CN103912947B - For fan coil and the heat pump of heat recovery fresh air conditioning group - Google Patents

For fan coil and the heat pump of heat recovery fresh air conditioning group Download PDF

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CN103912947B
CN103912947B CN201410156903.9A CN201410156903A CN103912947B CN 103912947 B CN103912947 B CN 103912947B CN 201410156903 A CN201410156903 A CN 201410156903A CN 103912947 B CN103912947 B CN 103912947B
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air
heat
cooled
water
evaporator
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CN103912947A (en
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荣国华
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荣国华
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56Heat recovery units

Abstract

For fan coil and the heat pump of heat recovery fresh air conditioning group, when heat pump is used to handle fresh air and reclaim the energy in indoor exhaust wind, also air conditioner cold-heat source is provided for indoor fan coil system simultaneously, both share a heat pump, reduce the quantity of source pump, unit can be placed on to roof or outdoor, floor space is reduced, reduces investment cost, system maintenance operations are simple, unit operation efficiency is high, and operating cost is low.

Description

For fan coil and the heat pump of heat recovery fresh air conditioning group
Technical field
The invention belongs to air conditioner refrigerating field, and in particular to the heat pump of Cooling and Heat Source is provided for air-conditioning system.
Background technology
At present, in the fresh air handining unit generally use thermal wheel recovery indoor exhaust wind with heat-recovering function Heat energy, heat exchange efficiency is low, have between air draft and fresh air infiltration and contact, fresh air is polluted, it is unhygienic, in addition, this kind of Air-conditioner set does not possess Cooling and Heat Source, to increase heat transmission equipment, and Cooling and Heat Source is provided by outside.To solve this problem, there is inventor The fresh air handining unit using heat pump recovery air draft heat energy is invented, the heat pump is only that fresh air handining unit offer is cold Thermal source, and the Cooling and Heat Source needed for the air conditioning terminal such as indoor fan coil also needs to separately set a set of heat pump, therefore employ Two sets of independent heat pumps, equipment is more, and floor space is big, and investment is also big.
The content of the invention
It is an object of the invention to provide a kind of compact-sized, reduction floor space, and hygiene, fully energy-conservation are indoor The heat pump that fan coil cooling unit shares with heat recovery fresh air conditioning group.
The present invention solution be:Indoor air-conditioning system is constituted by fan coil and heat recovery fresh air conditioning group, Heat recovery fresh air conditioning group is made up of new bellows, air exhaust box, heat pump, power distribution control system.New bellows by fresh wind port, Filter, pressure fan, air-cooled evaporator, reheater, air outlet, additional function section composition.Air exhaust box is by air inlet, fresh air Mouth, filter, air cooled condenser, exhaust blower, exhaust outlet, additional function section composition.Heat pump is by compressor, air-cooled cold Condenser, water heater, expansion throttling device, air-cooled evaporator, reheater, water-cooled evaporator, servicing unit, refrigerant circulation Pipe, refrigerant composition.Power distribution control system is made up of controller switching equipment and automatic control equipment.
When equipment is run, outdoor fresh air is sucked in new bellows by pressure fan, by the air-cooled evaporator of heat pump Cooling(Summer)Or heating(Winter), air is processed to the parameter of setting, each air conditioning area is sent to by supply air system.Room Interior air draft and outdoor fresh air suck air exhaust box by exhaust blower, by the heating of heat pump air cooled condenser(Summer)Or cooling (Winter)Discharge is outdoor afterwards.Meanwhile water-cooled evaporator provides air conditioning water for indoor fan coil pipe(Summer)And hot water(Winter Season).
During heat pump summer operation, because indoor air temperature is lower than outdoor, cooled down using indoor exhaust wind and outdoor fresh air The air-cooled condenser of heat pump, cold are absorbed by condenser in air exhaust box.In new bellows, outdoor fresh air is by heat pump Air-cooled evaporator is sent to air-conditioned room after cooling.So, by the kind of refrigeration cycle of heat pump, interior has been recycled Cold in air draft.
When heat pump winter works, the air cooled condenser of heat pump is converted to evaporator in air exhaust box, because of room Interior air themperature is higher than outdoor, utilizes the evaporator of heat pump in indoor exhaust wind and outdoor fresh air heating air exhaust box, heat quilt Evaporator absorbs.In new bellows, the air-cooled evaporator of heat pump is converted to condenser, and outdoor fresh air is added by condenser Air-conditioned room is sent to after heat heating.So, circulated by the heating of refrigeration system, recycled the heat in indoor exhaust wind.
Heat pump is also the air conditioning terminals such as indoor fan coil pipe when providing Cooling and Heat Source for heat recovery fresh air conditioning group Air conditioning water, hot water are provided, both share a set of heat pump, compact-sized, and reduction accounts for floor area and investment.
The controller switching equipment of power distribution control system is heat pump, pressure fan, exhaust blower, electronic air quantity regulating tuyere, automatic Control device provides power supply, and automatic control equipment automatically adjusts refrigeration system, air-supply according to the change of indoor and outdoor air parameter Machine, exhaust blower, the running status of electronic air quantity regulating tuyere, ensure the efficient and stable operation of air-conditioner set.
Brief description of the drawings
Fig. 1 is Contiuum type heat recovery fresh air conditioning set constructor figure
Fig. 2 is heat pump figure(1)
Fig. 3 is heat pump figure(2)
Fig. 4 is heat pump figure(3)
Fig. 5 is heat pump figure(4)
Fig. 6 is heat pump figure(5)
Fig. 7 is heat pump figure(6)
Fig. 8 is four-pipe system multiple heat pump figure
Fig. 9 is three control multiple heat recovery fresh air conditioning set constructor figures(1)
Figure 10 is three control multiple heat pump figures
Figure 11 is three control multiple heat recovery fresh air conditioning set constructor figures(2)
Figure 12 is three control multiple heat recovery fresh air conditioning set constructor figures(3)
Figure 13 is two pipes system multiple heat pump figure
Figure 14 is a kind of air-conditioning system figure(1)
Figure 15 is a kind of air-conditioning system figure(2)
Figure 16 is a kind of air-conditioning system figure(3)
Description of reference numerals:
1st, new bellows, 2,51, air exhaust box, 3,11, fresh wind port, 4,13, filter, 5, air-cooled evaporator, 6, reheater, 7th, humidifier, 8, water fender, 9, pressure fan, 10, air outlet, 12, air inlet, 14, air cooled condenser, 15, dividing plate, 16, electricity Control case, 17, exhaust blower, 18, compressor, 19, exhaust outlet, 20, oil return capillary, 21, oil eliminator, 22,25, four-way commutation Valve, 23,24,26,27,34,35, electric control valve, 28, reservoir, 29,39,41,43,45,56,62,83, device for drying and filtering, 30th, show liquid mirror, 31,38,40,42,44,57,63,71,72,73,84, expansion throttling device, 32,85, water-cooled evaporator, 33, Gas-liquid separator, 36, water heater, 37, water circulating pump, 46, fan coil, 47,67,68,69,70, check valve, 48, low pressure gas Pipe, 49, high-pressure air pipe, 50, high-pressure liquid tube, 52,53,54,55,58,59,60,61,75,76,77,78,79,80,81,82, electricity Magnet valve, 64, mode converter, 65, outdoor unit, 66, ventilating fan, 74, heat exchanger
Specific implementation method
Fig. 1 is a kind of Contiuum type heat recovery fresh air conditioning set constructor figure, and the equipment is by new bellows 1, air exhaust box 2, heat pump The most of composition of system, power distribution control system four.
Casing is made of materials such as steel plates, is incubated with insulation materials such as polyurethane.Casing is provided with inspection door, is easy to people Member enters maintenance in cartonning and safeguarded.Newly disconnected between bellows 1 and air exhaust box 2 by dividing plate 15, paste insulation material, prevent air-supply and row Wind and heat exchange are altered between wind.New bellows 1, air exhaust box 2 can make monoblock type, and required equipment is arranged on one completely Casing in, the air-conditioner set of monoblock type is not readily transportable, installation and maintenance, but saves material;Piecewise combination can also be made Formula, the equipment of difference in functionality is placed in several functional sections, makes several small box, to scene after be assembled into one again It is overall.Such as:In new bellows 1, fresh wind port 3, filter 4 are made air intake hybrid filtering section, by that analogy, pressure fan can be made Section, evaporator section, humidifying air-supplying section.Air exhaust box 2 can make air intake hybrid filtering section, condenser section, heat pump main frame and electric cabinet Section, exhaust blower section.Every section can dismantle assembling, be readily transported, install and overhaul.New bellows 1, air exhaust box 2 can be attached as needed Add other functional sections, such as additional electric heater section, air sterillization section, muffler section, maintenance section.
Heat pump host machine part(The equipment such as compressor 18)It can be placed in casing, can also put outside the enclosure, air-cooled steaming The equipment such as hair device 5, reheater 6, air cooled condenser 14 are located in casing.Air-cooled evaporator 5, reheater 6, air-cooled condensation Device 14 ensures that refrigerant evaporates and condensed wherein, heat exchanger copper pipe using the heat exchanger of the forms such as direct-expansion type structure coil pipe Made with materials such as aluminum fin-stocks.
The electric cabinet 16 of power distribution control system can hang outside the enclosure, also may be used equipped with controller, display, controller switching equipment etc. In embedded casing, or with casing split settings, various distribution and control device and line distribution are in casing.Pass through dividing plate 15 Various pipelines should do encapsulation process, prevent from leaking out.
When summer equipment works, in new bellows 1 in the presence of pressure fan 9, the fresh air of outdoor high temperature high humidity is from fresh wind port 3 Enter in cartonning, by the dust removal and filtration of filter 4, by air-cooled evaporator 5, by cool-down dehumidification, then heat and rise by reheater 6 Temperature, after the humiture for reaching setting, by pressure fan 9, air conditioning area is sent to from air outlet 10;The exhaust blower 17 in air exhaust box 2 In the presence of, outdoor fresh air is entered in cartonning from fresh wind port 11, indoor exhaust wind from air inlet 12, by the dedusting of filter 13 after mixing Filter, by air cooled condenser 14, is heated up, then drain into outdoor by exhaust blower 17, exhaust outlet 19.Because of indoor exhaust wind Temperature is lower than outside air temperature, and in air exhaust box 2, air cooled condenser 14 is cooled by indoor and outdoor air, indoor exhaust wind In cold be recycled.Indoor exhaust wind includes indoor harmless air, such as the air in office, also includes harmful sky Gas, such as:Bathroom odor, garage vehicle exhaust, kitchen fume etc., substantial amounts of energy is contained in these air drafts, recycled Used heat it is more.
When winter equipment works, air-conditioner set send hot blast to air-conditioned room, in new bellows 1, the air-cooled steaming of heat pump Hair device 5 is converted into condenser, for heating air;In air exhaust box 2, the air cooled condenser 14 of heat pump is converted into evaporation Device, for being absorbed heat from air.In new bellows 1 in the presence of pressure fan 9, the fresh air of outdoor low temperature enters cartonning from fresh wind port 3 It is interior, by the dust removal and filtration of filter 4, it is heated up by air-cooled evaporator 5, if humidity is low, also needs humidifier 7 to humidify, After the humidity for reaching setting, by water fender 8, by pressure fan 9, air conditioning area is sent to from air outlet 10;Arranged in air exhaust box 2 In the presence of blower fan 17, outdoor fresh air is entered in cartonning from fresh wind port 11, indoor exhaust wind from air inlet 12, by filter 13 after mixing Dust removal and filtration, by air cooled condenser 14 by absorbing and cooling temperature, outdoor is discharged to from exhaust outlet 19.Because indoor exhaust wind temperature is than outdoor Temperature is high, and heat energy therein is absorbed by air cooled condenser 14, and heat energy is recycled utilization.
When equipment is run, the controller switching equipment of power distribution control system is heat pump, pressure fan 9, exhaust blower 17, electronic air quantity Regulating tuyere, automatic control system provide power supply.Heat pump is varying capacity system, and compressor 18 is variable conpacitance compressor, is sent Blower fan 9, exhaust blower 17 are frequency controlling fan, and fresh wind port 3,11, exhaust outlet 19, air outlet 10, air inlet 12 are electronic air quantity Regulating tuyere, automatic control equipment control the capacity of compressor 18, automatically adjust system according to the change of indoor and outdoor air parameter The refrigerating capacity or heating capacity of cooling system, pressure fan 9 and rotating speed, the aperture in each air port of exhaust blower 17 are controlled, automatically adjusts wind Amount, ensures the efficient and stable operation of air-conditioner set.There are controller, display, sensor, actuator etc. in automatic control system Equipment, the control of generally use microcomputer(Such as PLC), there is the functions such as autonomous setup parameter, fault detect, automatic alarm, It can also can be controlled by touch-screen field control by computer keyboard, mouse long, and pass through LAN, interconnection Net realizes network control.
The said equipment, new bellows 1 are that Contiuum type is connected with air exhaust box 2, may be alternatively configured split type connection.When equipment is dispatched from the factory, The refrigerant circulation pipe that air-cooled evaporator 5 or air cooled condenser 14 are connected with heat pump main frame disconnects and sealed, All kinds of circuits being connected with electric cabinet 16 are also what is disconnected, and during in-site installation, refrigerant circulation pipe is connected by snap joint, respectively Class circuit accesses electric cabinet 16.Two casings can need to be placed on different positions according to user, and arrangement is more flexible, such as Air exhaust box 2 can be placed on roof, save floor space, reduce the influence of unit noise.
Fig. 2 is above-mentioned heat recovery fresh air conditioning group heat pump figure, when system carries out kind of refrigeration cycle, refrigerant circulation Process is:18 → oil eliminator of compressor, 21 → four-way reversing valve 22, then divides two-way, all the way → electric control valve 24 → air-cooled Formula condenser 14, another way → 23 → reheater of electric control valve 6, two-way converge → 25 → reservoir of four-way reversing valve 28 herein → device for drying and filtering 29 → shows 31 → four-way reversing valve of liquid mirror 30 → expansion throttling device 25, then divides two-way again, all the way → electronic Regulating valve 26 → air-cooled evaporator 5, another way → 27 → water-cooled of electric control valve evaporator 32, two-way converges → tetra- herein 33 → compressor of logical 22 → gas-liquid separator of reversal valve 18.Part of refrigerant condensation heat is used for reheater 6 and heats air, big portion Refrigerant condensation heat is divided to be discharged in air cooled condenser 14;Part of refrigerant evaporation endothermic in air-cooled evaporator 5, Most of refrigerant evaporation endothermic in water-cooled evaporator 32,7 ~ 12 DEG C of air-conditioning freezings are provided for indoor fan coil system Water.Water-cooled evaporator 32 is using the heat exchanger of the form such as shell-tube type, board-like, and heat transferring medium is refrigerant and air conditioner water, and it puts New bellows 1, air exhaust box 2 casing in or casing outside, be preferably placed in interior, place freezed in winter.Air cooled condenser 14 with Reheater 6, air-cooled evaporator 5 and water-cooled evaporator 32 are parallel relationships.The said equipment, refrigerant condensation heat pass through air-cooled Discharged in air cooled condenser 14 and reheater 6, air conditioner cold-heat is provided by the air-cooled heat exchange of the direct-expansion type of air-cooled evaporator 5 Wind, air conditioner cold and hot water is provided by the water cooling heat exchange of water-cooled evaporator 32, the heat pump can be described as air-cooled geomantic omen heat pump System.
The high pressure-temperature gaseous refrigerant discharged from compressor 18, with lubricating oil separation, passes through oil return in oil eliminator 21 Capillary 20, lubricating oil are back to compressor 18, and can also flow back lubricating oil otherwise.
When new bellows 1 are that Contiuum type is connected with air exhaust box 2, heat pump may be alternatively configured Contiuum type connection;When new bellows 1 When with air exhaust box 2 being split type connection, heat pump may be alternatively configured split type connection.
Heat pump figure shown in Fig. 3 is winter heating's circulation, and reheater 6 does not work, and air-cooled evaporator 5 is converted into cold Condenser heats air, and water-cooled evaporator 32 is converted into the hot water of condenser heating blower coil air conditioner system, air-cooled condensation Device 14 is converted into evaporator and absorbed heat from air.So, heat pump is also indoor fan disk while outdoor fresh air is heated Pipe provides air conditioning hot.
Heat pump figure shown in Fig. 4 first passes through air cooled condenser 14 in progress kind of refrigeration cycle, high-temperature high-pressure refrigerant, Then again by reheater 6 and electric control valve 34, reheater 6 and air cooled condenser 14 are series relationships, and the system also may be used Referred to as air-cooled geomantic omen heat pump.
In heat pump figure shown in Fig. 5, air-cooled evaporator 5, water-cooled evaporator 32, the circulation in reheater 6 are situated between Matter is water, and now air-cooled evaporator 5, reheater 6 become surface cooler, and water-cooled evaporator 32 is the air-cooled He of evaporator 5 Indoor fan coil air conditioner system provides air conditioning water, hot water, in the winter time, or reheater 6 provides hot water, for adding Hot outdoor fresh air.Water in high temperature refrigerant heat hot water device 36, heat air for reheater 6 or domestic hot-water is provided.Heat Hydrophone 36 with having heaters, high temperature refrigerant by when, heat running water therein, provide the user air conditioning hot and life heat Water, fuel cost is also saved, simultaneously because the heat of refrigerant is absorbed by running water, the resh air requirement for condensating refrigerant can To reduce, blower fan power consumption reduces.Water heater 36 can use the structure type such as helix tube type, shell-tube type, bushing type, board-like, make There are a pressure vessel or open type non-pressure vessel with enclosed, have pressure vessel using enclosed in figure, it is nearer from the exhaust outlet of compressor 18, Recuperation of heat effect is better.In the winter time, water heater 36 is generally stopped, and does not produce hot water, and the condensation heat of refrigerant is used for air-conditioning Heating, if water heater 36 can also produce hot water, it is necessary to increase power system capacity in the winter time, quantity of heat production is improved, such as:Increase compressor 18 power, the exhaust air rate of outdoor fresh air amount and exhaust blower 17 in increasing exhaust case 2.Water heater 36 can be placed in casing, also may be used Outside the enclosure is put, during the equipment heat supply in winter, it should be ensured that do not freeze.The unit part of refrigerant condensation heat passes through water heater 36 Hot water give reheater 6, water-cooled evaporator 32 becomes surface cooler, and air conditioner cold and hot water is provided by water-cooled evaporator 32, The heat pump can be described as air-water-cooled hydro-thermal pumping system.
Air-cooled evaporator 5 and water-cooled evaporator 32 are carried in Fig. 6 heat pumps, both are in parallel in systems, also may be used Double-cold source heat pump system referred to as in parallel, when carrying out kind of refrigeration cycle, it can realize the independent temperature-humidity control processing to air, Refrigerant circulating process is:18 → oil eliminator of compressor, 21 → four-way reversing valve 22, then divides two-way, all the way → motorized adjustment 24 → air cooled condenser of valve 14, another way → 23 → reheater of electric control valve 6, two-way converge → device for drying and filtering 29 herein 28 → four-way reversing valve of → expansion throttling device 31 → four-way reversing valve, 25 → reservoir 25, then divides two-way, all the way → expansion joint Flow 38 → device for drying and filtering of device 39 → air-cooled evaporator 5, another way → expansion throttling device 40 → device for drying and filtering, 41 → water cooling Formula evaporator 32, two-way converge → 22 → gas-liquid separator of four-way reversing valve, 33 → compressor 18 herein.Most of HTHP Liquid refrigerant passes through the throttling of expansion throttling device 40, becomes the low-temp low-pressure liquid refrigerant that evaporating temperature is 15 DEG C or so, Flow into water-cooled evaporator 32,16 DEG C of high-temperature air conditioner chilled water is provided for indoor dry-type fan coil, indoor return air is done The processing of dry type cooling down;Another part HTHP liquid refrigerant passes through the throttling of expansion throttling device 38, becomes evaporation temperature The low-temp low-pressure liquid refrigerant for 6 DEG C or so is spent, flows into air-cooled evaporator 5, outdoor high temperature highly humid air is dropped Temperature dehumidifying, by the reheating of reheater 6, is then sent directly into air-conditioned room, it is achieved that independently being controlled to the humiture of air System processing, because evaporating temperature improves, heat pump efficiency also improves.
When system carries out heating circulation, expansion throttling device 31 plays throttling action, air-cooled evaporator 5, water-cooled evaporation Device 32 is converted to condenser and is used to heat air and air conditioning hot.
In Fig. 7 heat pumps, air-cooled evaporator 5 and water-cooled evaporator 32 are series relationships, and alternatively referred to as series connection is double Cold source heat pump system.When system carries out kind of refrigeration cycle, expansion throttling device 31 or 42 throttling actions, refrigerant circulating process It is:18 → oil eliminator of compressor, 21 → four-way reversing valve 22, then divides two-way, all the way → 24 → air-cooled cold of electric control valve Condenser 14, another way → 23 → reheater of electric control valve 6, two-way converge → 29 → expansion throttling of device for drying and filtering device 31 herein 42 → device for drying and filtering of → four-way reversing valve 25 → reservoir, 28 → four-way reversing valve, 25 → expansion throttling device 43 → air-cooled steaming Send out 33 → compressor of device 5 → water-cooled evaporator 32 → four-way reversing valve, 22 → gas-liquid separator 18.HTHP liquid is freezed It is the low-temp low-pressure liquid refrigerant that evaporating temperature is 6 DEG C or so that agent, which is inflated the throttling of flow controller 31 or 42, flows into air-cooled steaming Send out in device 5, cool-down dehumidification is carried out to outdoor high temperature highly humid air, by the reheating of reheater 6, is then sent directly into air-conditioned room Between.6 DEG C or so of low-temp low-pressure liquid refrigerant evaporates by the heat absorption of air-cooled evaporator 5, becomes 15 DEG C or so of gas Or gas liquid mixture, into water-cooled evaporator 32,16 DEG C of air conditioning water is produced, for indoor dry-type fan coil pair Indoor return air does the processing of dry type cooling down, it is achieved thereby that handling the independent temperature-humidity control of air.
Fig. 8 is a kind of complete straight swollen(VRV)Multiple heat pump figure, outdoor air exhaust box 2 are new with 2 and the above Bellows 1 and fan coil 46.Air exhaust box 2 carries air-cooled steaming with air cooled condenser 14, heat pump main frame etc. in new bellows 1 Device 5, reheater 6 etc. are sent out, fan coil 46 is the heat exchanger of direct-expansion type structure.The heat pump is four-pipe system, and two pipes are with wind Cold type evaporator 5 and fan coil 46, during refrigeration, transporting low temperature low pressure refrigerant, during heating, convey high-temperature high-pressure refrigerant. Another two pipes band reheater 6, conveys high-temperature high-pressure refrigerant, for reheating, works as winter, can when some rooms still need refrigeration The air-cooled evaporator 5 closed in new bellows 1, reheater 6 is opened, it is converted into evaporator, and cold wind is sent to room, realizes same When heating, refrigeration purpose.
Fig. 9 is a kind of multiple heat recovery fresh air conditioning set constructor figure.Outdoor fresh air is sent to after the processing of wind pushing box 1 Air-conditioned room, row arrives outdoor after indoor exhaust wind is recovered energy in air exhaust box 2 by heat pump.The circular treatment room of indoor fan coil pipe 46 Interior air.Air exhaust box 2 is placed on outdoor, and air inlet 12 connects indoor exhaust wind, and air cooled condenser 14 also translates to evaporator, absorbs Cold and hot amount in indoor exhaust wind and outdoor fresh air, compressor 18 are placed in casing, outside the enclosure can be also put, for large capacity conditioner System, it is used in parallel that more air exhaust boxes 2 can be set;When indoor exhaust wind can not be all linked into outdoor air exhaust box 2, set indoors Air exhaust box 51, a part of indoor exhaust wind is accessed, different with said exhaust case 2, it does not fill compressor 18, fresh wind port 11, only Indoor exhaust wind is handled, air cooled condenser 14 also translates to evaporator, reclaims the cold and hot amount in indoor exhaust wind, it is mounted in room Interior, the wind pushing box 1 with serving identical air conditioning area can make monoblock type, can also make split type, be split in Fig. 9 Formula, it is arranged so as to more flexible and convenient;In wind pushing box 1, air-cooled evaporator 5 also translates to condenser, and reheater 6 can also turn Change evaporator into.Air exhaust box 2,51, new bellows 1, fan coil 46 are connected to low pressure gas pipe 48, high-pressure air pipe 49, high-pressure liquid tube On 50, three control of composition are complete straight swollen(VRV)System.Heat pump is only illustrated to connect three indoor units in figure(New bellows 1, row Bellows 51, fan coil 46), an outdoor unit(Air exhaust box 2), it can connect several indoor and outdoor units.When air conditioning area has When sufficiently large exhausting duct is arranged to outdoor, air exhaust box 51 can not be set, indoor exhaust wind is all in access air exhaust box 2.
Figure 10 is the heat pump figure of the group of multiple heat recovery fresh air conditioning shown in Fig. 9.Magnetic valve 52 is beaten in air exhaust box 2 Open, magnetic valve 53 is closed, and air cooled condenser 14 heats;Magnetic valve 52 is closed, and magnetic valve 53 is opened, and condenser 16 freezes.Row Magnetic valve 54 is opened in bellows 51, and magnetic valve 55 is closed, and air cooled condenser 14 heats;Magnetic valve 55 is opened, and magnetic valve 54 closes Close, air cooled condenser 14 freezes.There is reheater 6 in new bellows 1, expansion throttling device 63 controls the flow of refrigerant, passes through control Magnetic valve 58,59 processed, reheater 6 can also be converted into evaporator use, standby each other with evaporator 5.Magnetic valve 58 is opened, electricity Magnet valve 59 is closed, and reheater 6 heats;Magnetic valve 58 is closed, and magnetic valve 59 is opened, and reheater 6 freezes.Magnetic valve 61 is opened, electricity Magnet valve 60 is closed, and air-cooled evaporator 5 freezes;Magnetic valve 61 is closed, and magnetic valve 60 is opened, and air-cooled evaporator 5 heats.Pattern Converter 64 controls the refrigeration of fan coil 46 and the conversion of heating condition.
System shown in Figure 10 is three control systems, air-cooled evaporator 5, reheater 6, air cooled condenser 14, fan unit Pipe 46 is connected with low pressure gas pipe 48, high-pressure air pipe 49, high-pressure liquid tube 50, and the system has three kinds of operating modes:Freeze while make simultaneously While heating, other casings and fan coil can freeze for heat or a part of casing and fan coil.Assuming that the system exists Winter carries out heating circulation, and new bellows 1 send cold wind, and air-cooled evaporator 5 freezes, reheater 6 heats;Fan coil 46 heats, It is with new bellows 1 not in an air conditioning area;Air exhaust box 51 absorbs heat, and air cooled condenser 14 therein freezes;Air exhaust box 2 is inhaled Heat, air cooled condenser 14 therein freeze(It is refrigeration or heating, it is necessary to the computing and judgement that pass through automatic control system After perform).Therefore in above-mentioned refrigerant circulating process, heat that air-cooled evaporator 5, air cooled condenser 14 are absorbed It has been transmitted to fan coil 46, reheater 6.Therefore, by controlling magnetic valve opening and closing, the conversion of mode converter, realize each The transformation of unit operation operating mode, the needs of can meeting different air-conditioning places while freeze and heat, and different air-conditioning places Cold and hot amount can recycle mutually again, recovery total improve, obvious energy conservation, this multiple heat pump be also referred to as heat return Receipts type heat pump.Such as the office building that depth is larger, in the winter time, outskirt needs to send hot blast, and inner region needs to send cold wind, uses This equipment can meet to require.
Said system can also realize the independent control processing of aerial temperature and humidity, by adjusting the swollen of air-cooled evaporator 5 The aperture of the expansion throttling device of swollen flow controller 38 and fan coil 46, ensure evaporation temperature of the refrigerant in air-cooled evaporator 5 Spend for 6 DEG C, the evaporating temperature in fan coil 46 is 15 DEG C, and so, air-cooled evaporator 5 is to summer outdoor high temperature high humidity Fresh air carries out dehumidifying and cooling, and indoor dry-type fan coil 46 only does cooling processing to the return air of interior.
Figure 11 is another three control multiple heat recovery fresh air conditioning set constructor figures, and one group is placed on outdoor new bellows 1st, the fan coil 46 of air exhaust box 2, more than three, heat pump band.
Figure 12 is another three control multiple heat recovery fresh air conditioning set constructor figures, and it is the outdoor unit in Fig. 9,11 Group air exhaust box 2 has changed outdoor unit 65 into.It is by air cooled condenser 14, ventilating fan 66, compressor 18, refrigerant circulation pipe, Refrigeration system servicing unit, electric cabinet 16 etc. form, and outdoor unit 65 does not connect indoor exhaust wind, effect of the outdoor air in ventilating fan 66 Under, cooling or heating air cooled condenser 14, indoor units air exhaust box 51 are responsible for the heat energy of recovery indoor exhaust wind, and the unit is applicable It is inconvenient to outdoor extraction in indoor exhaust wind road, or without the available occasion of indoor exhaust wind.
Figure 13 is the heat pump figure of another multiple, includes air cooled condenser 14, the interior of outdoor air exhaust box 2 The air cooled condenser 14 of air exhaust box 51, the air-cooled evaporator 5 of new bellows 1 and reheater 6, fan coil 46.The system exists Heating circulation is carried out, reheater 6, fan coil 46 are heating, and air cooled condenser 14, air-cooled evaporator 5 are freezing, and pass through The heat of the air conditioning area serviced is delivered to the air conditioning area that fan coil 46 is serviced by circulation, air-cooled evaporator 5, Internal heat is recycled utilization.The system is also referred to as recovery type heat pump system, and above-mentioned three control systems difference, It is two pipes system, and by a flue and a highly pressurised liquid pipe, multiple units are connected.
Figure 14 is a kind of air-conditioning system figure, and its heat pump is the new bellows 1 of air conditioning terminal and blower fan as handpiece Water Chilling Units Coil pipe 46 provides air conditioning water and hot water.Water heater 36 is connected in parallel with air cooled condenser 14, and summer passes through high-temperature refrigeration Agent heat hot water, domestic hot-water is heated or provided for reheater 6, winter can utilize supplementary energy, such as solar energy, to hot water Hot water is inputted in device 36, for air-conditioning heating.Therefore the condenser of the heat pump can also be claimed by the way of air-cooled and water cooling For air-water-cooled handpiece Water Chilling Units.The summer of water-cooled evaporator 85 provides 7 ~ 12 DEG C of air-conditioning for the air-cooled evaporator 5 of new bellows 1 Chilled water, winter provide air conditioning hot.The summer of water-cooled evaporator 32 is the air conditioning water that fan coil 46 provides 7 ~ 12 DEG C, Winter provides air conditioning hot, and when being handled for independent temperature-humidity control, it is the height that dry-type fan coil 46 provides 16 ~ 21 DEG C Warm chilled water.The heat pump of this double low-temperature receivers is alternatively referred to as the double low-temperature receiver hydro-thermal pumping systems of air-water-cooled.If need not be warm and humid Independent control is spent, water-cooled evaporator 32,85 can be combined into one, and be the air-cooled evaporator 5 and fan coil 46 of new bellows 1 7 ~ 12 DEG C of air conditioning water, air conditioning hot is provided, the heat pump of this single low-temperature receiver is alternatively referred to as air-water-cooled list low-temperature receiver water System.Water-cooled evaporator 85 can also be cancelled, the refrigerant for allowing evaporating temperature to be 5 DEG C enters air-cooled evaporator 5, forms wind Low-temperature receiver and water cooling source are simultaneously deposited, and the heat pump of this double low-temperature receivers is alternatively referred to as air-water-cooled geomantic omen low-temperature receiver geomantic omen heat pump.On When stating water-cooled unit and being placed on outdoor, winter should be noted that antifreeze.
Figure 15 is another air-conditioning system figure, and unlike Figure 14, it eliminates water-cooled evaporator 85, air-cooled steaming Send out device 5 and fan coil 46 shares a water-cooled evaporator 32, in air-conditioning system end, air-cooled evaporator 5 and fan unit Pipe 46 is connected, and summer, 8 DEG C or so of air conditioning water first passed through air-cooled evaporator 5, to outdoor fresh air cool-down dehumidification, became 16 DEG C high temperature chilled water, be then sent through in dry-type fan coil 46, so as to realize to aerial temperature and humidity independent control processing.
Figure 16 air-conditioning systems are multiple systems, and the air-cooled evaporator 5 and reheater 6 of heat recovery fresh air conditioning group are adopted Exchanged heat with direct-expansion type, fan coil 46 is exchanged heat using water-cooled, and its heat pump can be described as air-cooled geomantic omen heat pump.
In summary, indoor fan coil pipe shares a heat pump with heat recovery fresh air unit, can place unit In roof or outdoor, floor space being reduced, the quantity of source pump is reduced, reduces investment cost, system maintenance operations are simple, Unit operation efficiency is high, and operating cost is low.
It is described above, only it is the preferable implementing method of the present invention, any formal limitation not is done to the present invention. Any simple modifications, equivalents, and modifications that technical spirit according to the present invention is done to above implementing method, belong to this The protection domain of invention.

Claims (3)

1. for fan coil and the heat pump of heat recovery fresh air conditioning group, it includes compressor, air cooled condenser, heat Hydrophone, expansion throttling device, evaporator, reheater, four-way reversing valve, servicing unit, heat recovery fresh air conditioning group include fresh air Case, air exhaust box, it is characterised in that water-cooled fan coil shares a set of heat pump with heat recovery fresh air conditioning group, and it is Water-cooled heat pump, heat pump provide air conditioner cold-heat source for fan coil and heat recovery fresh air conditioning group;Air-cooled cold Condenser is mounted in air exhaust box, and it is direct-expansion type structure coil heat exchanger, summer heat extraction into indoor exhaust wind and outdoor air, winter Evaporator is converted into absorb heat from indoor exhaust wind and outdoor air;Water heater is in casing or outside casing, by high-temperature refrigeration Agent and auxiliary heating source for heating hot water, there is provided domestic hot-water, reheater hot water, it is mounted in exhaust outlet of compressor and four-way reversing valve Between, or be arranged in parallel or in series in heat pump with air cooled condenser, form hot water cyclesystem with reheater;Evaporator has Air-cooled evaporator and water-cooled evaporator, air-cooled evaporator is housed in new bellows, it is surface cooler, using hot and cold water to new Wind cooling in summer dehumidifies, and winter heats to fresh air;Reheater is mounted in new bellows, and it is surface cooler, for being removed to cooling in summer Fresh air reheating or winter after wet heat to fresh air;Water-cooled evaporator summer is fan coil, air-cooled evaporator provides sky Adjust chilled water, winter is converted into condenser and provides air conditioning hot, it in the casing or outside casing, water-cooled evaporator with it is air-cooled Formula evaporator forms cold and hot water circulation system, and hot water cyclesystem is formed with reheater;Heat pump is using Contiuum type, split Formula, multiple connection.
2. for the heat pump of fan coil and heat recovery fresh air conditioning group, it includes compressor, air cooled condenser, again Hot device, air-cooled evaporator, water-cooled evaporator, expansion throttling device, four-way reversing valve, servicing unit, heat recovery fresh air air-conditioning Unit includes new bellows, air exhaust box, it is characterised in that it is the heat pump that water-cooled mixes with direct-expansion type, water-cooled blower fan Coil pipe shares a set of heat pump with direct-expansion type heat recovery fresh air conditioning group, and heat pump provides air conditioner cold-heat for fan coil Water, air conditioner cold-heat refrigerant is provided for heat recovery fresh air conditioning group;Air cooled condenser is mounted in air exhaust box, and it is direct-expansion type Structure coil heat exchanger, summer heat extraction into indoor exhaust wind and outdoor air, winter are converted into evaporator from indoor exhaust wind and room Absorbed heat in outer air;Air-cooled evaporator is housed in new bellows, it is direct-expansion type structure coil heat exchanger, and summer is as evaporator Fresh air cooling is dehumidified, winter is converted into condenser and fresh air is heated;Reheater is mounted in new bellows, and it is direct-expansion type structure disk Heat exchange of heat pipe, fresh air is heated for the fresh air reheating after being dehumidified to cooling in summer or winter;Air cooled condenser and reheater It is arranged in parallel or in series in heat pump;Water-cooled evaporator summer provides air conditioning water for fan coil, and winter is converted into cold Condenser provides air conditioning hot, and in casing or outside casing, water-cooled evaporator is arranged in parallel or in series in air-cooled evaporator for it In heat pump;Heat pump is using Contiuum type, split type, multiple connection.
3. according to claim 1 exist for fan coil and the heat pump of heat recovery fresh air conditioning group, its feature In water-cooled evaporator, air-cooled evaporator, dry-type fan coil, water circulating pump form cold and hot water circulation system, summer air-conditioning When, low temperature chilled water is introduced into air-cooled evaporator to outdoor fresh air cool-down dehumidification, becomes high temperature chilled water, enters back into dry type wind Machine coil pipe cools to indoor return air, so as to realize the independent temperature-humidity control processing to air.
CN201410156903.9A 2014-04-13 2014-04-18 For fan coil and the heat pump of heat recovery fresh air conditioning group Active CN103912947B (en)

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