CN103939999B - Double-refrigerant air conditioner system and control method thereof - Google Patents
Double-refrigerant air conditioner system and control method thereof Download PDFInfo
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- CN103939999B CN103939999B CN201410153813.4A CN201410153813A CN103939999B CN 103939999 B CN103939999 B CN 103939999B CN 201410153813 A CN201410153813 A CN 201410153813A CN 103939999 B CN103939999 B CN 103939999B
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Abstract
The invention discloses a double-refrigerant air conditioner system and a control method of the double-refrigerant air conditioner system. The double-refrigerant air conditioner system comprises a controller, an indoor unit and an outdoor unit. The indoor unit and the outdoor unit are connected through pipelines to form a circulation loop. The double-refrigerant air conditioner system further comprises a first branch used for storing a first refrigerant, and a second branch used for storing a second refrigerant, wherein the first branch is connected to the circulation loop in series after being connected with the second branch in parallel. The controller controls the first branch and the second branch to be opened and closed according to the work mode of the double-refrigerant air conditioner system, and therefore the first refrigerant or the second refrigerant can flow in the circulation loop in a circulating mode. According to the double-refrigerant air conditioner system and the control method of the double-refrigerant air conditioner system, the air conditioner system can better have multiple work modes at the same time in the same pipeline, and the energy efficiency ratio of the air conditioner system is increased.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of one pair of coolant air conditioners system and control method thereof.
Background technology
At present, in general air conditioning system, a kind of coolant, by the switching of cross valve, is realized the various mode of operations of air conditioning system, such as refrigeration mode, heating mode and dehumidification mode etc. by same coolant.
The coolant of air conditioning system is typically formed according to certain proportions by ammonia, freon, water and Hydrocarbon etc., each component above-mentioned is carried out proportioning according to different ratios, the characteristic of obtained coolant also differs, such as, by the configuration suitable to coolant component, the characteristic that can realize a kind of coolant is more beneficial for refrigeration or dehumidifying, and the characteristic of another kind of coolant is more beneficial for heating.
The defect of existing air conditioning system is, is only realized multiple mode of operations of air conditioning system by a kind of coolant, and owing to optimal refrigerant proportioning required under different working modes also differs, the most existing air conditioning system is difficult to preferably realize multiple-working mode simultaneously.
Foregoing is only used for auxiliary and understands technical scheme, does not represent and recognizes that foregoing is prior art.
Summary of the invention
Present invention is primarily targeted at a kind of one pair of coolant air conditioners system with identical inventive concept of offer and control method thereof, it is intended to enable air conditioning system preferably to realize multiple-working mode simultaneously.
To achieve these goals, the one pair of coolant air conditioners system that the present invention provides, including controller, indoor set and off-premises station, described indoor set and described off-premises station connect formation one closed circuit by pipeline, described one pair of coolant air conditioners system also includes the first branch road for storing the first coolant and for storing the second branch road of the second coolant, is series in described closed circuit after described first branch road and described second branch circuit parallel connection；Described controller controls described first branch road according to the mode of operation of described one pair of coolant air conditioners system and the second branch road opens or closes, thus controls described first coolant or the second coolant circulates in described closed circuit.
Preferably, described first branch road includes the first coolant storage tank, the first inlet control valve being located at described first coolant storage tank arrival end and is located at the first discharge control valve of the described first coolant storage tank port of export；Described second branch road includes the second coolant storage tank, the second inlet control valve being located at described second coolant storage tank arrival end and is located at the second discharge control valve of the described second coolant storage tank port of export；Described controller controls described first inlet control valve, the first discharge control valve, the second inlet control valve and/or the second discharge control valve according to the mode of operation of described one pair of coolant air conditioners system and opens or closes.
Preferably, at the port of export of the compressor that described off-premises station is located at by described first branch road and the second branch road.
Preferably, it is provided with at the arrival end of described first branch road and the second branch road for the coolant in described closed circuit being collected the air pump device to described first branch road and the second branch road.
Preferably, described first inlet control valve, the first discharge control valve, the second inlet control valve and/or the second discharge control valve are check valve.
Present invention further propose that the control method of a kind of one pair of coolant air conditioners system, comprise the following steps:
The coolant switching control order sent according to user obtains the target operational mode of switching；
When described target pattern is the first mode of operation, controls described second refrigerant recovering to after in the second branch road, close described second branch road and open the first branch road, control described first coolant and enter in the closed circuit of one pair of coolant air conditioners system and carry out recuperated cycle；
When described target pattern is the second mode of operation, controls described first refrigerant recovering to after in the first branch road, close described first branch road and open the second branch road, control described second coolant and enter in the closed circuit of one pair of coolant air conditioners system and carry out recuperated cycle.
Preferably, when described target pattern is the second mode of operation, control described first refrigerant recovering to after in the first branch road, close described first branch road and open the second branch road, control described second coolant and enter and the closed circuit of one pair of coolant air conditioners system carries out the step of recuperated cycle specifically include:
When described target pattern is the second mode of operation, and the ambient temperature residing for described off-premises station less than or equal to the first preset temperature time, control described first refrigerant recovering to after in the first branch road, close described first branch road and open the second branch road, controlling the closed circuit of described second coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.
Preferably, when described target pattern is the second mode of operation, control described first refrigerant recovering to after in the first branch road, close described first branch road and open the second branch road, control described second coolant and enter and the closed circuit of one pair of coolant air conditioners system carries out the step of recuperated cycle specifically include:
When the ambient temperature residing for described target pattern is the second mode of operation, described off-premises station is more than the first preset temperature and when receiving the number of times of described coolant switching control order more than or equal to the first predetermined times, control described first refrigerant recovering to after in the first branch road, close described first branch road and open the second branch road, controlling the closed circuit of described second coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.
Preferably, when described target pattern is the first mode of operation, control described second refrigerant recovering to after in the second branch road, close described second branch road and open the first branch road, control described first coolant and enter and the closed circuit of one pair of coolant air conditioners system carries out the step of recuperated cycle specifically include:
When described target pattern is the first mode of operation, and the ambient temperature residing for described off-premises station more than or equal to the second preset temperature time, control described second refrigerant recovering to after in the second branch road, close described second branch road and open the first branch road, controlling the closed circuit of described first coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.
Preferably, it is described when described target pattern is the first mode of operation, control described second refrigerant recovering to after in the second branch road, closing described second branch road and open the first branch road, the step controlling to carry out in the closed circuit of described first coolant entrance one pair of coolant air conditioners system recuperated cycle specifically includes:
When described target pattern is that the ambient temperature residing for the first mode of operation, described off-premises station is less than the second preset temperature, and when receiving the number of times of described coolant switching control order more than or equal to the second predetermined times, control described second refrigerant recovering to after in the second branch road, close described second branch road and open the first branch road, controlling the closed circuit of described first coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.
The one pair of coolant air conditioners system that the present invention provides is by being provided for storing the first branch road of the first coolant and for storing the second branch road of the second coolant, it is series in above-mentioned closed circuit after first branch road and the second branch circuit parallel connection, controller controls corresponding branch road according to the mode of operation of one pair of coolant air conditioners system and opens and closes, when needing to carry out the switching between different working modes, after in the switching control instruction corresponding refrigerant recovering of control to respective branch, again by another kind coolant release to closed circuit, and then the coolant controlling to be more suitable for accordingly above-mentioned default mode of operation circulates in closed circuit, so that air conditioning system can preferably realize multiple-working mode in same pipeline simultaneously, improve the Energy Efficiency Ratio of air conditioning system.
Accompanying drawing explanation
Fig. 1 is the one pair of coolant air conditioners system of the present invention structural representation when being in the first mode of operation；
Fig. 2 is the one pair of coolant air conditioners system of the present invention structural representation when being in the second mode of operation；
Fig. 3 is the schematic flow sheet of one pair of coolant air conditioners system control method first embodiment of the present invention；
Fig. 4 is the schematic flow sheet of one pair of coolant air conditioners system control method the second embodiment of the present invention；
Fig. 5 is the schematic flow sheet of one pair of coolant air conditioners system control method the 3rd embodiment 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 referring to the drawings.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Seeing figures.1.and.2, Fig. 1 is the one pair of coolant air conditioners system of the present invention structural representation when being in the first mode of operation, and Fig. 2 is the one pair of coolant air conditioners system of the present invention structural representation when being in the second mode of operation.
In this preferred embodiment, one pair of coolant air conditioners system includes controller (not indicating in figure), indoor set 10 and off-premises station 20, indoor set 10 and off-premises station 20 connect formation one closed circuit by pipeline, one pair of coolant air conditioners system also includes the first branch road 21 for storing the first coolant and for storing the second branch road 22 of the second coolant, is series in above-mentioned closed circuit after the first branch road 21 is in parallel with the second branch road 22；Controller controls the first branch road 21 according to the mode of operation of one pair of coolant air conditioners system and the second branch road 22 opens or closes, thus controls the first coolant or the second coolant circulates in closed circuit.
Above-mentioned indoor set 10 includes indoor heat exchanger 11, above-mentioned off-premises station 20 includes outdoor heat exchanger 23, cross valve 24, fluid reservoir 25, compressor 26 and orifice union 27, wherein, described indoor heat exchanger 11, orifice union 27 and outdoor heat exchanger 23 are sequentially communicated, and the pipeline formed by cross valve 24 selectivity connection compressor 26 and conventional fluid reservoir 25 series connection between described indoor heat exchanger 11 and outdoor heat exchanger 23.
The position of above-mentioned first branch road 21 and the second branch road 22 can select according to actual needs, as long as being series in above-mentioned loop after in parallel with the second branch road 22 for the first branch road 21, and and off-premises station 20 and indoor set 10 between formed one circulation loop.
The mode of operation preset can be refrigeration mode, heating mode and dehumidification mode etc..Wherein, the principle of refrigeration mode and dehumidification mode is essentially identical, so when this one pair of coolant air conditioners system is set to refrigeration mode or dehumidification mode, the coolant run in system is identical.
In the present embodiment, above-mentioned first coolant is to be more beneficial for refrigeration or the coolant of dehumidifying, and above-mentioned second coolant is the coolant being more beneficial for heating, should be noted that, the component configuration mode of the first coolant and the second coolant is prior art, can select according to actual needs, be not illustrated at this.
When above-mentioned one pair of coolant air conditioners system is set to refrigeration mode or dehumidification mode, controller controls the first branch road 21 and opens, and the second branch road 22 is closed, and during now the second coolant is stored in the second branch road 22, the only first coolant circulates in above-mentioned closed circuit；When above-mentioned one pair of coolant air conditioners system is set to heating mode, controller controls the second branch road 22 and opens, and the first branch road 21 is closed, and during now the first coolant is stored in the first branch road 21, the only second coolant circulates in above-mentioned closed circuit.
The one pair of coolant air conditioners system that the present invention provides is by being provided for storing the first branch road 21 of the first coolant and for storing the second branch road 22 of the second coolant, it is series in above-mentioned closed circuit after first branch road 21 is in parallel with the second branch road 22, controller controls corresponding branch road according to the mode of operation of one pair of coolant air conditioners system and opens and closes, and then the coolant controlling to be more suitable for accordingly above-mentioned mode of operation circulates in closed circuit, so that air conditioning system can preferably realize multiple-working mode in same pipeline simultaneously, improve the Energy Efficiency Ratio of air conditioning system.
Specifically, the first branch road 21 includes the first coolant storage tank 211, the first inlet control valve 212 being located at the first coolant storage tank 211 arrival end and is located at the first discharge control valve 213 of first coolant storage tank 211 port of export；Second branch road 22 includes the second coolant storage tank 221, the second inlet control valve 222 being located at the second coolant storage tank 221 arrival end and is located at the second discharge control valve of second coolant storage tank 221 port of export；Controller controls first inlet control valve the 212, first discharge control valve the 213, second inlet control valve 222 according to the mode of operation of one pair of coolant air conditioners system and/or the second discharge control valve 223 opens or closes.
Above-mentioned first branch road 21 is opened and is i.e. represented that the first inlet control valve 212 and the first discharge control valve 213 are held open state simultaneously, and the first branch road 21 is closed and represented that the first inlet control valve 212 and the first discharge control valve 213 remain off simultaneously；Above-mentioned second branch road 22 is opened and is i.e. represented that the second inlet control valve 222 and the second discharge control valve 223 are held open state simultaneously, and the second branch road 22 is closed and represented that the second inlet control valve 222 and the second discharge control valve 223 remain off simultaneously.Should illustrate time, controller is separate to the control of first inlet control valve the 212, first discharge control valve the 213, second inlet control valve 222 and the second discharge control valve 223, such as, controller can control the first inlet control valve 212 and open, first discharge control valve 213 cuts out simultaneously, can also control the second inlet control valve 222 to open, the second discharge control valve 223 cuts out simultaneously.The control of each control valve can be configured by controller according to actual needs.
When above-mentioned one pair of coolant air conditioners system is in refrigeration mode or dehumidification mode, controller controls the first inlet control valve 212 and the first discharge control valve 213 is held open state simultaneously, and second inlet control valve 222 and the second discharge control valve 223 remain off simultaneously, during now the second coolant is stored in the second coolant storage tank 221, the only first coolant circulates in above-mentioned loop；When above-mentioned one pair of coolant air conditioners system is set to heating mode, controller controls the second inlet control valve 222 and the second discharge control valve 223 is held open state simultaneously, and first inlet control valve 212 and the first discharge control valve 213 remain off simultaneously, during now the first coolant is stored in the first coolant storage tank 211, the only second coolant circulates in above-mentioned loop.
Specifically, above-mentioned first branch road 21 and the second branch road 22 are located at the port of export of compressor 26 of off-premises station 20.
In the present embodiment, fluid reservoir 25, compressor the 26, first branch road 21 are sequentially communicated with the pipeline of the second branch road 22 formation in parallel, and first discharge control valve 213 and the second discharge control valve 223 be all connected with the D pipe of cross valve 24, the first inlet control valve 212 and the second inlet control valve 222 all ports of export with compressor 26 are connected.The S pipe of cross valve 24 is connected with fluid reservoir 25, and E pipe is connected with indoor heat exchanger 11, and C pipe is connected with outdoor heat exchanger 23.
When above-mentioned one pair of coolant air conditioners system is in refrigeration or dehumidifying mode of operation, the C pipe of cross valve 24 connects between D pipe, S pipe connects between E pipe, first branch road 21 is opened simultaneously, second branch road 22 is closed, and the first coolant circulates along indoor heat exchanger 11, fluid reservoir 25, compressor the 26, first branch road 21, outdoor heat exchanger 23, orifice union 27, the direction of indoor heat exchanger 11；When above-mentioned one pair of coolant air conditioners system is in and heats mode of operation, the D pipe of cross valve 24 connects with E pipe branch road, C pipe connects between S pipe, first branch road 21 is closed simultaneously, second branch road 22 is opened, and the second coolant circulates along indoor heat exchanger 11, orifice union 27, outdoor heat exchanger 23, fluid reservoir 25, compressor the 26, second branch road 22, the direction of indoor heat exchanger 11.
When above-mentioned one pair of coolant air conditioners system is by freezing or dehumidifying mode of operation in time heating mode of operation switching, due in the loop of this air conditioning system before flowing for the first coolant, it is thus desirable to first by after the first refrigerant recovering to the first coolant storage tank 211, then by the second coolant release in the second coolant storage tank 221 to loop；Or by heating mode of operation when refrigeration or dehumidifying mode of operation switch, due in the loop of this air conditioning system before flowing for the second coolant, it is thus desirable to first by after the second refrigerant recovering to the second coolant storage tank 221, then by the first coolant release in the first coolant storage tank 211 to loop.
The present embodiment is by being located at the port of export of compressor 26 by the first branch road 21 and the second branch road 22, therefore when reclaiming the first coolant or the second coolant, by the dynamic action of compressor 26 self, the coolant in loop can be absorbed to compressor 26, then recycling is in the first coolant storage tank 211 or the second coolant storage tank 221, coolant in loop can not only be absorbed cleanly, and saved cost.
Specifically, first inlet control valve the 212, first discharge control valve the 213, second inlet control valve 222 and/or the second discharge control valve 223 are check valve.In the present embodiment, first inlet control valve the 212, first discharge control valve the 213, second inlet control valve 222 and the second discharge control valve 223 are disposed as check valve.
Further, the air pump device (not indicating in figure) for collecting to the first branch road 21 and the second branch road 22 by the coolant in closed circuit it is provided with at the arrival end of above-mentioned first branch road 21 and the second branch road 22.In the present embodiment, the first branch road 21 and the second branch road 22 can be located at the port of export of compressor 26 according to above-described embodiment, it is also possible to other positions being located in air conditioning system loop.For example, it is possible to the first branch road 21 and the second branch road 22 are located between outdoor heat exchanger 23 and orifice union 27, or between fluid reservoir 25 and compressor 26 etc..Above-mentioned air pump device is located at the arrival end of the first branch road 21 and the second branch road 22, for the first branch road 21, air pump device is located at one end of the first inlet control valve 212 of the first branch road 21, for the second branch road 22, air pump device is located at one end of the second inlet control valve 222 of the second branch road 22.Therefore, when above-mentioned one pair of coolant air conditioners system carries out coolant switching, the most rapidly the coolant in loop can be absorbed cleanly by air pump device, improve the Energy Efficiency Ratio of air-conditioning, and improve the work efficiency of air-conditioning.
The present invention also proposes a kind of coolant method for handover control based on above-mentioned one pair of coolant air conditioners system.
With reference to the schematic flow sheet that Fig. 3, Fig. 3 are one pair of coolant air conditioners system control method first embodiment of the present invention, the coolant method for handover control that the present embodiment proposes comprises the following steps:
The coolant switching control order sent according to user obtains the target operational mode of switching；
When described target pattern is the first mode of operation, controls described second refrigerant recovering to after in the second branch road, close described second branch road and open the first branch road, control described first coolant and enter in the closed circuit of one pair of coolant air conditioners system and carry out recuperated cycle；
When described target pattern is the second mode of operation, controls described first refrigerant recovering to after in the first branch road, close described first branch road and open the second branch road, control described second coolant and enter in the closed circuit of one pair of coolant air conditioners system and carry out recuperated cycle.
Above-mentioned coolant method for handover control is specially following steps:
S10, the coolant switching control order sent according to user obtains the target operational mode of switching；
S20, it is judged that whether described target operational mode is the first mode of operation, the most then perform step S30, if it is not, then perform step S40；
S30, controls described second refrigerant recovering to after in the second branch road, closes described second branch road and open the first branch road, controls described first coolant and enters in the closed circuit of one pair of coolant air conditioners system and carry out recuperated cycle；
S40, it is judged that whether described target operational mode is the second mode of operation, the most then perform step S50, if it is not, then perform step S60；
S50, controls described first refrigerant recovering to after in the first branch road, closes described first branch road and open the second branch road, controls described second coolant and enters in the closed circuit of one pair of coolant air conditioners system and carry out recuperated cycle；
S60, keeps current operating conditions.
In the present embodiment, above-mentioned first mode of operation represents refrigeration or dehumidifying mode of operation, and the second mode of operation represents and heats mode of operation.When the target operational mode of above-mentioned switching is the first mode of operation, represents that described one pair of coolant air conditioners system current operation mode is the second mode of operation, and have received the control command being switched to the first mode of operation by the second mode of operation；When the target operational mode of above-mentioned switching is the second mode of operation, represents that described one pair of coolant air conditioners system current operation mode is the first mode of operation, and have received the control command being switched to the second mode of operation by the first mode of operation.
Above-mentioned control the first refrigerant recovering is to after the first branch road, the step opening the second branch road includes: controls described first inlet control valve and stays open and after the first discharge control valve remains turned-off the first Preset Time, close described first inlet control valve and the first discharge control valve, and open described second inlet control valve and the second discharge control valve.
Above-mentioned control the second refrigerant recovering is to after the second branch road, the step opening the first branch road includes: controls described second inlet control valve and stays open and after the second discharge control valve remains turned-off the second Preset Time, close described second inlet control valve and the second discharge control valve, and open described first inlet control valve and the first discharge control valve.
When the most not receiving the control command for being switched to the second mode of operation by the first mode of operation, when the most not receiving the control command being switched to the first mode of operation by the second mode of operation, the most above-mentioned one pair of coolant air conditioners system keeps current operating conditions.
The one pair of coolant air conditioners system that the coolant method for handover control that the present embodiment provides provides based on Fig. 1 and Fig. 2 illustrates, and the i.e. first branch road and the second branch road are located between cross valve and compressor.
The recovery time of the first coolant when above-mentioned first Preset Time is coolant switching, the recovery time of the second coolant when second Preset Time is coolant switching, first Preset Time and the second Preset Time can be configured according to actual needs, to ensure that coolant can substantially effectively be recycled in corresponding coolant storage tank depending on concrete foundation air conditioning system cooling and warming capacity of water.When reclaiming coolant by compressor operating, the refrigerant recovering time is generally 3 to 7 minutes, illustrates in the present embodiment as a example by 5 minutes.
nullWhen air conditioning system is currently at the first mode of operation，This air conditioning system internal operation first coolant，First refrigerant circulation process is as follows: the first coolant is through compressor compresses，After the air vent of compressor flows out，Owing to the second inlet control valve and second discharge control valve of the second branch road are in closed mode，Therefore the first coolant only flows into the first branch road，Flow into the first inlet control valve the most successively、First coolant storage tank and the first discharge control valve，It is then passed through cross valve，Connect between C pipe owing to the D of cross valve manages，Connect between S pipe and E pipe，Therefore the first coolant is by flowing into outdoor heat exchanger after cross valve，After carrying out cold and hot exchange with outdoor air by forced-convection heat transfer in outdoor heat exchanger，Heat is walked by outdoor air，Then the first coolant flows into orifice union through outdoor heat exchanger lateral line again，And flow into indoor heat exchanger，After first coolant carries out cold and hot exchange with indoor air in indoor heat exchanger，First coolant takes away the heat of the air of indoor，Thus realize the effect to indoor environment refrigeration，Afterwards，First coolant flows into fluid reservoir through cross valve again，And sucked by the air inlet of compressor，Thus complete a cyclic process，So go round and begin again，Realize refrigeration or dehumidification function.
When the target operational mode that described one pair of coolant air conditioners system obtains is the second mode of operation, i.e. when described one pair of coolant air conditioners system receives the control command being switched to the second mode of operation by the first mode of operation, before responding this control command, first inlet control valve and the first discharge control valve are in opening, second inlet control valve and the second discharge control valve are in closed mode, and the D pipe of cross valve connects between C pipe, connect between S pipe and E pipe；After responding this control command, then controller controls the first discharge control valve and remains turned-off and other control valve states are constant, during now the first coolant is gradually recycled to the first coolant storage tank, after the first discharge control valve remains turned-off the first Preset Time, then close the first inlet control valve, open the second inlet control valve and the second discharge control valve simultaneously；Above-mentioned control air conditioning system enters the second mode of operation and i.e. represents to manage the D of cross valve and connect between E pipe, and C pipe connects between S pipe, and therefore, the second coolant discharges in the loop to air conditioning system, and air conditioning system is run in the second operation mode.
nullWhen air conditioning system is currently at the second mode of operation，This air conditioning system internal operation second coolant，Second refrigerant circulation process is as follows: the second coolant is through compressor compresses，After the air vent of compressor flows out，Owing to the first inlet control valve and first discharge control valve of the first branch road are in closed mode，Therefore the second coolant only flows into the second branch road，Flow into the second inlet control valve the most successively、Second coolant storage tank and the second discharge control valve，Then cross valve is passed through，Connect between E pipe owing to the D of cross valve manages，C pipe connects between S pipe，Therefore the second coolant is by flowing into indoor heat exchanger after cross valve，After carrying out cold and hot exchange with indoor air by forced-convection heat transfer in indoor heat exchanger，Heat is taken away by room air，Thus realize the effect that indoor environment is heated，Then the second coolant flows into orifice union through indoor heat exchanger lateral line again，And flow into outdoor heat exchanger，After carrying out cold and hot exchange with outdoor air in outdoor heat exchanger，Second coolant takes away the heat of outdoor air，Afterwards，Second coolant flows into fluid reservoir through cross valve again，And sucked by the air inlet of compressor，Thus complete a cyclic process，So go round and begin again，Realize heat-production functions.
When the target operational mode that described one pair of coolant air conditioners system obtains is the first mode of operation, i.e. when described one pair of coolant air conditioners system receives the control command being switched to the first mode of operation by the second mode of operation, before responding this control command, second inlet control valve and the second discharge control valve are in opening, first inlet control valve and the first discharge control valve are in closed mode, and the D pipe of cross valve connects between E pipe, and C pipe connects between S pipe；After responding this control command, then controller controls the second discharge control valve and remains turned-off and other control valve states are constant, during now the second coolant is gradually recycled to the second coolant storage tank, after the second discharge control valve remains turned-off the second Preset Time, then close the second inlet control valve, open the first inlet control valve and the first discharge control valve simultaneously；Above-mentioned control air conditioning system enters the first mode of operation and i.e. represents to manage the D of cross valve and connect between C pipe, and connecting between S pipe and E pipe, therefore, the first coolant discharges in the loop to air conditioning system, and air conditioning system is run in the first operation mode.
The one pair of coolant air conditioners system coolant method for handover control that the present invention proposes, when the target operational mode obtained is the second mode of operation, first after controlling in the first refrigerant recovering to the first branch road, close the first branch road and open the second branch road, then controlling the closed circuit of the second coolant entrance one pair of coolant air conditioners system carries out recuperated cycle；When the target operational mode obtained is the first mode of operation, after first controlling in the second refrigerant recovering to the second branch road, closes the second branch road and open the first branch road, then controlling the closed circuit of the first coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.Above-mentioned coolant method for handover control is according in the coolant switching control instruction corresponding refrigerant recovering of control to respective branch, and then control above-mentioned loop only exists a kind of coolant being more suitable for presetting mode of operation and circulate in the loop, so that air conditioning system can preferably realize multiple-working mode in same pipeline simultaneously, improve the Energy Efficiency Ratio of air conditioning system.
With reference to the schematic flow sheet that Fig. 4, Fig. 4 are one pair of coolant air conditioners system control method the second embodiment of the present invention.Based on above-mentioned first embodiment, the present invention also proposes the second embodiment of coolant method for handover control.Second embodiment is unlike first embodiment, it is described when described target pattern is the second mode of operation, control described first refrigerant recovering to after in the first branch road, closing described first branch road and open the second branch road, the step controlling to carry out in the closed circuit of described second coolant entrance one pair of coolant air conditioners system recuperated cycle specifically includes:
When described target pattern is the second mode of operation, and the ambient temperature residing for described off-premises station less than or equal to the first preset temperature time, control described first refrigerant recovering to after in the first branch road, close described first branch road and open the second branch road, controlling the closed circuit of described second coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.
Coolant method for handover control that the present embodiment provides particularly as follows: perform before above-mentioned steps S50 further comprising the steps of:
S70, it is judged that the ambient temperature residing for described off-premises station whether less than or equal to the first preset temperature, the most then performs step S50, if it is not, then perform step S60.
The above-mentioned first general value of preset temperature is 10 to 17 degrees Celsius, and in the present embodiment, the first preset temperature is set to 15 degrees Celsius.
It should be noted that, when the ambient temperature residing for above-mentioned off-premises station is more than the first preset temperature, and have received coolant switching control order, then it is assumed that the control instruction that user sends is maloperation, and therefore air conditioning system still keeps current operating conditions.
The present embodiment is by judging whether the ambient temperature residing for off-premises station is less than or equal to the first preset temperature, in order to judge the most suitable heating mode (i.e. air conditioning system the most suitably enters the second mode of operation) of current outdoor temperature, prevent and cause air conditioning system switching working mode continually due to user misoperation, and then switch coolant continually, extend the service life of air conditioning system.
Further, referring once again to Fig. 4, when described target pattern is the first mode of operation, control described second refrigerant recovering to after in the second branch road, closing described second branch road and open the first branch road, the step controlling to carry out in the closed circuit of described first coolant entrance one pair of coolant air conditioners system recuperated cycle specifically includes:
When described target pattern is the first mode of operation, and the ambient temperature residing for described off-premises station more than or equal to the second preset temperature time, control described second refrigerant recovering to after in the second branch road, close described second branch road and open the first branch road, controlling the closed circuit of described first coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.
The coolant method for handover control that the present embodiment provides is particularly as follows: also included before performing step S30:
S80, it is judged that the ambient temperature residing for described off-premises station whether more than or equal to the second preset temperature, the most then performs step S30, if it is not, then perform step S60.
The above-mentioned second general value of preset temperature is 18 to 26 degrees Celsius, and in the present embodiment, the second preset temperature is set to 18 degrees Celsius.
It should be noted that, when the ambient temperature residing for above-mentioned off-premises station is less than the second preset temperature, and have received coolant switching control order, then it is assumed that the control instruction that user sends is maloperation, and therefore air conditioning system still keeps current operating conditions.
The present embodiment is by judging whether the ambient temperature residing for off-premises station is more than or equal to the second preset temperature, in order to judge the most suitable refrigeration mode of current outdoor temperature or dehumidification mode (i.e. air conditioning system the most suitably enters the second mode of operation), prevent and cause air conditioning system switching working mode continually due to user misoperation, and then switch coolant continually, extend the service life of air conditioning system.
With reference to the schematic flow sheet that Fig. 5, Fig. 5 are coolant method for handover control the 3rd embodiment of the present invention.Based on above-mentioned second embodiment, the present invention also proposes the 3rd embodiment of coolant method for handover control.3rd embodiment is unlike the second embodiment, it is described when described target pattern is the second mode of operation, control described first refrigerant recovering to after in the first branch road, closing described first branch road and open the second branch road, the step controlling to carry out in the closed circuit of described second coolant entrance one pair of coolant air conditioners system recuperated cycle specifically includes:
When the ambient temperature residing for described target pattern is the second mode of operation, described off-premises station is more than the first preset temperature and when receiving the number of times of described coolant switching control order more than or equal to the first predetermined times, control described first refrigerant recovering to after in the first branch road, close described first branch road and open the second branch road, controlling the closed circuit of described second coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.
The coolant method for handover control that the present embodiment provides is particularly as follows: described step S70 specifically includes:
S71, it is judged that the ambient temperature residing for described off-premises station whether less than or equal to the first preset temperature, the most then performs step S50, if it is not, then perform step S72；
S72, it is judged that whether the number of times receiving described coolant switching control order is more than or equal to the first predetermined times, the most then perform step S50, if it is not, then perform step S60.
In the present embodiment, the first predetermined times is set to twice, and in other embodiments, the first predetermined times is it can also be provided that more than twice, in this no limit.When the ambient temperature residing for off-premises station is more than the first preset temperature, if user is double or repeatedly have issued by the control command of the first working mode change to the second mode of operation, then it is shown to be user's real pattern switching demand, rather than maloperation, therefore air conditioning system automatically switches to the mode of operation needed for user according to the wish of user, improves user and uses the degree of convenience of air-conditioning.
Further, referring once again to Fig. 5, it is described when described target pattern is the first mode of operation, control described second refrigerant recovering to after in the second branch road, closing described second branch road and open the first branch road, the step controlling to carry out in the closed circuit of described first coolant entrance one pair of coolant air conditioners system recuperated cycle specifically includes:
When described target pattern is that the ambient temperature residing for the first mode of operation, described off-premises station is less than the second preset temperature, and when receiving the number of times of described coolant switching control order more than or equal to the second predetermined times, control described second refrigerant recovering to after in the second branch road, close described second branch road and open the first branch road, controlling the closed circuit of described first coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.
The coolant method for handover control that the present embodiment provides is particularly as follows: described step S80 specifically includes:
S81, it is judged that the ambient temperature residing for described off-premises station whether more than or equal to the second preset temperature, the most then performs step S30, if it is not, then perform step S82；
S82, it is judged that the number of times of described coolant switching control order whether more than or equal to the second predetermined times, the most then performs step S30, if it is not, then perform step S60.
In the present embodiment, the second predetermined times is set to twice, and in other embodiments, the second predetermined times is it can also be provided that more than twice, in this no limit.When the ambient temperature residing for off-premises station is less than the second preset temperature, if user is double or repeatedly have issued by the control command of the second working mode change to the first mode of operation, then it is shown to be user's real pattern switching demand, rather than maloperation, therefore air conditioning system automatically switches to the mode of operation needed for user according to the wish of user, improves user and uses the degree of convenience of air-conditioning.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the scope of patent protection of the present invention.
Claims (9)
1. an one pair of coolant air conditioners system, including controller, compressor, indoor set and off-premises station,
Described compressor, indoor set and described off-premises station connect formation one closed circuit by pipeline, and its feature exists
The first branch road for storing the first coolant is also included and for storing the in, described one pair of coolant air conditioners system
Second branch road of two coolant, be series at after described first branch road and described second branch circuit parallel connection described in loop back
Lu Zhong；Described controller according to the mode of operation of described one pair of coolant air conditioners system control described first branch road and
Second branch road opens or closes, thus controls described first coolant or the second coolant in described closed circuit
Circulate；Described first branch road and the second branch road are located at the port of export of described compressor；Described control
Device is used for when switching working mode, after controlling the branch road that the refrigerant recovering in previous cycle loop is the most corresponding,
Control the coolant in another branch road again to enter in closed circuit.
2. one pair of coolant air conditioners system as claimed in claim 1, it is characterised in that
Described first branch road includes the first coolant storage tank, is located at described first coolant storage tank arrival end
First inlet control valve and the first discharge control valve being located at the described first coolant storage tank port of export；
Described second branch road includes the second coolant storage tank, is located at described second coolant storage tank arrival end
Second inlet control valve and the second discharge control valve being located at the described second coolant storage tank port of export；
Described controller controls described first in-let dimple according to the mode of operation of described one pair of coolant air conditioners system
Valve, the first discharge control valve, the second inlet control valve and/or the second discharge control valve open or close.
3. one pair of coolant air conditioners system as claimed in claim 2, it is characterised in that described first branch road and
It is provided with at the arrival end of the second branch road for the coolant in described closed circuit is collected to described first branch road
With the air pump device in the second branch road.
4. one pair of coolant air conditioners system as claimed in claim 2, it is characterised in that described first entrance control
Valve processed, the first discharge control valve, the second inlet control valve and/or the second discharge control valve are check valve.
5. a control method for the one pair of coolant air conditioners system described in any one of Claims 1-4, it is special
Levy and be, comprise the following steps:
The coolant switching control order sent according to user obtains the target operational mode of switching；
When described target pattern is the first mode of operation, control described second refrigerant recovering to the second branch road
After in, close described second branch road and open the first branch road, controlling described first coolant and enter double-refrigerant sky
The closed circuit of adjusting system carries out recuperated cycle；
When described target pattern is the second mode of operation, control described first refrigerant recovering to the first branch road
After in, close described first branch road and open the second branch road, controlling described second coolant and enter double-refrigerant sky
The closed circuit of adjusting system carries out recuperated cycle.
6. control method as claimed in claim 5, it is characterised in that when described target pattern is second
During mode of operation, control described first refrigerant recovering to after in the first branch road, close described first branch road also
Open the second branch road, control the closed circuit of described second coolant entrance one pair of coolant air conditioners system changes
The step of thermal cycle specifically includes:
When described target pattern is the second mode of operation, and the ambient temperature residing for described off-premises station less than or
During equal to the first preset temperature, control described first refrigerant recovering to after in the first branch road, close described
One branch road also opens the second branch road, controls described second coolant and enters the closed circuit of one pair of coolant air conditioners system
In carry out recuperated cycle.
7. control method as claimed in claim 5, it is characterised in that when described target pattern is second
During mode of operation, control described first refrigerant recovering to after in the first branch road, close described first branch road also
Open the second branch road, control the closed circuit of described second coolant entrance one pair of coolant air conditioners system changes
The step of thermal cycle specifically includes:
When described target pattern is that the ambient temperature residing for the second mode of operation, described off-premises station is more than first
Preset temperature and when receiving the number of times of described coolant switching control order more than or equal to the first predetermined times,
Control described first refrigerant recovering to after in the first branch road, close described first branch road and open the second branch road,
Control the closed circuit of described second coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.
8. control method as claimed in claim 5, it is characterised in that when described target pattern is first
During mode of operation, control described second refrigerant recovering to after in the second branch road, close described second branch road also
Open the first branch road, control the closed circuit of described first coolant entrance one pair of coolant air conditioners system changes
The step of thermal cycle specifically includes:
When described target pattern is the first mode of operation, and the ambient temperature residing for described off-premises station more than or
During equal to the second preset temperature, control described second refrigerant recovering to after in the second branch road, close described
Two branch roads also open the first branch road, control described first coolant and enter the closed circuit of one pair of coolant air conditioners system
In carry out recuperated cycle.
9. control method as claimed in claim 5, it is characterised in that when described target pattern is first
During mode of operation, control described second refrigerant recovering to after in the second branch road, close described second branch road also
Open the first branch road, control the closed circuit of described first coolant entrance one pair of coolant air conditioners system changes
The step of thermal cycle specifically includes:
When described target pattern is that the ambient temperature residing for the first mode of operation, described off-premises station is less than second
Preset temperature, and when the number of times receiving described coolant switching control order is more than or equal to the second predetermined times,
Control described second refrigerant recovering to after in the second branch road, close described second branch road and open the first branch road,
Control the closed circuit of described first coolant entrance one pair of coolant air conditioners system carries out recuperated cycle.
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| CN107264222B (en) * | 2017-06-08 | 2019-06-07 | 珠海格力电器股份有限公司 | A kind of control method of air-conditioning system, device and air-conditioning system |
| CN107859623A (en) * | 2017-10-23 | 2018-03-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigeration system and air conditioner |
| CN109520091B (en) * | 2018-11-22 | 2020-10-20 | 广东美的制冷设备有限公司 | Cooling device heat dissipation control method and device, cooling device and storage medium |
| CN112682920B (en) * | 2019-10-17 | 2022-05-17 | 广东美的制冷设备有限公司 | Refrigerant recovery method, multi-split air conditioner system and computer readable storage medium |
| CN114659285A (en) * | 2022-03-31 | 2022-06-24 | 珠海格力电器股份有限公司 | Dual-refrigerant air conditioning system and control method thereof |
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| ITPI20110050A1 (en) * | 2011-04-29 | 2012-10-30 | Ecotechnics S P A | BI-FLUID EQUIPMENT FOR RECOVERY AND REGENERATION OF REFRIGERANT FLUIDS AND ITS OPERATING METHOD |
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| CN101326410A (en) * | 2005-12-07 | 2008-12-17 | 开利公司 | Multiple-pipeline refrigeration system using differ refrigerant |
| CN101346592A (en) * | 2005-12-28 | 2009-01-14 | 夏普株式会社 | Heat pump hot water supply device |
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