CN101418981A - Method for enhancing heating capacity of frequency converting air-conditioner at low-temperature and the frequency converting air-conditioner - Google Patents

Method for enhancing heating capacity of frequency converting air-conditioner at low-temperature and the frequency converting air-conditioner Download PDF

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Publication number
CN101418981A
CN101418981A CNA2008101607995A CN200810160799A CN101418981A CN 101418981 A CN101418981 A CN 101418981A CN A2008101607995 A CNA2008101607995 A CN A2008101607995A CN 200810160799 A CN200810160799 A CN 200810160799A CN 101418981 A CN101418981 A CN 101418981A
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conditioner
air
heating
frequency air
predetermined temperature
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CNA2008101607995A
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Chinese (zh)
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CN101418981B (en
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汪韬
陆汉宁
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海信(山东)空调有限公司
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Publication of CN101418981A publication Critical patent/CN101418981A/en
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Abstract

The invention discloses a method for improving low-temperature heating capacity of a convertible frequency air-conditioner and the convertible frequency air-conditioner. The convertible frequency air-conditioner comprises a main control unit and an auxiliary electrical heating device. Under a start-up condition of auxiliary electrical heating, the main control unit controls the electrical heating unit to work, and, under a stop condition of auxiliary electrical heating, the main control unit controls the electrical heating unit to stop working, thereby improving the heating capacity of the convertible frequency air-conditioner during low-temperature heat generation and saving energy during low-temperature heat generation.

Description

Improve the method and the convertible frequency air-conditioner of low-temperature heating of variable frequency air conditioner amount

Technical field

The present invention relates to a kind of heating method of convertible frequency air-conditioner, specifically, relate to a kind of method that improves the low-temperature heating of variable frequency air conditioner amount, belong to the air-conditioner technical field.

Background technology

Cooling/heating air conditioner in the market has common constant speed air-conditioning, the auxiliary electrically heated constant speed air-conditioning of band and convertible frequency air-conditioner.The compressor rotary speed of common constant speed air-conditioning is constant, and in general, the suitable environment temperature when this air-conditioning heats is about 6 ℃, and EAT whenever hangs down 1 ℃, and its heating effect will reduce about 5%.So along with the decline of temperature, common constant speed air-conditioning heats not hot phenomenon and often occurs, even can occur can't starting the problem that heats at a lower temperature.

For solving the above-mentioned defective of common constant speed air conditioner low temperature heating, many constant speed air-conditionings have increased auxiliary electric heater unit, when outdoor temperature is low, rely on electrical heating to obtain certain heat, improve the heating effect of air-conditioning.But because the electric heater unit thermal conversion efficiency is lower, it is bigger to consume energy, and temperature is low more, and the power of the auxiliary electric heater unit that need use is also big more, the serious waste electric energy.

Convertible frequency air-conditioner is the air-conditioning that grows up recent years, and it uses frequency-changeable compressor and fuzzy control technology, can regulate compressor rotary speed according to the variation of indoor air temperature, has the advantage that noise is little, power consumption is low.Because the compressor rotary speed of transducer air conditioning can change with the variation of supply frequency, when outdoor temperature was low, transducer air conditioning can be worked under high frequency, and compressor runs up, can keep very high heat, make convertible frequency air-conditioner also can bring into play heating capacity at low temperatures.But convertible frequency air-conditioner relies on the compressor heating effect that runs up relatively poor at low temperatures merely, and owing to need compressor to run up for a long time, consumed energy is bigger, and is incompatible with the energy-conservation theory of convertible frequency air-conditioner.

Summary of the invention

The relatively poor technical problem of effect when the present invention is directed in the prior art low-temperature heating of variable frequency air conditioner, a kind of method that improves the low-temperature heating of variable frequency air conditioner amount is provided, having reached to increase the heating capacity of convertible frequency air-conditioner when low-temperature heating, again can be when non-low-temperature heating purpose of energy saving.

For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:

A kind of method that improves the low-temperature heating of variable frequency air conditioner amount, described convertible frequency air-conditioner comprises main control unit, it is characterized in that, is provided with auxiliary electric heater unit in the described convertible frequency air-conditioner, when satisfying auxiliary electrical heating unlocking condition, described main control unit is controlled described electric heater unit work; When satisfying auxiliary electrical heating and close condition, described main control unit is controlled described electric heater unit and is quit work.

According to method of the present invention, described auxiliary electrical heating unlocking condition is:

Air conditioning chamber's inner blower is in operating condition;

Compressor of air conditioner is opened;

The operation of air conditioner pattern is heating mode or automatic heating mode;

The design temperature of air-conditioning and the difference of indoor temperature are not less than first predetermined temperature value;

Indoor temperature is less than second predetermined temperature value;

The air-conditioning indoor coil pipe is less than the 3rd predetermined temperature value;

Outdoor temperature is not more than the 4th predetermined temperature value.

Preferably, described the 4th predetermined temperature value is 0 ℃.

According to method of the present invention, the described auxiliary electrical heating condition of closing is any in the following condition:

Air conditioning chamber's inner blower is closed;

The operation of air conditioner pattern is non-heating mode and non-automatic system heat pattern;

The design temperature of air-conditioning and the difference of indoor temperature are not more than the 5th predetermined temperature value;

Indoor temperature is greater than the 6th predetermined temperature value;

The air-conditioning indoor coil pipe is greater than the 7th predetermined temperature value;

Outdoor temperature is greater than the 8th predetermined temperature value.

Preferably, described the 8th predetermined temperature value is 2 ℃.

The present invention also provides a kind of convertible frequency air-conditioner, comprise main control unit, it is characterized in that, also be provided with auxiliary electric heater unit in the described convertible frequency air-conditioner, described auxiliary electric heater unit comprises electric heating tube and the gate-controlled switch circuit of connecting with described electric heating tube, described main control unit output outputs control signals to the control end of described gate-controlled switch circuit, the break-make of gauge tap circuit.

According to convertible frequency air-conditioner of the present invention, described gate-controlled switch circuit is a relay circuit, the coil of described relay is connected between coil power supply power supply and the described control signal terminal, and the switch series of described relay is associated in the power supply circuits of described electric heating tube.

According to convertible frequency air-conditioner of the present invention, described auxiliary electric heater unit also comprises the holding circuit of connecting with described electric heating tube.

Preferably, described holding circuit is the series connection holding circuit that thermal protector and fuse are formed.

According to convertible frequency air-conditioner of the present invention, described auxiliary electric heater unit is arranged on the support of fixing A/C evaporator.

Compared with prior art, advantage of the present invention and good effect are: the present invention adopts a kind of optimal control mode, and the control convertible frequency air-conditioner is opened the auxiliary electrical heating heating effect is compensated under low temperature condition, and closes the auxiliary electrical heating under non-low temperature condition.Like this, both accomplish to satisfy under the low temperature condition winter demand of convertible frequency air-conditioner heating capacity, and can under non-low temperature condition, rely on air-conditioning self heating capacity to heat again, reached purpose of power saving, improved the competitiveness of product in market.

Description of drawings

Fig. 1 is the control circuit schematic diagram that is provided with an embodiment of convertible frequency air-conditioner of auxiliary electric heater unit of the present invention.

The specific embodiment

The present invention is further detailed explanation below in conjunction with accompanying drawing.

The invention provides a kind of method that improves the low-temperature heating of variable frequency air conditioner amount, the essence of this method is that auxiliary electric heater unit is set in convertible frequency air-conditioner, by the main control unit of air-conditioning described auxiliary electric heater unit is controlled.When satisfying auxiliary electrical heating unlocking condition, described main control unit sends control signal and controls described auxiliary electric heater unit work, the heating effect of air-conditioning is compensated, to improve the heating capacity of air-conditioning; And when satisfying auxiliary electrical heating and close condition, described main control unit sends control signal and controls described auxiliary electric heater unit and quit work, and reaches purpose of energy saving.

Because the principle of convertible frequency air-conditioner is different from the constant speed air-conditioning, and the main advantage of convertible frequency air-conditioner is that energy consumption is low.So in said method, the auxiliary electrical heating unlocking condition and the condition of closing are bigger to the influence of heat pump performance.

Auxiliary electrical heating unlocking condition of the present invention comprises following necessary condition: air conditioning chamber's inner blower is in operating condition; Compressor of air conditioner is opened; The operation of air conditioner pattern is heating mode or automatic heating mode; The design temperature of air-conditioning and the difference of indoor temperature are not less than first predetermined temperature value; Indoor temperature is less than second predetermined temperature value; The air-conditioning indoor coil pipe is less than the 3rd predetermined temperature value; Outdoor temperature is not more than the 4th predetermined temperature value.Only when above-mentioned each condition all satisfied, main control unit just sent the control signal of auxiliary electric heater unit work.In above-mentioned each necessary condition, first predetermined temperature value, second predetermined temperature value, the 3rd predetermined temperature value and the 4th predetermined temperature value can specifically be set according to the performance parameter of different air-conditionings, the situations such as environment of air-conditioning territory of use.Wherein, the 4th predetermined temperature value is preferably 0 ℃.

The auxiliary electrical heating condition of closing of the present invention comprises following every adequate condition: air conditioning chamber's inner blower is closed; The operation of air conditioner pattern is non-heating mode and non-automatic system heat pattern; The design temperature of air-conditioning and the difference of indoor temperature are not more than the 5th predetermined temperature value; Indoor temperature is greater than the 6th predetermined temperature value; The air-conditioning indoor coil pipe is greater than the 7th predetermined temperature value; Outdoor temperature is greater than the 8th predetermined temperature value.That is to say that as long as satisfied wherein each in the above-mentioned adequate condition, main control unit will send control signal, the control auxiliary electric heater unit quits work.In above-mentioned each adequate condition, the 5th predetermined temperature value, the 6th predetermined temperature value, the 7th predetermined temperature value and the 8th predetermined temperature value can specifically be set according to the performance parameter of different air-conditionings, the situations such as environment of air-conditioning territory of use.Wherein, the 8th predetermined temperature value is preferably 2 ℃.

Fig. 1 is the control circuit schematic diagram that is provided with an embodiment of convertible frequency air-conditioner of auxiliary electric heater unit of the present invention.Comprise a main control chip IC1 in the described convertible frequency air-conditioner main control unit, the output pin 25 of IC1 is connected with an input pin 5 that drives chip IC 2.The output pin 13 of described driving chip connects the coil terminals 2 of relay circuit RY7, another coil terminals 1 connection+12V coil power supply power supply of RY7.The switch terminal 3 and 4 of described relay circuit RY7 is connected in the electric heating tube power supply circuits; wherein; the terminal 3 of RY7 connects the live wire of 220V electric heating tube power supply by fuse F1; and the terminal 4 of RY7 connects electric heating tube M, and then is connected the zero line of 220V electric heating tube power supply with the holding circuit that fuse is formed by the thermal protector of series connection.

Above-mentioned control circuit operation principle is as follows: main control chip IC1 constantly reads the signal of inner each the sensor output of air-conditioning, when satisfying auxiliary electrical heating unlocking condition, also be that air conditioning chamber's inner blower is in operating condition, compressor of air conditioner is opened, the operation of air conditioner pattern is heating mode or automatic heating mode, the design temperature of air-conditioning and the difference of indoor temperature are not less than first predetermined temperature value, indoor temperature is less than second predetermined temperature value, when the air-conditioning indoor coil pipe is not more than 0 ℃ less than the 3rd predetermined temperature value and outdoor temperature, high-level control signal of output pin 25 outputs of main control chip IC1 is to the input pin 5 that drives chip IC 2, described high-level control signal through drive chip IC 2 oppositely after, from the output pin 13 outputs one low level control signal of IC2.Thereby it is electric to make that relay R Y7 coil gets, the switch adhesive of RY7, and the electric heating tube power supply circuits conducting of 220V, electric heating tube M starts working, for air-conditioning heats the raising auxiliary energy.And close condition when main control chip IC1 detects the auxiliary electrical heating, also be that air conditioning chamber's inner blower is closed, perhaps the operation of air conditioner pattern is non-heating mode and non-automatic system heat pattern, perhaps the difference of the design temperature of air-conditioning and indoor temperature is not more than the 5th predetermined temperature value, perhaps indoor temperature is greater than the 6th predetermined temperature value, perhaps the air-conditioning indoor coil pipe is greater than the 7th predetermined temperature value, when perhaps outdoor temperature is greater than 2 ℃, low level control signal of pin 25 outputs of main control chip IC1, this signal through drive chip IC 2 oppositely after, export the terminal 2 of a high level signal to relay R Y7.Relay R Y7 coil losing electricity, switch disconnects, and electric heating tube M outage quits work, and reaches purpose of energy saving.

The gate-controlled switch circuit that above-mentioned relay is formed also can adopt realizations such as triode, gate-controlled switch chip.

With the constant speed air-conditioning (calling first air-conditioning in the following text) that is provided with the 1800W auxiliary electric heater unit, the convertible frequency air-conditioner (calling second air-conditioning in the following text) that auxiliary electric heater unit is not set and to be provided with the 1300W auxiliary electric heater unit and to adopt the convertible frequency air-conditioner (calling the 3rd air-conditioning in the following text) of control method of the present invention in described second air-conditioning be that example is carried out the heating capacity test.Result of the test shows: below 0 ℃, the heating capacity of first air-conditioning is higher than the heating capacity of second air-conditioning, and the heating capacity of the 3rd air-conditioning is higher than the heating capacity of first air-conditioning.More than 2 ℃ the time, the heating capacity of the 3rd air-conditioning is higher than the heating capacity of first air-conditioning.

Hence one can see that, in outdoor temperature is below 0 ℃ the time, the heating effect that has increased the constant speed air-conditioning of 1800W is better than common not with the convertible frequency air-conditioner of auxiliary electric heater unit, if heat and the 1300W auxiliary electrical is set in convertible frequency air-conditioner, and when low temperature, open, though its power is less than the power of the electric heater unit in the constant speed air-conditioning, its heating effect obviously is better than the constant speed air-conditioning.And be more than 2 ℃ the time in outdoor temperature, the auxiliary electric heater unit in the convertible frequency air-conditioner quits work, and the heating effect of convertible frequency air-conditioner is still good than constant speed air-conditioning.Therefore, adopt the method for raising low-temperature heating of variable frequency air conditioner amount of the present invention, not only can improve the heating effect under the convertible frequency air-conditioner low temperature, and when temperature satisfies certain condition, in time close electrical heating, reach the purpose of saves energy.

Certainly; the above only is a kind of preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1, a kind of method that improves the low-temperature heating of variable frequency air conditioner amount, described convertible frequency air-conditioner comprises main control unit, it is characterized in that, is provided with auxiliary electric heater unit in the described convertible frequency air-conditioner, when satisfying auxiliary electrical heating unlocking condition, described main control unit is controlled described electric heater unit work; When satisfying auxiliary electrical heating and close condition, described main control unit is controlled described electric heater unit and is quit work.
2, the method for raising low-temperature heating of variable frequency air conditioner amount according to claim 1 is characterized in that, described auxiliary electrical heating unlocking condition is:
Air conditioning chamber's inner blower is in operating condition;
Compressor of air conditioner is opened;
The operation of air conditioner pattern is heating mode or automatic heating mode;
The design temperature of air-conditioning and the difference of indoor temperature are not less than first predetermined temperature value;
Indoor temperature is less than second predetermined temperature value;
The air-conditioning indoor coil pipe is less than the 3rd predetermined temperature value;
Outdoor temperature is not more than the 4th predetermined temperature value.
3, the method for raising low-temperature heating of variable frequency air conditioner amount according to claim 2 is characterized in that, described the 4th predetermined temperature value is 0 ℃.
According to the method for each described raising low-temperature heating of variable frequency air conditioner amount in the claim 1 to 3, it is characterized in that 4, the described auxiliary electrical heating condition of closing is any in the following condition:
Air conditioning chamber's inner blower is closed;
The operation of air conditioner pattern is non-heating mode and non-automatic system heat pattern;
The design temperature of air-conditioning and the difference of indoor temperature are not more than the 5th predetermined temperature value;
Indoor temperature is greater than the 6th predetermined temperature value;
The air-conditioning indoor coil pipe is greater than the 7th predetermined temperature value;
Outdoor temperature is greater than the 8th predetermined temperature value.
5, the method for raising low-temperature heating of variable frequency air conditioner amount according to claim 4 is characterized in that, described the 8th predetermined temperature value is 2 ℃.
6, a kind of convertible frequency air-conditioner, comprise main control unit, it is characterized in that, also be provided with auxiliary electric heater unit in the described convertible frequency air-conditioner, described auxiliary electric heater unit comprises electric heating tube and the gate-controlled switch circuit of connecting with described electric heating tube, described main control unit output outputs control signals to the control end of described gate-controlled switch circuit, the break-make of gauge tap circuit.
7, convertible frequency air-conditioner according to claim 6, it is characterized in that, described gate-controlled switch circuit is a relay circuit, and the coil of described relay is connected between coil power supply power supply and the described control signal terminal, and the switch series of described relay is associated in the power supply circuits of described electric heating tube.
8, according to claim 6 or 7 described convertible frequency air-conditioners, it is characterized in that described auxiliary electric heater unit also comprises the holding circuit of connecting with described electric heating tube.
9, convertible frequency air-conditioner according to claim 8 is characterized in that, described holding circuit is the series connection holding circuit that thermal protector and fuse are formed.
10, convertible frequency air-conditioner according to claim 6 is characterized in that, described auxiliary electric heater unit is arranged on the support of fixing A/C evaporator.
CN2008101607995A 2008-11-20 2008-11-20 Method for enhancing heating capacity of frequency converting air-conditioner at low-temperature and the frequency converting air-conditioner CN101418981B (en)

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Cited By (14)

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CN101929720A (en) * 2010-09-03 2010-12-29 广东美的电器股份有限公司 Electricity auxiliary heating control method of air conditioner
CN103199777A (en) * 2013-04-18 2013-07-10 中国扬子集团滁州扬子空调器有限公司 Outdoor motor control circuit of air conditioning system of brushless motor
CN104075405A (en) * 2014-06-23 2014-10-01 广东美的集团芜湖制冷设备有限公司 Auxiliary heating method and device
CN104422060A (en) * 2013-08-20 2015-03-18 广东美的制冷设备有限公司 Control method and device of air conditioner
CN104832992A (en) * 2015-05-11 2015-08-12 广东美的暖通设备有限公司 Low-temperature heating method and low-temperature heating system for air conditioner
CN104949295A (en) * 2014-03-24 2015-09-30 珠海格力电器股份有限公司 Water-cooling air-conditioner system for ships and control method thereof
CN105571047A (en) * 2014-10-14 2016-05-11 青岛海尔科技有限公司 Control method and device for rapid refrigerating or rapid heating of direct-current variable frequency air conditioner
CN105637298A (en) * 2013-09-30 2016-06-01 大金工业株式会社 Air-conditioning system and control method therefor
CN106500285A (en) * 2015-09-08 2017-03-15 周峙东 A kind of old-fashioned air conditioner electric concurrent heating system, control method and its air-conditioner
CN106766007A (en) * 2017-02-21 2017-05-31 青岛海尔空调器有限总公司 A kind of air-conditioner and the method for improving air-conditioner defrosting process comfort level
CN108168046A (en) * 2017-12-26 2018-06-15 珠海格力电器股份有限公司 A kind of air conditioning control method and air-conditioning
CN108278740A (en) * 2017-01-04 2018-07-13 奥克斯空调股份有限公司 A kind of control method and device of convertible frequency air-conditioner auxiliary electrical heater
CN108800489A (en) * 2018-06-20 2018-11-13 广东美的制冷设备有限公司 The control method and device of compressor winding heating
CN109506335A (en) * 2018-11-19 2019-03-22 珠海格力电器股份有限公司 Control method, system, storage medium and the air-conditioning of the auxiliary thermal of air conditioner electric

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CN2739525Y (en) * 2004-11-13 2005-11-09 珠海格力电器股份有限公司 Air conditioner electric heating device

Cited By (20)

* Cited by examiner, † Cited by third party
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CN101929720A (en) * 2010-09-03 2010-12-29 广东美的电器股份有限公司 Electricity auxiliary heating control method of air conditioner
CN103199777B (en) * 2013-04-18 2015-09-30 中国扬子集团滁州扬子空调器有限公司 Brushless electric machine air-conditioning system outdoor motor control circuit
CN103199777A (en) * 2013-04-18 2013-07-10 中国扬子集团滁州扬子空调器有限公司 Outdoor motor control circuit of air conditioning system of brushless motor
CN104422060A (en) * 2013-08-20 2015-03-18 广东美的制冷设备有限公司 Control method and device of air conditioner
CN104422060B (en) * 2013-08-20 2016-12-28 广东美的制冷设备有限公司 The control method of air-conditioner and device
CN105637298A (en) * 2013-09-30 2016-06-01 大金工业株式会社 Air-conditioning system and control method therefor
CN105637298B (en) * 2013-09-30 2017-05-17 大金工业株式会社 Air-conditioning system and control method therefor
CN104949295B (en) * 2014-03-24 2018-09-07 珠海格力电器股份有限公司 A kind of naval vessel water cooling air conditioning system and its control method
CN104949295A (en) * 2014-03-24 2015-09-30 珠海格力电器股份有限公司 Water-cooling air-conditioner system for ships and control method thereof
CN104075405B (en) * 2014-06-23 2016-08-17 广东美的集团芜湖制冷设备有限公司 Auxiliary heating means and assisted heating device
CN104075405A (en) * 2014-06-23 2014-10-01 广东美的集团芜湖制冷设备有限公司 Auxiliary heating method and device
CN105571047A (en) * 2014-10-14 2016-05-11 青岛海尔科技有限公司 Control method and device for rapid refrigerating or rapid heating of direct-current variable frequency air conditioner
CN104832992A (en) * 2015-05-11 2015-08-12 广东美的暖通设备有限公司 Low-temperature heating method and low-temperature heating system for air conditioner
CN106500285A (en) * 2015-09-08 2017-03-15 周峙东 A kind of old-fashioned air conditioner electric concurrent heating system, control method and its air-conditioner
CN108278740A (en) * 2017-01-04 2018-07-13 奥克斯空调股份有限公司 A kind of control method and device of convertible frequency air-conditioner auxiliary electrical heater
CN106766007A (en) * 2017-02-21 2017-05-31 青岛海尔空调器有限总公司 A kind of air-conditioner and the method for improving air-conditioner defrosting process comfort level
CN106766007B (en) * 2017-02-21 2020-02-21 青岛海尔空调器有限总公司 Air conditioner and method for improving comfort degree of air conditioner in defrosting process
CN108168046A (en) * 2017-12-26 2018-06-15 珠海格力电器股份有限公司 A kind of air conditioning control method and air-conditioning
CN108800489A (en) * 2018-06-20 2018-11-13 广东美的制冷设备有限公司 The control method and device of compressor winding heating
CN109506335A (en) * 2018-11-19 2019-03-22 珠海格力电器股份有限公司 Control method, system, storage medium and the air-conditioning of the auxiliary thermal of air conditioner electric

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