CN105758075A - Sectional type heating and defrosting air-conditioning system and heating and defrosting control method implemented by same - Google Patents
Sectional type heating and defrosting air-conditioning system and heating and defrosting control method implemented by same Download PDFInfo
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- CN105758075A CN105758075A CN201610205985.0A CN201610205985A CN105758075A CN 105758075 A CN105758075 A CN 105758075A CN 201610205985 A CN201610205985 A CN 201610205985A CN 105758075 A CN105758075 A CN 105758075A
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- heat converter
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- defrosting
- outdoor heat
- compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a sectional type heating and defrosting air-conditioning system which comprises a compressor (1), an indoor heat exchanger (7) and at least two outdoor heat exchangers (31 and 32). One end of each outdoor heat exchanger is connected to an exhaust port or an air suction port of the compressor (1) by an outdoor control valve, the other ends of the outdoor heat exchangers (31 and 32) are gathered with one another and then are connected to one end of the indoor heat exchanger (7), and the other end of the indoor heat exchanger (7) is connected to the air suction port or the exhaust port of the compressor by an indoor control valve. The sectional type heating and defrosting air-conditioning system has the advantages that the outdoor heat exchangers can be divided into more than two flow paths, and accordingly technical problems of decrease of indoor heat, lowering of the temperatures and influence on the comfort of users in heating and defrosting periods of air-conditioning systems in the prior art can be effectively solved. The invention further relates to a sectional type heating and defrosting control method implemented by the sectional type heating and defrosting air-conditioning system.
Description
Technical field
The invention belongs to air-conditioning technical field, be specifically related to air conditioning system and the heating and defrosting control method thereof of a kind of stagewise heating and defrosting.
Background technology
When existing heat pump type air conditioner heats, the evaporating temperature of outdoor heat exchanger will lower than ambient temperature could heat exchange, when lower than the dew point temperature of environment, the fin surface of heat exchanger will produce condensed water.The temperature of heat exchanger is lower than 0 DEG C, and condensed water is just changed into frost and is attached to heat exchanger surface.This phenomenon can worsen heat exchange property.
In present air-conditioner when heating and defrosting, the method being generally adopted hot gas defrosting defrosts, and namely by the commutation of cross valve, forms kind of refrigeration cycle and defrosts.But adopt the air-conditioner of this technology when defrosting, owing to belonging to refrigerating operaton, inevitably draw heat indoor, and owing to during defrosting and after defrosting, in a period of time, indoor cannot provide heat, cause that indoor temperature reduces excessive, affect user satisfaction.
Owing to air conditioning system of the prior art can cause that during heating and defrosting indoor heat minimizing, temperature reduce, affecting the technical problems such as users'comfort, therefore research design of the present invention goes out air conditioning system and the heating and defrosting control method thereof of a kind of stagewise heating and defrosting.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is in that to overcome air conditioning system of the prior art that indoor heat can be caused during heating and defrosting to reduce, temperature reduction, affect the defect of users'comfort, thus providing air conditioning system and the heating and defrosting control method thereof of a kind of stagewise heating and defrosting.
The present invention provides the air conditioning system of a kind of stagewise heating and defrosting, it includes compressor, indoor heat converter, at least two outdoor heat converter, one end of each described outdoor heat converter is connected to air vent or the air entry of described compressor respectively through outdoor control valve, the other end of outdoor heat converter described at least two is connected to one end of described indoor heat converter after converging, the other end of described indoor heat converter is connected to air entry or the air vent of described compressor by indoor control valve.
Preferably, one end of each described outdoor heat converter is connected to the air vent of described compressor respectively through an outdoor control valve or is connected to the air entry of described compressor by the switching of this outdoor control valve.
Preferably, the other end of described indoor heat converter is connected to the air entry of described compressor by described indoor control valve or is connected to the air vent of described compressor by the switching of coupled indoor control valve.
Preferably, described outdoor heat converter includes the first outdoor heat converter and the second outdoor heat converter.
Preferably, described indoor control valve is at least one in described outdoor control valve, and it is cross valve, including the first cross valve being all connected with the first outdoor heat converter and the second cross valve being all connected with described second outdoor heat converter, described first cross valve or the second cross valve are connected to described indoor heat converter.
Preferably, four links of described first cross valve are respectively connecting to described first outdoor heat converter, described indoor heat converter, the suction end of described compressor and exhaust end, and four links of described second cross valve are respectively connecting to described second outdoor heat converter, described indoor heat converter, the suction end of described compressor and exhaust end.
Preferably, the pipeline being connected between described first cross valve and described indoor heat converter is additionally provided with the first electromagnetic valve；The pipeline being connected between described second cross valve and described indoor heat converter is additionally provided with the second electromagnetic valve.
Preferably, described indoor control valve is the valve increased on the basis of described outdoor control valve, and it is three-way valve, including the first three-way valve being connected with the first outdoor heat converter and the second three-way valve being connected with described second outdoor heat converter, and the 3rd three-way valve being connected with described indoor heat converter.
Preferably, three links of described first three-way valve are respectively connecting to described first outdoor heat converter, the suction end of described compressor and exhaust end, three links of described second three-way valve are respectively connecting to described second outdoor heat converter, the suction end of described compressor and exhaust end, and three links of described 3rd three-way valve are respectively connecting to described indoor heat converter, the suction end of described compressor and exhaust end.
Preferably, on the pipeline that the outdoor heat converter described at least two is connected with between described indoor heat converter, the one end near each heat exchanger is provided with expansion valve respectively.
The present invention also provides for the control method of a kind of stagewise heating and defrosting, and it uses the air conditioning system of aforesaid stagewise heating and defrosting, by the guiding controlling valve in switched system, at least two outdoor heat converter is carried out stagewise heating and defrosting.
Preferably, when described outdoor control valve is cross valve, and when this cross valve includes the first cross valve and the second cross valve and system also includes the first and second electromagnetic valves, regulating the first cross valve makes the port of export of compressor and the first outdoor heat converter be connected, regulate the second cross valve makes the port of export of compressor be connected with indoor heat converter simultaneously, close the first electromagnetic valve, open the second electromagnetic valve so that indoor heat converter maintenance heats, the first outdoor heat converter heating and defrosting.
Preferably, regulating the first cross valve makes the port of export of compressor be connected with indoor heat converter, regulate the second cross valve makes the port of export of compressor and the second outdoor heat converter be connected simultaneously, open the first electromagnetic valve, close the second electromagnetic valve so that indoor heat converter maintenance heats, the second outdoor heat converter heating and defrosting.
Preferably, when described outdoor control valve is three-way valve, and this three-way valve is when including the first three-way valve, the second three-way valve and three three-way valve, regulating the first three-way valve makes the port of export of compressor and the first outdoor heat converter be connected, and adjustment the second three-way valve makes the entrance point of compressor and the second outdoor heat converter be connected, regulate the 3rd three-way valve makes the port of export of compressor be connected with indoor heat converter simultaneously so that indoor heat converter maintenance heats, the first outdoor heat converter heating and defrosting.
Preferably, regulating the first three-way valve makes the entrance point of compressor and the first outdoor heat converter be connected, and adjustment the second three-way valve makes the port of export of compressor and the second outdoor heat converter be connected, regulate the 3rd three-way valve makes the port of export of compressor be connected with indoor heat converter simultaneously so that indoor heat converter maintenance heats, the second outdoor heat converter heating and defrosting.
The air conditioning system of a kind of stagewise heating and defrosting provided by the invention and the control method of stagewise heating and defrosting have the advantages that
1. the stream by outdoor heat exchanger being divided into more than two sections, heating period, when system reaches defrosting condition, by valve body action, the steam that compressor is discharged is while supply indoor heating, two sections of streams carry out successively defrosting, it is possible to indoor heat can be caused during heating and defrosting to reduce efficiently against air conditioning system of the prior art, temperature reduces, and affects the technical problem of users'comfort；
2. the liquid refrigerants that becomes throttles after mix with the coolant becoming liquid after indoor heats and after defrosting, and another section of outdoor heat converter heat exchange (absorb heat and evaporate), it is ensured that compressor does not produce " liquid hammer " phenomenon during defrosting；
3. can after one section of stream outdoor heat exchanger reaches releasing defrosting condition, by valve body action, it is switched to another section of stream outdoor heat exchanger to defrost, to reach whole stream outdoor heat exchangers are carried out segmentation, simultaneously do not defrosted, reaches purpose and the effect of all defrostings；
4., after the outdoor heat exchanger of whole streams completes defrosting, also by valve body action, recover heating operation and continuously form the purpose to indoor heating, defrosting processing efficient, convenient, fast.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air conditioning system of the stagewise heating and defrosting of the first embodiment of the present invention；
Fig. 2 is the structural representation of the air conditioning system of the stagewise heating and defrosting of the second embodiment of the present invention.
In figure, accompanying drawing labelling is expressed as:
1 compressor, 21A the first cross valve, 22A the second cross valve, 21B the first three-way valve, 22B the second three-way valve, 23B the 3rd three-way valve, 31 first outdoor heat converters, 32 second outdoor heat converters, 41 first outdoor expansion valves, 42 second outdoor expansion valves, 51 liquid side stop valves, 52 gas side stop valves, 6 indoor expansion valve, 7 indoor heat converters, 8 gas-liquid separators, 81 first electromagnetic valves, 82 second electromagnetic valves, 91 first blower fans, 92 second blower fans, 93 the 3rd blower fans.
Detailed description of the invention
As shown in Figure 1-2, the present invention provides the air conditioning system of a kind of stagewise heating and defrosting, it includes compressor 1, indoor heat converter 7, at least two outdoor heat converter 31, 32, one end of each described outdoor heat converter is connected to air vent or the air entry of described compressor 1 respectively through outdoor control valve (outdoor control valve here refers to the cross valve in Fig. 1 or the three-way valve in Fig. 2), outdoor heat converter 31 described at least two, the other end of 32 is connected to one end of described indoor heat converter 7 after converging, the other end of described indoor heat converter 7 is connected to air entry or the air vent of described compressor by indoor control valve.
By outdoor heat exchanger being divided into the stream of more than two sections, heating period, when system reaches defrosting condition, by valve body action, the steam that compressor is discharged is while supply indoor heating, two sections of streams carry out successively defrosting, it is possible to indoor heat can be caused during heating and defrosting to reduce efficiently against air conditioning system of the prior art, temperature reduces, and affects the technical problem of users'comfort；
And the liquid refrigerants become after defrosting throttles after mixing with the coolant becoming liquid after indoor heats, and in another section of outdoor heat converter heat exchange (heat absorption evaporation), it is ensured that compressor does not produce " liquid hammer " phenomenon during defrosting；
Can after at least one section of stream outdoor heat exchanger reaches releasing defrosting condition, by valve body action, it is switched at least another section of stream outdoor heat exchanger to defrost, to reach whole stream outdoor heat exchangers are carried out segmentation, simultaneously do not defrosted, reaches purpose and the effect of all defrostings；
After the outdoor heat exchanger of whole streams completes defrosting, also by valve body action, recover heating operation and continuously form the purpose to indoor heating, defrosting processing efficient, convenient, fast.
Preferably, one end of each described outdoor heat converter is connected to the air vent of described compressor 1 respectively through an outdoor control valve or is connected to the air entry of described compressor 1 by the switching of this outdoor control valve.This is the preferred implementation realizing being connected to one end of outdoor heat converter between air vent or the air entry of compressor, effectively can mutually be switched between air vent and the air entry at compressor of the one end of outdoor heat converter by the switching effect of outdoor control valve, reach the purpose controlled.
Preferably, the other end of described indoor heat converter 7 is connected to the air entry of described compressor by described indoor control valve or is connected to the air vent of described compressor 1 by the switching of this coupled indoor control valve.This is also the preferred implementation realizing being connected to one end of indoor heat converter between air vent or the air entry of compressor, effectively can mutually switch between air vent and the air entry at compressor of the one end of indoor heat converter by controlling the switching effect of valve, reach the purpose controlled.
Preferably, described outdoor heat converter includes the first outdoor heat converter 31 and the second outdoor heat converter 32.This is the concrete preferably number of outdoor heat converter of at least two, i.e. two outdoor heat converters, can after one section of stream outdoor heat exchanger reaches releasing defrosting condition, by valve body action, it is switched to another section of stream outdoor heat exchanger to defrost, to reach whole stream outdoor heat exchangers are carried out segmentation, simultaneously do not defrosted, reach purpose and the effect of all defrostings.
As shown in Figure 1, preferably, described indoor control valve is at least one in described outdoor control valve, and it is cross valve, including the first cross valve 21A being all connected with the first outdoor heat converter 31 and the second cross valve 22A being all connected with described second outdoor heat converter 32, described first cross valve 21A or the second cross valve 22A is connected to described indoor heat converter 7.This is the concrete preferred structure controlling valve in stagewise heating and defrosting air conditioning system, i.e. first embodiment, especially structure and the embodiment of the first and second cross valves is included by cross valve, effectively each division system refrigerant line in air conditioning system can be controlled, thus reaching purpose and the effect of segmentation heating and defrosting targetedly.
Preferably, four links of described first cross valve 21A are respectively connecting to described first outdoor heat converter 31, described indoor heat converter 7, the suction end of described compressor 1 and exhaust end, and four links of described second cross valve 22A are respectively connecting to described second outdoor heat converter 32, described indoor heat converter 7, the suction end of described compressor 1 and exhaust end.This be the first cross valve and respective four links of the second cross valve difference connection trend, determining the switching by controlling the first and second cross valves and can effectively make to be formed between the parts being attached thereto corresponding annexation, this is also the key controlled.
Preferably, the pipeline being connected between described first cross valve 21 and described indoor heat converter 7 is additionally provided with the first electromagnetic valve 81；The pipeline being connected between described second cross valve 21A and described indoor heat converter 7 is additionally provided with the second electromagnetic valve 82.It is provided with the first electromagnetic valve by the pipeline that is connected between the first cross valve 21A and described indoor heat converter, effectively can control the break-make of this pipeline in a suitable case, to reach indoor heat exchanger to be heated and respective compartments external heat exchanger heating and defrosting, and prevent the generation of afoul situation between refrigerant flow path, reach the purpose and the effect that are precisely controlled.
As shown in Figure 2, preferably, described indoor control valve is the valve increased on the basis of described outdoor control valve, and it is three-way valve, including the first three-way valve 21B being connected with the first outdoor heat converter 31 and the second three-way valve 22B being connected with described second outdoor heat converter 32, and the 3rd three-way valve 23B being connected with described indoor heat converter 7.This is the concrete preferred structure controlling valve in stagewise heating and defrosting air conditioning system, i.e. the second embodiment, especially structure and the embodiment of first, second, and third three-way valve is included by three-way valve, effectively each division system refrigerant line in air conditioning system can be controlled, thus reaching purpose and the effect of segmentation heating and defrosting targetedly.
Preferably, three links of described first three-way valve 21B are respectively connecting to described first outdoor heat converter 31, the suction end of described compressor 1 and exhaust end, three links of described second three-way valve 22B are respectively connecting to described second outdoor heat converter 32, the suction end of described compressor 1 and exhaust end, and three links of described 3rd three-way valve 23B are respectively connecting to described indoor heat converter 7, the suction end of described compressor 1 and exhaust end.This be the first three-way valve, the second three-way valve and respective three links of the 3rd three-way valve difference connection trend, determining the switching by controlling first, second, and third three-way valve and can effectively make to be formed between the parts being attached thereto corresponding annexation, this is also the key controlled.
Preferably, the outdoor heat converter 31,32 described at least two and on the pipeline that is connected between described indoor heat converter 7 one end near each heat exchanger be provided with expansion valve respectively.Effectively the cold-producing medium after heat release can be carried out throttling expansion effect by arranging the structure of expansion valve in the above-mentioned position of pipeline, think that it enters next heat exchanger and is evaporated heat absorption offer condition, and it is respectively provided with the structure of expansion valve in one end of each heat exchanger, it is possible to control to carry out expansion to various different ruuning situations according to practical situation.Specifically, wherein it is being provided with indoor expansion valve 6 near indoor heat converter one end, is being provided with the first outdoor expansion valve 41 near first outdoor heat converter 31 one end, second outdoor heat converter 32 one end is being provided with the second outdoor expansion valve 42.
The present invention also provides for the control method of a kind of stagewise heating and defrosting, and it uses the air conditioning system of aforesaid stagewise heating and defrosting, by the guiding controlling valve in switched system, at least two outdoor heat converter is carried out stagewise heating and defrosting.
By the air conditioning system using aforesaid stagewise to defrost, the stream that outdoor heat exchanger can be divided into more than two sections is controlled adjustment, heating period, when system reaches defrosting condition, by valve body action, the steam that compressor is discharged, while supply indoor heating, carries out successively defrosting on two sections of streams, indoor heat can be caused during heating and defrosting to reduce efficiently against air conditioning system of the prior art, temperature reduces, and affects the technical problem of users'comfort；
And the liquid refrigerants become after defrosting throttles after mixing with the coolant becoming liquid after indoor heats, and in another section of outdoor heat converter heat exchange (heat absorption evaporation), it is ensured that compressor does not produce " liquid hammer " phenomenon during defrosting；
Can after at least one section of stream outdoor heat exchanger reaches releasing defrosting condition, by valve body action, it is switched at least another section of stream outdoor heat exchanger to defrost, to reach whole stream outdoor heat exchangers are carried out segmentation, simultaneously do not defrosted, reaches purpose and the effect of all defrostings；
After the outdoor heat exchanger of whole streams completes defrosting, also by valve body action, recover heating operation and continuously form the purpose to indoor heating, defrosting processing efficient, convenient, fast.
Preferably, when described outdoor control valve is cross valve, and when this cross valve includes the first cross valve 21A and the second cross valve 22A and system also includes the first and second electromagnetic valve 81,82, regulating the first cross valve 21A makes the port of export of compressor 1 and the first outdoor heat converter 31 be connected, regulate the second cross valve 22A makes the port of export of compressor 1 be connected with indoor heat converter 7 simultaneously, close the first electromagnetic valve 81, open the second electromagnetic valve 82 so that indoor heat converter 7 maintenance heats, the first outdoor heat converter 31 heating and defrosting.The control indoor heat exchanger that this is under the first detailed description of the invention while being cross valve (namely control valve) maintains and heats, and make the first outdoor heat converter carry out the concrete operation step of heating and defrosting, effectively make indoor heat converter 7 maintain heat, the first outdoor heat converter 31 heating and defrosting (the second outdoor heat converter 32 freezes and do not defrost).
Concrete operation step is as follows: the first cross valve 21A turns on D1 and C1, and the second cross valve 22A turns on D2 and E2, and the first electromagnetic valve 81 cuts out, and the second electromagnetic valve 82 is opened.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, is divided into two-way, and a road enters after the first outdoor heat converter 31 carries out hot gas defrosting through the first cross valve 21A and becomes middle temperature high-pressure liquid coolant, and now the first blower fan 91 is out of service；Another road the second cross valve 22A, cross inlet chamber inside heat exchanger 7 after gas side stop valve 52, being run by the 3rd blower fan 93 drives air to carry out heat exchange, become the liquid refrigerants of middle temperature high pressure, by liquid side stop valve 51, behind the middle temperature high-pressure liquid coolant interflow of the first outdoor heat converter 31 outflow, throttle at outdoor expansion valve 42, become low-temp low-pressure gas-liquid mixture.At outdoor heat converter 32, run by the second blower fan 92 after driving air to carry out heat exchange, return to gas-liquid separator 8 through the second cross valve 22A, recompress machine air entry.
Preferably, regulating the first cross valve 21A makes the port of export of compressor 1 be connected with indoor heat converter 7, regulate the second cross valve 22A makes the port of export of compressor 1 and the second outdoor heat converter 32 be connected simultaneously, open the first electromagnetic valve 81, close the second electromagnetic valve 82 so that indoor heat converter 7 maintenance heats, the second outdoor heat converter 32 heating and defrosting.The control indoor heat exchanger that this is under the first detailed description of the invention while being cross valve (namely control valve) maintains and heats, and make the second outdoor heat converter carry out the concrete operation step of heating and defrosting, effectively make indoor heat converter 7 maintain heat, the second outdoor heat converter 32 heating and defrosting (the first outdoor heat converter 31 freezes and do not defrost).
Concrete operation step is as follows: the first cross valve 21A turns on D1 and E1, and the second cross valve 22A turns on D2 and C2, and the first electromagnetic valve 81 is opened, and the second electromagnetic valve 82 cuts out.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, is divided into two-way, and a road becomes middle temperature high-pressure liquid coolant after the second cross valve 22A inlet chamber outer heat-exchanger 32 carries out hot gas defrosting, and now the second blower fan 92 is out of service；Another road the first cross valve 21A, cross inlet chamber inside heat exchanger 7 after gas side stop valve 52, being run by the 3rd blower fan 93 drives air to carry out heat exchange, become the liquid refrigerants of middle temperature high pressure, by liquid side stop valve 51, behind the middle temperature high-pressure liquid coolant interflow of the second outdoor heat converter 32 outflow, the first outdoor expansion valve 41 throttles, and becomes low-temp low-pressure gas-liquid mixture.At the first outdoor heat converter 31, after carrying out heat exchange by the first blower fan 91 air, return to gas-liquid separator 8 through cross valve 21A, recompress machine air entry.
Preferably, when described outdoor control valve is three-way valve, and this three-way valve is when including the first three-way valve 21B, the second three-way valve 22B and the three three-way valve 23B, regulating the first three-way valve 21B makes the port of export of compressor 1 and the first outdoor heat converter 31 be connected, and adjustment the second three-way valve 22B makes the entrance point of compressor 1 and the second outdoor heat converter 32 be connected, regulate the 3rd three-way valve 23B makes the port of export of compressor 1 be connected with indoor heat converter 7 simultaneously so that indoor heat converter 7 maintenance heats, the first outdoor heat converter 31 heating and defrosting.The control indoor heat exchanger that this is under the second detailed description of the invention while being three-way valve (namely control valve) maintains and heats, and make the first outdoor heat converter carry out the concrete operation step of heating and defrosting, effectively make indoor heat converter 7 maintain heat, the first outdoor heat converter 31 heating and defrosting (the second outdoor heat converter 32 freezes and do not defrost).
Concrete operation step is as follows: the first three-way valve 21B turns on D1 and C1, and the second three-way valve 22B turns on S2 and C2, and the 3rd three-way valve 23B turns on D3 and E3.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, is divided into two-way, and a road enters after the first outdoor heat converter 31 carries out hot gas defrosting through the first three-way valve 21B and becomes middle temperature high-pressure liquid coolant, and now the first blower fan 91 stops；Another Lu Jing tri-three-way valve 23B, cross inlet chamber inside heat exchanger 7 after gas side stop valve 52, being run by the 3rd blower fan 93 drives air to carry out heat exchange, become the liquid refrigerants of middle temperature high pressure, by liquid side stop valve 51, middle temperature high pressure coolant interflow with the first outdoor heat converter 31 flows out, throttles at the second outdoor expansion valve 42, becomes low-temp low-pressure gas-liquid mixture.At the second outdoor heat converter 32, run by the second blower fan 92 after driving air to carry out heat exchange, return to gas-liquid separator 8 through the second three-way valve 22B, then arrive compressor air suction mouth.
Preferably, regulating the first three-way valve 21B makes the entrance point of compressor 1 and the first outdoor heat converter 31 be connected, and adjustment the second three-way valve 22B makes the port of export of compressor 1 and the second outdoor heat converter 32 be connected, regulate the 3rd three-way valve 23B makes the port of export of compressor 1 be connected with indoor heat converter 7 simultaneously so that indoor heat converter 7 maintenance heats, the second outdoor heat converter 32 heating and defrosting.The control indoor heat exchanger that this is under the second detailed description of the invention while being three-way valve (namely control valve) maintains and heats, and make the second outdoor heat converter carry out the concrete operation step of heating and defrosting, effectively make indoor heat converter 7 maintain heat, the second outdoor heat converter 32 heating and defrosting (the first outdoor heat converter 31 freezes and do not defrost).
Concrete operation step is as follows: the first three-way valve 21B turns on S1 and C1, and the second three-way valve 22B turns on D2 and C2, and the 3rd three-way valve 23B turns on D3 and E3.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, is divided into two-way, and road the second three-way valve 22B enters the second outdoor heat converter 32, becomes middle temperature high-pressure liquid coolant after carrying out hot gas defrosting, and now the second blower fan 92 stops；Another road is through three-way valve 23B, cross inlet chamber inside heat exchanger 7 after gas side stop valve 52, being run by the 3rd blower fan 93 drives air to carry out heat exchange, become the liquid refrigerants of middle temperature high pressure, by liquid side stop valve 51, middle temperature high pressure coolant interflow with outdoor heat converter 32 flows out, throttles at the first outdoor expansion valve 41, becomes low-temp low-pressure gas-liquid mixture.At the first outdoor heat converter 31, run by the first blower fan 91 after driving air to carry out heat exchange, through the first three-way valve 21B to gas-liquid separator 8, then arrive compressor air suction mouth.
Operation principle and the preferred embodiment of the present invention are described below
First embodiment
As it is shown in figure 1, it controls structure and the embodiment that valve is cross valve
[refrigeration mode]: the first cross valve 21A turns on D1 and C1, the second cross valve 22A turns on D2 and C2, and the first electromagnetic valve 81 and the second electromagnetic valve 82 are opened.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, through the first cross valve 21A and the second cross valve 22A inlet chamber outer heat-exchanger 31 and 32, being run by first, second blower fan 91 and 92 drives air to condense, and becomes the liquid refrigerants of High Temperature High Pressure.After condensate outlet parallel connection, it is connected with liquid side stop valve 51, expansion valve 6 throttling of the indoor setting of coolant process becomes the gas-liquid mixture of low-temp low-pressure, at indoor heat converter 7, being run by the 3rd blower fan 93 drives air to carry out heat exchange, after gas side stop valve 52, is divided into two-way, one tunnel is after the first electromagnetic valve 81, and the E1 → S1 crossing the first cross valve 21A returns to compressor air suction mouth；Another road is after the second electromagnetic valve 82, and the E2 → S2 crossing the second cross valve 22A returns to gas-liquid separator 8, then arrives compressor air suction mouth.
[heating mode]: the first cross valve 21A turns on D1 and E1, the second cross valve 22A turns on D2 and E2, and the first electromagnetic valve 81 and the second electromagnetic valve 82 are opened.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, converge after crossing first, second cross valve 21A and 22A, through gas side stop valve 52 inlet chamber inside heat exchanger 7, run the liquid refrigerants driving air setting to become High Temperature High Pressure by the 3rd blower fan 93.After above-mentioned coolant parallel connection, it is connected with liquid side stop valve 51, coolant is divided into two-way, one tunnel the first outdoor expansion valve 41 throttling becomes the gas-liquid mixture of low-temp low-pressure, at outdoor heat converter 31, run by the first blower fan 91 after driving air to carry out heat exchange, return to compressor air suction mouth through the C1 → S1 of the first cross valve 21A；Another road coolant becomes low-temp low-pressure gas-liquid mixture after the second outdoor expansion valve 42 throttling, at outdoor heat converter 32, run by the second blower fan 92 after driving air to carry out heat exchange, return to gas-liquid separator 8 through the C2 → S2 of the second cross valve 22A, recompress machine air entry.
[heating mode outdoor heat converter 31 Defrost operation] first cross valve 21A turns on D1 and C1, and the second cross valve 22A turns on D2 and E2, and the first electromagnetic valve 81 cuts out, and the second electromagnetic valve 82 is opened.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, is divided into two-way, and a road becomes middle temperature high-pressure liquid coolant after the first cross valve 21A inlet chamber outer heat-exchanger 31 carries out hot gas defrosting, and now the first blower fan 91 is out of service；Another road the second cross valve 22A, cross inlet chamber inside heat exchanger 7 after gas side stop valve 52, being run by the 3rd blower fan 93 drives air to carry out heat exchange, become the liquid refrigerants of middle temperature high pressure, by liquid side stop valve 51, behind the middle temperature high-pressure liquid coolant interflow of the first outdoor heat converter 31 outflow, throttle at the second outdoor expansion valve 42, become low-temp low-pressure gas-liquid mixture.At the second outdoor heat converter 32, run by the second blower fan 92 after driving air to carry out heat exchange, return to gas-liquid separator 8 through the second cross valve 22A, recompress machine air entry.
[heating mode outdoor heat converter 32 Defrost operation] first cross valve 21A turns on D1 and E1, and the second cross valve 22A turns on D2 and C2, and the first electromagnetic valve 81 is opened, and the second electromagnetic valve 82 cuts out.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, is divided into two-way, and a road enters after the second outdoor heat converter 32 carries out hot gas defrosting through the second cross valve 22A and becomes middle temperature high-pressure liquid coolant, and now the second blower fan 92 is out of service；Another road the first cross valve 21A, cross inlet chamber inside heat exchanger 7 after gas side stop valve 52, being run by the 3rd blower fan 93 drives air to carry out heat exchange, become the liquid refrigerants of middle temperature high pressure, by liquid side stop valve 51, behind the middle temperature high-pressure liquid coolant interflow of the second outdoor heat converter 32 outflow, the first outdoor expansion valve 41 throttles, and becomes low-temp low-pressure gas-liquid mixture.At the first outdoor heat converter 31, after carrying out heat exchange by the first blower fan 91 air, return to gas-liquid separator 8 through the first cross valve 21A, recompress machine air entry.
Second embodiment
As in figure 2 it is shown, it controls structure and the embodiment that valve is three-way valve
[refrigeration mode]: the first three-way valve 21B turns on D1 and C1, the second three-way valve 22B turns on D2 and C2, and the 3rd three-way valve 23B turns on S3 and E3.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, first, second outdoor heat converter 31 and 32 is entered through first, second three-way valve 21B and 22B, being run by first, second blower fan 91 and 92 drives air to condense, and becomes the liquid refrigerants of middle temperature high pressure.It is connected with liquid side stop valve 51 after outdoor heat converter exports parallel connection, expansion valve 6 throttling of the indoor setting of coolant process becomes the gas-liquid mixture of low-temp low-pressure, at indoor heat converter 7, drive air to carry out heat exchange by the 3rd blower fan 93 operation and become the gaseous coolant of low-temp low-pressure, after gas side stop valve 52, through the 3rd three-way valve 23B to gas-liquid separator 8, then arrive compressor air suction mouth.
[heating mode]: the first three-way valve 21B turns on S1 and C1, the second three-way valve 22B turns on S2 and C2, and the 3rd three-way valve 23B turns on D3 and E3.The coolant of low-temp low-pressure becomes high temperature and high pressure gas from compressor 1 after compressing, cross the 3rd three-way valve 23B, through gas side stop valve 52 inlet chamber inside heat exchanger 7, is run the liquid refrigerants driving air setting Cheng Zhongwen high pressure by the 3rd blower fan 93.It is divided into two-way after being connected with liquid side stop valve 51, first outdoor expansion valve 41 throttling of the one road outdoor setting of coolant process becomes the gas-liquid mixture of low-temp low-pressure, at the first outdoor heat converter 31, run by the first blower fan 91 after driving air to carry out heat exchange, return to compressor air suction mouth through the first three-way valve 21B；Second outdoor expansion valve 42 throttling of another road outdoor setting of coolant process becomes the gas-liquid mixture of low-temp low-pressure, at the second outdoor heat converter 32, run by the second blower fan 92 after driving air to carry out heat exchange, through the second three-way valve 22B to gas-liquid separator 8, then arrive compressor air suction mouth.
[heating mode outdoor heat converter 31 Defrost operation] first three-way valve 21B turns on D1 and C1, and the second three-way valve 22B turns on S2 and C2, and the 3rd three-way valve 23B turns on D3 and E3.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, is divided into two-way, and a road enters after the first outdoor heat converter 31 carries out hot gas defrosting through the first three-way valve 21B and becomes middle temperature high-pressure liquid coolant, and now the first blower fan 91 stops；Another Lu Jing tri-three-way valve 23B, cross inlet chamber inside heat exchanger 7 after gas side stop valve 52, being run by the 3rd blower fan 93 drives air to carry out heat exchange, become the liquid refrigerants of middle temperature high pressure, by liquid side stop valve 51, middle temperature high pressure coolant interflow with the first outdoor heat converter 31 flows out, throttles at the first outdoor expansion valve 42, becomes low-temp low-pressure gas-liquid mixture.At the second outdoor heat converter 32, run by the second blower fan 92 after driving air to carry out heat exchange, return to gas-liquid separator 8 through the second three-way valve 22B, then arrive compressor air suction mouth.
[heating mode outdoor heat converter 32 Defrost operation] first three-way valve 21B turns on S1 and C1, and the second three-way valve 22B turns on D2 and C2, and the 3rd three-way valve 23B turns on D3 and E3.The coolant of low-temp low-pressure becomes high temperature and high pressure gas after compressing from compressor 1, is divided into two-way, and road the second three-way valve 22B enters the second outdoor heat converter 32, becomes middle temperature high-pressure liquid coolant after carrying out hot gas defrosting, and now the second blower fan 92 stops；Another Lu Jing tri-three-way valve 23B, cross inlet chamber inside heat exchanger 7 after gas side stop valve 52, being run by the 3rd blower fan 93 drives air to carry out heat exchange, become the liquid refrigerants of middle temperature high pressure, by liquid side stop valve 51, middle temperature high pressure coolant interflow with the second outdoor heat converter 32 flows out, throttles at the first outdoor expansion valve 41, becomes low-temp low-pressure gas-liquid mixture.At the first outdoor heat converter 31, run by the first blower fan 91 after driving air to carry out heat exchange, through the first three-way valve 21B to gas-liquid separator 8, then arrive compressor air suction mouth.
Those skilled in the art will readily understand, under the premise do not conflicted, above-mentioned each advantageous manner can freely combine, superposition.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention.
Claims (15)
1. the air conditioning system of a stagewise heating and defrosting, it is characterized in that: include compressor (1), indoor heat converter (7), at least two outdoor heat converter (31, 32), one end of each described outdoor heat converter is connected to air vent or the air entry of described compressor (1) respectively through outdoor control valve, outdoor heat converter (31 described at least two, 32) the other end is connected to one end of described indoor heat converter (7) after converging, the other end of described indoor heat converter (7) is connected to air entry or the air vent of described compressor by indoor control valve.
2. the air conditioning system of stagewise heating and defrosting according to claim 1, it is characterised in that: one end of each described outdoor heat converter is connected to the air vent of described compressor (1) respectively through an outdoor control valve or is connected to the air entry of described compressor (1) by the switching of this outdoor control valve.
3. the air conditioning system according to the stagewise heating and defrosting one of claim 1-2 Suo Shu, it is characterised in that: the other end of described indoor heat converter (7) is connected to the air entry of described compressor by described indoor control valve or is connected to the air vent of described compressor (1) by the switching of this coupled indoor control valve.
4. the air conditioning system according to the stagewise heating and defrosting one of claim 1-3 Suo Shu, it is characterised in that: described outdoor heat converter includes the first outdoor heat converter (31) and the second outdoor heat converter (32).
5. the air conditioning system of stagewise heating and defrosting according to claim 4, it is characterized in that: described indoor control valve is at least one in described outdoor control valve, and it is cross valve, including the first cross valve (21A) being connected with the first outdoor heat converter (31) and the second cross valve (22A) being connected with described second outdoor heat converter (32), described first cross valve (21A) or the second cross valve (22A) are connected to described indoor heat converter (7).
6. the air conditioning system of stagewise heating and defrosting according to claim 5, it is characterized in that: four links of described first cross valve (21A) are respectively connecting to described first outdoor heat converter (31), described indoor heat converter (7), the suction end of described compressor (1) and exhaust end, four links of described second cross valve (22A) are respectively connecting to described second outdoor heat converter (32), described indoor heat converter (7), the suction end of described compressor (1) and exhaust end.
7. the air conditioning system of stagewise heating and defrosting according to claim 6, it is characterised in that: the pipeline being connected between described first cross valve (21A) and described indoor heat converter (7) is additionally provided with the first electromagnetic valve (81)；The pipeline being connected between described second cross valve (22A) and described indoor heat converter (7) is additionally provided with the second electromagnetic valve (82).
8. the air conditioning system of stagewise heating and defrosting according to claim 4, it is characterized in that: described indoor control valve is the valve increased on the basis of described outdoor control valve, and it is three-way valve, including the first three-way valve (21B) being connected with the first outdoor heat converter (31) and the second three-way valve (22B) being connected with described second outdoor heat converter (32), and the 3rd three-way valve (23B) being connected with described indoor heat converter (7).
9. the air conditioning system of stagewise heating and defrosting according to claim 8, it is characterized in that: three links of described first three-way valve (21B) are respectively connecting to described first outdoor heat converter (31), the suction end of described compressor (1) and exhaust end, three links of described second three-way valve (22B) are respectively connecting to described second outdoor heat converter (32), the suction end of described compressor (1) and exhaust end, three links of described 3rd three-way valve (23B) are respectively connecting to described indoor heat converter (7), the suction end of described compressor (1) and exhaust end.
10. the air conditioning system according to the stagewise heating and defrosting one of claim 1-9 Suo Shu, it is characterised in that: on the pipeline being connected between outdoor heat converter (31,32) and the described indoor heat converter (7) described at least two, the one end near each heat exchanger is provided with expansion valve respectively.
11. the control method of a stagewise heating and defrosting, it is characterized in that: use the air conditioning system of stagewise heating and defrosting described for one of claim 1-10, by the guiding controlling valve in switched system, at least two outdoor heat converter is carried out stagewise heating and defrosting.
12. the control method of stagewise heating and defrosting according to claim 11, it is characterized in that: when described outdoor control valve is cross valve, and this cross valve includes the first cross valve (21A) and the second cross valve (22A), and system also includes the first and second electromagnetic valves (81, 82) time, regulating the first cross valve (21A) makes the port of export of compressor (1) and the first outdoor heat converter (31) be connected, regulate the second cross valve (22A) makes the port of export of compressor (1) be connected with indoor heat converter (7) simultaneously, close the first electromagnetic valve (81), open the second electromagnetic valve (82), indoor heat converter (7) is maintained heat, first outdoor heat converter (31) heating and defrosting.
13. the control method of stagewise heating and defrosting according to claim 12, it is characterized in that: regulate the first cross valve (21A) and the port of export of compressor (1) is connected with indoor heat converter (7), regulate the second cross valve (22A) makes the port of export of compressor (1) and the second outdoor heat converter (32) be connected simultaneously, open the first electromagnetic valve (81), close the second electromagnetic valve (82) so that indoor heat converter (7) maintenance heats, the second outdoor heat converter (32) heating and defrosting.
14. the control method of stagewise heating and defrosting according to claim 11, it is characterized in that: when described outdoor control valve is three-way valve, and this three-way valve includes the first three-way valve (21B), when the second three-way valve (22B) and the 3rd three-way valve (23B), regulating the first three-way valve (21B) makes the port of export of compressor (1) and the first outdoor heat converter (31) be connected, and adjustment the second three-way valve (22B) makes the entrance point of compressor (1) and the second outdoor heat converter (32) be connected, regulate the 3rd three-way valve (23B) makes the port of export of compressor (1) be connected with indoor heat converter (7) simultaneously, indoor heat converter (7) is maintained heat, first outdoor heat converter (31) heating and defrosting.
15. the control method of stagewise heating and defrosting according to claim 14, it is characterized in that: regulate the first three-way valve (21B) and the entrance point of compressor (1) and the first outdoor heat converter (31) are connected, and adjustment the second three-way valve (22B) makes the port of export of compressor (1) and the second outdoor heat converter (32) be connected, regulate the 3rd three-way valve (23B) makes the port of export of compressor (1) be connected with indoor heat converter (7) simultaneously, indoor heat converter (7) is maintained heat, second outdoor heat converter (32) heating and defrosting.
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| CN201610205985.0A CN105758075A (en) | 2016-04-01 | 2016-04-01 | Sectional type heating and defrosting air-conditioning system and heating and defrosting control method implemented by same |
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Application publication date: 20160713 |
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