CN109210820A - Multifunctional heat pump and switching method for implementing different functions thereof - Google Patents

Multifunctional heat pump and switching method for implementing different functions thereof Download PDF

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Publication number
CN109210820A
CN109210820A CN201811068851.4A CN201811068851A CN109210820A CN 109210820 A CN109210820 A CN 109210820A CN 201811068851 A CN201811068851 A CN 201811068851A CN 109210820 A CN109210820 A CN 109210820A
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CN
China
Prior art keywords
water
heating
refrigerant
heat exchanger
outdoor unit
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CN201811068851.4A
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Chinese (zh)
Inventor
史帆
薛文祥
袁明征
白国建
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201811068851.4A priority Critical patent/CN109210820A/en
Publication of CN109210820A publication Critical patent/CN109210820A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The invention discloses a novel multifunctional heat pump with functions of preparing domestic hot water, heating, air-conditioning refrigeration, defrosting and the like and a switching method for implementing different functions, wherein the multifunctional heat pump comprises the following components: the outdoor unit, a refrigerant-water heat exchanger connected with the outdoor unit in series, and a plurality of water systems communicated with the refrigerant-water heat exchanger. The invention adopts the connection mode of series connection of the outdoor unit and the refrigerant-water heat exchanger, and the refrigerant-water heat exchanger can be communicated with a plurality of water systems for heat exchange, so that the system parts are greatly reduced. The problems of multiple valves, complex control, large volume, complex installation, fewer functions and the like of the conventional heat pump system are effectively solved. The system can meet all-round living demands of hot water, heating and refrigeration in one station for users, can realize automatic heat recovery during refrigeration, and is efficient and energy-saving.

Description

A kind of multifunctional heat pump and its switching method for implementing different function
Technical field
It is the present invention relates to air-conditioning technical field, in particular to a kind of to convert with multi-functional heat pump and its different function Method for handover control.
Background technique
Current heat pump techniques are increasingly used for producing in domestic hot-water and heating.Domestic hot-water is produced generally to use The system schema of one-to-one, i.e. an outdoor unit connect a water tank, the composition of the set system are as follows: a compressor, as heat The driving of pumping system simultaneously provides power for refrigerant flowing;One air-side heat exchanger, and be evaporator, for absorbing in environment Heat;One condenser, the water heating for the heat being absorbed into the environment to be discharged into water tank, in feed-tank.Equally Heat pump principle, be used in heating.Domestic hot-water can much be produced simultaneously and provide the heat pump system of heating by currently also having, such as Shown in Fig. 1, the high temperature and pressure refrigerant that compressor 01 comes out is divided into two-way after four-way valve 02, passes through external disk pipe water tank 03 all the way Domestic hot-water is produced, i.e. condenser is looped around inner water tank outer surface, and refrigerant flows through water tank coil pipe and rejects heat to water tank In water, play heat effect;Another way is used as heating system by refrigerant-water- to-water heat exchanger 08, i.e. refrigerant flows through refrigerant-water and changes Hot 08 heating water of device.Refrigerant is returned to by electric expansion valve 06 and air-side heat exchanger 07 through four-way valve 02 after heat exchange Compressor 01.Refrigerant flow can be switched over by the folding of the first solenoid valve 04 and second solenoid valve 05.It lives when producing When hot water, the first solenoid valve is closed, second solenoid valve is opened;When heating, then the first solenoid valve is opened, second solenoid valve is closed It closes.Existing preparation domestic hot-water and the heat pump system refrigerant of heating divide two-way difference heating domestic hot water and heating hot water, so that Valve member is more, control is complicated;Domestic hot-water, heating difference are each using a heat exchanger, and interior needs to install water tank and heating heat Water generator occupies domestic space;Water tank uses coolant connecting tube to connect with host with heating, and installation is complicated;Due to system Complexity, complete machine cost are accordingly higher.
Therefore, how to overcome existing water heating and the heat pump system valve member of heating is more, function is less, volume is big, installation is multiple Miscellaneous and higher cost defect is industry urgent problem to be solved.
Summary of the invention
The present invention is in order to which the heat pump system valve member for solving existing water heating and heating is more, function is less, volume is big, installation is multiple The problem of miscellaneous and higher cost, proposes that a kind of structure is simplified, occupies little space, the multi-functional heat of energy-efficient and automatic recuperation of heat Pump and its switching method for implementing different function.
A kind of multifunctional heat pump proposed by the present invention, including outdoor unit, with the concatenated refrigerant-water- to-water heat exchanger of the outdoor unit, The multiple water systems being connected to the refrigerant-water- to-water heat exchanger.
Preferably, the water system includes hot-water heating system and heating system.
Preferably, the hot-water heating system includes water tank, water outlet and the water tank upper by the refrigerant-water- to-water heat exchanger The tank inlet pipe of connection, the radiator drain that the water inlet of the refrigerant-water- to-water heat exchanger is connected to the water tank lower part, is set to The hot water water pump of the radiator drain road.
Preferably, tank inlet pipe road is additionally provided with a hot water triple valve, a water outlet of the hot water triple valve It is connected to the top of the water tank, and another water outlet of hot water triple valve is connected to the middle part of the water tank.
Preferably, the heating system includes adopting what the water outlet of the refrigerant-water- to-water heat exchanger was connected to water inlet Heating coil road, the heating water pump set on the heating pipe road.
Preferably, heating pipe road is additionally provided with a heating three-way valve, and it is described which flow through water Refrigerant-water- to-water heat exchanger and recycle, alternatively, make water flow only recycled in the heating pipeline.
Preferably, the refrigerant-water- to-water heat exchanger is that triple heats exchange of heat pipe, tandem double-tube heat exchanger, tandem are board-like Any one of heat exchanger or high-efficiency tank.
It preferably, further include the outdoor unit being set between the outdoor unit heat exchanger and outdoor unit throttling set of the outdoor unit Solenoid valve;The air conditioner indoor unit of the heat pump is connected between the outdoor unit solenoid valve and outdoor unit throttling set;The air-conditioning Indoor unit includes at least a set of indoor unit throttling set and indoor set heat exchanger.
The present invention also proposes a kind of switching method of the implementation different function of multifunctional heat pump, and its step are as follows:
Step 1: selecting the operational mode of the heat pump as needed;
Step 2: corresponding component movement is adjusted, so that heat pump realizes corresponding function.
Preferably, when needing independent hot water preparing, heating mode operation is selected, heating water pump is closed, and hot water water pump is opened It opens, outdoor unit solenoid valve is open-minded, and indoor unit throttling set is closed;The refrigerant of heat pump compressor discharge enters described cold Matchmaker-water- to-water heat exchanger, the refrigerant exothermic condensation heat the cold water inputted by the hot-water heating system, and the hot water after heating returns to institute The water tank stated, for routine use.
Preferably, when the output water temperature of the refrigerant-water- to-water heat exchanger is lower than user's set temperature, the hot water is adjusted Triple valve inputs the water outlet of refrigerant-water- to-water heat exchanger first in the middle part of water tank.
Preferably, after refrigerant-water- to-water heat exchanger leaving water temperature reaches user's set temperature, then the hot water threeway is adjusted Valve makes refrigerant-water- to-water heat exchanger output delivery to water tank upper.
Preferably, when needing independent heating heating, heating mode operation is selected, hot water water pump is closed, and heating water pump is opened It opens, outdoor unit solenoid valve is open-minded, and indoor unit throttling set is closed;The refrigerant of compressor discharge enters the refrigerant-water heat exchange Heating is delivered in the refrigerant-water- to-water heat exchanger with water by the heating water pump and is heated by device, the water after heating It returns and is used as heating.
Preferably, when need to produce domestic hot-water and heating simultaneously heat when, select heating mode operation, hot water water pump with Heating water pump is opened simultaneously, and outdoor unit solenoid valve is open-minded, and indoor unit throttling set is closed;Described in the refrigerant of compressor discharge enters Refrigerant-water- to-water heat exchanger, domestic water and heating water are simultaneously by the refrigerant-water- to-water heat exchanger heating, the heat after heating Water respectively returns.
Preferably, when needing independent air conditioner indoor unit refrigeration, refrigeration mode operation, hot water water pump and heating water pump are selected It simultaneously closes off, outdoor unit solenoid valve is open-minded, and outdoor unit throttling set is closed;The refrigerant of compressor discharge is directly entered the sky Indoor unit heat absorption evaporation is adjusted to return to compressor later.
Preferably, when needing air conditioner refrigerating recuperation of heat hot water preparing, heating mode operation is selected, heating water pump is closed, Hot water water pump is opened, and outdoor unit solenoid valve is closed, and outdoor unit throttling set is open-minded;The refrigerant of compressor discharge enters described cold Matchmaker-water- to-water heat exchanger after heating flows through refrigerant-water- to-water heat exchanger domestic water, passes through out to the throttling of maximum outdoor unit and fills It sets, finally enters return compressor after the air conditioner indoor unit heat absorption evaporation.
Preferably, when needing the outdoor unit heat exchanger defrost, refrigeration mode operation is selected, outdoor unit solenoid valve is opened, Outdoor unit throttling set is opened, and indoor unit throttling set is closed, and hot water water pump is opened, and heating water pump is closed;Compressor is discharged cold Matchmaker enters the outdoor unit heat exchanger, flows through outdoor unit solenoid valve and outdoor unit throttling set, then pass through the refrigerant-water Compressor is returned after absorbing heat in heat exchanger and the water inputted from by water tank.
Preferably, the hot water triple valve closes the channel for being connected to the water tank upper, and refrigerant-water- to-water heat exchanger is flowed out Water be output in the middle part of water tank.
Preferably, it when defrost terminates, then changes heating mode operation into, reaches to refrigerant-water- to-water heat exchanger outflow coolant-temperature gage User's set temperature, which will be in the refrigerant-water- to-water heat exchanger outflow delivery to water tank Portion.
Novel the multi-functional heat pump system such as domestic hot-water, heating, air conditioner refrigerating, defrost is produced the present invention provides a kind of System, for solving the problems such as existing heat pump system valve member is more, control is complicated, volume is big, installation is complicated, and function is less.It can give User solves domestic hot-water, heating, the comprehensive life requirement of refrigeration one-stoply, and is able to achieve while refrigeration automatic Recuperation of heat, it is energy-efficient.The system can only have a water tank, an outdoor unit, can connect heating and can allow several air-conditionings Indoor unit.Outdoor unit can be installed in outdoor extension wall, and indoor only has a water tank, greatly reduces installation space.The present invention adopts With outdoor unit and the concatenated connection type of refrigerant-water- to-water heat exchanger, and the refrigerant-water- to-water heat exchanger is connected to multiple water systems Heat exchange, so that outdoor unit connects four coolant connecting tubes in total: two are connected to water tank, and two are connected to room conditioning.Water tank Connect four water pipes in total: two connection domestic water hot water pipes, two connection heating inlet and outlet pipes, systematic part greatly subtract It is few.
Detailed description of the invention
Fig. 1 is existing heat pump system flow diagram;
Fig. 2 is the schematic diagram of heat pump system process preferred embodiment of the present invention.
Specific embodiment
A kind of multifunctional heat pump proposed by the present invention comprising: outdoor unit, air conditioner indoor unit.Further include and outdoor unit string Refrigerant-water- to-water heat exchanger of connection, the multiple water systems being connected to the refrigerant-water- to-water heat exchanger.
As shown in Fig. 2, being the preferable implementation of Multifunctional heat pump system proposed by the present invention, the outdoor unit includes frequency conversion Compressor 1, the outdoor unit heat exchanger 2 with variable-frequency motor and fan blade, outdoor unit throttling set 3,4 gentle points 5 of four-way valve.
Refrigerant-the water- to-water heat exchanger is two sets of tandem double-tube heat exchangers, i.e. refrigerant-water- to-water heat exchanger is essentially all the way Refrigerant flow, two-way water route heat exchanger, refrigerant flow can be heated to two water routes simultaneously.Refrigerant-water- to-water heat exchanger can also To have other structures, e.g., any one of triple heats exchange of heat pipe, tandem plate heat exchanger or high-efficiency tank.The water system System includes providing the hot-water heating system and provide the heating system that heating is recycled with water that domestic water recycles.As needed and heat pump system The watt level of system, water system can be more sets and use water circulation system with refrigerant-water- to-water heat exchanger heat exchange.
Hot-water heating system includes: water tank 7, refrigerant-water- to-water heat exchanger hot water heat exchanger 8, by the water outlet of the hot water heat exchanger The tank inlet pipe 9 being connected to the water tank upper, the water tank that the water inlet of hot water heat exchanger is connected to the water tank lower part are discharged Pipe 10, the hot water water pump 11 on the radiator drain road 10 can use variable frequency pump.At least provided with three in water tank 7 A water tank temperature sensing package for precisely perceiving the hot water conditions of each point in water tank, and is assessed user according to the variation of water temperature automatically and is used Water state participates in the control of frequency-changeable compressor.A hot water triple valve 12 is additionally provided on water tank water intake pipeline 9, the hot water triple valve Water inlet be connected to the water outlet of hot water heat exchanger 8, one water outlet be connected to the top of water tank 7 and its another water outlet with The middle part of the water tank 7 is connected to.The hot-water heating system extracts cold water input hot water heat exchanger 8 by 7 bottom of water tank and exchanges heat, then hot water is returned 7 top of recovery tank.By the top output hot water of water tank for routine use, cold water is inputted by the lower part of water tank, and then is recycled.
Heating system includes: to be connected to the water outlet of the i.e. heating heat exchanger 18 of refrigerant-water- to-water heat exchanger with water inlet Heating pipeline, the heating water pump 19 set on the heating pipe road can use frequency conversion or determine the water pump of frequency.The heating water route can With by the outlet pipeline 13 of the water outlet of connection heating heat exchanger 18 with after heating heats return be connected to heating heat exchanger 18 Water inlet water return pipeline 14 constitute.Cold water after the heating system is heated heating by heating water pump 19 inputs heating heat-exchange Device 18 exchanges heat, then the water of heating is used for heating heating, so recycles.Heating pipe road is additionally provided with a heating three-way valve 15, should Heating three-way valve can make water flow recycle through heating heat exchanger, it is also possible that water flow only recycles in the heating pipeline.
Heat pump system of the invention further includes between the outdoor unit heat exchanger 2 and outdoor unit throttling set 3 of outdoor unit Outdoor unit solenoid valve 6.The cold media input tube road of the air conditioner indoor unit of the heat pump is connected to outdoor unit solenoid valve 6 and outdoor unit section It flows between device 3.The air conditioner indoor unit includes three sets of indoor unit throttling sets 16 and indoor set heat exchanger 17.Wherein each air-conditioning Indoor unit is connected to branch pipe, and two branch pipes are respectively connected to the disengaging connector of outdoor unit refrigerant.The indoor unit Throttling set 16 and outdoor unit throttling set 3 can use electric expansion valve.
Frequency-changeable compressor 1 of the invention can according to the cold water temperature of user side and the temperature difference of user's set temperature, and And the user's water state evaluated using water tank temperature sensing package, the running frequency of compressor is adjusted in real time, it is ensured that compressor horsepower Output quantity can satisfy user's water demand heat, be replenished in time heat guarantee user's water consumption.Variable-frequency motor can cooperate Frequency-changeable compressor, increases motor speed when compressor output quantity becomes larger, and increases outdoor unit heat exchanger 2 absorbed in the environment Heat (when heating mode).
The variable frequency pump 11 of water tank side may insure effluent temperature constancy.When 1 output quantity of compressor increases, or use When family side cold water temperature increases, revolving speed is promoted in time, so that refrigerant-water- to-water heat exchanger leaving water temperature is kept constant, it is ensured that user It is constant with water water temperature, promote comfort level.Hot water triple valve 12 can be when system be just switched on, at frequency-changeable compressor 1, variable-frequency motor Water in raising frequency state, hot water heat exchanger has little time to obtain sufficiently heating and reaches user's required temperature, then passes through the heat at this time Warm water in this part is imported into the middle part of water tank by water triple valve waterway switching flow path.Ensure that water tank upper remains as needed for user The hot water of temperature, it is ensured that user's water plug and play.Heating three-way valve 15 can work as user's big flow water, the output quantity of system When being unable to satisfy heating and hot water while heating, then preferentially guarantee domestic hot-water's use demand of user, at this time the heating threeway Valve 15 is switched to circulation inside heating water route and is not passed through heating heat exchanger 18, i.e., is not heated to heating with water temporarily.When User terminates domestic water, then continues after feed-tank is heated to water temperature needed for user, and heating three-way valve switching flow path continues pair Heating.
Different function operation may be implemented in the heat pump system of offer of the invention as needed, such as: individually producing life heat Water and the use for meeting plug and play, directly-heated water outlet, being infinitely discharged;Independent heating heating;Directly-heated water outlet and heating make jointly With;Independent air conditioner refrigerating;Air conditioner refrigerating heat reclamation heat-production water;Outdoor unit heat exchanger defrost.
The switching method of the implementation different function of multifunctional heat pump proposed by the present invention, its step are as follows (incorporated by reference to Fig. 1):
Step 1: selecting the operational mode of the heat pump as needed;
Step 2: corresponding component movement is adjusted, so that heat pump realizes corresponding function.
When needing independent hot water preparing, heating mode operation is selected, i.e. 4 coil of four-way valve must not electricity.Heating water pump 19 It closes, hot water water pump 11 is opened, and outdoor unit solenoid valve 6 is open-minded, and electronic expansion valve of indoor unit 16 is closed.The frequency-changeable compressor of heat pump The high temperature and pressure refrigerant of 1 discharge first flows through heating heat exchanger 18, and heating heat exchanger is only used as channel without heat exchange, and refrigerant is then Into hot water heat exchanger 8, the refrigerant condensation heat release of high temperature and pressure simultaneously heats the cold water inputted by hot-water heating system, the hot water after heating The water tank 7 is returned to, for routine use.Wherein, refrigerant circulation are as follows:
Compressor 1 → four-way valve, 4 → hot water heat exchanger, 8 → outdoor unit electric expansion valve 3 → outdoor unit, 6 → outdoor unit of solenoid valve changes 4 → gas of hot 2 → four-way valve of device point, 5 → compressor 1.
By the cold water of water tank bottom, (due to the natural layering principle of water, cold water concentrates on water tank bottom to variable frequency pump, heat Water concentrates on water tank upper) it is delivered in hot water heat exchanger, it is heated in hot water heat exchanger.In the process that system has just started In, the output water temperature of hot water heat exchanger is temporarily unable to reach user's set temperature, in order to not influence user's water (high-temperature-hot-water at this time Concentrate on water tank upper), therefore be delivered in the middle part of water tank by the middle warm water that hot water triple valve 12 has just exported these.System at this time It can tend towards stability rapidly, when system stable operation, the leaving water temperature of hot water heat exchanger reaches user's set temperature, then passes through heat Water triple valve waterway switching by the available delivery in this part to water tank upper directly for users to use.
When needing independent heating heating, heating mode operation is selected, hot water water pump 11 is closed, and heating water pump 19 is opened, Outdoor unit solenoid valve 6 is open-minded, and electronic expansion valve of indoor unit 16 is closed;The refrigerant that compressor 1 is discharged enters heating heat exchanger 18, leads to It crosses heating water pump and is delivered to 19 heating in heating heat exchanger 18 with water and heat, the water after heating, which returns, is used as heating.It is cold Matchmaker, by hot water heat exchanger 8, returns to compressor 1 after the heat exchange of heating heat exchanger 18.Hot water heat exchanger 8 be only used as channel without Heat exchange.Wherein, refrigerant circulation are as follows:
Compressor 1 → four-way valve, 4 → heating heat exchanger, 18 → outdoor unit electric expansion valve 3 → outdoor unit, 6 → outdoor unit of solenoid valve Heat exchanger 2 → four-way valve, 4 → gas point 5 → compressor 1.
When needing while producing domestic hot-water and heating heats, heating mode operation, hot water water pump 11 and heating are selected Water pump 19 is opened simultaneously, and outdoor unit solenoid valve 6 is open-minded, and electronic expansion valve of indoor unit 16 is closed;The refrigerant of compressor discharge is successively Heating water heat exchanger 18 and hot water heat exchanger 8 are flowed through, heating water and domestic water pass through heating water heat exchanger 18 and heat respectively Water- to-water heat exchanger 8 heats, and the hot water after heating respectively returns.Wherein, refrigerant circulation are as follows:
1 → four-way valve of compressor, 4 → heating water heat exchanger 18 and hot water heat exchanger 8 → outdoor unit, 3 → outdoor unit of electric expansion valve Solenoid valve 6 → outdoor unit heat exchanger, 2 → four-way valve, 4 → gas point 5 → compressor 1.
When needing independent air conditioner indoor unit refrigeration, refrigeration mode operation is selected, i.e., 4 coil of four-way valve obtains electric.Hot water water Pump 11 and heating water pump 19 simultaneously close off, and outdoor unit solenoid valve 6 is open-minded, and outdoor unit electric expansion valve 3 is closed;Compressor discharge Refrigerant is directly entered heat release in outdoor unit heat exchanger 2, enters air conditioner indoor unit using outdoor unit solenoid valve 6, that is, enters sky It adjusts electronic expansion valve of indoor unit 16 to throttle, and in 17 interior suction thermal evaporation of heat exchanger for air-conditioner indoor machine, finally comes back to room Outer machine compressor 1.Wherein, refrigerant circulation are as follows:
6 → electronic expansion valve of indoor unit of compressor 1 → four-way valve, 4 → outdoor unit heat exchanger, 2 → outdoor unit solenoid valve 16 → interior 17 → gas of machine heat exchanger point, 5 → compressor 1.
When needing air conditioner refrigerating recuperation of heat hot water preparing, heating mode operation is selected, heating water pump 19 is closed, hot water water Pump 11 is opened, and outdoor unit solenoid valve 6 is closed, and outdoor unit electric expansion valve 3 is open-minded.The refrigerant that compressor 1 is discharged first passes through heating Heat exchanger 18, but do not exchange heat, refrigerant passes through outdoor unit electronics after the domestic water for flowing through the heating input of hot water heat exchanger 8 Expansion valve 3, outdoor unit electric expansion valve is opened to maximum at this time, does not play throttling action, the channel only flowed through as refrigerant.Refrigerant is again Enter air conditioner indoor unit by the connecting tube of outdoor unit and air conditioner indoor unit, and passes through 16 section of electric expansion valve of air conditioner indoor unit After stream, 17 interior suction thermal evaporation of machine heat exchanger, finally comes back to compressor of outdoor unit 1 indoors.Wherein, refrigerant circulation are as follows:
16 → room of compressor 1 → four-way valve, 4 → hot water heat exchanger, 8 → outdoor unit, 3 → electronic expansion valve of indoor unit of electric expansion valve Interior 17 → gas of machine heat exchanger point 5 → compressor 1.
When needing the outdoor unit heat exchanger defrost, refrigeration mode operation is selected, i.e., 4 coil of four-way valve obtains electric.It is outdoor Electromechanical magnet valve 6 is opened, and outdoor unit electric expansion valve 3 is opened, and electronic expansion valve of indoor unit 16 is closed, and hot water water pump 11 is opened, heating water Pump 19 is closed.When defrost, the refrigerant that compressor 1 is discharged enters the outdoor unit heat exchanger 2, flows through 6 He of outdoor unit solenoid valve Outdoor unit electric expansion valve 3 after refrigerant flows through hot water heat exchanger 8 and absorbs heat in the water that inputs from by water tank, then passes through heating Heat exchanger 18, but do not exchange heat, return to compressor 1.Wherein, refrigerant circulation are as follows:
Compressor 1 → four-way valve, 4 → outdoor unit heat exchanger, 2 → outdoor unit solenoid valve 6 → outdoor unit, 3 → hot water of electric expansion valve changes 4 → gas of hot 8 → four-way valve of device point, 5 → compressor 1.
When defrost, refrigerant is by hot water heat exchanger from the water heat absorption in water tank, and the leaving water temperature of hot water heat exchanger is low at this time In user's set temperature, water is output in the middle part of water tank by hot water threeway Vavle switching.Defrost terminates, and system changes heating mode into again, After system stable operation, the leaving water temperature of hot water heat exchanger reaches user's set temperature, and waterway switching will again for hot water triple valve Directly for users to use to water tank upper, the influence defrost to user reduces the available delivery in this part, guarantees Comfort.
Heat pump system of the present invention is using refrigerant-water- to-water heat exchanger all the way, and refrigerant flow can be carried out to multichannel water route respectively all the way Heating, can also by unit moving component act individually to certain, water route is heated all the way.To simplify machine system, simplify control System, save the cost.By the control to each moving component (compressor, water pump, blower, electric T-shaped valve), reach domestic water Constant comfortable effect, and can satisfy different directly-heateds in the case of water and go out hot water, without the demand for limiting the use of water.Whole system installation Simplicity, only water tank, outdoor unit, air conditioner indoor unit, outdoor unit and water tank, air conditioner indoor unit respectively pass through two coolant connecting tube phases Even.Domestic water is similarly respectively connected by two water pipes with heating with water.It is configured by full DC frequency-changing, realizes directly-heated and go out Water, and the miniaturization of water tank may be implemented, save installation space.And machine is adjusted according to the service condition real-time and precise of user side Group output, adaptive degree is high, using comfortable.Air conditioner indoor unit is referred to by the opening and closing of electric expansion valve to execute air conditioner refrigerating It enables, the valve member for participating in air conditioner refrigerating has than existing system project significantly simplifies.Air conditioner indoor unit electric expansion valve can be same When switching system air conditioner refrigerating flow path and adjustment process of refrigerastion in coolant quantity.The system can realize that refrigeration automatic heating returns Function is received, domestic hot-water is provided while air conditioner refrigerating, it is energy saving to the maximum extent.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Any modification, equivalent replacement, improvement and so within principle, should all be included in the protection scope of the present invention.

Claims (19)

1. a kind of multifunctional heat pump, including outdoor unit, which is characterized in that further include being changed with the concatenated refrigerant-water of the outdoor unit Hot device, the multiple water systems being connected to the refrigerant-water- to-water heat exchanger.
2. multifunctional heat pump as described in claim 1, which is characterized in that the water system includes hot-water heating system and heating system System.
3. multifunctional heat pump as claimed in claim 2, which is characterized in that the hot-water heating system includes water tank, will be described cold The tank inlet pipe that matchmaker-water- to-water heat exchanger water outlet is connected to the water tank upper, by the water inlet of the refrigerant-water- to-water heat exchanger with The radiator drain of water tank lower part connection, the hot water water pump set on the radiator drain road.
4. multifunctional heat pump as claimed in claim 3, which is characterized in that the tank inlet pipe road is additionally provided with a hot water One water outlet of triple valve, the hot water triple valve is connected to the top of the water tank, another water outlet of the hot water triple valve Mouth is connected to the middle part of the water tank.
5. multifunctional heat pump as claimed in claim 4, which is characterized in that the heating system includes by the refrigerant-water Heating pipeline that the water outlet of heat exchanger is connected to water inlet, the heating water pump set on the heating pipe road.
6. multifunctional heat pump as claimed in claim 5, which is characterized in that the heating pipe road is additionally provided with a heating threeway Valve, the heating three-way valve make water flow through the refrigerant-water- to-water heat exchanger and recycle, alternatively, making water flow only in the heating pipe It is recycled in road.
7. multifunctional heat pump as described in claim 1, which is characterized in that the refrigerant-water- to-water heat exchanger is triple tube heat exchange Any one of device, tandem double-tube heat exchanger, tandem plate heat exchanger or high-efficiency tank.
8. multifunctional heat pump as claimed in claim 7, which is characterized in that further include the outdoor unit heat exchange set on the outdoor unit Outdoor unit solenoid valve between device and outdoor unit throttling set;The air conditioner indoor unit of the heat pump is connected to the outdoor unit electromagnetism Between valve and the outdoor unit throttling set;The air conditioner indoor unit includes that at least a set of indoor unit throttling set and indoor unit change Hot device.
9. a kind of switching method of the implementation different function of multifunctional heat pump as claimed in claim 8 comprising steps are as follows:
Step 1: selecting the operational mode of the heat pump as needed;
Step 2: corresponding component movement is adjusted, so that heat pump realizes corresponding function.
10. switching method as claimed in claim 9, which is characterized in that when needing independent hot water preparing, select heating mode Operation, heating water pump are closed, and hot water water pump is opened, and outdoor unit solenoid valve is open-minded, and indoor unit throttling set is closed;The heat pump pressure The refrigerant of contracting machine discharge enters the refrigerant-water- to-water heat exchanger, and the refrigerant exothermic condensation heating is defeated by the hot-water heating system The cold water entered, the hot water after heating return to the water tank.
11. switching method as claimed in claim 10, which is characterized in that when the output water temperature of the refrigerant-water- to-water heat exchanger is low When user's set temperature, adjusts the hot water triple valve and the water outlet of refrigerant-water- to-water heat exchanger is first inputted in the middle part of water tank.
12. switching method as claimed in claim 11, which is characterized in that the leaving water temperature of the refrigerant-water- to-water heat exchanger reaches After user's set temperature, then adjusts the hot water triple valve and make refrigerant-water- to-water heat exchanger output delivery to water tank upper.
13. switching method as claimed in claim 10, which is characterized in that when needing independent heating heating, selection heating mould Formula operation, hot water water pump are closed, and heating water pump is opened, and outdoor unit solenoid valve is open-minded, and indoor unit throttling set is closed;Compressor row Refrigerant out enters the refrigerant-water- to-water heat exchanger, and heating is delivered to the refrigerant-with water by the heating water pump It is heated in water- to-water heat exchanger, the hot water after heating, which returns, is used as heating.
14. switching method as claimed in claim 13, which is characterized in that when needs while producing domestic hot-water and heating heating When, heating mode operation is selected, hot water water pump and heating water pump are opened simultaneously, and outdoor unit solenoid valve is open-minded, indoor unit throttling dress Set closing;The refrigerant of compressor discharge enters described in the refrigerant-water- to-water heat exchanger, domestic water and heating water while process Refrigerant-water- to-water heat exchanger heating, the hot water after heating respectively returns.
15. switching method as claimed in claim 14, which is characterized in that when needing independent air conditioner indoor unit refrigeration, selection Refrigeration mode operation, hot water water pump and heating water pump simultaneously close off, and outdoor unit solenoid valve is open-minded, and outdoor unit throttling set is closed; The refrigerant of compressor discharge returns to compressor after being directly entered the air conditioner indoor unit heat absorption evaporation.
16. switching method as claimed in claim 15, which is characterized in that when needing air conditioner refrigerating recuperation of heat hot water preparing, Heating mode operation is selected, heating water pump is closed, and hot water water pump is opened, and outdoor unit solenoid valve is closed, and outdoor unit throttling set is opened It is logical;The refrigerant of compressor discharge enters the refrigerant-water- to-water heat exchanger, and heating flows through refrigerant-water- to-water heat exchanger domestic water Afterwards, it passes through out and returns to pressure after finally entering the air conditioner indoor unit heat absorption evaporation to maximum outdoor unit throttling set Contracting machine.
17. switching method as claimed in claim 16, which is characterized in that when needing the outdoor unit heat exchanger defrost, choosing Refrigeration mode operation is selected, outdoor unit solenoid valve is opened, and outdoor unit throttling set is opened, and indoor unit throttling set is closed, and hot water water pump is opened It opens, heating water pump is closed;The refrigerant of compressor discharge enters the outdoor unit heat exchanger, flows through outdoor unit solenoid valve and outdoor Machine throttling set, then pass through the refrigerant-water- to-water heat exchanger and return to compressor after absorbing heat in the water that inputs from by water tank.
18. switching method as claimed in claim 17, which is characterized in that the hot water triple valve, which is closed, is connected to the water tank Refrigerant-water- to-water heat exchanger outflow water is output in the middle part of water tank by the channel on top.
19. switching method as claimed in claim 18, which is characterized in that when defrost terminates, then change heating mode operation into, to Refrigerant-water- to-water heat exchanger outflow coolant-temperature gage reaches user's set temperature, the hot water triple valve waterway switching, by the refrigerant-water The delivery of heat exchanger outflow is to water tank upper.
CN201811068851.4A 2018-09-13 2018-09-13 Multifunctional heat pump and switching method for implementing different functions thereof Pending CN109210820A (en)

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