor
16: condenser 18: expander
21,22,23,24: coolant piping 32: outdoor temperature sensor
34: outdoor piping temperature sensor 36: the indoor tube temperature sensor
38: control part 40: suggestion device
The specific embodiment
As shown in Figure 1, in the air-conditioner of the embodiment of the invention, indoor set (2) includes: indoor air is drawn into the inside of indoor set (2), and is discharged to indoor indoor blower (4) again; Refrigerant evaporation and the evaporimeter (6) that room air is cooled off.Off-premises station (10) includes: outdoor air is drawn into the inside of off-premises station (10), and is discharged to outdoor outdoor blower (12) again; Compressor (14) with gas coolant boil down to high-temperature high-pressure state; The gas coolant of the HTHP of above-mentioned compression is emitted heat and is carried out condenser condensing (16) to outdoor air; The expander that the refrigerant of above-mentioned condensation expands (18).Above-mentioned evaporimeter (6), compressor (14), condenser (16), expander (18) connect by coolant piping (21,22,23,24).
In order to control the overheated of above-mentioned evaporimeter (6), above-mentioned expander (18) is made of the electric expansion valve that changes expansion stream and adjustable capacity by magnetic valve.
Simultaneously, above-mentioned air-conditioner also includes the not enough suggestion device of coolant quantity, and it can be prompted to external user with the not enough situation that is circulated in the refrigerant of above-mentioned evaporimeter, compressor, condenser, expander.
The not enough suggestion device of above-mentioned coolant quantity includes: the outdoor temperature sensor (32) that is used for the temperature (To) outside the sensing chamber; Be used to detect the outdoor piping temperature sensor (34) of the pipe arrangement temperature (Tpo) of off-premises station (10); Be used to detect the indoor tube temperature sensor (36) of the pipe arrangement temperature (Tpi) of indoor set (2); The pipe arrangement temperature (Tpo) by outdoor temperature (To) and off-premises station (10) and the pipe arrangement temperature (Tpi) of indoor set (2) are judged the cold medium shortage situation, and according to the control part (38) of above-mentioned judged result output signal; According to the suggestion device (40) of the signal of exporting in the above-mentioned control part (38) to external prompt cold medium shortage situation.
Above-mentioned suggestion device (40) can be installed on the off-premises station (10), but for making the user can confirm the cold medium shortage situation rapidly, above-mentioned suggestion device (40) preferably is installed on the indoor set (2).
Above-mentioned suggestion device (40) is preferably by light emitting diode (LED:light emission diode) or liquid crystal indicator display unit such as (LCD:liquid crystal display), and the sound-producing devices such as buzzer of the sound that gives a warning during cold medium shortage constitute.
The following describes the as above ruuning situation of the suggestion device of structure.
As shown in Figure 2, in air-conditioner is operated, at first the pipe arrangement temperature (Tpo) of outdoor temperature (To) and off-premises station (10) and the pipe arrangement temperature (Tpi) of indoor set (2) are detected (S1).
Above-mentioned control part (38) calculate the pipe arrangement temperature (Tpo) of above-mentioned outdoor temperature (To) and off-premises station (10) and indoor set (2) pipe arrangement temperature (Tpi) temperature difference (DELTAT) (S2).
Wherein, above-mentioned control part (38) can be set at said temperature poor (Δ T) with the temperature difference of the pipe arrangement temperature (Tpi) of outdoor temperature (To) and indoor set (2); Or the temperature difference of the pipe arrangement temperature (Tpi) of the pipe arrangement temperature (Tpo) of off-premises station (10) and indoor set (2) is set at said temperature poor (Δ T); Or the temperature difference of the pipe arrangement temperature (Tpi) of the pipe arrangement temperature (Tpi) of the pipe arrangement temperature (Tpo) of off-premises station (10) and indoor set (2) is average and indoor set is set at said temperature poor (Δ T).
Above-mentioned control part (38) compares (S3) with the temperature difference (Δ T) that calculates with design temperature poor (Δ T ').
Above-mentioned design temperature poor (Δ T ') is after the pipe arrangement temperature (Tpo ') of outdoor temperature when quantitative (To ') and off-premises station and the pipe arrangement temperature of indoor set (Tpi ') are carried out datumization with refrigerant, and the temperature difference of the pipe arrangement temperature of pipe arrangement temperature by outer temperature of counting chamber (To ') and off-premises station (Tpo ') and indoor set (Tpi ') is set.
Above-mentioned control part (38), then is judged as cold medium shortage, and opens above-mentioned suggestion device (40) (S4) during greater than design temperature poor (Δ T ') in the temperature difference that calculates (Δ T).
In addition, above-mentioned control part (38) is also controlled the overheat condition (S5) of above-mentioned expander (18) in the time of external prompt cold medium shortage situation.
The Xiao fruit of invention
The as above cold medium shortage suggestion device of the air-conditioner of the present invention of structure, it includes: utilize air-conditioner Temperature conditions judge the control part of cold medium shortage situation; Operate by above-mentioned control part, Xiang the outside The suggestion device of prompting cold medium shortage situation. Thereby make Yong Hu confirm easily the cold medium shortage situation, and press Zui Good Zhuan attitude is used air-conditioner.
And, the cold medium shortage reminding method of the air-conditioner of Zhong of the present invention, the Zai air-conditioner operates Zhong, profit The pipe arrangement Wen degree of the Wen degree that Yong is outdoor and the pipe arrangement Wen Du of off-premises station and indoor set is judged the cold medium shortage situation, And Xiang the above-mentioned judged result of external prompt, make Yong Hu Xun speed Zhun really judge the not enough situation of refrigerant, thereby Wu The refrigerant detecting sensor that Xu is other.

Claims (4)

1, a kind of cold medium shortage suggestion device of air-conditioner is characterized in that, it includes following several sections:
Be used to detect the outdoor temperature sensor of outdoor temperature; Be used to detect the outdoor piping temperature sensor of the pipe arrangement temperature of off-premises station; Utilize the pipe arrangement temperature of the pipe arrangement temperature of outdoor temperature and off-premises station and indoor set to judge the cold medium shortage situation, and according to the control part of its judged result output signal; According to the signal of exporting in the above-mentioned control part, to the suggestion device of external prompt cold medium shortage situation.
2, the cold medium shortage suggestion device of air-conditioner according to claim 1 is characterized in that, above-mentioned suggestion device is a light emitting diode.
3, a kind of cold medium shortage reminding method of air-conditioner is characterized in that, it comprises following several steps:
In air-conditioner is operated, the 1st step that the pipe arrangement temperature of the pipe arrangement temperature of outdoor temperature and off-premises station and indoor set is detected;
The 2nd step of the temperature difference of the pipe arrangement temperature of the temperature that counting chamber is outer and the pipe arrangement temperature of off-premises station and indoor set;
The 3rd step that the temperature difference calculated and design temperature difference are compared;
When the temperature difference that calculates during, be judged as cold medium shortage and the 4th step of opening suggestion device greater than the design temperature difference.
4, the cold medium shortage reminding method of air-conditioner according to claim 3, it is characterized in that, above-mentioned design temperature difference is after the pipe arrangement temperature of the pipe arrangement temperature of the outdoor temperature when quantitative and off-premises station with refrigerant and indoor set is carried out datumization, and the temperature difference of the pipe arrangement temperature by outer temperature of counting chamber and off-premises station and the pipe arrangement temperature of indoor set is set.
CN 200410093672 2004-11-29 2004-11-29 Device and method for prompting cold medium shortage of air conditioner Pending CN1782577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200410093672 CN1782577A (en) 2004-11-29 2004-11-29 Device and method for prompting cold medium shortage of air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200410093672 CN1782577A (en) 2004-11-29 2004-11-29 Device and method for prompting cold medium shortage of air conditioner

Publications (1)

Publication Number Publication Date
CN1782577A true CN1782577A (en) 2006-06-07

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CN 200410093672 Pending CN1782577A (en) 2004-11-29 2004-11-29 Device and method for prompting cold medium shortage of air conditioner

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100451473C (en) * 2006-10-12 2009-01-14 珠海格力电器股份有限公司 Air conditioner with refrigerating medium lack and accident detection functions and method for detecting accidents
CN101566517B (en) * 2009-05-26 2010-11-17 宁波奥克斯电气有限公司 Method for judging refrigerant leakage of air-conditioner
CN103375874A (en) * 2012-04-23 2013-10-30 珠海格力电器股份有限公司 Air conditioner and refrigerant circulation abnormality protection control method for same
CN103557578A (en) * 2013-11-04 2014-02-05 宁波奥克斯电气有限公司 Protection method for lack of fluorine of air-cooled module type cold hot water unit
CN104101051A (en) * 2014-06-24 2014-10-15 广东美的集团芜湖制冷设备有限公司 Air conditioner and detection control method and device for abnormal coolant circulation of air conditioner
CN104412050A (en) * 2012-06-28 2015-03-11 株式会社电装 Heat pump cycle
CN104879972A (en) * 2015-06-03 2015-09-02 广东美的暖通设备有限公司 Refrigeration system, and method and device for automatically filling refrigeration system with refrigerants
CN105091215A (en) * 2015-07-24 2015-11-25 珠海格力电器股份有限公司 Fluorine lack start-up detection method and device for multi-split air-conditioner
CN105241070A (en) * 2015-11-06 2016-01-13 珠海格力电器股份有限公司 Method and device for protecting and controlling air-source water heater short of fluorine and air-source water heater
CN107477775A (en) * 2017-08-07 2017-12-15 珠海格力电器股份有限公司 Cold draining matchmaker detection method, device, storage device, terminal and the air-conditioning of air-conditioning
CN109883011A (en) * 2018-12-24 2019-06-14 珠海格力电器股份有限公司 Refrigerant adjusting method, device and air-conditioning system
CN110094843A (en) * 2019-05-07 2019-08-06 珠海格力电器股份有限公司 The method and apparatus of control air-conditioning based on scarce refrigerant grade

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100451473C (en) * 2006-10-12 2009-01-14 珠海格力电器股份有限公司 Air conditioner with refrigerating medium lack and accident detection functions and method for detecting accidents
CN101566517B (en) * 2009-05-26 2010-11-17 宁波奥克斯电气有限公司 Method for judging refrigerant leakage of air-conditioner
CN103375874A (en) * 2012-04-23 2013-10-30 珠海格力电器股份有限公司 Air conditioner and refrigerant circulation abnormality protection control method for same
CN103375874B (en) * 2012-04-23 2016-03-02 珠海格力电器股份有限公司 The refrigerant circulation abnormal protection control method of air-conditioner and air-conditioner
CN104412050B (en) * 2012-06-28 2016-08-10 株式会社电装 heat pump circulating system
CN104412050A (en) * 2012-06-28 2015-03-11 株式会社电装 Heat pump cycle
CN103557578A (en) * 2013-11-04 2014-02-05 宁波奥克斯电气有限公司 Protection method for lack of fluorine of air-cooled module type cold hot water unit
CN103557578B (en) * 2013-11-04 2016-02-03 宁波奥克斯电气股份有限公司 Air-cooled modular cold and hot water unit lacks the guard method of fluorine
CN104101051A (en) * 2014-06-24 2014-10-15 广东美的集团芜湖制冷设备有限公司 Air conditioner and detection control method and device for abnormal coolant circulation of air conditioner
CN104101051B (en) * 2014-06-24 2017-01-18 广东美的集团芜湖制冷设备有限公司 Air conditioner and detection control method and device for abnormal coolant circulation of air conditioner
CN104879972A (en) * 2015-06-03 2015-09-02 广东美的暖通设备有限公司 Refrigeration system, and method and device for automatically filling refrigeration system with refrigerants
CN105091215B (en) * 2015-07-24 2018-02-09 珠海格力电器股份有限公司 Multi-gang air-conditioner lacks the start-up detection method and device of fluorine
CN105091215A (en) * 2015-07-24 2015-11-25 珠海格力电器股份有限公司 Fluorine lack start-up detection method and device for multi-split air-conditioner
CN105241070A (en) * 2015-11-06 2016-01-13 珠海格力电器股份有限公司 Method and device for protecting and controlling air-source water heater short of fluorine and air-source water heater
CN105241070B (en) * 2015-11-06 2019-01-15 珠海格力电器股份有限公司 Air energy water heater lacks fluorine protection control method, device and air energy water heater
CN107477775A (en) * 2017-08-07 2017-12-15 珠海格力电器股份有限公司 Cold draining matchmaker detection method, device, storage device, terminal and the air-conditioning of air-conditioning
CN107477775B (en) * 2017-08-07 2019-07-09 珠海格力电器股份有限公司 Cold draining matchmaker detection method, device, storage equipment, terminal and the air-conditioning of air-conditioning
CN109883011A (en) * 2018-12-24 2019-06-14 珠海格力电器股份有限公司 Refrigerant adjusting method, device and air-conditioning system
CN110094843A (en) * 2019-05-07 2019-08-06 珠海格力电器股份有限公司 The method and apparatus of control air-conditioning based on scarce refrigerant grade

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Open date: 20060607

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