CN203396147U - Air source heat pump set - Google Patents
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- CN203396147U CN203396147U CN201320380108.9U CN201320380108U CN203396147U CN 203396147 U CN203396147 U CN 203396147U CN 201320380108 U CN201320380108 U CN 201320380108U CN 203396147 U CN203396147 U CN 203396147U
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Abstract
The utility model discloses an air source heat pump set. The air source heat pump set comprises a four-way valve, an indoor heat exchanger, outdoor heat exchangers and a throttling gear, wherein two of four circulation ports of the four-way valve comprise a first circulation port and a second circulation port; at least two outdoor heat exchangers are arranged, each outdoor heat exchanger is communicated with a first parallel branch, a second parallel branch, a third parallel branch and a fourth parallel branch; the first parallel branch of each outdoor heat exchanger is communicated with the first circulation port of the four-way valve through a first main after parallel connection, the second parallel branch of each outdoor heat exchanger is communicated with the second circulation port of the four-way valve through a second main after the parallel connection, the third parallel branch of each outdoor heat exchanger is communicated with the throttling gear through a third main after the parallel connection, and the fourth parallel branch of each outdoor heat exchanger is communicated with the throttling gear through a fourth main after the parallel connection; each parallel branch is provided with a branch control valve used for controlling the corresponding parallel branch to be opened or closed. The heating, refrigeration and heating for defrosting of the heat pump set can be realized by controlling the states of the branch control valves.
Description
Technical field
The utility model belongs to air source heat pump technical field, is specifically related to a kind of net for air-source heat pump units.
Background technology
In air-conditioning, floor heating, hot-water heating and energy recovery field, the net for air-source heat pump units of using realize corresponding thermal energy exchange more at present.General net for air-source heat pump units comprise compressor, cross valve, indoor heat exchanger, outdoor heat exchanger and be arranged in indoor heat exchanger and outdoor heat exchanger between throttling arrangement.During refrigeration, cross valve action, the high pressure superheated steam that compressor is exported enters in outdoor heat exchanger (as condenser) carries out heat exchange with outdoor air, cold-producing medium is condensed into liquid after emitting heat, refrigerant liquid through throttling arrangement laggard enter in indoor heat exchanger (as evaporimeter) carry out heat exchange with room air, cold-producing medium absorbs heat to evaporate and becomes saturated low pressure refrigerant vapor in indoor heat exchanger, gets back to compressor again compressed, so far completes kind of refrigeration cycle one time.When heating, cross valve action, the high pressure superheated steam that compressor is exported enters in indoor heat exchanger (as condenser) carries out heat exchange with room air, cold-producing medium is condensed into liquid after emitting heat, refrigerant liquid through throttling arrangement laggard enter in outdoor heat exchanger (as evaporimeter) carry out heat exchange with outdoor air, cold-producing medium absorbs heat to evaporate and becomes saturated low pressure refrigerant vapor in outdoor heat exchanger, get back to compressor again compressed, so far complete and once heat circulation.Because when net for air-source heat pump units heats in the winter time, the in the situation that of, high humidity low in outdoor temperature, in outdoor heat exchanger, flow through cold-producing medium absorption chamber outer air heat time easily cause outdoor heat exchanger to occur frosting, affect heating effect, for guaranteeing normally heating of net for air-source heat pump units, need to defrost to outdoor heat exchanger.During defrosting, cross valve commutation, the high pressure superheated steam of compressor output enters in outdoor heat exchanger (as condenser) carries out heat exchange to defrost with outdoor air, cold-producing medium is condensed into liquid after emitting heat, refrigerant liquid through throttling arrangement laggard enter in indoor heat exchanger (as evaporimeter) carry out heat exchange with room air, cold-producing medium absorbs heat to evaporate and becomes saturated low pressure refrigerant vapor in indoor heat exchanger, get back to compressor again compressed, and then reach the object of defrosting.Caloric receptivity and compressor work sum that above-mentioned outdoor heat exchanger defrosting institute calorific requirement is indoor heat exchanger, this Defrost mode is because the caloric receptivity of indoor heat exchanger from indoor environment is less, defrosting heat relative deficiency, defrosting speed is slow, the time is long, defrosting effect is bad, because will be from indoor environment draw heat when defrosting, this will cause indoor temperature to decline simultaneously.
For overcome the above-mentioned inconvenience that adopts indoor heat exchanger to bring as evaporimeter in defrost process, a kind of Air-source Heat Pump air-conditioning is disclosed in the Chinese invention patent application Publication Specification that is CN401382351A at application publication number, comprise a compressor, a cross valve, indoor heat exchanger and be arranged on the first outdoor outdoor heat exchanger and the second outdoor heat exchanger, wherein, cross valve has four communication port, wherein, wherein two communication port in four communication port are communicated with import and the outlet of compressor respectively, one of two other communication port is communicated with interior heat exchanger and two outdoor heat exchangers by branch road, another is communicated with two outdoor heat exchangers by branch road, and on these branch roads, be provided with respectively control valve, each control valve is arranged between compressor and outdoor heat exchanger.On the pipeline being connected with the first outdoor heat exchanger at indoor heat exchanger, be provided with first throttle device, and on the pipeline being connected with the second outdoor heat exchanger at indoor heat exchanger, be provided with the second throttling arrangement, meanwhile, between two outdoor heat exchangers, be connected with the 3rd throttling arrangement.At air conditioner refrigerating or while heating, by controlling the break-make of the control valve on corresponding branch road, make two outdoor heat exchangers in parallel, two in parallel outdoor heat exchangers are simultaneously as condenser (during air conditioner refrigerating) or evaporimeter (during air-conditioning heating), and cold-producing medium is according to the refrigeration of conventional air-conditioning system or heat and circulate.And when needs defrost to the first outdoor heat exchanger, by controlling the break-make of the control valve on corresponding branch road, two outdoor heat exchangers are connected, the first outdoor heat exchanger is used as condenser, the second outdoor heat exchanger is used as evaporimeter, now two outdoor heat exchangers are communicated with to form heating and defrosting circulation with cross valve, the high-temperature high-pressure refrigerant steam of compressor output is divided into two parts and enters two refrigerant tubings, a part enters in indoor heat exchanger, another part enters in the first outdoor heat exchanger to be defrosted and then provides defrosting heat for the first outdoor heat exchanger, the condensed liquid of discharging from the first outdoor heat exchanger is after the 3rd throttling arrangement throttling and the liquid of discharging from indoor heat exchanger converges, be sent in the second outdoor heat exchanger as evaporimeter, like this, long-pending frost on the first outdoor heat exchanger just can be melted, reach the object of defrosting.In like manner can defrost to the second outdoor heat exchanger.
But in above-mentioned air source heat pump air-conditioner, because control by the control valve being arranged between cross valve and two outdoor heat exchangers, net for air-source heat pump units when work control model is single, and source pump function singleness can not adapt to the multi-functional demand of net for air-source heat pump units.
Utility model content
The purpose of this utility model is to provide a kind of net for air-source heat pump units, the single technical problem of control model while working to solve net for air-source heat pump units of the prior art.
For achieving the above object, the technical scheme of net for air-source heat pump units provided by the utility model is: net for air-source heat pump units, comprise compressor, cross valve, indoor heat exchanger, outdoor heat exchanger and be arranged in indoor heat exchanger and described outdoor heat exchanger between throttling arrangement, wherein two communication port in four communication port of cross valve are communicated with import and the outlet of compressor respectively, two other communication port is first-class port and second port, indoor heat exchanger is communicated with the first-class port of cross valve by Wu Zong road, indoor heat exchanger is communicated with throttling arrangement by Liu Zong road, described outdoor heat exchanger is at least furnished with two, on each outdoor heat exchanger, be all communicated with first, second, the 3rd, the 4th parallel branch, the first parallel branch parallel connection of each outdoor heat exchanger is communicated with the first-class port of cross valve by first total road afterwards, the second parallel branch parallel connection of each outdoor heat exchanger is communicated with the second port of cross valve by second total road afterwards, the 3rd parallel branch parallel connection of each outdoor heat exchanger is communicated with throttling arrangement by San Zong road afterwards, the 4th parallel branch parallel connection of each outdoor heat exchanger is communicated with throttling arrangement by Si Zong road afterwards, in each parallel branch, be provided with for controlling the branch road control valve of corresponding parallel branch break-make, described throttling arrangement adopts following wherein a kind of structure:
(1) throttling arrangement comprises and is arranged on the first throttle device between He Sizong road, San Zong road and is arranged on the second flow controller between the 3rd He Liuzong road, ,Si Zong road;
(2) throttling arrangement comprises the single flow controller for Ji Liuzong road, ,Si Zong road, Yu Sanzong road is communicated with and cold-producing medium that He Liuzong road, ,Si Zong road, Jing Sanzong road is sent here carries out throttling expansion processing.
Single flow controller in described throttling arrangement is the throttle expansion valve with input port and delivery outlet, the input port of throttle expansion valve is communicated with by the first input branch road Yu Liuzong road, its delivery outlet is communicated with by the first output branch road Yu Liuzong road, one of them total road in He Sizong road, San Zong road is communicated with the input port of throttle expansion valve by the second input branch road, by the second output branch road, be communicated with the delivery outlet of throttle expansion valve, the total road of another one in He Sizong road, San Zong road is communicated with the delivery outlet of throttle expansion valve by the 3rd output branch road, described two input branch roads are provided with the input control valve of controlling the conducting of corresponding input branch road when through input Zhi Luxiang throttle expansion valve input cold-producing medium, on described the first output branch road and the second output output branch road, be respectively equipped with and when an output route throttle expansion valve is outwards sent cold-producing medium, controlling the output control valve of corresponding output branch road conducting.
Described input control valve is input check valve, and described output control valve is output one-way valve.
Described the first output branch road and the second output branch road are exported total road by cooling and warming and are communicated with the delivery outlet of throttle expansion valve, and this cooling and warming is exported and on total road, is provided with defrosting control valve.
Each described branch road control valve and defrosting control valve are magnetic valve, described source pump also comprises for detection of each outdoor heat exchanger frosting situation to control the defrosting detection control system of each magnetic valve action, defrosting detects that control system comprises control module and for respectively each outdoor heat exchanger being carried out the temperature-sensing probe of temperature detection, and control module has signal input part for being electrically connected with the signal output part of temperature-sensing probe and signal output part for being connected with each solenoid control.
The first described input branch road and the second input branch road are inputted total road by cooling and warming and are communicated with the input port of described throttle expansion valve, at cooling and warming, input on total road and are serially connected with successively fluid reservoir, filter and liquid-sighting glass according to refrigerant flow direction in inputting total road.
Described source pump comprises outdoor frame, and described outdoor heat exchanger is all installed in outdoor frame, between every adjacent two outdoor heat exchangers, is provided with demarcation strip.
Usefulness of the present utility model is: when air provided by the utility model is eyed pump assembly work covetously, can control corresponding branch road conducting and disconnection by the branch road control valve that is arranged between cross valve and outdoor heat exchanger and be arranged between outdoor heat exchanger and throttling arrangement, by controlling the break-make of first, second, third, fourth parallel branch, control the different mode of communicating of cross valve, each outdoor heat exchanger, throttling arrangement and indoor heat exchanger, and then realize heat-production functions, refrigerating function and the heating and defrosting function of source pump.And each outdoor heat exchanger of above-mentioned source pump has first, second, third, fourth parallel branch respectively, when dismounting outdoor heat exchanger in source pump, only need to control break-make, the second parallel branch and second total road break-make on the first parallel branch and first total road, the break-make on the 3rd parallel branch Yu Sanzong road and the break-make of controlling the 4th parallel branch Yu Sizong road, tear account maintenance open all more convenient, and can not affect the normal operation of source pump.And, when outdoor heat exchanger more to such an extent as to while surpassing three, when needs defrost to outdoor heat exchanger, can choose at least one outdoor heat exchanger and defrost by controlling the break-make of first, second, third, fourth parallel branch, now, corresponding optionally get at least one outdoor heat exchanger as evaporimeter so that the outdoor heat exchanger of choosing is defrosted, its control model is more, can need to realize several functions according to applying.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of net for air-source heat pump units provided by the utility model;
Fig. 2 is two outdoor heat exchanger scheme of installations in Fig. 1;
Fig. 3 is work schematic diagram when net for air-source heat pump units heats shown in Fig. 1;
Work schematic diagram when Fig. 4 is the refrigeration of net for air-source heat pump units shown in Fig. 1;
Work schematic diagram when Fig. 5 is net for air-source heat pump units shown in Fig. 1 to the first outdoor heat exchanger defrosting;
Work schematic diagram when Fig. 6 is net for air-source heat pump units shown in Fig. 1 to the second outdoor heat exchanger defrosting;
Fig. 7 is furnished with the structural representation of the embodiment of three outdoor heat exchangers in net for air-source heat pump units provided by the utility model;
(in accompanying drawing, arrow is depicted as refrigerant flow direction).
The specific embodiment
As shown in Figure 1 and Figure 2, a kind of embodiment of net for air-source heat pump units, net for air-source heat pump units in this embodiment comprise compressor 1, cross valve 2, indoor heat exchanger 24, the first outdoor heat exchanger 8, the second outdoor heat exchanger 9 and be arranged in indoor heat exchanger and each outdoor heat exchanger between throttling arrangement, indoor heat exchanger 24 is communicated with cross valve 2, by the 6th branch road 600, is communicated with throttling arrangement by the 5th branch road 500.Two outdoor heat exchangers in the present embodiment are installed in outdoor frame 107, are provided with demarcation strip 108 between two outdoor heat exchangers.
Compressor 1 is provided with import and outlet, on cross valve 2, there is first-class port a, second port b, the 3rd communication port c and the 4th communication port d, wherein, the 3rd communication port c of cross valve is communicated with the import of compressor 1 by gas-liquid separator 3, the 4th communication port d of cross valve 2 is communicated with the outlet of compressor 1, and the first-class port a of cross valve 2 is communicated with indoor heat exchanger 24 by Wu Zong road 500.Meanwhile, on the first-class port a of cross valve 2, be also communicated with first total road 100, on the second port b of cross valve 2, be communicated with second total road 200.
On two outdoor heat exchangers, be all communicated with the first parallel branch 101, the second parallel branch 102, the 3rd parallel branch 103 and the 4th parallel branch 104, wherein, after the first parallel branch 101 parallel connections of two outdoor heat exchangers, by first total road 100, be communicated with the first-class port a of cross valve 2, in two first parallel branches 101, correspondence is provided with for controlling branch road control valve 6 and the branch road control valve 7 of corresponding parallel branch break-make respectively.After the second parallel branch 102 parallel connections of two outdoor heat exchangers, by second total road 200, be communicated with the second port b of cross valve 2, in two second parallel branches 102, correspondence is provided with for controlling branch road control valve 4 and the branch road control valve 5 of corresponding parallel branch break-make respectively.After the 3rd parallel branch 103 parallel connections of two outdoor heat exchangers, by San Zong road 300, be communicated with throttling arrangement, two the 3rd parallel branches 103 are herein communicated with by threeway knockout 14 Yu Sanzong roads 300, and in two the 3rd parallel branches 103, correspondence is provided with for controlling branch road control valve 12 and the branch road control valve 13 of corresponding parallel branch break-make respectively.After the 4th parallel branch 104 parallel connections of two outdoor heat exchangers, by Si Zong road 400, be communicated with throttling arrangement, in two the 4th parallel branches 104, correspondence is provided with for controlling branch road control valve 10 and the branch road control valve 11 of corresponding parallel branch break-make respectively.
Above-mentioned throttling arrangement comprises the throttle expansion valve 22 with input port and delivery outlet, wherein, throttle expansion valve 22 input port is communicated with cooling and warming and inputs total road 700, cooling and warming is inputted total road 700 and is communicated with by the first input branch road 401 Yu Liuzong roads 600, cooling and warming is inputted total road 700 and is communicated with by the second input branch road 402 Yu Sanzong roads 300, on two input branch roads, move to be respectively provided with and when input Zhi Luxiang throttle expansion valve input cold-producing medium, control the corresponding input control valve of inputting branch road conducting, two input control valves are respectively the first input check valve 17 and the second input check valve 15, at cooling and warming, input on total road 700 and be serially connected with successively fluid reservoir 19 according to refrigerant flow direction, filter 20 and liquid-sighting glass 21.
The delivery outlet of throttle expansion valve 22 is communicated with cooling and warming and exports total road 800, cooling and warming is exported total road 800 and is communicated with by the first output branch road 403 Yu Liuzong roads 600, cooling and warming is exported total road 800 and is communicated with by the second output branch road 404 Yu Sanzong roads 300, this cooling and warming is exported and on total road 800, is provided with defrosting control valve 23, on the first output branch road 403 and the second output branch road 404, be respectively equipped with and when an output route throttle expansion valve is outwards sent cold-producing medium, controlling the output control valve of corresponding output branch road conducting, two output control valves are herein respectively the first output one-way valve 18 and the second output one-way valve 16.
In addition, the delivery outlet of throttle expansion valve 22 is communicated with by the 3rd output branch road 900 Yu Sizong roads 400.
Defrosting control valve in the present embodiment and the branch road control valve being serially connected in each parallel branch are magnetic valve, source pump also comprises the detection control system of moving to control each magnetic valve for detection of the frosting situation of two outdoor heat exchangers, detect that control system comprises control module and for respectively two outdoor heat exchangers being carried out two temperature-sensing probes of temperature detection, two temperature-sensing probes are respectively the first temperature-sensing probe 31 and the second temperature-sensing probe 32, control module has the signal input part that is electrically connected for the signal output part with two temperature-sensing probes and signal output part for being connected with each solenoid control.
In the present embodiment, a side at indoor heat exchanger is also furnished with the 3rd temperature-sensing probe 33, the 3rd temperature-sensing probe is for the operating temperature of sensing indoor heat exchanger, when temperature reaches setting value, net for air-source heat pump units is no longer freezed or is heated, when and temperature surpasses or while not reaching setting value, net for air-source heat pump units starts refrigeration or heats.
Below in conjunction with Fig. 1 illustrate the net for air-source heat pump units that the present embodiment provides kind of refrigeration cycle, heat circulation and the operation principle of defrost cycle.
One, heat circulation
In heating circulation, branch road control valve 4, branch road control valve 5, branch road control valve 12,13 conductings of branch road control valve, and branch road control valve 6, branch road control valve 7, branch road control valve 10, branch road control valve 11 disconnects, 23 conductings of defrosting control valve.Compressor 1 is to cross valve 2 output high-temperature high-pressure refrigerant superheated steams, superheated steam is through the first-class port a of cross valve 2, Wu Zong road enters indoor heat exchanger 24(as condenser) in carry out heat exchange to emit heat with room air, after emitting heat, cold-producing medium is by excessively cold, cross refrigerant liquid after cold by Liu Zong road, the first input branch road, cooling and warming is inputted total road 700 and is entered throttling expansion in throttle expansion valve 22, cold-producing medium after throttling expansion becomes low-temp low-pressure gas-fluid two-phase mixture, through cooling and warming, export total road 800 again, the second output branch road 404, San Zong road 300, the 3rd parallel branch 103 enters respectively in two outdoor heat exchangers carries out heat exchange with the outer heat of absorption chamber with outdoor air, after heat outside cold-producing medium absorption chamber, become low-temperature low-pressure refrigerant steam through the second parallel branch 102, second total road 200, cross valve 2, knockout 3 returns in compressor 1, so far complete and once heat circulation.
Two, kind of refrigeration cycle
In kind of refrigeration cycle, branch road control valve 4, branch road control valve 5, branch road control valve 12,13 conductings of branch road control valve, and branch road control valve 6, branch road control valve 7, branch road control valve 10, branch road control valve 11 disconnects, 23 conductings of defrosting control valve.Compressor 1 is to cross valve 2 output high-temperature high-pressure refrigerant superheated steams, superheated steam is through the second port of cross valve 2, second total road 200, the second parallel branch 102 enters in two outdoor heat exchangers (as condenser) carries out heat exchange with outdoor air, superheated steam becomes warm refrigerant liquid in high pressure after emitting heat, refrigerant liquid is through the 3rd parallel branch 103, threeway knockout 14, San Zong road 300, the second input check valve 15, cooling and warming is inputted total road 700 and is entered throttling expansion in throttle expansion valve 22, cold-producing medium after throttling becomes low-temp low-pressure gas-fluid two-phase mixture, again through defrosting control valve 23, the second output branch road 404, Liu Zong road 600 enters indoor heat exchanger 24(as evaporimeter) in carry out heat exchange with room air, heat in absorption chamber, to indoor refrigeration, after heat in cold-producing medium absorption chamber, become low-temperature low-pressure refrigerant steam Jing Wuzong road 500, cross valve 2, knockout 3 returns in compressor 1, so far complete kind of refrigeration cycle one time.
Three, heating and defrosting circulation
The operation control strategy that adopts the first outdoor heat exchanger and the second outdoor heat exchanger to defrost respectively in the present embodiment.During concrete defrosting, according to the first temperature-sensing probe 31 and the detected temperature of the second temperature-sensing probe 32, judge the frozen condition of two outdoor heat exchangers, judge which outdoor heat exchanger frosting situation is serious and then need defrosting, if the frosting situation of two outdoor heat exchangers is all more serious, preferably the first outdoor heat exchanger 8 is defrosted.Generally, conventionally after to an outdoor heat exchanger, again another outdoor heat exchanger is defrosted.
As shown in Figure 5, when detecting the first temperature-sensing probe 31 of control system, the first outdoor heat exchanger 8 frostings to be detected serious, in the time of need to defrosting to the first outdoor heat exchanger 8, control module is controlled defrosting control valve 23 and is disconnected, branch road control valve 4, branch road control valve 12, branch road control valve 7,11 conductings of branch road control valve, branch road control valve 5, branch road control valve 13, branch road control valve 6, branch road control valve 10 disconnect.Compressor 1 is to cross valve 2 output high-temperature high-pressure refrigerant superheated steams, and superheated steam is through the second port of cross valve 2, second total road 200, the second parallel branch 102 being communicated with on the first outdoor heat exchanger 8 enters the first outdoor heat exchanger 8(as condenser) in the first outdoor heat exchanger 8 on cover frost and outdoor air carries out heat exchange to emit heat, liberated heat can melt rapidly the frost that covers on the first outdoor heat exchanger 8, after emitting heat, become warm refrigerant liquid in high pressure, the 3rd parallel branch 103 that refrigerant liquid is communicated with on the first outdoor heat exchanger 8, threeway knockout 14, San Zong road 300, the first input check valve 15, reservoir 19, filter 20, liquid-sighting glass 21 enters throttling expansion in throttle expansion valve 22, and the cold-producing medium after throttling becomes low-temp low-pressure gas-fluid two-phase mixture, then through the 3rd output branch road 900, Si Zong road 400, the 4th parallel branch being communicated with on the second outdoor heat exchanger 9 enters the second outdoor heat exchanger 9(as evaporimeter) in carry out heat exchange with outdoor air, the outer heat of absorption chamber, becomes the first parallel branch that low-temperature low-pressure refrigerant steam is linked with on the second outdoor heat exchanger 9 after the outer heat of cold-producing medium absorption chamber, first total road 100, cross valve 2, knockout 3 returns in compressor 1, so far completes a heating and defrosting circulation.
As shown in Figure 6, when detecting the second temperature-sensing probe 32 of control system, the second outdoor heat exchanger 9 frostings to be detected serious, in the time of need to defrosting to the second outdoor heat exchanger 9, control module is controlled defrosting control valve 23 and is disconnected, branch road control valve 5, branch road control valve 13, branch road control valve 6,10 conductings of branch road control valve, branch road control valve 4, branch road control valve 12, branch road control valve 7, branch road control valve 11 disconnect.Compressor 1 is to cross valve 2 output high-temperature high-pressure refrigerant superheated steams, and superheated steam is through the second port of cross valve 2, second total road 200, the second parallel branch being communicated with on the second outdoor heat exchanger 9 enters the second outdoor heat exchanger 9(as condenser) in the second outdoor heat exchanger 9 on cover frost and outdoor air carries out heat exchange to emit heat, liberated heat can melt rapidly the frost that covers on the second outdoor heat exchanger 9, after emitting heat, become warm refrigerant liquid in high pressure, the 3rd parallel branch that refrigerant liquid is communicated with on the second outdoor heat exchanger 9, threeway knockout 14, San Zong road 300, the first input check valve 15, reservoir 19, filter 20, liquid-sighting glass 21 enters throttling expansion in throttle expansion valve 22, and the cold-producing medium after throttling becomes low-temp low-pressure gas-fluid two-phase mixture, then through the 3rd output branch road 900, Si Zong road 400, the 4th parallel branch being communicated with on the first outdoor heat exchanger 8 enters the first outdoor heat exchanger 8(as evaporimeter) in carry out heat exchange with outdoor air, the outer heat of absorption chamber, becomes the first parallel branch that low-temperature low-pressure refrigerant steam is linked with on the first outdoor heat exchanger 8 after the outer heat of cold-producing medium absorption chamber, first total road 100, cross valve 2, knockout 3 returns in compressor 1, so far completes a heating and defrosting circulation.
This is in two outdoor heat exchanger defrost process, and defrosting control valve 23 disconnects, and indoor heat exchanger 24 is not worked, and can effectively reduce like this workload of compressor, improves defrosting speed and efficiency.
In above-described embodiment, when outdoor heat exchanger is defrosted, indoor heat exchanger is not worked, and can reduce like this workload of compressor.In fact, the net for air-source heat pump units that above-described embodiment provides can meet equally when defrosting heats indoor heat exchanger.For example, when needs defrost to the first outdoor heat exchanger, control module is controlled defrosting control valve 23 and is disconnected, and branch road control valve 6, branch road control valve 12, branch road control valve 5,11 conductings of branch road control valve, branch road control valve 4, branch road control valve 10, branch road control valve 7, branch road control valve 13 disconnect.Compressor 1 is to cross valve 2 output high-temperature high-pressure refrigerant superheated steams, superheated steam is divided into two-way through the first-class port of cross valve 2, wherein a Jing Wuzong road, road 500 enters indoor heat exchanger 24(as condenser) in carry out heat exchange to emit heat with room air, after emitting heat, cold-producing medium is by excessively cold, cross refrigerant liquid after cold by Liu Zong road 600, the first input branch road 401 enters cooling and warming and inputs in total road 700, other one passes by vapours through first total road 100, the first parallel branch being communicated with on the first outdoor heat exchanger 8 enters the first outdoor heat exchanger 8(as condenser) in the first outdoor heat exchanger 8 on cover frost and outdoor air carries out heat exchange to emit heat, liberated heat can melt rapidly the frost that covers on the first outdoor heat exchanger 8, after emitting heat, become warm refrigerant liquid in high pressure, refrigerant liquid is through the 3rd parallel branch, threeway knockout 14, San Zong road 300, the second input check valve 15 enters cooling and warming and inputs total road 700, cooling and warming is inputted cold-producing medium in total road through reservoir 19, filter 20, liquid-sighting glass 21 enters throttling expansion in throttle expansion valve 22, cold-producing medium after throttling becomes low-temp low-pressure gas-fluid two-phase mixture, again through the 3rd output branch road 900, Si Zong road 400, the 4th parallel branch being communicated with on the second outdoor heat exchanger 9 enters the second outdoor heat exchanger 9(as evaporimeter) in carry out heat exchange with outdoor air, the outer heat of absorption chamber, after the outer heat of cold-producing medium absorption chamber, become the second parallel branch that low-temperature low-pressure refrigerant steam is linked with on the second outdoor heat exchanger, second total road 200, cross valve 2, knockout 3 returns in compressor 1, so far complete and once heat circulation and heating and defrosting circulation.
In above-described embodiment, outdoor heat exchanger is provided with two, in other embodiments, outdoor heat exchanger also can be furnished with three as shown in Figure 7, now, on the 3rd outdoor heat exchanger increasing, be communicated with equally first, second, the 3rd, the 4th parallel branch, and the first parallel branch on the 3rd outdoor heat exchanger is communicated with first total road equally, the first parallel branch is provided with branch road control valve 41, the second parallel branch on the 3rd outdoor heat exchanger is communicated with second total road equally, the second parallel branch is provided with branch road control valve 42, the same Yu Sanzong of the 3rd parallel branch road on the 3rd outdoor heat exchanger is communicated with, in the 3rd parallel branch, be provided with branch road control valve 43, the same Yu Sizong of the 4th parallel branch road on the 3rd outdoor heat exchanger is communicated with, in the 4th parallel branch, be provided with branch road control valve 44.During net for air-source heat pump units as shown in Figure 7 refrigeration, three outdoor heat exchangers are all used as condenser, and net for air-source heat pump units is when heat, and three outdoor heat exchangers are all used as evaporimeter.When net for air-source heat pump units is freezed, three outdoor heat exchangers are all used as condenser.When needs defrost to the first outdoor heat exchanger, other two outdoor heat exchangers are all used as evaporimeter, and when needs defrost to the first outdoor heat exchanger and the second outdoor heat exchanger simultaneously, the 3rd outdoor heat exchanger can be used as evaporimeter.In other embodiments, three above outdoor heat exchangers also can be set, its connected mode is identical with the connected mode of outdoor heat exchanger in above-described embodiment.
In above-described embodiment, by detecting the control of control system to each magnetic valve, guarantee the normal switching to two outdoor heat exchanger heating and defrostings.In other embodiments, also can be by manually controlling each branch road control valve, as long as can meet the normal heating and defrosting to outdoor heat exchanger.
In above-described embodiment, input control valve on two input branch roads is input check valve, and the output control valve of two output one-way valves is output one-way valve, in other embodiments, this input control valve and output control valve can be also the magnetic valve of being controlled by control module.
In above-described embodiment, throttle expansion valve in throttling arrangement is communicated with by output branch road, Ji Sizong road, ,Liu Zong road, the corresponding Yu Sanzong road of output branch road, in other embodiments, throttling arrangement also can adopt structure of the prior art first throttle device is set between Liang Sanzong road as throttling arrangement is included in and is arranged on the second flow controller between San Zong road, the 4th total Lu Yu Liu Zong road, and it is expansion valve or capillary in technology that this first throttle device and the second flow controller can adopt existing.
In above-described embodiment, the throttle expansion valve of throttling arrangement is equivalent to single flow controller, should but flow controller for Yu Sanzong road, Ji Liuzong road, Si Zong road is communicated with and to Jing Sanzong road, the cold-producing medium that He Liuzong road, Si Zong road is sent here carries out throttling expansion processing, in other embodiments, single flow controller also can be selected capillary, single flow controller also can pass through other pipeline jointing construction Yu Sanzong road, Ji Liuzong road, Si Zong road is communicated with, as long as can guarantee the normal input and output list of the cold-producing medium flow controller when net for air-source heat pump units cooling and warming and defrosting.
The net for air-source heat pump units that the present embodiment provides can be applied in family expenses or business air conditioner, Hot water units, floor heating and other heat recovery systems.
Indoor heat exchanger in the present embodiment can adopt plate type heat exchanger, shell and tube exchanger.Double pipe heat exchanger, coil exchanger (in the pond that is laid in, water tank, underfloor), inflation type heat exchanger and fin fan type heat exchanger.
Claims (7)
1. net for air-source heat pump units, comprise compressor, cross valve, indoor heat exchanger, outdoor heat exchanger and be arranged in indoor heat exchanger and described outdoor heat exchanger between throttling arrangement, wherein two communication port in four communication port of cross valve are communicated with import and the outlet of compressor respectively, two other communication port is first-class port and second port, indoor heat exchanger is communicated with the first-class port of cross valve by Wu Zong road, indoor heat exchanger is communicated with throttling arrangement by Liu Zong road, it is characterized in that: described outdoor heat exchanger is at least furnished with two, on each outdoor heat exchanger, be all communicated with first, second, the 3rd, the 4th parallel branch, the first parallel branch parallel connection of each outdoor heat exchanger is communicated with the first-class port of cross valve by first total road afterwards, the second parallel branch parallel connection of each outdoor heat exchanger is communicated with the second port of cross valve by second total road afterwards, the 3rd parallel branch parallel connection of each outdoor heat exchanger is communicated with throttling arrangement by San Zong road afterwards, the 4th parallel branch parallel connection of each outdoor heat exchanger is communicated with throttling arrangement by Si Zong road afterwards, in each parallel branch, be provided with for controlling the branch road control valve of corresponding parallel branch break-make, described throttling arrangement adopts following wherein a kind of structure:
(1) throttling arrangement comprises and is arranged on the first throttle device between He Sizong road, San Zong road and is arranged on the second flow controller between the 3rd He Liuzong road, ,Si Zong road;
(2) throttling arrangement comprises the single flow controller for Ji Liuzong road, ,Si Zong road, Yu Sanzong road is communicated with and cold-producing medium that He Liuzong road, ,Si Zong road, Jing Sanzong road is sent here carries out throttling expansion processing.
2. net for air-source heat pump units according to claim 1, it is characterized in that: the single flow controller in described throttling arrangement is the throttle expansion valve with input port and delivery outlet, the input port of throttle expansion valve is communicated with by the first input branch road Yu Liuzong road, its delivery outlet is communicated with by the first output branch road Yu Liuzong road, one of them total road in He Sizong road, San Zong road is communicated with the input port of throttle expansion valve by the second input branch road, by the second output branch road, be communicated with the delivery outlet of throttle expansion valve, the total road of another one in He Sizong road, San Zong road is communicated with the delivery outlet of throttle expansion valve by the 3rd output branch road, described two input branch roads are provided with the input control valve of controlling the conducting of corresponding input branch road when through input Zhi Luxiang throttle expansion valve input cold-producing medium, on described the first output branch road and the second output output branch road, be respectively equipped with and when an output route throttle expansion valve is outwards sent cold-producing medium, controlling the output control valve of corresponding output branch road conducting.
3. net for air-source heat pump units according to claim 2, is characterized in that: described input control valve is input check valve, and described output control valve is output one-way valve.
4. according to the net for air-source heat pump units described in claim 2 or 3, it is characterized in that: described the first output branch road and the second output branch road are exported total road by cooling and warming and be communicated with the delivery outlet of throttle expansion valve, this cooling and warming is exported and on total road, is provided with defrosting control valve.
5. net for air-source heat pump units according to claim 4, it is characterized in that: each described branch road control valve and defrosting control valve are magnetic valve, described source pump also comprises for detection of each outdoor heat exchanger frosting situation to control the defrosting detection control system of each magnetic valve action, defrosting detects that control system comprises control module and for respectively each outdoor heat exchanger being carried out the temperature-sensing probe of temperature detection, and control module has signal input part for being electrically connected with the signal output part of temperature-sensing probe and signal output part for being connected with each solenoid control.
6. according to the net for air-source heat pump units described in claim 2 or 3, it is characterized in that: the first described input branch road and the second input branch road are inputted total road by cooling and warming and be communicated with the input port of described throttle expansion valve, at cooling and warming, input on total road and are serially connected with successively fluid reservoir, filter and liquid-sighting glass according to refrigerant flow direction in inputting total road.
7. according to the net for air-source heat pump units described in claim 1 or 2 or 3, it is characterized in that: described source pump comprises outdoor frame, described outdoor heat exchanger is all installed in outdoor frame, between every adjacent two outdoor heat exchangers, is provided with demarcation strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320380108.9U CN203396147U (en) | 2013-06-28 | 2013-06-28 | Air source heat pump set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320380108.9U CN203396147U (en) | 2013-06-28 | 2013-06-28 | Air source heat pump set |
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| CN203396147U true CN203396147U (en) | 2014-01-15 |
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| CN201320380108.9U Expired - Fee Related CN203396147U (en) | 2013-06-28 | 2013-06-28 | Air source heat pump set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224837A (en) * | 2017-12-19 | 2018-06-29 | 青岛海尔空调电子有限公司 | Air-conditioner system |
| CN115031439A (en) * | 2022-06-16 | 2022-09-09 | 江苏省华扬太阳能有限公司 | High-efficiency defrosting heat pump type large and medium air conditioning device |
-
2013
- 2013-06-28 CN CN201320380108.9U patent/CN203396147U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224837A (en) * | 2017-12-19 | 2018-06-29 | 青岛海尔空调电子有限公司 | Air-conditioner system |
| CN115031439A (en) * | 2022-06-16 | 2022-09-09 | 江苏省华扬太阳能有限公司 | High-efficiency defrosting heat pump type large and medium air conditioning device |
| CN115031439B (en) * | 2022-06-16 | 2023-07-14 | 江苏省华扬太阳能有限公司 | Heat pump type large and medium air conditioner with efficient defrosting |
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| GR01 | Patent grant | ||
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Effective date of registration: 20161017 Address after: 451191 Longhu Town, Xinzheng City, Henan Province, 107 National Road, Zhengzhou University Science Park of Zhongyuan University of Technology Patentee after: Henan Sino Swiss Refrigeration Technology Co., Ltd. Address before: 450000, 3 South Street, Nanyang Road, Henan, Zhengzhou Patentee before: Li Shuming |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20200628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |