Speed heat combined supply system
Technical field
The present invention relates to air conditioner heat pump system field, specially a kind of speed heat combined supply system.
Background technique
Existing overwhelming majority air-conditioning heat pump product, air-conditioning is based on freezing or heat, when air-conditioning is in refrigeration or heating, meeting
To a large amount of heat of outdoor discharge or cold air;Its heat pump is based on water heating, can be to outdoor discharge when unit carries out water heating
A large amount of cold air;Therefore most air-conditioning heat pump products but also have a single function not only without comprehensive energy utilization at this stage.
The mode of existing combined supply system, the heat exchange of heat exchanger end can be divided into two classes:
A kind of fluorine circulation pattern: " trilogy supply as disclosed in the Chinese invention patent application of Publication No. CN103307805A
Heat pump system ", end is exchanged heat with fluorine circulation.When the road heat exchanger Nei Fu leaks, water quality can be polluted;Water enters system
Cooling system will lead to the parts damages such as refrigeration system inner compressor;Refrigeration circuit is too long, and resistance is excessive, it may appear that oil return difficulty etc.
Problem.
The water circulation model: " energy-saving air conditioning as disclosed in the Chinese invention patent application of Publication No. CN101813401A
Hot water tri-generation system ", end is exchanged heat with water circulation.One, two compressor of case is used to manufacture domestic hot-water, separately
One is used to control air conditioning terminal.When any refrigeration system breaks down, unit can lose corresponding function;The unit two
Compressor can not be completed at the same time same function.
Also some heat exchange ends are the trilogy supply that water recycles, and air-conditioner circulating water and domestic hot-water mix, be easy in this way
Lead to air-conditioning heat exchanger fouling, while domestic hot-water cannot keep cleaning health.
In conclusion existing air-conditioning products there are the problem of have:
1) air-conditioning heat pump product function is single, and resource utilization is low, cannot quickly exchange heat.
2) coolant leakage of trilogy supply can pollute water quality, and oil return is difficult, can not tandem working, heat exchange end is mixed water and be will affect
It unit performance and is cleaned with water.
Summary of the invention
The shortcomings that in order to overcome the prior art to refer to, for energy-saving and emission-reduction, comprehensively utilizes the purpose of resource, and solves to change
The problems such as water is mixed in hot end, oil return is difficult, the present invention provide that a kind of scope of application is wider, and faster, function is more by heat transfer rate, performance
It is more stable, the higher speed heat combined supply system of resource utilization.
The technical solution adopted by the present invention to solve the technical problems is: speed heat combined supply system, including the first compressor
Refrigeration system, the second compressor refrigeration system, First Heat Exchanger, the second heat exchanger, boiler, the first water pump and the first cut-off
Valve, the 5th interface C that the boiler connects second heat exchanger and the 6th interface D-shaped are at circulation stream, the boiler
Second water pump, first compressor refrigeration system and the second compressor refrigeration system are installed between second heat exchanger
Structure is identical, includes compressor, gas-liquid separator, evaporator, first throttle component, economizer and four-way valve, the pressure
Contracting machine is connect with the first interface D of the four-way valve, first compressor refrigeration system and the second compressor refrigeration system
The second interface of four-way valve is separately connected the first interface A of the First Heat Exchanger and the second heat exchanger, the First Heat Exchanger
Second interface B with the second heat exchanger is respectively and described in first compressor refrigeration system and the second compressor refrigeration system
The first interface A connection of economizer, the second interface B of the economizer are connect with the first throttle component, the first segment
Stream unit is connect with the evaporator, and the evaporator is connect with the third interface E of the four-way valve, and the 4th of the four-way valve the
Interface S is connect with the gas-liquid separator, and the gas-liquid separator is connect with the compressor, and result in formation of compressor evaporations
The circulation of device branch;Institute is connected after the third interface E of the First Heat Exchanger is in parallel with the third interface E of second heat exchanger
State the first water pump, the water outlet of the other end connection air conditioning terminal of first water pump, the 4th interface F of the First Heat Exchanger
Connect the water inlet of air conditioning terminal, the 4th interface F connection first shut-off valve of second heat exchanger, first cut-off
The other end of valve connects the 4th interface F of the First Heat Exchanger.
First compressor refrigeration system and the second compressor refrigeration system are additionally provided with air injection enthalpy-increasing branch, the jet
Increasing enthalpy branch includes the second throttle part and the second shut-off valve, the First Heat Exchanger, the second interface B of the second heat exchanger and institute
State the connection of the second shut-off valve, second shut-off valve connect with second throttle part, second throttle part with it is described
The third interface C connection of economizer, the 4th interface D of the economizer are connect with the compressor.Compressor is formed in this way
Air injection enthalpy-increasing branch forms compressor refrigeration system by the combination of the evaporator branch and air injection enthalpy-increasing branch of compressor
Circulation.
Further include having expansion drum, the 4th interface F connection expansion drum of the First Heat Exchanger, the expansion drum it is another
One end connects the water inlet of the air conditioning terminal.
Speed heat combined supply system of the invention can realize separate refrigeration, independent heating, independent water heating, in water heating when system
It is cold, in water heating heating totally five operating modes:
1) separate refrigeration: under separate refrigeration mode, the second shut-off valve of air injection enthalpy-increasing branch road is closed, boiler branch
On the second water pump close, the first water pump and the first shut-off valve on air conditioning terminal circuit are opened, first compressor refrigeration
The compressor of system and the second compressor refrigeration system opens work.
The circulation stream of two compressors is equal are as follows: the refrigerant of high temperature and pressure flows to four-way valve by compressor, then by four-way valve
Evaporator heat release cooling is flowed to, the refrigerant after cooling flows into economizer after throttle part throttles, and refrigerant is flowed to by economizer
Heat exchanger, the refrigerant of low-temp low-pressure reduces water temperature in heat exchanger in heat exchanger interior suction thermal evaporation, cold after heat exchanger heat absorption
Matchmaker flows to gas-liquid separator through four-way valve, then flows back to compressor by gas-liquid separator, completes the circulation of compressor refrigeration flow path.
The circulation of air conditioning terminal: under the drive of the first water pump, the hot water flowed back to from air conditioning terminal is by the first water pump stream
Heat exchanger to low temperature carries out heat exchange, cooling of the hot water through heat exchanger, and the cold water that the hot water of high temperature changes into low temperature flows back to air-conditioning
Freeze end.
By the cycle operation of above-mentioned each flow path, system completes the function of separate refrigeration, in two compressor tandem working moulds
Fast-refrigerating is realized under formula.
2) individually heating: under independent heating mode, the second water pump of boiler branch road is closed, on air conditioning terminal circuit
The first water pump and the first shut-off valve open, the compressor of first compressor refrigeration system and the second compressor refrigeration system
Open work.
The circulation stream of two compressors is equal are as follows: the refrigerant of high temperature and pressure flows to four-way valve by compressor, then by four-way valve
Heat exchanger is flowed to, the heat release in heat exchanger of the refrigerant of high temperature cools down, and increases water temperature in heat exchanger, the refrigerant warp after heat release cooling
It crosses economizer and flows to throttle part or throttle part before evaporator, refrigerant flows to evaporator heat absorption after throttle part throttles
Evaporation, the refrigerant after heat absorption evaporation flow to gas-liquid separator through four-way valve, finally flow back to compressor, complete compression mechanism hot flowpath
Circulation.
In a heating mode, when outdoor environment temperature is lower than certain value, the shut-off valve of air injection enthalpy-increasing branch road is opened, cold
Matchmaker is divided into two after heat exchanger cools down, and flows to evaporator heat absorption evaporation by economizer all the way, and another way increases by jet
Economizer heat absorption evaporation is flowed back to after the throttling of the shut-off valve and throttle part of enthalpy branch road, the refrigerant after heat absorption evaporation is through economizer
Compressor is flowed back to, realizes enthalpy-increasing function.
The circulation of air conditioning terminal: under the drive of the first water pump, the cold water flowed back to from air conditioning terminal is by the first water pump stream
Heat exchanger to high temperature carries out heat exchange, heating of the cold water through heat exchanger, and the hot water stream that the cold water of low temperature changes into high temperature is made the return trip empty tune
End is heated.
By the cycle operation of above-mentioned each flow path, system completes the function of individually heating, in two compressor tandem working moulds
Quickly heating is realized under formula.
3) independent water heating: under independent hot water model, the compressor of the first compressor refrigeration system, the first shut-off valve
It is closed with the first water pump, the second water pump is opened.
The circulation stream of the compressor of second compressor refrigeration system are as follows: the refrigerant of high temperature and pressure flows to four-way by compressor
Valve, then flows to the second heat exchanger by four-way valve, and the heat release in the second heat exchanger of the refrigerant of high temperature cools down, makes in the second heat exchanger
Water temperature increases, and the refrigerant after heat release cooling flows to the throttle part before evaporator by economizer, and refrigerant passes through throttle part section
Evaporator heat absorption evaporation is flowed to after stream, the refrigerant after heat absorption evaporation flows to gas-liquid separator through four-way valve, finally flows back to compressor,
Complete the circulation of compression mechanism hot flowpath.
Under hot water model, when outdoor environment temperature is lower than certain value, the shut-off valve of air injection enthalpy-increasing branch road is opened,
Refrigerant is divided into two after the cooling of the second heat exchanger, flows to evaporator heat absorption evaporation by economizer all the way, and another way is passed through
Economizer heat absorption evaporation, the refrigerant warp after heat absorption evaporation are flowed back to after the throttling of the shut-off valve and throttle part of air injection enthalpy-increasing branch road
Economizer flows back to compressor, realizes enthalpy-increasing function.
In order to be suitable for low temperature environment, system uses the hot pump in low temp system of air injection enthalpy-increasing;In order to simultaneously refrigeration or
Heating, system devise concatenated operating mode;In order to which separated water heating or air-conditioning exchange heat, system devises Working mould in parallel
Formula;In order to improve the independence of unit function, system devises double-compressor and its corresponding refrigeration system;In order to avoid oil return
The machine group end heat exchange mode of the problems such as hardly possible, pollution water quality, system design are water circulation.
Water heating flow path: under hot water model, the cold water inside boiler flows to second under the drive of the second water pump
Heat exchanger carries out heat exchange, and cold water becomes to flow back to boiler by the second heat exchanger after hot water, realizes water heating function.
By the cycle operation of above-mentioned each flow path, system realizes the function of independent water heating.
4) freeze when water heating: in water heating under refrigeration mode, the first shut-off valve is closed, the second water pump and the first water pump
It opens, the compressor of first compressor refrigeration system and the second compressor refrigeration system opens work.
The circulation of the compressor refrigeration flow path of first compressor refrigeration system: the refrigerant of high temperature and pressure flows to four by compressor
Port valve then flows to evaporator heat release cooling by four-way valve, and the refrigerant after cooling flows into economizer after throttle part throttles, cold
Matchmaker flows to heat exchanger by economizer, and the refrigerant of low-temp low-pressure reduces water temperature in heat exchanger in heat exchanger interior suction thermal evaporation,
Refrigerant after heat exchanger heat absorption flows to gas-liquid separator through four-way valve, then flows back to compressor by gas-liquid separator, completes compression
The circulation of mechanism cold flow path.
The circulation of air conditioning terminal: under the drive of the first water pump, the hot water flowed back to from air conditioning terminal is by the first water pump stream
Heat exchanger to low temperature carries out heat exchange, cooling of the hot water through heat exchanger, and the cold water that the hot water of high temperature changes into low temperature flows back to air-conditioning
Freeze end.
By the cycle operation of above-mentioned each flow path, system completes refrigerating function when water heating under refrigeration mode.
The circulation stream of the compressor of second compressor refrigeration system are as follows: the refrigerant of high temperature and pressure flows to four-way by compressor
Valve, then flows to the second heat exchanger by four-way valve, and the heat release in the second heat exchanger of the refrigerant of high temperature cools down, makes in the second heat exchanger
Water temperature increases, and the refrigerant after heat release cooling flows to the throttle part before evaporator by economizer, and refrigerant passes through throttle part section
Evaporator heat absorption evaporation is flowed to after stream, the refrigerant after heat absorption evaporation flows to gas-liquid separator through four-way valve, finally flows back to compressor,
Complete the circulation of compression mechanism hot flowpath.
Under hot water model, when outdoor environment temperature is lower than certain value, the shut-off valve of air injection enthalpy-increasing branch road is opened,
Refrigerant is divided into two after the cooling of the second heat exchanger, flows to evaporator heat absorption evaporation by economizer all the way, and another way is passed through
Economizer heat absorption evaporation, the refrigerant warp after heat absorption evaporation are flowed back to after the throttling of the shut-off valve and throttle part of air injection enthalpy-increasing branch road
Economizer flows back to compressor, realizes enthalpy-increasing function.
Water heating flow path: under hot water model, the cold water inside boiler flows to second under the drive of the second water pump
Heat exchanger carries out heat exchange, and cold water becomes to flow back to boiler by the second heat exchanger after hot water, realizes the circulation of water heating flow path.
By the cycle operation of above-mentioned each flow path, system completes water heating function when water heating under refrigeration mode.
In short, realizing water heating when system under two compressor parallel operating modes by the cycle operation of above each flow path
It is cold.
5) heat when water heating: in water heating under heating mode, the second water pump and the first water pump are opened, first pressure
The compressor of contracting machine cooling system and the second compressor refrigeration system opens work.
The circulation stream of two compressors is equal are as follows: the refrigerant of high temperature and pressure flows to four-way valve by compressor, then by four-way valve
Heat exchanger is flowed to, the heat release in heat exchanger of the refrigerant of high temperature cools down, and increases water temperature in heat exchanger, the refrigerant warp after heat release cooling
It crosses economizer and flows to throttle part or throttle part before evaporator, refrigerant flows to evaporator heat absorption after throttle part throttles
Evaporation, the refrigerant after heat absorption evaporation flow to gas-liquid separator through four-way valve, finally flow back to compressor, complete compression mechanism hot flowpath
Circulation.
In a heating mode, when outdoor environment temperature is lower than certain value, the shut-off valve of air injection enthalpy-increasing branch road is opened, cold
Matchmaker is divided into two after heat exchanger cools down, and flows to evaporator heat absorption evaporation by economizer all the way, and another way increases by jet
Economizer heat absorption evaporation is flowed back to after the throttling of the shut-off valve and throttle part of enthalpy branch road, the refrigerant after heat absorption evaporation is through economizer
Compressor is flowed back to, realizes enthalpy-increasing function.
The circulation of air conditioning terminal: under the drive of the first water pump, the cold water flowed back to from air conditioning terminal is by the first water pump stream
Heat exchanger to high temperature carries out heat exchange, heating of the cold water through heat exchanger, and the hot water stream that the cold water of low temperature changes into high temperature is made the return trip empty tune
End is heated or is flowed back to boiler.
By the cycle operation of above-mentioned each flow path, two compressors are realized under parallel operation mode and are heated when water heating.
In this way, design of the system by above-mentioned relevant operation modes and circulation pattern, makes the speed heat trilogy supply scope of application
Wider, faster, function is more by heat transfer rate, and performance is more stable, and resource utilization is higher.
The beneficial effects of the present invention are:
1) function is more: refrigeration and when water heating when unit has separate refrigeration, individually heating, independent water heating, water heating
Heat five kinds of functions;
2) heat transfer rate is fast: double-compressor quickly can be heated or be freezed according to room conditioning demand;
3) system is reasonable: heat exchanger end is water circulation, can avoid heat exchanger end and is that the oil return of fluorine Cycle Unit is difficult, exchanges heat
The problems such as device leakage and pollution water quality;
4) utilization rate is high: using double-compressor, system is more durable, as long as having compression function normal work, system function
It will not all be lost due to partial fault;
5) applied widely: system uses air injection enthalpy-increasing technology, is applicable to low temperature environment.
Detailed description of the invention
Fig. 1 be it is of the invention can recuperation of heat combined supply system figure;
Fig. 2 is the separate refrigeration system diagram of invention;
Fig. 3 is the independent heating system figure of invention;
Fig. 4 is the independent water heating system diagram of invention;
Refrigerating system figure when Fig. 5 is the water heating of invention;
Heating system figure when Fig. 6 is the water heating of invention;
Fig. 7 is four-way valve Wiring port enlarged diagram of the invention;
Fig. 8 is economizer Wiring port enlarged diagram of the invention.
Specific embodiment
The present invention is further detailed with reference to the accompanying drawing.Wherein, arrows direction is in the channel in figure
Fluid flow direction.
As shown in figs. 1,7 and 8, speed heat combined supply system, including the first compressor refrigeration system, the second compression mechanism
Cooling system, First Heat Exchanger 19, the second heat exchanger 13, boiler 15, the first water pump 16 and the first shut-off valve 18, the boiler
5th interface C of 15 connection second heat exchangers 13 and the 6th interface D-shaped are at circulation stream, the boiler 15 and described the
Second water pump 14 is installed between two heat exchangers 13;
First compressor refrigeration system and the second compressor refrigeration system structure are identical, first compressor refrigeration
System includes compressor 1, gas-liquid separator 2, evaporator 3, first throttle component 5, economizer 6 and (the second pressure of four-way valve 22
Contracting machine cooling system correspondence includes compressor 21, gas-liquid separator 7, evaporator 8, first throttle component 9, economizer 12 and four
Port valve 20), the compressor 1 (21) connect with the first interface D of the four-way valve 22 (20), first compressor refrigeration system
The second interface C of the four-way valve 22 and four-way valve 20 of system and the second compressor refrigeration system is separately connected the First Heat Exchanger 19
With the first interface A of the second heat exchanger 13, the second interface B of the First Heat Exchanger 19 and the second heat exchanger 13 respectively with it is described
The economizer 6 of first compressor refrigeration system and the second compressor refrigeration system is connected with the first interface A of economizer 12,
The second interface B of the economizer 6 (12) is connect with the first throttle component 5 (9), the first throttle component 5 (9) and institute
Evaporator 3 (8) connection is stated, the evaporator 3 (8) connect with the third interface E of the four-way valve 22 (20), the four-way valve 22
(20) the 4th interface S is connect with the gas-liquid separator 2 (7), and the gas-liquid separator 2 (7) and the compressor 1 (21) are even
It connects, result in formation of the circulations of compressor evaporator branch;The third interface E of the First Heat Exchanger 19 and second heat exchange
First water pump 16 is connected after the third interface E of device 13 is in parallel, the other end connection air conditioning terminal of first water pump 16
Water outlet, the water inlet of the 4th interface F connection air conditioning terminal of the First Heat Exchanger 19, the 4th of second heat exchanger 13 the
Interface F connection first shut-off valve 18, the other end of first shut-off valve 18 connect the 4th of the First Heat Exchanger 19
Interface F.
First compressor refrigeration system and the second compressor refrigeration system are additionally provided with air injection enthalpy-increasing branch, the jet
Increasing enthalpy branch includes the second throttle part 4 (10) and the second shut-off valve 23 (11), the First Heat Exchanger 19, the second heat exchanger 13
Second interface B connect with second shut-off valve 23 (11), second shut-off valve 23 (11) and second throttle part 4
(10) it connects, second throttle part 4 (10) connect with the third interface C of the economizer 6 (12), the economizer 6
(12) the 4th interface D is connect with the compressor 1 (21).The air injection enthalpy-increasing branch for forming compressor 1 (21) in this way, passes through pressure
The combination of the evaporator branch and air injection enthalpy-increasing branch of contracting machine 1 (21), forms the circulation of compressor 1 (21) refrigeration system.
It further include having expansion drum 17, the 4th interface F connection expansion drum 17 of the First Heat Exchanger 19, the expansion
The other end of tank 17 connects the water inlet of the air conditioning terminal.
All the above throttle part is all made of expansion valve or throttle valve.
Speed heat combined supply system of the invention can realize separate refrigeration, independent heating, independent water heating, in water heating when system
It is cold, in water heating heating totally five operating modes:
1) separate refrigeration: as shown in Fig. 2, under separate refrigeration mode, the second shut-off valve 23 of air injection enthalpy-increasing branch road is closed
It closes, second water pump 14 of 15 roads of boiler is closed, and the first water pump 16 and the first shut-off valve 18 on air conditioning terminal circuit are beaten
It opens.
The circulation stream of two compressors is equal are as follows: the refrigerant of high temperature and pressure flows to four-way valve by compressor, then by four-way valve
Evaporator heat release cooling is flowed to, the refrigerant after cooling flows into economizer after throttle part throttles, and refrigerant is flowed to by economizer
Heat exchanger, the refrigerant of low-temp low-pressure reduces water temperature in heat exchanger in heat exchanger interior suction thermal evaporation, cold after heat exchanger heat absorption
Matchmaker flows to gas-liquid separator through four-way valve, then flows back to compressor by gas-liquid separator, completes the circulation of compressor refrigeration flow path.
The circulation of air conditioning terminal: under the drive of the first water pump 16, the hot water flowed back to from air conditioning terminal is by the first water pump
16 heat exchangers for flowing to low temperature carry out heat exchange, cooling of the hot water through heat exchanger, and the cold water that the hot water of high temperature changes into low temperature flows back to
Air conditioning terminal freezes.
By the cycle operation of above-mentioned each flow path, system completes the function of separate refrigeration, in two compressor tandem working moulds
Fast-refrigerating is realized under formula.
2) individually heating: as shown in figure 3, under independent heating mode, the second water pump 14 of boiler branch road is closed, empty
The first water pump 16 and the first shut-off valve 18 on the circuit of end is adjusted to open.
The circulation stream of two compressors is equal are as follows: the refrigerant of high temperature and pressure flows to four-way valve by compressor, then by four-way valve
Heat exchanger is flowed to, the heat release in heat exchanger of the refrigerant of high temperature cools down, and increases water temperature in heat exchanger, the refrigerant warp after heat release cooling
It crosses economizer and flows to first throttle component 5 or first throttle component 9 before evaporator, refrigerant flows to after throttle part throttles
Evaporator heat absorption evaporation, the refrigerant after heat absorption evaporation flow to gas-liquid separator through four-way valve, finally flow back to compressor, complete compression
The circulation of mechanism hot flowpath.
In a heating mode, when outdoor environment temperature is lower than certain value, the shut-off valve of air injection enthalpy-increasing branch road is opened, cold
Matchmaker is divided into two after heat exchanger cools down, and flows to evaporator heat absorption evaporation by economizer all the way, and another way increases by jet
Economizer heat absorption evaporation is flowed back to after the throttling of the shut-off valve and throttle part of enthalpy branch road, the refrigerant after heat absorption evaporation is through economizer
Compressor is flowed back to, realizes enthalpy-increasing function.
The circulation of air conditioning terminal: under the drive of the first water pump 16, the cold water flowed back to from air conditioning terminal is by the first water pump
16 heat exchangers for flowing to high temperature carry out heat exchange, heating of the cold water through heat exchanger, and the hot water that the cold water of low temperature changes into high temperature flows back to
Air conditioning terminal is heated.
By the cycle operation of above-mentioned each flow path, system completes the function of individually heating, in two compressor tandem working moulds
Quickly heating is realized under formula.
3) independent water heating: as shown in figure 4, under independent hot water model, the compressor of the first compressor refrigeration system
1, the first shut-off valve 18 and the first water pump 16 are closed, and the second water pump 14 is opened.
The circulation stream of the compressor 21 of second compressor refrigeration system are as follows: the refrigerant of high temperature and pressure is flowed to by compressor 21
Four-way valve 20, then flows to the second heat exchanger 13 by four-way valve 20, and the heat release in the second heat exchanger 13 of the refrigerant of high temperature cools down, makes
Water temperature increases in second heat exchanger 13, and the refrigerant after heat release cooling flows to the first throttle portion before evaporator 8 by economizer 12
Part 9, refrigerant flow to the heat absorption evaporation of evaporator 8 after the throttling of first throttle component 9, and the refrigerant after heat absorption evaporation is through four-way valve 20
Gas-liquid separator 7 is flowed to, compressor 21 is finally flowed back to, completes the circulation of compression mechanism hot flowpath.
Under hot water model, when outdoor environment temperature is lower than certain value, the second shut-off valve of air injection enthalpy-increasing branch road
11 open, and refrigerant is divided into two after the cooling of the second heat exchanger 13, flow to the heat absorption of evaporator 8 by economizer 12 all the way and steam
Hair, another way flow back to economizer 12 after the throttling of the second shut-off valve 11 of air injection enthalpy-increasing branch road and the second throttle part 10
Heat absorption evaporation, the refrigerant after heat absorption evaporation flow back to compressor 21 through economizer 12, realize enthalpy-increasing function.
Water heating flow path: under hot water model, the cold water of 15 the inside of boiler flows under the drive of the second water pump 14
Second heat exchanger 13 carries out heat exchange, and cold water becomes to flow back to boiler 15 by the second heat exchanger 13 after hot water, realizes water heating
Function.
By the cycle operation of above-mentioned each flow path, system realizes the function of independent water heating.
4) freeze when water heating: as shown in figure 5, the first shut-off valve 18 is closed, the second water in water heating under refrigeration mode
Pump 14 and the first water pump 16 are opened.
The circulation of 1 refrigeration circuit of compressor of first compressor refrigeration system: the refrigerant of high temperature and pressure is flowed to by compressor 1
Four-way valve 22 then flows to 3 heat release of evaporator cooling by four-way valve 22, and the refrigerant after cooling is after the throttling of first throttle component 5
Economizer 6 is flowed into, refrigerant flows to First Heat Exchanger 19 by economizer 6, and the refrigerant of low-temp low-pressure is in 19 interior suction of First Heat Exchanger
Thermal evaporation reduces water temperature in First Heat Exchanger 19, and the refrigerant after the heat absorption of First Heat Exchanger 19 flows to gas-liquid through four-way valve 22
Separator 2 then flows back to compressor 1 by gas-liquid separator 2, completes the circulation of 1 refrigeration circuit of compressor.
The circulation of air conditioning terminal: under the drive of the first water pump 16, the hot water flowed back to from air conditioning terminal is by the first water pump
16 First Heat Exchangers 19 for flowing to low temperature carry out heat exchange, and cooling of the hot water through First Heat Exchanger 19, the hot water of high temperature changes into low
The cold water of temperature flows back to air conditioning terminal and freezes.
By the cycle operation of above-mentioned each flow path, system completes refrigerating function when water heating under refrigeration mode.
The circulation stream of the compressor 21 of second compressor refrigeration system are as follows: the refrigerant of high temperature and pressure is flowed to by compressor 21
Four-way valve 20, then flows to the second heat exchanger 13 by four-way valve 20, and the heat release in the second heat exchanger 13 of the refrigerant of high temperature cools down, makes
Water temperature increases in second heat exchanger 13, and the refrigerant after heat release cooling flows to the first throttle portion before evaporator 8 by economizer 12
Part 9, refrigerant flow to the heat absorption evaporation of evaporator 8 after the throttling of first throttle component 9, and the refrigerant after heat absorption evaporation is through four-way valve 20
Gas-liquid separator 7 is flowed to, compressor 21 is finally flowed back to, completes the circulation that compressor 21 heats flow path.
Under hot water model, when outdoor environment temperature is lower than certain value, the second shut-off valve of air injection enthalpy-increasing branch road
11 open, and refrigerant is divided into two after the cooling of the second heat exchanger 13, flow to the heat absorption of evaporator 8 by economizer 12 all the way and steam
Hair, another way flow back to economizer 12 after the throttling of the second shut-off valve 11 of air injection enthalpy-increasing branch road and the second throttle part 10
Heat absorption evaporation, the refrigerant after heat absorption evaporation flow back to compressor 21 through economizer 12, realize enthalpy-increasing function.
Water heating flow path: under hot water model, the cold water of 15 the inside of boiler flows under the drive of the second water pump 14
Second heat exchanger 13 carries out heat exchange, and cold water becomes to flow back to boiler 15 by the second heat exchanger 13 after hot water, realizes water heating
The circulation of flow path.
By the cycle operation of above-mentioned each flow path, system completes water heating function when water heating under refrigeration mode.
In short, realizing water heating when system under two compressor parallel operating modes by the cycle operation of above each flow path
It is cold.
5) it is heated when water heating: as shown in fig. 6, in water heating under heating mode, the second water pump 14 and the first water pump 16
It opens.
The circulation stream of two compressors is equal are as follows: the refrigerant of high temperature and pressure flows to four-way valve by compressor, then by four-way valve
Heat exchanger is flowed to, the heat release in heat exchanger of the refrigerant of high temperature cools down, and increases water temperature in heat exchanger, the refrigerant warp after heat release cooling
It crosses economizer and flows to first throttle component 5 or first throttle component 9 before evaporator, refrigerant flows to after throttle part throttles
Evaporator heat absorption evaporation, the refrigerant after heat absorption evaporation flow to gas-liquid separator through four-way valve, finally flow back to compressor, complete compression
The circulation of mechanism hot flowpath.
In a heating mode, when outdoor environment temperature is lower than certain value, the shut-off valve of air injection enthalpy-increasing branch road is opened, cold
Matchmaker is divided into two after heat exchanger cools down, and flows to evaporator heat absorption evaporation by economizer all the way, and another way increases by jet
Economizer heat absorption evaporation is flowed back to after the throttling of the shut-off valve and throttle part of enthalpy branch road, the refrigerant after heat absorption evaporation is through economizer
Compressor is flowed back to, realizes enthalpy-increasing function.
The circulation of air conditioning terminal: under the drive of the first water pump 16, the cold water flowed back to from air conditioning terminal is by the first water pump
16 heat exchangers for flowing to high temperature carry out heat exchange, heating of the cold water through heat exchanger, and the hot water that the cold water of low temperature changes into high temperature flows back to
Air conditioning terminal is heated or is flowed back to boiler.
By the cycle operation of above-mentioned each flow path, two compressors are realized under parallel operation mode and are heated when water heating.
In this way, design of the system by above-mentioned relevant operation modes and circulation pattern, makes the speed heat trilogy supply scope of application
Wider, faster, function is more by heat transfer rate, and performance is more stable, and resource utilization is higher.
As described above, only presently preferred embodiments of the present invention, when cannot be limited the scope of implementation of the present invention with this,
All still belong to this hair according to simple equivalent changes and modifications made by scope of the present invention patent and invention description content generally
In the range of bright patent covers.