CN112082209A - Condensed water-free direct-expansion type air conditioning system with natural cooling function - Google Patents

Condensed water-free direct-expansion type air conditioning system with natural cooling function Download PDF

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Publication number
CN112082209A
CN112082209A CN202011023065.XA CN202011023065A CN112082209A CN 112082209 A CN112082209 A CN 112082209A CN 202011023065 A CN202011023065 A CN 202011023065A CN 112082209 A CN112082209 A CN 112082209A
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China
Prior art keywords
air
valve
natural cooling
processing system
air circulation
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CN202011023065.XA
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Chinese (zh)
Inventor
王光
曾仲国
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Kuenling Refrigeration Machinery Suzhou Co ltd
Kuenling Machinery Refrigerating Shanghai Co ltd
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Kuenling Refrigeration Machinery Suzhou Co ltd
Kuenling Machinery Refrigerating Shanghai Co ltd
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Priority to CN202011023065.XA priority Critical patent/CN112082209A/en
Publication of CN112082209A publication Critical patent/CN112082209A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0083—Indoor units, e.g. fan coil units with dehumidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a non-condensed water direct-expansion air conditioning system with a natural cooling function, which comprises a box body, a user side air circulation processing system, a non-user side air circulation processing system and a heat exchanger, wherein the user side air circulation processing system, the non-user side air circulation processing system and the heat exchanger are arranged in the box body; and the automatic control system is electrically connected with the air circulation processing system so as to control the air circulation processing system to switch between a natural cooling mode and an active cooling mode. The invention rarely separates out condensed water in the using process, can freely switch between a natural cooling mode and an active cooling mode according to the environmental temperature, not only greatly reduces the energy consumption required by dehumidification and effectively reduces the cost, but also can adapt to various environments and is more flexible to operate.

Description

Condensed water-free direct-expansion type air conditioning system with natural cooling function
Technical Field
The invention relates to the field of air conditioner refrigeration, in particular to a non-condensed water direct-expansion type air conditioning system with a natural cooling function.
Background
With the development of national economy, the air conditioning refrigeration technology is widely applied to a plurality of industry fields. In most air conditioner use occasions, when air temperature is reduced by using air conditioning equipment, dehumidification is often carried out, namely, condensed water is separated out from air, the reason is that the working temperature of the finned heat exchanger on the air treatment side is far lower than the dew point temperature of the air no matter the medium in the finned heat exchanger is refrigerant or air conditioning cold water, so that water vapor in the air is condensed into liquid water to be separated out. According to the principle of air conditioning, latent heat exchange characterized by liquid water precipitation accounts for most of the heat exchange capacity of air, and sensible heat exchange characterized by temperature reduction accounts for a small part of the heat exchange capacity of air, so that the dehumidification process actually accounts for most of the power consumption of air conditioning equipment.
However, in some special industries, the application scenario features that mainly the air temperature is reduced without dehumidification, for example, in a large data center, a large number of servers run to emit a large amount of heat, and at this time, only cooling is needed without dehumidification. In addition, in the grain storage warehouse, an air conditioner is needed to maintain the temperature of the grain warehouse, the air conditioner is mainly used for cooling, if common air conditioning equipment which is used for dehumidification and occupies most of heat exchange is adopted, dehumidification leads to excessive drying of grains, economic loss is brought to grain storage enterprises, a large amount of electric power is consumed, and using cost is increased.
Therefore, in such special fields, the conventional air conditioning technology and equipment are not suitable, so that the use requirements of users cannot be met, and the energy consumption is extremely high. One scheme is that the tail end of an air conditioning box which takes water with the temperature higher than the dew point temperature of air as secondary refrigerant is used for reducing the air temperature, and a high-temperature cold water main machine is used for continuously providing cold water. However, the water machine adopted in the scheme has the disadvantages of large construction work amount, high engineering cost and insufficient flexibility in use.
Disclosure of Invention
One object of the present invention is to provide a non-condensed water direct-expansion air conditioning system with a natural cooling function, wherein condensed water is rarely separated out during the use of the direct-expansion air conditioning system, so that energy consumption for dehumidification is greatly reduced, and cost is effectively reduced.
Another object of the present invention is to provide a non-condensed water direct-expansion type air conditioning system with a natural cooling function, wherein the direct-expansion type air conditioning system has two operating modes, can be set according to different environmental temperatures, and has high adaptability.
Another object of the present invention is to provide a non-condensed water direct-expansion type air conditioning system with a natural cooling function, wherein the direct-expansion type air conditioning system can exchange heat with cold air in a natural environment, thereby effectively reducing energy consumption.
Another object of the present invention is to provide a non-condensed water direct-expansion type air conditioning system with natural cooling function, wherein the installation and operation of the direct-expansion type air conditioning system are flexible, the cost of a single machine is low, and the operation is also energy-saving.
In order to achieve at least one of the above objects, the present invention provides a non-condensed water direct-expansion type air conditioning system with natural cooling function, including: the air circulation treatment system comprises a box body, and a user side air circulation treatment system, a non-user side air circulation treatment system and a heat exchanger which are arranged in the box body, wherein the heat exchanger is arranged between the user side air circulation treatment system and the non-user side air circulation treatment system so as to exchange heat between the two systems; and the automatic control system is electrically connected with the air circulation processing system so as to control the air circulation processing system to switch between a natural cooling mode and an active cooling mode.
In one embodiment, the user side air circulation treatment system comprises a first air inlet valve, a first circulating fan and a blast opening, indoor air enters the box body through the first air inlet valve, flows through the heat exchanger, is sucked in through the first circulating fan and is discharged from the blast opening.
In one embodiment, the non-user-side air circulation processing system comprises a second air inlet valve, a second circulation fan, an exhaust valve and an air supply channel arranged between the second circulation fan and the exhaust valve, and the automatic control system is electrically connected with the second air inlet valve and the exhaust valve to control the opening ratio of the second air inlet valve and the exhaust valve; when direct-expansion air conditioning system is in the natural cooling mode, automated control system opens the second air inlet valve with the exhaust valve, ambient air accessible the second air inlet valve gets into the box flows through the heat exchanger with user side air cycle processing system's air heat exchange back, the warp second circulating fan inhales and passes through the air supply passageway is followed the exhaust valve is discharged.
In one embodiment, the non-user-side air circulation processing system further comprises a compressor refrigeration system, the compressor refrigeration system is arranged between the heat exchanger and the second circulating fan to actively refrigerate air, and the automatic control system is electrically connected with the compressor refrigeration system to control the on-off of the compressor refrigeration system; when the direct-expansion air conditioning system is in an active refrigeration mode, the automatic control system closes the second air inlet valve and the second air outlet valve and starts the compressor refrigeration system, and the actively refrigerated air is subjected to cross heat exchange with the air in the user-side air circulation processing system in the heat exchanger.
In one embodiment, a mixing air valve is further arranged in the non-user side air circulation processing system, and the automatic control system is electrically connected with the mixing air valve to control the opening ratio of the mixing air valve.
In one embodiment, a flow equalizing plate is further arranged between the air supply channel and the exhaust valve.
In one embodiment, the compressor refrigeration system comprises an evaporator, a gas-liquid separator, a compressor, and a condenser; the evaporator stores a gas-liquid mixed refrigerant, the gas-liquid mixed refrigerant exchanges heat with hot air and then enters the compressor through the gas-liquid separator in the form of hot gas to be compressed, and then enters the condenser to be condensed into a liquid refrigerant to flow back to the evaporator.
In one embodiment, an electromagnetic valve, a filter and a throttle expansion valve are further disposed between the condenser and the evaporator, and the liquid refrigerant passes through the electromagnetic valve, the filter and the throttle expansion valve in sequence, and is changed into a low-temperature low-pressure gas-liquid mixed refrigerant again to return to the evaporator.
In one embodiment, the automated control system includes a controller for controlling the air circulation treatment system, a display for displaying operating parameters of the direct-expansion air conditioning system, and temperature sensors distributed in the air circulation treatment system and on the ambient side.
In one embodiment, the first circulating fan and the second circulating fan are both variable frequency motors.
Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.
Drawings
These and/or other aspects of the present invention will become more apparent and more readily appreciated from the following detailed description of the embodiments of the invention, taken in conjunction with the accompanying drawings of which:
fig. 1 illustrates a schematic view of the structure and operation of a direct-expansion type air conditioning system according to an embodiment of the present invention.
Fig. 2 illustrates a schematic view of a winter natural cooling operation principle of a direct-expansion type air conditioning system according to an embodiment of the present invention.
Fig. 3 illustrates a schematic view of an operation principle of a direct-expansion type air conditioning system in winter extreme low temperature natural cooling according to an embodiment of the present invention.
Fig. 4 illustrates a schematic diagram of a summer active cooling operation principle of the direct-expansion type air conditioning system according to an embodiment of the present invention.
In the figure:
1-direct expansion type air conditioning system; 10-an air circulation treatment system; 11-a box body; 12-a user side air circulation treatment system; 121-a first air inlet valve; 122-first circulation fan; 123-air supply outlet; 13-non-user side air circulation treatment system; 131-a second air inlet valve; 132-a second recycle blower; 133-exhaust valve; 134-air supply channel; 135-mixed air valve; 136-flow equalizing plate; 30-a compressor refrigeration system; 31-an evaporator; 32-a gas-liquid separator; 33-a compressor; 34-a condenser; 35-a solenoid valve; 36-a filter; 37-a throttle expansion valve; 14-a heat exchanger; 20-an automated control system; 21-a controller; 22-display.
Detailed Description
The terms and words used in the following specification and claims are not limited to the literal meanings, but are used only by the inventors to enable a clear and consistent understanding of the invention. Accordingly, it will be apparent to those skilled in the art that the following descriptions of the various embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
While ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited herein. The term is used only to distinguish one element from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the teachings of the inventive concepts. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.
As shown in fig. 1 to 4, a condensation-free direct-expansion type air conditioning system with a natural cooling function is illustrated. The direct-expansion air conditioning system 1 comprises an air circulation processing system 10 and an automatic control system 20, wherein the air circulation processing system 10 is used for achieving a refrigeration function, and the automatic control system 20 is electrically connected with the air circulation processing system 10 and used for controlling the operation of the air circulation processing system. The air circulation processing system 10 comprises a box 11, and a user side air circulation processing system 12, a non-user side air circulation processing system 13 and a heat exchanger 14 which are arranged in the box 11, wherein the heat exchanger 14 is arranged between the user side air circulation processing system 12 and the non-user side air circulation processing system 13 so as to exchange heat between the two systems; in other words, the heat exchanger 13 can exchange heat between the cold air at the non-user side and the high-temperature air at the user side, so as to achieve the cooling effect, and since the temperature of the cold air at the non-user side is higher than the dew-point temperature of the air at the user side, no condensed water is precipitated, and the direct-expansion air conditioning system 1 does not need to consume a large amount of power on dehumidification, so that the system saves more energy in the using process, effectively reduces consumption and reduces cost.
Specifically, as shown in fig. 1, the box 11 is divided into seven spaces, the user-side air circulation system 12 includes a first air inlet valve 121, a first circulation fan 122, and a supply-air outlet 123, the first air inlet valve 121 is disposed on the space B, and the first circulation fan 122 and the supply-air outlet 123 are located in the space F; when the air conditioner runs, the first air inlet valve 121 is always opened, the first circulating fan 122 is started, indoor air with higher temperature at the user use side is sucked into the space B through the first air inlet valve 121, enters the heat exchanger 14, enters the space F after exchanging heat with air at the non-use side with lower temperature in the heat exchanger 14, is sucked through the first circulating fan 122, and is sent to the user indoor through the air supply opening 123 for use.
More specifically, the non-user-side air circulation processing system 13 includes a second air inlet valve 131, a second circulation fan 132, an air outlet valve 133 and an air supply channel 134 disposed between the second circulation fan 132 and the air outlet valve 133, the automatic control system 20 can control the opening ratio of the second air inlet valve 131 and the air outlet valve 133, the second circulation fan 131 is disposed in the space a and is communicated with the air supply channel 134 disposed in the space B and connecting the space a and the space C, and the second circulation fan 132 and the first circulation fan 122 are synchronously started to circulate air in the non-user-side air circulation processing system 13, so that air on both sides is heat exchanged in the heat exchanger 14.
Further, the non-user-side air circulation processing system 13 further includes a compressor refrigeration system 30 and a mixed air valve 135 disposed in the space D, the compressor refrigeration system 30 is disposed in the space E between the heat exchanger 14 and the second circulating fan 131 to actively refrigerate air, and the automatic control system 20 can control the opening and closing of the compressor refrigeration system 30 and the opening ratio of the mixed air valve 135.
Preferably, the air circulation handling system 10 has a free cooling mode and an active cooling mode, and the automated control system 20 may control the air circulation handling system 10 to switch between the two modes; the automatic control system 20 includes a controller 21 for controlling the air circulation processing system 10, a display 22 for displaying the operation parameters of the direct-expansion air conditioning system, and a temperature sensor (not shown) distributed in the air circulation processing system 10 and on the environment side, and switches to a corresponding mode by detecting the outdoor environment temperature to compare with the temperature set by the user in the room. The specific working modes are as follows:
a natural cooling mode: the automatic control system 20 detects and compares the ambient temperature and the indoor set temperature, when the ambient temperature is far less than the indoor set temperature, the natural cooling mode is started, the controller 21 controls the second air inlet valve 131 and the exhaust valve 133 to be opened, and the mixed air valve 135 is closed.
As shown in fig. 2, the cold air in the natural environment is sucked by the operation of the second circulation fan 132, enters the space D of the box 11 from the second air inlet valve 131, passes through the heat exchanger 14 to exchange heat with the high temperature user side air, sequentially enters the space E, A, is sucked by the second circulation fan 132, is sent to the space C through the air supply passage 134, and is discharged to the natural environment through the air discharge valve 133. Preferably, a flow equalizing plate 136 is further disposed between the air supply channel 134 and the air exhaust valve 133.
During the whole operation, the compressor is not required to be started for active refrigeration 30, the cold air in the natural environment is used for cooling, only two circulating fans consume electric energy, and the energy consumption is greatly saved. Further, the first circulation fan 122 and the second circulation fan 132 may adopt variable frequency motors, and the automatic control system 20 controls the rotation speed to adjust the air volume, so as to reduce the fan operation frequency when the outside air temperature is lower and does not need too much cold air, thereby reducing the amount of cold air and consuming less power.
Further, when the temperature of the outside air is too low than that in the winter, even if the operation frequency of the second circulation fan 132 is minimized, as shown in fig. 3, the opening degrees of the second intake valve 132 and the exhaust valve 133 may be controlled to be reduced, and the mixing valve 135 may be opened in a certain ratio, in such a manner as to precisely control the supply air temperature.
An active cooling mode: the automatic control system 20 detects and compares the ambient temperature and the indoor set temperature, and switches to the active cooling mode when the ambient temperature is high and the natural cooling mode cannot reduce the air temperature on the user side.
As shown in fig. 4, the second air inlet valve 132 and the air outlet valve 133 are completely closed, and the mixed air valve 135 is completely opened, so as to control the compressor refrigeration system 30 to be opened, wherein the compressor refrigeration system 30 includes an evaporator 31, a gas-liquid separator 32, a compressor 33, a condenser 34, a solenoid valve 35, a filter 36, and a throttle expansion valve 37, the cooling fan and the solenoid valve 35 in the condenser 34 are synchronously opened, and the compressor refrigeration system 30 starts active cooling. The air on the non-user use side circulates in the space D, E, A, B, C of the cabinet 11, and after the heat exchange temperature is raised by the heat exchanger 14, the air can be reused by the cooling process of the evaporator 31, meanwhile, heat is transferred to the low-temperature and low-pressure gas-liquid mixed refrigerant in the evaporator 31, the gas-liquid mixed refrigerant absorbs heat and then enters the compressor 33 in the form of superheated gas after passing through the gas-liquid separator 32, the compressor 33 compresses a refrigerant into a high-temperature and high-pressure superheated gaseous refrigerant, which enters the condenser 34, transfers heat to the outdoor air forcibly circulated, so that the gaseous refrigerant is condensed into a high pressure liquid, and after passing through the solenoid valve 35 and the filter 36, the refrigerant is throttled and decompressed by the throttle expansion valve 37, and becomes a low-temperature and low-pressure gas-liquid mixed refrigerant again to enter the evaporator 31 for recycling.
In summary, compared with the conventional direct expansion air conditioner design scheme, the whole air treatment process of the present invention mainly reduces the heat, because the low temperature side cold air is recycled, if the space sealing performance of the box body 11 is excellent, the user side air and the outside air do not enter the low temperature side cold air, except that a small amount of condensed water is generated in the initial stage of operation, no condensed water is generated in other periods. The compressor not only meets the special use requirements of users, but also has lower load, can reduce the model specification and the running power of the compressor, and further reduces the product cost and the running cost.
In addition, through the air ventilation valve, in spring, autumn and winter, when the temperature of the natural environment is lower than the air temperature requirement of the user side, the cold air of the natural environment can be used for cooling the hot air of the user side, the compressor does not need to operate, only the air valve operates, and the use cost is further reduced.
When the temperature of the external cold air is further reduced, the rotating speed of the fan can be reduced through the frequency converter, the entering amount of the external cold air is reduced, and the running cost is lower.
Compared with a water system design scheme of a high-temperature water chilling unit and the tail end of an air conditioning box, the water system engineering cost is saved, the investment cost, the management cost and the like of a user are reduced, and the use and the operation are more flexible.
The basic principles of the present invention have been described above with reference to specific embodiments, but it should be noted that the advantages, effects, etc. mentioned in the present invention are only examples and are not limiting, and the advantages, effects, etc. must not be considered to be possessed by various embodiments of the present invention. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the invention is not limited to the specific details described above.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the invention to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

Claims (10)

1. The utility model provides a take no condensate water of natural cooling function to directly expand formula air conditioning system which characterized in that includes:
the air circulation treatment system comprises a box body, and a user side air circulation treatment system, a non-user side air circulation treatment system and a heat exchanger which are arranged in the box body, wherein the heat exchanger is arranged between the user side air circulation treatment system and the non-user side air circulation treatment system so as to exchange heat between the two systems; and
an automated control system electrically connected to the air circulation handling system to control the air circulation handling system to switch between a free cooling mode and an active cooling mode.
2. The non-condensed water direct-expansion type air conditioning system with natural cooling function as claimed in claim 1, wherein the user side air circulation processing system comprises a first air inlet valve, a first circulation fan and a supply outlet, indoor air enters the box body through the first air inlet valve, flows through the heat exchanger, is sucked in through the first circulation fan and is discharged from the supply outlet.
3. The non-condensed-water direct-expansion air conditioning system with natural cooling function as claimed in claim 2, wherein the non-user-side air circulation processing system comprises a second air inlet valve, a second circulation fan, an air outlet valve and an air supply channel arranged between the second circulation fan and the air outlet valve, and the automatic control system is electrically connected with the second air inlet valve and the air outlet valve to control the opening ratio of the second air inlet valve and the air outlet valve; when direct-expansion air conditioning system is in the natural cooling mode, automated control system opens the second air inlet valve with the exhaust valve, ambient air accessible the second air inlet valve gets into the box flows through the heat exchanger with user side air cycle processing system's air heat exchange back, the warp second circulating fan inhales and passes through the air supply passageway is followed the exhaust valve is discharged.
4. The non-condensed-water direct-expansion air conditioning system with natural cooling function as claimed in claim 3, wherein the non-user-side air circulation processing system further comprises a compressor refrigeration system, the compressor refrigeration system is arranged between the heat exchanger and the second circulation fan to actively refrigerate air, and the automatic control system is electrically connected with the compressor refrigeration system to control the on and off of the compressor refrigeration system; when the direct-expansion air conditioning system is in an active refrigeration mode, the automatic control system closes the second air inlet valve and the second air outlet valve and starts the compressor refrigeration system, and the actively refrigerated air is subjected to cross heat exchange with the air in the user-side air circulation processing system in the heat exchanger.
5. The non-condensed-water direct-expansion air conditioning system with natural cooling function as claimed in claim 3, wherein a mixed air valve is further arranged in the non-user-side air circulation processing system, and the automatic control system is electrically connected with the mixed air valve to control the opening ratio of the mixed air valve.
6. The non-condensed water direct-expansion type air conditioning system with natural cooling function as claimed in claim 3, wherein a flow equalizing plate is further provided between the air supply passage and the exhaust valve.
7. The non-condensed water direct-expansion type air conditioning system with natural cooling function as claimed in claim 4, wherein the compressor refrigeration system comprises an evaporator, a gas-liquid separator, a compressor and a condenser; the evaporator stores a gas-liquid mixed refrigerant, the gas-liquid mixed refrigerant exchanges heat with hot air and then enters the compressor through the gas-liquid separator in the form of hot gas to be compressed, and then enters the condenser to be condensed into a liquid refrigerant to flow back to the evaporator.
8. The non-condensed water direct-expansion air conditioning system with natural cooling function as claimed in claim 7, wherein an electromagnetic valve, a filter and a throttle expansion valve are further provided between the condenser and the evaporator, and the liquid refrigerant passes through the electromagnetic valve, the filter and the throttle expansion valve in sequence and is changed into a low-temperature low-pressure gas-liquid mixed refrigerant again to return to the evaporator.
9. The non-condensed water direct-expansion type air conditioning system with natural cooling function as claimed in claim 1, wherein the automatic control system comprises a controller for controlling the air circulation processing system, a display for displaying the operation parameters of the air circulation processing system, and temperature sensors distributed in the air circulation processing system and on the environment side.
10. The non-condensed water direct-expansion type air conditioning system with natural cooling function as claimed in claim 3, wherein the first circulating fan and the second circulating fan are both variable frequency motors, and the automatic control system controls the rotation speed to adjust the air volume.
CN202011023065.XA 2020-09-25 2020-09-25 Condensed water-free direct-expansion type air conditioning system with natural cooling function Pending CN112082209A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114484981A (en) * 2022-04-06 2022-05-13 山东优得生物科技有限公司 Biological sample energy-saving storage transfer equipment
CN115013955A (en) * 2022-05-26 2022-09-06 深圳市艾特网能技术有限公司 Natural cooling air conditioning system and control method for fan in natural cooling air conditioning system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114484981A (en) * 2022-04-06 2022-05-13 山东优得生物科技有限公司 Biological sample energy-saving storage transfer equipment
CN115013955A (en) * 2022-05-26 2022-09-06 深圳市艾特网能技术有限公司 Natural cooling air conditioning system and control method for fan in natural cooling air conditioning system
CN115013955B (en) * 2022-05-26 2023-04-14 深圳市艾特网能技术有限公司 Natural cooling air conditioning system and control method of fan in natural cooling air conditioning system

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