CN112129010B - Air energy hot water module machine - Google Patents

Air energy hot water module machine Download PDF

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Publication number
CN112129010B
CN112129010B CN202011007037.9A CN202011007037A CN112129010B CN 112129010 B CN112129010 B CN 112129010B CN 202011007037 A CN202011007037 A CN 202011007037A CN 112129010 B CN112129010 B CN 112129010B
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Prior art keywords
heat exchanger
water
port
valve
way valve
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CN202011007037.9A
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CN112129010A (en
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钟灼钧
钟宛桦
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Guangzhou Teshula New Energy Technology Co ltd
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Guangzhou Teshula New Energy Technology Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Air can hot water module machine includes: a heat exchanger; a refrigerant circulating part connected to a refrigerant circulating side of the heat exchanger; and a water circulation portion connected to the water circulation side of the heat exchanger; wherein the refrigerant cycle portion includes: the first expansion valve and the second expansion valve are respectively used for being connected with the indoor heat exchanger and the outdoor heat exchanger; the water circulation part comprises: a first throttle valve and a three-way valve; the inlet of the three-way valve is respectively connected with the water inlet end and the water return end of the tap water and is used for switching water inlet between the water inlet end and the water return end of the tap water; the inlet of the first throttle valve is connected with the outlet of the three-way valve, and the outlet of the first throttle valve is connected with the port C of the heat exchanger; the port A of the heat exchanger is used for being connected with a four-way valve, and the port D of the heat exchanger is used for being connected with a water tank. The invention can effectively save water resources and energy sources and realize the functional modes of refrigeration, hot water, refrigeration + hot water, defrosting and the like.

Description

Air energy hot water module machine
Technical Field
The invention relates to an air energy hot water module machine.
Background
At present, a hot water supply device on the market is generally only designed to heat a water tank or tap water, heated return water cannot be recycled, and the energy utilization rate is low. In addition, the air energy water heating system on the market has single function, and generally only has the water heating function.
Disclosure of Invention
According to an aspect of the present invention, there is provided an air-powered hot water module machine, including:
a heat exchanger;
a refrigerant circulating part connected to a refrigerant circulating side of the heat exchanger; and
a water circulation portion connected to a water circulation side of the heat exchanger;
wherein the refrigerant cycle portion includes: the first expansion valve and the second expansion valve are respectively used for being connected with the indoor heat exchanger and the outdoor heat exchanger;
the water circulation part comprises: a first throttle valve and a three-way valve; the inlet of the three-way valve is respectively connected with the water inlet end and the water return end of the tap water and is used for switching water inlet between the water inlet end and the water return end of the tap water; the inlet of the first throttle valve is connected with the outlet of the three-way valve, and the outlet of the first throttle valve is connected with the port C of the heat exchanger;
the port A of the heat exchanger is used for being connected with a four-way valve, and the port D of the heat exchanger is used for being connected with a water tank.
According to the air energy hot water module machine, the water circulation part is connected with the water return end through the three-way valve, water flow in the water return end is reheated, and water resources and energy resources can be effectively saved; the refrigerant circulating part can be matched with an external part for use through the arrangement of the first expansion valve and the second expansion valve, and multiple functional modes such as refrigeration, hot water, refrigeration + hot water, defrosting and the like are realized.
In some embodiments, the refrigerant cycle part further comprises a one-way valve, the port B of the heat exchanger is connected with the port a of the reservoir, the port B of the reservoir is connected with the inlet of the one-way valve, the outlet of the one-way valve is respectively connected with the port B of the first expansion valve and the port B of the second expansion valve, the port a of the first expansion valve is used for being connected with the indoor heat exchanger, and the port a of the second expansion valve is used for being connected with the outdoor heat exchanger.
In some embodiments, the refrigerant cycle further includes a third expansion valve, the port a of the accumulator is connected to the port B of the heat exchanger, the port B of the accumulator is connected to the port B of the third expansion valve, the port a of the third expansion valve is connected to the port B of the first expansion valve and the port B of the second expansion valve, respectively, the port a of the first expansion valve is used for being connected to the indoor heat exchanger, and the port a of the second expansion valve is used for being connected to the outdoor heat exchanger.
In some embodiments, the first throttle valve is an electric throttle valve.
In some embodiments, the first throttling valve is a condensing pressure valve for regulating the flow of water entering the heat exchanger for heating based on the discharge pressure of the compressor.
In some embodiments, the water circulation part further comprises a second throttle valve, an inlet of which is connected to an outlet of the three-way valve, and an outlet of which is connected to the water tank.
In some embodiments, the first throttling valve is a condensing pressure valve for regulating the flow of water entering the heat exchanger for heating based on the discharge pressure of the compressor; the water circulation part also comprises a third throttle valve, the inlet of the third throttle valve is connected with the outlet of the three-way valve, and the outlet of the third throttle valve is connected with the port C of the heat exchanger.
In some embodiments, the water circulation portion further includes a temperature sensor disposed between the three-way valve and the water return end, and the three-way valve is configured to switch to supply water from the water return end when a detected temperature of the temperature sensor is lower than a preset value.
Drawings
Fig. 1 is a cycle diagram of an air energy hot water system in a refrigeration mode according to a first embodiment of the present invention;
FIG. 2 is a detail view of the air energy hot water module machine of FIG. 1;
fig. 3 is a cycle diagram of an air energy hot water system in a hot water + cooling mode according to a first embodiment of the present invention;
FIG. 4 is a detail view of the air energy hot water module machine of FIG. 3;
fig. 5 is a circulation diagram of an air energy hot water system in a hot water mode according to a first embodiment of the present invention;
FIG. 6 is a detail view of the air energy hot water module machine of FIG. 5;
fig. 7 is a cycle diagram of the air energy hot water system in the heating mode according to the first embodiment of the present invention;
FIG. 8 is a detail view of the air energy hot water module machine of FIG. 7;
fig. 9 is a cycle diagram of an air energy hot water system in a defrosting mode according to a first embodiment of the present invention;
FIG. 10 is a detail view of the air energy hot water module machine of FIG. 9;
fig. 11 is a cycle diagram of the air energy hot water modular machine in the cooling mode according to the second embodiment of the invention;
fig. 12 is a circulation diagram of an air energy hot water module machine in a hot water + cooling mode according to a second embodiment of the present invention;
fig. 13 is a circulation diagram of an air energy hot water module machine in a hot water mode according to a second embodiment of the present invention;
fig. 14 is a cycle diagram of the air energy hot water modular machine in the heating mode according to the second embodiment of the invention;
fig. 15 is a cycle diagram of an air energy hot water system in a defrosting mode according to a second embodiment of the present invention;
FIG. 16 is a detail view of the air energy hot water module machine of FIG. 15;
fig. 17 is a cycle diagram of an air energy hot water module machine according to a modified embodiment of the second embodiment of the present invention in a defrosting mode.
Fig. 18 is a cycle diagram of an air energy hot water system in a cooling mode according to a third embodiment of the present invention;
FIG. 19 is a detail view of the air-powered hot water module of FIG. 18;
fig. 20 is a circulation diagram of an air energy hot water system in a hot water + cooling mode according to a third embodiment of the present invention;
FIG. 21 is a detail view of the air energy hot water module machine of FIG. 20;
fig. 22 is a circulation diagram of an air energy hot water system in a hot water mode according to a third embodiment of the present invention;
FIG. 23 is a detail view of the air energy hot water module machine of FIG. 22;
fig. 24 is a cycle diagram of an air energy hot water system in a defrosting mode according to a third embodiment of the present invention;
FIG. 25 is a detail view of the air energy hot water module machine of FIG. 24;
fig. 26 is a circulation diagram of an air energy hot water system in a hot water + cooling mode according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1-2 (wherein fig. 2 is a detailed view of the air-energy hot-water module machine 10 of fig. 1) schematically illustrate an air-energy hot-water system according to some embodiments of the present invention, including the air-energy hot-water module machine 10 and an external portion 20. Fig. 1 shows the whole of the air-energy water heating system, including an air-energy water heating module machine 10 and an external connection part 20, and fig. 2 shows the air-energy water heating module machine 10, and the same applies to other figures. The circumscribed portion 20 is for use with the air-powered hot water modular machine 10 of the present invention.
The air-energy hot-water module machine 10 includes a heat exchanger, a refrigerant circulating portion 30 connected to a refrigerant circulating side of the heat exchanger, and a water circulating portion 40 connected to a water circulating side of the heat exchanger. The refrigerant cycle portion 30 and the external portion 20 relate to an air energy refrigerant cycle for extracting heat from air, and the water cycle portion 40 provides a water source such that the water source obtains heat through a heat exchanger and realizes water outlet.
In this specification, the four ports of the four-way valve are respectively represented by D, E, S, C, and the specific connection mode of the four-way valve is not limited to the following mode as long as the related functions can be realized, and those skilled in the art can make certain changes to the specific connection mode. For convenience of description, two ports of the accumulator 12, the expansion valve, the indoor heat exchanger, and the outdoor heat exchanger are denoted by a and B, respectively, two ports of the refrigerant cycle side of the heat exchanger are denoted by a and B, respectively, and two ports of the water cycle side of the heat exchanger are denoted by C and D, respectively. In actual work, the ports can be exchanged as long as the related functions can be realized, and a person skilled in the art can change the specific connection mode to some extent.
Example one
A refrigerant circulating part 30 and an external part 20
Referring to fig. 1-2, the refrigerant cycle portion 30 includes a first expansion valve 1, a second expansion valve 2, an accumulator 12, and a check valve 4. The external connection part 20 includes an indoor heat exchanger, an outdoor heat exchanger, four-way valves including a first four-way valve 7 and a second four-way valve 8, a gas-liquid separator 11, and a compressor.
The indoor heat exchanger, the first expansion valve 1, the second expansion valve 2, the outdoor heat exchanger, the first four-way valve 7, the gas-liquid separator 11, the compressor, the second four-way valve 8, the heat exchanger, the liquid storage device 12 and the one-way valve 4 are sequentially connected, the one-way valve 4 is further connected with the first expansion valve 1 and the second expansion valve 2, and the first four-way valve 7 is respectively connected with the indoor heat exchanger and the second four-way valve 8.
Specifically, the first expansion valve 1 and the second expansion valve 2 are both two-way expansion valves. The port a of the outdoor heat exchanger is connected to the port a of the second expansion valve 2, and the port B thereof is connected to the port E of the first four-way valve 7. The port a of the indoor heat exchanger is connected to the port a of the first expansion valve 1, and the port B thereof is connected to the port C of the first four-way valve 7. The D port of the first four-way valve 7 is connected to the C port of the second four-way valve 8, and the S ports thereof are connected to the S port of the second four-way valve 8 and the inlet of the gas-liquid separator 11, respectively. The second four-way valve 8 has a port D connected to the outlet of the compressor and a port E connected to the port a of the heat exchanger. The port B of the heat exchanger is connected to the port a of the accumulator 12. The B port of the reservoir 12 is connected to the inlet of the check valve 4, and the outlet of the check valve 4 is connected between the B port of the first expansion valve 1 and the B port of the second expansion valve 2.
The air energy heat exchange performed by the refrigerant cycle portion 30 and the external portion 20 can provide five functional modes, and the operation thereof will be described separately below.
(1) Refrigeration mode
In this mode, the outdoor heat exchanger and the indoor heat exchanger are turned on to achieve refrigeration of the indoor environment, and the heat exchanger does not operate because hot water does not need to be prepared.
As shown in fig. 1-2, the refrigerant circulation path is that, after heat dissipation and condensation in the outdoor heat exchanger, the refrigerant is subjected to pressure reduction by the second expansion valve 2 and the first expansion valve 1 in sequence, then is subjected to heat absorption and evaporation in the indoor heat exchanger, then sequentially passes through the port C and the port S of the first four-way valve 7, enters the gas-liquid separator 11, then enters the compressor for pressurization, and then sequentially passes through the port D and the port C of the second four-way valve 8 and the port D and the port E of the first four-way valve 7 after pressurization, reenters the outdoor heat exchanger, and continues to circulate for the next time.
(2) Hot water + refrigeration mode
In this mode, indoor heat exchanger and heat exchanger open, and outdoor heat exchanger closes, absorbs the heat of indoor environment through indoor heat exchanger, releases the heat to the rivers of required heating through heat exchanger in, realizes the refrigeration of indoor environment and the heating of rivers simultaneously, can greatly the energy saving, realizes energy-concerving and environment-protective.
As shown in fig. 3-4, the refrigerant circulation path is such that the refrigerant is subjected to heat dissipation and condensation in the heat exchanger, passes through the reservoir 12 and the check valve 4, is reduced in pressure by the first expansion valve 1, is subjected to heat absorption and evaporation in the indoor heat exchanger, sequentially passes through the port C and the port S of the first four-way valve 7, enters the gas-liquid separator 11, enters the compressor for pressurization, sequentially passes through the port D and the port E of the second four-way valve 8 after pressurization, reenters the heat exchanger, and continues to circulate for the next time.
(3) Hot water mode
In the mode, the outdoor heat exchanger and the heat exchanger are opened, the indoor heat exchanger is closed, heat of outdoor environment is absorbed through the outdoor heat exchanger, the heat is released into water flow to be heated through the heat exchanger, and the water flow is heated under the condition that indoor temperature is not influenced.
As shown in fig. 5-6, the refrigerant circulation path is that, after absorbing heat and evaporating in the outdoor heat exchanger, the refrigerant sequentially passes through the port E and the port S of the first four-way valve 7, enters the gas-liquid separator 11, then enters the compressor for supercharging, then sequentially passes through the port D and the port E of the second four-way valve 8, then enters the heat exchanger for heat dissipation and condensation, then passes through the liquid reservoir 12 and the one-way valve 4, is depressurized by the second expansion valve 2, and enters the outdoor heat exchanger again after depressurization, and continues the next cycle.
(4) Heating mode
In this mode, the outdoor heat exchanger and the indoor heat exchanger are turned on, the heat exchanger is turned off, heat from the outdoor environment is absorbed by the outdoor heat exchanger, and heat is released to the indoor environment by the indoor heat exchanger.
As shown in fig. 7-8, the refrigerant circulation path is that, after absorbing heat and evaporating in the outdoor heat exchanger, the refrigerant sequentially passes through the port E and the port S of the first four-way valve 7, enters the gas-liquid separator 11, enters the compressor for supercharging, sequentially passes through the port D and the port C of the second four-way valve 8, and the port D and the port C of the first four-way valve 7, enters the indoor heat exchanger for heat dissipation and condensation, sequentially passes through the first expansion valve 1 and the second expansion valve 2 for depressurization, and re-enters the outdoor heat exchanger after depressurization, and continues to circulate for the next time.
(5) Defrost mode
In this mode, the outdoor heat exchanger and the indoor heat exchanger are opened to absorb heat of the indoor environment and release the heat to the outdoor heat exchanger, so that frost on the outdoor heat exchanger is melted.
As shown in fig. 9-10, the refrigerant circulation path is that, after heat dissipation and condensation in the outdoor heat exchanger, the refrigerant is subjected to pressure reduction by the second expansion valve 2 and the first expansion valve 1 in sequence, then is subjected to heat absorption and evaporation in the indoor heat exchanger, then sequentially passes through the port C and the port S of the first four-way valve 7, enters the gas-liquid separator 11, then enters the compressor for pressurization, and then sequentially passes through the port D and the port C of the second four-way valve 8 and the port D and the port E of the first four-way valve 7 after pressurization, reenters the outdoor heat exchanger, and continues to circulate for the next time.
In some embodiments, referring to fig. 2, the refrigerant cycle part 30 further includes a pressure gauge 5 for sensing a discharge pressure of the compressor, and a protection switch 6 for turning off the compressor when the discharge pressure of the compressor exceeds a preset value according to the discharge pressure of the compressor.
(II) Water circulating section 40
Referring to fig. 2, the water circulation portion 40 includes a three-way valve, a first throttle valve, and a second throttle valve. The inlet of the three-way valve is respectively connected with a tap water inlet end and a water return end of a room network pipe (such as a water network pipe of a room in a hotel), and the outlet of the three-way valve is connected with the inlet of the first throttling valve and used for communicating one of the water return end or the tap water inlet end with the inlet of the first throttling valve, so that water can be fed from the water return end or the tap water inlet end. In some embodiments, referring to fig. 4, a temperature sensor 10 is further disposed between the inlet and the return end of the three-way valve, the temperature sensor 10 is configured to detect a temperature of a water flow in the return end, and when the water flow temperature is lower than a preset value, the three-way valve is switched to a position where the return end is communicated with an outlet of the return end, so as to close the tap water inlet end and feed water from the return end, thereby reheating the return water flow.
The outlet of the first throttling valve is connected with the inlet of the heat exchanger, and the outlet of the heat exchanger is connected with the water outlet end. After the water at the water outlet end enters the water tank (the water tank is shown in fig. 4, and is not shown in other figures), the water is pressurized and conveyed to a room using water by the water pump. The first throttling valve is used for controlling the water inflow of the heat exchanger, the first throttling valve adopts a condensing pressure valve and is used for adjusting the water inflow according to the exhaust pressure of the compressor, and the opening degree of the valve is adjusted by sensing the pressure change of the refrigerant, so that enough water flow can pass through, and the improvement of the heat exchange efficiency and the constancy of the water outlet temperature are facilitated.
According to the invention, the inlet of the three-way valve can be switched to the water return end, the heat exchanger reheats the low-temperature water at the water return end, and the waste heat of the return water is recycled, so that the energy can be saved.
The inlet of the second throttle valve is connected to the outlet of the three-way valve, and the outlet of the second throttle valve is connected to the water outlet, so that the cold water that is not heated at the outlet of the three-way valve is supplied to the water tank (the water tank is shown in fig. 4, and is not shown in other figures) through the water outlet and mixed with the hot water in the water tank, thereby adjusting the temperature of the water in the water tank and enabling the water supplied to the room to reach a preset temperature.
In the prior art, a heat exchanger continuously circularly heats hot water in a water tank, and the heating efficiency is low due to the fact that the temperature of a water source entering the heat exchanger is high and the heat energy is not fully utilized.
Example two
A refrigerant circulating part 30 and an external part 20
Referring to fig. 1 and 11, the present embodiment is substantially the same as the first embodiment in that the refrigerant circulating section 30 further includes the third expansion valve 3, and the check valve 4 is not required, so that the operation efficiency can be further increased, and particularly, in the defrosting mode, the quick defrosting can be realized.
The refrigerant circulating section 30 includes a first expansion valve 1, a second expansion valve 2, a third expansion valve 3, and an accumulator 12. The external connection part 20 includes an outdoor heat exchanger, four-way valves including a first four-way valve 7 and a second four-way valve 8, a gas-liquid separator 11, and a compressor.
The indoor heat exchanger, the first expansion valve 1, the second expansion valve 2, the third expansion valve 3, the outdoor heat exchanger, the first four-way valve 7, the gas-liquid separator 11, the compressor, the second four-way valve 8, the heat exchanger and the liquid storage device 12 are sequentially connected, the liquid storage device 12 is connected with the third expansion valve 3, and the first four-way valve 7 is respectively connected with the indoor heat exchanger and the second four-way valve 8.
Specifically, the first expansion valve 1, the second expansion valve 2, and the third expansion valve 3 are all two-way expansion valves. The port a of the outdoor heat exchanger is connected to the port a of the second expansion valve 2, and the port B thereof is connected to the port E of the first four-way valve 7. The port a of the indoor heat exchanger is connected to the port a of the first expansion valve 1, and the port B thereof is connected to the port C of the first four-way valve 7. The D port of the first four-way valve 7 is connected to the C port of the second four-way valve 8, and the S ports thereof are connected to the S port of the second four-way valve 8 and the inlet of the gas-liquid separator 11, respectively. The second four-way valve 8 has a port D connected to the outlet of the compressor and a port E connected to the port a of the heat exchanger. The port B of the heat exchanger is connected to the port a of the accumulator 12. The port B of the reservoir 12 is connected to the port B of the third expansion valve 3, and the port a of the third expansion valve 3 is connected between the port B of the first expansion valve 1 and the port B of the second expansion valve 2.
The air energy heat exchange between the refrigerant cycle portion 30 and the external portion 20 can also provide five functional modes, and the operation of the five functional modes will be described separately below.
(1) Refrigeration mode
In this mode, the outdoor heat exchanger and the indoor heat exchanger are turned on to achieve refrigeration of the indoor environment, and the heat exchanger does not operate because hot water does not need to be prepared.
As shown in fig. 1 and 11 (the circulation path of fig. 1 is the same as that of the first embodiment), after heat dissipation and condensation are performed in the outdoor heat exchanger, the refrigerant passes through the second expansion valve 2 and the first expansion valve 1 in sequence to realize pressure reduction, then absorbs heat in the indoor heat exchanger to evaporate, then passes through the port C and the port S of the first four-way valve 7 in sequence, enters the gas-liquid separator 11, enters the compressor to perform pressure boosting, passes through the port D and the port C of the second four-way valve 8 in sequence and the port D and the port E of the first four-way valve 7 in sequence, reenters the outdoor heat exchanger, and continues the next circulation.
(2) Hot water + refrigeration mode
In this mode, indoor heat exchanger and heat exchanger open, and outdoor heat exchanger closes, absorbs the heat of indoor environment through indoor heat exchanger, releases the heat to the rivers of required heating through heat exchanger in, realizes the refrigeration of indoor environment and the heating of rivers simultaneously, can greatly the energy saving, realizes energy-concerving and environment-protective.
As shown in fig. 3 and 12 (the circulation path of fig. 3 is the same as that of the first embodiment), the refrigerant dissipates heat and condenses in the heat exchanger, passes through the liquid accumulator 12, passes through the third expansion valve 3 and the first expansion valve 1 in sequence to realize pressure reduction, then passes through the indoor heat exchanger to absorb heat and evaporate, passes through the port C and the port S of the first four-way valve 7 in sequence, enters the gas-liquid separator 11, enters the compressor to be pressurized, passes through the port D and the port E of the second four-way valve 8 in sequence after being pressurized, reenters the heat exchanger, and continues the next circulation.
(3) Hot water mode
In the mode, the outdoor heat exchanger and the heat exchanger are opened, the indoor heat exchanger is closed, heat of outdoor environment is absorbed through the outdoor heat exchanger, the heat is released into water flow to be heated through the heat exchanger, and the water flow is heated under the condition that indoor temperature is not influenced.
As shown in fig. 5 and 13 (the circulation path of fig. 5 is the same as that of the first embodiment), the refrigerant absorbs heat and evaporates in the outdoor heat exchanger, passes through the ports E and S of the first four-way valve 7 in sequence, enters the gas-liquid separator 11, enters the compressor for supercharging, passes through the ports D and E of the second four-way valve 8 in sequence, enters the heat exchanger for heat dissipation and condensation, passes through the liquid storage device 12, passes through the third expansion valve 3 and the second expansion valve 2 in sequence for depressurization, reenters the outdoor heat exchanger after depressurization, and continues the next circulation.
(4) Heating mode
In this mode, the outdoor heat exchanger and the indoor heat exchanger are turned on, the heat exchanger is turned off, heat from the outdoor environment is absorbed by the outdoor heat exchanger, and heat is released to the indoor environment by the indoor heat exchanger.
The refrigerant circulation path is as shown in fig. 7 and 14 (the part of the circulation path in fig. 7 is the same as that in the first embodiment), the refrigerant absorbs heat and evaporates in the outdoor heat exchanger, and then sequentially passes through the port E and the port S of the first four-way valve 7, enters the gas-liquid separator 11, enters the compressor for supercharging, sequentially passes through the port D and the port C of the second four-way valve 8, and the port D and the port C of the first four-way valve 7, enters the indoor heat exchanger for heat dissipation and condensation, and then sequentially passes through the first expansion valve 1 and the second expansion valve 2 for pressure reduction, and enters the outdoor heat exchanger again after pressure reduction, and continues the next circulation.
(5) Defrost mode
In this mode, the outdoor heat exchanger and the heat exchanger are turned on, and heat in water is absorbed and released to the outdoor heat exchanger, so that frost on the outdoor heat exchanger is melted. Unlike the defrosting mode in the first embodiment, in this embodiment, the heat of the water passing through the heat exchanger is absorbed instead of absorbing the heat of the air in the indoor environment to defrost the outdoor heat exchanger, and since the heat exchange speed of the water is several times higher than that of the air, the rapid defrosting can be realized.
As shown in fig. 15 to 16, the refrigerant circulation path is that, after heat dissipation and condensation in the outdoor heat exchanger, the refrigerant is subjected to pressure reduction by the second expansion valve 2 and the third expansion valve 3 in sequence, passes through the liquid reservoir 12 after pressure reduction, enters the heat exchanger to absorb heat and evaporate, then passes through the ports E and S of the second four-way valve 8 in sequence, enters the gas-liquid separator 11, enters the compressor to increase pressure, then passes through the ports D and C of the second four-way valve 8 and the ports D and E of the first four-way valve 7 in sequence, reenters the outdoor heat exchanger, and continues to circulate for the next time.
(II) Water circulating section 40
Referring to fig. 11, the water circulation portion 40 includes a three-way valve and a first throttle valve. The inlet of the three-way valve is respectively connected with a tap water inlet end and a water return end of a room network management (such as a water network management of a room in a hotel), the outlet of the three-way valve is connected with the inlet of the first throttling valve and used for switching between the water return end and the tap water inlet end, and one of the water return end or the tap water inlet end is communicated with the inlet of the first throttling valve, so that water can be fed from the water return end or the tap water inlet end. . In some embodiments, referring to fig. 12, a temperature sensor 10 is further disposed between the inlet and the return end of the three-way valve, the temperature sensor 10 is configured to detect a temperature of a water flow in the return end, and when the water flow temperature is lower than a preset value, the three-way valve is switched to a position where the return end is communicated with an outlet of the return end, so as to close the tap water inlet end and feed water from the return end, thereby reheating the return water flow.
The outlet of the first throttling valve is connected with the inlet of the heat exchanger, and the outlet of the heat exchanger is connected with the water outlet end. After the water at the water outlet end enters the water tank (the water tank is shown in fig. 12, and is not shown in other figures), the water is pressurized and conveyed to a room using water by the water pump. The first throttle valve is used for controlling the water inflow of the heat exchanger, and the first throttle valve is preferably an electric throttle valve. The temperature of the water outlet end can be directly adjusted by adjusting the opening of the electric throttle valve.
In the prior art, a heat exchanger continuously circularly heats hot water in a water tank, and the heating efficiency is low because the temperature of a water source entering the heat exchanger is high and the heat energy is not fully utilized.
In another embodiment, referring to fig. 17, in comparison with fig. 16, the first throttle valve employs a condensing pressure valve for adjusting the amount of water inflow according to the discharge pressure of the compressor, and adjusts the degree of opening of the valve by sensing the pressure change of the refrigerant so as to allow a sufficient amount of water to pass, which is more advantageous for the improvement of heat exchange efficiency and the constancy of the outlet water temperature. A third throttle is provided, the inlet of which is connected to the outlet of the three-way valve and the outlet of which is connected to the heat exchanger, and in the defrost mode, water can enter the heat exchanger through the third throttle instead of the first throttle.
EXAMPLE III
Compared with the first and second embodiments, the air energy hot water module machine 10 is the same as the first and second embodiments, the external connection part 20 is different, the structure is simpler, only one four-way valve 9 is arranged on the external connection part 20, the four-way valve is specifically the third four-way valve 9, the function is simplified, and the air energy hot water module machine does not have a heating function.
A refrigerant circulating part 30 and an external part 20
The refrigerant circulating section 30 includes a first expansion valve 1, a second expansion valve 2, an accumulator 12, and a check valve 4. The external connection part 20 includes an indoor heat exchanger, an outdoor heat exchanger, a third four-way valve 9, a gas-liquid separator 11, and a compressor.
The indoor heat exchanger, the first expansion valve 1, the second expansion valve 2, the outdoor heat exchanger, the third four-way valve 9, the gas-liquid separator 11, the compressor, the heat exchanger, the liquid storage device 12 and the one-way valve 4, wherein the one-way valve 4 is also connected with the first expansion valve 1 and the second expansion valve 2, and the compressor is also connected with the indoor heat exchanger.
Specifically, the first expansion valve 1 and the second expansion valve 2 are both two-way expansion valves. The port a of the outdoor heat exchanger is connected to the port a of the second expansion valve 2, and the port B thereof is connected to the port C of the third four-way valve 9. The port a of the indoor heat exchanger is connected to the port a of the first expansion valve 1, and the port B thereof is connected to the port S of the third four-way valve 9 and the inlet of the gas-liquid separator 11. The third four-way valve 9 has a port D connected to the outlet of the compressor and a port E connected to the port a of the heat exchanger. The port B of the heat exchanger is connected to the port a of the accumulator 12. The B port of the reservoir 12 is connected to the inlet of the check valve 4, and the outlet of the check valve 4 is connected between the B port of the first expansion valve 1 and the B port of the second expansion valve 2.
The air energy heat exchange performed by the refrigerant cycle part 30 and the external part 20 can provide four functional modes, and the operation thereof will be described below.
(1) Refrigeration mode
In this mode, the outdoor heat exchanger and the indoor heat exchanger are turned on to achieve refrigeration of the indoor environment, and the heat exchanger does not operate because hot water does not need to be prepared.
As shown in fig. 18 to 19, the refrigerant circulation path is configured such that, after heat dissipation and condensation in the outdoor heat exchanger, the refrigerant is subjected to pressure reduction by the second expansion valve 2 and the first expansion valve 1 in sequence, then is subjected to heat absorption and evaporation in the indoor heat exchanger, then enters the gas-liquid separator 11, then enters the compressor for pressurization, and after pressurization, passes through the D port and the C port of the third four-way valve 9 in sequence, reenters the outdoor heat exchanger, and continues to perform the next cycle.
(2) Hot water + refrigeration mode
In this mode, indoor heat exchanger and heat exchanger open, and outdoor heat exchanger closes, absorbs the heat of indoor environment through indoor heat exchanger, releases the heat to the rivers of required heating through heat exchanger in, realizes the refrigeration of indoor environment and the heating of rivers simultaneously, can greatly the energy saving, realizes energy-concerving and environment-protective.
As shown in fig. 20 to 21, in the refrigerant circulation path, after heat dissipation and condensation in the heat exchanger, the refrigerant passes through the accumulator 12, the check valve 4, the first expansion valve 1 to reduce the pressure, then the refrigerant absorbs heat and evaporates in the indoor heat exchanger, then the refrigerant enters the gas-liquid separator 11, enters the compressor to increase the pressure, passes through the D port and the E port of the third four-way valve 9 in sequence after the pressure is increased, and enters the heat exchanger again to continue the next cycle.
(3) Hot water mode
In the mode, the outdoor heat exchanger and the heat exchanger are opened, the indoor heat exchanger is closed, heat of outdoor environment is absorbed through the outdoor heat exchanger, the heat is released into water flow to be heated through the heat exchanger, and the water flow is heated under the condition that indoor temperature is not influenced.
As shown in fig. 22-23, the refrigerant circulation path is that, after absorbing heat and evaporating in the outdoor heat exchanger, the refrigerant sequentially passes through the port C and the port S of the third four-way valve 9, enters the gas-liquid separator 11, then enters the compressor for supercharging, then sequentially passes through the port D and the port E of the third four-way valve 9, then enters the heat exchanger for heat dissipation and condensation, then passes through the liquid reservoir 12 and the one-way valve 4, is depressurized by the second expansion valve 2, and enters the outdoor heat exchanger again after depressurization, and continues the next cycle.
(4) Defrost mode
In this mode, the outdoor heat exchanger and the indoor heat exchanger are opened to absorb heat of the indoor environment and release the heat to the outdoor heat exchanger, so that frost on the outdoor heat exchanger is melted.
As shown in fig. 24-25, the refrigerant circulation path is such that, after heat dissipation and condensation in the outdoor heat exchanger, the refrigerant passes through the second expansion valve 2 and the first expansion valve 1 in sequence to achieve pressure reduction, then absorbs heat and evaporates in the indoor heat exchanger, then enters the gas-liquid separator 11, then enters the compressor to be pressurized, and then passes through the D port and the C port of the third four-way valve 9 in sequence to reenter the outdoor heat exchanger to continue the next cycle.
In some embodiments, referring to fig. 19, the refrigerant cycle part 30 further includes a pressure gauge 5 for sensing a discharge pressure of the compressor, and a protection switch 6 for turning off the compressor when the discharge pressure of the compressor exceeds a preset value according to the discharge pressure of the compressor.
(II) Water circulating section 40
Referring to fig. 19, the water circulation portion 40 includes a three-way valve, a first throttle valve, and a second throttle valve. The inlet of the three-way valve is respectively connected with a tap water inlet end and a water return end of a room network pipe (such as a water network pipe of a room in a hotel), and the outlet of the three-way valve is connected with the inlet of the first throttling valve and used for communicating one of the water return end or the tap water inlet end with the inlet of the first throttling valve, so that water can be fed from the water return end or the tap water inlet end. In some embodiments, referring to fig. 21, a temperature sensor 10 is further disposed between the inlet and the return end of the three-way valve, the temperature sensor 10 is configured to detect a temperature of a water flow in the return end, and when the water flow temperature is lower than a preset value, the three-way valve is switched to a position where the return end is communicated with an outlet of the return end, so as to close the tap water inlet end and feed water from the return end, thereby reheating the return water flow.
The outlet of the first throttling valve is connected with the inlet of the heat exchanger, and the outlet of the heat exchanger is connected with the water outlet end. After the water at the water outlet end enters the water tank (the water tank is shown in fig. 21, and is not shown in other figures), the water is pressurized and conveyed to a room using water by the water pump. The first throttle valve is used for controlling the water inflow of the heat exchanger, and preferably adopts a condensing pressure valve for adjusting the water inflow according to the discharge pressure of the compressor, and the opening degree of the valve is adjusted by sensing the pressure change of the refrigerant, so that the sufficient water flow can pass through, and the improvement of the heat exchange efficiency and the constancy of the water outlet temperature are facilitated.
According to the invention, the inlet of the three-way valve can be switched to the water return end, the heat exchanger reheats the low-temperature water at the water return end, and the waste heat of the return water is recycled, so that the energy can be saved.
The inlet of the second throttle valve is connected to the outlet of the three-way valve, and the outlet of the second throttle valve is connected to the water outlet, so that the cold water that is not heated at the outlet of the three-way valve is supplied to the water tank (the water tank is shown in fig. 21, and is not shown in other figures) through the water outlet and mixed with the hot water in the water tank, thereby adjusting the temperature of the water in the water tank and enabling the water supplied to the room to reach a preset temperature.
In the prior art, a heat exchanger continuously circularly heats hot water in a water tank, and the heating efficiency is low due to the fact that the temperature of a water source entering the heat exchanger is high and the heat energy is not fully utilized.
Example four
This embodiment is substantially the same as the third embodiment, with the difference being that in the water circulation section 40.
Referring to fig. 26, the water circulation portion 40 includes a three-way valve and a first throttle valve. The inlet of the three-way valve is respectively connected with a tap water inlet end and a water return end of a room network management (such as a water network management of a room in a hotel), the outlet of the three-way valve is connected with the inlet of the first throttling valve and used for switching between the water return end and the tap water inlet end, and one of the water return end or the tap water inlet end is communicated with the inlet of the first throttling valve, so that water can be fed from the water return end or the tap water inlet end. In some embodiments, referring to fig. 26, a temperature sensor 10 is further disposed between the inlet and the return end of the three-way valve, the temperature sensor 10 is configured to detect the temperature of the water flow in the return end, and when the water flow temperature is lower than a preset value, the three-way valve is switched to a position where the return end is communicated with the outlet thereof, so as to close the tap water inlet end and feed water from the return end, thereby reheating the return water flow.
The outlet of the first throttling valve is connected with the inlet of the heat exchanger, and the outlet of the heat exchanger is connected with the water outlet end. After the water at the water outlet end enters the water tank (the water tank is shown in fig. 26, and is not shown in other figures), the water is pressurized and conveyed to a room using water by the water pump. The first throttle valve is used for controlling the water inflow of the heat exchanger, and the first throttle valve is preferably an electric throttle valve. The temperature of the water outlet end can be directly adjusted by adjusting the opening of the electric throttle valve.
In the prior art, a heat exchanger continuously circularly heats hot water in a water tank, and the heating efficiency is low because the temperature of a water source entering the heat exchanger is high and the heat energy is not fully utilized.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made, or combinations of the above-described embodiments can be made, without departing from the spirit of the invention, and all such changes and modifications, including combinations of features of the various embodiments described above, are within the scope of the invention.

Claims (8)

1. An air-powered hot water modular machine, comprising:
a heat exchanger;
a refrigerant cycle portion connected to a refrigerant cycle side of the heat exchanger; and
a water circulation portion connected to a water circulation side of the heat exchanger;
wherein the refrigerant cycle portion includes: the first expansion valve and the second expansion valve are respectively used for being connected with the indoor heat exchanger and the outdoor heat exchanger;
the water circulation section includes: a first throttle valve and a three-way valve; the inlet of the three-way valve is respectively connected with a tap water inlet end and a water return end and is used for switching water inlet between the tap water inlet end and the water return end; the inlet of the first throttling valve is connected with the outlet of the three-way valve, and the outlet of the first throttling valve is connected with the port C of the heat exchanger;
and the port A of the heat exchanger is connected with a four-way valve, and the port D of the heat exchanger is connected with a water tank.
2. The air energy hot water module machine according to claim 1, wherein the refrigerant circulating part further comprises a check valve, the port B of the heat exchanger is connected with the port a of the reservoir, the port B of the reservoir is connected with an inlet of the check valve, an outlet of the check valve is respectively connected with the port B of the first expansion valve and the port B of the second expansion valve, the port a of the first expansion valve is used for being connected with an indoor heat exchanger, and the port a of the second expansion valve is used for being connected with an outdoor heat exchanger.
3. The air-energy hot water module machine according to claim 1, wherein the refrigerant circulating section further comprises a third expansion valve, the port a of the accumulator is connected to the port B of the heat exchanger, the port B of the accumulator is connected to the port B of the third expansion valve, the port a of the third expansion valve is connected to the port B of the first expansion valve and the port B of the second expansion valve, respectively, the port a of the first expansion valve is used for being connected to an indoor heat exchanger, and the port a of the second expansion valve is used for being connected to an outdoor heat exchanger.
4. The air energy hot water module machine according to any one of claims 1 to 3, characterized in that the first throttle valve is an electric throttle valve.
5. The air energy hot water module machine of any one of claims 1 to 3, wherein the first throttle valve is a condensing pressure valve for regulating the flow of water entering the heat exchanger for heating based on the discharge pressure of the compressor.
6. The air-powered hot water module machine as claimed in claim 5, wherein the water circulating section further comprises a second throttle valve having an inlet connected to an outlet of the three-way valve and an outlet connected to a water tank.
7. The air energy hot water module machine of claim 3, wherein the first throttle valve is a condensing pressure valve for adjusting the flow of water entering the heat exchanger for heating based on the discharge pressure of the compressor; the water circulation part also comprises a third throttling valve, the inlet of the third throttling valve is connected with the outlet of the three-way valve, and the outlet of the third throttling valve is connected with the port C of the heat exchanger.
8. The air-powered hot water module machine as claimed in any one of claims 1 to 3, wherein the water circulation section further comprises a temperature sensor disposed between the three-way valve and a water return end, the three-way valve being configured to switch to intake of water from the water return end when a detected temperature of the temperature sensor is lower than a preset value.
CN202011007037.9A 2020-09-23 2020-09-23 Air energy hot water module machine Active CN112129010B (en)

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CN112484304B (en) * 2020-12-02 2022-07-26 广州特殊拉新能源科技有限公司 Air energy water heater
CN116202219A (en) * 2023-03-22 2023-06-02 广州特殊拉新能源科技有限公司 Air can hot water module machine

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CN103727703A (en) * 2013-12-24 2014-04-16 吴竺 Recycling combined cooling heating and power system
CN104075421A (en) * 2014-07-07 2014-10-01 余育钿 Hot-water device for air conditioner
CN209893676U (en) * 2019-03-28 2020-01-03 重菱股份有限公司 Air source heat pump trigeminy supplies unit system
CN111609552A (en) * 2020-04-23 2020-09-01 青岛海尔空调电子有限公司 Hot water unit

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Publication number Priority date Publication date Assignee Title
CN201163073Y (en) * 2007-12-18 2008-12-10 张晖 Heat pump type air conditioner apparatus with fast water-heating function
CN103727703A (en) * 2013-12-24 2014-04-16 吴竺 Recycling combined cooling heating and power system
CN104075421A (en) * 2014-07-07 2014-10-01 余育钿 Hot-water device for air conditioner
CN209893676U (en) * 2019-03-28 2020-01-03 重菱股份有限公司 Air source heat pump trigeminy supplies unit system
CN111609552A (en) * 2020-04-23 2020-09-01 青岛海尔空调电子有限公司 Hot water unit

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