CN104110776B - Air conditioning system and control method thereof - Google Patents

Air conditioning system and control method thereof Download PDF

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Publication number
CN104110776B
CN104110776B CN201310456409.XA CN201310456409A CN104110776B CN 104110776 B CN104110776 B CN 104110776B CN 201310456409 A CN201310456409 A CN 201310456409A CN 104110776 B CN104110776 B CN 104110776B
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conditioning system
air conditioning
heat exchanger
temperature sensor
temperature
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CN104110776A (en
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屈金祥
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Midea Group Co Ltd
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Midea Group Co Ltd
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Abstract

The invention belongs to the technical field of air conditioning, and particularly relates to an air conditioning system and a control method thereof. The air conditioning system comprises an electric control board, an indoor heat exchanger, an outdoor heat exchanger, an outdoor fan, a four-way valve, a compressor and the like, wherein the indoor heat exchanger, the outdoor heat exchanger, the outdoor fan, the four-way valve, the compressor and the like are connected to be a closed system through a pipeline. As an improvement, the air conditioning system further comprises an electromagnetic valve device for adjusting and controlling flowing direction of a refrigerant during refrigerating or heating, at least one refrigerant heating device and a temperature sensor unit. According to the air conditioning system and the control method, when the air conditioning system is in actual use, heat loss of the four-way valve can be lowered when a heating mode is started, so that heating capacity of the air conditioning system is improved effectively, exhaust temperature is quickly increased, temperature of an air outlet of an air conditioner and temperature of a room are enabled to quickly reach maximum values, heating efficiency of the air conditioning system is improved, the defect that an existing air conditioner is low in heating speed and poor in heating effect is overcome, stability of the temperature of the room is guaranteed, and comfortability of a user when using the air conditioning system during heating is improved.

Description

A kind of air conditioning system and its control method
Technical field
The invention belongs to air-conditioning technique field, more particularly, to a kind of air conditioning system and its control method.
Background technology
Air conditioner in the market is complained by consumer because of " heating slow, effect is poor ", and this has become common sky Adjust the subject matter being denounced by consumer.In fact, heating of air-conditioning is slow, comfort level and the user in room are really had a strong impact on Experience sense be subject to.The air outlet temperature of air-conditioner and room temperature is how allowed to reach maximum temperature and become one within the shortest time Problem demanding prompt solution.
Traditional heat pump type air conditioner all employs four-way valve device substantially, and by adopting cross valve, air-conditioning can be freely Switch between refrigeration mode and heating mode, but high-temperature gas and cryogenic gas flow through from cross valve, due to two simultaneously There is the larger temperature difference between person, will large losses heat, reduce the efficiency of air conditioning system, heating efficiency is poor.Above-mentioned Technical problem is also that air conditioning system heats a slower bottleneck.
Content of the invention
In view of this, the purpose of the present invention first consists in a kind of air conditioning system of offer, is heated with solving existing air conditioning system During operation, heat loss is serious, heat the technical problem that speed is slow, efficiency is low, improves the delivery temperature of air-conditioner air outlet, accelerates system The speed of heat is it is ensured that the comfortableness that uses of the stability of room temperature and user.
To achieve these goals, the air conditioning system that the present invention provides, connects into closing including electric-controlled plate with by pipeline The indoor heat exchanger of system, indoor fan, throttling arrangement, outdoor heat exchanger, outdoor fan, cross valve and compressor, wherein, four Port valve first interface is connected with the exhaustor of compressor, and cross valve second interface is connected with outdoor heat exchanger, and throttling arrangement connects Indoors between heat exchanger and outdoor heat exchanger, cross valve the 3rd interface connects indoor heat exchanger, and cross valve the 4th interface connects compression The suction end of machine, as improvement, described air conditioning system also includes:
It is arranged on described cross valve first interface and the 3rd interface, under the control of described electric-controlled plate to described air-conditioning system The electromagnetic valve device that when controlling is cold or heats, the flow direction of cold-producing medium is regulated and controled;
It is arranged on the exhaustor of described compressor or indoor heat exchanger is connected with electromagnetic valve device on pipeline at least One coolant heater;And
Obtain temperature data and be transferred to the temperature sensor unit of described electric-controlled plate, described temperature sensor unit includes Indoor environment temperature sensor, indoor heat exchanger temperature sensor, outdoor environment temperature sensor and be located at compressor air-discharging Manage the first exhaust temperature sensor on pipeline and cross valve first interface between and be located at indoor heat exchanger and cross valve the 3rd Second exhaust temperature sensor on pipeline between interface.
On the other hand, the present invention also aims to providing a kind of control method based on above-mentioned air-conditioning, walk including following Rapid:
Start after air conditioning system receive user start-up command;
Temperature sensor unit is detected: if all temperature sensors are all normal, enter step c;If having any One temperature sensor is abnormal, then control coolant heater to be closed;
The operational mode of detection air conditioning system: if air conditioning system is run in a heating mode, enter step d;If air-conditioning System operation under non-heating mode, then controls coolant heater to be closed;
The switch of electromagnetic valve device is regulated and controled, controls the heat loss flowing to reduce cross valve of cold-producing medium;
Obtain the temperature data that feeds back respectively of temperature sensor unit and be compared: if indoor environment temperature t2 be less than or Equal to default indoor environment temperature decision content t2 and outdoor environment temperature t3 sentences less than or equal to default outdoor environment temperature Definite value t3 and first exhaust temperature sensor temperature t4 are less than or equal to default first exhaust temperature sensor temperature decision content T4 and second exhaust temperature sensor temperature t5 are less than or equal to default second exhaust temperature sensor temperature decision content t5, Enter step f;Coolant heater is otherwise controlled to be closed;
Control coolant heater startup optimization and continue to obtain the temperature data that temperature sensor unit feeds back respectively;
If indoor heat exchanger temperature t1 is less than or equal to default indoor heat exchanger temperature decision content t1 or indoor environment temperature Degree t2 is less than or equal to default indoor environment temperature decision content t2, or first exhaust temperature sensor temperature t4 is less than or equal to T4-dt4 or second exhaust temperature sensor temperature t5 are less than or equal to t5-dt5, and return to step f, wherein dt4, dt5 are respectively Default coolant heater temperature corrected value;Otherwise enter step h;
If first exhaust temperature sensor temperature t4 is more than t4-dt4 or second exhaust temperature sensor temperature t5 is more than T5-dt5, controls coolant heater stop to run;Otherwise return to step f.
The air conditioning system providing according to embodiments of the present invention and its control method, in actual use, unlatching heats The heat waste of cross valve during pattern, can be reduced, effectively improve the heating capacity of air conditioning system, quickly improve delivery temperature, make Have leisure and recall draught temperature and room temperature is rapidly achieved maximum, improve the heating efficiency of air conditioning system, overcome air-conditioning " system Thermal velocity is slow, and heating effect is poor " the drawbacks of it is ensured that the stability of room temperature, enhance the comfortable of user's use when heating Degree.
Brief description
Fig. 1 is the structural representation of the air conditioning system that first embodiment of the invention provides;
Fig. 2 is the structural representation of the air conditioning system that second embodiment of the invention provides;
Fig. 3 is the structural representation of the air conditioning system that third embodiment of the invention provides;
Fig. 4 is the structural representation of the air conditioning system that fourth embodiment of the invention provides;
Fig. 5 is the flowchart of the air conditioner system control method that fifth embodiment of the invention provides;
Fig. 6 is the flowchart of the air conditioner system control method that sixth embodiment of the invention provides.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and It is not used in the restriction present invention.
The present invention provide air conditioning system, including electric-controlled plate and by pipeline connect into closed system indoor heat exchanger, Indoor fan, throttling arrangement, outdoor heat exchanger, outdoor fan, cross valve and compressor, wherein, cross valve first interface and pressure The exhaustor of contracting machine connects, and cross valve second interface is connected with outdoor heat exchanger, and throttling arrangement is connected to indoor heat exchanger and room Between external heat exchanger, cross valve the 3rd interface connects indoor heat exchanger, and cross valve the 4th interface connects the suction end of compressor, as changing Enter, described air conditioning system also includes:
Be arranged on cross valve first interface and the 3rd interface, under the control of electric-controlled plate to described air conditioning system refrigeration or The electromagnetic valve device that when heating, the flow direction of cold-producing medium is regulated and controled;
Be arranged on the exhaustor of compressor or indoor heat exchanger is connected on pipeline with electromagnetic valve device at least one Coolant heater;And
Obtain temperature data and be transferred to the temperature sensor unit of electric-controlled plate, described temperature sensor unit includes interior Environment temperature sensor, indoor heat exchanger temperature sensor, outdoor environment temperature sensor and be located at compressor exhaust pipe with First exhaust temperature sensor on pipeline between cross valve first interface and be located at indoor heat exchanger and cross valve the 3rd interface Between second exhaust temperature sensor on pipeline.
Embodiment one
Fig. 1 is the structural representation of the air conditioning system that first embodiment of the invention provides;For convenience of description, illustrate only Part related to the present embodiment, as shown in the figure:
A kind of air conditioning system, connects into indoor heat exchanger 101, the room of closed system including electric-controlled plate 301 with by pipeline Internal fan 102, throttling arrangement 103, outdoor heat exchanger 104, outdoor fan 105, cross valve 106 and compressor 107, wherein, four Port valve 106 first interface e1 is connected with the exhaustor of compressor 107, cross valve 106 second interface e2 and outdoor heat exchanger 104 phase Connect, throttling arrangement 103 is connected between indoor heat exchanger 101 and outdoor heat exchanger 104, cross valve 106 the 3rd interface e3 connects room Interior heat exchanger 101, cross valve 106 the 4th interface e4 connects the suction end of compressor 107;
In the present embodiment, the electromagnetic valve device as improvement part includes the first electromagnetic valve 410 and check valve 411;Single It is arranged on to valve 411 on the connecting pipe of cross valve 106 the 3rd interface e3 and indoor heat exchanger 101, the of the first electromagnetic valve 410 One end is connected on the pipeline between check valve 411 and indoor heat exchanger 101, and the second end of the first electromagnetic valve 410 is connected to four On pipeline between port valve 106 first interface e1 and compressor 107 exhaustor.
On the other hand, the air conditioning system that the present embodiment one provides also includes one and is arranged on compressor 107 exhaustor Coolant heater 108 and by indoor environment temperature sensor 201, indoor heat exchanger temperature sensor 202, outdoor environment temperature The temperature sensor unit that degree sensor 203, first exhaust temperature sensor 204, second exhaust temperature sensor 205 are constituted, Wherein, after first exhaust temperature sensor 204 is arranged on coolant heater 108, the first electromagnetic valve 410 and cross valve 106 On pipeline before first interface e1, second exhaust temperature sensor 205 be arranged on check valve 411 and indoor heat exchanger 101 it Between pipeline on.
Further, check valve 411 can only one-way conduction, and the first electromagnetic valve 410 cuts out under the regulation and control of electric-controlled plate 301 Or open, control the flow direction of cold-producing medium, can quickly improve delivery temperature when heating.In specific work process:
During refrigeration, the first interface e1 of cross valve 106 connects with second interface e2, the 3rd interface e3 and the 4th interface e4 connects Logical, dotted arrow sensing is the flow direction of cold-producing medium, check valve 411 one-way conduction in direction as shown;That is, in refrigeration Under pattern, electric-controlled plate 301 controls the first electromagnetic valve 410 to close, and coolant heater 108 is not also opened.
When heating, cross valve 106 first interface e1 and the 3rd interface e3 connects, and second interface e2 and the 4th interface e4 connect Logical, electric-controlled plate 301 controls the first electromagnetic valve 410 to open, and solid arrow sensing is the flow direction of cold-producing medium when heating.Heat at this Under pattern, the first electromagnetic valve 410 is opened so that cold-producing medium directly heats dress from the exhaustor high-pressure side of compressor 107 through coolant Put 108 inflow indoor heat exchangers 101;The one-way conduction effect of check valve 411 makes cold-producing medium directly from room in cyclic process External heat exchanger 104 has arrived compressor 107 suction end through cross valve second interface e2, the 4th interface e4, decreases cross valve 106 Heat loss, quickly can improve delivery temperature so that air-conditioner air outlet temperature and room temperature are rapidly achieved maximum, improve The heating efficiency of air conditioning system.
Embodiment two
Fig. 2 is the structural representation of the air conditioning system that second embodiment of the invention provides;For convenience of description, illustrate only Part related to the present embodiment, as shown in the figure:
A kind of air conditioning system, connects into indoor heat exchanger 101, the room of closed system including electric-controlled plate 301 with by pipeline Internal fan 102, throttling arrangement 103, outdoor heat exchanger 104, outdoor fan 105, cross valve 106 and compressor 107, wherein, four Port valve 106 first interface e1 is connected with the exhaustor of compressor 107, cross valve 106 second interface e2 and outdoor heat exchanger 104 phase Connect, throttling arrangement 103 is connected between indoor heat exchanger 101 and outdoor heat exchanger 104, cross valve 106 the 3rd interface e3 connects room Interior heat exchanger 101, cross valve 106 the 4th interface e4 connects the suction end of compressor 107;
In the present embodiment two, the electromagnetic valve device as improvement part is identical with embodiment one, also includes the first electromagnetism Valve 410 and check valve 411;Check valve 411 is arranged on the connecting pipe of cross valve 106 the 3rd interface e3 and indoor heat exchanger 101 On, the first end of the first electromagnetic valve 410 is connected on the pipeline between check valve 411 and indoor heat exchanger 101, the first electromagnetic valve 410 the second end is connected on the pipeline between cross valve 106 first interface e1 and compressor 107 exhaustor.
On the other hand, also only include a coolant heater in the air conditioning system that the present embodiment two provides, this coolant adds Thermal 108 is disposed in the interior on the pipeline that heat exchanger 101 is connected with check valve 411;Temperature sensor unit is also by indoor ring Border temperature sensor 201, indoor heat exchanger temperature sensor 202, outdoor environment temperature sensor 203, first exhaust temperature pass Sensor 204 and second exhaust temperature sensor 205 constitute, and simply correspondingly, first exhaust temperature sensor 204 is arranged on On pipeline after compressor 107 exhaustor, before the first electromagnetic valve 410 and cross valve 106 first interface e1, second row temperature Degree sensor 205 is arranged on the pipeline between coolant heater 108 and indoor heat exchanger 101.
Similarly, check valve 411 can only one-way conduction, and the first electromagnetic valve 410 cuts out under the regulation and control of electric-controlled plate 301 or Open, control the flow direction of cold-producing medium, can quickly improve delivery temperature when heating.In specific work process:
During refrigeration, the first interface e1 of cross valve 106 connects with second interface e2, the 3rd interface e3 and the 4th interface e4 connects Logical, dotted arrow sensing is the flow direction of cold-producing medium, check valve 411 one-way conduction in direction as shown;I.e. in cooling mode, Electric-controlled plate 301 controls the first electromagnetic valve 410 to close, and coolant heater 108 is not also opened.
When heating, cross valve 106 first interface e1 and the 3rd interface e3 connects, and second interface e2 and the 4th interface e4 connect Logical, electric-controlled plate 301 controls the first electromagnetic valve 410 to open, and solid arrow sensing is the flow direction of cold-producing medium when heating.Heat at this Under pattern, the first electromagnetic valve 410 is opened so that cold-producing medium directly heats dress from the exhaustor high-pressure side of compressor 107 through coolant Put 108 inflow indoor heat exchangers 101;The one-way conduction effect of check valve 411 makes cold-producing medium directly from room in cyclic process External heat exchanger 104 has arrived compressor 107 suction end through cross valve second interface e2, the 4th interface e4, decreases cross valve 106 Heat loss, quickly can improve delivery temperature so that air-conditioner air outlet temperature and room temperature are rapidly achieved maximum, improve The heating efficiency of air conditioning system.
Embodiment three
Fig. 3 is the structural representation of the air conditioning system that third embodiment of the invention provides;For convenience of description, illustrate only Part related to the present embodiment, as shown in the figure:
A kind of air conditioning system, connects into indoor heat exchanger 101, the room of closed system including electric-controlled plate 301 with by pipeline Internal fan 102, throttling arrangement 103, outdoor heat exchanger 104, outdoor fan 105, cross valve 106 and compressor 107, above-mentioned zero The annexation of part and embodiment one, embodiment two all same, here just repeats no more;
In the present embodiment three, the electromagnetic valve device as improvement part includes the 3rd electromagnetic valve 412 and the 4th electromagnetic valve 413;4th electromagnetic valve 413 is connected to the pipeline between cross valve 106 first interface e1 and compressor 107 exhaustor high-pressure side On, the first end of the 3rd electromagnetic valve 412 is connected on the pipeline between cross valve 106 the 3rd interface e3 and indoor heat exchanger 101, Second end of the 3rd electromagnetic valve 412 is connected on the pipeline between the 4th electromagnetic valve 413 and compressor 107 exhaustor high-pressure side.
Further, the air conditioning system that the present embodiment three provides also includes one and is arranged on compressor 107 exhaustor and the Coolant heater 108 between four electromagnetic valves 413, and passed by indoor environment temperature sensor 201, indoor heat exchanger temperature Sensor 202, outdoor environment temperature sensor 203, first exhaust temperature sensor 204, second exhaust temperature sensor 205 are constituted Temperature sensor unit, wherein, first exhaust temperature sensor 204 is arranged on coolant heater 108 and the 3rd electromagnetic valve 412nd, on the pipeline before the 4th electromagnetic valve 413, second exhaust temperature sensor 205 is arranged on the 3rd electromagnetic valve 412 and interior On pipeline between heat exchanger 101.3rd electromagnetic valve 412 and the 4th electromagnetic valve 413 are closed under the regulation and control of electric-controlled plate 301 or are beaten Open, control the flow direction of cold-producing medium, can quickly improve delivery temperature when heating.
In specific work process:
During refrigeration, the first interface e1 of cross valve 106 connects with second interface e2, the 3rd interface e3 and the 4th interface e4 connects Logical, dotted arrow sensing is the flow direction of cold-producing medium;That is, in cooling mode, electric-controlled plate 301 controls the 3rd electromagnetic valve 412 close, the 4th electromagnetic valve 413 is opened, and coolant heater 108 is not opened.
When heating, cross valve 106 first interface e1 and the 3rd interface e3 connects, and second interface e2 and the 4th interface e4 connect Logical, the 3rd electromagnetic valve 412 is opened, the 4th electromagnetic valve 413 cuts out for electric-controlled plate 301 control, and it is the when system that heats that solid arrow points to The flow direction of cryogen.Under this heating mode, the 3rd electromagnetic valve 412 is opened so that cold-producing medium is directly from the exhaustor of compressor 107 High-pressure side flows into indoor heat exchanger 101 through coolant heater 108;4th electromagnetic valve 413 is cut out so that cold-producing medium is being circulated throughout In journey directly from outdoor heat exchanger 104 through cross valve second interface e2, the 4th interface e4 to compressor 107 suction end, reduce The heat loss of cross valve 106, quickly can improve delivery temperature so that air-conditioner air outlet temperature and room temperature are rapidly achieved Maximum, improves the heating efficiency of air conditioning system.
Example IV
Fig. 4 is the structural representation of the air conditioning system that fourth embodiment of the invention provides;For convenience of description, illustrate only Part related to the present embodiment, as shown in the figure:
A kind of air conditioning system, connects into indoor heat exchanger 101, the room of closed system including electric-controlled plate 301 with by pipeline Internal fan 102, throttling arrangement 103, outdoor heat exchanger 104, outdoor fan 105, cross valve 106 and compressor 107, above-mentioned routine The annexation of parts is identical with embodiment three, and here just repeats no more;
In the present embodiment four, the electromagnetic valve device as improvement part is also identical with the 3rd embodiment shown in Fig. 3, bag Include the 3rd electromagnetic valve 412 and the 4th electromagnetic valve 413;4th electromagnetic valve 413 is connected to cross valve 106 first interface e1 and compressor On pipeline between 107 exhaustor high-pressure sides, the first end of the 3rd electromagnetic valve 412 be connected to cross valve 106 the 3rd interface e3 with On pipeline between indoor heat exchanger 101, the second end of the 3rd electromagnetic valve 412 is connected to the 4th electromagnetic valve 413 and compressor 107 On pipeline between exhaustor high-pressure side.
Further, in the air conditioning system that the present embodiment four provides, also include one be disposed in the interior heat exchanger 101 with The coolant heater 108 on pipeline that 3rd electromagnetic valve 412 is connected;Temperature sensor unit is also sensed by indoor environment temperature Device 201, indoor heat exchanger temperature sensor 202, outdoor environment temperature sensor 203, first exhaust temperature sensor 204 and Two exhaust gas temperature sensors 205 are constituted, and correspondingly, first exhaust temperature sensor 204 is arranged on compressor 107 exhaustor Afterwards, on the pipeline before the 3rd electromagnetic valve 412 and the 4th electromagnetic valve 413, second exhaust temperature sensor 205 is arranged on coolant On pipeline between heater 108 and indoor heat exchanger 101.3rd electromagnetic valve 412 and the 4th electromagnetic valve 413 are in electric-controlled plate Close under 301 regulation and control or open, control the flow direction of cold-producing medium, can quickly improve delivery temperature when heating.
Likewise, in specific work process:
During refrigeration, the first interface e1 of cross valve 106 connects with second interface e2, the 3rd interface e3 and the 4th interface e4 connects Logical, dotted arrow sensing is the flow direction of cold-producing medium;I.e., in cooling mode, electric-controlled plate 301 controls the 3rd electromagnetic valve 412 to close Close, the 4th electromagnetic valve 413 is opened, coolant heater 108 is not opened.
When heating, cross valve 106 first interface e1 and the 3rd interface e3 connects, and second interface e2 and the 4th interface e4 connect Logical, the 3rd electromagnetic valve 412 is opened, the 4th electromagnetic valve 413 cuts out for electric-controlled plate 301 control, and it is the when system that heats that solid arrow points to The flow direction of cryogen.Under this heating mode, the 3rd electromagnetic valve 412 is opened so that cold-producing medium is directly from the exhaustor of compressor 107 High-pressure side flows into indoor heat exchanger 101 through coolant heater 108;4th electromagnetic valve 413 is cut out so that cold-producing medium is being circulated throughout In journey directly from outdoor heat exchanger 104 through cross valve second interface e2, the 4th interface e4 to compressor 107 suction end, reduce The heat loss of cross valve 106, quickly can improve delivery temperature so that air-conditioner air outlet temperature and room temperature are rapidly achieved Maximum, improves the heating efficiency of air conditioning system.
It should be strongly noted that for the ease of illustrating, the coolant heater in aforementioned four embodiment is all only Including one.In fact, when implementing, coolant heater can be two, is separately positioned on compressor 107 simultaneously On exhaustor and on the pipeline that is connected with electromagnetic valve device of indoor heat exchanger 101.It will be appreciated by those of skill in the art that with When using two coolant heaters be individually the same with the operation principle of a coolant heater, as long as electric-controlled plate 301 pairs its startup and closing carry out real-time control.
The air conditioning system being provided according to the present invention, the embodiment of the present invention also provides a kind of controlling party for this air conditioning system Method.Specifically, this control method comprises the following steps:
Start after a, air conditioning system receive user start-up command;
B, temperature sensor unit is detected: if all temperature sensors are all normal, enter step c;If have appointing What temperature sensor is abnormal, then control coolant heater to be closed;
C, the operational mode of detection air conditioning system: if air conditioning system is run in a heating mode, enter step d;If empty Adjusting system operates under non-heating mode, then control coolant heater to be closed;
D, the switch to electromagnetic valve device regulate and control, and control the heat loss flowing to reduce cross valve of cold-producing medium;
E, obtain the temperature data that feeds back respectively of temperature sensor unit and be compared: if indoor environment temperature t2 is less than Or be equal to default indoor environment temperature decision content t2 and outdoor environment temperature t3 and be less than or equal to default outdoor environment temperature Decision content t3 and first exhaust temperature sensor temperature t4 are less than or equal to default first exhaust temperature sensor temperature and judge Value t4 and second exhaust temperature sensor temperature t5 are less than or equal to default second exhaust temperature sensor temperature decision content T5, enters step f;Coolant heater is otherwise controlled to be closed;
F, control coolant heater startup optimization simultaneously continue to obtain the temperature data that temperature sensor unit feeds back respectively;
If g indoor heat exchanger temperature t1 is less than or equal to default indoor heat exchanger temperature decision content t1 or indoor environment Temperature t2 is less than or equal to default indoor environment temperature decision content t2, or first exhaust temperature sensor temperature t4 is less than or waits It is less than or equal to t5-dt5 in t4-dt4 or second exhaust temperature sensor temperature t5, return to step f, wherein dt4, dt5 are respectively For default coolant heater temperature corrected value;Otherwise enter step h;
If h first exhaust temperature sensor temperature t4 is more than t4-dt4 or second exhaust temperature sensor temperature t5 is more than T5-dt5, controls coolant heater stop to run;Otherwise return to step f.
Illustrate below by two specific embodiments.Define each temperature parameter and temperature decision content first.Assume T1 is indoor heat exchanger temperature, and t2 is indoor environment temperature, and t3 is outdoor environment temperature, and t4 is first exhaust temperature sensor temperature Degree, t5 is second exhaust temperature sensor temperature;T1 is indoor heat exchanger temperature decision content, and t2 judges for indoor environment temperature Value, t3 is outdoor environment temperature decision content, and t4 is first exhaust temperature sensor temperature decision content, and t5 passes for second exhaust temperature Sensor temperature decision content;Dt4, dt5 are respectively default coolant heater temperature corrected value.
The span of t1 is 0~200 DEG C, in embodiment below, can be 20 DEG C by prioritizing selection t1.
The span of t2 is -35~60 DEG C, in embodiment below, can be 15 DEG C by prioritizing selection t2.
The span of t3 is -35~60 DEG C, in embodiment below, can be 20 DEG C by prioritizing selection t3.
T4 and t5 is different with the difference of cold-producing medium, generally 80~12 DEG C of span, in embodiment below, can be excellent T4 is first selected to be 115 DEG C, t5 is 115 DEG C.
The span of dt4 and dt5 is 0~50 DEG C, in example below, also can be 5 DEG C by prioritizing selection dt4, dt5 is 5 ℃.
Embodiment five
Fig. 5 is the flowchart of the air conditioner system control method that fifth embodiment of the invention provides.For convenience of description, The present embodiment five is the explanation that air conditioning system according to Fig. 1 or Fig. 2 is controlled method.Referring to Fig. 5:
In step s501, start after air conditioning system receive user start-up command.
In step s502, temperature sensor unit is detected: if all temperature sensors are all normal, under entering One step s503;If there being any one temperature sensor abnormal, coolant heater is controlled to be closed.
In step s503, the operational mode of detection air conditioning system: if air conditioning system is run in a heating mode, enter Step s504;If air conditioning system operates under non-heating mode, coolant heater is controlled to be closed.
In this step, non-heating mode includes refrigeration mode, dehumidification mode and air vent mode.If air conditioning system is to run When under refrigeration mode, dehumidification mode or air vent mode, then coolant heater is controlled to be closed.
In step s504, the first electromagnetic valve is controlled to open.
In this step, when only air conditioning system is operated in heating mode, electric-controlled plate just controls the first electromagnetic valve to open, with This is controlled to the flow direction of cold-producing medium, to reduce the heat loss of cross valve.
In step s505, obtain the temperature data that feeds back respectively of temperature sensor unit and be compared: if t2 is less than Or it is less than or equal to t3 and t4 less than or equal to t4 and t5 less than or equal to t5 equal to t2 and t3, enter step s506;Otherwise Coolant heater is controlled to be closed.
In step s506, control coolant heater startup optimization and continue obtain temperature sensor unit feed back respectively Temperature data;
In step s507, if t1 be less than or equal to t1 or t2 be less than or equal to t2, or t4 be less than or equal to t4-dt4, Or t5 is less than or equal to t5-dt5, return to step s506;Otherwise enter step s508.
In step s508, if t4 is more than t4-dt4 or t5 and is more than t5-dt5, coolant heater stop is controlled to run; Otherwise return to step s506.
As the presently preferred embodiments, between step s503 and step s504, also include: if air conditioning system is transported in heating mode The situation of defrost occurs in row, if coolant heater has been started up running, continues to remain on state;If coolant adds Thermal also off-duty, then start coolant heater and run, after defrost terminates to proceed to the state of heating, then control the first electromagnetic valve Open.
Embodiment six
Fig. 6 is the flowchart of the air conditioner system control method that sixth embodiment of the invention provides.Likewise, in order to just In explanation, the present embodiment six is the explanation that air conditioning system according to Fig. 3 or Fig. 4 is controlled method.
Compared with embodiment five, the air conditioning system in the present embodiment six is only that the composition of electromagnetic valve device is different, therefore In concrete control process, only step s04 is different.Specifically, control method to realize flow process as follows:
In step s601, start after air conditioning system receive user start-up command.
In step s602, temperature sensor unit is detected: if all temperature sensors are all normal, under entering One step s603;If there being any one temperature sensor abnormal, coolant heater is controlled to be closed.
In step s603, the operational mode of detection air conditioning system: if air conditioning system is run in a heating mode, enter Step s604;If air conditioning system operates under non-heating mode, coolant heater is controlled to be closed.
In step s604, control the 3rd electromagnetic valve is opened, the 4th closed electromagnetic valve.
In step s605, obtain the temperature data that feeds back respectively of temperature sensor unit and be compared: if t2 is less than Or it is less than or equal to t3 and t4 less than or equal to t4 and t5 less than or equal to t5 equal to t2 and t3, enter step s606;Otherwise Coolant heater is controlled to be closed.
In step s606, control coolant heater startup optimization and continue obtain temperature sensor unit feed back respectively Temperature data;
In step s607, if t1 be less than or equal to t1 or t2 be less than or equal to t2, or t4 be less than or equal to t4-dt4, Or t5 is less than or equal to t5-dt5, return to step s606;Otherwise enter step s608.
In step s608, if t4 is more than t4-dt4 or t5 and is more than t5-dt5, coolant heater stop is controlled to run; Otherwise return to step s606.
Likewise, as the presently preferred embodiments, between step s603 and step s604, also include: if air conditioning system is in system The situation of heat pattern emerged in operation defrost, if coolant heater has been started up running, continues to remain on state;As Fruit coolant heater also off-duty, then start coolant heater and run, after defrost terminates to proceed to the state of heating, then control the Three electromagnetic valves are opened, the 4th closed electromagnetic valve.
In sum, air conditioning system provided in an embodiment of the present invention, in actual use, when opening heating mode, The heat waste of cross valve can be reduced, effectively improve the heating capacity of air conditioning system, the quick delivery temperature that improves is so that air-conditioning goes out Draught temperature and room temperature are rapidly achieved maximum, improve the heating efficiency of air conditioning system, overcome air-conditioning and " heat speed Slowly, heating effect is poor " the drawbacks of, enhance the comfort level that when heating, user uses.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, although with reference to aforementioned reality Apply the explanation that example has carried out in greater detail to the present invention, for a person skilled in the art, it still can be to aforementioned each reality Apply the technical scheme described in example to modify or carry out equivalent to wherein some technical characteristics.All the present invention's Any modification, equivalent and improvement made within spirit and principle etc., should be included within the scope of the present invention.

Claims (9)

1. a kind of air conditioning system, connects into the indoor heat exchanger of closed system, indoor fan, section including electric-controlled plate with by pipeline Stream device, outdoor heat exchanger, outdoor fan, cross valve and compressor, wherein, the exhaustor of cross valve first interface and compressor Connect, cross valve second interface is connected with outdoor heat exchanger, throttling arrangement is connected between indoor heat exchanger and outdoor heat exchanger, Cross valve the 3rd interface connects indoor heat exchanger, and cross valve the 4th interface connects the suction end of compressor it is characterised in that described air-conditioning System also includes:
It is arranged on described cross valve first interface and the 3rd interface, under the control of described electric-controlled plate to described air conditioning system system The electromagnetic valve device that cold or cold-producing medium when heating flow direction is regulated and controled;
Be arranged on the exhaustor of described compressor or indoor heat exchanger is connected on pipeline with electromagnetic valve device at least one Coolant heater;And
Obtain temperature data and be transferred to the temperature sensor unit of described electric-controlled plate, described temperature sensor unit includes interior Environment temperature sensor, indoor heat exchanger temperature sensor, outdoor environment temperature sensor and be located at compressor exhaust pipe with First exhaust temperature sensor on pipeline between cross valve first interface and be located at indoor heat exchanger and cross valve the 3rd interface Between second exhaust temperature sensor on pipeline.
2. air conditioning system as claimed in claim 1 is it is characterised in that described electromagnetic valve device includes the first electromagnetic valve and unidirectional Valve;
Described check valve is arranged on the connecting pipe of cross valve the 3rd interface and indoor heat exchanger, and the of described first electromagnetic valve One end is connected on the pipeline between described check valve and indoor heat exchanger, and the second end of described first electromagnetic valve is connected to four-way On pipeline between valve first interface and compressor exhaust pipe.
3. air conditioning system as claimed in claim 1 is it is characterised in that described electromagnetic valve device includes the 3rd electromagnetic valve and the 4th Electromagnetic valve;
Described 4th electromagnetic valve is connected on the pipeline between cross valve first interface and compressor exhaust pipe, described 3rd electromagnetism The first end of valve is connected on the pipeline between cross valve the 3rd interface and indoor heat exchanger, the second end of described 3rd electromagnetic valve It is connected on the pipeline between described 4th electromagnetic valve and compressor exhaust pipe.
4. air conditioning system as claimed in claim 2 or claim 3 is arranged on described pressure it is characterised in that described air conditioning system includes one The first coolant heater on contracting machine exhaustor.
5. air conditioning system as claimed in claim 2 or claim 3 is arranged on described room it is characterised in that described air conditioning system includes one Interior heat exchanger is connected with electromagnetic valve device the second coolant heater on pipeline.
6. air conditioning system as claimed in claim 2 or claim 3 is it is characterised in that described air conditioning system includes being arranged on described compression The first coolant heater on machine exhaustor be arranged on described indoor heat exchanger and be connected on pipeline with electromagnetic valve device Two coolant heaters.
7. a kind of control method of air conditioning system as claimed in claim 1 is it is characterised in that described control method includes following step Rapid:
Start after a, air conditioning system receive user start-up command;
B, temperature sensor unit is detected: if all temperature sensors are all normal, enter step c;If having any one Individual temperature sensor is abnormal, then control coolant heater to be closed;
C, the operational mode of detection air conditioning system: if air conditioning system is run in a heating mode, enter step d;If air-conditioning system System operates under non-heating mode, then control coolant heater to be closed;
D, the switch to electromagnetic valve device regulate and control, and control the heat loss flowing to reduce cross valve of cold-producing medium;
E, obtain the temperature data that feeds back respectively of temperature sensor unit and be compared: if indoor environment temperature t2 is less than or waits In default indoor environment temperature decision content t2 and outdoor environment temperature t3 is less than or equal to default outdoor environment temperature and judges Value t3 and first exhaust temperature sensor temperature t4 are less than or equal to default first exhaust temperature sensor temperature decision content T4 and second exhaust temperature sensor temperature t5 are less than or equal to default second exhaust temperature sensor temperature decision content t5, Enter step f;Coolant heater is otherwise controlled to be closed;
F, control coolant heater startup optimization simultaneously continue to obtain the temperature data that temperature sensor unit feeds back respectively;
If g indoor heat exchanger temperature t1 is less than or equal to default indoor heat exchanger temperature decision content t1 or indoor environment temperature T2 is less than or equal to default indoor environment temperature decision content t2, or first exhaust temperature sensor temperature t4 is less than or equal to T4-dt4 or second exhaust temperature sensor temperature t5 are less than or equal to t5-dt5, and return to step f, wherein dt4, dt5 are respectively Default coolant heater temperature corrected value;Otherwise enter step h;
If h first exhaust temperature sensor temperature t4 is more than t4-dt4 or second exhaust temperature sensor temperature t5 is more than t5- Dt5, controls coolant heater stop to run;Otherwise return to step f.
8. the control method of air conditioning system as claimed in claim 7 is it is characterised in that also include after described step c:
If air conditioning system is in the situation of heating mode emerged in operation defrost, if coolant heater has been started up running, Continue to remain on state;If coolant heater also off-duty, start coolant heater and run, defrost terminates to proceed to After heating state, enter step d.
9. control method as claimed in claim 7 or 8 is it is characterised in that the non-heating mode in described step c includes freezing Pattern, dehumidification mode and air vent mode.
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CN106500213B (en) * 2016-10-31 2022-06-03 广东美的制冷设备有限公司 Air conditioning system, air conditioner and air conditioning method
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CN107036236B (en) * 2017-03-30 2020-03-31 青岛海尔空调器有限总公司 Air conditioner heating control method and device and air conditioner
CN107300266B (en) * 2017-06-12 2019-10-15 广东美的制冷设备有限公司 Air-conditioning system, the control method of air-conditioning system
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