CN109612156B - Assembled air conditioner wall comprising energy-saving heat pump system and operation method thereof - Google Patents

Assembled air conditioner wall comprising energy-saving heat pump system and operation method thereof Download PDF

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Publication number
CN109612156B
CN109612156B CN201811409503.9A CN201811409503A CN109612156B CN 109612156 B CN109612156 B CN 109612156B CN 201811409503 A CN201811409503 A CN 201811409503A CN 109612156 B CN109612156 B CN 109612156B
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heat exchanger
air
wall
outdoor
air duct
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CN109612156A (en
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何国青
赵文杰
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Zhejiang University ZJU
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Zhejiang University ZJU
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/02Heat pumps of the compression type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-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
    • F24F5/0003Exclusively-fluid systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/04Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14Collecting or removing condensed and defrost water; Drip trays

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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)
  • Other Air-Conditioning Systems (AREA)

Abstract

The invention discloses an energy-saving heat pump system, an assembled air conditioner wall comprising the system and an operation method thereof. The energy-saving heat pump system mainly comprises an indoor heat exchanger, a throttle valve, a condensate water tank, a four-way valve, a wall buried pipe, a compressor and an outdoor heat exchanger. In the summer refrigeration mode, a large amount of condensed water is accumulated in the condensed water tank, and when the refrigerant passes through the condensed water tank, the cooling capacity of the condensed water can be utilized for fully cooling. In winter, solar energy can be reasonably utilized through the wall buried pipe, and the heating effect of the energy-saving heat pump system is improved. The assembled air conditioner wall comprises an energy-saving heat pump system and a prefabricated wall body. Each component of the assembled air conditioner wall is produced in batches in a factory, the construction period can be reduced during installation, and each component of the assembled air conditioner wall can be produced in batches in the factory, so that the installation quality can be ensured.

Description

Assembled air conditioner wall comprising energy-saving heat pump system and operation method thereof
Technical Field
The invention belongs to the field of building equipment, and particularly relates to an assembled air conditioner wall comprising an energy-saving heat pump system and an operation method thereof.
Background
Air conditioning has become an important electrical device for regulating indoor environment in modern society, and along with economic development and social progress, people have not satisfied only control of indoor temperature and humidity, have begun to pursue air quality, and more families or offices have begun to install air conditioning and fresh air machines simultaneously.
The traditional split air conditioner is flexible in arrangement and installation, very flexible in use control and widely applied to office buildings and commercial buildings. But the air conditioner is not attractive, has low efficiency and does not have fresh air. For the centralized air conditioner, although the indoor decoration is improved, fresh air is easy to realize, the system arrangement is complex, the engineering installation period is long, and meanwhile, the control aspect is not convenient for the split air conditioner.
In addition, in most cases, the temperature of the condensed water of the air conditioner in summer is low, and simply discharging the condensed water outside is not good for the environment and beautiful, and energy waste is caused. In winter, the air source heat pump has lower heating capacity in low-temperature weather, and the temperature of the outer wall irradiated by sunlight is always higher than that of outdoor air, so that the reasonable use of the solar energy is beneficial to the improvement of the heating capacity of the system.
The development of buildings is moving towards assembly. The assembled building has short construction period, and the whole construction is prefabricated in a factory, so that the installation quality can be ensured. Therefore, the air conditioning equipment and the assembled wall body are organically combined, so that the building installation cost and the energy consumption can be reduced, the installation quality can be ensured, and the energy-saving efficiency of the equipment can be improved.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide an assembled air conditioner wall comprising an energy-saving heat pump system and an operation method thereof.
The specific technical scheme adopted by the invention is as follows:
an energy-saving heat pump system comprises a refrigerant circulation system and an air heat exchange air duct;
the refrigerant circulation system comprises an indoor heat exchanger, a throttle valve, a four-way valve, a compressor, a first three-way pipe, an outdoor heat exchanger, a first three-way valve, a second three-way pipe, a second three-way valve and a wall buried pipe;
the outlet of the compressor is connected with a first flow passage of the four-way valve; an inlet of the compressor is connected with a second flow passage opening of the four-way valve;
the third channel opening of the four-way valve is connected with the first channel opening of the first three-way valve; the second flow passage opening of the first three-way valve is connected with the first flow passage opening of the first three-way pipe; the second runner port of the first tee pipe is connected with one end of the outdoor heat exchanger; the other end of the outdoor heat exchanger is connected with a first flow passage opening of the second three-way pipe; the third pipeline opening of the second three-way pipe is connected with one end of the throttle valve; the other end of the throttle valve is connected with one end of the indoor heat exchanger; the other end of the indoor heat exchanger is connected with a fourth runner port of the four-way valve;
the third channel mouth of the first three-way valve is connected with one end of the wall buried pipe; the other end of the wall buried pipe is connected with a third channel opening of the second three-way valve; the second flow passage opening of the second three-way valve is connected with the second flow passage opening of the second three-way pipe;
the third channel opening of the first three-way pipe is connected with the first channel opening of the second three-way valve;
the air heat exchange air duct comprises a return air duct and an outdoor heat exchanger air duct;
the return air duct is used for realizing heat exchange between indoor air and the indoor heat exchanger; the air inlet and the air outlet of the return air duct are communicated with the indoor environment; the indoor heat exchanger is positioned in the return air duct, and a first fan for providing power is arranged in the return air duct;
the air duct of the outdoor heat exchanger is used for realizing heat exchange between outdoor air and the outdoor heat exchanger; the air inlet and the air outlet of the air duct of the outdoor heat exchanger are communicated with the outdoor environment; the outdoor heat exchanger is positioned in the air duct of the outdoor heat exchanger, and a third fan for providing power is arranged in the air duct of the outdoor heat exchanger.
The main purpose of adding the wall buried pipe is to utilize solar energy in winter to increase the temperature of the refrigerant before entering the compressor and increase COP, and then the cold energy stored in the wall can be selectively utilized in summer to reduce the temperature of the refrigerant before throttling and increase COP. The above-described connection is only one specific implementation for achieving this.
Further preferably, the first fan is positioned at the upwind position of the indoor heat exchanger in the return air duct; the third fan is positioned at the upwind position of the outdoor heat exchanger in the air duct of the outdoor heat exchanger.
Preferably, the energy-saving heat pump system further comprises a condensate water tank; the condensing water tank is used for receiving condensed water discharged by the indoor heat exchanger, is provided with a water outlet and is communicated with the outdoor environment; a refrigerant line connecting the outdoor heat exchanger and the throttle valve passes through the condensate water tank to utilize the cold energy of the condensate water in the condensate water tank. Thereby increasing the cooling effect of the heat pump.
Preferably, the energy-saving heat pump system further comprises a fresh air channel; the air inlet of the fresh air channel is communicated with outdoor air; the air outlet of the fresh air channel is connected with the return air channel and is used as the other air inlet of the return air channel; and the air outlet of the fresh air channel is provided with a fresh air valve to control the opening or closing of the fresh air channel; the fresh air valve is controlled by a motor; a second fan is arranged in the fresh air duct. The fresh air duct is mainly used for introducing outdoor fresh air according to the needs.
Further preferably, the air inlet of the fresh air duct faces downwards.
Further preferably, the second fan is located in the fresh air duct at the upwind position of the fresh air valve.
Preferably, the fresh air valve is made of heat-insulating and sound-insulating materials. It is further preferred that the motor and the carbon dioxide sensor are both connected to a control device.
Preferably, primary filters are arranged at the air outlet and the air inlet of the return air duct, the air outlet and the air inlet of the outdoor heat exchanger duct and the air inlet of the fresh air duct; and an efficient filter is further arranged at the air outlet of the return air duct and the air outlet of the fresh air duct. Further preferably, the high-efficiency filter at the outlet of the return air duct is positioned between the low-efficiency filter and the indoor heat exchanger; the high-efficiency filter of the fresh air duct outlet is positioned between the fresh air valve and the second fan. So as to prevent dust from entering each air duct and purify indoor air and outdoor air.
Preferably, the condensate water tank is made of plastic.
The invention also provides an assembled air conditioner wall comprising the energy-saving heat pump system, which comprises a prefabricated wall body; the energy-saving heat pump system is arranged in the prefabricated wall body;
the prefabricated wall body is provided with an inner heat preservation layer and an outer heat preservation layer; the inner heat preservation layer is positioned on one side, close to the inner wall surface, of the prefabricated wall body and is used for reducing heat exchange between the prefabricated wall body and the indoor environment; the outer heat insulation layer is positioned on one side of the prefabricated wall body close to the outer wall surface and is used for reducing heat exchange between the fresh air duct and the wall buried pipe;
the wall buried pipe is positioned in the prefabricated wall body and between the outer heat insulation layer and the outer wall surface; the return air duct is positioned between the inner heat insulation layer and the inner wall surface; the air inlet and the air outlet of the return air duct are positioned on the inner wall surface; the air inlet and the air outlet of the air duct of the outdoor heat exchanger are positioned on the outer wall surface; the main body of the fresh air duct is positioned between the inner heat preservation layer and the outer heat preservation layer; the air inlet of the fresh air duct is arranged on the outer wall surface, the side surface or the top surface of the window hole; and the condensed water in the condensed water tank is discharged to the outer wall surface.
The whole prefabricated air conditioner wall is prefabricated completely, and each component is simply combined and installed during installation.
Preferably, the throttle valve, the condensate water tank, the four-way valve, the compressor and the outdoor heat exchanger are all arranged in the integrated outdoor unit; an air inlet and an air outlet are arranged on the outdoor unit, so that an air channel of the outdoor heat exchanger passes through the outdoor unit; the outdoor unit is positioned in a preset embedded groove at the outer side of the prefabricated wall body, and a heat insulation material is arranged on the wall surface of the embedded groove. During manufacturing, a plurality of components are integrated in the outdoor unit, so that the installation process of the assembled air conditioner wall can be simplified. The heat insulation material is used for isolating heat generated by the outdoor unit or preventing heat loss of the prefabricated wall body.
Preferably, an overhaul hole is respectively arranged on the inner wall surface and the outer wall surface of the prefabricated wall body; the access opening is provided with a covering piece, and the access opening allows the primary filter and the high-efficiency filter to pass through. The design of access hole is in order to be convenient for later maintenance, in addition is convenient for change the filter.
The invention also provides an operation method of the assembled air conditioner wall, which comprises the following operation modes:
1) In the cooling mode, the heat pump system is in a cooling mode, the refrigerant circuit is as follows:
the refrigerant is compressed by a compressor; the refrigerant loop compressed by the compressor is cooled by wall buried pipes;
if the temperature of the refrigerant after being cooled by the wall buried pipe is lower than the outdoor temperature, the refrigerant loop bypasses the outdoor heat exchanger;
if the temperature of the refrigerant after being cooled by the wall buried pipe is higher than the outdoor temperature, the refrigerant loop is cooled by the outdoor heat exchanger for the second time;
after being cooled, the refrigerant passes through a condensing water tank to be further cooled, then enters an indoor heat exchanger through a throttle valve to expand and absorb heat, and finally returns to a compressor;
2) The heat pump system is in heating mode, the refrigerant circuit is as follows:
the refrigerant enters the indoor heat exchanger to release heat after being compressed by the compressor, and then passes through the throttle valve;
when the temperature of the prefabricated wall body is lower than the outdoor temperature, the refrigerant passing through the throttle valve is cooled only through the outdoor heat exchanger;
when the temperature of the prefabricated wall body is higher than the outdoor temperature, the refrigerant passing through the throttle valve absorbs heat for the second time through the outdoor heat exchanger and the wall buried pipe;
the refrigerant absorbs heat and finally returns to the compressor.
Compared with the prior art, the invention has the following beneficial effects:
in the energy-saving heat pump system, the refrigerant loop can pass through the condensing water tank, so that the refrigerant can be sufficiently cooled by condensed water with lower temperature in summer, the refrigerating effect of the air conditioner is improved, and the energy utilization rate is improved. In winter, the wall body is irradiated by sunlight, the temperature of the outer wall surface of the wall body is always higher than that of outdoor air, and the solar energy can be reasonably utilized through the wall buried pipe, so that the heating effect of the air conditioner is improved. In addition, the assembled air conditioning wall comprising the energy-saving heat pump system can reduce the construction period. And each assembly of the whole wall body can be produced in batch in factories, so that the installation quality can be ensured. The organic combination of air conditioning equipment with the fabricated wall also reduces building installation costs and energy consumption.
Drawings
FIG. 1 is a schematic diagram of a condensing agent circuit of example 1;
fig. 2 is a schematic structural view of an assembled air conditioning wall of embodiment 2;
fig. 3 is a schematic diagram of a refrigerant circuit in the cooling mode of embodiment 2;
fig. 4 is a schematic diagram of a refrigerant circuit in the heating mode of embodiment 2;
fig. 5 is a schematic structural view of a condensate tank of embodiment 2;
fig. 6 is a schematic diagram of an electric fresh air valve in embodiment 2.
In the figure: 1-first primary filter, 2-first high-efficiency filter, 3-indoor heat exchanger, 4-first fan, 5-second primary filter, 6-fresh air valve, 7-motor, 8-second high-efficiency filter, 9-second fan, 10-throttle valve, 11-condensate tank, 12-four-way valve, 13-compressor, 14-third fan, 15-first three-way pipe, 16-outdoor heat exchanger, 17-first three-way valve, 18-second three-way pipe, 19-third primary filter, 20-second three-way valve, 21-wall buried pipe, 22-fourth primary filter, 23-inner heat preservation layer, 24-outer heat preservation layer.
Detailed Description
The invention is further illustrated and described below with reference to the drawings and detailed description.
Embodiment 1 is a simple implementation of the present invention, which provides an energy-saving heat pump system, including a refrigerant circulation system and an air heat exchange air duct.
The refrigerant circulation system comprises an indoor heat exchanger 3, a throttle valve 10, a four-way valve 12, a compressor 13, a first three-way pipe 15, an outdoor heat exchanger 16, a first three-way valve 17, a second three-way pipe 18, a second three-way valve 20 and a wall buried pipe 21, and the connection relationship in the refrigerant circulation system is realized through a refrigerant pipeline. The pipeline connection mode is actually provided with a plurality of different connection methods, and the parts of the pipeline connection mode can be replaced according to actual conditions, for example, one four-way valve can be replaced by a plurality of two-way valves, and the like.
As shown in fig. 1, the refrigerant circuit of the apparatus of example 1 is shown. The four-way valve 12 is changed to change the circulation direction of the refrigerant, so that the switching of the refrigerating and heating functions is realized.
The specific connection relation is as follows: the outlet of the compressor 13 is connected with a first flow port of the four-way valve 12; an inlet of the compressor 13 is connected with a second flow passage opening of the four-way valve 12; the third flow passage opening of the four-way valve 12 is connected with the first flow passage opening of the first three-way valve 17; the second flow port of the first three-way valve 17 is connected with the first flow port of the first three-way pipe 15; the second runner port of the first tee 15 is connected with one end of the outdoor heat exchanger 16; the other end of the outdoor heat exchanger 16 is connected with a first flow passage opening of a second three-way pipe 18; the third channel mouth of the second tee 18 is connected with one end of the throttle valve 10; the other end of the throttle valve 10 is connected with one end of the indoor heat exchanger 3; the other end of the indoor heat exchanger 3 is connected with a fourth runner port of the four-way valve 12; the third channel mouth of the first three-way valve 17 is connected with one end of the wall buried pipe 21; the other end of the wall buried pipe 21 is connected with a third channel opening of the second three-way valve 20; the second flow port of the second three-way valve 20 is connected with the second flow port of the second three-way pipe 18; the third flow port of the first tee 15 is connected to the first flow port of the second tee 20. The wall buried pipe 21 can adopt a heat exchange pipe to recover heat in the wall body.
The air heat exchange air duct is used for heat exchange between the heat pump system and indoor air or outdoor air and comprises a return air duct and an outdoor heat exchanger duct. The return air duct is used for realizing heat exchange between the indoor air and the indoor heat exchanger 3. The air inlet and the air outlet of the return air duct are communicated with the indoor environment. The indoor heat exchanger 3 is located in the return air duct, and a first fan 4 is arranged in the return air duct and used for providing power to increase air flow in the return air duct so as to increase heat exchange efficiency. The outdoor heat exchanger air duct is used to realize heat exchange between the outdoor air and the outdoor heat exchanger 16. The air inlet and the air outlet of the air duct of the outdoor heat exchanger are communicated with the outdoor environment. The outdoor heat exchanger 16 is located in the outdoor heat exchanger air duct, and a third fan is built in the outdoor heat exchanger air duct for providing power to increase the air flow in the outdoor heat exchanger air duct to increase the heat exchange efficiency. The first fan 4 is positioned in the return air duct at the upwind position of the indoor heat exchanger 3. The third fan 14 is located upwind of the outdoor heat exchanger 16 in the outdoor heat exchanger air duct.
Example 2 is a further modification of example 1. Embodiment 2 is an assembled air conditioning wall comprising an energy efficient heat pump system, comprising a prefabricated wall. The energy-saving heat pump system is arranged in the prefabricated wall body, and the condensing water tank 11 and the fresh air channel are further added in the energy-saving heat pump system. The components of the assembled air conditioner wall are produced in batch in a unified manner in a factory, and the components are assembled on site. In addition, the assembled air conditioner wall can reduce the construction period. And each assembly of the whole prefabricated wall body can be produced in batch in a factory, and the installation quality can be ensured. The organic combination of air conditioning equipment and prefabricated wall body can also reduce the construction installation cost and energy consumption.
As shown in fig. 2, the specific connection manner of embodiment 2 is shown. The connection relationship among the indoor heat exchanger 3, the throttle valve 10, the four-way valve 12, the compressor 13, the first three-way pipe 15, the outdoor heat exchanger 16, the first three-way valve 17, the second three-way pipe 18, the second three-way valve 20 and the wall buried pipe 21 is similar to that of the embodiment 1, so that the description will not be given one by one. Here, a connection relation of the condensate tank 11, a method of changing the fresh air duct and the refrigerant circuit thereof will be mainly described in detail.
The prefabricated wall body is provided with an inner insulation layer 23 and an outer insulation layer 24. The inner heat preservation layer 23 is positioned on the side, close to the inner wall surface, of the prefabricated wall body and is used for reducing heat exchange between the prefabricated wall body and the indoor environment. The outer insulating layer 24 is located on the side of the prefabricated wall body close to the outer wall surface, and is used for reducing heat exchange between the prefabricated wall body and the outdoor environment. The double-layer heat-insulating layer can reduce heat exchange between indoor environment and outdoor environment under natural condition to prevent indoor overheat in summer or indoor supercooling in winter.
The wall buried pipe 21 is located in the prefabricated wall body and between the outer insulation layer 24 and the outer wall surface. The return air duct is positioned between the inner heat insulation layer 23 and the inner wall surface. The air inlet and the air outlet of the return air duct are positioned on the inner wall surface. The air inlet and the air outlet of the air duct of the outdoor heat exchanger are all positioned on the outer wall surface.
In embodiment 2, the condensate water tank 11 is used for receiving condensate water discharged from the indoor heat exchanger 3, and the condensate water tank 11 is provided with a water outlet and is communicated with the outdoor environment, a final condensate water discharge port of the condensate water tank 11 is arranged on an outer wall surface, condensate water flows to the wall surface outside the wall buried pipe, the temperature of the outer wall can be reduced through evaporation, and the heat exchange rate of the outer wall and air is enhanced. As shown in fig. 5, a refrigerant line connecting the outdoor heat exchanger 16 and the throttle valve 10 passes through the condensate water tank 11 to utilize the cold of the condensate water in the condensate water tank, thereby increasing the cooling effect of the heat pump. The joint is waterproof and sealed to prevent condensate from entering the condensate water tank 11 or condensate water in the condensate water tank 11 from flowing out of the joint. Of course, two different paths can be set, and the condensed water tank can be omitted in winter. In this embodiment, the condensation water tank 11 is made of plastic, and other materials with good heat preservation effect can be used instead. Compared with metal materials, the plastic material has lower heat conduction performance and can prevent the dissipation of condensation water cooling capacity.
Embodiment 2 is provided with a fresh air duct, which is mainly used for increasing indoor air circulation to improve indoor air quality. The main body of the fresh air duct is positioned between the inner heat preservation layer 23 and the outer heat preservation layer 24. The air intake in new trend wind channel locates outer wall, window hole side or window hole top surface, with outdoor air intercommunication, if locate outer wall, the air intake in new trend wind channel can select down to reduce the rainwater and flow backward. The air outlet of the fresh air channel is connected with the return air channel and is used as the other air inlet of the return air channel, and the air outlet of the fresh air channel is provided with a fresh air valve 6 for controlling the opening or closing of the fresh air channel. In addition, the fresh air valve 6 is made of heat-insulating and sound-insulating materials, so that the heat-insulating layer is continuous and sound-insulating and noise-preventing. The fresh air valve 6 is controlled by a motor 7 as shown in fig. 6. A second fan 9 is also arranged in the fresh air duct, and the second fan 9 is positioned at the upwind position of the fresh air valve. Further, in this embodiment, the motor 7 and the carbon dioxide sensor are connected to a control device to constitute feedback control, and the carbon dioxide sensor is used to detect the indoor carbon dioxide concentration, as required. When the indoor carbon dioxide concentration exceeds the preset threshold, the fresh air valve 6 is opened.
In embodiment 2, the fabricated air conditioning wall can automatically select the corresponding refrigerant circuit according to the temperature of the prefabricated wall and the heat exchanging effect of the wall embedded pipe 21, so as to save more energy and increase the working efficiency thereof. After the condensation water tank 11 is added, in summer, the refrigerant can be fully cooled by using condensate water with lower temperature, so that the refrigerating effect of the air conditioner is improved, the energy utilization rate is improved, the condensate water is discharged to the outer wall elevation of the wall buried pipe, the outer wall temperature is reduced by evaporation, and the heat exchange rate of the outer wall and air is enhanced. In addition, in summer, the cold energy stored in the wall body can be selectively utilized, the temperature of the refrigerant before throttling is reduced, and the COP is increased; in winter, the prefabricated wall body is irradiated by sunlight, the temperature of the outer wall surface of the prefabricated wall body is always higher than that of outdoor air, and the solar energy can be reasonably utilized through the wall buried pipe, so that the heating effect of the air conditioner is improved.
However, the refrigerant circuit designs that can achieve the above function are numerous and thus it is not possible to exhaust all the designs that can achieve the function. So that only one specific implementation will be described in detail in this disclosure, it should be understood that all schemes that can achieve the same function through common substitution fall within the protection scope of this disclosure.
In addition, in embodiment 2, a plurality of filters are provided to prevent dust from entering each duct, and to clean indoor air and outdoor air. The air outlet and the air inlet of the return air duct, the air outlet and the air inlet of the outdoor heat exchanger duct and the air inlet of the fresh air duct are respectively provided with a first primary filter 1, a second primary filter 5, a third primary filter 19 and a fourth primary filter 22. The air outlet of the return air duct and the air outlet of the fresh air duct are respectively provided with a first high-efficiency filter 2 and a second high-efficiency filter 8. The first high-efficiency filter 2 at the outlet of the return air duct is positioned between the first primary filter 1 and the indoor heat exchanger 3; the second high-efficiency filter 8 at the outlet of the fresh air duct is positioned between the fresh air valve 6 and the second fan 9. Of course, the types of these filters may be replaced or the number may be increased at different locations in the duct, as desired.
In embodiment 2, the throttle valve 10, the condensate tank 11, the four-way valve 12, the compressor 13, and the outdoor heat exchanger 16 are integrated into an integrated outdoor unit. An air inlet and an air outlet are arranged on the outdoor unit, so that the air channel of the outdoor heat exchanger passes through the outdoor unit. When the air conditioner is manufactured, the components are integrated in the outdoor unit, and only the outdoor unit is required to be installed, so that the installation process of the assembled air conditioner wall can be simplified. In addition, the outdoor unit is located in a preset embedded groove on the outer side of the prefabricated wall body, and a heat insulation material is arranged in the embedded groove. The heat insulation device is used for isolating heat generated by the outdoor unit or preventing heat loss of the prefabricated wall body.
An inner wall surface and an outer wall surface of the prefabricated wall body are respectively provided with an overhaul hole; the access opening is provided with a covering piece, and the access opening allows the primary filter and the high-efficiency filter to pass through. The design of access hole is in order to be convenient for later maintenance, in addition is convenient for change the filter.
In embodiment 2, the operation method of the fabricated air conditioning wall is mainly divided into a cooling mode and a heating mode. The main difference is that the flowing directions of the refrigerants are completely opposite, and various refrigerant circuits can be controllably adjusted and selected according to the temperature of the prefabricated wall.
1) As shown in fig. 3, wherein the first flow port of the four-way valve 12 is in communication with the third flow port and the second flow port of the four-way valve 12 is in communication with the fourth flow port when the air conditioner is in the cooling mode. The refrigerant is compressed by the compressor 13 and then enters the first three-way valve 17. At this time, the second flow passage of the first three-way valve 17 is closed, and the refrigerant is cooled down through the wall-buried pipe 21.
If the temperature of the refrigerant is lower than the outdoor temperature after the refrigerant is cooled by the wall buried pipe 21, the first flow port of the second three-way valve 20 is closed, and the refrigerant is directly returned to the compressor 13 through the condensate water tank 11, the throttle valve 10 and the indoor heat exchanger 3 in sequence.
If the temperature of the refrigerant is higher than the outdoor temperature after the refrigerant is cooled by the wall-buried pipe 21, the second flow passage of the second three-way valve 20 is closed, and the refrigerant returns to the compressor 13 through the outdoor heat exchanger 16, the condensate water tank 11, the throttle valve 10, and the indoor heat exchanger 3 in this order.
2) As shown in fig. 4, when the heat pump system is in the heating mode, the first flow passage port and the second flow passage port of the four-way valve 12 are connected, and the third flow passage port and the fourth flow passage port of the four-way valve 12 are connected. The refrigerant is compressed by a compressor and then sequentially enters the indoor heat exchanger 3, the throttle valve 10 and the condensate water tank 11;
if the temperature of the prefabricated wall is lower than the outdoor temperature, the three flow passages of the second three-way valve 20 are all closed, and the refrigerant is directly returned to the compressor 13 through the outdoor heat exchanger 16.
If the temperature of the prefabricated wall body is higher than the outdoor temperature, the second flow passage opening of the second three-way valve 20 and the second flow passage opening of the first three-way valve 17 are closed, and the refrigerant returns to the compressor 13 through the outdoor heat exchanger 16 and the wall buried pipe 21.
In addition, the assembled air conditioning wall in embodiment 2 can also be actually needed to control the fresh air channel. When fresh air is needed indoors, the motor 7 controls the fresh air valve 6 to be opened, the second fan 9 is started, and fresh air is introduced outdoors; when no fresh air is needed indoors, the motor 7 controls the fresh air valve 6 to be closed, and the second fan 9 stops rotating to perform indoor circulation.

Claims (7)

1. An assembled air conditioning wall comprising an energy-efficient heat pump system, comprising a prefabricated wall; the energy-saving heat pump system is arranged in the prefabricated wall body;
the energy-saving heat pump system comprises a refrigerant circulation system and an air heat exchange air duct; the refrigerant circulation system comprises an indoor heat exchanger (3), a throttle valve (10), a four-way valve (12), a compressor (13), a first three-way pipe (15), an outdoor heat exchanger (16), a first three-way valve (17), a second three-way pipe (18), a second three-way valve (20) and a wall buried pipe (21);
the outlet of the compressor (13) is connected with a first flow passage of the four-way valve (12); an inlet of the compressor (13) is connected with a second channel opening of the four-way valve (12);
the third channel opening of the four-way valve (12) is connected with the first channel opening of the first three-way valve (17); the second flow passage opening of the first three-way valve (17) is connected with the first flow passage opening of the first three-way pipe (15); the second runner port of the first tee pipe (15) is connected with one end of an outdoor heat exchanger (16); the other end of the outdoor heat exchanger (16) is connected with a first flow passage opening of a second three-way pipe (18); the third flow passage opening of the second tee pipe (18) is connected with one end of the throttle valve (10); the other end of the throttle valve (10) is connected with one end of the indoor heat exchanger (3); the other end of the indoor heat exchanger (3) is connected with a fourth runner port of the four-way valve (12);
the third channel opening of the first three-way valve (17) is connected with one end of a wall buried pipe (21); the other end of the wall buried pipe (21) is connected with a third channel opening of the second three-way valve (20); the second flow passage opening of the second three-way valve (20) is connected with the second flow passage opening of the second three-way pipe (18);
the third channel opening of the first three-way pipe (15) is connected with the first channel opening of the second three-way valve (20);
the air heat exchange air duct comprises a return air duct and an outdoor heat exchanger air duct;
the return air duct is used for realizing heat exchange between indoor air and the indoor heat exchanger (3); the air inlet and the air outlet of the return air duct are communicated with the indoor environment; the indoor heat exchanger (3) is positioned in the return air duct, and a first fan (4) for providing power is arranged in the return air duct;
the outdoor heat exchanger air channel is used for realizing heat exchange between outdoor air and the outdoor heat exchanger (16); the air inlet and the air outlet of the air duct of the outdoor heat exchanger are communicated with the outdoor environment; the outdoor heat exchanger (16) is positioned in an outdoor heat exchanger air duct, and a third fan (14) for providing power is arranged in the outdoor heat exchanger air duct;
the energy-saving heat pump system also comprises a condensate water tank (11); the condensing water tank (11) is used for receiving condensed water discharged by the indoor heat exchanger (3), and the condensing water tank (11) is provided with a water outlet and is communicated with the outdoor environment; a refrigerant pipeline connecting the outdoor heat exchanger (16) and the throttle valve (10) passes through the condensate water tank (11) to utilize the cold energy of condensate water in the condensate water tank;
the energy-saving heat pump system also comprises a fresh air duct; the air inlet of the fresh air channel is communicated with outdoor air; the air outlet of the fresh air channel is connected with the return air channel and is used as the other air inlet of the return air channel; and the air outlet of the fresh air channel is provided with a fresh air valve (6) for controlling the opening or closing of the fresh air channel; the fresh air valve (6) is controlled by a motor (7); a second fan (9) is arranged in the fresh air duct;
the prefabricated wall body is provided with an inner heat preservation layer (23) and an outer heat preservation layer (24); the inner heat preservation layer (23) is positioned on one side, close to the inner wall surface, of the prefabricated wall body and is used for reducing heat exchange between the prefabricated wall body and the indoor environment; the outer heat insulation layer (24) is positioned on one side, close to the outer wall surface, of the prefabricated wall body and is used for reducing heat exchange between the fresh air duct and the outer wall surface of the wall-containing buried pipe;
the wall buried pipe (21) is positioned in the prefabricated wall body and between the outer heat insulation layer (24) and the outer wall surface; the return air duct is positioned between the inner heat insulation layer (23) and the inner wall surface; the air inlet and the air outlet of the return air duct are positioned on the inner wall surface; the air inlet and the air outlet of the air duct of the outdoor heat exchanger are positioned on the outer wall surface; the main body of the fresh air duct is positioned between the inner heat insulation layer (23) and the outer heat insulation layer (24); the air inlet of the fresh air duct is arranged on the outer wall surface, the side surface or the top surface of the window hole; the condensed water in the condensed water tank (11) is discharged to the outer wall surface.
2. The wall of an assembled air conditioner comprising an energy efficient heat pump system according to claim 1, wherein the fresh air valve (6) is made of a heat and sound insulating material.
3. The assembled air conditioning wall comprising the energy-saving heat pump system according to claim 1, wherein primary filters are arranged at the air outlet and the air inlet of the return air duct, the air outlet and the air inlet of the outdoor heat exchanger duct and the air inlet of the fresh air duct; and an efficient filter is further arranged at the air outlet of the return air duct and the air outlet of the fresh air duct.
4. The wall of an assembled air conditioner comprising an energy efficient heat pump system according to claim 1, wherein the condensate tank (11) is of plastic material.
5. The wall of claim 1, wherein the throttle valve (10), the condensate tank (11), the four-way valve (12), the compressor (13) and the outdoor heat exchanger (16) are all disposed in an integrated outdoor unit; an air inlet and an air outlet are arranged on the outdoor unit, so that an air channel of the outdoor heat exchanger passes through the outdoor unit; the outdoor unit is positioned in a preset embedded groove at the outer side of the prefabricated wall body, and a heat insulation material is arranged on the wall surface of the embedded groove.
6. The assembled air conditioning wall comprising the energy-saving heat pump system according to claim 1, wherein an access hole is respectively arranged on the inner wall surface and the outer wall surface of the prefabricated wall body; the access opening is provided with a covering piece, and the access opening allows the primary filter and the high-efficiency filter to pass through.
7. An operation mode of an assembled air conditioning wall including an energy saving heat pump system according to claim 1, comprising the operation modes of:
1) In the cooling mode, the heat pump system is in a cooling mode, the refrigerant circuit is as follows:
the refrigerant is compressed by a compressor (13); the refrigerant loop compressed by the compressor (13) is cooled by the wall buried pipe (21);
if the temperature of the refrigerant after being cooled by the wall buried pipe (21) is lower than the outdoor temperature, the refrigerant loop bypasses the outdoor heat exchanger (16);
if the temperature of the refrigerant after being cooled by the wall buried pipe (21) is higher than the outdoor temperature, the refrigerant loop is cooled by the outdoor heat exchanger (16) for the second time;
after being cooled, the refrigerant passes through a condensing water tank (11) for further cooling, enters an indoor heat exchanger (3) through a throttle valve (10) for expansion and heat absorption, and finally returns to a compressor (13);
2) The heat pump system is in heating mode, the refrigerant circuit is as follows:
the refrigerant enters the indoor heat exchanger (3) to release heat after being compressed by the compressor (13); then the temperature is reduced by expansion of a throttle valve (10);
when the temperature of the prefabricated wall body is lower than the outdoor temperature, the refrigerant passing through the throttle valve (10) absorbs heat only through the outdoor heat exchanger (16);
when the temperature of the prefabricated wall body is higher than the outdoor temperature, the refrigerant passing through the throttle valve (10) absorbs heat for the second time through the outdoor heat exchanger (16) and the wall buried pipe (21);
the refrigerant absorbs heat and finally returns to the compressor (13).
CN201811409503.9A 2018-11-23 2018-11-23 Assembled air conditioner wall comprising energy-saving heat pump system and operation method thereof Active CN109612156B (en)

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KR20030036302A (en) * 2003-02-26 2003-05-09 엘지전자 주식회사 Built-in type outdoor unit for air-conditioner
CN202267148U (en) * 2011-09-19 2012-06-06 江峰松 Recessed type integral air conditioner
CN203099983U (en) * 2013-01-25 2013-07-31 长沙鹞翔科技有限公司 Complete set equipment formed by combining solar energy heat source wall and heat pump
CN104729139B (en) * 2015-03-24 2017-11-14 贺洪 The method and the cold air-conditioning equipment of heat to be heated using building construction material and room air
CN205026841U (en) * 2015-05-07 2016-02-10 大唐山东清洁能源开发有限公司 Solar airconditioning wall
CN108375149A (en) * 2018-03-23 2018-08-07 浙江理工大学 A kind of photovoltaic air-conditioning wall
CN209230066U (en) * 2018-11-23 2019-08-09 浙江大学 A kind of energy-saving type heat pump system and the assembled air-conditioning wall comprising the system

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