CN104214986A - Air-conditioning system and defrosting control method for air-conditioning system - Google Patents
Air-conditioning system and defrosting control method for air-conditioning system Download PDFInfo
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- CN104214986A CN104214986A CN201410445316.1A CN201410445316A CN104214986A CN 104214986 A CN104214986 A CN 104214986A CN 201410445316 A CN201410445316 A CN 201410445316A CN 104214986 A CN104214986 A CN 104214986A
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Abstract
The invention discloses an air-conditioning system, which comprises a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, a compressor, a throttling part and a control module, wherein the four-way valve comprises an exhaust end, a suction end, a condenser end and an evaporator end; one end of the outdoor heat exchanger is communicated with the throttling part, and the other end of the outdoor heat exchanger is communicated with the condenser end; the indoor heat exchanger comprises two sets of heat exchange pipelines; each of the two sets of heat exchange pipelines comprises at least one heat exchange flow path; the control module is used for controlling one end of the heat exchange flow path in one of the heat exchange pipelines to be communicated with the evaporator end and the other end of the heat exchange flow path in one of the heat exchange pipelines to be communicated with the throttling part and controlling one end of the heat exchange flow path in the other heat exchange pipe to be communicated with the exhaust end and the other end of the heat exchange flow path in the other heat exchange pipe to be communicated with the suction end when a defrosting command is detected. The invention also discloses a control method for the air-conditioning system. According to the air-conditioning system and the control method for the air-conditioning system disclose by the invention, the running noise of the air-conditioning system is reduced; the continuous heating effect is achieved; the phenomenon that the comfort level of the environment is lower due to the fact that indoor temperature is lowered during a defrosting process is prevented.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to the defrosting control method of air-conditioning system and air-conditioning system.
Background technology
As everyone knows, in prior art, air-conditioning system is when heating operation, usually needs to defrost to indoor heat exchanger, to improve the heat exchange efficiency of indoor heat exchanger.In traditional air-conditioning system, when detecting defrosting instruction, the scheme of cross valve commutation is usually adopted to defrost.Because cross valve is when commutating, usually can produce larger noise, and after cross valve commutation, indoor heat exchanger will be caused to enter defrosting mode, and stopping is heated by indoor heat exchanger in defrost mode, and environment temperature is reduced.
Foregoing, only for auxiliary understanding technical scheme of the present invention, does not represent and admits that foregoing is prior art.
Summary of the invention
Main purpose of the present invention is the noise reducing air-conditioning system operation, reaches the effect continuing to heat, prevents from, because defrost process causes indoor temperature to decline, causing environmental amenity degree lower.
To achieve these goals, the invention provides a kind of air-conditioning system, comprise cross valve, outdoor heat exchanger, indoor heat exchanger, compressor, throttle part and control module, described cross valve comprises exhaust end, suction end, condenser end and evaporator end, wherein said exhaust end is communicated with the exhaust outlet of described compressor, and described suction end is communicated with the air entry of described compressor; One end of described outdoor heat exchanger is communicated with described throttle part, and the other end is communicated with described condenser end; Described indoor heat exchanger comprises two groups of heat exchanging pipes, wherein often organizes heat exchanging pipe and comprises at least one heat exchange stream; When described control module is used for detecting defrosting instruction, control one end of heat exchange stream in a heat exchanging pipe and described evaporator end, the other end is communicated with described throttle part; And the one end controlling heat exchange stream in another heat exchanging pipe is communicated with described exhaust end, the other end is communicated with described suction end.
Preferably, described control module comprises the first switch element that one_to_one corresponding is arranged at each heat exchange stream one end, one_to_one corresponding is arranged at the second switch unit of each heat exchange stream other end, be located at the first current divider on the pipeline between described exhaust end and described exhaust outlet, be located at the second current divider on the pipeline between described suction end and described air entry, and for controlling the control circuit of the first switch element and second switch cell operation state, wherein said first switch element comprises the first switch valve and second switch valve, described first switch valve is located on the pipeline between described heat exchange stream and described evaporator end, described second switch valve is located on the pipeline between described heat exchange stream and described first current divider, described second switch unit comprises the 3rd switch valve and the 4th switch valve, described 3rd switch valve is located on the pipeline between described heat exchange stream and described throttle part, and described 4th switch valve is located on the pipeline between described heat exchange stream and described second current divider, described control circuit is electrically connected with each switch valve respectively.
Preferably, described control circuit be used for when detecting heating operation instruction, control the first switch valve and the 3rd switch valve is opened and second switch valve and the 4th switch valve closedown; When detecting defrost control instruction, control the first switch valve corresponding to heat exchange stream in a heat exchanging pipe and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed, heating mode is entered to make heat exchange stream, and control the first switch valve corresponding to heat exchange stream in another heat exchanging pipe and the 3rd switch valve and to close and second switch valve and the 4th switch valve are opened, enter defrosting mode to make heat exchange stream; After preset time, the heat exchange stream controlling heating mode switches to defrosting mode, and the heat exchange stream controlling defrosting mode switches to heating mode.
Preferably, described first switch valve, second switch valve, the 3rd switch valve and the 4th switch valve are magnetic valve.
Preferably, when the quantity of the heat exchange stream in each heat exchanging pipe is one, described first current divider and the second current divider are three-way pipe.
Preferably, described indoor heat exchanger comprises interior row's heat exchanger and outer row's heat exchanger, and described heat exchange stream comprises the first heat exchange stream be made up of interior row's heat exchanger and the second heat exchange stream be made up of outer row's heat exchanger.
In addition, for achieving the above object, the present invention also provides a kind of defrosting control method of air-conditioning system, described air-conditioning system comprises cross valve, outdoor heat exchanger, indoor heat exchanger, compressor, throttle part and control module, described cross valve comprises exhaust end, suction end, condenser end and evaporator end, wherein said exhaust end is communicated with the exhaust outlet of described compressor, and described suction end is communicated with the air entry of described compressor; One end of described outdoor heat exchanger is communicated with described throttle part, and the other end is communicated with described condenser end; Described indoor heat exchanger comprises two groups of heat exchanging pipes, wherein often organizes heat exchanging pipe and comprises at least one heat exchange stream;
The defrosting control method of described air-conditioning system comprises the following steps:
A, when detect defrosting instruction time, described control module controls one end of heat exchange stream in a heat exchanging pipe and described evaporator end, and the other end is communicated with described throttle part, enters heating mode to make heat exchange stream; And the one end controlling heat exchange stream in another heat exchanging pipe is communicated with described exhaust end, the other end is communicated with described suction end, enters defrosting mode to make heat exchange stream;
B, after preset time, the heat exchange stream that described control module controls heating mode switches to defrosting mode, and the heat exchange stream controlling defrosting mode switches to heating mode.
Preferably, described control module comprises the first switch element that one_to_one corresponding is arranged at each heat exchange stream one end, one_to_one corresponding is arranged at the second switch unit of each heat exchange stream other end, be located at the first current divider on the pipeline between described exhaust end and described exhaust outlet, be located at the second current divider on the pipeline between described suction end and described air entry, and for controlling the control circuit of the first switch element and second switch cell operation state, wherein said first switch element comprises the first switch valve and second switch valve, described first switch valve is located on the pipeline between described heat exchange stream and described evaporator end, described second switch valve is located on the pipeline between described heat exchange stream and described first current divider, described second switch unit comprises the 3rd switch valve and the 4th switch valve, described 3rd switch valve is located on the pipeline between described heat exchange stream and described throttle part, and described 4th switch valve is located on the pipeline between described heat exchange stream and described second current divider,
Described steps A comprises: when detecting defrost control instruction, described control circuit controls the first switch valve corresponding to heat exchange stream in a heat exchanging pipe and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed, heating mode is entered to make heat exchange stream, and control the first switch valve corresponding to heat exchange stream in another heat exchanging pipe and the 3rd switch valve and to close and second switch valve and the 4th switch valve are opened, enter defrosting mode to make heat exchange stream.
Preferably, also comprise before described steps A:
Control the first switch valve and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed.
The embodiment of the present invention is by arranging control module when detecting defrosting instruction, and control one end of heat exchange stream in a heat exchanging pipe and described evaporator end, the other end is communicated with described throttle part; And the one end controlling heat exchange stream in another heat exchanging pipe is communicated with described exhaust end, the other end is communicated with described suction end; Thus when achieving heating operation, carry out reverse cycle defrost without the need to starting cross valve.Because this reducing the noise that air-conditioning system is run, extend the service life of cross valve; In addition run because heat exchange stream at least one in defrost process is in heating mode, thus reach the effect continuing to heat, prevent from, because defrost process causes indoor temperature to decline, causing environmental amenity degree lower.
Accompanying drawing explanation
Fig. 1 is the structural representation of air-conditioning system preferred embodiment of the present invention;
Fig. 2 is the schematic flow sheet of the defrosting control method preferred embodiment of air-conditioning system of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of air-conditioning system, with reference to Fig. 1, in one embodiment, this air-conditioning system comprises cross valve 10, outdoor heat exchanger 11, indoor heat exchanger 12, compressor 13, throttle part 14 and control module, described cross valve 10 comprises exhaust end D, suction end S, condenser end C and evaporator end E, wherein said exhaust end D is communicated with the exhaust outlet of described compressor 13, and described suction end S is communicated with the air entry of described compressor 13; One end of described outdoor heat exchanger 11 is communicated with described throttle part 14, and the other end is communicated with described condenser end C; Described indoor heat exchanger 12 comprises two groups of heat exchanging pipes, wherein often organizes heat exchanging pipe and comprises at least one heat exchange stream 121; When described control module is used for detecting defrosting instruction, control one end of heat exchange stream 121 in a heat exchanging pipe and described evaporator end E, the other end is communicated with described throttle part 14; And the one end controlling heat exchange stream 121 in another heat exchanging pipe is communicated with described exhaust end D, the other end is communicated with described suction end S.
Particularly, above-mentioned defrosting instruction initiatively can enter the operating instructions generation by user by remote controller, also by air-conditioning system situation according to operation in the process of heating operation, automatically can trigger generation.Above-mentioned heat exchange stream 121 is made up of the heat exchanger tube of indoor heat exchanger 12, and the way of this heat exchange stream 121 can be arranged according to actual needs, is not further limited at this.Such as above-mentioned indoor heat exchanger 12 is dual-row heat exchanger, comprises interior row's heat exchanger and outer row's heat exchanger, and described heat exchange stream 121 comprises the first heat exchange stream be made up of interior row's heat exchanger and the second heat exchange stream be made up of outer row's heat exchanger.If above-mentioned indoor heat exchanger is one-row heat exchanger, then can forms the first heat exchange stream by the first half heat exchanger tube of heat exchanger, form the second heat exchange stream by the latter half heat exchanger tube.
When air-conditioning system heating operation, first control module controls one end of all heat exchange streams 121 and described evaporator end E, the other end is communicated with described throttle part 14, thus makes all heat exchange streams 121 be in heating mode, achieves the heating operation of air-conditioning system.When detecting defrosting instruction, heat exchange stream in a heat exchanging pipe keeps heating mode to run by control module; The one end controlling heat exchange stream 121 in another heat exchanging pipe is communicated with described exhaust end D, the other end is communicated with described suction end S, defrosting mode is converted to from heating mode to make heat exchange stream 121 in another heat exchanging pipe, heat exchange stream 121 in defrost mode, the part high temperature refrigerant flowed out from compressor 13 exhaust outlet carries out heat exchange by the heat exchange stream 121 flowed directly into defrosting mode, and directly flow back in compressor 13 after heat exchange, thus realize the defrost function of heat exchange stream 121.Be understandable that, in order to reach better defrosting effect, one end of heat exchange stream 121 and described evaporator end E in control one heat exchanging pipe, the other end is communicated with described throttle part 14; And the one end controlling heat exchange stream 121 in another heat exchanging pipe is communicated with described exhaust end D, after the other end is communicated with described suction end S, through preset time, the heat exchange stream controlling heating mode is switched to defrosting mode by control module, and the heat exchange stream controlling defrosting mode switches to heating mode; And after preset time, exit defrosting mode.Thus ensure that each heat exchange stream all defrosts.
The embodiment of the present invention is by arranging control module when detecting defrosting instruction, and control one end of heat exchange stream 121 in a heat exchanging pipe and described evaporator end E, the other end is communicated with described throttle part 14; And the one end controlling heat exchange stream 121 in another heat exchanging pipe is communicated with described exhaust end D, the other end is communicated with described suction end S; Thus when achieving heating operation, carry out reverse cycle defrost without the need to starting cross valve 10.Because this reducing the noise that air-conditioning system is run, extend the service life of cross valve 10; In addition run because heat exchange stream at least one in defrost process is in heating mode, thus reach the effect continuing to heat, prevent from, because defrost process causes indoor temperature to decline, causing environmental amenity degree lower.
Particularly, above-mentioned control module comprises the first switch element 15 that one_to_one corresponding is arranged at each heat exchange stream 121 one end, one_to_one corresponding is arranged at the second switch unit 16 of each heat exchange stream 121 other end, be located at the first current divider 17 on the pipeline between described exhaust end D and described exhaust outlet, be located at the second current divider 18 on the pipeline between described suction end S and described air entry, and for controlling the control circuit of the first switch element 15 and second switch unit 16 duty, wherein said first switch element 15 comprises the first switch valve 151 and second switch valve 152, described first switch valve 151 is located on the pipeline between described heat exchange stream 121 and described evaporator end E, described second switch valve 152 is located on the pipeline between described heat exchange stream 121 and described first current divider 17, described second switch unit 16 comprises the 3rd switch valve 161 and the 4th switch valve 162, described 3rd switch valve 161 is located on the pipeline between described heat exchange stream 121 and described throttle part 14, and described 4th switch valve 162 is located on the pipeline between described heat exchange stream 121 and described second current divider 18, described control circuit is electrically connected with each switch valve respectively.It should be noted that described each switch valve comprises the first switch valve 151, second switch valve 152, the 3rd switch valve 161 and the 4th switch valve 162.
Particularly, described control circuit is used for when detecting heating operation instruction while entering heating operation (user control air-conditioning system), controls the first switch valve 151 and the 3rd switch valve 161 is opened and second switch valve 152 and the 4th switch valve 162 are closed; When detecting defrost control instruction, control the first switch valve 151 of heat exchange stream 121 correspondence in a heat exchanging pipe and the 3rd switch valve 161 is opened and second switch valve 152 and the 4th switch valve 162 are closed, heating mode is entered to make heat exchange stream 121, and control the first switch valve 151 of heat exchange stream 121 in another heat exchanging pipe and the 3rd switch valve 161 cuts out and second switch valve 152 and the 4th switch valve 162 are opened, enter defrosting mode to make heat exchange stream 121; After preset time, the heat exchange stream 121 controlling heating mode switches to defrosting mode, and the heat exchange stream 121 controlling defrosting mode switches to heating mode.
In the present embodiment, for above-mentioned dual-row heat exchanger, make detailed description.Each heat exchanging pipe above-mentioned forms wherein heat exchange stream 121 by a heat exchange stream 121 and comprises the first heat exchange stream be made up of interior row's heat exchanger and the second heat exchange stream be made up of outer row's heat exchanger.When detecting heating operation instruction, controlling the first all switch valves 151 and the 3rd switch valve 161 is opened and second switch valve 152 and the 4th switch valve 162 are closed, making the first heat exchange stream and the second heat exchange stream all enter heating mode; When detecting defrost control instruction, controlling the first switch valve 151 corresponding to the first heat exchange stream and the 3rd switch valve 161 is opened and second switch valve 152 and the 4th switch valve 162 are closed, keeping heating mode to make the first heat exchange stream; Control the first switch valve 151 corresponding to the second heat exchange stream and the 3rd switch valve 162 cuts out and second switch valve 152 and the 4th switch valve 162 are opened simultaneously, to make the second heat exchange stream enter defrosting mode, thus realize defrosting to the second heat exchange.Thus realize defrosting after preset time to the first heat exchange, control the first switch valve 151 corresponding to the first heat exchange stream and the 3rd switch valve 161 cuts out and second switch valve 152 and the 4th switch valve 162 are opened, to make the first heat exchange stream switch to defrosting mode, thus realize defrosting to the first heat exchange; Control the first switch valve 151 corresponding to the second heat exchange stream and the 3rd switch valve 161 is opened and second switch valve 152 and the 4th switch valve 162 are closed simultaneously, switch to heating mode to make the second heat exchange stream.
Be understandable that, the structure of above-mentioned first switch valve 151, second switch valve 152, the 3rd switch valve 161 and the 4th switch valve 162 is arranged according to actual needs, as long as can realize automatically controlled switch valve, in the present embodiment, above-mentioned first switch valve 151, second switch valve 152, the 3rd switch valve 161 and the 4th switch valve 162 are preferably magnetic valve.The structure of above-mentioned first current divider 17 and the second current divider 18 also can be arranged according to actual needs, in the present embodiment, when the quantity of the heat exchange stream 121 in each heat exchanging pipe is one, described first current divider 17 and the second current divider 18 are preferably three-way pipe.
The present invention also provides a kind of defrosting control method of air-conditioning system further, particularly, with reference to Fig. 2, in one embodiment, described air-conditioning system comprises cross valve, outdoor heat exchanger, indoor heat exchanger, compressor, throttle part and control module, described cross valve comprises exhaust end, suction end, condenser end and evaporator end, and wherein said exhaust end is communicated with the exhaust outlet of described compressor, and described suction end is communicated with the air entry of described compressor; One end of described outdoor heat exchanger is communicated with described throttle part, and the other end is communicated with described condenser end; Described indoor heat exchanger comprises two groups of heat exchanging pipes, wherein often organizes heat exchanging pipe and comprises at least one heat exchange stream;
The defrosting control method of described air-conditioning system comprises the following steps:
Step S10, when detect defrosting instruction time, described control module controls one end of heat exchange stream in a heat exchanging pipe and described evaporator end, and the other end is communicated with described throttle part, enters heating mode to make heat exchange stream; And the one end controlling heat exchange stream in another heat exchanging pipe is communicated with described exhaust end, the other end is communicated with described suction end, enters defrosting mode to make heat exchange stream;
Step S20, after preset time, the heat exchange stream that described control module controls heating mode switches to defrosting mode, and the heat exchange stream controlling defrosting mode switches to heating mode.
Particularly, above-mentioned defrosting instruction initiatively can enter the operating instructions generation by user by remote controller, also by air-conditioning system situation according to operation in the process of heating operation, automatically can trigger generation.Above-mentioned heat exchange stream is made up of the heat exchanger tube of indoor heat exchanger, and the way of this heat exchange stream can be arranged according to actual needs, is not further limited at this.Such as above-mentioned indoor heat exchanger is dual-row heat exchanger, comprises interior row's heat exchanger and outer row's heat exchanger, and described heat exchange stream comprises the first heat exchange stream be made up of interior row's heat exchanger and the second heat exchange stream be made up of outer row's heat exchanger.If above-mentioned indoor heat exchanger is one-row heat exchanger, then can forms the first heat exchange stream by the first half heat exchanger tube of heat exchanger, form the second heat exchange stream by the latter half heat exchanger tube.
When air-conditioning system heating operation, first control module controls one end of all heat exchange streams and described evaporator end, and the other end is communicated with described throttle part, thus makes all heat exchange streams be in heating mode, achieves the heating operation of air-conditioning system.When detecting defrosting instruction, heat exchange stream in a heat exchanging pipe keeps heating mode to run by control module; The one end controlling heat exchange stream in another heat exchanging pipe is communicated with described exhaust end, the other end is communicated with described suction end, defrosting mode is converted to from heating mode to make heat exchange stream in another heat exchanging pipe, heat exchange stream in defrost mode, the part high temperature refrigerant flowed out from exhaust outlet of compressor carries out heat exchange by the heat exchange stream flowed directly into defrosting mode, and directly flow back in compressor after heat exchange, thus realize the defrost function of heat exchange stream.Be understandable that, in order to reach better defrosting effect, one end of heat exchange stream and described evaporator end in control one heat exchanging pipe, the other end is communicated with described throttle part; And the one end controlling heat exchange stream in another heat exchanging pipe is communicated with described exhaust end, after the other end is communicated with described suction end, through preset time, the heat exchange stream controlling heating mode is switched to defrosting mode by control module, and the heat exchange stream controlling defrosting mode switches to heating mode; And after preset time, exit defrosting mode.Thus ensure that each heat exchange stream all defrosts.
The embodiment of the present invention is by arranging control module when detecting defrosting instruction, and control one end of heat exchange stream in a heat exchanging pipe and described evaporator end, the other end is communicated with described throttle part; And the one end controlling heat exchange stream in another heat exchanging pipe is communicated with described exhaust end, the other end is communicated with described suction end; Thus when achieving heating operation, carry out reverse cycle defrost without the need to starting cross valve.Because this reducing the noise that air-conditioning system is run, extend the service life of cross valve; In addition run because heat exchange stream at least one in defrost process is in heating mode, thus reach the effect continuing to heat, prevent from, because defrost process causes indoor temperature to decline, causing environmental amenity degree lower.
Further, based on above-described embodiment, in the present embodiment, above-mentioned control module comprises the first switch element that one_to_one corresponding is arranged at each heat exchange stream one end, one_to_one corresponding is arranged at the second switch unit of each heat exchange stream other end, be located at the first current divider on the pipeline between described exhaust end and described exhaust outlet, be located at the second current divider on the pipeline between described suction end and described air entry, and for controlling the control circuit of the first switch element and second switch cell operation state, wherein said first switch element comprises the first switch valve and second switch valve, described first switch valve is located on the pipeline between described heat exchange stream and described evaporator end, described second switch valve is located on the pipeline between described heat exchange stream and described first current divider, described second switch unit comprises the 3rd switch valve and the 4th switch valve, described 3rd switch valve is located on the pipeline between described heat exchange stream and described throttle part, and described 4th switch valve is located on the pipeline between described heat exchange stream and described second current divider,
Described step S10 comprises: when detecting defrost control instruction, described control circuit controls the first switch valve corresponding to heat exchange stream in a heat exchanging pipe and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed, heating mode is entered to make heat exchange stream, and control the first switch valve corresponding to heat exchange stream in another heat exchanging pipe and the 3rd switch valve and to close and second switch valve and the 4th switch valve are opened, enter defrosting mode to make heat exchange stream.
Also comprise before above-mentioned steps S10: control the first switch valve and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed.
In the present embodiment, for above-mentioned dual-row heat exchanger, make detailed description.Each heat exchanging pipe above-mentioned forms by a heat exchange stream, and wherein heat exchange stream comprises the first heat exchange stream be made up of interior row's heat exchanger and the second heat exchange stream be made up of outer row's heat exchanger.When detecting heating operation instruction, controlling the first all switch valves and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed, making the first heat exchange stream and the second heat exchange stream all enter heating mode; When detecting defrost control instruction, controlling the first switch valve corresponding to the first heat exchange stream and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed, keeping heating mode to make the first heat exchange stream; Control the first switch valve corresponding to the second heat exchange stream and the 3rd switch valve to close and second switch valve and the 4th switch valve are opened simultaneously, to make the second heat exchange stream enter defrosting mode, thus realize defrosting to the second heat exchange.Thus realize defrosting after preset time to the first heat exchange, control the first switch valve corresponding to the first heat exchange stream and the 3rd switch valve to close and second switch valve and the 4th switch valve are opened, to make the first heat exchange stream switch to defrosting mode, thus realize defrosting to the first heat exchange; Control the first switch valve corresponding to the second heat exchange stream and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed simultaneously, switch to heating mode to make the second heat exchange stream.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. an air-conditioning system, it is characterized in that, comprise cross valve, outdoor heat exchanger, indoor heat exchanger, compressor, throttle part and control module, described cross valve comprises exhaust end, suction end, condenser end and evaporator end, wherein said exhaust end is communicated with the exhaust outlet of described compressor, and described suction end is communicated with the air entry of described compressor; One end of described outdoor heat exchanger is communicated with described throttle part, and the other end is communicated with described condenser end; Described indoor heat exchanger comprises two groups of heat exchanging pipes, wherein often organizes heat exchanging pipe and comprises at least one heat exchange stream; When described control module is used for detecting defrosting instruction, control one end of heat exchange stream in a heat exchanging pipe and described evaporator end, the other end is communicated with described throttle part; And the one end controlling heat exchange stream in another heat exchanging pipe is communicated with described exhaust end, the other end is communicated with described suction end.
2. air-conditioning system as claimed in claim 1, it is characterized in that, described control module comprises the first switch element that one_to_one corresponding is arranged at each heat exchange stream one end, one_to_one corresponding is arranged at the second switch unit of each heat exchange stream other end, be located at the first current divider on the pipeline between described exhaust end and described exhaust outlet, be located at the second current divider on the pipeline between described suction end and described air entry, and for controlling the control circuit of the first switch element and second switch cell operation state, wherein said first switch element comprises the first switch valve and second switch valve, described first switch valve is located on the pipeline between described heat exchange stream and described evaporator end, described second switch valve is located on the pipeline between described heat exchange stream and described first current divider, described second switch unit comprises the 3rd switch valve and the 4th switch valve, described 3rd switch valve is located on the pipeline between described heat exchange stream and described throttle part, and described 4th switch valve is located on the pipeline between described heat exchange stream and described second current divider, described control circuit is electrically connected with each switch valve respectively.
3. air-conditioning system as claimed in claim 2, is characterized in that, described control circuit is used for when detecting heating operation instruction, controls the first switch valve and the 3rd switch valve is opened and second switch valve and the closedown of the 4th switch valve; When detecting defrost control instruction, control the first switch valve corresponding to heat exchange stream in a heat exchanging pipe and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed, heating mode is entered to make heat exchange stream, and control the first switch valve corresponding to heat exchange stream in another heat exchanging pipe and the 3rd switch valve and to close and second switch valve and the 4th switch valve are opened, enter defrosting mode to make heat exchange stream; After preset time, the heat exchange stream controlling heating mode switches to defrosting mode, and the heat exchange stream controlling defrosting mode switches to heating mode.
4. air-conditioning system as claimed in claim 2, it is characterized in that, described first switch valve, second switch valve, the 3rd switch valve and the 4th switch valve are magnetic valve.
5. air-conditioning system as claimed in claim 5, it is characterized in that, when the quantity of the heat exchange stream in each heat exchanging pipe is one, described first current divider and the second current divider are three-way pipe.
6. the air-conditioning system according to any one of claim 1 to 5, it is characterized in that, described indoor heat exchanger comprises interior row's heat exchanger and outer row's heat exchanger, and described heat exchange stream comprises the first heat exchange stream be made up of interior row's heat exchanger and the second heat exchange stream be made up of outer row's heat exchanger.
7. the defrosting control method of an air-conditioning system, it is characterized in that, described air-conditioning system comprises cross valve, outdoor heat exchanger, indoor heat exchanger, compressor, throttle part and control module, described cross valve comprises exhaust end, suction end, condenser end and evaporator end, wherein said exhaust end is communicated with the exhaust outlet of described compressor, and described suction end is communicated with the air entry of described compressor; One end of described outdoor heat exchanger is communicated with described throttle part, and the other end is communicated with described condenser end; Described indoor heat exchanger comprises two groups of heat exchanging pipes, wherein often organizes heat exchanging pipe and comprises at least one heat exchange stream;
The defrosting control method of described air-conditioning system comprises the following steps:
A, when detect defrosting instruction time, described control module controls one end of heat exchange stream in a heat exchanging pipe and described evaporator end, and the other end is communicated with described throttle part, enters heating mode to make heat exchange stream; And the one end controlling heat exchange stream in another heat exchanging pipe is communicated with described exhaust end, the other end is communicated with described suction end, enters defrosting mode to make heat exchange stream;
B, after preset time, the heat exchange stream that described control module controls heating mode switches to defrosting mode, and the heat exchange stream controlling defrosting mode switches to heating mode.
8. the defrosting control method of air-conditioning system as claimed in claim 7, it is characterized in that, described control module comprises the first switch element that one_to_one corresponding is arranged at each heat exchange stream one end, one_to_one corresponding is arranged at the second switch unit of each heat exchange stream other end, be located at the first current divider on the pipeline between described exhaust end and described exhaust outlet, be located at the second current divider on the pipeline between described suction end and described air entry, and for controlling the control circuit of the first switch element and second switch cell operation state, wherein said first switch element comprises the first switch valve and second switch valve, described first switch valve is located on the pipeline between described heat exchange stream and described evaporator end, described second switch valve is located on the pipeline between described heat exchange stream and described first current divider, described second switch unit comprises the 3rd switch valve and the 4th switch valve, described 3rd switch valve is located on the pipeline between described heat exchange stream and described throttle part, and described 4th switch valve is located on the pipeline between described heat exchange stream and described second current divider,
Described steps A comprises: when detecting defrost control instruction, described control circuit controls the first switch valve corresponding to heat exchange stream in a heat exchanging pipe and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed, heating mode is entered to make heat exchange stream, and control the first switch valve corresponding to heat exchange stream in another heat exchanging pipe and the 3rd switch valve and to close and second switch valve and the 4th switch valve are opened, enter defrosting mode to make heat exchange stream.
9. the defrosting control method of air-conditioning system as claimed in claim 8, is characterized in that, also comprise before described steps A:
Control the first switch valve and the 3rd switch valve is opened and second switch valve and the 4th switch valve are closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445316.1A CN104214986B (en) | 2014-09-03 | 2014-09-03 | Air-conditioning system and the defrosting control method of air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445316.1A CN104214986B (en) | 2014-09-03 | 2014-09-03 | Air-conditioning system and the defrosting control method of air-conditioning system |
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| Publication Number | Publication Date |
|---|---|
| CN104214986A true CN104214986A (en) | 2014-12-17 |
| CN104214986B CN104214986B (en) | 2017-03-15 |
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| CN201410445316.1A Active CN104214986B (en) | 2014-09-03 | 2014-09-03 | Air-conditioning system and the defrosting control method of air-conditioning system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105157117A (en) * | 2015-10-20 | 2015-12-16 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN106091265A (en) * | 2016-06-17 | 2016-11-09 | 广东美的制冷设备有限公司 | The control method of air-conditioner |
| CN114061055A (en) * | 2020-07-28 | 2022-02-18 | 广东美的制冷设备有限公司 | Air conditioner, control method, air conditioner control device and readable storage medium |
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| CN105157117A (en) * | 2015-10-20 | 2015-12-16 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
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| CN114061055A (en) * | 2020-07-28 | 2022-02-18 | 广东美的制冷设备有限公司 | Air conditioner, control method, air conditioner control device and readable storage medium |
| CN114061055B (en) * | 2020-07-28 | 2023-03-31 | 广东美的制冷设备有限公司 | Air conditioner, control method, air conditioner control device and readable storage medium |
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| CN104214986B (en) | 2017-03-15 |
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