CN204027078U - Air cooling heat pump unit - Google Patents
Air cooling heat pump unit Download PDFInfo
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- CN204027078U CN204027078U CN201420358234.9U CN201420358234U CN204027078U CN 204027078 U CN204027078 U CN 204027078U CN 201420358234 U CN201420358234 U CN 201420358234U CN 204027078 U CN204027078 U CN 204027078U
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Abstract
The purpose of this utility model is to provide a kind of air cooling heat pump unit, can be suppressed at heat source side heat exchanger and produce frosting, thereby proceed for a long time to heat running.Air cooling heat pump unit (1) possesses: make the heat pump circuit (11) of refrigerant circulation, it is provided with compressor (12), load side heat exchanger (14), expansion valve (15) and heat source side heat exchanger (16); And loop dehumidification (21), it is connected in parallel with respect to heat pump circuit (11) and expansion valve (15) and heat source side heat exchanger (16), be provided with except wet heat exchanger (23), heat source side heat exchanger (16) and all carry out heat exchange with cold-producing medium and air except wet heat exchanger (23), and with respect to air stream arranged in series, except wet heat exchanger (23) is disposed at than heat source side heat exchanger (16) by upstream side in air stream.
Description
Technical field
The utility model relates to air cooling heat pump unit.
Background technology
The air-coil (heat source side heat exchanger) of air cooling heat pump unit is used as evaporimeter in the time heating running.Heating in running, thereby the moisture that is contained in air amount solidifies in air-coil frosting.
In patent documentation 1, record following dehumidification air conditioner device, possess: coil pipe row, it is made up of dehumidify coil pipe and longitudinal arrangement is disposed at the coil pipe downstream of dehumidifying respectively a pair of frosting coil pipe; And air blast, its make forcibly air in the wind path of each coil pipe row from upstream side side flow downstream.In this dehumidification air conditioner device, can in the dehumidifying coil pipe of coil pipe row, flow to be useful on the processed air in the wind path by this dehumidifying coil pipe is cooled to the cold-producing medium that can not dehumidify in the temperature of cooling coil frosting, and flow and be useful on the cold-producing medium that frosting dehumidifies again while making by the processed air after the wind path of this dehumidifying coil pipe in the wind path by this frosting coil pipe a side of a pair of frosting coil pipe, make mobile stop the defrost running of cold-producing medium to the opposing party's frosting coil pipe, and alternately switch the running of each frosting coil pipe with official hour interval.
Patent documentation 1: TOHKEMY 2010-7954 communique
Usually, if frosting worsens in the air-coil of air cooling heat pump unit, can reduce because wind path resistance increment causes the air quantity of air amount, and hinder air-coil heat conduction.Thus, the low pressure of cold-producing medium reduces extremely, can not continue to heat running.Therefore, existing to heat in running needs to defrost termly (defrosting running), can not make the problem that continues for a long time to heat running.
In patent documentation 1, record following content: according to above-mentioned dehumidification air conditioner device, become seldom in the frosting of coil pipe row, can prevent from worsening because of the wet-out property that the reduction of dehumidifying air quantity, comprehensive frosting cause.But, in patent documentation 1, do not record dehumidifying coil pipe and a pair of frosting coil pipe and how to arrange in refrigerant loop.
Utility model content
The utility model is for having addressed the above problem, and its object is to provide one can be suppressed at heat source side heat exchanger and produces frosting, thereby continues for a long time to heat the air cooling heat pump unit of running.
Air cooling heat pump unit of the present utility model is characterised in that to possess: make the heat pump circuit of refrigerant circulation, it is provided with compressor, load side heat exchanger, expansion gear and heat source side heat exchanger; And loop dehumidification, it is connected in parallel with respect to above-mentioned heat pump circuit and above-mentioned expansion gear and above-mentioned heat source side heat exchanger, be provided with except wet heat exchanger, above-mentioned heat source side heat exchanger and the above-mentioned wet heat exchanger that removes all carry out heat exchange with cold-producing medium and air, and with respect to air stream arranged in series, the above-mentioned wet heat exchanger that removes is configured in than above-mentioned heat source side heat exchanger by upstream side in air stream.
In above-mentioned air cooling heat pump unit, preferably also possess: temperature sensor, its contrast is described to be detected by the air themperature of upstream side except wet heat exchanger downstream and than described heat source side heat exchanger; Electric expansion valve, it is arranged at than described except the top trip side of wet heat exchanger in described loop dehumidification; And control device, it controls described electric expansion valve based on described air themperature.
In above-mentioned air cooling heat pump unit, preferably also possess: temperature sensor, its refrigerant temperature to the described outlet side except wet heat exchanger detects; Electric expansion valve, is arranged in loop dehumidification described in it than described except the top trip side of wet heat exchanger; And control device, it controls described electric expansion valve based on described refrigerant temperature.
In above-mentioned air cooling heat pump unit, preferably also possess: temperature sensor, its contrast is described to be detected by the air themperature of upstream side except wet heat exchanger downstream and than described heat source side heat exchanger; The multiple open and close valves that are connected in parallel with each other, described multiple open and close valves are arranged at than described except the top trip side of wet heat exchanger or than the described wet heat exchanger downstream of removing in described loop dehumidification; And control device, it controls described multiple open and close valve based on described air themperature.
In above-mentioned air cooling heat pump unit, preferably also possess: temperature sensor, its refrigerant temperature to the described outlet side except wet heat exchanger detects; The multiple open and close valves that are connected in parallel with each other, described multiple open and close valves are arranged at than described except the top trip side of wet heat exchanger or than the described wet heat exchanger downstream of removing in described loop dehumidification; And control device, it controls described multiple open and close valve based on described refrigerant temperature.
According to the utility model, owing to can utilizing the air that enters heat source side heat exchanger except wet heat exchanger convection current to dehumidify, produce frosting so can be suppressed at heat source side heat exchanger.Therefore, air cooling heat pump unit can continue to heat running for a long time.
Brief description of the drawings
Fig. 1 is the refrigerant loop figure that the simple structure of the air cooling heat pump unit 101 of the prerequisite that becomes embodiment 1 of the present utility model is shown.
Fig. 2 is the refrigerant loop figure that the simple structure of the air cooling heat pump unit 101 of the prerequisite that becomes embodiment 1 of the present utility model is shown.
Fig. 3 is the refrigerant loop figure that the simple structure of the air cooling heat pump unit 1 of embodiment 1 of the present utility model is shown.
Fig. 4 is illustrated in the related air cooling heat pump unit 1 of embodiment 1 of the present utility model, the flow chart of an example of the flow process of the regulation processing of the electric expansion valve 22 of being carried out by control device 30.
Fig. 5 is the refrigerant loop figure that the simple structure of the related air cooling heat pump unit 2 of embodiment 2 of the present utility model is shown.
Fig. 6 is illustrated in the related air cooling heat pump unit 2 of embodiment 2 of the present utility model, the flow chart of an example of the flow process of the regulation processing of the electric expansion valve 22 of being carried out by control device 30.
Fig. 7 is the refrigerant loop figure that the simple structure of the related air cooling heat pump unit 3 of embodiment 3 of the present utility model is shown.
Fig. 8 is illustrated in the related air cooling heat pump unit 3 of embodiment 3 of the present utility model, the flow chart of an example of the flow process of the magnetic valve A24 being carried out by control device 30 and the switching processing of magnetic valve B25.
Fig. 9 is illustrated in the related air cooling heat pump unit 3 of embodiment 3 of the present utility model, the flow chart of an example of the flow process of the magnetic valve A24 being carried out by control device 30 and the switching processing of magnetic valve B25.
Figure 10 is illustrated in the related air cooling heat pump unit 3 of embodiment 3 of the present utility model, the flow chart of an example of the flow process of the magnetic valve A24 being carried out by control device 30 and the switching processing of magnetic valve B25.
Figure 11 is the refrigerant loop figure that the simple structure of the related air cooling heat pump unit 4 of embodiment 4 of the present utility model is shown.
Figure 12 is illustrated in the related air cooling heat pump unit 4 of embodiment 4 of the present utility model, the flow chart of an example of the flow process of the magnetic valve A24 being carried out by control device 30 and the switching processing of magnetic valve B25.
Figure 13 is illustrated in the related air cooling heat pump unit 4 of embodiment 4 of the present utility model, the flow chart of an example of the flow process of the magnetic valve A24 being carried out by control device 30 and the switching processing of magnetic valve B25.
Figure 14 is illustrated in the related air cooling heat pump unit 4 of embodiment 4 of the present utility model, the flow chart of an example of the flow process of the magnetic valve A24 being carried out by control device 30 and the switching processing of magnetic valve B25.
Description of reference numerals:
1,2,3,4,101 ... air cooling heat pump unit; 11 ... heat pump circuit; 12,102 ... compressor; 13,103 ... cross valve; 14,104 ... load side heat exchanger; 15,105 ... expansion valve; 16,106 ... heat source side heat exchanger; 21 ... loop dehumidification; 22 ... electric expansion valve; 23 ... except wet heat exchanger; 24 ... magnetic valve A; 25 ... magnetic valve B; 30 ... control device; 31,32 ... temperature sensor.
Detailed description of the invention
Embodiment 1.
The air cooling heat pump unit related to embodiment 1 of the present utility model describes.Air cooling heat pump unit is used as the thermal source such as conditioner or hot-water supply.First, the structure of air cooling heat pump unit of the prerequisite that becomes present embodiment is described.Fig. 1 and Fig. 2 are the refrigerant loop figure that the structure of the air cooling heat pump unit 101 of the prerequisite that becomes present embodiment is shown.Air cooling heat pump unit 101 shown in Fig. 1 has heat pump circuit, and this heat pump circuit possesses compressor 102, cross valve 103, load side heat exchanger 104 (water side heat exchanger), expansion valve 105 and heat source side heat exchanger 106 (air-coil).Compressor 102, cross valve 103, load side heat exchanger 104, expansion valve 105 and heat source side heat exchanger 106 are connected successively by refrigerant piping.Air cooling heat pump unit 101 is become and can and be heated structure corresponding to arbitrary running in running with cooling operation by the flow path that utilizes cross valve 103 and switch cold-producing medium.
While heating running, the refrigerant gas of the high pressure of discharging from compressor 102 is by cross valve 103 offered load side heat exchangers 104.The refrigerant gas of offered load side heat exchanger 104 condenses because carrying out heat exchange with the external fluid such as water or refrigerating medium, and becomes the liquid refrigerant of high pressure, and then flows into expansion valve 105.Flow into that the liquid refrigerant of expansion valve 105 is depressurized and the gas-liquid two-phase cold-producing medium that becomes low pressure, thereby flow into heat source side heat exchanger 106.The gas-liquid two-phase cold-producing medium that flows into heat source side heat exchanger 106 evaporates because carrying out heat exchange with the air amount being come by fan air blast, thereby becomes the gas refrigerant of low pressure, and is inhaled into compressor 102.
Heat when running, heat source side heat exchanger 106 is used as evaporimeter, thus the contained moisture of air amount solidify, thereby in 106 frostings of heat source side heat exchanger.If frosting becomes seriously, hinder 106 heat conduction of heat source side heat exchanger, and low pressure reduces extremely, thereby can not continue to heat running.Therefore, in the situation that frosting becomes serious, as shown in Figure 2, utilize cross valve 103 to switch the flow path of cold-producing medium, make heat source side heat exchanger 106 play a role to defrost as condenser.
Next, the related air cooling heat pump unit of present embodiment is described.Fig. 3 is the refrigerant loop figure that the simple structure of the related air cooling heat pump unit 1 of present embodiment is shown.As shown in Figure 3, air cooling heat pump unit 1 has heat pump circuit 11, and this heat pump circuit 11 possesses compressor 12, cross valve 13, load side heat exchanger 14 (water side heat exchanger), expansion valve 15 and heat source side heat exchanger 16 (air-coil).Compressor 12, cross valve 13, load side heat exchanger 14, expansion valve 15 and heat source side heat exchanger 16 are connected successively by refrigerant piping.
Compressor 12 is fluid machineries, and it sucks cold-producing medium, compresses and discharge the cold-producing medium of suction.Cross valve 13 is flow path switching device shifters, cold-producing medium stream when cold-producing medium stream when its switching heats running and cooling operation.Load side heat exchanger 14 is to heat the heat exchanger that when running for example, plays a role, plays a role as evaporimeter when cooling operation as radiator (condenser).This routine load side heat exchanger 14 carrys out the external fluid such as heating water or refrigerating medium by carrying out heat exchange with cold-producing medium in the time heating running, in the time of cooling operation, carrys out cooling external fluid by carrying out heat exchange with cold-producing medium.Expansion valve 15 is examples that make the expansion gear of cold-producing medium puffing.Heat source side heat exchanger 16 plays a role as evaporimeter in the time heating running, in the time of cooling operation, for example, plays a role as radiator (condenser).This routine heat source side heat exchanger 16 absorbs heat cold-producing medium by for example, carrying out heat exchange with the air amount being come by fan air blast (extraneous air) heating when running, in the time of cooling operation by carrying out heat exchange from refrigerant loses heat with the air amount being come by fan air blast.
In addition, air cooling heat pump unit 1 has loop dehumidification 21, and this loop dehumidification 21 is connected in parallel with respect to heat pump circuit 11 and expansion valve 15 and heat source side heat exchanger 16.; in cold-producing medium stream in the time heating running; loop dehumidification 21 is diverging from heat pump circuit 11 by upstream side than load side heat exchanger 14 downstreams and than expansion valve 15; converging with heat pump circuit 11 by upstream side (, leaning on upstream side than compressor 12) than heat source side heat exchanger 16 downstreams and than cross valve 13.
In loop dehumidification 21, be provided with electric expansion valve 22 and remove wet heat exchanger 23 (dehumidifying coil pipe).In the cold-producing medium stream of electric expansion valve 22 in the time heating running, be arranged at than leaning on upstream side except wet heat exchanger 23.Electric expansion valve 22 is the expansion valves that can adjust aperture by the control of control device 30 described later, regulates to the amount of the cold-producing medium of supplying with except wet heat exchanger 23.This routine electric expansion valve 22 is adjusted to regulation aperture according to the pulse signal that carrys out self-control device 30 in the time heating running, for example becomes and close (detailed action describes after a while) completely in the time of cooling operation.Remove wet heat exchanger 23 and heat source side heat exchanger 16 with respect to the air amount stream being come by fan air blast (in Fig. 3, representing the direction of air amount stream with thick arrow) arranged in series.In addition, except wet heat exchanger 23 is disposed at than heat source side heat exchanger 16 by upstream side in air amount stream.The air amount, being come by fan air blast is successively by removing wet heat exchanger 23 and heat source side heat exchanger 16.Except wet heat exchanger 23 plays a role as evaporimeter in the time heating running., except having, wet heat exchanger 23 carrying out function cooling and dehumidifying by upstream side to sucking the air of heat source side heat exchanger 16 than heat source side heat exchanger 16.Because airborne moisture is discharged from as draining in the condensate water producing of condensing except wet heat exchanger 23.In addition, in this example, when cooling operation, electric expansion valve 22 becomes completely closes, so cold-producing medium can not flow except wet heat exchanger 23.
In addition, air cooling heat pump unit 1 has temperature sensor 31, and this temperature sensor 31 detects by the temperature of the air (, sucking the air of heat source side heat exchanger 16) of upstream side except wet heat exchanger 23 downstreams and than heat source side heat exchanger 16 ratio in air amount stream.Temperature sensor 31 detects the temperature of air, thereby exports detection signal to control device 30.
Control device 30 has microcomputer, and this microcomputer possesses CPU, ROM, RAM, input/output port etc.The detection signal of the various sensors of control device 30 based on from including temperature sensor 31 etc. is controlled air cooling heat pump unit 1 entirety.
Fig. 4 is the flow chart that represents an example of the flow process of the regulation processing of the electric expansion valve 22 of being carried out by control device 30.Processing shown in Fig. 4 starts taking air cooling heat pump unit 1 entry into service for example as opportunity.As shown in Figure 4, in step S1, whether be that heating mode is judged to the operation mode of air cooling heat pump unit 1.In the situation that operation mode is heating mode, move to the processing of step S2, beyond being heating mode, operation mode for example, (refrigeration mode) in the situation that, moves to the processing of step S9.
In step S2, whether compressor 12 is judged in operation process.In the situation that compressor 12 is in operation process, move to the processing of step S3, in the situation that compressor 12 is not in operation process, move to the processing of step S9.
In step S3, based on the output signal from temperature sensor 31, contrast removes wet heat exchanger 23 downstreams and heat source side heat exchanger 16 detects by the air themperature (air themperature Ta) of upstream side.Then, move to the processing of step S4.
In step S4, whether air themperature Ta is judged than setting air temperature (being in this example 10 DEG C) is low.At this, setting air temperature is not redefined for can produce the temperature of frosting except wet heat exchanger 23.In the situation that air themperature Ta is lower than setting air temperature, move to the processing of step S5, in situation (air themperature Ta is situation more than setting air temperature) in addition, move to the processing of step S6.
In step S5, close the processing of electric expansion valve 22 predetermined pulse amounts.By this processing, the aperture of electric expansion valve 22 reduces, thereby reduces to the refrigerant amount of supplying with except wet heat exchanger 23.
In step S6, whether air themperature Ta is judged than setting air temperature is high.In the situation that air themperature Ta is higher than setting air temperature, move to the processing of step S7, in situation (situation that air themperature Ta is identical with setting air temperature) in addition, move to the processing of step S8.
In step S7, open the processing of electric expansion valve 22 predetermined pulse amounts.By this processing, the aperture of electric expansion valve 22 increases, thereby increases to the refrigerant amount of supplying with except wet heat exchanger 23.
In step S8, the aperture of electric expansion valve 22 is remained unchanged.Thus, can maintain to the refrigerant amount of supplying with except wet heat exchanger 23.By the processing of step S4～S8, the aperture of electric expansion valve 22 is adjusted to air themperature Ta and approaches setting air temperature (, can not produce frosting except wet heat exchanger 23).
In step S9, electric expansion valve 22 is closed completely., in this example, the situation that is refrigeration mode at the operation mode of air cooling heat pump unit 1 or compressor 12, can be to removing wet heat exchanger 23 the supply system cryogens not in operation process.
Before 1 running of air cooling heat pump unit finishes, with the processing of official hour interval repeating step S1～S9.
As mentioned above, the air cooling heat pump unit 1 of present embodiment possesses: heat pump circuit 11, and it is provided with the compressor 12, load side heat exchanger 14, expansion valve 15 (example of expansion gear) and the heat source side heat exchanger 16 that make refrigerant circulation; And loop dehumidification 21, it is connected in parallel with respect to heat pump circuit 11 and expansion valve 15 and heat source side heat exchanger 16, and be provided with except wet heat exchanger 23, heat source side heat exchanger 16 and all carry out heat exchange with cold-producing medium and air except wet heat exchanger 23, and with respect to air stream arranged in series, except wet heat exchanger 23 is disposed at than heat source side heat exchanger 16 by upstream side in air stream.
According to this structure, can utilize and the air that flows into heat source side heat exchanger 16 be dehumidified except wet heat exchanger 23, produce frosting so can be suppressed at heat source side heat exchanger 16.Therefore, can prevent from extremely reducing because 16 frostings of heat source side heat exchanger cause the low pressure of cold-producing medium.Air cooling heat pump unit 1 in addition, can extend and heat the interval of defrosting in running, so can continue to heat running for a long time.
In addition, the air cooling heat pump unit 1 of present embodiment also possesses: temperature sensor 31, and its contrast detects by the air themperature Ta of upstream side except wet heat exchanger 23 downstreams and than heat source side heat exchanger 16; Electric expansion valve 22, it is arranged at than leaning on upstream side except wet heat exchanger 23 in loop dehumidification 21; And control device 30, it controls electric expansion valve 22 based on air themperature Ta.
According to this structure, by regulating the aperture of electric expansion valve 22, can realize and also not produce frosting except wet heat exchanger 23.Therefore, can not need for the defrosting running to defrosting except wet heat exchanger 23.
Embodiment 2.
Air cooling heat pump unit to embodiment 2 of the present utility model describes.Fig. 5 is the refrigerant loop figure that the simple structure of the air cooling heat pump unit 2 of present embodiment is shown.In addition, to having, the inscape of the function identical with the air cooling heat pump unit 1 of embodiment 1 and effect marks identical Reference numeral and the description thereof will be omitted.As shown in Figure 5, if air cooling heat pump unit 2 compares with the air cooling heat pump unit 1 of embodiment 1, difference aspect following: in the cold-producing medium stream while heating running, be provided with the temperature sensor 32 that the temperature of the refrigerant gas to the outlet side except wet heat exchanger 23 detects.Temperature sensor 32 detects the temperature of refrigerant gas, thereby exports detection signal to control device 30.At this, the temperature that temperature sensor 32 can direct-detection cold-producing medium, also can detect in order indirectly to detect the temperature of cold-producing medium the temperature of refrigerant piping.
Fig. 6 is the flow chart that represents an example of the flow process of the regulation processing of the electric expansion valve 22 of being carried out by control device 30.Processing shown in Fig. 6 starts taking air cooling heat pump unit 2 entrys into service for example as opportunity.In addition, the step S11 of Fig. 6, S12, S15, S17～S19 are identical with step S1, S2, S5, the S7～S9 of Fig. 4 respectively, so description thereof is omitted.
In step S13, the output signal based on from temperature sensor 32 detects the temperature (refrigerant temperature Tr) of the refrigerant gas except wet heat exchanger 23 outlet sides.Then, move to the processing of step S14.
In step S14, to refrigerant temperature Tr, whether than setting, refrigerant temperature (in this example being 1 DEG C) is low is judged.At this, set refrigerant temperature and be not redefined for and can producing the temperature of frosting except wet heat exchanger 23.In the situation that refrigerant temperature Tr is lower than setting refrigerant temperature, move to the processing of step S15, in situation (refrigerant temperature Tr is situation about setting more than refrigerant temperature) in addition, move to the processing of step S16.
In step S16, to refrigerant temperature Tr, whether than setting, refrigerant temperature is high is judged.In the situation that refrigerant temperature Tr is higher than setting refrigerant temperature, move to the processing of step S17, in situation (situation that refrigerant temperature Tr is identical with setting refrigerant temperature) in addition, move to the processing of step S18.
By the processing of step S14～S18, the aperture of electric expansion valve 22 is adjusted to refrigerant temperature Tr and approaches setting refrigerant temperature (, can not produce frosting except wet heat exchanger 23).
As mentioned above, the air cooling heat pump unit 2 of present embodiment also possesses: temperature sensor 32, and its refrigerant temperature Tr to the outlet side except wet heat exchanger 23 detects; Electric expansion valve 22, it is arranged at than leaning on upstream side except wet heat exchanger 23 in loop dehumidification 21; And control device 30, it controls electric expansion valve 22 based on refrigerant temperature Tr.
According to this structure, by regulating the aperture of electric expansion valve 22, can realize and also not produce frosting except wet heat exchanger 23.Therefore, can not need for the defrosting running to defrosting except wet heat exchanger 23.
Embodiment 3.
Air cooling heat pump unit to embodiment 3 of the present utility model describes.Fig. 7 is the refrigerant loop figure that the simple structure of the air cooling heat pump unit 3 of present embodiment is shown.In addition, to having, the inscape of the function identical with the air cooling heat pump unit 1 of embodiment 1 and effect marks identical Reference numeral and the description thereof will be omitted.As shown in Figure 7, if air cooling heat pump unit 3 compares with the air cooling heat pump unit 1 of embodiment 1, difference aspect following: in the cold-producing medium stream while heating running, be for example provided with than removing wet heat exchanger 23 the multiple magnetic valves (magnetic valve A24 and magnetic valve B25 (being an example of open and close valve)) that are connected in parallel with each other by upstream side in loop dehumidification 21.In this example, the quantity of magnetic valve A24 and magnetic valve B25 is two.The magnetic valve A24 that this is routine and magnetic valve B25 are opened and closed by two position actions according to the control of control device 30 (having or not energising).To the refrigerant amount of supplying with except wet heat exchanger 23 according in opening the magnetic valve A24 of state and the quantity of magnetic valve B25 regulates.In can being arranged at loop dehumidification 21 in magnetic valve A24 and the magnetic valve B25 cold-producing medium stream in the time heating running, ratio is except wet heat exchanger 23 downstreams.
Fig. 8～Figure 10 is the flow chart that represents an example of the flow process of the switching processing of the magnetic valve A24 that carried out by control device 30 and magnetic valve B25.Processing shown in Fig. 8～Figure 10 starts taking air cooling heat pump unit 3 entrys into service for example as opportunity.In addition, in this example, be simplified illustration, magnetic valve B25 is set as than magnetic valve A24 preferentially in opening state.Therefore, the combination of the open and-shut mode of this routine magnetic valve A24 and magnetic valve B25 has following three kinds: magnetic valve A24 and magnetic valve B25 are all in closing state, magnetic valve A24 in closing state and magnetic valve B25 in opening state, magnetic valve A24 and magnetic valve B25 all in opening state.
As shown in Fig. 8～Figure 10, in step S21, whether be that heating mode is judged to the operation mode of air cooling heat pump unit 3.In the situation that operation mode is heating mode, move to the processing of step S22, beyond being heating mode, operation mode for example, (refrigeration mode) in the situation that, moves to the processing of step S30.
In step S22, whether compressor 12 is judged in operation process.In the situation that compressor 12 is in operation process, move to the processing of step S23, in the situation that compressor 12 is not in operation process, move to the processing of step S30.
In step S23, based on the output signal from temperature sensor 31, contrast detects by the air themperature (air themperature Ta) of upstream side except wet heat exchanger 23 downstreams and than heat source side heat exchanger 16.Then, move to the processing of step S24.
In step S24, the open and-shut mode of magnetic valve A24 and magnetic valve B25 is judged.If magnetic valve A24 and magnetic valve B25 all, in closing state (not to the state except wet heat exchanger 23 the supply system cryogens), move to the processing of step S25, if state in addition moves to the processing of step S31.
In step S25, whether air themperature Ta is judged than setting air temperature (being in this example 10 DEG C) is low.At this, setting air temperature is not redefined for can produce the temperature of frosting except wet heat exchanger 23.In the situation that air themperature Ta is lower than setting air temperature, move to the processing of step S26, in situation (air themperature Ta is situation more than setting air temperature) in addition, move to the processing of step S27.
In step S26, carry out magnetic valve A24 and magnetic valve B25 all to maintain the processing of the state of closing.Thus, can maintain not to the state except wet heat exchanger 23 the supply system cryogens.
In step S27, whether air themperature Ta is judged than setting air temperature is high.In the situation that air themperature Ta is higher than setting air temperature, move to the processing of step S28, in situation (situation that air themperature Ta is identical with setting air temperature) in addition, move to the processing of step S29.
In step S28, carry out magnetic valve A24 to maintain the state of closing and make magnetic valve B25 be out the processing of state.By this processing, can be to removing wet heat exchanger 23 the supply system cryogens.
In step S29, carry out magnetic valve A24 and magnetic valve B25 all to maintain the processing of the state of closing.Thus, can maintain not to the state except wet heat exchanger 23 the supply system cryogens.
In step S30, make magnetic valve A24 and magnetic valve B25 be the processing of the state of closing., in this example, the situation that is refrigeration mode at the operation mode of air cooling heat pump unit 3 or compressor 12 be not in operation process, not to removing wet heat exchanger 23 the supply system cryogens.
In step S31, the open and-shut mode of magnetic valve A24 and magnetic valve B25 is judged.At magnetic valve A24 in closing state and magnetic valve B25 in opening in the situation (to supply with the situation of the cold-producing medium of relatively little flow except wet heat exchanger 23) of state, move to the processing of step S32, in addition in the situation that, move to the processing of step S37.
In step S32, whether air themperature Ta is judged than setting air temperature (being in this example 10 DEG C) is low.In the situation that air themperature Ta is lower than setting air temperature, move to the processing of step S33, in situation (air themperature Ta is situation more than setting air temperature) in addition, move to the processing of step S34.
In step S33, make magnetic valve A24 and magnetic valve B25 be the processing of the state of closing.By this processing, become not to removing wet heat exchanger 23 the supply system cryogens.
In step S34, whether air themperature Ta is judged than setting air temperature is high.In the situation that air themperature Ta is higher than setting air temperature, move to the processing of step S35, in situation (situation that air themperature Ta is identical with setting air temperature) in addition, move to the processing of step S36.
In step S35, make magnetic valve A24 and magnetic valve B25 be out the processing of state.By this processing, can make increases to the refrigerant amount of supplying with except wet heat exchanger 23.
In step S36, carry out magnetic valve A24 to maintain the state of closing and the processing that magnetic valve B25 maintained out to state.By this processing, can maintain to the refrigerant amount of supplying with except wet heat exchanger 23.
In the moment of step S37, magnetic valve A24 and magnetic valve B25 all become out state., can be to the cold-producing medium of supplying with relatively large flow except wet heat exchanger 23.
In the next step S38 of step S37, whether air themperature Ta is judged than setting air temperature (being in this example 10 DEG C) is low.In the situation that air themperature Ta is lower than setting air temperature, move to the processing of step S39, in situation (air themperature Ta is situation more than setting air temperature) in addition, move to the processing of step S40.
In step S39, carry out magnetic valve A24 to maintain the state of closing and the processing that magnetic valve B25 maintained out to state.By this processing, reduce to the refrigerant amount of supplying with except wet heat exchanger 23.
In step S40, whether air themperature Ta is judged than setting air temperature is high.In the situation that air themperature Ta is higher than setting air temperature, move to the processing of step S41, in situation (situation that air themperature Ta is identical with setting air temperature) in addition, move to the processing of step S42.
In step S41, carry out magnetic valve A24 and magnetic valve B25 all to maintain out the processing of state.By this processing, will maintain maximum stream flow to the refrigerant amount of supplying with except wet heat exchanger 23.
In step S42, carry out magnetic valve A24 and magnetic valve B25 all to maintain out the processing of state.By this processing, can maintain to the refrigerant amount of supplying with except wet heat exchanger 23.
By above-mentioned processing, the open and-shut mode of magnetic valve A24 and magnetic valve B25 is controlled as air themperature Ta and approaches setting air temperature (, not producing frosting except wet heat exchanger 23).Before air cooling heat pump unit 3 finishes running, repeatedly carry out the processing of step S21～S42 with official hour interval.
As mentioned above, the air cooling heat pump unit 3 of present embodiment also possesses: temperature sensor 31, and it is also than detecting by the air themperature Ta of upstream side except wet heat exchanger 23 downstreams and than heat source side heat exchanger 16; The magnetic valve A24 being connected in parallel with each other and magnetic valve B25 (examples of multiple open and close valves), they are arranged at than removing wet heat exchanger 23 downstreams except wet heat exchanger 23 by upstream side or ratio in loop dehumidification 21; And control device 30, it is controlled magnetic valve A24 and magnetic valve B25 based on air themperature Ta.
According to this structure, by the open and-shut mode of magnetic valve A24 and magnetic valve B25 is controlled, can realize and also not produce frosting except wet heat exchanger 23.Therefore, can not need for the defrosting running to defrosting except wet heat exchanger 23.
Embodiment 4.
Air cooling heat pump unit to embodiment 4 of the present utility model describes.Figure 11 is the refrigerant loop figure that the simple structure of the air cooling heat pump unit 4 of present embodiment is shown.In addition, to having, the inscape of the function identical with the air cooling heat pump unit 3 of embodiment 3 and effect marks identical Reference numeral and the description thereof will be omitted.As shown in figure 11, if air cooling heat pump unit 4 compares with the air cooling heat pump unit 3 of embodiment 3, difference aspect following: in the cold-producing medium stream while heating running, be provided with the temperature sensor 32 that the temperature of the refrigerant gas except wet heat exchanger 23 outlet sides is detected.Temperature sensor 32 detects the temperature of refrigerant gas, thereby exports detection signal to control device 30.At this, the temperature that temperature sensor 32 can direct-detection cold-producing medium, also can detect in order indirectly to detect the temperature of cold-producing medium the temperature of refrigerant piping.
Figure 12～Figure 14 is the flow chart that represents an example of the flow process of the switching processing of the magnetic valve A24 that carried out by control device 30 and magnetic valve B25.Processing shown in Figure 12～Figure 14 starts taking air cooling heat pump unit 4 entrys into service for example as opportunity.
As shown in Figure 12～Figure 14, in step S51, whether be that heating mode is judged to the operation mode of air cooling heat pump unit 4.In the situation that operation mode is heating mode, move to the processing of step S52, beyond being heating mode, operation mode for example, (refrigeration mode) in the situation that, moves to the processing of step S60.
In step S52, whether compressor 12 is judged in operation process.In the situation that compressor 12 is in operation process, move to the processing of step S53, in the situation that compressor 12 is not in operation process, move to the processing of step S60.
In step S53, the output signal based on from temperature sensor 32 detects the temperature (refrigerant temperature Tr) of the refrigerant gas except wet heat exchanger 23 outlet sides.Then, move to the processing of step S54.
In step S54, the open and-shut mode of magnetic valve A24 and magnetic valve B25 is judged.If magnetic valve A24 and magnetic valve B25 are all in closing state (not to except the state of wet heat exchanger 23 the supply system cryogens), move to the processing of step S55, if in state in addition, move to the processing of step S61.
In step S55, to refrigerant temperature Tr, whether than setting, refrigerant temperature (being in this example 1 DEG C) is low is judged.At this, set refrigerant temperature and be not redefined for and can producing the temperature of frosting except wet heat exchanger 23.In the situation that refrigerant temperature Tr is lower than setting refrigerant temperature, move to the processing of step S56, in situation (refrigerant temperature Tr is situation about setting more than refrigerant temperature) in addition, move to the processing of step S57.
In step S56, carry out magnetic valve A24 and magnetic valve B25 all to maintain the processing of the state of closing.Thus, can maintain not to the state except wet heat exchanger 23 the supply system cryogens.
In step S57, to refrigerant temperature Tr, whether than setting, refrigerant temperature is high is judged.In the situation that refrigerant temperature Tr is higher than setting refrigerant temperature, move to the processing of step S58, in situation (situation that refrigerant temperature Tr is identical with setting refrigerant temperature) in addition, move to the processing of step S59.
In step S58, carry out magnetic valve A24 to maintain the state of closing and make magnetic valve B25 be out the processing of state.By this processing, to removing wet heat exchanger 23 the supply system cryogens.
In step S59, carry out magnetic valve A24 and magnetic valve B25 all to maintain the processing of the state of closing.Thus, can maintain not to the state except wet heat exchanger 23 the supply system cryogens.
In step S60, make magnetic valve A24 and magnetic valve B25 be the processing of the state of closing., in this example, the situation that is refrigeration mode at the operation mode of air cooling heat pump unit 4 or compressor 12 be not in operation process, not to removing wet heat exchanger 23 the supply system cryogens.
In step S61, the open and-shut mode of magnetic valve A24 and magnetic valve B25 is judged.At magnetic valve A24 in closing state and magnetic valve B25 in opening in the situation (to supply with the situation of the cold-producing medium of relatively little flow except wet heat exchanger 23) of state, move to the processing of step S62, in addition in the situation that, move to the processing of step S67.
In step S62, to refrigerant temperature Tr, whether than setting, refrigerant temperature (being in this example 1 DEG C) is low is judged.In the situation that refrigerant temperature Tr is lower than setting refrigerant temperature, move to the processing of step S63, in situation (refrigerant temperature Tr is situation about setting more than refrigerant temperature) in addition, move to the processing of step S64.
In step S63, make magnetic valve A24 and magnetic valve B25 be the processing of the state of closing.By this processing, become not to removing wet heat exchanger 23 the supply system cryogens.
In step S64, to refrigerant temperature Tr, whether than setting, refrigerant temperature is high is judged.In the situation that refrigerant temperature Tr is higher than setting refrigerant temperature, move to the processing of step S65, in situation (situation that refrigerant temperature Tr is identical with setting refrigerant temperature) in addition, move to the processing of step S66.
In step S65, make magnetic valve A24 and magnetic valve B25 be out the processing of state.By this processing, increase to the refrigerant amount of supplying with except wet heat exchanger 23.
In step S66, carry out magnetic valve A24 to maintain the state of closing and the processing that magnetic valve B25 maintained out to state.By this processing, can maintain to the refrigerant amount of supplying with except wet heat exchanger 23.
In the moment of step S67, magnetic valve A24 and magnetic valve B25 all become out state., can be to the cold-producing medium of supplying with relatively large flow except wet heat exchanger 23.
In the next step S68 of step S67, to refrigerant temperature Tr, whether than setting, refrigerant temperature (being in this example 1 DEG C) is low is judged.In the situation that refrigerant temperature Tr is lower than setting refrigerant temperature, move to the processing of step S69, in situation (refrigerant temperature Tr is situation about setting more than refrigerant temperature) in addition, move to the processing of step S70.
In step S69, carry out magnetic valve A24 to maintain the state of closing and the processing that magnetic valve B25 maintained out to state.By this processing, reduce to the refrigerant amount of supplying with except wet heat exchanger 23.
In step S70, to refrigerant temperature Tr, whether than setting, refrigerant temperature is high is judged.In the situation that refrigerant temperature Tr is higher than setting refrigerant temperature, move to the processing of step S71, in situation (situation that refrigerant temperature Tr is identical with setting refrigerant temperature) in addition, move to the processing of step S72.
In step S71, carry out magnetic valve A24 and magnetic valve B25 all to maintain out the processing of state.By this processing, will maintain maximum stream flow to the refrigerant amount of supplying with except wet heat exchanger 23.
In step S72, carry out magnetic valve A24 and magnetic valve B25 all to maintain out the processing of state.By this processing, can maintain to the refrigerant amount of supplying with except wet heat exchanger 23.
By above-mentioned processing, the open and-shut mode of magnetic valve A24 and magnetic valve B25 is controlled as refrigerant temperature Tr and approaches setting refrigerant temperature (, not producing frosting except wet heat exchanger 23).Before air cooling heat pump unit 4 finishes running, repeatedly carry out the processing of step S51～S72 with official hour interval.
As mentioned above, the air cooling heat pump unit 4 of present embodiment also possesses: temperature sensor 32, and it detects the refrigerant temperature Tr except wet heat exchanger 23 outlet sides; The magnetic valve A24 being connected in parallel with each other and magnetic valve B25 (examples of multiple open and close valves), they are arranged at than removing wet heat exchanger 23 downstreams except wet heat exchanger 23 by upstream side or ratio in loop dehumidification 21; And control device 30, it is controlled magnetic valve A24 and magnetic valve B25 based on refrigerant temperature Tr.
According to this structure, by the open and-shut mode of magnetic valve A24 and magnetic valve B25 is controlled, can realize and also not produce frosting except wet heat exchanger 23.Therefore, can not need for the defrosting running to defrosting except wet heat exchanger 23.
Other embodiments.
The utility model is not limited to above-mentioned embodiment, can be also various distortion.
For example, in the above-described embodiment, being set forth in load side heat exchanger 14 is example because carrying out with external fluid the cold-producing medium that heat exchange condenses, but also can adopt CO noncondensing at load side heat exchanger 14 and to outside fluid for radiating heat
2cold-producing medium.
In addition, the respective embodiments described above, variation also can combination with one another be implemented.
Claims (5)
1. an air cooling heat pump unit, is characterized in that, possesses:
Make the heat pump circuit of refrigerant circulation, it is provided with compressor, load side heat exchanger, expansion gear and heat source side heat exchanger; And
Loop dehumidification, it is connected in parallel with respect to described heat pump circuit and described expansion gear and described heat source side heat exchanger, is provided with except wet heat exchanger,
Described heat source side heat exchanger and the described wet heat exchanger that removes all carry out heat exchange with cold-producing medium and air, and with respect to air stream arranged in series,
The described wet heat exchanger that removes is disposed at than described heat source side heat exchanger by upstream side in air stream.
2. air cooling heat pump unit according to claim 1, is characterized in that also possessing:
Temperature sensor, its contrast is described to be detected by the air themperature of upstream side except wet heat exchanger downstream and than described heat source side heat exchanger;
Electric expansion valve, it is arranged at than described except the top trip side of wet heat exchanger in described loop dehumidification; And
Control device, it controls described electric expansion valve based on described air themperature.
3. air cooling heat pump unit according to claim 1, is characterized in that also possessing:
Temperature sensor, its refrigerant temperature to the described outlet side except wet heat exchanger detects;
Electric expansion valve, is arranged in loop dehumidification described in it than described except the top trip side of wet heat exchanger; And
Control device, it controls described electric expansion valve based on described refrigerant temperature.
4. air cooling heat pump unit according to claim 1, is characterized in that also possessing:
Temperature sensor, its contrast is described to be detected by the air themperature of upstream side except wet heat exchanger downstream and than described heat source side heat exchanger;
The multiple open and close valves that are connected in parallel with each other, described multiple open and close valves are arranged at than described except the top trip side of wet heat exchanger or than the described wet heat exchanger downstream of removing in described loop dehumidification; And
Control device, it controls described multiple open and close valve based on described air themperature.
5. air cooling heat pump unit according to claim 1, is characterized in that also possessing:
Temperature sensor, its refrigerant temperature to the described outlet side except wet heat exchanger detects;
The multiple open and close valves that are connected in parallel with each other, described multiple open and close valves are arranged at than described except the top trip side of wet heat exchanger or than the described wet heat exchanger downstream of removing in described loop dehumidification; And
Control device, it controls described multiple open and close valve based on described refrigerant temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014027799A JP2015152266A (en) | 2014-02-17 | 2014-02-17 | air-cooled heat pump unit |
| JP2014-027799 | 2014-02-17 |
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| CN204027078U true CN204027078U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420358234.9U Expired - Fee Related CN204027078U (en) | 2014-02-17 | 2014-06-30 | Air cooling heat pump unit |
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| CN110173917B (en) * | 2019-06-21 | 2023-07-18 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN111076446A (en) * | 2019-12-02 | 2020-04-28 | 珠海格力电器股份有限公司 | Heat pump air conditioning system and control method thereof |
| CN111425949A (en) * | 2020-03-11 | 2020-07-17 | 珠海格力电器股份有限公司 | Heat pump air conditioning system and control method thereof |
| US11913672B2 (en) * | 2020-12-21 | 2024-02-27 | Goodman Global Group, Inc. | Heating, ventilation, and air-conditioning system with dehumidification |
| CN115371311A (en) * | 2022-08-16 | 2022-11-22 | 西安交通大学 | Parasitic heat exchanger system with frost inhibition and defrosting functions and working method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS4915330Y1 (en) * | 1967-12-19 | 1974-04-17 | ||
| JP2519299Y2 (en) * | 1989-11-16 | 1996-12-04 | サンデン株式会社 | Agricultural air conditioner |
| JP4201427B2 (en) * | 1999-03-31 | 2008-12-24 | 三洋電機株式会社 | Low temperature showcase |
| JP2009097779A (en) * | 2007-10-16 | 2009-05-07 | Denso Corp | Supercritical refrigerating cycle |
| JP3145551U (en) * | 2008-07-31 | 2008-10-09 | 飛傑能源開發股▲分▼有限公司 | Air conditioner |
| JP2010196915A (en) * | 2009-02-23 | 2010-09-09 | Mitsubishi Heavy Ind Ltd | Refrigerating cycle system and method of controlling the refrigerating cycle system |
| JP2010271016A (en) * | 2009-05-25 | 2010-12-02 | Orion Mach Co Ltd | Temperature and relative humidity control device |
| JP5812726B2 (en) * | 2011-07-12 | 2015-11-17 | 三菱重工業株式会社 | Heat pump water heater |
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