CN102095294A - Heat recovery module unit, air conditioning unit and control method - Google Patents
Heat recovery module unit, air conditioning unit and control method Download PDFInfo
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- CN102095294A CN102095294A CN2009102119974A CN200910211997A CN102095294A CN 102095294 A CN102095294 A CN 102095294A CN 2009102119974 A CN2009102119974 A CN 2009102119974A CN 200910211997 A CN200910211997 A CN 200910211997A CN 102095294 A CN102095294 A CN 102095294A
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- 238000011084 recovery Methods 0.000 title claims abstract description 75
- 238000004378 air conditioning Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 125
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 20
- 238000010977 unit operation Methods 0.000 claims description 20
- 238000005057 refrigeration Methods 0.000 claims description 19
- 230000000694 effects Effects 0.000 description 11
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005457 optimization Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 230000002528 anti-freeze Effects 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The invention provides a heat recovery module unit, comprising: the air conditioner comprises a compressor, a first four-way valve, a second four-way valve, an air conditioner water shell and tube heat exchanger, a first throttling device, a second throttling device, a third throttling device, a first heat exchanger, a hot water shell and tube heat exchanger, a gas-liquid separator, a liquid storage tank and a connecting pipe; the D end of the first four-way valve is connected with the exhaust end of the compressor; the E end of the first four-way valve is connected with the output end of the air-conditioning water shell and tube heat exchanger; the S end of the first four-way valve is connected with the input end of the gas-liquid separator; the C end of the first four-way valve is connected with the D end of the second four-way valve; the C end of the second four-way valve is connected with the input end of the first heat exchanger; the E end of the second four-way valve is connected with the output end of the hot water shell and tube heat exchanger; and the S end of the second four-way valve is connected with the input end of the gas-liquid separator.
Description
Technical field
The present invention relates to the heat exchange field, in particular to the control method of a kind of air-conditioning unit, heat recovery module unit and heat recovery module unit operation.
Background technology
Recuperation of heat unit operation common on the market heats and heats the same throttling arrangement of water, can't reach the optimization coupling that heats and heat water.
In addition, the recuperation of heat unit of most of producers heat heat recovery mode, it is preferential or heat preferentially to heat water, can not select according to client's operation demand, causes unit can not satisfy requirement of client fully.During the multimode unit operation, each unit in the module can only unify that operation heats or unified operation heats water.When heating and heating the water switching, valve directly switches in the system, and system fluctuation is big.When unit operation heats water, can't defrost, must forward to could defrost after heating.
Summary of the invention
The present invention aims to provide a kind of heat recovery module unit, can solve existing recuperation of heat unit heat and heat water with same throttling arrangement, can't reach the problems such as optimization coupling that heat and heat water.
The invention provides a kind of heat recovery module unit, comprising: compressor, first cross valve, second cross valve, air conditioner water case tube heat exchanger, first throttle device, second throttling arrangement, the 3rd throttling arrangement, first heat exchanger, hot water case tube heat exchanger tube connector;
The D end of first cross valve is connected with the exhaust end of compressor; The E end of first cross valve is connected with the output of air conditioner water case tube heat exchanger; The S end of first cross valve is connected with the compressor air suction end; The C end of first cross valve is connected with the D end of second cross valve;
The C end of second cross valve is connected with the output of first heat exchanger; The E end of second cross valve is connected with the output of hot water case tube heat exchanger; The S end of second cross valve is connected with the compressor air suction end;
First throttle device one end connects the input of air conditioner water case tube heat exchanger, and the other end connects second throttling arrangement and the 3rd throttling arrangement;
Second throttling arrangement, one end connects the input of hot water case tube heat exchanger, and the other end connects first throttle device and the 3rd throttling arrangement;
The 3rd throttling arrangement one end connects the input of first heat exchanger, and the other end connects the first throttle device and second throttling arrangement.
Preferably, first heat exchanger is a finned heat exchanger.
Preferably, the first throttle device comprises: first check valve and second electric expansion valve in parallel.
Preferably, the first throttle device also comprises: second magnetic valve, and second magnetic valve, one end is connected with second electric expansion valve with the conduction terminal of first check valve respectively, and the other end is connected with the input of air conditioner water case tube heat exchanger.
Preferably, second throttling arrangement comprises: second check valve and the 3rd magnetic valve in parallel.
Preferably, the 3rd throttling arrangement comprises: the 3rd check valve and first electric expansion valve in parallel.
Preferably, the 3rd throttling arrangement also comprises: first magnetic valve, and first magnetic valve, one end is connected with first electric expansion valve with the conduction terminal of the 3rd check valve respectively, and the other end is connected with the input of first heat exchanger.
Preferably, the heat recovery module unit also comprises: temperature-sensitive bag and pressure sensor.
Preferably, the heat recovery module unit also comprises: throttle capillary tube is separately positioned in described first throttle device, described second throttling arrangement, described the 3rd throttling arrangement.
Preferably, the heat recovery module unit also comprises: gas-liquid separator and fluid reservoir, described gas-liquid separator one end are connected with the S end of first cross valve and second cross valve respectively, and the other end is connected with the compressor air suction end; Described fluid reservoir is connected with first throttle device, second throttling arrangement, the 3rd throttling arrangement respectively.
The present invention also provides a kind of air-conditioning unit, comprises a plurality of foregoing heat recovery module units.
The present invention also provides a kind of control method of heat recovery module unit operation, and it uses foregoing air-conditioning unit, and the different electric expansion valve throttling of employing wherein, heats, freezes; Heat, heat hydromining with the first electric expansion valve throttling; The second electric expansion valve throttling is adopted in refrigeration, refrigeration recuperation of heat.
Preferably, the operational mode of described single heat recovery module unit comprises heat recovery mode, refrigeration heat recovery mode, the separate refrigeration pattern of heating.
Preferably, described to heat heat recovery mode be heating mode with heat the aqueous mode alternate run, and the heat recovery module unit is carried out heating mode or heated aqueous mode according to the leaving water temperature decision of air conditioner water case tube heat exchanger, hot water case tube heat exchanger.
The different throttling arrangement throttling of employing because the module unit heats, freezes; So can optimize the restriction effect of unit, reach the optimization coupling that heats and heat water.Employing has the air-conditioning unit of this module unit and the restriction effect that control method also can be optimized unit, reaches the optimization coupling that heats and heat water.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the pipeline jointing construction according to a kind of heat recovery module unit of first embodiment of the invention;
Fig. 2 has schematically shown the pipeline jointing construction according to a kind of heat recovery module unit of second embodiment of the invention;
Fig. 3 has schematically shown the operation block diagram according to the heat recovery module unit of the embodiment of the invention, and the heat recovery module unit of this embodiment is used for the hotel;
Fig. 4 has schematically shown the operation block diagram according to the air-conditioning unit of the embodiment of the invention, and this air-conditioning unit comprises three heat recovery module units;
The heat recovery module operating states of the units that Fig. 5 has schematically shown according to the embodiment of the invention switches block diagram.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 has schematically shown the pipeline jointing construction according to a kind of heat recovery module unit of the embodiment of the invention.As shown in Figure 1, the heat recovery module unit 1 according to this embodiment comprises: compressor 10, the first cross valve 4V1, the second cross valve 4V2, air conditioner water case tube heat exchanger 20, first throttle device 70, the second throttling arrangements 80, the three throttling arrangements 90, first heat exchanger 40, hot water case tube heat exchanger 30, gas-liquid separator 60, fluid reservoir 50, tube connector 100, tube connector are used for interconnecting between above-mentioned each parts.Certainly, heat recovery module unit 1 can adopt gas-liquid separator 60, and fluid reservoir 50 can not adopt gas-liquid separator 60, fluid reservoir 50 according to actual needs yet.
The D end of the first cross valve 4V1 is connected with the exhaust end of compressor 10, and usually, first heat exchanger is a finned heat exchanger, heats with realization; The E end of the first cross valve 4V1 is connected with the output of air conditioner water case tube heat exchanger 20; The S end of first cross valve is connected with the input of gas-liquid separator 60; The C end of first cross valve is connected with the D end of second cross valve.
The C end of the second cross valve 4V2 is connected with the output of first heat exchanger 40; The E end of second cross valve is connected with the output of hot water case tube heat exchanger 30; The S end of second cross valve is connected with the input of gas-liquid separator 60.
First throttle device 70 1 ends connect the input of air conditioner water case tube heat exchanger 20, and the other end connects fluid reservoir 50.
Second throttling arrangement, 80 1 ends connect the input of hot water case tube heat exchanger 30, and the other end connects fluid reservoir 50.
The 3rd throttling arrangement 90 1 ends connect the input of first heat exchanger 40, and the other end connects fluid reservoir 50.
The output of gas-liquid separator 60 is connected with the suction end of compressor 10.
The heat recovery module unit heats, freezes and adopts different throttling arrangement throttlings, so can optimize the restriction effect of unit, reaches the optimization coupling that heats and heat water.
Fig. 2 has schematically shown the pipeline jointing construction according to a kind of heat recovery module unit of second embodiment of the invention.Preferably, as shown in Figure 2, first throttle device 70 comprises: first check valve 701 and second electric expansion valve 705 (also can be expressed as exv2) in parallel.
Preferably, first throttle device 70 also comprises: second magnetic valve, 703, the second magnetic valves, 703 1 ends are connected with second electric expansion valve 705 with first check valve, 701 conduction terminal respectively, and the other end is connected with the input of air conditioner water case tube heat exchanger 20.
Preferably, second throttling arrangement 80 comprises: second check valve 802 and the 3rd magnetic valve 804 in parallel.
Preferably, the 3rd throttling arrangement 90 comprises: the 3rd check valve 903 and first electric expansion valve 901 (also can be expressed as exv1) in parallel.
Preferably, the 3rd throttling arrangement 90 also comprises: first magnetic valve, 905, the first magnetic valves, 905 1 ends are connected with first electric expansion valve 901 with the 3rd check valve 903 conduction terminal respectively, and the other end is connected with the output of first heat exchanger 40.
Magnetic valve, check valve, the application of electric expansion valve in above-mentioned throttling arrangement, improved restriction effect, operation heats and adopts when heating water 901 throttlings of first electric expansion valve, adopt 705 throttlings of second electric expansion valve when operation separate refrigeration and refrigeration heat recovery mode, refrigeration adopts different electric expansion valve throttlings respectively with heating, and heat, heat hydromining with same electric expansion valve throttling, refrigeration, same electric expansion valve throttling is adopted in the refrigeration recuperation of heat, make the restriction effect of unit reach best, there is not drift during the running status conversion, the given initial step number uniformity of system is better, unit is reliable and stable during startup, two electric expansion valves are respectively the only throttle mechanisms of coupling under each self-operating, make unit capacity obtain maximum performance.And the drift that exists when having avoided the conversion of single electric expansion valve running status, and then the given initial step number uniformity of the system that reached is better, the reliable and stable effect of unit during startup.
Preferably, the heat recovery module unit also comprises: temperature-sensitive bag 110, so that detected temperatures.Temperature-sensitive bag 110 for example can be one, be arranged on the tube connector, also can be for a plurality of, be ten for example, be separately positioned between first throttle device 70 and the fluid reservoir 50, between first throttle device 70 and the air conditioner water case tube heat exchanger 20, between the first cross valve 4V1 and the air conditioner water case tube heat exchanger 20; Between hot water case tube heat exchanger 30 and the fluid reservoir 50, between second throttling arrangement 80 and the hot water case tube heat exchanger 30; Between the 3rd throttling arrangement 90 and the fluid reservoir 50, between the 3rd throttling arrangement 90 and first heat exchanger 40, between the second cross valve 4V2 and first heat exchanger 40; Between the first cross valve 4V1 and the compressor 10, between compressor 10 and the gas-liquid separator 60.Certainly, the number of temperature-sensitive bag 110 is the amount doesn't matter, and its number can be decided according to actual conditions, and temperature-sensitive bag 110 numbers are many more, and the temperature detection data of unit are many more.
In addition, the heat recovery module unit also comprises: pressure sensor 120, and with detected pressures.Pressure sensor 120 for example can be one, be arranged on the tube connector, also can be for a plurality of, be ten for example, be separately positioned between first throttle device 70 and the fluid reservoir 50, between first throttle device 70 and the air conditioner water case tube heat exchanger 20, between the first cross valve 4V1 and the air conditioner water case tube heat exchanger 20; Between hot water case tube heat exchanger 30 and the fluid reservoir 50, between second throttling arrangement 80 and the hot water case tube heat exchanger 30; Between the 3rd throttling arrangement 90 and the fluid reservoir 50, between the 3rd throttling arrangement 90 and first heat exchanger 40, between the second cross valve 4V2 and first heat exchanger 40; Between the first cross valve 4V1 and the compressor 10, between compressor 10 and the gas-liquid separator 60.Certainly, the number of pressure sensor 120 is the amount doesn't matter, and its number can be decided according to actual conditions, and pressure sensor 120 numbers are many more, and the pressure detecting data of unit are many more.
Stable and the pressure detecting data of heat recovery module unit are issued the controller of heat recovery module unit by temperature-sensitive bag 110 and pressure sensor 120, controller is controlled each throttling arrangement action again, carries out work to carry out the heat recovery module unit by predetermined in advance mode.Be the controller prior art, its structure and the existing introduction of basic annexation prior art do not repeat them here.
Preferably, as shown in Figure 2, the heat recovery module unit also comprises: throttle capillary tube 130 is separately positioned in described first throttle device 70, described second throttling arrangement 80, described the 3rd throttling arrangement 90, to realize restriction effect better.
Introduce various running statuses below according to the heat recovery module unit of the embodiment of the invention.
1, heat the recuperation of heat refrigerant flow direction:
(1) heats (being equivalent to heat separately)
(2) recuperation of heat (being equivalent to heat separately water)
2, refrigeration recuperation of heat
3, separate refrigeration
When unit operation heated water, directly defrost of unit did not heat defrost and do not need to forward to according to the heat recovery module unit of the embodiment of the invention: heating under the heat recovery mode, unit is done according to the defrost condition under the running status separately of detecting as is judged:
If heating operation reaches the defrost condition, by the switching between system's first cross valve and second cross valve, unit heat exchanger from air conditioner water package 20 absorbs heat, is used for finned heat exchanger (being first heat exchanger 40) defrost herein.If heat water running, reach the defrost condition, by switching between system's first cross valve and second cross valve, unit absorbs heat from hot water case tube heat exchanger 30, be used for the finned heat exchanger defrost.Each operation defrost mode does not down influence mutually, even the water in the air conditioner water case tube heat exchanger is drained or the damage of air-conditioning package water pump does not influence the operation that unit heats the aquation frost winter for antifreeze winter.
Fig. 3 has schematically shown the operation block diagram according to the heat recovery module unit of the embodiment of the invention, and the heat recovery module unit of this embodiment is used for the hotel.As shown in Figure 2, it is major control that the heat recovery module unit heats temperature with hot water temperature and air-conditioning, and unit can decide unit to heat preferentially or to heat water preferential according to the gentle hot water temperature of air conditioner water.Example: a large-scale hotel, unit operation in winter heats heat recovery mode, unit operation heats preferentially, the unit heating operation, satisfy the air conditioning hot load, after the water outlet of unit air conditioner water reaches 48 ℃ of temperature is set, the operation of unit transformation of ownership hot water, water tank temperature is from 15 ℃ of slowly circulation heating, if but the air conditioner water temperature is lower than again 40 ℃ of turn-on temperatures are set in the heating process, unit is heating operation again, and the water temperature in the water tank just can not reach hotel's coolant-temperature gage like this, to heat water preferential so unit will forward to, satisfies the preferential demand of client to hot water.
Fig. 4 has schematically shown the operation block diagram according to the air-conditioning unit of the embodiment of the invention, and this air-conditioning unit comprises three heat recovery module units.As shown in Figure 3,3 modularizations connect the heat recovery module unit that uses and are major control with unit priority, the gentle hot water temperature of air conditioner water, when unit operation heated recuperation of heat, the heat recovery module unit can be according to start and stop condition separately and the different state of state switching condition operation in the multimode.
The example: the heat recovery module unit heat under the heat recovery mode preferential to heat water, also can set basis user's request setting heat preferentially 46 ℃ of air-conditioning water temperatures, 45 ℃ of hot water water temperatures, operation heats water to module 1 according to water temperature, and module 2 operation heats water, and module 3 operations heat water, heats after water satisfies condition, the operation of the automatic transformation of ownership heat of unit, in case heat water demand is arranged, the user hot water demand is preferentially satisfied in the operation of the unit transformation of ownership at once hot water.
The user also can to divide into custom heat preferential heating heat recovery mode, and unit preferentially satisfies the user and heats demand, behind user's air-conditioning need satisfaction, and the automatic transformation of ownership hot water demand of unit.
If the user has air-conditioning and hot water demand simultaneously, so under the situation of many unit parallel connections, under the unit heating mode, one or many units can be set separately and heat water running, and the residue unit is set heating operation, and is same, under unit heats aqueous mode, one or many units can be set heating operation separately, and the residue unit is set and heated water running
So just can satisfy the multiple demand requirement of client well to air conditioner water and hot water.In addition, the air-conditioning unit can also comprise that being not limited to 3 modularizations connects the heat recovery module unit that uses, and for example, the air-conditioning unit can also comprise that 2,4,5,6 or more modularization connect the heat recovery module unit that uses.Separate between each module unit, independent control, just water route connection parallel with one another.
The heat recovery module operating states of the units that Fig. 5 has schematically shown according to the embodiment of the invention switches block diagram.Heating heat recovery mode with a heat recovery module unit operation is example: after unit heats the heat recovery mode start; unit heats preferentially; the air-conditioning water temperature does not reach setting value; unit operation heats; after reaching 48 ℃ of design temperatures; compressor 10 is shut down; t1 rear fan second 130 stops; the air-conditioning water pump (is connected with air conditioner water case tube heat exchanger 20 and does not stop; the first cross valve 4V1 power down that heats; second electric expansion valve 705 is closed; first electric expansion valve 901 (heating the aqueous electron expansion valve) is got to initial step number, and the second cross valve 4V2 powers on, and hot water water pump (being connected with hot water case tube heat exchanger 30) was opened before compressor 10 started; behind the compressor start, compressor 10 operations heat water.
The present invention also provides a kind of control method of heat recovery module unit operation, uses the heat recovery module unit, and the different electric expansion valve throttling of employing wherein, heats, freezes; Heat, heat hydromining with the first electric expansion valve throttling; The second electric expansion valve throttling is adopted in refrigeration, refrigeration recuperation of heat.This control method, the different throttling arrangement throttling of employing because the module unit heats, freezes; So can optimize the restriction effect of unit, the drift that existed when having avoided the conversion of single electric expansion valve running status, and then the given initial step number uniformity of the system that reached is better, the reliable and stable effect of unit during startup.
Heat and heat hydromining with different electric expansion valve throttlings according to the unit operation of the embodiment of the invention, adopt different degree of superheat controls: the heat recovery module unit heats, cooling different electric expansion valve comes throttling, heat, heat the same electric expansion valve of hydromining, i.e. first electric expansion valve, 901 throttlings, refrigeration, same electric expansion valve is adopted in the refrigeration recuperation of heat, i.e. second electric expansion valve, 705 throttlings, make the restriction effect of unit reach best, there is not drift during the running status conversion, the given initial step number uniformity of system is better, unit is reliable and stable during startup, two electric expansion valves are respectively the only throttle mechanisms of coupling under each self-operating, make unit capacity obtain maximum performance.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
1. heat or heat water and preferentially select, promptly the client can be according to the ruuning situation of reality, selects unit should be preferably the client and produce hot water and still heat.
2. when multimode is moved, be basis for estimation with temperature and priority, it is to heat, heat water that the interior unit of module machine can move automatically, rather than unified operation heats or unified the operation heats water.
3, operation heats and heats when changing between the water, requires compressor shutdown, detects water temperature after the shutdown again, rejudges operation by temperature and priority and heats or heat water.
Directly defrost when 4, unit operation heats water absorbs the high water temperature in the hot water package, the high defrost efficient of evaporating temperature height during defrost, and the defrost time is short.
5, unit operation heats and heats water, and the electric expansion valve that uses and disuses respectively comes throttling, adopts the control of the different degree of superheat, unit is heated and the ability that heats water all obtains maximum performance.
In use, client's balance unit better is that operation heats or heat water, and the more enough maximums that reaches of unit capacity are brought into play.During the multimode unit operation, unit can be judged the running status of oneself according to water temperature, can judge control with the truth of water system, the phenomenon of part of generating units frequent start-stop can not occur, and the gentle hot water fluctuating temperature of the air conditioner water of water system is little.When running status was changed, compressor was shut down earlier, rather than directly valve switches, and pressure oscillation and the refrigerant of avoiding the switching in the running to cause move, and strengthen the reliability of unit greatly.Unit operation heats the aquation frost, defrost efficient height, rather than forward to and heat defrost, so just can avoid putting air conditioner water when doing or air-conditioning water temperature when low for the air-conditioning package is antifreeze, unit operation heats water and detects when needing defrost, forward to heat defrost after because no air conditioner water or air-conditioning water temperature are lower in the air-conditioning package, can't absorb the heat that defrost needs, can't defrost or defrost inefficiency.Unit operation heats and heats water, the electric expansion valve that uses and disuses respectively comes throttling, adopt different degree of superheat control, the ability that unit is heated and heat water all obtains maximum performance, two electric expansion valve throttling designs, the step number drift that can avoid single electric expansion valve to exist when different mode is changed improves unit reliability.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a heat recovery module unit is characterized in that, comprising: compressor, first cross valve, second cross valve, air conditioner water case tube heat exchanger, first throttle device, second throttling arrangement, the 3rd throttling arrangement, first heat exchanger, hot water case tube heat exchanger, tube connector;
The D end of described first cross valve is connected with the exhaust end of described compressor; The E end of described first cross valve is connected with the output of described air conditioner water case tube heat exchanger; The S end of described first cross valve is connected with described compressor air suction end; The C end of described first cross valve is connected with the D end of described second cross valve;
The C end of described second cross valve is connected with the output of described first heat exchanger; The E end of described second cross valve is connected with the output of described hot water case tube heat exchanger; The S end of described second cross valve is connected with described compressor air suction end;
Described first throttle device one end connects the input of described air conditioner water case tube heat exchanger, and the other end connects described second throttling arrangement and the 3rd throttling arrangement;
Described second throttling arrangement, one end connects the input of described hot water case tube heat exchanger, and the other end connects described first throttle device and the 3rd throttling arrangement;
Described the 3rd throttling arrangement one end connects the input of described first heat exchanger, and the other end connects the described first throttle device and second throttling arrangement.
2. heat recovery module unit according to claim 1 is characterized in that, described first heat exchanger is a finned heat exchanger.
3. heat recovery module unit according to claim 2 is characterized in that, described first throttle device comprises: first check valve and second electric expansion valve in parallel.
4. heat recovery module unit according to claim 3 is characterized in that,
Described first throttle device also comprises: second magnetic valve,
Described second magnetic valve, one end is connected with described second electric expansion valve with the conduction terminal of described first check valve respectively, and the other end is connected with the input of described air conditioner water case tube heat exchanger.
5. according to claim 1 or 4 described heat recovery module units, it is characterized in that described second throttling arrangement comprises: second check valve and the 3rd magnetic valve in parallel.
6. heat recovery module unit according to claim 5 is characterized in that, described the 3rd throttling arrangement comprises: the 3rd check valve and first electric expansion valve in parallel.
7. heat recovery module unit according to claim 6 is characterized in that,
Described the 3rd throttling arrangement also comprises: first magnetic valve,
Described first magnetic valve, one end is connected with described first electric expansion valve with the conduction terminal of described the 3rd check valve respectively, and the other end is connected with the input of described first heat exchanger.
8. heat recovery module unit according to claim 7 is characterized in that, also comprises: temperature-sensitive bag and pressure sensor.
9. heat recovery module unit according to claim 8 is characterized in that, also comprises:
Throttle capillary tube is separately positioned in described first throttle device, described second throttling arrangement, described the 3rd throttling arrangement.
10. heat recovery module unit according to claim 9 is characterized in that, also comprises:
Gas-liquid separator and fluid reservoir, described gas-liquid separator one end are connected with the S end of first cross valve and second cross valve respectively, and the other end is connected with the compressor air suction end;
Described fluid reservoir is connected with first throttle device, second throttling arrangement, the 3rd throttling arrangement respectively.
11. an air-conditioning unit is characterized in that, comprises a plurality of heat recovery module units according to claim 10.
12. the control method of a heat recovery module unit operation is characterized in that, uses air-conditioning unit according to claim 11, the different electric expansion valve throttling of employing wherein, heats, freezes; Heat, heat hydromining with the first electric expansion valve throttling; The second electric expansion valve throttling is adopted in refrigeration, refrigeration recuperation of heat.
13. control method according to claim 12 is characterized in that: the operational mode of described single heat recovery module unit comprises heat recovery mode, refrigeration heat recovery mode, the separate refrigeration pattern of heating.
14. control method according to claim 13, it is characterized in that: described to heat heat recovery mode be heating mode with heat the aqueous mode alternate run, and the heat recovery module unit is carried out heating mode or heated aqueous mode according to the leaving water temperature decision of air conditioner water case tube heat exchanger, hot water case tube heat exchanger.
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| CN104456846A (en) * | 2014-11-21 | 2015-03-25 | 珠海格力电器股份有限公司 | Control method for dual-system air conditioning unit |
| CN104748307A (en) * | 2015-03-27 | 2015-07-01 | 广东美的暖通设备有限公司 | Air conditioning system and control method thereof |
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