CN107401810A - The control method of air conditioner, the control device of air conditioner and air conditioner - Google Patents

Abstract

The invention provides a kind of control method of air conditioner, the control device and air conditioner of air conditioner, the control method of air conditioner includes：Record the temperature T1 of air conditioner coil pipe in first time frosting；Detect the temperature of outdoor environment, and the corresponding preset strategy of the temperature range according to residing for going out with the temperature of outdoor environment the temperature lookup of outdoor environment and the first preset temperature；Terminate defrost for the first time in air conditioner, and after air conditioner switches to heating mode, detect the temperature T of coil pipe, and when T T1 are less than or equal to the first preset temperature found out, the aperture of expansion valve and the opening and closing of the first heating element heater are controlled according to the preset strategy found out.The program can take different processing strategies in air conditioner soon frosting according to the temperature of outdoor environment, to control the work of heating element heater and expansion valve in the heating element heater and/or indoor set in coil pipe, so as to shorten the defrost cycle, reduce indoor temperature fluctuation, to realize lasting heating.

Description

The control method of air conditioner, the control device of air conditioner and air conditioner

Technical field

The present invention relates to household appliance technical field, more specifically, is related to a kind of control of the control method of air conditioner, air conditioner Device and air conditioner processed.

Background technology

At present, air conditioner in a heating mode, particularly in the winter time in the relatively low environment of outdoor temperature in use, it is outdoor The temperature of heat exchanger is lower than the temperature of external environment, therefore the steam of external environment can be condensed on outdoor heat exchanger and formed Frost, especially when the humidity of outdoor air is relatively large, the frosting problem of outdoor heat exchanger can be more serious, and frosting can reduce The air quantity of outdoor heat exchanger heat exchange, causes the heat transfer effect of outdoor heat exchanger to be deteriorated, influences the heat exchange property of whole air conditioner.And In order to ensure heating effect, on the one hand need to reduce frosting as far as possible, on the other hand need to carry out defrost to outdoor heat exchanger, and together When accelerate defrost speed, by the frozen water emptying on the chassis of air-conditioner outdoor unit, and more typical method is to utilize sky at present The four-way valve commutation of device is adjusted, so that air conditioner switches to refrigeration mode from heating mode, so as to utilize the high temperature of compressor discharge The refrigerant of high pressure enters outdoor heat exchanger, melts the frost on outdoor heat exchanger, the cycle of this traditional defrosting method is long, sternly Ghost image rings the heating effect and stability of air conditioner.

Therefore, defrost speed can be accelerated by how designing one kind, shorten the defrost cycle, to improve the heating of air conditioner effect The control method of the air conditioner of fruit, the control device of air conditioner and air conditioner turn into current urgent problem to be solved.

The content of the invention

It is contemplated that at least solves one of technical problem present in prior art or correlation technique.

The present invention is based on above mentioned problem, there is provided a kind of control method of air conditioner.

It is still another object of the present invention to provide a kind of control device of air conditioner.

A further object of the present invention is, there is provided a kind of air conditioner of the control device including above-mentioned air conditioner.

To achieve the above object, first aspect present invention embodiment provides a kind of control method of air conditioner, for sky Device is adjusted, the air conditioner includes outdoor heat exchanger and indoor heat exchanger, and is arranged on the outdoor heat exchanger and indoor heat exchange Expansion valve between device, the outdoor heat exchanger include coil pipe, the first heating element heater are provided with the coil pipe, wherein, it is described The control method of air conditioner includes：Record the temperature T1 of air conditioner coil pipe in first time frosting；Sensing chamber's outer shroud The temperature in border, and the temperature range according to residing for going out with the temperature of the outdoor environment temperature lookup of the outdoor environment is relative The preset strategy answered and the first preset temperature；Terminate defrost for the first time in the air conditioner, and the air conditioner switches to heating After pattern, the temperature T of the coil pipe is detected, and when T-T1 is less than or equal to first preset temperature found out, according to looking into The preset strategy found out controls the aperture of the expansion valve and the opening and closing of first heating element heater.

The control method of the air conditioner provided according to an embodiment of the invention, first the temperature of outdoor environment can be divided into more Individual section, and to the first preset temperature corresponding to each section one preset strategy of special setting and one, hereafter, just can After air conditioner starting up, during by air conditioner first time frosting, the temperature T1 of coil pipe is recorded, specifically, can be according to disk The rate of change of the temperature of pipe determines the timing node of air conditioner frosting, meanwhile, it can set one in the coil pipe of outdoor heat exchanger Individual first heating element heater, so as in the follow-up heating operation of air conditioner, can first detect the temperature of outdoor environment, and according to outdoor ring The temperature in border, the temperature range residing for the temperature of outdoor environment is found out, and find out the correspondence where the temperature of outdoor environment The preset strategy in section and the first preset temperature, the temperature for the coil pipe that then can constantly or discontinuously detect, and in detection When the temperature T of coil pipe and the temperature T1 during air conditioner first time frosting difference are less than or equal to the first preset temperature, that is, During temperature T1 during the very close air conditioner first time frosting of the temperature T of coil pipe, according to the preset strategy control first found out Heating element heater is opened, and/or the aperture of expansion valve is tuned up, and this kind is arranged on the very close air-conditionings of temperature T of the coil pipe of detection During temperature T1 during device first time frosting, that is, illustrate air conditioner soon frosting, therefore on the one hand can open the first heating element heater Carry out heating coil, so as to slow down frosting velocity, on the other hand can reduce the aperture of expansion valve, so as to slow down refrigerant Circulation rate, so that indoor heat exchanger can absorb more heats from refrigerant, to improve the utilization rate of heat, so as to Shorten the defrost cycle, reduce the temperature fluctuation of interior, to realize lasting heating, and then just can improve Consumer's Experience.

In addition, the control method of the air conditioner provided according to the above embodiment of the present invention also has following supplementary technology special Sign：

In the above-mentioned technical solutions, it is preferable that the temperature range includes the first temperature range and second temperature section, and The temperature of first temperature range is more than the temperature in the second temperature section；Wherein, it is corresponding with first temperature range The preset strategy be：Reduce the aperture of the expansion valve, the preset strategy corresponding with the second temperature section is： Reduce the aperture of the expansion valve, open first heating element heater.

In those technical schemes, the temperature of outdoor environment can be divided into two sections, Temperature range more than 5 DEG C is the first temperature range, and the temperature range less than or equal to 5 DEG C is second temperature section, is so existed When the temperature of outdoor environment is located at the first temperature range, illustrate that the temperature of outdoor environment is higher, therefore, indoor heating needs are not Greatly, therefore in air conditioner frosting, hardly cause the temperature fluctuation of interior, thus the first heating element heater need not be opened Heating coil, and only need to reduce the aperture of expansion valve to carry out certain compensation to the temperature of interior, now, by Do not opened in the first heating element heater, thus can save the energy, can prevent that fluctuations in indoor temperature is excessive again.And in outdoor ring When the temperature in border is located at second temperature section, illustrate that the temperature of outdoor environment is relatively low, therefore, indoor heating needs are relatively Greatly, therefore in air conditioner frosting, the temperature fluctuation of interior can be caused larger, thus on the one hand can be by expansion valve come to interior Temperature compensate, the first heating element heats coil pipe on the other hand can be opened, to slow down frosting velocity.This kind is set can root Two kinds of different measures are taken according to the temperature of outdoor environment, it is thus possible to which rationally corresponding place is taken according to the temperature of outdoor environment Reason strategy, so as to can prevent fluctuations in indoor temperature, and can enough accelerates defrost speed, shortens the defrost cycle, reduces product energy Consumption.

In any of the above-described technical scheme, it is preferable that the temperature range more than 5 DEG C is the first temperature range, less than or equal to 5 DEG C temperature be second temperature section；And/or first preset temperature corresponding with first temperature range is less than and institute State first preset temperature corresponding to second temperature section, or the corresponding with first temperature range described first default temperature Spend for 1 DEG C, first preset temperature corresponding with the second temperature section is 2 DEG C.

In those technical schemes, preferably using 5 DEG C of lines of demarcation as two temperature ranges, because, it is more than 5 DEG C, outdoor The temperature of environment is higher, therefore, in air conditioner defrost, is not easy the fluctuation for causing indoor temperature, thus only needs unlatching first Heating element heater, without by expansion valve, and when outdoor environment is less than 5 DEG C, in air conditioner defrost, easily cause interior The fluctuation of temperature, therefore, the first heating element heater is merely opened, can not compensate the fluctuation of indoor environment, therefore, reduced While the aperture of expansion valve, it is also necessary to the first heating element heater is opened, with heating coil, so as to be carried out to the temperature of interior Bidirectional compensating, and then can prevent that fluctuations in indoor temperature is larger.Meanwhile corresponding with the first temperature range the first preset temperature is small In the first preset temperature corresponding equal to second temperature section, specifically, such as, corresponding with the first temperature range first is pre- If temperature is 1 DEG C, the first preset temperature corresponding with second temperature section is 2 DEG C, so when the temperature of outdoor environment is lower, Temperature-compensating measure can be more taken in advance, to slow down frosting velocity earlier, and then just can preferably shorten the defrost cycle, And it is excessive to be better protected from fluctuations in indoor temperature.

In any of the above-described technical scheme, it is preferable that the control method of air conditioner also includes：According to the outdoor environment Temperature T finds out second preset temperature corresponding with the temperature range residing for the temperature of the outdoor environment；Record the sky The temperature T2 of device coil pipe at the end of first time defrost is adjusted, when T-T2 is more than the second preset temperature, closes described first Heating element heater, by the aperture regulation of the expansion valve to original state.

, can be after air conditioner unlatching, at the end of first time defrost, by the thermograph of coil pipe in those technical schemes The temperature T2 of coil pipe at the end of for first time defrost, specifically, it can confirm as defrost when compressor stops and terminate, certainly, It can confirm as defrost when four-way valve switches to heating mode from refrigeration defrost pattern and terminate, and the temperature of now coil pipe is remembered Record as T2.Meanwhile the range lookup that can shift to an earlier date according to where the temperature of outdoor environment goes out corresponding second preset temperature, so, When the temperature T and T2 of coil pipe difference are more than the second preset temperature, that is, illustrate that the temperature T of coil pipe has begun to increase, and Through terminating temperature during defrost for the first time higher than air conditioner, so as to illustrate, the frost on outdoor heat exchanger has been changed clean , otherwise, temperature T can not possibly be more than T2, therefore can close the first heating element heater, and by the aperture regulation of expansion valve to normally Aperture so that the first heating element heater can stop heating, to save energy consumption, and air conditioner can be enable to start normally to make Heat.

In any of the above-described technical scheme, it is preferable that the air conditioner also includes the be arranged in air conditioner room unit Two heating element heaters, the control method of the air conditioner also include：In first preset temperature that T-T1 is less than or equal to find out When, the opening and closing of second heating element heater is controlled according to the preset strategy found out.

In those technical schemes, when being additionally provided with the second heating element heater in the air conditioner room unit of air conditioner, work as disk The temperature of pipe close to air conditioner frosting temperature when, can also according to preset strategy control the second heating element heater opening and closing, so as to energy Enough environment temperatures according to outdoor determine the need for opening the second heating element heater, so as to extremely low in outdoor environment temperature When, the second heating element heater is opened, further to be compensated to indoor temperature, to prevent indoor temperature undue fluctuation.

In any of the above-described technical scheme, it is preferable that the temperature range includes the first temperature range, second temperature section With the 3rd temperature range, and the temperature of first temperature range be more than the second temperature section temperature, it is described second temperature The temperature for spending section is more than the temperature of the 3rd temperature range；Wherein, it is corresponding with first temperature range described default Strategy is：Reduce the aperture of the expansion valve, the preset strategy corresponding with the second temperature section is：Reduce described swollen The aperture of swollen valve, opens the first heating element heater, and the preset strategy corresponding with the 3rd temperature range is：Reduce described swollen The aperture of swollen valve, the first heating element heater is opened, open the second heating element heater.

In those technical schemes, the temperature of outdoor environment can be divided into three sections, DEG C it is boundary, the temperature range more than 5 DEG C is the first temperature range, and the temperature ranges more than or equal to minus 5 DEG C less than or equal to 5 DEG C are Second temperature section, it is the 3rd temperature range less than minus 5 DEG C of small temperature ranges, is so located at first in the temperature of outdoor environment During temperature range, illustrate that the temperature of outdoor environment is higher, therefore, indoor heating needs are little, therefore in air conditioner frosting, Hardly cause the temperature fluctuation of interior, thus the first heating element heater need not be opened and carry out heating coil, and only need to reduce Once the aperture of expansion valve is to carry out certain compensation to the temperature of interior, now, because the first heating element heater is not opened Open, thus can save the energy, can prevent that fluctuations in indoor temperature is excessive again.And the temperature in outdoor environment is located at second temperature During section, illustrate the temperature of outdoor environment than relatively low, therefore, indoor heating needs are bigger, therefore in air conditioner frosting, The temperature of interior can be caused there is certain fluctuation, thus on the one hand the temperature of interior can be compensated by expansion valve, On the other hand the first heating element heats coil pipe can be opened, to slow down frosting velocity, simultaneously as the temperature of outdoor environment is also not It is especially low, therefore has been able to ensure that the temperature fluctuation of interior is little by the compensation of the first heating element heater and expansion valve, because This, it is not necessary that the second heating element heater is opened, and then just can save energy consumption, and the temperature in outdoor environment is located at the 3rd temperature During section, then illustrate that outdoor environment temperature is too low, therefore, rely only on expansion valve and the first heating element heater, at all can not compensated chamber The fluctuation of interior temperature, therefore, now, the second heating element heater can be opened, further to be compensated to the temperature of interior, to prevent Fluctuations in indoor temperature is excessive.This kind is set can take three kinds of different measures according to the temperature of outdoor environment, it is thus possible to according to The temperature of outdoor environment takes rationally corresponding processing strategy, so as to prevent fluctuations in indoor temperature, and can enough quickenings White speed, shorten the defrost cycle, reduce product energy consumption.

In any of the above-described technical scheme, it is preferable that the temperature range more than 5 DEG C is the first temperature range, is more than or equal to The minus 5 DEG C temperature ranges less than or equal to 5 DEG C are second temperature section, and the temperature range less than minus 5 DEG C is the 3rd temperature range； And/or first preset temperature corresponding with first temperature range is described less than corresponding with the second temperature section First preset temperature, first preset temperature corresponding with the second temperature section are less than and the 3rd temperature range pair First preset temperature answered, or first preset temperature corresponding with first temperature range are 1 DEG C, with described the First preset temperature corresponding to two temperature ranges is 2 DEG C, the corresponding with the 3rd temperature range described first default temperature Spend for 3 DEG C.

In those technical schemes, preferably using 5 DEG C and minus 5 DEG C of lines of demarcation as three temperature ranges because, 5 DEG C with On, the temperature of outdoor environment is higher, therefore, in air conditioner defrost, is not easy the fluctuation for causing indoor temperature, thus only needs out The first heating element heater is opened, without by expansion valve, and outdoor environment is less than when being equal to 5 DEG C and being optionally greater than minus 5 DEG C, During air conditioner defrost, it can easily cause the fluctuation of indoor temperature, but fluctuation is unlikely to excessive, therefore it may only be necessary to reduce expansion valve Aperture, the first heating element heater is opened, to compensate indoor temperature, to prevent that fluctuations in indoor temperature is excessive, and in outdoor environment During less than minus 5 DEG C, illustrate that outdoor environment is especially low, therefore in air conditioner defrost, fluctuations in indoor temperature can be caused larger, because This, now can be by opening the first heating element heater, the second heating element heater, and reduces the opening and closing of expansion valve, so as to from multi-party Temperature in face of interior compensates, it is thus possible to further prevents that fluctuations in indoor temperature is excessive, further to shorten defrost week Phase, reduce air conditioner energy consumption.Meanwhile first preset temperature corresponding with first temperature range be less than or equal to it is described First preset temperature corresponding to second temperature section, first preset temperature corresponding with the second temperature section are small In first preset temperature corresponding equal to the 3rd temperature range, specifically, such as, with first temperature range Corresponding first preset temperature is 1 DEG C, and first preset temperature corresponding with the second temperature section is 2 DEG C, with First preset temperature corresponding to 3rd temperature range is 3 DEG C, so when the temperature of outdoor environment is lower, more can Temperature-compensating measure is taken in advance, to slow down frosting velocity earlier, and then just can preferably shorten the defrost cycle, and more preferably Ground prevents that fluctuations in indoor temperature is excessive.

In any of the above-described technical scheme, it is preferable that found out and the outdoor ring according to the temperature T of the outdoor environment The second corresponding preset temperature of temperature range residing for the temperature in border；Record air conditioner institute at the end of first time defrost The temperature T2 of coil pipe is stated, when T-T2 is more than the second preset temperature, closes first heating element heater, closes second heating Element, by the aperture regulation of the expansion valve to original state.

, can be after air conditioner unlatching, at the end of first time defrost, by the thermograph of coil pipe in those technical schemes The temperature T2 of coil pipe at the end of for first time defrost, specifically, it can confirm as defrost when compressor stops and terminate, certainly, It can confirm as defrost when four-way valve switches to heating mode from refrigeration defrost pattern and terminate, and the temperature of now coil pipe is remembered Record as T2.Meanwhile the range lookup that can shift to an earlier date according to where the temperature of outdoor environment goes out corresponding second preset temperature, so, When the temperature T and T2 of coil pipe difference are more than the second preset temperature, that is, illustrate that the temperature T of coil pipe has begun to increase, and Through terminating temperature during defrost for the first time higher than air conditioner, so as to illustrate, the frost on outdoor heat exchanger has been changed clean , otherwise, temperature T can not possibly be more than T2, therefore can close the first heating element heater and the second heating element heater, and by expansion valve Aperture regulation is to normal aperture, so that the first heating element heater and the second heating element heater can stop heating, so as to save Energy consumption, while enable air conditioner to start normally to heat.

In any of the above-described technical scheme, it is preferable that second preset temperature is more than or equal to 3 DEG C and is less than or equal to 5 DEG C.

In those technical schemes, it can will determine that air conditioner is arranged to 3 DEG C minus 5 DEG C close to the temperature threshold for terminating defrost, Air conditioner so enable after defrost temperature is terminated more than air conditioner, and after the temperature of coil pipe has been gone up, end temp Compensation, to ensure that white certainization is over, and then can prevent from white not changing clean situation generation.

In any of the above-described technical scheme, it is preferable that record the temperature of air conditioner coil pipe in first time frosting Spend T1 the step of be specially：In a heating mode, the temperature of outdoor environment is detected, and in the temperature for detecting the outdoor environment During less than or equal to three preset temperatures, the temperature of the coil pipe is detected once every prefixed time interval a, and ith is detected The thermograph of the coil pipe be Ti, and when the number i of detection is more than b, judge T_i+b-T_iWhether T is less than_i-T_i-b, and T_i+b- Ti ＜ T_i-T_i-bWhen, by T_iThermograph coil pipe when being first time frosting temperature T1；Wherein, between preset time It it is minute every a unit, a is positive number, and i is the integer more than or equal to 1, and b is the natural number more than or equal to 2.

In those technical schemes, the temperature of coil pipe several times can be detected more, and after air conditioner frosting, the temperature of air conditioner Can be more and more lower, and temperature can low increasingly sooner, therefore, T_i+b- Ti and T_i-T_i-b, value be negative value, and T_i+b- Ti ＜ T_i- T_i-bRate of temperature change after illustrating in first section of Fixed Time Interval will than the temperature change in the last period Fixed Time Interval Greatly, i.e., temperature decline it is increasingly faster, therefore, you can illustrate, therefore air conditioner, just can be examined this in beginning frosting The thermograph of the coil pipe of survey is the temperature T1 of air conditioner first time frosting, so subsequently just can rapidly judged by T1 Whether air conditioner closes on frosting temperature, and can be taken appropriate measures when air conditioner closes on frosting temperature, to slow down frost Condense, and then the defrost cycle can be shortened, to prevent that fluctuations in indoor temperature is excessive.

Second aspect of the present invention embodiment provides a kind of control device of air conditioner, for air conditioner, the air conditioner Including outdoor heat exchanger and indoor heat exchanger, and the expansion valve being arranged between the outdoor heat exchanger and indoor heat exchanger, The outdoor heat exchanger includes coil pipe, and the first heating element heater is provided with the coil pipe, wherein, the control device of the air conditioner Including：Recording unit, for recording the temperature T1 of air conditioner coil pipe in first time frosting；Detection unit, it is used for The temperature of outdoor environment is detected, and for detecting the temperature of the coil pipe；Control unit, for being examined according to the detection unit The temperature lookup of the outdoor environment of survey go out the preset strategy corresponding with the temperature range residing for the temperature of the outdoor environment and First preset temperature；Described control unit is additionally operable to terminate defrost for the first time in the air conditioner, and the air conditioner switches to After heating mode, the detection unit is controlled to detect the temperature T of the coil pipe, and be less than or equal to find out in T-T1 described the During one preset temperature, the aperture of the expansion valve and first heating element heater are controlled according to the preset strategy that finds out Opening and closing.

The control device of the air conditioner provided according to an embodiment of the invention, first the temperature of outdoor environment can be divided into more Individual section, and to the first preset temperature corresponding to each section one preset strategy of special setting and one, hereafter, just can After air conditioner starting up, during by air conditioner first time frosting, the temperature T1 of coil pipe is recorded, specifically, can be according to disk The rate of change of the temperature of pipe determines the timing node of air conditioner frosting, meanwhile, it can set one in the coil pipe of outdoor heat exchanger Individual first heating element heater, so as in the follow-up heating operation of air conditioner, can first detect the temperature of outdoor environment, and according to outdoor ring The temperature in border, the temperature range residing for the temperature of outdoor environment is found out, and find out the correspondence where the temperature of outdoor environment The preset strategy in section and the first preset temperature, the temperature for the coil pipe that then can constantly or discontinuously detect, and in detection When the temperature T of coil pipe and the temperature T1 during air conditioner first time frosting difference are less than or equal to the first preset temperature, that is, During temperature T1 during the very close air conditioner first time frosting of the temperature T of coil pipe, according to the preset strategy control first found out Heating element heater is opened, and/or the aperture of expansion valve is tuned up, and this kind is arranged on the very close air-conditionings of temperature T of the coil pipe of detection During temperature T1 during device first time frosting, that is, illustrate air conditioner soon frosting, therefore on the one hand can open the first heating element heater Carry out heating coil, so as to slow down frosting velocity, on the other hand can reduce the aperture of expansion valve, so as to slow down refrigerant Circulation rate, so that indoor heat exchanger can absorb more heats from refrigerant, to improve the utilization rate of heat, so as to Shorten the defrost cycle, reduce the temperature fluctuation of interior, to realize lasting heating, and then just can improve Consumer's Experience.

In addition, the control device of the air conditioner provided according to the above embodiment of the present invention also has following supplementary technology special Sign：

In the above-mentioned technical solutions, it is preferable that the temperature range includes the first temperature range and second temperature section, and The temperature of first temperature range is more than the temperature in the second temperature section；Wherein, it is corresponding with first temperature range The preset strategy be：Reduce the aperture of the expansion valve, the preset strategy corresponding with the second temperature section is： Reduce the aperture of the expansion valve, open first heating element heater.

In those technical schemes, the temperature of outdoor environment can be divided into two sections, Temperature range more than 5 DEG C is the first temperature range, and the temperature range less than or equal to 5 DEG C is second temperature section, is so existed When the temperature of outdoor environment is located at the first temperature range, illustrate that the temperature of outdoor environment is higher, therefore, indoor heating needs are not Greatly, therefore in air conditioner frosting, hardly cause the temperature fluctuation of interior, thus the first heating element heater need not be opened Heating coil, and only need to reduce the aperture of expansion valve to carry out certain compensation to the temperature of interior, now, by Do not opened in the first heating element heater, thus can save the energy, can prevent that fluctuations in indoor temperature is excessive again.And in outdoor ring When the temperature in border is located at second temperature section, illustrate that the temperature of outdoor environment is relatively low, therefore, indoor heating needs are relatively Greatly, therefore in air conditioner frosting, the temperature fluctuation of interior can be caused larger, thus on the one hand can be by expansion valve come to interior Temperature compensate, the first heating element heats coil pipe on the other hand can be opened, to slow down frosting velocity.This kind is set can root Two kinds of different measures are taken according to the temperature of outdoor environment, it is thus possible to which rationally corresponding place is taken according to the temperature of outdoor environment Reason strategy, so as to can prevent fluctuations in indoor temperature, and can enough accelerates defrost speed, shortens the defrost cycle, reduces product energy Consumption.

In any of the above-described technical scheme, it is preferable that the temperature range more than 5 DEG C is the first temperature range, less than or equal to 5 DEG C temperature be second temperature section；And/or first preset temperature corresponding with first temperature range is less than and institute State first preset temperature corresponding to second temperature section, or the corresponding with first temperature range described first default temperature Spend for 1 DEG C, first preset temperature corresponding with the second temperature section is 2 DEG C.

In those technical schemes, preferably using 5 DEG C of lines of demarcation as two temperature ranges, because, it is more than 5 DEG C, outdoor The temperature of environment is higher, therefore, in air conditioner defrost, is not easy the fluctuation for causing indoor temperature, thus only needs unlatching first Heating element heater, without by expansion valve, and when outdoor environment is less than 5 DEG C, in air conditioner defrost, easily cause interior The fluctuation of temperature, therefore, the first heating element heater is merely opened, can not compensate the fluctuation of indoor environment, therefore, reduced While the aperture of expansion valve, it is also necessary to the first heating element heater is opened, with heating coil, so as to be carried out to the temperature of interior Bidirectional compensating, and then can prevent that fluctuations in indoor temperature is larger.Meanwhile corresponding with the first temperature range the first preset temperature is small In the first preset temperature corresponding equal to second temperature section, specifically, such as, corresponding with the first temperature range first is pre- If temperature is 1 DEG C, the first preset temperature corresponding with second temperature section is 2 DEG C, so when the temperature of outdoor environment is lower, Temperature-compensating measure can be more taken in advance, to slow down frosting velocity earlier, and then just can preferably shorten the defrost cycle, And it is excessive to be better protected from fluctuations in indoor temperature.

In any of the above-described technical scheme, it is preferable that the recording unit is additionally operable to record the air conditioner for the first time The temperature T2 of the coil pipe of the detection unit detection at the end of defrost；Described control unit is additionally operable to according to the outdoor ring The temperature T in border finds out second preset temperature corresponding with the temperature range residing for the temperature of the outdoor environment, and in T- When T2 is more than the second preset temperature, first heating element heater is closed, by the aperture regulation of the expansion valve to original state.

, can be after air conditioner unlatching, at the end of first time defrost, by the thermograph of coil pipe in those technical schemes The temperature T2 of coil pipe at the end of for first time defrost, specifically, it can confirm as defrost when compressor stops and terminate, certainly, It can confirm as defrost when four-way valve switches to heating mode from refrigeration defrost pattern and terminate, and the temperature of now coil pipe is remembered Record as T2.Meanwhile the range lookup that can shift to an earlier date according to where the temperature of outdoor environment goes out corresponding second preset temperature, so, When the temperature T and T2 of coil pipe difference are more than the second preset temperature, that is, illustrate that the temperature T of coil pipe has begun to increase, and Through terminating temperature during defrost for the first time higher than air conditioner, so as to illustrate, the frost on outdoor heat exchanger has been changed clean , otherwise, temperature T can not possibly be more than T2, therefore can close the first heating element heater, and by the aperture regulation of expansion valve to normally Aperture so that the first heating element heater can stop heating, to save energy consumption, and air conditioner can be enable to start normally to make Heat.

In any of the above-described technical scheme, it is preferable that the air conditioner also includes the be arranged in air conditioner room unit Two heating element heaters, described control unit are additionally operable to when T-T1 is less than or equal to first preset temperature found out, according to looking into The preset strategy found out controls the opening and closing of second heating element heater.

In those technical schemes, when being additionally provided with the second heating element heater in the air conditioner room unit of air conditioner, work as disk The temperature of pipe close to air conditioner frosting temperature when, can also according to preset strategy control the second heating element heater opening and closing, so as to energy Enough environment temperatures according to outdoor determine the need for opening the second heating element heater, so as to extremely low in outdoor environment temperature When, the second heating element heater is opened, further to be compensated to indoor temperature, to prevent indoor temperature undue fluctuation.

In any of the above-described technical scheme, it is preferable that the temperature range includes the first temperature range, second temperature section With the 3rd temperature range, and the temperature of first temperature range be more than the second temperature section temperature, it is described second temperature The temperature for spending section is more than the temperature of the 3rd temperature range；Wherein, it is corresponding with first temperature range described default Strategy is：Reduce the aperture of the expansion valve, the preset strategy corresponding with the second temperature section is：Reduce described swollen The aperture of swollen valve, opens the first heating element heater, and the preset strategy corresponding with the 3rd temperature range is：Reduce described swollen The aperture of swollen valve, the first heating element heater is opened, open the second heating element heater.

In those technical schemes, the temperature of outdoor environment can be divided into three sections, DEG C it is boundary, the temperature range more than 5 DEG C is the first temperature range, and the temperature ranges more than or equal to minus 5 DEG C less than or equal to 5 DEG C are Second temperature section, it is the 3rd temperature range less than minus 5 DEG C of small temperature ranges, is so located at first in the temperature of outdoor environment During temperature range, illustrate that the temperature of outdoor environment is higher, therefore, indoor heating needs are little, therefore in air conditioner frosting, Hardly cause the temperature fluctuation of interior, thus the first heating element heater need not be opened and carry out heating coil, and only need to reduce Once the aperture of expansion valve is to carry out certain compensation to the temperature of interior, now, because the first heating element heater is not opened Open, thus can save the energy, can prevent that fluctuations in indoor temperature is excessive again.And the temperature in outdoor environment is located at second temperature During section, illustrate the temperature of outdoor environment than relatively low, therefore, indoor heating needs are bigger, therefore in air conditioner frosting, The temperature of interior can be caused there is certain fluctuation, thus on the one hand the temperature of interior can be compensated by expansion valve, On the other hand the first heating element heats coil pipe can be opened, to slow down frosting velocity, simultaneously as the temperature of outdoor environment is also not It is especially low, therefore has been able to ensure that the temperature fluctuation of interior is little by the compensation of the first heating element heater and expansion valve, because This, it is not necessary that the second heating element heater is opened, and then just can save energy consumption, and the temperature in outdoor environment is located at the 3rd temperature During section, then illustrate that outdoor environment temperature is too low, therefore, rely only on expansion valve and the first heating element heater, at all can not compensated chamber The fluctuation of interior temperature, therefore, now, the second heating element heater can be opened, further to be compensated to the temperature of interior, to prevent Fluctuations in indoor temperature is excessive.This kind is set can take three kinds of different measures according to the temperature of outdoor environment, it is thus possible to according to The temperature of outdoor environment takes rationally corresponding processing strategy, so as to prevent fluctuations in indoor temperature, and can enough quickenings White speed, shorten the defrost cycle, reduce product energy consumption.

In any of the above-described technical scheme, it is preferable that the temperature range more than 5 DEG C is the first temperature range, is more than or equal to The minus 5 DEG C temperature ranges less than or equal to 5 DEG C are second temperature section, and the temperature range less than minus 5 DEG C is the 3rd temperature range； And/or first preset temperature corresponding with first temperature range is described less than corresponding with the second temperature section First preset temperature, first preset temperature corresponding with the second temperature section are less than and the 3rd temperature range pair First preset temperature answered, or first preset temperature corresponding with first temperature range are 1 DEG C, with described the First preset temperature corresponding to two temperature ranges is 2 DEG C, the corresponding with the 3rd temperature range described first default temperature Spend for 3 DEG C.

In those technical schemes, preferably using 5 DEG C and minus 5 DEG C of lines of demarcation as three temperature ranges because, 5 DEG C with On, the temperature of outdoor environment is higher, therefore, in air conditioner defrost, is not easy the fluctuation for causing indoor temperature, thus only needs out The first heating element heater is opened, without by expansion valve, and outdoor environment is less than when being equal to 5 DEG C and being optionally greater than minus 5 DEG C, During air conditioner defrost, it can easily cause the fluctuation of indoor temperature, but fluctuation is unlikely to excessive, therefore it may only be necessary to reduce expansion valve Aperture, the first heating element heater is opened, to compensate indoor temperature, to prevent that fluctuations in indoor temperature is excessive, and in outdoor environment During less than minus 5 DEG C, illustrate that outdoor environment is especially low, therefore in air conditioner defrost, fluctuations in indoor temperature can be caused larger, because This, now can be by opening the first heating element heater, the second heating element heater, and reduces the opening and closing of expansion valve, so as to from multi-party Temperature in face of interior compensates, it is thus possible to further prevents that fluctuations in indoor temperature is excessive, further to shorten defrost week Phase, reduce air conditioner energy consumption.Meanwhile first preset temperature corresponding with first temperature range be less than or equal to it is described First preset temperature corresponding to second temperature section, first preset temperature corresponding with the second temperature section are small In first preset temperature corresponding equal to the 3rd temperature range, specifically, such as, with first temperature range Corresponding first preset temperature is 1 DEG C, and first preset temperature corresponding with the second temperature section is 2 DEG C, with First preset temperature corresponding to 3rd temperature range is 3 DEG C, so when the temperature of outdoor environment is lower, more can Temperature-compensating measure is taken in advance, to slow down frosting velocity earlier, and then just can preferably shorten the defrost cycle, and more preferably Ground prevents that fluctuations in indoor temperature is excessive.

In any of the above-described technical scheme, it is preferable that the recording unit is additionally operable to record the air conditioner for the first time The temperature T2 of the coil pipe of the detection unit detection at the end of defrost；Described control unit is additionally operable to according to the outdoor ring The temperature T in border finds out second preset temperature corresponding with the temperature range residing for the temperature of the outdoor environment, and in T- When T2 is more than the second preset temperature, first heating element heater is closed, second heating element heater is closed, by the expansion valve Aperture regulation is to original state.

, can be after air conditioner unlatching, at the end of first time defrost, by the thermograph of coil pipe in those technical schemes The temperature T2 of coil pipe at the end of for first time defrost, specifically, it can confirm as defrost when compressor stops and terminate, certainly, It can confirm as defrost when four-way valve switches to heating mode from refrigeration defrost pattern and terminate, and the temperature of now coil pipe is remembered Record as T2.Meanwhile the range lookup that can shift to an earlier date according to where the temperature of outdoor environment goes out corresponding second preset temperature, so, When the temperature T and T2 of coil pipe difference are more than the second preset temperature, that is, illustrate that the temperature T of coil pipe has begun to increase, and Through terminating temperature during defrost for the first time higher than air conditioner, so as to illustrate, the frost on outdoor heat exchanger has been changed clean , otherwise, temperature T can not possibly be more than T2, therefore can close the first heating element heater and the second heating element heater, and by expansion valve Aperture regulation is to normal aperture, so that the first heating element heater and the second heating element heater can stop heating, so as to save Energy consumption, while enable air conditioner to start normally to heat.

In any of the above-described technical scheme, it is preferable that second preset temperature is more than or equal to 3 DEG C and is less than or equal to 5 DEG C.

In those technical schemes, it can will determine that air conditioner is arranged to 3 DEG C minus 5 DEG C close to the temperature threshold for terminating defrost, Air conditioner so enable after defrost temperature is terminated more than air conditioner, and after the temperature of coil pipe has been gone up, end temp Compensation, to ensure that white certainization is over, and then can prevent from white not changing clean situation generation.

In any of the above-described technical scheme, it is preferable that described control unit is additionally operable to described control unit and is additionally operable to making Under heat pattern, the temperature of the detection unit detection outdoor environment is controlled, and in the outdoor that the detection unit detects When the temperature of environment is less than or equal to three preset temperatures, the detection unit is controlled to detect once institute every prefixed time interval a The temperature of coil pipe is stated, and is Ti by the thermograph of the coil pipe of ith detection, and when the number i of detection is more than b, is sentenced Disconnected T_i+b-T_iWhether T is less than_i-T_i-b, and in T_i+b- Ti ＜ T_i-T_i-bWhen, by T_iThermograph disk when being first time frosting The temperature T1 of pipe；Wherein, prefixed time interval a unit is minute, and a is positive number, and i is the integer more than or equal to 1, and b is big In the natural number equal to 2.

In those technical schemes, the temperature of coil pipe several times can be detected more, and after air conditioner frosting, the temperature of air conditioner Can be more and more lower, and temperature can low increasingly sooner, therefore, T_i+b- Ti and T_i-T_I-b,Value be negative value, and T_i+b- Ti ＜ T_i- T_i-bRate of temperature change after illustrating in first section of Fixed Time Interval will than the temperature change in the last period Fixed Time Interval Greatly, i.e., temperature decline it is increasingly faster, therefore, you can illustrate, therefore air conditioner, just can be examined this in beginning frosting The thermograph of the coil pipe of survey is the temperature T1 of air conditioner first time frosting, so subsequently just can rapidly judged by T1 Whether air conditioner closes on frosting temperature, and can be taken appropriate measures when air conditioner closes on frosting temperature, to slow down frost Condense, and then the defrost cycle can be shortened, to prevent that fluctuations in indoor temperature is excessive.

The embodiment of third aspect present invention provides a kind of air conditioner, and the air conditioner includes：Indoor heat exchanger；It is outdoor Heat exchanger, it is connected by expansion valve with the indoor heat exchanger, the outdoor heat exchanger includes coil pipe；Heating component, it is arranged on In the coil pipe, the heating component includes installation housing and the first heating element heater being arranged in the mounting shell body；With The control device for the air conditioner that any one of two aspects embodiment provides.

The air conditioner that the embodiment of third aspect present invention provides, including outdoor heat exchanger, indoor heat exchanger and be arranged on Expansion valve between outdoor heat exchanger and indoor heat exchanger and the heating component in the coil pipe of heat exchanger installed outdoors, and The control device for the air conditioner that any one of second aspect embodiment provides, therefore, there is any one of second aspect embodiment to provide Air conditioner control device beneficial effect, will not be repeated here.

In the above-mentioned technical solutions, it is preferable that the installation housing is installing pipe, and the installing pipe is arranged in coil pipe.

In those technical schemes, installation housing is preferably arranged to installing pipe, so that installing pipe and coil pipe being capable of groups Packaged tube, in order to install the installation of housing, meanwhile, this kind, which is set, can also be arranged on conventional heating tube in installing pipe, with Used as heating element heater.Meanwhile this kind of heating component is relatively common, thus be easy to purchase, so as to reduce product into This.

In the above-mentioned technical solutions, it is preferable that the installation housing is U-shaped installing pipe, and the coil pipe is multiple U-tube phases The coiled pipe being connected into is interconnected, the U-shaped installing pipe is arranged in a U-tube.

In those technical schemes, coil pipe is preferably arranged to the coiled pipe that multiple U-tubes are interconnected to, because this Kind coil pipe is relatively common, and is frequently used for outdoor heat exchanger, thus is easy to purchase, now, can so as to reduce production cost It is preferred that installation housing is arranged to U-shaped installing pipe, so that the shape of coil pipe and installation housing can be mutually adapted, so as to make The structure of product is more rationally compact.Meanwhile installing pipe is U-shaped installing pipe, also increases area of dissipation, so as to add heating The efficiency of heating surface of component.

Wherein it is preferred to which the installation housing is installing pipe, the coil pipe is coiled pipe, and the installing pipe is arranged on institute State the bottom of coiled pipe.

In the above-mentioned technical solutions, it is preferable that the air conditioner also includes：At least one support member, it is arranged on the disk In pipe, for heating component support to be arranged in the coil pipe.

In those technical schemes, air conditioner also includes support member, specifically, supports heating component using support member In coil pipe, this kind, which is set, to realize location and installation of the heating component in coil pipe using support member, specifically, can Realize that heating component is installed in disk inner axial tube and radial positioning.Wherein it is preferred to the installing pipe is arranged on the coiled pipe A certain section of middle part.

Wherein it is preferred to which support member is support ring, and the quantity of the support member is multiple.

In the above-mentioned technical solutions, it is preferable that the air conditioner also includes：Air conditioner room unit, in the air conditioner chamber The second heating element heater, the indoor heat exchanger and described control unit are provided with machine；Air-conditioner outdoor unit, the air conditioner chamber Outer machine includes the outdoor heat exchanger and first heating component.

In those technical schemes, using the first heating element heats coil pipe in outdoor heat exchanger, so as to contract The short defrost cycle, meanwhile, second heating element heater can be set in air conditioner room unit, so as to utilize the second heating unit Part is additionally provided heat in air conditioner heat-production deficiency to interior, to make up the heating defect of air conditioner.

Wherein it is preferred to air conditioner is integral type air conditioner, for example, window air conditioner, now, air conditioner room unit and sky Device outdoor unit is adjusted to be integrated, or air conditioner is detachable air conditioner.

The additional aspect and advantage of the present invention will provide in following description section, will partly become from the following description Obtain substantially, or recognized by the practice of the present invention.

Brief description of the drawings

The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment Substantially and it is readily appreciated that, wherein：

Fig. 1 is the schematic flow sheet of the control method of the air conditioner provided according to an embodiment of the invention；

Fig. 2 is another schematic flow sheet of the control method of the air conditioner provided according to an embodiment of the invention；

Fig. 3 is the another schematic flow sheet of the control method of the air conditioner provided according to an embodiment of the invention；

Fig. 4 is the structural schematic block diagram of the control device of the air conditioner provided according to an embodiment of the invention；

Fig. 5 is the structural schematic block diagram of the air conditioner provided according to an embodiment of the invention；

Fig. 6 is a part of structural representation of the air conditioner provided according to an embodiment of the invention.

Embodiment

It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application Feature in example and embodiment can be mutually combined.

Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also By using other be different from it is described here in a manner of implement, therefore, protection scope of the present invention is not by following public tool The limitation of body embodiment.

The control method of air conditioner provided according to some embodiments of the invention is described referring to Fig. 1.

Specifically, as shown in figure 1, first aspect present invention embodiment provides a kind of control method of air conditioner, it is used for Air conditioner as shown in Figure 5 and Figure 6, air conditioner includes outdoor heat exchanger and indoor heat exchanger, and is disposed in the outdoor heat exchanger Expansion valve between indoor heat exchanger, outdoor heat exchanger include coil pipe, the first heating element heater are provided with coil pipe, wherein, it is empty Adjusting the control method of device includes：Step 102, the temperature T1 of air conditioner coil pipe in first time frosting is recorded；Step 104, detect The temperature of outdoor environment, and the temperature range according to residing for going out with the temperature of outdoor environment the temperature lookup of outdoor environment is corresponding Preset strategy and the first preset temperature；Step 106, defrost is terminated for the first time in air conditioner, and air conditioner switches to heating mould After formula, the temperature T of coil pipe is detected, and when T-T1 is less than or equal to the first preset temperature found out, it is default according to what is found out The opening and closing of the aperture of policy control expansion valve and the first heating element heater.

The control method of the air conditioner provided according to an embodiment of the invention, first the temperature of outdoor environment can be divided into more Individual section, and to the first preset temperature corresponding to each section one preset strategy of special setting and one, hereafter, just can After air conditioner starting up, during by air conditioner first time frosting, the temperature T1 of coil pipe is recorded, specifically, can be according to disk The rate of change of the temperature of pipe determines the timing node of air conditioner frosting, meanwhile, it can set one in the coil pipe of outdoor heat exchanger Individual first heating element heater, so as in the follow-up heating operation of air conditioner, can first detect the temperature of outdoor environment, and according to outdoor ring The temperature in border, the temperature range residing for the temperature of outdoor environment is found out, and find out the correspondence where the temperature of outdoor environment The preset strategy in section and the first preset temperature, the temperature for the coil pipe that then can constantly or discontinuously detect, and in detection When the temperature T of coil pipe and the temperature T1 during air conditioner first time frosting difference are less than or equal to the first preset temperature, that is, During temperature T1 during the very close air conditioner first time frosting of the temperature T of coil pipe, according to the preset strategy control first found out Heating element heater is opened, and/or the aperture of expansion valve is tuned up, and this kind is arranged on the very close air-conditionings of temperature T of the coil pipe of detection During temperature T1 during device first time frosting, that is, illustrate air conditioner soon frosting, therefore on the one hand can open the first heating element heater Carry out heating coil, so as to slow down frosting velocity, on the other hand can reduce the aperture of expansion valve, so as to slow down refrigerant Circulation rate, so that indoor heat exchanger can absorb more heats from refrigerant, to improve the utilization rate of heat, so as to Shorten the defrost cycle, reduce the temperature fluctuation of interior, to realize lasting heating, and then just can improve Consumer's Experience.

In the above embodiment, it is preferable that temperature range includes the first temperature range and second temperature section, and the first temperature The temperature for spending section is more than the temperature in second temperature section；Wherein, preset strategy corresponding with the first temperature range is：Reduce swollen The aperture of swollen valve, preset strategy corresponding with second temperature section are：Reduce the aperture of expansion valve, open the first heating element heater.

In those embodiments, the temperature of outdoor environment can be divided into two sections, greatly It is the first temperature range in 5 DEG C of temperature ranges, and is second temperature section less than or equal to 5 DEG C of temperature range, so in room When the temperature of external environment is located at the first temperature range, illustrate that the temperature of outdoor environment is higher, therefore, indoor heating needs are not Greatly, therefore in air conditioner frosting, hardly cause the temperature fluctuation of interior, thus the first heating element heater need not be opened Heating coil, and only need to reduce the aperture of expansion valve to carry out certain compensation to the temperature of interior, now, by Do not opened in the first heating element heater, thus can save the energy, can prevent that fluctuations in indoor temperature is excessive again.And in outdoor ring When the temperature in border is located at second temperature section, illustrate that the temperature of outdoor environment is relatively low, therefore, indoor heating needs are relatively Greatly, therefore in air conditioner frosting, the temperature fluctuation of interior can be caused larger, thus on the one hand can be by expansion valve come to interior Temperature compensate, the first heating element heats coil pipe on the other hand can be opened, to slow down frosting velocity.This kind is set can root Two kinds of different measures are taken according to the temperature of outdoor environment, it is thus possible to which rationally corresponding place is taken according to the temperature of outdoor environment Reason strategy, so as to can prevent fluctuations in indoor temperature, and can enough accelerates defrost speed, shortens the defrost cycle, reduces product energy Consumption.

In any of the above-described embodiment, it is preferable that the temperature range more than 5 DEG C is the first temperature range, less than or equal to 5 DEG C Temperature be second temperature section；And/or the first preset temperature corresponding with the first temperature range is less than and second temperature section Corresponding first preset temperature, or the first preset temperature corresponding with the first temperature range are 1 DEG C, corresponding with second temperature section The first preset temperature be 2 DEG C.

In those embodiments, preferably using 5 DEG C of lines of demarcation as two temperature ranges, because, more than 5 DEG C, outdoor ring The temperature in border is higher, therefore, in air conditioner defrost, is not easy the fluctuation for causing indoor temperature, thus only needs unlatching first to add Thermal element, without by expansion valve, and when outdoor environment is less than 5 DEG C, in air conditioner defrost, easily cause Indoor Temperature The fluctuation of degree, therefore, the first heating element heater is merely opened, can not compensate the fluctuation of indoor environment, it is therefore, swollen reducing While the aperture of swollen valve, it is also necessary to the first heating element heater is opened, with heating coil, so as to which the temperature progress to interior is double To compensation, and then it can prevent that fluctuations in indoor temperature is larger.Meanwhile the first preset temperature corresponding with the first temperature range is less than The first preset temperature corresponding equal to second temperature section, specifically, such as, corresponding with the first temperature range first is default Temperature is 1 DEG C, and the first preset temperature corresponding with second temperature section is 2 DEG C, so when the temperature of outdoor environment is lower, more Temperature-compensating measure can be taken in advance, to slow down frosting velocity earlier, and then just can preferably shorten the defrost cycle, and It is excessive to be better protected from fluctuations in indoor temperature.

The control method of air conditioner according to second embodiment of the invention offer is described referring to Fig. 2.

Specifically, as shown in Fig. 2 the control method for the air conditioner that second embodiment provides, comprises the following steps：

Step 202, the temperature T1 of air conditioner coil pipe in first time frosting is recorded.

Step 204, the temperature of outdoor environment is detected, and the temperature with outdoor environment is gone out according to the temperature lookup of outdoor environment The corresponding preset strategy of residing temperature range and the first preset temperature.

Step 206, terminate defrost for the first time in air conditioner, and after air conditioner switches to heating mode, detect the temperature of coil pipe T is spent, and when T-T1 is less than or equal to the first preset temperature found out, opening for expansion valve is controlled according to the preset strategy found out The opening and closing of degree and the first heating element heater.

Step 208, the temperature range according to residing for being found out with the temperature of outdoor environment the temperature T of outdoor environment is corresponding The second preset temperature.

Step 210, the temperature T2 of air conditioner coil pipe at the end of first time defrost is recorded, is more than the second default temperature in T-T2 When spending, the first heating element heater is closed, by the aperture regulation of expansion valve to original state.

In this embodiment, can be the by the thermograph of coil pipe after air conditioner unlatching, at the end of first time defrost The temperature T2 of coil pipe at the end of defrost, specifically, it can confirm as defrost when compressor stops and terminate, certainly, also can be Four-way valve from refrigeration defrost pattern switch to heating mode when, confirm as defrost and terminate, and be by the thermograph of now coil pipe T2.Meanwhile the range lookup that can shift to an earlier date according to where the temperature of outdoor environment goes out corresponding second preset temperature, so, works as disk When the temperature T and T2 of pipe difference are more than the second preset temperature, that is, illustrate that the temperature T of coil pipe has begun to increase, and it is high Temperature when air conditioner terminates defrost for the first time, so as to illustrate, the frost on outdoor heat exchanger has been changed totally, no Then, temperature T can not possibly be more than T2, therefore can close the first heating element heater, and by the aperture regulation of expansion valve to normally opening Degree, so that the first heating element heater can stop heating, to save energy consumption, and can enable air conditioner start normally to heat.

The control method of air conditioner according to third embodiment of the invention offer is described referring to Fig. 3.

Wherein, the control method for the air conditioner that 3rd embodiment provides, for being provided with second in air conditioner room unit The air conditioner of heating element heater, specifically, as shown in figure 3, the control method of air conditioner also includes：Comprise the following steps：

Step 302, the temperature T1 of air conditioner coil pipe in first time frosting is recorded.

Step 304, the temperature of outdoor environment is detected, and the temperature with outdoor environment is gone out according to the temperature lookup of outdoor environment The corresponding preset strategy of residing temperature range and the first preset temperature.

Step 306, terminate defrost for the first time in air conditioner, and after air conditioner switches to heating mode, detect the temperature of coil pipe T is spent, and when T-T1 is less than or equal to the first preset temperature found out, opening for expansion valve is controlled according to the preset strategy found out Degree and the opening and closing of the first heating element heater and the opening and closing of the second heating element heater.

Step 308, the temperature range according to residing for being found out with the temperature of outdoor environment the temperature T of outdoor environment is corresponding The second preset temperature.

Step 310, the temperature T2 of air conditioner coil pipe at the end of first time defrost is recorded, is more than the second default temperature in T-T2 When spending, the first heating element heater is closed, the second heating element heater is closed, by the aperture regulation of expansion valve to original state.

In this embodiment, when being additionally provided with the second heating element heater in the air conditioner room unit of air conditioner, when coil pipe Temperature close to air conditioner frosting temperature when, can also according to preset strategy control the second heating element heater opening and closing, so as to root Determine the need for opening the second heating element heater according to the environment temperature of outdoor, so as to when outdoor environment temperature is extremely low, open The second heating element heater is opened, further to be compensated to indoor temperature, to prevent indoor temperature undue fluctuation.Meanwhile the implementation Example can air conditioner unlatching after, at the end of first time defrost, by the thermograph of coil pipe be first time defrost at the end of coil pipe Temperature T2, specifically, can confirm as defrost when compressor stops and terminate, certainly, also can four-way valve from refrigeration defrost mould When formula switches to heating mode, confirm as defrost and terminate, and be T2 by the thermograph of now coil pipe.Meanwhile basis can be shifted to an earlier date Range lookup where the temperature of outdoor environment goes out corresponding second preset temperature, so, when the temperature T and T2 of coil pipe difference are big When the second preset temperature, that is, illustrate that the temperature T of coil pipe has begun to increase, and be already higher than air conditioner end for the first time Temperature when white, so as to illustrate, the frost on outdoor heat exchanger has been changed totally, and otherwise, temperature T can not possibly be more than T2, therefore the first heating element heater and the second heating element heater can be closed, and by the aperture regulation of expansion valve to normal aperture, with Enable the first heating element heater and the second heating element heater to stop heating, so as to save energy consumption, while enable air conditioner Start normal heating.

In any of the above-described embodiment, it is preferable that temperature range includes the first temperature range, second temperature section and the 3rd Temperature range, and the temperature of the first temperature range is more than the temperature in second temperature section, the temperature in second temperature section are more than the The temperature of three temperature ranges；Wherein, preset strategy corresponding with the first temperature range is：Reduce the aperture of expansion valve, with second Preset strategy is corresponding to temperature range：Reduce the aperture of expansion valve, open the first heating element heater, it is corresponding with the 3rd temperature range Preset strategy be：Reduce the aperture of expansion valve, open the first heating element heater, open the second heating element heater.

In those embodiments, the temperature of outdoor environment can be divided into three sections, For boundary, the temperature range more than 5 DEG C is the first temperature range, and the temperature ranges more than or equal to minus 5 DEG C less than or equal to 5 DEG C are the Two temperature ranges, it is the 3rd temperature range less than minus 5 DEG C of small temperature ranges, it is so warm positioned at first in the temperature of outdoor environment When spending section, illustrate that the temperature of outdoor environment is higher, therefore, indoor heating needs are little, therefore in air conditioner frosting, it is several The temperature fluctuation of interior will not be caused, thus the first heating element heater need not be opened and carry out heating coil, and only need reduction one The aperture of lower expansion valve is to carry out certain compensation to the temperature of interior, now, because the first heating element heater is not opened, The energy thus can be saved, can prevent that fluctuations in indoor temperature is excessive again.And the temperature in outdoor environment is located at second temperature area Between when, illustrate the temperature of outdoor environment than relatively low, therefore, indoor heating needs are bigger, therefore in air conditioner frosting, meeting Cause the temperature of interior there is certain fluctuation, thus on the one hand the temperature of interior can be compensated by expansion valve, separately On the one hand the first heating element heats coil pipe can be opened, to slow down frosting velocity, simultaneously as the temperature of outdoor environment is not also It is especially low, therefore have been able to ensure that the temperature fluctuation of interior is little by the compensation of the first heating element heater and expansion valve, therefore, It is not necessary to open the second heating element heater, and then energy consumption just can be saved, and the temperature in outdoor environment is located at the 3rd humidity province Between when, then illustrate that outdoor environment temperature is too low, therefore, rely only on expansion valve and the first heating element heater, at all can not be in compensated chamber The fluctuation of temperature, therefore, now, the second heating element heater can be opened, further to be compensated to the temperature of interior, to prevent room Interior temperature fluctuation is excessive.This kind is set can take three kinds of different measures according to the temperature of outdoor environment, it is thus possible to according to room The temperature of external environment takes rationally corresponding processing strategy, and so as to prevent fluctuations in indoor temperature, and can enough accelerates defrost Speed, shorten the defrost cycle, reduce product energy consumption.

In any of the above-described embodiment, it is preferable that the temperature range more than 5 DEG C is the first temperature range, more than or equal to minus 5 DEG C it is second temperature section less than or equal to 5 DEG C of temperature range, the temperature range less than minus 5 DEG C is the 3rd temperature range；And/or The first preset temperature corresponding with the first temperature range is less than the first preset temperature corresponding with second temperature section, with the second temperature First preset temperature corresponding to degree section is less than the first preset temperature corresponding with the 3rd temperature range, or with the first temperature range Corresponding first preset temperature is 1 DEG C, and the first preset temperature corresponding with second temperature section is 2 DEG C, with the 3rd temperature range Corresponding first preset temperature is 3 DEG C.

In those embodiments, preferably using 5 DEG C and minus 5 DEG C of lines of demarcation as three temperature ranges, because, more than 5 DEG C, The temperature of outdoor environment is higher, therefore, in air conditioner defrost, is not easy the fluctuation for causing indoor temperature, thus only needs to open First heating element heater, without by expansion valve, and outdoor environment is less than when being equal to 5 DEG C and being optionally greater than minus 5 DEG C, in sky When adjusting device defrost, it can easily cause the fluctuation of indoor temperature, but fluctuation is unlikely to excessive, therefore it may only be necessary to reduce opening for expansion valve Degree, the first heating element heater is opened, to compensate indoor temperature, to prevent that fluctuations in indoor temperature is excessive, and it is low in outdoor environment When minus 5 DEG C, illustrate that outdoor environment is especially low, therefore in air conditioner defrost, fluctuations in indoor temperature can be caused larger, therefore, Now can be by opening the first heating element heater, the second heating element heater, and reduce the opening and closing of expansion valve, so as to right from many aspects Indoor temperature compensates, it is thus possible to further prevent that fluctuations in indoor temperature is excessive, further to shorten the defrost cycle, and drop Low air conditioner energy consumption.Meanwhile with the first temperature range corresponding to the first preset temperature be less than or equal to second temperature section it is corresponding The first preset temperature, the first preset temperature corresponding with second temperature section is less than or equal to corresponding with the 3rd temperature range the One preset temperature, specifically, such as, the first preset temperature corresponding with the first temperature range is 1 DEG C, with second temperature section pair The first preset temperature answered is 2 DEG C, and the first preset temperature corresponding with the 3rd temperature range is 3 DEG C, so in outdoor environment When temperature is lower, temperature-compensating measure can be more taken in advance, to slow down frosting velocity earlier, and then just can preferably be contracted The short defrost cycle, and it is excessive to be better protected from fluctuations in indoor temperature.

In any of the above-described embodiment, it is preferable that the second preset temperature is more than or equal to 3 DEG C and is less than or equal to 5 DEG C.

In those embodiments, it can will determine that air conditioner is arranged to 3 DEG C minus 5 DEG C close to the temperature threshold for terminating defrost, this After sample enables air conditioner after defrost temperature is terminated more than air conditioner, and the temperature of coil pipe has been gone up, end temp Compensation, to ensure that white certainization is over, and then it can prevent frost from not changing clean situation and occurring.

In any of the above-described embodiment, it is preferable that record air conditioner is in first time frosting the step of the temperature T1 of coil pipe Specially：In a heating mode, the temperature of outdoor environment is detected, and it is pre- less than or equal to the 3rd in the temperature for detecting outdoor environment If during temperature, the temperature of a coil pipe is detected every prefixed time interval a, and be by the thermograph of the coil pipe of ith detection Ti, and when the number i of detection is more than b, judge T_i+b-T_iWhether T is less than_i-T_i-b, and in T_i+b- Ti ＜ T_i-T_i-bWhen, by T_i's The temperature T1 of coil pipe when thermograph is first time frosting；Wherein, prefixed time interval a unit is minute, and a is positive number, and i For the integer more than or equal to 1, b is the natural number more than or equal to 2.

In those embodiments, the temperature of coil pipe several times can be detected more, and after air conditioner frosting, the temperature meeting of air conditioner It is more and more lower, and that temperature can be low is increasingly faster, therefore, T_i+b- Ti and T_i-T_I-b,Value be negative value, and T_i+b- Ti ＜ T_i- T_i-bRate of temperature change after illustrating in first section of Fixed Time Interval will than the temperature change in the last period Fixed Time Interval Greatly, i.e., temperature decline it is increasingly faster, therefore, you can illustrate, therefore air conditioner, just can be examined this in beginning frosting The thermograph of the coil pipe of survey is the temperature T1 of air conditioner first time frosting, so subsequently just can rapidly judged by T1 Whether air conditioner closes on frosting temperature, and can be taken appropriate measures when air conditioner closes on frosting temperature, to slow down frost Condense, and then the defrost cycle can be shortened, to prevent that fluctuations in indoor temperature is excessive.

The control device of air conditioner provided according to some embodiments of the invention is described referring to Fig. 4.

As shown in figure 4, second aspect of the present invention embodiment provides a kind of control device 400 of air conditioner, for air-conditioning Device, air conditioner includes outdoor heat exchanger and indoor heat exchanger, and is disposed in the outdoor swollen between heat exchanger and indoor heat exchanger Swollen valve, outdoor heat exchanger include coil pipe, the first heating element heater are provided with coil pipe, wherein, the control device 400 of air conditioner wraps Include：Recording unit 410, for recording the temperature T1 of air conditioner coil pipe in first time frosting；Detection unit 420, for detecting The temperature of outdoor environment, and for detecting the temperature of coil pipe；Control unit 430, for the room detected according to detection unit 420 The temperature lookup of external environment goes out the preset strategy corresponding with the temperature range residing for the temperature of outdoor environment and the first default temperature Degree；After control unit 430 is additionally operable to terminate defrost for the first time in air conditioner, and air conditioner switches to heating mode, control detection Unit 420 detects the temperature T of coil pipe, and when T-T1 is less than or equal to the first preset temperature found out, it is pre- according to what is found out If the opening and closing of the aperture of policy control expansion valve and the first heating element heater.

The control device of the air conditioner provided according to an embodiment of the invention, first the temperature of outdoor environment can be divided into more Individual section, and to the first preset temperature corresponding to each section one preset strategy of special setting and one, hereafter, just can After air conditioner starting up, during by air conditioner first time frosting, the temperature T1 of coil pipe is recorded, specifically, can be according to disk The rate of change of the temperature of pipe determines the timing node of air conditioner frosting, meanwhile, it can set one in the coil pipe of outdoor heat exchanger Individual first heating element heater, so as in the follow-up heating operation of air conditioner, can first detect the temperature of outdoor environment, and according to outdoor ring The temperature in border, the temperature range residing for the temperature of outdoor environment is found out, and find out the correspondence where the temperature of outdoor environment The preset strategy in section and the first preset temperature, the temperature for the coil pipe that then can constantly or discontinuously detect, and in detection When the temperature T of coil pipe and the temperature T1 during air conditioner first time frosting difference are less than or equal to the first preset temperature, that is, During temperature T1 during the very close air conditioner first time frosting of the temperature T of coil pipe, according to the preset strategy control first found out Heating element heater is opened, and/or the aperture of expansion valve is tuned up, and this kind is arranged on the very close air-conditionings of temperature T of the coil pipe of detection During temperature T1 during device first time frosting, that is, illustrate air conditioner soon frosting, therefore on the one hand can open the first heating element heater Carry out heating coil, so as to slow down frosting velocity, on the other hand can reduce the aperture of expansion valve, so as to slow down refrigerant Circulation rate, so that indoor heat exchanger can absorb more heats from refrigerant, to improve the utilization rate of heat, so as to Shorten the defrost cycle, reduce the temperature fluctuation of interior, to realize lasting heating, and then just can improve Consumer's Experience.

In the above embodiment, it is preferable that temperature range includes the first temperature range and second temperature section, and the first temperature The temperature for spending section is more than the temperature in second temperature section；Wherein, preset strategy corresponding with the first temperature range is：Reduce swollen The aperture of swollen valve, preset strategy corresponding with second temperature section are：Reduce the aperture of expansion valve, open the first heating element heater.

In those embodiments, the temperature of outdoor environment can be divided into two sections, greatly It is the first temperature range in 5 DEG C of temperature ranges, and is second temperature section less than or equal to 5 DEG C of temperature range, so in room When the temperature of external environment is located at the first temperature range, illustrate that the temperature of outdoor environment is higher, therefore, indoor heating needs are not Greatly, therefore in air conditioner frosting, hardly cause the temperature fluctuation of interior, thus the first heating element heater need not be opened Heating coil, and only need to reduce the aperture of expansion valve to carry out certain compensation to the temperature of interior, now, by Do not opened in the first heating element heater, thus can save the energy, can prevent that fluctuations in indoor temperature is excessive again.And in outdoor ring When the temperature in border is located at second temperature section, illustrate that the temperature of outdoor environment is relatively low, therefore, indoor heating needs are relatively Greatly, therefore in air conditioner frosting, the temperature fluctuation of interior can be caused larger, thus on the one hand can be by expansion valve come to interior Temperature compensate, the first heating element heats coil pipe on the other hand can be opened, to slow down frosting velocity.This kind is set can root Two kinds of different measures are taken according to the temperature of outdoor environment, it is thus possible to which rationally corresponding place is taken according to the temperature of outdoor environment Reason strategy, so as to can prevent fluctuations in indoor temperature, and can enough accelerates defrost speed, shortens the defrost cycle, reduces product energy Consumption.

In any of the above-described embodiment, it is preferable that the temperature range more than 5 DEG C is the first temperature range, less than or equal to 5 DEG C Temperature be second temperature section；And/or the first preset temperature corresponding with the first temperature range is less than and second temperature section Corresponding first preset temperature, or the first preset temperature corresponding with the first temperature range are 1 DEG C, corresponding with second temperature section The first preset temperature be 2 DEG C.

In those embodiments, preferably using 5 DEG C of lines of demarcation as two temperature ranges, because, more than 5 DEG C, outdoor ring The temperature in border is higher, therefore, in air conditioner defrost, is not easy the fluctuation for causing indoor temperature, thus only needs unlatching first to add Thermal element, without by expansion valve, and when outdoor environment is less than 5 DEG C, in air conditioner defrost, easily cause Indoor Temperature The fluctuation of degree, therefore, the first heating element heater is merely opened, can not compensate the fluctuation of indoor environment, it is therefore, swollen reducing While the aperture of swollen valve, it is also necessary to the first heating element heater is opened, with heating coil, so as to which the temperature progress to interior is double To compensation, and then it can prevent that fluctuations in indoor temperature is larger.Meanwhile the first preset temperature corresponding with the first temperature range is less than The first preset temperature corresponding equal to second temperature section, specifically, such as, corresponding with the first temperature range first is default Temperature is 1 DEG C, and the first preset temperature corresponding with second temperature section is 2 DEG C, so when the temperature of outdoor environment is lower, more Temperature-compensating measure can be taken in advance, to slow down frosting velocity earlier, and then just can preferably shorten the defrost cycle, and It is excessive to be better protected from fluctuations in indoor temperature.

In any of the above-described embodiment, it is preferable that recording unit 410 is additionally operable to record air conditioner, and in first time, defrost terminates When detection unit 420 detect coil pipe temperature T2；Control unit 430 be additionally operable to according to the temperature T of outdoor environment find out with The second corresponding preset temperature of temperature range residing for the temperature of outdoor environment, and when T-T2 is more than the second preset temperature, The first heating element heater is closed, by the aperture regulation of expansion valve to original state.

In those embodiments, can at the end of first time defrost, be by the thermograph of coil pipe after air conditioner unlatching The temperature T2 of coil pipe at the end of first time defrost, specifically, it can confirm as defrost when compressor stops and terminate, certainly, also may be used When four-way valve switches to heating mode from refrigeration defrost pattern, confirm as defrost and terminate, and by the thermograph of now coil pipe For T2.Meanwhile the range lookup that can shift to an earlier date according to where the temperature of outdoor environment goes out corresponding second preset temperature, so, when When the temperature T and T2 of coil pipe difference are more than the second preset temperature, that is, illustrate that the temperature T of coil pipe has begun to increase, and Terminate temperature during defrost for the first time higher than air conditioner, so as to illustrate, the frost on outdoor heat exchanger has been changed totally, Otherwise, temperature T can not possibly be more than T2, therefore can close the first heating element heater, and by the aperture regulation of expansion valve to normally Aperture, so that the first heating element heater can stop heating, to save energy consumption, and air conditioner can be enable to start normally to make Heat.

In any of the above-described embodiment, it is preferable that air conditioner also includes the second heating being arranged in air conditioner room unit Element, control unit 430 are additionally operable to when T-T1 is less than or equal to the first preset temperature found out, according to the default plan found out Slightly control the opening and closing of the second heating element heater.

In those embodiments, when being additionally provided with the second heating element heater in the air conditioner room unit of air conditioner, work as coil pipe Temperature close to air conditioner frosting temperature when, can also according to preset strategy control the second heating element heater opening and closing, so as to Determined the need for opening the second heating element heater according to the environment temperature of outdoor, so as to when outdoor environment temperature is extremely low, The second heating element heater is opened, further to be compensated to indoor temperature, to prevent indoor temperature undue fluctuation.

In any of the above-described embodiment, it is preferable that temperature range includes the first temperature range, second temperature section and the 3rd Temperature range, and the temperature of the first temperature range is more than the temperature in second temperature section, the temperature in second temperature section are more than the The temperature of three temperature ranges；Wherein, preset strategy corresponding with the first temperature range is：Reduce the aperture of expansion valve, with second Preset strategy is corresponding to temperature range：Reduce the aperture of expansion valve, open the first heating element heater, it is corresponding with the 3rd temperature range Preset strategy be：Reduce the aperture of expansion valve, open the first heating element heater, open the second heating element heater.

In those embodiments, the temperature of outdoor environment can be divided into three sections, For boundary, the temperature range more than 5 DEG C is the first temperature range, and the temperature ranges more than or equal to minus 5 DEG C less than or equal to 5 DEG C are the Two temperature ranges, it is the 3rd temperature range less than minus 5 DEG C of small temperature ranges, it is so warm positioned at first in the temperature of outdoor environment When spending section, illustrate that the temperature of outdoor environment is higher, therefore, indoor heating needs are little, therefore in air conditioner frosting, it is several The temperature fluctuation of interior will not be caused, thus the first heating element heater need not be opened and carry out heating coil, and only need reduction one The aperture of lower expansion valve is to carry out certain compensation to the temperature of interior, now, because the first heating element heater is not opened, The energy thus can be saved, can prevent that fluctuations in indoor temperature is excessive again.And the temperature in outdoor environment is located at second temperature area Between when, illustrate the temperature of outdoor environment than relatively low, therefore, indoor heating needs are bigger, therefore in air conditioner frosting, meeting Cause the temperature of interior there is certain fluctuation, thus on the one hand the temperature of interior can be compensated by expansion valve, separately On the one hand the first heating element heats coil pipe can be opened, to slow down frosting velocity, simultaneously as the temperature of outdoor environment is not also It is especially low, therefore have been able to ensure that the temperature fluctuation of interior is little by the compensation of the first heating element heater and expansion valve, therefore, It is not necessary to open the second heating element heater, and then energy consumption just can be saved, and the temperature in outdoor environment is located at the 3rd humidity province Between when, then illustrate that outdoor environment temperature is too low, therefore, rely only on expansion valve and the first heating element heater, at all can not be in compensated chamber The fluctuation of temperature, therefore, now, the second heating element heater can be opened, further to be compensated to the temperature of interior, to prevent room Interior temperature fluctuation is excessive.This kind is set can take three kinds of different measures according to the temperature of outdoor environment, it is thus possible to according to room The temperature of external environment takes rationally corresponding processing strategy, and so as to prevent fluctuations in indoor temperature, and can enough accelerates defrost Speed, shorten the defrost cycle, reduce product energy consumption.

In any of the above-described embodiment, it is preferable that the temperature range more than 5 DEG C is the first temperature range, more than or equal to minus 5 DEG C it is second temperature section less than or equal to 5 DEG C of temperature range, the temperature range less than minus 5 DEG C is the 3rd temperature range；And/or The first preset temperature corresponding with the first temperature range is less than the first preset temperature corresponding with second temperature section, with the second temperature First preset temperature corresponding to degree section is less than the first preset temperature corresponding with the 3rd temperature range, or with the first temperature range Corresponding first preset temperature is 1 DEG C, and the first preset temperature corresponding with second temperature section is 2 DEG C, with the 3rd temperature range Corresponding first preset temperature is 3 DEG C.

In those embodiments, preferably using 5 DEG C and minus 5 DEG C of lines of demarcation as three temperature ranges, because, more than 5 DEG C, The temperature of outdoor environment is higher, therefore, in air conditioner defrost, is not easy the fluctuation for causing indoor temperature, thus only needs to open First heating element heater, without by expansion valve, and outdoor environment is less than when being equal to 5 DEG C and being optionally greater than minus 5 DEG C, in sky When adjusting device defrost, it can easily cause the fluctuation of indoor temperature, but fluctuation is unlikely to excessive, therefore it may only be necessary to reduce opening for expansion valve Degree, the first heating element heater is opened, to compensate indoor temperature, to prevent that fluctuations in indoor temperature is excessive, and it is low in outdoor environment When minus 5 DEG C, illustrate that outdoor environment is especially low, therefore in air conditioner defrost, fluctuations in indoor temperature can be caused larger, therefore, Now can be by opening the first heating element heater, the second heating element heater, and reduce the opening and closing of expansion valve, so as to right from many aspects Indoor temperature compensates, it is thus possible to further prevent that fluctuations in indoor temperature is excessive, further to shorten the defrost cycle, and drop Low air conditioner energy consumption.Meanwhile with the first temperature range corresponding to the first preset temperature be less than or equal to second temperature section it is corresponding The first preset temperature, the first preset temperature corresponding with second temperature section is less than or equal to corresponding with the 3rd temperature range the One preset temperature, specifically, such as, the first preset temperature corresponding with the first temperature range is 1 DEG C, with second temperature section pair The first preset temperature answered is 2 DEG C, and the first preset temperature corresponding with the 3rd temperature range is 3 DEG C, so in outdoor environment When temperature is lower, temperature-compensating measure can be more taken in advance, to slow down frosting velocity earlier, and then just can preferably be contracted The short defrost cycle, and it is excessive to be better protected from fluctuations in indoor temperature.

In any of the above-described embodiment, it is preferable that recording unit 410 is additionally operable to record air conditioner, and in first time, defrost terminates When detection unit 420 detect coil pipe temperature T2；Control unit 430 be additionally operable to according to the temperature T of outdoor environment find out with The second corresponding preset temperature of temperature range residing for the temperature of outdoor environment, and when T-T2 is more than the second preset temperature, The first heating element heater is closed, the second heating element heater is closed, by the aperture regulation of expansion valve to original state.

In those embodiments, can at the end of first time defrost, be by the thermograph of coil pipe after air conditioner unlatching The temperature T2 of coil pipe at the end of first time defrost, specifically, it can confirm as defrost when compressor stops and terminate, certainly, also may be used When four-way valve switches to heating mode from refrigeration defrost pattern, confirm as defrost and terminate, and by the thermograph of now coil pipe For T2.Meanwhile the range lookup that can shift to an earlier date according to where the temperature of outdoor environment goes out corresponding second preset temperature, so, when When the temperature T and T2 of coil pipe difference are more than the second preset temperature, that is, illustrate that the temperature T of coil pipe has begun to increase, and Terminate temperature during defrost for the first time higher than air conditioner, so as to illustrate, the frost on outdoor heat exchanger has been changed totally, Otherwise, temperature T can not possibly be more than T2, therefore can close the first heating element heater and the second heating element heater, and opening expansion valve Normal aperture is arrived in degree regulation, so that the first heating element heater and the second heating element heater can stop heating, so as to save energy Consumption, while enable air conditioner to start normally to heat.

In any of the above-described embodiment, it is preferable that the second preset temperature is more than or equal to 3 DEG C and is less than or equal to 5 DEG C.

In those embodiments, it can will determine that air conditioner is arranged to 3 DEG C minus 5 DEG C close to the temperature threshold for terminating defrost, this After sample enables air conditioner after defrost temperature is terminated more than air conditioner, and the temperature of coil pipe has been gone up, end temp Compensation, to ensure that white certainization is over, and then it can prevent frost from not changing clean situation and occurring.

In any of the above-described embodiment, it is preferable that control unit 430 is additionally operable to control unit 430 and is additionally operable in heating mould Under formula, control detection unit 420 detects the temperature of outdoor environment, and the temperature of the outdoor environment detected in detection unit 420 During less than or equal to three preset temperatures, control detection unit 420 detects the temperature of a coil pipe every prefixed time interval a, and Thermograph by the coil pipe of ith detection is Ti, and when the number i of detection is more than b, judges T_i+b-T_iWhether T is less than_i- T_i-b, and in T_i+b- Ti ＜ T_i-T_i-bWhen, by T_iThermograph coil pipe when being first time frosting temperature T1；Wherein, when presetting Between to be spaced a unit be minute, a is positive number, and i is the integer more than or equal to 1, and b is the natural number more than or equal to 2.

In those embodiments, the temperature of coil pipe several times can be detected more, and after air conditioner frosting, the temperature meeting of air conditioner It is more and more lower, and that temperature can be low is increasingly faster, therefore, T_i+b- Ti and T_i-T_i-b, value be negative value, and T_i+b- Ti ＜ T_i- T_i-bRate of temperature change after illustrating in first section of Fixed Time Interval will than the temperature change in the last period Fixed Time Interval Greatly, i.e., temperature decline it is increasingly faster, therefore, you can illustrate, therefore air conditioner, just can be examined this in beginning frosting The thermograph of the coil pipe of survey is the temperature T1 of air conditioner first time frosting, so subsequently just can rapidly judged by T1 Whether air conditioner closes on frosting temperature, and can be taken appropriate measures when air conditioner closes on frosting temperature, to slow down frost Condense, and then the defrost cycle can be shortened, to prevent that fluctuations in indoor temperature is excessive.

As shown in Figure 5 and Figure 6, the embodiment of third aspect present invention provides a kind of air conditioner 500, and air conditioner 500 wraps Include：Indoor heat exchanger；Outdoor heat exchanger, it is connected by expansion valve with indoor heat exchanger, outdoor heat exchanger includes coil pipe 510；Add Hot component 520, in coil pipe 510, heating component 520 includes installation housing and the first heating being arranged in mounting shell body Element 520；The control device 400 of the air conditioner provided with any one of second aspect embodiment.

The air conditioner 500 that the embodiment of third aspect present invention provides, including outdoor heat exchanger, indoor heat exchanger and setting Expansion valve between outdoor heat exchanger and indoor heat exchanger and the heating component in the coil pipe 510 of heat exchanger installed outdoors 520, and the control device 400 of the air conditioner of any one of second aspect embodiment offer, therefore, there is any one of second aspect 400 beneficial effect that embodiment provides, will not be repeated here.

In the above embodiment, it is preferable that installation housing is installing pipe, installing pipe is arranged in coil pipe 510.

In those embodiments, installation housing is preferably arranged to installing pipe, so that installing pipe and coil pipe 510 being capable of groups Packaged tube, in order to install the installation of housing, meanwhile, this kind, which is set, can also be arranged on conventional heating tube in installing pipe, with Used as heating element heater.Meanwhile this kind of heating component is relatively common, thus be easy to purchase, so as to reduce product into This.

In the above embodiment, it is preferable that installation housing is U-shaped installing pipe, coil pipe 510 is connected with each other for multiple U-tubes Into coiled pipe, U-shaped installing pipe be arranged on a U-tube in.

In those embodiments, coil pipe 510 is preferably arranged to the coiled pipe that multiple U-tubes are interconnected to, because This coil pipe 510 is relatively common, and is frequently used for outdoor heat exchanger, thus is easy to purchase, so as to reduce production cost, this When, installation housing is preferably arranged to U-shaped installing pipe, so that the shape of coil pipe 510 and installation housing can be mutually adapted, from And the structure of product can be made more rationally compact.Meanwhile installing pipe is U-shaped installing pipe, area of dissipation is also increased, so as to increase The efficiency of heating surface of heating component 520 is added.

Wherein it is preferred to which installation housing is installing pipe, coil pipe 510 is coiled pipe, and installing pipe is arranged on the most lower of coiled pipe End.

In the above embodiment, it is preferable that air conditioner 500 also includes：At least one support member 530, is arranged on coil pipe 510 It is interior, for heating component 520 to be supported in coil pipe 510.

In those embodiments, air conditioner 500 also includes support member 530, specifically, will be heated using support member 530 The support of component 520 is arranged in coil pipe 510, and this kind, which is set, to realize heating component 520 in coil pipe 510 using support member 530 Interior location and installation, specifically, it can realize that heating component 520 axially and radially locates installation in coil pipe 510.Wherein, it is excellent Selection of land, installing pipe are arranged on a certain section of middle part of coiled pipe.

Wherein it is preferred to which support member 530 is support ring, and the quantity of support member 530 is multiple.

In the above embodiment, it is preferable that air conditioner 500 also includes：The indoor set of air conditioner 500, the indoor set of air conditioner 500 Inside it is provided with the second heating element heater, indoor heat exchanger and control unit；The outdoor unit of air conditioner 500, the outdoor unit of air conditioner 500 include Outdoor heat exchanger and heating component 520.

In those embodiments, using the first heating element heats coil pipe 510 in outdoor heat exchanger, so as to contract The short defrost cycle, meanwhile, second heating element heater can be set in the indoor set of air conditioner 500, so as to add using second Thermal element is additionally provided heat when air conditioner 500 heats deficiency to interior, to make up the heating defect of air conditioner 500.

Wherein it is preferred to air conditioner 500 is integral type air conditioner 500, for example, window air conditioner 500, now, air conditioner 500 indoor sets and the outdoor unit of air conditioner 500 are integrated, or air conditioner 500 is detachable air conditioner 500.

In the description of this specification, the description of term " one embodiment " etc. means that combining the embodiment or example describes Specific features, structure, material or feature be contained in the present invention at least one embodiment or example in.In this manual, Identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, the specific features of description, knot Structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.

The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for those skilled in the art For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made, Equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (24)

1. a kind of control method of air conditioner, for air conditioner, the air conditioner includes outdoor heat exchanger and indoor heat exchanger, with And the expansion valve between the outdoor heat exchanger and indoor heat exchanger is arranged on, the outdoor heat exchanger includes coil pipe, the disk The first heating element heater is provided with pipe, it is characterised in that the control method of the air conditioner includes：

Record the temperature T1 of air conditioner coil pipe in first time frosting；

The temperature of outdoor environment is detected, and according to residing for going out with the temperature of the outdoor environment temperature lookup of the outdoor environment The corresponding preset strategy of temperature range and the first preset temperature；

Terminate defrost for the first time in the air conditioner, and after the air conditioner switches to heating mode, detect the temperature of the coil pipe T is spent, and when T-T1 is less than or equal to first preset temperature found out, institute is controlled according to the preset strategy found out State the aperture of expansion valve and the opening and closing of first heating element heater.

2. the control method of air conditioner according to claim 1, it is characterised in that

The temperature range includes the first temperature range and second temperature section, and the temperature of first temperature range is more than institute State the temperature in second temperature section；

Wherein, the preset strategy corresponding with first temperature range is：Reduce the aperture of the expansion valve, with described The preset strategy is corresponding to two temperature ranges：Reduce the aperture of the expansion valve, open first heating element heater.

3. the control method of air conditioner according to claim 2, it is characterised in that

Temperature range more than 5 DEG C is the first temperature range, and the temperature less than or equal to 5 DEG C is second temperature section；And/or

First preset temperature corresponding with first temperature range is less than corresponding with the second temperature section described First preset temperature, or first preset temperature corresponding with first temperature range are 1 DEG C, with the second temperature area Between corresponding first preset temperature be 2 DEG C.

4. the control method of air conditioner according to claim 2, it is characterised in that also include：

Temperature range according to residing for being found out with the temperature of the outdoor environment temperature T of the outdoor environment it is corresponding Two preset temperatures；

The temperature T2 of air conditioner coil pipe at the end of first time defrost is recorded, is more than the second preset temperature in T-T2 When, first heating element heater is closed, by the aperture regulation of the expansion valve to original state.

5. the control method of air conditioner according to claim 1, it is characterised in that the air conditioner also includes being arranged on sky The second heating element heater in air conditioner indoor machine is adjusted, the control method of the air conditioner also includes：

When T-T1 is less than or equal to first preset temperature found out, according to the preset strategy control found out The opening and closing of second heating element heater.

6. the control method of air conditioner according to claim 5, it is characterised in that

The temperature range includes the first temperature range, second temperature section and the 3rd temperature range, and first humidity province Between temperature be more than the temperature in the second temperature section, the temperature in the second temperature section is more than the 3rd temperature range Temperature；

Wherein, the preset strategy corresponding with first temperature range is：Reduce the aperture of the expansion valve, with described The preset strategy is corresponding to two temperature ranges：Reduce the aperture of the expansion valve, open the first heating element heater, with described the The preset strategy is corresponding to three temperature ranges：Reduce the aperture of the expansion valve, open the first heating element heater, open second Heating element heater.

7. the control method of air conditioner according to claim 6, it is characterised in that

Temperature range more than 5 DEG C is the first temperature range, and the temperature range more than or equal to minus 5 DEG C less than or equal to 5 DEG C is second Temperature range, the temperature range less than minus 5 DEG C are the 3rd temperature range；And/or

First preset temperature corresponding with first temperature range is less than corresponding with the second temperature section described First preset temperature, first preset temperature corresponding with the second temperature section are less than and the 3rd temperature range pair First preset temperature answered, or first preset temperature corresponding with first temperature range are 1 DEG C, with described the First preset temperature corresponding to two temperature ranges is 2 DEG C, the corresponding with the 3rd temperature range described first default temperature Spend for 3 DEG C.

8. the control method of air conditioner according to claim 6, it is characterised in that also include：

Temperature range according to residing for being found out with the temperature of the outdoor environment temperature T of the outdoor environment it is corresponding Two preset temperatures；

The temperature T2 of air conditioner coil pipe at the end of first time defrost is recorded, is more than the second preset temperature in T-T2 When, first heating element heater is closed, second heating element heater is closed, by the aperture regulation of the expansion valve to initial shape State.

9. the control method of the air conditioner according to claim 4 or 8, it is characterised in that

Second preset temperature is more than or equal to 3 DEG C and is less than or equal to 5 DEG C.

10. the control method of air conditioner according to any one of claim 1 to 9, it is characterised in that record the air-conditioning Device is specially the step of the temperature T1 of the coil pipe in first time frosting：

In a heating mode, the temperature of outdoor environment is detected, and is less than or equal to the 3rd in the temperature for detecting the outdoor environment During preset temperature, every the temperature of the prefixed time interval a detections once coil pipe, and by the coil pipe of ith detection Thermograph is Ti, and when the number i of detection is more than b, judges T_i+b-T_iWhether T is less than_i-T_i-b, and in T_i+b- Ti ＜ T_i- T_i-bWhen, by T_iThermograph coil pipe when being first time frosting temperature T1；

Wherein, prefixed time interval a unit is minute, and a is positive number, and i is the integer more than or equal to 1, and b is more than or equal to 2 Natural number.

11. a kind of control device of air conditioner, for air conditioner, the air conditioner includes outdoor heat exchanger and indoor heat exchanger, And the expansion valve between the outdoor heat exchanger and indoor heat exchanger is arranged on, the outdoor heat exchanger includes coil pipe, described The first heating element heater is provided with coil pipe, it is characterised in that the control device of the air conditioner includes：

Recording unit, for recording the temperature T1 of air conditioner coil pipe in first time frosting；

Detection unit, for detecting the temperature of outdoor environment, and for detecting the temperature of the coil pipe；

Control unit, the temperature lookup of the outdoor environment for being detected according to the detection unit go out the temperature with the outdoor environment The corresponding preset strategy of the residing temperature range of degree and the first preset temperature；

Described control unit is additionally operable to terminate defrost for the first time in the air conditioner, and the air conditioner switches to heating mode Afterwards, the detection unit is controlled to detect the temperature T of the coil pipe, and the described first default temperature for being less than or equal to find out in T-T1 When spending, the aperture of the expansion valve and the opening and closing of first heating element heater are controlled according to the preset strategy found out.

12. the control device of air conditioner according to claim 11, it is characterised in that

The temperature range includes the first temperature range and second temperature section, and the temperature of first temperature range is more than institute State the temperature in second temperature section；

Wherein, the preset strategy corresponding with first temperature range is：Reduce the aperture of the expansion valve, with described The preset strategy is corresponding to two temperature ranges：Reduce the aperture of the expansion valve, open first heating element heater.

13. the control device of air conditioner according to claim 12, it is characterised in that

Temperature range more than 5 DEG C is the first temperature range, and the temperature less than or equal to 5 DEG C is second temperature section；And/or

First preset temperature corresponding with first temperature range is less than corresponding with the second temperature section described First preset temperature, or first preset temperature corresponding with first temperature range are 1 DEG C, with the second temperature area Between corresponding first preset temperature be 2 DEG C.

14. the control device of air conditioner according to claim 12, it is characterised in that

The recording unit is additionally operable to record the air conditioner at the end of the first time defrost described in the detection unit detection The temperature T2 of coil pipe；

Described control unit is additionally operable to according to residing for being found out with the temperature of the outdoor environment temperature T of the outdoor environment The second corresponding preset temperature of temperature range, and when T-T2 is more than the second preset temperature, first heating element heater is closed, By the aperture regulation of the expansion valve to original state.

15. the control device of air conditioner according to claim 11, it is characterised in that

The air conditioner also includes the second heating element heater being arranged in air conditioner room unit, and described control unit is additionally operable in T- When T1 is less than or equal to first preset temperature found out, according to the preset strategy control found out second heating The opening and closing of element.

16. the control device of air conditioner according to claim 15, it is characterised in that

The temperature range includes the first temperature range, second temperature section and the 3rd temperature range, and first humidity province Between temperature be more than the temperature in the second temperature section, the temperature in the second temperature section is more than the 3rd temperature range Temperature；

Wherein, the preset strategy corresponding with first temperature range is：Reduce the aperture of the expansion valve, with described The preset strategy is corresponding to two temperature ranges：Reduce the aperture of the expansion valve, open the first heating element heater, with described the The preset strategy is corresponding to three temperature ranges：Reduce the aperture of the expansion valve, open the first heating element heater, open second Heating element heater.

17. the control device of air conditioner according to claim 16, it is characterised in that

Temperature range more than 5 DEG C is the first temperature range, and the temperature range more than or equal to minus 5 DEG C less than or equal to 5 DEG C is second Temperature range, the temperature range less than minus 5 DEG C are the 3rd temperature range；And/or

First preset temperature corresponding with first temperature range is less than corresponding with the second temperature section described First preset temperature, first preset temperature corresponding with the second temperature section are less than and the 3rd temperature range pair First preset temperature answered, or first preset temperature corresponding with first temperature range are 1 DEG C, with described the First preset temperature corresponding to two temperature ranges is 2 DEG C, the corresponding with the 3rd temperature range described first default temperature Spend for 3 DEG C.

18. the control device of air conditioner according to claim 16, it is characterised in that also include：

The recording unit is additionally operable to record the air conditioner at the end of the first time defrost described in the detection unit detection The temperature T2 of coil pipe；

Described control unit is additionally operable to according to residing for being found out with the temperature of the outdoor environment temperature T of the outdoor environment The second corresponding preset temperature of temperature range, and when T-T2 is more than the second preset temperature, first heating element heater is closed, Second heating element heater is closed, by the aperture regulation of the expansion valve to original state.

19. the control device of the air conditioner according to claim 14 or 18, it is characterised in that

Second preset temperature is more than or equal to 3 DEG C and is less than or equal to 5 DEG C.

20. the control device of the air conditioner according to any one of claim 11 to 19, it is characterised in that

Described control unit is additionally operable in a heating mode, control the temperature of the detection unit detection outdoor environment, and in institute When stating the temperature of the outdoor environment that detection unit detects and being less than or equal to three preset temperatures, control the detection unit every The temperature of the coil pipe is detected once every prefixed time interval a, and is Ti by the thermograph of the coil pipe of ith detection, And when the number i of detection is more than b, judge T_i+b-T_iWhether T is less than_i-T_i-b, and in T_i+b- Ti ＜ T_i-T_i-bWhen, by T_iTemperature Degree is recorded as the temperature T1 of coil pipe during first time frosting；

Wherein, prefixed time interval a unit is minute, and a is positive number, and i is the integer more than or equal to 1, and b is more than or equal to 2 Natural number.

A kind of 21. air conditioner, it is characterised in that including：

Indoor heat exchanger；

Outdoor heat exchanger, it is connected by expansion valve with the indoor heat exchanger, the outdoor heat exchanger includes coil pipe；

Heating component, in the coil pipe, the heating component includes installation housing and is arranged in the mounting shell body The first heating element heater；With

The control device of air conditioner as any one of claim 11 to 20.

22. air conditioner according to claim 21, it is characterised in that

The installation housing is installing pipe, and the installing pipe is arranged in the coil pipe；And/or

The installation housing is U-shaped installing pipe, and the coil pipe is the coiled pipe that multiple U-tubes are interconnected to, the U-shaped installation Pipe is arranged in a U-tube.

23. the air conditioner according to claim 21 or 22, it is characterised in that the air conditioner also includes：

At least one support member, it is arranged in the coil pipe, the heating component is arranged on the coil pipe by the support member It is interior.

24. the air conditioner according to claim 21 or 22, it is characterised in that the air conditioner also includes：

Air conditioner room unit, the second heating element heater, the indoor heat exchanger and the control are provided with the air conditioner room unit Unit processed；

Air-conditioner outdoor unit, the air-conditioner outdoor unit include the outdoor heat exchanger and the heating component.