CN111351150A - Heat pump heat recovery type water-wind integrated unit - Google Patents

Heat pump heat recovery type water-wind integrated unit Download PDF

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Publication number
CN111351150A
CN111351150A CN202010186798.9A CN202010186798A CN111351150A CN 111351150 A CN111351150 A CN 111351150A CN 202010186798 A CN202010186798 A CN 202010186798A CN 111351150 A CN111351150 A CN 111351150A
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China
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air
refrigerant
heat pump
heat
unit
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CN202010186798.9A
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CN111351150B (en
Inventor
李科
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Li Ke
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Jiangsu Meisana Environmental Technology Co ltd
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Priority to CN202010186798.9A priority Critical patent/CN111351150B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F24F3/065Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00Use of energy recovery systems in air conditioning, ventilation or screening
    • 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
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/192Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • 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
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56Heat recovery units

Abstract

The invention provides a heat pump heat recovery type water-air integrated unit, which belongs to the technical field of refrigeration and air conditioning equipment and comprises a heat pump refrigerant main system arranged on the outdoor side and an air processing subsystem arranged on the indoor side; the air treatment subsystem comprises an auxiliary cooling unit and a secondary refrigerant unit, the air treatment subsystem is connected with the heat pump refrigerant main system through the auxiliary cooling unit, the refrigerant from the heat pump refrigerant main system enters the auxiliary cooling unit to pre-cool the air, and the redundant condensation heat generated by the secondary refrigerant unit is taken away. Because the outdoor main system can supplement the refrigerating or heating capacity of the indoor subsystem in an auxiliary mode, the compressor of the subsystem can use low power, the required discharged condensation heat is low, heat pump heat recovery can be achieved, and the redundant condensation heat can be taken away through the refrigerant of the main system to guarantee stable operation of the subsystem.

Description

Heat pump heat recovery type water-wind integrated unit
Technical Field
The invention relates to the technical field of refrigeration and air conditioning equipment, in particular to a heat pump heat recovery type water-wind integrated unit.
Background
With the development of society, the living standard of people is improved, and the public pursues healthy and comfortable indoor environment more and more, and similar building syndrome, air conditioner disease and haze scheduling problem receive more and more concern, and high travelling comfort air conditioning system such as water system air conditioner and radiation cooling heating is gradually accepted and accepted by everybody. However, the system has high requirement on the specialty, the system equipment is numerous and complicated, relatively special equipment is lacked, integration of a plurality of traditional air conditioning equipment such as an air-cooled heat pump cold and hot water unit, a water mixing controller, a fresh air dehumidifier, an exhaust fan, a humidifier, an automatic control system and the like is depended on, so that the risk is high, the cost is high, the energy consumption is high, the control is complex, the integration technology difficulty is high, few companies can really master the integration technology, the market needs an integrated standard equipment which is simpler and specially used for radiation heat supply and cold supply, and the system has the characteristics of high integration degree, no need of secondary integration design, easiness in installation, control and maintenance, moderate cost and the like.
The high-quality indoor environment involves multidimensional designs such as air temperature, average radiation temperature, humidity, noise, temperature gradient, wind sensation and cleanliness, the traditional scheme needs the cooperation of a plurality of devices and manufacturers, such as a cold and hot water air conditioning unit (cold and heat source), a fan coil, a heat recovery fresh air fan, a purifier, a humidifier, a dehumidifier, a capillary tube, a radiation plate, a floor heating and the like, the technical requirements on links such as products, design, construction, debugging and after-sale are high, merchants of a plurality of brands of products need to cooperate and communicate, various quality problems are easy to occur in the process, and the system is unstable in operation, high in energy consumption, inconvenient to operate and the like; the equipment lacks contact, the operation and the control are complex, the failure rate is high, the operation and maintenance workload is large, and the customer experience is not good.
Disclosure of Invention
The invention provides a heat pump heat recovery type water-wind integrated unit, and aims to solve various indoor environment problems of indoor temperature, humidity, cleanliness, noise, ventilation and the like through high-integration equipment.
The technical scheme provided by the invention is as follows:
a heat pump heat recovery type water-wind integrated unit comprises a heat pump refrigerant main system arranged on the outdoor side and an air processing subsystem arranged on the indoor side;
the air treatment subsystem comprises an auxiliary cooling unit and a secondary refrigerant unit, the air treatment subsystem is connected with the heat pump refrigerant main system through the auxiliary cooling unit, and refrigerant of the heat pump refrigerant main system enters the auxiliary cooling unit to pre-cool air and take away condensation heat generated by the secondary refrigerant unit.
Preferably, the air treatment subsystem comprises one or more indoor units connected in parallel;
each indoor unit comprises a second compressor 11, a second four-way valve 20 and a second branch tee 23 which are connected in sequence, wherein the second branch tee 23 is provided with two refrigerant outlets, and a refrigerant flowing out of a first path of refrigerant outlet of the second branch tee 23 sequentially passes through a second condenser 12, a second heat exchanger 13 and a second electronic expansion valve 15 and then enters a second confluence tee 24;
the refrigerant flowing out of the second refrigerant outlet of the second branch tee 23 passes through the reheat condenser 14 and the reheat electronic expansion valve 16 and then enters the second confluence tee 24;
the two refrigerants flowing out of the second three-way flow dividing valve 23 are mixed at the second three-way flow converging valve 24 and then enter the 2# loop of the first evaporator 4, and the 2# loop outlet of the first evaporator 4 is connected with a second four-way valve 20, and the second four-way valve 20 is connected with the suction end of the second compressor 11.
Preferably, the heat pump refrigerant main system is one or more outdoor units connected in parallel, and a liquid pipe and an air pipe of each indoor unit are respectively connected with a main liquid supply pipe 29 and a main air return pipe 30 of the outdoor unit;
each outdoor unit comprises a first compressor 1, a first four-way valve 5, a first condenser 2 and a main flow-dividing tee 6 which are connected in sequence;
a first path of refrigerant flowing out of the main branch tee joint 6 sequentially passes through the first electronic expansion valve 3 and the first evaporator 4 and then enters a main confluence tee joint 7, and is converged with indoor unit refrigerant return air at the main confluence tee joint 7, the main confluence tee joint 7 is connected with a first four-way valve 5, and the first four-way valve 5 is connected with a suction end of a first compressor 1;
the second refrigerant flowing out of the main branch tee 6 enters the first branch tee 21 of the indoor unit through the main liquid supply pipe 29 and is divided into two paths by the first branch tee 21, wherein one path enters the 1# loop of the first evaporator 4 after passing through the first precooling electronic expansion valve 18 and then flows back to the first confluence tee 22, the other path flows to the first confluence tee 22 after passing through the first heat-discharging electronic expansion valve 17 and the second heat exchanger 13, and the two paths of refrigerants are converged and then flow back to the outdoor unit through the main gas return pipe 30.
Preferably, the indoor unit is designed in a bidirectional countercurrent structure, and a fresh air and air processing channel and an exhaust heat recovery channel are arranged in a shell of the indoor unit;
wherein, a fresh air inlet of the indoor unit is communicated with a second evaporator 19, a second reheat condenser 14, an air supply fan 26 and an air supply outlet in sequence to form a fresh air and air processing channel of the indoor unit;
the second air-cooled condenser, the exhaust fan 27 and the exhaust outlet are sequentially communicated with the exhaust inlet of the indoor unit to form an exhaust and heat recovery channel of the indoor unit.
Preferably, a primary effect filter and a high-efficiency filter are arranged at a fresh air inlet of the indoor unit, and a primary effect filter is arranged at an air outlet of the indoor unit;
the air supply outlet of the indoor unit is provided with one or more additional devices including a humidifier, an anion generator, an ultraviolet disinfection lamp and an electrostatic dust removal device.
Preferably, the second condenser 12 is a copper tube aluminum foil fin condenser, and the second heat exchanger 13 is a fluorine-fluorine heat exchanger, a water-fluorine heat exchanger or a combination of heat exchangers of different forms.
Preferably, the second evaporator 19 is a double independent loop structure with its inner coils independent from each other, or the second evaporator 19 is a completely independent structure.
Preferably, the first compressor 1 is an inverter compressor, and the second compressor 11 is an inverter/fixed frequency compressor.
Preferably, the indoor unit and the outdoor unit are heat pump type and have various operation modes including cooling, heating, floor heating, dehumidifying, ventilating, and radiating cooling and heating.
Preferably, an oil separator is provided on the output side of the first compressor 1, and a gas-liquid separator is provided on the suction side of the first compressor 1;
copper filters are arranged at the inlet and outlet of the first electronic expansion valve 3, the second electronic expansion valve 15, the reheating electronic expansion valve 16, the first row hot electron expansion valve 17 and the first precooling electronic expansion valve 18.
According to the technical scheme of the invention, in the heat pump heat recovery type water-air integrated unit, an indoor operating system and an outdoor operating system are designed in a split mode, a heat pump refrigerant main system at the outdoor side is connected with an air treatment subsystem at the indoor side, because a secondary refrigerant unit of the subsystem and a refrigerant unit of the main system are independent, when fresh air is high in temperature and high in humidity, the load of the indoor subsystem is increased, the refrigerant of the outdoor main system automatically enters the indoor for auxiliary cooling and carries out precooling treatment on the air, so that the requirements of cooling and deep dehumidification on the fresh air can be met by using a small compressor with low noise for the secondary refrigerant unit of the subsystem, the generated condensation heat is less when dehumidification and cooling are carried out in summer due to the small compressor, the required air volume at the condensation side is correspondingly reduced, the condensation heat can be basically discharged through indoor exhaust air, and, energy is saved; when the exhaust air is not enough to take away the condensation heat, the redundant condensation heat can be taken away through the refrigerant of the outdoor main system to ensure the stable operation of the indoor subsystem, so that the stability of the indoor air treatment subsystem is greatly enhanced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a heat pump heat recovery type water-wind integrated unit;
FIG. 2 is a schematic view of the indoor unit according to the present invention;
FIG. 3 is a schematic view of an outdoor unit according to the present invention;
FIG. 4 is a schematic view of the structural arrangement of the indoor unit of the present invention;
fig. 5 is a schematic view showing the structural arrangement of the outdoor unit according to the present invention.
Description of the reference numerals
A first compressor 1; a first condenser 2; a first electronic expansion valve 3; a first evaporator 4; a first four-way valve 5; a main branch tee 6; a main junction tee 7; a first gas-liquid separator 8; a first oil separator 9; a first outdoor condensing fan 10; a second compressor 11; a second condenser 12; a second heat exchanger 13; a reheat condenser 14; a second electronic expansion valve 15; a reheat electronic expansion valve 16; a first row hot electron expansion valve 17; a first pre-cooling electronic expansion valve 18; a second evaporator 19; a second four-way valve 20; a first shunt tee 21; a first confluence tee 22; a second shunt tee 23; a second junction tee 24; an air filter 25; an air supply fan 26; an exhaust fan 27; an outdoor unit casing 28; a main liquid supply pipe 29; a main muffler 30.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
The invention provides a heat pump heat recovery type water-wind integrated unit which comprises a heat pump refrigerant main system arranged on the outdoor side and an air processing subsystem arranged on the indoor side.
The air treatment subsystem comprises an auxiliary cooling unit and a secondary refrigerant unit, the air treatment subsystem is connected with the heat pump refrigerant main system through the auxiliary cooling unit, refrigerant from the heat pump refrigerant main system enters the auxiliary cooling unit to pre-cool air, and takes away redundant condensation heat generated by the secondary refrigerant unit.
In the invention, the heat pump refrigerant main system is arranged outdoors, the heat pump refrigerant main system can be an air source heat pump refrigerant system or a ground source or water source heat pump refrigerant system, because the secondary refrigerant unit of the air treatment subsystem and the refrigerant unit of the main system are independent, the main system is used as a cold and heat source to provide cold and heat media for the subsystem as pre-treatment air, when fresh air is high in temperature and high in humidity, the load of the subsystem is larger, the refrigerant of the main system automatically enters indoors for auxiliary cooling, so that the requirement of cooling and deep dehumidification on the fresh air can be met by using a small compressor with low noise for the secondary refrigerant unit of the subsystem, and because the used compressor is smaller, when dehumidification and cooling are carried out in summer, the generated condensation heat is less, the required air volume of a condensation side is correspondingly reduced, and the condensation heat can be basically discharged, the heat recovery function of the heat pump is achieved, and energy is saved; when the exhaust air is not enough to take away the condensation heat, the redundant condensation heat can be taken away through the refrigerant of the main system to ensure the stable operation of the indoor subsystem, so that the stability of the indoor air treatment subsystem is greatly enhanced.
In practical application, the refrigerant can be selected from R410a, R22, R407c, R32 or R404, and the like.
The heat pump refrigerant main system of the heat pump heat recovery type water-air integrated unit is a primary system which is arranged outdoors, namely an outdoor unit for short, and the primary system can be one outdoor unit or formed by connecting a plurality of outdoor units in parallel so as to enhance the system capacity. The air treatment subsystem of the heat pump heat recovery type water-air integrated unit is used as a secondary system and is arranged indoors, namely an indoor unit for short, one outdoor unit is connected with one or more indoor units, the outdoor unit is used as a cold and heat source to provide cold and heat mediums to supply the indoor units for pretreating air, and meanwhile, the refrigerant can also take away redundant condensation heat discharged by a refrigerant system of the indoor unit, so that the stable operation of a refrigerating system of the indoor unit is ensured.
As shown in the figure, each outdoor unit is provided with a first compressor 1, a first condenser 2, a first electronic expansion valve 3, a first evaporator 4, a first four-way valve 5, a main branch tee 6, a main confluence tee 7, a first gas-liquid separator 8, a first oil separator 9, a first outdoor condensing fan 10, and related refrigeration accessories, such as electromagnetic valves, copper filters, one-way valves, high-pressure and low-pressure sensors, pressure switches, temperature sensors, temperature and humidity sensors, circuit board and other electrical control elements, which are connected by pipelines, and the refrigeration accessories are used as common-sense technologies for ensuring system operation and are not described in detail herein.
As shown in the figure, each indoor unit is provided with a second compressor 11, a second condenser 12, a second heat exchanger 13, a reheat condenser 14, a second electronic expansion valve 15, a reheat electronic expansion valve 16, a first heat-discharge electronic expansion valve 17, a first precooling electronic expansion valve 18, a second evaporator 19, a second four-way valve 20, a first three-way branch 21, a first three-way branch 22, a second three-way branch 23, a second three-way branch 24, an air filter 25, an air supply fan 26 and an air exhaust fan 27 which are connected by pipelines. And related refrigeration accessories, such as solenoid valves, copper filters, check valves, high and low pressure sensors, pressure switches, temperature sensors, temperature and humidity sensors, circuit boards and other electrical control elements, which are common knowledge technologies for ensuring the operation of the system and are not described in detail herein. When a plurality of indoor units work together, the structure, the control principle and the operation principle of each indoor unit are the same, and a liquid pipe and an air pipe of each indoor unit are respectively connected with a main liquid supply pipe 29 and a main air return pipe 30 of the outdoor unit through a branch pipe.
In the present invention, the operation principle of the outdoor unit is as follows:
with the first compressor 1 as a starting point, a gaseous refrigerant is compressed by the first compressor 1 to become a high-temperature high-pressure refrigerant, then enters the first condenser 2 through the first four-way valve 5 to be cooled and cooled to become a medium-temperature high-pressure state, and then is divided into two paths through the main flow-dividing tee joint 6, wherein the first path of refrigerant enters the first electronic expansion valve 3 of the outdoor unit, and the second path of refrigerant enters the indoor unit through the main liquid supply pipe 29:
specifically, the refrigerant entering the first electronic expansion valve 3 is throttled to become an isenthalpic low-temperature low-pressure gas-liquid mixture, then absorbs heat by the first evaporator 4 to become a medium-temperature low-pressure gas, and finally enters the main confluence tee 7. The first evaporator 4 is a water-fluorine type heat exchanger which can be a plate type or sleeve type heat exchanger and the like, the temperature of the refrigeration water side in summer ranges from 5 ℃ to 22 ℃, cold water is provided for the tail ends of a fan coil, a radiation plate and the like, heating in winter ranges from 25 ℃ to 50 ℃, and hot water is provided for the tail ends of the fan coil, a floor heating plate, the radiation plate and the like.
The refrigerant entering the indoor unit is divided into two paths by a first shunt tee 21: one path of refrigerant flows to the first precooling electronic expansion valve 18, enters the No. 1 loop of the first evaporator 4 after being throttled by the first precooling electronic expansion valve 18 to be evaporated, and is changed into intermediate-temperature low-pressure gaseous refrigerant after absorbing heat in air, so that the purposes of dehumidifying and cooling the air are achieved, and the gaseous refrigerant flows back to the first confluence tee 22 of the indoor unit; the other path of refrigerant enters the second heat exchanger 13 after being throttled by the first heat-discharging electronic expansion valve 17, takes away the redundant condensation heat generated by the refrigerant unit of the indoor unit, prevents the exhaust air volume from reducing or the load from increasing, and causes the high pressure of the system to be overhigh, the design is also an important innovation of the unit, in addition, the refrigerant becomes the vapor of medium temperature and low pressure after absorbing heat in the second heat exchanger 13, flows to the first confluence tee 22 of the indoor unit, and is converged with the gaseous refrigerant of the previous path and then returns to the outdoor unit through the main air return pipe 30.
Further, the gaseous refrigerant of the outdoor unit and the gaseous refrigerant of the indoor unit join at the main junction tee 7 and then enter the suction end of the first compressor 1, thereby completing the refrigeration cycle. Therefore, the main system of the outdoor unit can fulfill the double purposes of providing cold water and treating air, and simultaneously takes away part of redundant condensation heat of the secondary refrigeration system of the indoor unit, so that the stable operation of the refrigeration system of the indoor unit is ensured. Compared with the traditional cold and hot water air conditioning unit, a dehumidifier, a total heat exchange heat recovery and control system and other equipment, the scheme is simpler, particularly when the load changes, the capacity output of the whole machine is very convenient, accurate and stable in allocation, and the allocation can be completed through a control mainboard, a frequency converter and an electronic expansion valve; meanwhile, the design that condensation waste heat generated by the secondary system of the indoor unit is discharged to the outside through the heat exchanger greatly ensures the stability of the system and avoids the overhigh pressure of the system under extreme conditions.
The outdoor unit comprises a first compressor 1, a first four-way valve 5, a first condenser 2, a first electronic expansion valve 3, a main flow dividing tee joint 6, a main flow converging tee joint 7 and a first evaporator 4 which are connected to form a main circulation loop of the outdoor unit, and the components are arranged in a sheet metal shell to form the outdoor unit.
Further, the operation principle of the indoor unit is as follows:
for the sake of brevity, the operation process of the indoor unit system is described by taking a refrigeration cycle as an example, and the implementation of a heating cycle by switching the flow direction of the refrigerant through the four-way valve is taken as an obvious basic air conditioning common sense and will not be described here. The circulation of the indoor unit system takes the second compressor 11 as a starting point, the gaseous refrigerant is compressed into a high-temperature and high-pressure refrigerant in the second compressor 11, the high-temperature and high-pressure refrigerant passes through the second four-way valve 20 and then enters the second tee 23, the second tee 23 has two refrigerant outlets, and the refrigerant is divided into two paths by the second tee 23:
the refrigerant flowing out of the first path of refrigerant outlet of the second tee branch 23 enters the second condenser 12 for cooling and then is further cooled by the second heat exchanger 13 to become a medium-temperature high-pressure gas-liquid mixture, and the medium-temperature high-pressure gas-liquid mixture reaches the second confluence tee 24;
the refrigerant flowing out of the second refrigerant outlet of the second branch three-way 23 flows to the reheat condenser 14, and at this time, the operation modes are divided into two operation modes, i.e., a reheat mode and a no-reheat mode, when the temperature of the air cooled and dehumidified by the second evaporator 19 does not need to be raised, the electronic reheat expansion valve 16 connected to the reheat condenser 14 is closed, and the route is blocked, and when the temperature of the air cooled and dehumidified by the second evaporator 19 needs to be raised, the refrigerant releases heat through the reheat condenser 14 to reheat the air, and the cooled refrigerant enters the electronic reheat expansion valve 16 and reaches the second confluence three-way 24 together with the refrigerant passing through the second electronic expansion valve 15.
Two paths of refrigerants flowing out of the second flow dividing tee 23 are mixed at the second confluence tee 24 and then enter a No. 2 loop of the first evaporator 4 to be subjected to an evaporation and heat absorption process, the two paths of refrigerants are used for performing secondary cooling and dehumidification on No. 1 loop air passing through the second evaporator 19, and the evaporated refrigerants enter a suction end of the second compressor 11 through the second four-way valve 20 to complete a secondary refrigeration cycle.
In the invention, a second compressor 11, a second four-way valve 20, a second condenser 12, a second reheat condenser 14, a second heat exchanger 13, a second electronic expansion valve 15, a second reheat electronic expansion valve 16, a second shunt tee 23 and a second confluence tee 24 are connected to form a secondary circulation loop, and the secondary circulation loop, a first precooling electronic expansion valve 18, a first thermoelectricity discharging expansion valve 17, a first shunt tee 21, a first confluence tee 22 and a sheet metal shell form an indoor unit.
In addition, the indoor unit adopts a bidirectional countercurrent structure design, and the shell of the indoor unit comprises a fresh air and air processing channel and an exhaust heat recovery channel.
The fresh air inlet of the indoor unit is communicated with the second evaporator 19, the second reheat condenser 14, the air supply fan 26 and the air supply outlet in sequence to form a fresh air and air processing channel of the indoor unit. The second air-cooled condenser, the exhaust fan 27 and the exhaust outlet are sequentially communicated with the exhaust inlet of the indoor unit to form an exhaust and heat recovery channel of the indoor unit.
Furthermore, a primary effect filter and a high-efficiency filter are arranged at a fresh air inlet of the indoor unit, and a primary effect filter is arranged at an air outlet of the indoor unit. The air supply outlet of the indoor unit is provided with one or more additional devices including a humidifier, an anion generator, an ultraviolet disinfection lamp and an electrostatic dust removal device.
Preferably, the second air-cooled condenser is a copper tube aluminum foil fin condenser, and the second heat exchanger 13 is a fluorine-fluorine heat exchanger, a water-fluorine heat exchanger or a combination of heat exchangers of different forms.
Preferably, the outdoor unit generally adopts a side-outlet or top-outlet design, and an air-cooled outlet is formed in the side surface of the outdoor unit casing 28, the air-cooled outlet is communicated with the condensing fan, and the condensing fan is communicated with the air-cooled condenser. The compressor, the water-fluorine heat exchanger, the electronic expansion valve and other parts are fixed on the sheet metal structure of the outdoor unit.
Preferably, the second evaporator 19 is a double independent loop structure with its inner coils independent from each other, or the second evaporator 19 is a completely independent structure.
Preferably, the first compressor 1 is an inverter compressor, and the second compressor 11 is an inverter/fixed frequency compressor. In the invention, the outdoor unit is used as a main system, the variable frequency compressor is adopted to respond to load change in time and output according to needs, the indoor unit is responsible for processing latent heat of fresh air or air, the outdoor unit adopts a variable frequency design and can allocate capacity output, namely, the capacity of a refrigerant entering a No. 1 loop of an indoor cooling evaporator is adjusted by adjusting the main system to realize adjustment of refrigeration or heating capacity, the indoor unit generally adopts a fixed frequency system, the system is simpler and more reliable, independent temperature and humidity control is really realized, and the whole room is a whole healthy environment solution.
Preferably, the indoor unit and the outdoor unit are heat pump type, and have various operation modes including cooling, heating, floor heating, dehumidification, ventilation, and radiation cooling and heating.
Preferably, an oil separator is provided on the output side of the first compressor 1, and a gas-liquid separator is provided on the suction side of the first compressor 1. Copper filters are arranged at the inlet and outlet of the first electronic expansion valve 3, the second electronic expansion valve 15, the reheating electronic expansion valve 16, the first row of hot electron expansion valves 17 and the first precooling electronic expansion valve 18.
The refrigerant circulation of the indoor unit and the auxiliary circulation of the outdoor unit are completed in an auxiliary way, and the main realization functions and effects are as follows:
1. after the fresh air is filtered by the filter, the purification and filtration functions are completed;
2. the fresh air completes the functions of dehumidification and cooling of the air through an internal refrigerant system;
3. the exhaust fan 27 takes away the condensation waste heat of the second condenser 12 to achieve the purpose of heat recovery of the heat pump;
4. the reheat condenser 14 can also utilize the waste heat of the compressor to properly heat the air with excessive temperature reduction, so that the comfort level is improved;
5. because the air volume of the exhaust air is possibly small and cannot completely meet the discharge of condensation heat, the second heat exchanger 13 can take away the redundant heat by using the external machine refrigerant, thereby ensuring the safe and reliable operation of the system.
The scheme of the invention can realize various modes of refrigeration, heating, floor heating, dehumidification, ventilation, radiation cooling and heating and the like, and can realize all-round improvement of indoor environment and guarantee healthy habitation. The heat pump heat recovery type water-air integrated unit can completely meet the requirements of providing cold and hot water, dehumidifying fresh air, purifying, adjusting temperature, exhausting air, recovering heat of a heat pump and the like, has obvious energy-saving effect, simple system, high unit integration level, convenient installation and good engineering adaptability, simultaneously, the indoor unit can realize the processing processes of dehumidifying, adjusting temperature, humidifying, filtering and the like of fresh air and return air only by configuring a smaller compressor, because the outdoor unit can supplement the refrigerating or heating capacity of the indoor unit in an auxiliary way, the compressor of the indoor unit can use smaller power, the noise is smaller, the volume is smaller, the heat pump heat recovery can be carried out by utilizing the exhausted air, the important design innovation of the heat pump heat recovery unit is realized, and the problems that the conventional total heat exchanger has large resistance and is easily blocked by pollutants are solved, meanwhile, the noise and the energy consumption are low, and the device is suitable for household environment.
In conclusion, the beneficial effects of the invention are as follows:
the outdoor unit can provide cold and hot water for various terminal forms such as indoor fan coil, floor heating, radiation plate and capillary; the outdoor unit can also provide a refrigerant for the indoor unit, the fresh air or the air is dehumidified in advance, and the outdoor unit and the indoor unit refrigerant system perform secondary cooling and dehumidification, so that the problem that the direct expansion type system is poor in dehumidification and cooling effects on the high-temperature high-humidity fresh air is solved, the installation is very convenient, and a mature multi-split installation process is adopted.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A heat pump heat recovery type water-wind integrated unit is characterized by comprising a heat pump refrigerant main system arranged on the outdoor side and an air processing subsystem arranged on the indoor side;
the air treatment subsystem comprises an auxiliary cooling unit and a secondary refrigerant unit, the air treatment subsystem is connected with the heat pump refrigerant main system through the auxiliary cooling unit, and refrigerant of the heat pump refrigerant main system enters the auxiliary cooling unit to pre-cool air and take away condensation heat generated by the secondary refrigerant unit.
2. The heat pump heat recovery type water-wind integrated unit according to claim 1, wherein the air handling subsystem includes one or more indoor units connected in parallel;
each indoor unit comprises a second compressor (11), a second four-way valve (20) and a second tee branch joint (23) which are connected in sequence, wherein the second tee branch joint (23) is provided with two refrigerant outlets, and refrigerant flowing out of a first path of refrigerant outlet of the second tee branch joint (23) sequentially passes through a second condenser (12), a second heat exchanger (13) and a second electronic expansion valve (15) and then enters a second confluence tee joint (24);
refrigerant flowing out of a second refrigerant outlet of the second branch tee joint (23) passes through a reheat condenser (14) and a reheat electronic expansion valve (16) and then enters the second confluence tee joint (24);
and two paths of refrigerants flowing out of the second flow dividing tee joint (23) are mixed at the second confluence tee joint (24) and then enter a 2# loop of the first evaporator (4), the outlet of the 2# loop of the first evaporator (4) is connected with a second four-way valve (20), and the second four-way valve (20) is connected with the suction end of the second compressor (11).
3. The heat pump heat recovery type water-air integrated unit according to claim 2, wherein the heat pump refrigerant main system is one or more outdoor units connected in parallel, and a liquid pipe and an air pipe of each indoor unit are respectively connected with a main liquid supply pipe (29) and a main air return pipe (30) of the outdoor unit;
each outdoor unit comprises a first compressor (1), a first four-way valve (5), a first condenser (2) and a main flow-dividing tee joint (6) which are connected in sequence;
a first path of refrigerant flowing out of the main flow dividing tee joint (6) sequentially passes through a first electronic expansion valve (3) and a first evaporator (4) and then enters a main flow converging tee joint (7), and is converged with the return air of the indoor unit refrigerant at the main flow converging tee joint (7), the main flow converging tee joint (7) is connected with a first four-way valve (5), and the first four-way valve (5) is connected with the air suction end of a first compressor (1);
and a second path of refrigerant flowing out of the main flow-dividing tee joint (6) enters a first flow-dividing tee joint (21) of the indoor unit through a main liquid supply pipe (29) and is divided into two paths by the first flow-dividing tee joint (21), wherein one path of refrigerant enters a No. 1 loop of the first evaporator (4) after passing through the first precooling electronic expansion valve (18) and then flows back to the first confluence tee joint (22), the other path of refrigerant flows to the first confluence tee joint (22) after passing through the first heat-discharge electronic expansion valve (17) and the second heat exchanger (13), and the two paths of refrigerant are converged and then return to the outdoor unit through a main air return pipe (30).
4. The heat pump heat recovery type water-air integrated unit according to claim 2, wherein the indoor unit is designed in a bidirectional countercurrent structure, and a fresh air and air treatment channel and an exhaust air heat recovery channel are arranged in a casing of the indoor unit;
wherein, a fresh air inlet of the indoor unit is communicated with a second evaporator (19), a second reheat condenser (14), an air supply fan (26) and an air supply outlet in sequence to form a fresh air and air processing channel of the indoor unit;
the exhaust inlet of the indoor unit is communicated with a second condenser (12), an exhaust fan (27) and an exhaust outlet in sequence to form an exhaust and heat recovery channel of the indoor unit.
5. The heat pump heat recovery type water-wind integrated unit according to claim 4, wherein a primary and high efficiency filter is provided at a fresh air inlet of the indoor unit, and a primary filter is provided at an air outlet thereof;
the air supply outlet of the indoor unit is provided with one or more additional devices including a humidifier, an anion generator, an ultraviolet disinfection lamp and an electrostatic dust removal device.
6. The heat pump heat recovery type water-wind integrated unit according to claim 2, wherein the second condenser (12) is a copper tube aluminum foil fin condenser, and the second heat exchanger (13) is a fluorine-fluorine heat exchanger, a water-fluorine heat exchanger or a combination of heat exchangers of different forms.
7. The heat pump heat recovery type water-wind integrated unit according to claim 2, wherein the second evaporator (19) has a double independent loop structure in which inner coils are independent from each other, or the second evaporator (19) has a completely independent structure.
8. The heat pump heat recovery type water-wind integrated unit according to claim 3, wherein the first compressor (1) is an inverter compressor, and the second compressor (11) is an inverter/fixed frequency compressor.
9. The heat pump heat recovery type water-air integrated unit according to claim 3, wherein the indoor unit and the outdoor unit are of a heat pump type and have a plurality of operation modes including cooling, heating, floor heating, dehumidifying, ventilating, and radiating cooling and heating.
10. The heat pump heat recovery type water-wind integrated unit according to claim 3, wherein an oil separator is provided on an output side of the first compressor (1), and a gas-liquid separator is provided on an intake side of the first compressor (1);
copper filters are arranged at the inlet and outlet of the first electronic expansion valve (3), the second electronic expansion valve (15), the reheating electronic expansion valve (16), the first row of hot electron expansion valves (17) and the first precooling electronic expansion valve (18).
CN202010186798.9A 2020-03-17 2020-03-17 Heat pump heat recovery type water-wind integrated unit Active CN111351150B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113418253A (en) * 2021-06-30 2021-09-21 深圳市英维克科技股份有限公司 Indoor environment temperature adjusting device, control method, computer device and medium

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201819325U (en) * 2010-09-25 2011-05-04 上海朗诗建筑科技有限公司 Energy recovery device of fresh air conditioning system
CN102494372A (en) * 2011-12-21 2012-06-13 南京五洲制冷集团有限公司 Double-cold source full fresh air dehumidifier and control method thereof
CN102538112A (en) * 2012-03-20 2012-07-04 上海理工大学 Household heat and humidity separate control radiation air conditioning system and control method thereof
CN103075786A (en) * 2011-05-06 2013-05-01 荣国华 Heat-recovery air conditioning unit
CN104266277A (en) * 2014-10-21 2015-01-07 东南大学 Heat pipe heat recovery all fresh air dehumidification air-conditioning device
CN104329759A (en) * 2014-11-10 2015-02-04 上海理工大学 Temperature control dehumidification system and temperature control dehumidification method for fresh air of radiation air conditioner
CN107461837A (en) * 2017-09-22 2017-12-12 江苏克力空调有限公司 Four-pipe system multiple on-line system with heat recovery function
CN107504600A (en) * 2017-09-01 2017-12-22 邱宏祥 Monoblock type radiation air-conditioner unit
CN207132480U (en) * 2017-09-01 2018-03-23 邱宏祥 Monoblock type radiation air-conditioner unit
JP2018189351A (en) * 2018-01-10 2018-11-29 日立ジョンソンコントロールズ空調株式会社 Air conditioner
CN109556215A (en) * 2018-12-19 2019-04-02 邱宏祥 A kind of connected radiation central air conditioner water heater group
CN208983478U (en) * 2018-10-15 2019-06-14 浙江国祥股份有限公司 A kind of thermostatic and humidistatic air conditioning unit group of the secondary supercooling of band
US20190390867A1 (en) * 2019-07-03 2019-12-26 Lg Electronics Inc. Air conditioner and method for operating the air conditioner
CN110848794A (en) * 2019-12-16 2020-02-28 湖南红橡室内气候技术有限公司 Single cold heat source fresh air humidifying unit

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201819325U (en) * 2010-09-25 2011-05-04 上海朗诗建筑科技有限公司 Energy recovery device of fresh air conditioning system
CN103075786A (en) * 2011-05-06 2013-05-01 荣国华 Heat-recovery air conditioning unit
CN102494372A (en) * 2011-12-21 2012-06-13 南京五洲制冷集团有限公司 Double-cold source full fresh air dehumidifier and control method thereof
CN102538112A (en) * 2012-03-20 2012-07-04 上海理工大学 Household heat and humidity separate control radiation air conditioning system and control method thereof
CN104266277A (en) * 2014-10-21 2015-01-07 东南大学 Heat pipe heat recovery all fresh air dehumidification air-conditioning device
CN104329759A (en) * 2014-11-10 2015-02-04 上海理工大学 Temperature control dehumidification system and temperature control dehumidification method for fresh air of radiation air conditioner
CN207132480U (en) * 2017-09-01 2018-03-23 邱宏祥 Monoblock type radiation air-conditioner unit
CN107504600A (en) * 2017-09-01 2017-12-22 邱宏祥 Monoblock type radiation air-conditioner unit
CN107461837A (en) * 2017-09-22 2017-12-12 江苏克力空调有限公司 Four-pipe system multiple on-line system with heat recovery function
JP2018189351A (en) * 2018-01-10 2018-11-29 日立ジョンソンコントロールズ空調株式会社 Air conditioner
CN208983478U (en) * 2018-10-15 2019-06-14 浙江国祥股份有限公司 A kind of thermostatic and humidistatic air conditioning unit group of the secondary supercooling of band
CN109556215A (en) * 2018-12-19 2019-04-02 邱宏祥 A kind of connected radiation central air conditioner water heater group
US20190390867A1 (en) * 2019-07-03 2019-12-26 Lg Electronics Inc. Air conditioner and method for operating the air conditioner
CN110848794A (en) * 2019-12-16 2020-02-28 湖南红橡室内气候技术有限公司 Single cold heat source fresh air humidifying unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
黄东等: "室外换热器流路布置对热泵空调器的性能影响分析", 《西安交通大学学报》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113418253A (en) * 2021-06-30 2021-09-21 深圳市英维克科技股份有限公司 Indoor environment temperature adjusting device, control method, computer device and medium

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