CN209819742U - Variable-frequency multi-connected radiation heating and refrigerating air conditioning system - Google Patents

Variable-frequency multi-connected radiation heating and refrigerating air conditioning system Download PDF

Info

Publication number
CN209819742U
CN209819742U CN201920107710.2U CN201920107710U CN209819742U CN 209819742 U CN209819742 U CN 209819742U CN 201920107710 U CN201920107710 U CN 201920107710U CN 209819742 U CN209819742 U CN 209819742U
Authority
CN
China
Prior art keywords
refrigerant
air
heat exchange
water
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201920107710.2U
Other languages
Chinese (zh)
Inventor
龚长山
王伟华
吴家祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Three Nei Electrical Equipment Co Ltd
Original Assignee
Nanjing Three Nei Electrical Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Three Nei Electrical Equipment Co Ltd filed Critical Nanjing Three Nei Electrical Equipment Co Ltd
Priority to CN201920107710.2U priority Critical patent/CN209819742U/en
Application granted granted Critical
Publication of CN209819742U publication Critical patent/CN209819742U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The utility model relates to a frequency conversion multi-generation radiation heating refrigeration air conditioning system, including frequency conversion air source heat pump air conditioning system and refrigerant-air heat transfer dehydrating unit, frequency conversion air source heat pump air conditioning system includes host computer frequency conversion compressor, cross valve, outdoor wind side heat transfer device and refrigerant-water heat transfer device, and outdoor wind side heat transfer device and refrigerant-water heat transfer device's one end are connected through the cross valve to host computer frequency conversion compressor, and compressor induction port and outdoor wind side heat transfer device and refrigerant-water heat transfer device's the other end are connected respectively through refrigerant connecting copper pipe in every refrigerant-air heat transfer dehydrating unit's both ends, and refrigerant-water heat transfer device externally connects radiation heating refrigeration end device. Through the independent regulation control respectively to indoor temperature and humidity, solve the controllable hot and cold water of the required temperature of radiation heating refrigeration end device, solve the dehumidification demand that every independent space is different simultaneously, make the temperature and the humidity of room air at human comfortable within range.

Description

Variable-frequency multi-connected radiation heating and refrigerating air conditioning system
Technical Field
The utility model relates to a frequency conversion allies oneself with air conditioner technical field more, especially relates to a frequency conversion allies oneself with radiation heating refrigeration air conditioning system more.
Background
The frequency conversion multi-connected air conditioner applied at present mainly comprises the following three types:
the first type is a variable frequency air conditioner host and an air conditioner indoor unit with a refrigerant-air heat exchange device, when the air conditioner works, the air conditioner can only supply heat or cool the room in an air blowing mode through the air conditioner indoor unit, and the air conditioner system has the defects that: 1. when the indoor temperature of the air conditioner is reduced in summer, the indoor unit of the air conditioner can continuously change the moisture in the indoor air into condensed water to be discharged outdoors while cooling, the indoor air can be dried more and more, and the indoor personnel can feel uncomfortable and air conditioner diseases can be caused; 2. when indoor heating is carried out in winter, because the outdoor unit of the air conditioner needs to be frequently defrosted, at the moment, the indoor unit of the air conditioner reversely absorbs heat from indoor air to defrost the outdoor unit of the air conditioner, so that the indoor temperature is reduced, the temperature fluctuation is large, and the comfort of people is poor. In addition, because the indoor unit of the air conditioner obtains heat from indoor air to defrost the outdoor unit of the air conditioner, the defrosting time is long, the heating effect of the air conditioner in winter is poor, the energy efficiency is low, and the energy consumption is high. 3. The refrigeration and heating of the air conditioner can be completed only by blowing air through the indoor unit, and the comfort of human body is reduced due to the air blowing.
The second variable-frequency multi-connected air conditioner form is as follows: the air conditioner comprises a variable frequency air conditioner outdoor host, an air conditioner indoor unit containing a refrigerant-air heat exchanger and a heat exchange water module containing refrigerant-water. When the indoor air conditioner is used for indoor refrigeration in summer, the indoor air conditioner completely depends on the air blowing to cool the indoor air conditioner in a convection heat transfer mode, the heat exchange water module does not operate in a refrigeration mode when the air conditioner operates in summer, and when the air conditioner operates for heating in winter, the heat exchange water module heats water and provides hot water for room floor heating or radiating fins for heating.
The third is a frequency conversion air source heat pump type, and the product of the type is only a heat exchange water module of a refrigerant-water heat exchanger. The cold water generated by the heat exchange water module is used for cooling the indoor in summer, and the hot water generated by the heat exchange water module is used for supplying heat to the indoor through a floor heater, a radiator or a fan coil in winter. The product water system is complex in design and installation, long in engineering construction period and easy to cause system quality problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a frequency conversion multiplex radiation heating and refrigerating air conditioning system, which can respectively and independently control the indoor temperature and humidity, and heat or refrigerate the indoor by the hot water or cold water flowing through the radiation heating and refrigerating end device in a radiation heat transfer mode; on the other hand, indoor air or fresh air entering the room is dehumidified by the refrigerant-air heat exchange and dehumidification device, so that the humidity of the indoor air is in a comfortable range of a human body, the temperature of a radiation surface of the indoor air is higher than the dew point temperature of the indoor air, and the dew condensation of the radiation surface is avoided.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the frequency conversion multi-connected radiation heating and refrigerating air conditioning system comprises a frequency conversion air source heat pump air conditioning system and a refrigerant-air heat exchange and dehumidification device, wherein the frequency conversion air source heat pump air conditioning system comprises a host frequency conversion compressor, a four-way valve, an outdoor air side heat exchange device and a refrigerant-water heat exchange device, the host frequency conversion compressor is connected with one end of the outdoor air side heat exchange device and one end of the refrigerant-water heat exchange device through the four-way valve, the refrigerant-air heat exchange and dehumidification device is connected in parallel, two ends of each refrigerant-air heat exchange and dehumidification device are respectively connected with the other end of the host frequency conversion compressor, the other end of the outdoor air side heat exchange device and the other end of the refrigerant-water heat exchange device through refrigerant connecting copper pipes, and the refrigerant-water heat.
In the above scheme, each refrigerant-air heat exchange dehumidifier is provided with a dehumidification control module, the dehumidification control module comprises a microprocessor and a temperature and humidity sensor connected with the microprocessor, the temperature and humidity sensor is used for detecting indoor temperature and humidity parameters and transmitting the indoor temperature and humidity parameters to the microprocessor for analysis, calculation and processing, and when the indoor temperature and humidity parameters exceed the preset temperature and humidity threshold range of the microprocessor, the microprocessor automatically controls the refrigerant-air heat exchange dehumidifier to be opened.
In the above scheme, the host inverter compressor is provided with a compressor exhaust port and a compressor suction port, the upper interface of the four-way valve is connected with the compressor exhaust port, the right interface is connected with the outdoor air-side heat exchange device, the left interface is connected with the refrigerant-water heat exchange device, and the lower interface is connected with the compressor suction port.
In the above scheme, the refrigerant-water heat exchange device is a cold and hot water module, and the refrigerant-air heat exchange dehumidification device is a variable-frequency dehumidification indoor unit.
The frequency conversion multi-connected radiation heating and refrigerating air conditioning system of the utility model has independent temperature and humidity control, and supplies or refrigerates indoor heat or cold water in a radiation heat transfer mode through the hot water or cold water flowing through the radiation heating and refrigerating end device; indoor air or indoor new air dehumidification is got into through frequency conversion dehumidification indoor set, and the frequency conversion dehumidification indoor set in every independent space carries out the freezing dehumidification of independent refrigerant direct evaporation, and dehumidification ability is strong, dehumidification efficiency is high and the dehumidification space scope is nimble controllable.
Drawings
Fig. 1 is a schematic structural diagram of a variable-frequency multiple-radiation heating, cooling and air-conditioning system according to an embodiment of the present invention;
description of reference numerals: 1. the system comprises a main machine variable frequency compressor, 2, a compressor exhaust port, 3, a compressor suction port, 4, a four-way valve, 5, an outdoor air side heat exchange device, 6, a refrigerant-water heat exchange device, 7, a water inlet, 8, a water outlet, 9, a stop valve, 10, a refrigerant-air heat exchange and dehumidification device, 11, an air inlet, 12, an air outlet, 13, a refrigerant copper pipe, 14, a cold and hot water pipe, 15, a refrigerant connecting copper pipe, 16 and a radiation heating and refrigeration end device.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1, the utility model discloses a frequency conversion allies oneself with radiation heating refrigeration air conditioning system more, including frequency conversion air source heat pump air conditioning system and distributed independent refrigerant-air heat transfer dehydrating unit 10. Wherein, the frequency conversion air source heat pump air conditioning system comprises a main machine frequency conversion compressor 1 and a four-way valve 4, the outdoor air side heat exchange device 5 and the refrigerant-water heat exchange device 6 are connected through a four-way valve 4 by the refrigerant copper pipe 13, the host frequency conversion compressor 1 is provided with a compressor exhaust port 2 and a compressor suction port 3, the compressor exhaust port 2 is connected with one end of the outdoor air side heat exchange device 5 and one end of the refrigerant-water heat exchange device 6 through the refrigerant copper pipe 13, the refrigerant-air heat exchange dehumidification devices 10 are a plurality of, two ends of each refrigerant-air heat exchange dehumidification device 10 are respectively connected with the compressor suction port 3 and the other end of the outdoor air side heat exchange device 5 and the other end of the refrigerant-water heat exchange device 6 through the refrigerant connecting copper pipe 15 and the stop valve 9, and the refrigerant-water heat exchange device 6 is externally connected with a radiation heat supply refrigeration. Cold and hot water generated by a refrigerant-water heat exchange device of the system is supplied to a radiation tail end system to adjust and control the indoor temperature.
The outdoor air side heat exchange device 5 and the refrigerant-water heat exchange device 6 are both provided with electronic expansion valve throttling elements and have an electronic throttling function, an upper interface of the four-way valve 4 is connected with the exhaust port 2 of the compressor, a right interface of the four-way valve 4 is connected with the outdoor air side heat exchange device 5, a left interface of the four-way valve 4 is connected with one end of the refrigerant-water heat exchange device 6, and a lower interface of the four-way valve 4 is connected with the suction port 3 of the compressor.
Each refrigerant-air heat exchange dehumidification device 10 is internally provided with a dehumidification control module, and the dehumidification control module comprises a microprocessor and a temperature and humidity sensor connected with the microprocessor. The temperature and humidity sensor is used for detecting indoor temperature and humidity parameters and transmitting the indoor temperature and humidity parameters to the microprocessor with the model number of SPCE061A for analysis and calculation, and when the indoor temperature and humidity parameters exceed the temperature and humidity threshold range preset by the microprocessor, the microprocessor automatically controls the opening of the refrigerant-air heat exchange dehumidification device 10.
In one embodiment, the refrigerant-water heat exchange device 6 is a cold and hot water module, the refrigerant-air heat exchange dehumidification device 10 is a variable-frequency dehumidification indoor unit, and the radiant heat supply refrigeration end device 16 is a ground heating pipe network, a capillary pipe network or other radiant end devices.
An operation method of a variable-frequency multi-split radiation heating and refrigerating air-conditioning system comprises the steps of heating in winter, refrigerating in summer and cooling in spring and autumn when the outdoor temperature is lower than 24 ℃ and the outdoor temperature is higher than or equal to 24 ℃.
In the operation direction of the heating refrigerant in winter, the high-temperature and high-pressure refrigerant generated by the frequency conversion compressor 1 of the main machine flows into the refrigerant-water heat exchange device 6 after being reversed by the exhaust port 2 of the compressor, the refrigerant copper pipe 13 and the four-way valve 4, the circulating air-conditioning water of the radiation heating and refrigerating end device 16 flows into the refrigerant-water heat exchange device 6 through the water inlet 7, the refrigerant and the circulating air-conditioning water perform 'refrigerant-water' heat exchange in the refrigerant-water heat exchange device 6 to generate heating air-conditioning water with adjustable water temperature, the temperature is 20 ℃ to 50 ℃, and then the heating air-conditioning water flows into the radiation heating and refrigerating end device 16. The refrigerant after heat exchange and temperature reduction is divided into two paths, one path of the refrigerant flows through the outdoor air side heat exchange device 5, the refrigerant is subjected to evaporation and temperature reduction after being throttled by an electronic expansion valve throttling element in the outdoor air side heat exchange device 5, the refrigerant exchanges heat with outdoor air and absorbs heat from the outdoor air, the refrigerant after heat absorption and temperature rise is reversed by the four-way valve 4 and then directly flows into the host variable frequency compressor 1 through the compressor air suction port 3, and an operation cycle is completed; when the dehumidification control module detects that the indoor temperature and humidity parameters exceed the threshold range, if the threshold range of the relative humidity is 30% -50%, the refrigerant enters a plurality of variable-frequency dehumidification indoor units through the stop valve 9 in the other path, the refrigerant is throttled in the variable-frequency dehumidification indoor units through electronic expansion valve throttling elements of the variable-frequency dehumidification indoor units and then is evaporated and cooled, so that the temperature of heat exchange fins of the variable-frequency dehumidification indoor units is reduced, indoor air flowing into the variable-frequency dehumidification indoor units from the air inlet 11 or fresh air needing to enter the rooms flows out from the air outlet 12 after passing through the heat exchange fins, and water in the air is condensed into condensed water on the heat exchange fins and then is discharged, so that the aim of dehumidifying the. The refrigerant flowing out of the variable frequency dehumidifier directly flows into the host variable frequency compressor 1 through the compressor air suction port 3 to complete independent dehumidification operation circulation of the down-conversion dehumidification indoor unit in a heat supply operation mode, and in the dehumidification process, waste cold energy of the cold and hot water module in normal operation is fully utilized, and the energy of the host variable frequency compressor 1 is not additionally consumed.
In the running direction of the refrigerating refrigerant in summer, the high-temperature and high-pressure refrigerant generated by the frequency conversion compressor 1 of the main machine flows into the outdoor air side heat exchange device 5 after being reversed by the four-way valve 4 through the exhaust port 2 of the compressor and the refrigerant copper pipe 13, exchanging heat with outdoor air flowing into the outdoor air side heat exchange device 5, cooling the refrigerant, dividing the cooled refrigerant into two paths, one path enters the refrigerant-water heat exchange device 6, after being throttled by the electronic expansion valve throttling element, the refrigerant is evaporated and cooled in the refrigerant-water heat exchange device 6, the heat exchange between the refrigerant and the water is carried out with the circulating air-conditioning water flowing into the refrigerant-water heat exchange device 6 from the radiant heating and cooling end device 16, the heat exchange between the refrigerant and the water is carried out in a refrigerant-water heat exchange device 6 to generate high-temperature chilled water with adjustable water temperature, the temperature is 16 ℃ to 26 ℃, and a radiation heating and cooling end device 16 is provided through the water outlet 8 to perform radiation cooling and temperature reduction indoors. The refrigerant flowing out of the refrigerant-water heat exchange device 6 is reversed by the four-way valve 4 and then directly flows into the host variable frequency compressor 1 through the compressor air suction port 3, so that the task of providing high-temperature chilled water for the radiation heat supply refrigeration end device 16 by the refrigerant-water heat exchange device 6 in summer is completed; when the dehumidification control module detects that the indoor temperature and humidity parameters exceed the threshold range, the other path of the refrigerant enters a plurality of variable frequency dehumidifier indoor units through the stop valve 9, the refrigerant is subjected to evaporation cooling after being throttled by electronic expansion valve throttling elements in the variable frequency dehumidification indoor units, so that the temperature of heat exchange fins of the variable frequency dehumidification indoor units is reduced, indoor air flowing into the variable frequency dehumidification indoor units from the air inlet 11 or fresh air needing to enter the room flows out from the air outlet 12 after passing through the heat exchange fins, and water in the air is condensed into condensed water on the heat exchange fins to be discharged, so that the aim of dehumidifying the air is fulfilled. The refrigerant flowing out of the frequency conversion dehumidification indoor unit directly flows into the host frequency conversion compressor 1 through the compressor air suction port 3, independent dehumidification operation circulation of the frequency conversion dehumidification indoor unit in a refrigeration operation mode is completed, and in the dehumidification process, a fan in the frequency conversion dehumidification indoor unit blows out cold air, so that the indoor cooling effect is further achieved, and the energy-saving effect is fully embodied.
During winter heating operation, the amount of the refrigerant flowing through the refrigerant-water heat exchange device 6 is equal to the sum of the amount of the refrigerant flowing through the outdoor air side heat exchange device 5 and the amount of the refrigerant flowing through the variable-frequency dehumidification indoor units; during the cooling operation in summer, the amount of the refrigerant flowing through the outdoor air side heat exchange device 5 is equal to the sum of the amount of the refrigerant flowing through the refrigerant-water heat exchange device 6 and the amount of the refrigerant flowing through the variable-frequency dehumidification indoor units.
When each independent frequency conversion dehumidification indoor unit operates, the temperature and humidity parameters of indoor air are acquired by the temperature and humidity sensor and transmitted to the microcontroller for analysis and calculation to obtain a control instruction, on one hand, the opening degree of an electronic expansion valve throttling element of the frequency conversion dehumidification indoor unit is driven and controlled, the quantity of refrigerants flowing into the frequency conversion dehumidification indoor unit is controlled, and the purpose of controlling the air humidity is achieved by controlling the evaporation quantity of the refrigerants; on the other hand, the rotating speed of a fan motor is controlled through a fan frequency converter of the frequency conversion dehumidification indoor unit, and the dehumidification air volume is controlled.
The utility model discloses a frequency conversion allies oneself with radiation heating refrigeration air conditioning system and operation method more, humiture independent control, the controllable hot and cold water of required temperature of radiation heating refrigeration system can independently be solved to this system to can solve the dehumidification demand of the difference in every independent space simultaneously. The refrigerant-water heat exchange device 6 meets the requirements of heating in winter and refrigerating in summer, the refrigerant-air heat exchange dehumidifier 10 adjusts the humidity of indoor air, the refrigerant-air heat exchange dehumidifier 10 in each independent space can evaporate, freeze and dehumidify independent refrigerants, the dehumidification capacity is high, the dehumidification efficiency is high, the dehumidification space range is flexible and controllable, and the effects of high comfort level, high efficiency and energy conservation are really realized.
The above-mentioned embodiments further explain in detail the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the embodiments of the present invention, and are not intended to limit the scope of the present invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims (4)

1. The utility model provides a frequency conversion allies oneself with radiation heating refrigeration air conditioning system more, includes frequency conversion air source heat pump air conditioning system and refrigerant-air heat transfer dehydrating unit (10), its characterized in that: the variable frequency air source heat pump air-conditioning system comprises a host variable frequency compressor (1), a four-way valve (4), an outdoor air side heat exchange device (5) and a refrigerant-water heat exchange device (6), wherein the host variable frequency compressor (1) is connected with one end of the outdoor air side heat exchange device (5) and one end of the refrigerant-water heat exchange device (6) through the four-way valve (4), the refrigerant-air heat exchange and dehumidification devices (10) are connected in parallel, each end of each refrigerant-air heat exchange and dehumidification device (10) is connected with the other end of the host variable frequency compressor (1), the outdoor air side heat exchange device (5) and the other end of the refrigerant-water heat exchange device (6) through refrigerant connecting copper pipes, and the refrigerant-water heat exchange device (6) is externally connected with a radiation heat supply and refrigeration terminal device (16).
2. A variable-frequency multi-connected radiant heating and cooling air conditioning system as claimed in claim 1, wherein: each refrigerant-air heat exchange dehumidifying device (10) is provided with a dehumidifying control module, the dehumidifying control module comprises a microprocessor and a temperature and humidity sensor connected with the microprocessor, the temperature and humidity sensor is used for detecting indoor temperature and humidity parameters and transmitting the indoor temperature and humidity parameters to the microprocessor for analysis, calculation and processing, and when the indoor temperature and humidity parameters exceed the range of a preset temperature and humidity threshold value of the microprocessor, the microprocessor automatically controls the refrigerant-air heat exchange dehumidifying device (10) to be opened.
3. A variable-frequency multi-connected radiant heating and cooling air conditioning system as claimed in claim 1, wherein: the main machine variable frequency compressor (1) is provided with a compressor exhaust port (2) and a compressor suction port (3), the upper part of the four-way valve (4) is connected with the compressor exhaust port (2) through an interface, the right side of the four-way valve is connected with an outdoor air side heat exchange device (5) through an interface, the left side of the four-way valve is connected with a refrigerant-water heat exchange device (6), and the lower part of the four-way valve is connected with.
4. A variable-frequency multi-connected radiant heating and cooling air conditioning system as claimed in claim 3, wherein: the refrigerant-water heat exchange device (6) is a cold and hot water module, and the refrigerant-air heat exchange dehumidification device (10) is a variable-frequency dehumidification indoor unit.
CN201920107710.2U 2019-01-22 2019-01-22 Variable-frequency multi-connected radiation heating and refrigerating air conditioning system Active CN209819742U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920107710.2U CN209819742U (en) 2019-01-22 2019-01-22 Variable-frequency multi-connected radiation heating and refrigerating air conditioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920107710.2U CN209819742U (en) 2019-01-22 2019-01-22 Variable-frequency multi-connected radiation heating and refrigerating air conditioning system

Publications (1)

Publication Number Publication Date
CN209819742U true CN209819742U (en) 2019-12-20

Family

ID=68871744

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920107710.2U Active CN209819742U (en) 2019-01-22 2019-01-22 Variable-frequency multi-connected radiation heating and refrigerating air conditioning system

Country Status (1)

Country Link
CN (1) CN209819742U (en)

Similar Documents

Publication Publication Date Title
WO2016179884A1 (en) Variable-refrigerant-flow radiant air-conditioning system
CN201652636U (en) Double-cold-source heat recovery constant temperature and humidity air conditioning unit
CN110748969A (en) Air conditioning system and control method thereof
CN101294755A (en) Air-conditioning unit with constant temperature and humidity
CN105066256A (en) Air conditioner indoor unit
CN108679870A (en) A kind of warm and humid sub-control air-conditioning system with Fresh air handing function
CN207035387U (en) A kind of multifunctional split-type fresh air air conditioner for machine
CN108679869A (en) A kind of complete straight swollen warm and humid sub-control air-conditioning system of type of list refrigerant circuit
CN101216225A (en) Double temperature cold water/cold air unit
CN201293409Y (en) Fresh air handling unit
CN211146705U (en) Air conditioning system
CN209819742U (en) Variable-frequency multi-connected radiation heating and refrigerating air conditioning system
CN203757891U (en) Direct-evaporation air cooling type fresh air handling unit
CN208936579U (en) A kind of fresh air conditioner system of independent temperature-humidity control
JP4376285B2 (en) Mixed air conditioner
CN109780640A (en) A kind of connected radiant heating refrigerated air-conditioning system and operation method
CN206709326U (en) Family formula constant temperature and humidity air-conditioning system based on double low-temperature receiver heat-recovery dehumidification fresh airs
CN206338878U (en) The warm and humid separation control device of double control of low-temperature receiver three
CN109506311A (en) A kind of double cold source humiture independence control air conditioner systems of superposition type
CN204806546U (en) Warm system of air source heat pump roof radiation direct expansion cooling
CN109595705A (en) A kind of energy conservation swimming pool heat pump dehumidifier and its working method
CN102022788A (en) Combined cooling air-conditioning system of indirect evaporation chiller and mechanical refrigeration chiller
JP3614775B2 (en) Heat pump air conditioner
JP2007333377A (en) Heat pump type air conditioner
CN202024421U (en) Water-cooling refrigerant direct-expansion variable air volume air handling unit

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant