CN104101143A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN104101143A CN104101143A CN201410288847.4A CN201410288847A CN104101143A CN 104101143 A CN104101143 A CN 104101143A CN 201410288847 A CN201410288847 A CN 201410288847A CN 104101143 A CN104101143 A CN 104101143A
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Abstract
The invention provides an air conditioner and a control method of the air conditioner, wherein the air conditioner comprises a four-way valve, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a throttling device, a refrigerant heating device, a valve body and a temperature control device, wherein the refrigerant heating device is connected into a system of the air conditioner in series, and is used for heating refrigerant in the system of the air conditioner; the valve body is connected with the throttling device in parallel and is opened when the air conditioner performs frosting; the temperature control device is used for detecting the temperature of the refrigerant at a refrigerant outlet of the compressor in a heating mode of the air conditioner, and controlling the refrigerant heating device to work according to the temperature of the refrigerant. According to the air conditioner disclosed by the invention, the refrigerant heating device is connected into the air conditioning system in series, the valve body and the throttling device are connected in parallel, the temperature control device is capable of controlling the refrigerant heating device to work according to the temperature of the refrigerant at the refrigerant outlet of the compressor, compared with the prior art, the air conditioner is capable of heating indoors in a sustainable manner, the condition that a traditional air conditioner absorbs heat from the indoor environment for frosting of the outdoor heat exchanger during frosting is avoided, and the indoor temperature fluctuation is small.
Description
Technical field
The present invention relates to a kind of air-conditioning technical field, in particular to the control method of a kind of air-conditioning and this air-conditioning.
Background technology
Along with improving constantly of people's quality of life, people have higher requirement to the comfortableness of air-conditioned room, be not only to rest on traditional refrigeration to the expectation of air-conditioning, on heat-production functions, and then refrigeration to air-conditioning, heating effect, refrigeration, the comfortableness heating is had higher requirement, in now air-conditioned use procedure, when a lot of consumers complain air-conditioning heating defrost, fluctuations in indoor temperature is large, sometimes hot and sometimes cold, the comfort level in room and user's experience impression are had a strong impact on, and traditional heat pump type air conditioner is most adopts cross valve commutation to control defrost, cross valve commutation when defrosting, make outdoor heat exchanger heat release, indoor heat exchanger heat absorption, cause indoor temperature to reduce, room is sometimes hot and sometimes cold, in addition, when winter, air humidity was larger, frequent defrost meeting has a strong impact on the life-span of cross valve, and the noise that cross valve commutation produces when defrost also causes user's complaint.
Summary of the invention
In order one of to solve the problems of the technologies described above at least, it is a kind of in the time heating defrost that one object of the present invention is to provide, and fluctuations in indoor temperature is little, and the low air-conditioning of noise.
Another object of the present invention is to provide a kind of control method of above-mentioned air-conditioning.
In view of this, the embodiment of first aspect present invention provides a kind of air-conditioning, comprising: cross valve; Compressor, the refrigerant entrance of described compressor is connected with the S mouth of described cross valve, and refrigerant exit is connected with the D mouth of described cross valve; Outdoor heat exchanger, the first refrigerant gateway of described outdoor heat exchanger is connected with the C mouth of described cross valve; Indoor heat exchanger, the 3rd refrigerant gateway of described indoor heat exchanger is connected with the E mouth of cross valve, and the 4th refrigerant gateway is connected with the second refrigerant gateway of described outdoor heat exchanger; Throttling arrangement, described throttling arrangement is on the pipeline between described indoor heat exchanger and described outdoor heat exchanger, and the first port of described throttling arrangement is connected with described outdoor heat exchanger, and the second port is connected with described indoor heat exchanger; Refrigerant heater, described refrigerant heater is serially connected in the system of described air-conditioning, heats for the refrigerant to air-conditioning system; Valve body, the 3rd port of described valve body is connected with described first port of described throttling arrangement, and the 3rd port is connected with described second port of described throttling arrangement, and described valve body is opened in the time of described air-conditioning defrost; And attemperating unit, described attemperating unit, under air-conditioning heating pattern, detects the temperature of the refrigerant exit place refrigerant of described compressor, and according to refrigerant heater work described in the temperature control of refrigerant.
Air-conditioning provided by the invention, by be serially connected with refrigerant heater in the system of air-conditioning, the first port of valve body is connected with the pipeline between described indoor heat exchanger and throttling arrangement simultaneously, the second port is connected with the pipeline between outdoor heat exchanger and throttling arrangement, be that valve body is in parallel with throttling arrangement, temperature control device can be according to refrigerant heater work described in the temperature control of the refrigerant exit place refrigerant of compressor, compared with prior art, the sustainable indoor heating of giving of air-conditioning, while there is not traditional air-conditioning defrost, absorb heat to the situation of outdoor heat exchanger defrost from indoor environment, fluctuations in indoor temperature is little, thereby avoid the damage to compressor of traditional defrost mode compression machine repeatedly starting and stopping, extend the life-span of compressor, and then the service life that has extended complete machine simultaneously, the wearing and tearing of having avoided traditional defrost pattern cross valve repeatedly to commutate to cross valve, extend the life-span of cross valve, thereby extend the service life of complete machine, particularly, in the time of off-premises station generation frosting, open the valve body in parallel with throttling arrangement, make the refrigerant flowing out from indoor heat exchanger not pass through throttling arrangement direct current to off-premises station heat release defrost, simultaneously, attemperating unit detect described compressor refrigerant exit place refrigerant temperature and obtain temperature value, in the time that temperature value is less than or equal to preset temperature value, refrigerant heater work described in described control device control, in the time that temperature value is greater than preset temperature value, described refrigerant heater is not worked, defrost finishes rear refrigerant heater and the valve body of simultaneously closing, air-conditioning provided by the invention continues to indoor heating in heating process whole, while there is not traditional air-conditioning defrost, absorb heat to the situation of outdoor heat exchanger defrost from indoor environment, so fluctuations in indoor temperature is little, greatly promote user's experience.
In addition, the air-conditioning in above-described embodiment provided by the invention can also have following additional technical feature:
According to one embodiment of present invention, described refrigerant heater is serially connected between the refrigerant entrance of described compressor and the S mouth of described cross valve.
According to one embodiment of present invention, described refrigerant heater is serially connected in the described refrigerant exit of described compressor and the D mouth of described cross valve is connected.
According to one embodiment of present invention, described refrigerant heater is serially connected in described the 4th refrigerant gateway of the 3rd port and the described indoor heat exchanger of described valve body.
According to one embodiment of present invention, described refrigerant heater is serially connected between the 4th port of described valve body and the described second refrigerant gateway of described indoor heat exchanger.
According to one embodiment of present invention, described attemperating unit comprises: temperature sensor, and described temperature sensor is arranged on the refrigerant exit place of described compressor, for detection of the temperature of the refrigerant exit place refrigerant of described compressor and obtain temperature value; And control device, described control device compares temperature value and preset temperature value, in the time that temperature value is less than or equal to preset temperature value, and refrigerant heater work described in described control device control, in the time that temperature value is greater than preset temperature value, controls described refrigerant heater and do not work.
According to one embodiment of present invention, air-conditioning also comprises: gas-liquid separator, and described gas-liquid separator is arranged on the pipeline between the described refrigerant entrance of described compressor and the S mouth of described cross valve; And oil eliminator, described oil eliminator is arranged on the pipeline between the described refrigerant exit of described compressor and the D mouth of described cross valve.
According to one embodiment of present invention, described valve body is magnetic valve.
Second aspect present invention embodiment provides a kind of control method of air-conditioning, comprising:
Step 102 is opened valve body in the time of off-premises station frosting;
Step 104, temperature sensor detect described compressor refrigerant exit place refrigerant temperature and obtain temperature value;
Step 106, control device receives described temperature value, and according to refrigerant heater work described in described temperature value control.
The control method of the air-conditioning that the present invention's the second inventive embodiments provides, in the time of off-premises station generation frosting, open valve body, make the refrigerant flowing out from indoor heat exchanger not pass through throttling arrangement direct current to off-premises station heat release defrost, simultaneously, attemperating unit detect described compressor refrigerant exit place refrigerant temperature and obtain temperature value, in the time that temperature value is less than or equal to preset temperature value, refrigerant heater work described in described control device control, in the time that temperature value is greater than preset temperature value, described refrigerant heater is not worked, defrost finishes rear refrigerant heater and the valve body of simultaneously closing, air-conditioning provided by the invention continues to indoor heating in heating process whole, while there is not traditional air-conditioning defrost, absorb heat to the situation of outdoor heat exchanger defrost from indoor environment, so fluctuations in indoor temperature is little, greatly promote user's experience.
According to one embodiment of the invention, step 106 comprises:
Step 1601, described control device compares temperature value and preset temperature value;
Step 1602, in the time that temperature value is less than or equal to preset temperature value, refrigerant heater work described in described control device control, in the time that temperature value is greater than preset temperature value, described refrigerant heater is not worked.
Additional aspect of the present invention and advantage will become in description part below obviously, or recognize by practice of the present invention.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the structural representation of the first embodiment of air-conditioning of the present invention;
Fig. 2 is the structural representation of the second embodiment of air-conditioning of the present invention;
Fig. 3 is the structural representation of the third embodiment of air-conditioning of the present invention;
Fig. 4 is the structural representation of the 4th kind of embodiment of air-conditioning of the present invention;
Fig. 5 is the structured flowchart of attemperating unit of the present invention;
Fig. 6 is the flow chart of the control method of air-conditioning of the present invention.
Wherein, in Fig. 1 to Fig. 5, the corresponding relation between Reference numeral and component names is:
1 cross valve, 2 compressors, 3 outdoor heat exchangers, 4 indoor heat exchangers, 5 throttling arrangements, 6 refrigerant heaters, 7 valve bodies, 8 attemperating units, 801 temperature sensors, 802 control device.
Detailed description of the invention
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
A lot of details are set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subject to the restriction of following public specific embodiment.
Below with reference to Fig. 1 to Fig. 5, described according to some embodiments of the invention air-conditioning is described.
As shown in Figures 1 to 5, the air-conditioning that the embodiment of first aspect present invention provides comprises: cross valve 1, compressor 2, outdoor heat exchanger 3, indoor heat exchanger 4, throttling arrangement 5, refrigerant heater 6, valve body 7 and attemperating unit 8.
Wherein, the refrigerant entrance of compressor 2 is connected with the S mouth of cross valve 1, and refrigerant exit is connected with the D mouth of cross valve 1; The first refrigerant gateway of outdoor heat exchanger 3 is connected with the C mouth of cross valve 1; The 3rd refrigerant gateway of indoor heat exchanger 4 is connected with the E mouth of cross valve 1, and the 4th refrigerant gateway is connected with the second refrigerant gateway of outdoor heat exchanger 3; Throttling arrangement 5 is on the pipeline between indoor heat exchanger 4 and outdoor heat exchanger 3, and the first port of throttling arrangement 5 is connected with outdoor heat exchanger 3, and the second port is connected with indoor heat exchanger 4; Refrigerant heater 6 is serially connected in the system of air-conditioning, heats for the refrigerant to air-conditioning system; The 3rd port of valve body 7 is connected with the first port of throttling arrangement 5, and the 3rd port is connected with the second port of throttling arrangement 5, and valve body 7 is opened in the time of air-conditioning defrost; Attemperating unit 8, under air-conditioning heating pattern, detects the temperature of the refrigerant exit place refrigerant of compressor 2, and works according to the temperature control refrigerant heater 6 of refrigerant.
In a specific embodiment of the present invention, as shown in Figure 1, refrigerant heater 6 is serially connected between the refrigerant entrance of compressor 2 and the S mouth of cross valve 1.
In a specific embodiment of the present invention, as shown in Figure 2, refrigerant heater 6 is serially connected in the refrigerant exit of compressor 2 and the D mouth of cross valve 1 is connected.
In a specific embodiment of the present invention, as shown in Figure 3, refrigerant heater 6 is serially connected in the 4th refrigerant gateway of the 3rd port and the indoor heat exchanger 4 of valve body 7.
In a specific embodiment of the present invention, as shown in Figure 4, refrigerant heater 6 is serially connected between the 4th port of valve body 7 and the second refrigerant gateway of indoor heat exchanger 4.
Air-conditioning provided by the invention, by be serially connected with refrigerant heater 6 in the system of air-conditioning, the first port of valve body 7 is connected with the pipeline between indoor heat exchanger 4 and throttling arrangement 5 simultaneously, the second port is connected with the pipeline between outdoor heat exchanger 3 and throttling arrangement 5, be that valve body 7 is in parallel with throttling arrangement 5, temperature control device 802 can be worked according to the temperature control refrigerant heater 6 of the refrigerant exit place refrigerant of compressor 2, compared with prior art, the sustainable indoor heating of giving of air-conditioning, while there is not traditional air-conditioning defrost, absorb heat to the situation of outdoor heat exchanger 3 defrosts from indoor environment, fluctuations in indoor temperature is little, thereby avoid the damage to compressor 2 of traditional defrost mode compression machine 2 repeatedly starting and stoppings, extend the life-span of compressor 2, and then the service life that has extended complete machine simultaneously, the wearing and tearing of having avoided traditional defrost pattern cross valve 1 repeatedly to commutate to cross valve 1, extend the life-span of cross valve 1, thereby extend the service life of complete machine.
In one embodiment of the invention, attemperating unit 8 comprises: temperature sensor 801 and control device 802.
Particularly, temperature sensor 801 is arranged on the refrigerant exit place of compressor 2, for detection of the temperature of the refrigerant exit place refrigerant of compressor 2 and obtain temperature value; Control device 802 compares temperature value and preset temperature value, and in the time that temperature value is less than or equal to preset temperature value, control device 802 is controlled refrigerant heater 6 and worked, and in the time that temperature value is greater than preset temperature value, refrigerant heater 6 is not worked.
In one embodiment of the invention, air-conditioning also comprises: gas-liquid separator, and gas-liquid separator is arranged on the pipeline between the refrigerant entrance of compressor 2 and the S mouth of cross valve 1; And oil eliminator, oil eliminator is arranged on the pipeline between the refrigerant exit of compressor 2 and the D mouth of cross valve 1.
In this embodiment, the setting of gas-liquid separator 6, can not have the liquid refrigerants of gasification to separate from gaseous coolant by entering in compressor 2, thereby prevent that liquid refrigerants from entering in compressor 2, cause the situation of compressor 2 liquid hammers to occur, improve the reliability of product, and then improved the competitiveness of product in market; The setting of oil eliminator 7, refrigeration oil in the refrigerant of outflow compressor 2 can be separated from refrigerant, and refrigeration oil drainage is returned in compressor 2, avoid compressor 2 to lack oil condition and occur, improve the reliability of product, and then improved the competitiveness of product in market.
In one embodiment of the invention, valve body 7 is magnetic valve.
It should be appreciated by those skilled in the art, valve body 7 is controlled at the break-make of pipeline, and the magnetic valve one providing in more than the present invention, has not just exemplified one by one at this, but all should be in the scope of protection of the invention.
As shown in Figure 6, the control method of the air-conditioning that second aspect present invention embodiment provides, comprising:
Step 102 is opened valve body 7 in the time of off-premises station frosting;
Step 104, temperature sensor 801 detect compressor 2 refrigerant exit place refrigerant temperature and obtain temperature value;
Step 1601, control device 802 compares temperature value and preset temperature value;
Step 1602, in the time that temperature value is less than or equal to preset temperature value, control device 802 is controlled refrigerant heater 6 and is worked, and in the time that temperature value is greater than preset temperature value, refrigerant heater 6 is not worked.
The control method of the air-conditioning that the present invention's the second inventive embodiments provides, in the time of off-premises station generation frosting, open valve body 7, make the refrigerant flowing out from indoor heat exchanger 4 not pass through throttling arrangement 5 direct currents to off-premises station heat release defrost, simultaneously, attemperating unit 8 detect compressor 2 refrigerant exit place refrigerant temperature and obtain temperature value, in the time that temperature value is less than or equal to preset temperature value, control device 802 is controlled refrigerant heater 6 and is worked, in the time that temperature value is greater than preset temperature value, refrigerant heater 6 is not worked, defrost finishes rear refrigerant heater 6 and the valve body 7 of simultaneously closing, air-conditioning provided by the invention continues to indoor heating in heating process whole, while there is not traditional air-conditioning defrost, absorb heat to the situation of outdoor heat exchanger 3 defrosts from indoor environment, so fluctuations in indoor temperature is little, greatly promote user's experience.
In sum, air-conditioning provided by the invention, by be serially connected with refrigerant heater 6 in the system of air-conditioning, the first port of valve body 7 is connected with the pipeline between indoor heat exchanger 4 and throttling arrangement 5 simultaneously, the second port is connected with the pipeline between outdoor heat exchanger 3 and throttling arrangement 5, be that valve body 7 is in parallel with throttling arrangement 5, temperature control device 802 can be worked according to the temperature control refrigerant heater 6 of the refrigerant exit place refrigerant of compressor 2, compared with prior art, the sustainable indoor heating of giving of air-conditioning, while there is not traditional air-conditioning defrost, absorb heat to the situation of outdoor heat exchanger 3 defrosts from indoor environment, fluctuations in indoor temperature is little, thereby avoid the damage to compressor 2 of traditional defrost mode compression machine 2 repeatedly starting and stoppings, extend the life-span of compressor 2, and then the service life that has extended complete machine simultaneously, the wearing and tearing of having avoided traditional defrost pattern cross valve 1 repeatedly to commutate to cross valve 1, extend the life-span of cross valve 1, thereby extend the service life of complete machine, particularly, in the time of off-premises station generation frosting, open the valve body in parallel with throttling arrangement 57, make the refrigerant flowing out from indoor heat exchanger 4 not pass through throttling arrangement 5 direct currents to off-premises station heat release defrost, simultaneously, attemperating unit 8 detect compressor 2 refrigerant exit place refrigerant temperature and obtain temperature value, in the time that temperature value is less than or equal to preset temperature value, control device 802 is controlled refrigerant heater 6 and is worked, in the time that temperature value is greater than preset temperature value, refrigerant heater 6 is not worked, defrost finishes rear refrigerant heater 6 and the valve body 7 of simultaneously closing, air-conditioning provided by the invention continues to indoor heating in heating process whole, while there is not traditional air-conditioning defrost, absorb heat to the situation of outdoor heat exchanger 3 defrosts from indoor environment, so fluctuations in indoor temperature is little, greatly promote user's experience.
In the present invention, term " first ", " second ", " the 3rd ", " the 4th " only object for describing, and can not be interpreted as instruction or hint relative importance.The terms such as term " installation ", " being connected ", " connection ", " fixing " all should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the description of this description, the description of term " embodiment ", " some embodiment ", " specific embodiment " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an air-conditioning, is characterized in that, comprising:
Cross valve;
Compressor, the refrigerant entrance of described compressor is connected with the S mouth of described cross valve, and refrigerant exit is connected with the D mouth of described cross valve;
Outdoor heat exchanger, the first refrigerant gateway of described outdoor heat exchanger is connected with the C mouth of described cross valve;
Indoor heat exchanger, the 3rd refrigerant gateway of described indoor heat exchanger is connected with the E mouth of cross valve, and the 4th refrigerant gateway is connected with the second refrigerant gateway of described outdoor heat exchanger;
Throttling arrangement, described throttling arrangement is on the pipeline between described indoor heat exchanger and described outdoor heat exchanger, and the first port of described throttling arrangement is connected with described outdoor heat exchanger, and the second port is connected with described indoor heat exchanger;
Refrigerant heater, described refrigerant heater is serially connected in the system of described air-conditioning, heats for the refrigerant to air-conditioning system;
Valve body, the 3rd port of described valve body is connected with described first port of described throttling arrangement, and the 3rd port is connected with described second port of described throttling arrangement, and described valve body is opened in the time of described air-conditioning defrost; With
Attemperating unit, described attemperating unit, under air-conditioning heating pattern, detects the temperature of the refrigerant exit place refrigerant of described compressor, and according to refrigerant heater work described in the temperature control of refrigerant.
2. air-conditioning according to claim 1, is characterized in that,
Described refrigerant heater is serially connected between the refrigerant entrance of described compressor and the S mouth of described cross valve.
3. air-conditioning according to claim 1, is characterized in that,
Described refrigerant heater is serially connected in the described refrigerant exit of described compressor and the D mouth of described cross valve is connected.
4. air-conditioning according to claim 1, is characterized in that,
Described refrigerant heater is serially connected in described the 4th refrigerant gateway of the 3rd port and the described indoor heat exchanger of described valve body.
5. air-conditioning according to claim 1, is characterized in that,
Described refrigerant heater is serially connected between the 4th port of described valve body and the described second refrigerant gateway of described indoor heat exchanger.
6. according to the air-conditioning described in any one in claim 1 to 5, it is characterized in that,
Described attemperating unit comprises:
Temperature sensor, described temperature sensor is arranged on the refrigerant exit place of described compressor, for detection of the temperature of the refrigerant exit place refrigerant of described compressor and obtain temperature value; With
Control device, described control device compares temperature value and preset temperature value, in the time that temperature value is less than or equal to preset temperature value, and refrigerant heater work described in described control device control, in the time that temperature value is greater than preset temperature value, described refrigerant heater is not worked.
7. air-conditioning according to claim 6, is characterized in that, also comprises:
Gas-liquid separator, described gas-liquid separator is arranged on the pipeline between the described refrigerant entrance of described compressor and the S mouth of described cross valve; With
Oil eliminator, described oil eliminator is arranged on the pipeline between the described refrigerant exit of described compressor and the D mouth of described cross valve.
8. air-conditioning according to claim 7, is characterized in that,
Described valve body is magnetic valve.
9. a control method for air-conditioning, is characterized in that, comprising:
Step 102 is opened valve body in the time of off-premises station frosting;
Step 104, the temperature of the refrigerant exit place refrigerant of temperature sensor detection compressor also obtains temperature value;
Step 106, control device receives described temperature value, and according to described temperature value control refrigerant heater work.
10. according to the control method of air-conditioning described in claim 9, it is characterized in that, step 106 comprises:
Step 1601, described control device compares temperature value and preset temperature value;
Step 1602, in the time that temperature value is less than or equal to preset temperature value, refrigerant heater work described in described control device control, in the time that temperature value is greater than preset temperature value, described refrigerant heater is not worked.
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| CN201410288847.4A CN104101143A (en) | 2014-06-24 | 2014-06-24 | Air conditioner and control method thereof |
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| CN106871511A (en) * | 2015-12-10 | 2017-06-20 | 暵旸绿能科技股份有限公司 | Heat pump system |
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| CN110173823A (en) * | 2019-05-31 | 2019-08-27 | 广东美的制冷设备有限公司 | Progress control method, control device, air conditioner and computer readable storage medium |
| CN110173823B (en) * | 2019-05-31 | 2021-06-29 | 广东美的制冷设备有限公司 | Operation control method, control device, air conditioner, and computer-readable storage medium |
| CN110736214A (en) * | 2019-09-27 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN111503825A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Control method of air conditioning system and air conditioning system |
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