CN104566866A - Comprehensive anti-freezing method of air-conditioner - Google Patents
Comprehensive anti-freezing method of air-conditioner Download PDFInfo
- Publication number
- CN104566866A CN104566866A CN201510013496.0A CN201510013496A CN104566866A CN 104566866 A CN104566866 A CN 104566866A CN 201510013496 A CN201510013496 A CN 201510013496A CN 104566866 A CN104566866 A CN 104566866A
- Authority
- CN
- China
- Prior art keywords
- air
- conditioner
- compressor
- water temperature
- evaporimeter
- 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.)
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Classifications
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a comprehensive anti-freezing method of an air-conditioner; the method comprises the steps: firstly, when a compressor is started, detecting environmental temperature nearby a condenser and judging whether the environmental temperature is lower than 10 DEG C; if so, adjusting the openness of an electronic expansion valve to be 70% and lasting for three minutes and then normally starting the compressor. When air-conditioning equipment is provided with two compressors which share one evaporator, the lowest protection value of the output water temperature of the condenser in an air-conditioner control system is set to be 6 DEG C in a refrigerating model. The comprehensive anti-freezing method of the air-conditioner has the beneficial effects: with adoption of the scheme, the situation of lower pressure can be improved remarkably in the refrigerating model when the unit is started at low temperature and the freeze-off of an heat exchanger is avoided; therefore, the present air-conditioning equipment is greatly improved in anti-freezing performance on the premise that the structure is not changed; and the long-time stable operation of the whole air-conditioning unit can be guaranteed.
Description
Technical field
The present invention relates to air conditioner technical field, particularly a kind of air conditioner comprehensive means to prevent freezing.
Background technology
Along with the development of technology and the progress of society, air-conditioning, as a kind of household electrical appliance, enters family and office space widely.Air-conditioning equipment is generally distinguished according to heat transferring medium, adopts water to be a wherein common large class as heat transferring medium.Common water-side heat has double pipe heat exchanger, plate type heat exchanger and package class heat exchanger etc.
Plate type heat exchanger compact conformation, heat transfer efficiency is high, and cost performance is optimum.But, due to structural limitation, antifreeze ability extreme difference.Therefore, search out more perfect antifreeze control program, ensure that air-conditioning equipment quality is very necessary.
Summary of the invention
For solving above technical deficiency, the invention provides the air conditioner comprehensive means to prevent freezing that a kind of antifreeze ability is strong.
The present invention is achieved by the following measures:
A kind of air conditioner comprehensive means to prevent freezing of the present invention, comprises the following steps:
Step 1, when compressor start, detects the environment temperature near condenser, judges environment temperature
Whether be less than 10 DEG C, if so, then carry out step 2, if not, then normally start compressor; When air-conditioning equipment has two compressors and shares same evaporimeter, in cooling mode, carry out step 3;
Step 2, is adjusted to 70% by the aperture of electric expansion valve, and continues 3 minutes, then normally starts pressure
Contracting machine;
Step 3, detects the leaving water temperature T of evaporimeter delivery port in real time, and by the steaming in air-conditioner control system
The too low protection value of hair device leaving water temperature is set as 6 DEG C, when the leaving water temperature T detected is lower than 6 DEG C, starts the too low defence program of evaporimeter leaving water temperature.
The invention has the beneficial effects as follows: utilize the present invention program, obviously can improve the situation that when Unit Low starts under refrigeration mode, low pressure is lower, avoid heat exchanger to occur freezing problem; Make existing air-conditioning equipment, under the prerequisite of not change structure, significantly improve resistance to frost, ensure that whole air-conditioner set can stable operation for a long time.
Accompanying drawing explanation
Fig. 1 is the structural representation of air-conditioning system of the present invention.
Wherein: 1 compressor, 2 reversal valves, 3 electric expansion valves, 4 condensers, 5 evaporimeters.
Detailed description of the invention
Below in conjunction with accompanying drawing, further detailed description is done to the present invention:
A kind of air conditioner comprehensive means to prevent freezing of the present invention, for solving antifreeze the asking of evaporimeter 5 in air-conditioning equipment
Topic, the present invention increases some control methods in the control logic that it is antifreeze, realizes the lifting to the antifreeze ability of air-conditioning.As shown in Figure 1, at relevant position mounting temperature sensor, include the temperature sensor increasing temperature sensor and evaporimeter 5 delivery port near condenser 4 in environment.Heat-exchange working medium in compressor 1 low pressure inlet end is gaseous state, pressurizeed by compressor 1, the heat-exchange working medium (refrigerant) of gaseous state is converted into liquid heat-exchange working medium and release heat by four-way change-over valve 2 in condenser 4, water is heated, heat-exchange working medium in condenser 4 flows into evaporimeter 5 after electric expansion valve 3 throttling, heat-exchange working medium evaporates due to the reduction of pressure and becomes gaseous state in evaporimeter 5, and absorb heat, the heat-exchange working medium of gaseous state enters compressor 1, condensation and become liquid state in condenser 4 again after compressor 1 pressurizes, circulate and so forth, water heat transferring medium through with condenser 4 and evaporimeter 5 heat exchange and reach air conditioner refrigerating and the object that heats.
The present invention includes following steps:
Step 1, when compressor 1 starts, detects the environment temperature near condenser 4, judges environment
Whether temperature is less than 10 DEG C, if so, then carry out step 2, if not, then normally starts compressor 1; When air-conditioning equipment has two compressors 1 and shares same evaporimeter 5, in cooling mode, carry out step 3;
Step 2, is adjusted to 70% by the aperture of electric expansion valve 3, and continues 3 minutes, then normally starts
Compressor;
Step 3, detect in real time the leaving water temperature T of evaporimeter 5 delivery port, and by air-conditioner control system
The too low protection value of evaporimeter leaving water temperature is set as 6 DEG C, when the leaving water temperature T detected is lower than 6 DEG C, starts the too low defence program of evaporimeter leaving water temperature.
Environment temperature sensor is provided with in condenser 4 side; In evaporimeter 5, be respectively equipped with two water pipes, be respectively water inlet pipe and outlet pipe, and evaporate water temperature sensor at water outlet setting unit,
When environment temperature is lower than 10 DEG C, and user is when still using refrigeration mode, be in open state, when press receives the startup command of controller, electric expansion valve 3 aperture is adjusted to rapidly 70% of total aperture by original standby aperture, and maintain 3 minutes, to spend the cold-starting time, system is made to keep low pressure in allowed band.
When air-conditioning equipment has two press to share same evaporimeter 5, at unit running process, be bound to occur that single compressor 1 is in running status, in this case, due to evaporimeter 5 structure present situation, there will be has press to run side plate to change and be in the easy freezing stage, but integral unit evaporate coolant-temperature gage still higher phenomenon namely higher than 2 degree.When unit evaporates the antifreeze temperature spot of coolant-temperature gage arrival 2 degree, the plate type heat exchanger as evaporimeter 5 may be freezing.Still effective in order to make to evaporate warm too low protection value, need to change evaporate coolant-temperature gage point for antifreeze unit as 6 DEG C into, to ensure the reliable and stable operation of security of system.
The above is only the preferred embodiment of this patent; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the art of this patent principle; can also make some improvement and replacement, these improve and replace the protection domain that also should be considered as this patent.
Claims (1)
1. an air conditioner comprehensive means to prevent freezing, is characterized in that, comprises the following steps:
Step 1, when compressor start, detects the environment temperature near condenser, judges environment temperature
Whether be less than 10 DEG C, if so, then carry out step 2, if not, then normally start compressor; When air-conditioning equipment has two compressors and shares same evaporimeter, in cooling mode, carry out step 3;
Step 2, is adjusted to 70% by the aperture of electric expansion valve, and continues 3 minutes, then normally starts pressure
Contracting machine;
Step 3, detects the leaving water temperature T of evaporimeter delivery port in real time, and by the steaming in air-conditioner control system
The too low protection value of hair device leaving water temperature is set as 6 DEG C, when the leaving water temperature T detected is lower than 6 DEG C, starts the too low defence program of evaporimeter leaving water temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013496.0A CN104566866A (en) | 2015-01-12 | 2015-01-12 | Comprehensive anti-freezing method of air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510013496.0A CN104566866A (en) | 2015-01-12 | 2015-01-12 | Comprehensive anti-freezing method of air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104566866A true CN104566866A (en) | 2015-04-29 |
Family
ID=53083523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510013496.0A Pending CN104566866A (en) | 2015-01-12 | 2015-01-12 | Comprehensive anti-freezing method of air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104566866A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594964A (en) * | 2016-11-07 | 2017-04-26 | 珠海格力电器股份有限公司 | Control method for controlling operation of air conditioner system and air conditioner system |
| CN113757958A (en) * | 2020-06-04 | 2021-12-07 | 维谛技术有限公司 | Control method and device of air conditioning system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004218861A (en) * | 2003-01-09 | 2004-08-05 | Denso Corp | Drain pan anti-freezing structure in heat pump-type hot water supply unit |
| CN102105749A (en) * | 2008-10-29 | 2011-06-22 | 三菱电机株式会社 | Air conditioner |
| CN102901157A (en) * | 2012-08-29 | 2013-01-30 | 江苏雪梅制冷设备有限公司 | Central air-conditioning refrigerating unit |
| CN103851817A (en) * | 2012-11-29 | 2014-06-11 | 松下电器产业株式会社 | Refrigerating device |
| CN104005214A (en) * | 2013-02-22 | 2014-08-27 | 海尔集团公司 | Control method of heat pump clothes dryer expansion valve |
-
2015
- 2015-01-12 CN CN201510013496.0A patent/CN104566866A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004218861A (en) * | 2003-01-09 | 2004-08-05 | Denso Corp | Drain pan anti-freezing structure in heat pump-type hot water supply unit |
| CN102105749A (en) * | 2008-10-29 | 2011-06-22 | 三菱电机株式会社 | Air conditioner |
| CN102901157A (en) * | 2012-08-29 | 2013-01-30 | 江苏雪梅制冷设备有限公司 | Central air-conditioning refrigerating unit |
| CN103851817A (en) * | 2012-11-29 | 2014-06-11 | 松下电器产业株式会社 | Refrigerating device |
| CN104005214A (en) * | 2013-02-22 | 2014-08-27 | 海尔集团公司 | Control method of heat pump clothes dryer expansion valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594964A (en) * | 2016-11-07 | 2017-04-26 | 珠海格力电器股份有限公司 | Control method for controlling operation of air conditioner system and air conditioner system |
| CN113757958A (en) * | 2020-06-04 | 2021-12-07 | 维谛技术有限公司 | Control method and device of air conditioning system |
| CN113757958B (en) * | 2020-06-04 | 2022-12-27 | 维谛技术有限公司 | Control method and device of air conditioning system |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20150429 |