CN114963355B - Dehumidification temperature control system, operation control method, operation control device and storage medium - Google Patents

Dehumidification temperature control system, operation control method, operation control device and storage medium Download PDF

Info

Publication number
CN114963355B
CN114963355B CN202210777674.7A CN202210777674A CN114963355B CN 114963355 B CN114963355 B CN 114963355B CN 202210777674 A CN202210777674 A CN 202210777674A CN 114963355 B CN114963355 B CN 114963355B
Authority
CN
China
Prior art keywords
opening
reheater
ball valve
electric ball
preset
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
CN202210777674.7A
Other languages
Chinese (zh)
Other versions
CN114963355A (en
Inventor
许学飞
陶骙
李子风
刘艳涛
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.)
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
GD Midea Air Conditioning 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 GD Midea Air Conditioning Equipment Co Ltd filed Critical GD Midea Air Conditioning Equipment Co Ltd
Priority to CN202210777674.7A priority Critical patent/CN114963355B/en
Publication of CN114963355A publication Critical patent/CN114963355A/en
Application granted granted Critical
Publication of CN114963355B publication Critical patent/CN114963355B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-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
    • F24F3/12—Air-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
    • F24F3/14—Air-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
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/40—Vibration or noise prevention at outdoor units
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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

Landscapes

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

Abstract

The invention discloses a dehumidification temperature control system, an operation control method, an operation control device and a storage medium, wherein the dehumidification temperature control system comprises an inner machine, an outer machine and a controller, and the inner machine comprises an evaporator, a reheater and a reheating electronic expansion valve; the external machine comprises a compressor, a four-way valve, an outdoor heat exchanger, an electric ball valve and a first electromagnetic valve, wherein an exhaust port of the compressor is connected to the four-way valve through an exhaust pipe, the electric ball valve is arranged on the exhaust pipe, the outdoor heat exchanger is connected to a reheat electronic expansion valve and an evaporator through a liquid side connecting pipe, the four-way valve is also connected to the evaporator through an air side connecting pipe, an exhaust port of the compressor is also connected to the reheater through a high-low pressure connecting pipe, and the first electromagnetic valve is arranged on the high-low pressure connecting pipe; the controller is used for controlling the opening degree of the electric ball valve in the dehumidifying and reheating mode. The refrigerant flow rate adjusting flexibility can be improved, the risk of short circuit of the system electric control board is reduced, and the reliability of system operation is improved.

Description

Dehumidification temperature control system, operation control method, operation control device and storage medium
Technical Field
The present invention relates to the field of air conditioning technologies, and in particular, to a dehumidification temperature control system, an operation control method of the dehumidification temperature control system, an operation control device, an air conditioning system, and a computer readable storage medium.
Background
With the improvement of the living standard of people, the demands of people on living environment control are increasingly remarkable, particularly in humid and rainy areas and the seasons of the returning to the south, the air humidity is high, and the body feeling is uncomfortable, so that the functions of the air conditioner are gradually developed from single temperature regulation to diversified, and the dehumidifying and temperature controlling air conditioner is generated. The existing dehumidification temperature control system is characterized in that two heat exchangers are arranged in an air duct of an inner machine, and the heat exchanger arranged in front is used for cooling and dehumidifying circulating air by evaporating and absorbing heat in a low-temperature refrigerant which is provided by an outer machine and is condensed, throttled and depressurized; the heat exchanger arranged at the back is used for providing high-temperature exhaust refrigerant for condensing and releasing heat in the heat exchanger by the external machine and reheating and heating the dehumidified air.
The electromagnetic valve on the exhaust pipe of the current dehumidification temperature control system can only realize the switching function and can not realize the quantity control of refrigerant flow, so that the adjustment range of the dehumidification and reheating functions of the air conditioner is smaller; and the heat exchange is generally regulated through an electronic expansion valve of an external machine, so that the temperature of a pipe entering a refrigerant for heat dissipation is often too low, condensation is caused at the position, and hidden danger of damp short circuit of an electric control plate exists.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a dehumidification temperature control system, an operation control method of the dehumidification temperature control system, an operation control device, an air conditioning system and a computer readable storage medium, which can improve the adjustment flexibility of the flow of a refrigerant, reduce the risk of short circuit of an electric control board of the system and improve the reliability of the system.
In a first aspect, an embodiment of the present invention provides a dehumidification and temperature control system, including an internal unit, an external unit, and a controller, where:
the internal machine comprises an evaporator for cooling and dehumidifying, a reheater for reheating and heating and a reheating electronic expansion valve connected with the reheater;
the external machine comprises a compressor, a four-way valve, an outdoor heat exchanger, an electric ball valve and a first electromagnetic valve, wherein an exhaust port of the compressor is connected to the four-way valve through an exhaust pipe, the electric ball valve is arranged on the exhaust pipe, the four-way valve is connected to the outdoor heat exchanger, the outdoor heat exchanger is connected to the reheating electronic expansion valve and the evaporator through a liquid side connecting pipe, the four-way valve is also connected to the evaporator through a gas side connecting pipe, an exhaust port of the compressor is also connected to the reheater through a high-low pressure connecting pipe, and the first electromagnetic valve is arranged on the high-low pressure connecting pipe;
And the controller is used for controlling the opening of the electric ball valve according to the opening of the reheating electronic expansion valve, the indoor temperature and the supercooling degree of the reheater under the dehumidification reheating mode.
The dehumidification temperature control system provided by the embodiment of the invention has at least the following beneficial effects: through the blast pipe setting up electric ball valve between the gas vent of compressor and four-way valve, replace original solenoid valve, can adjust refrigerant flow through the aperture of control electric ball valve, improve refrigerant flow's regulation flexibility ratio, need not to adjust refrigerant flow through the electronic expansion valve of outer machine, avoided the condensation condition that the electronic expansion valve of outer machine was adjusted probably to produce, reduce the risk of system electric control board short circuit, improve the reliable degree of system work.
In the above dehumidification temperature control system, the controlling the opening of the electric ball valve according to the opening of the reheat electronic expansion valve, the indoor temperature and the reheater supercooling degree includes:
when the opening of the reheating electronic expansion valve is smaller than a first preset opening, controlling the opening of the electric ball valve to be adjusted to the maximum opening;
And when the opening of the reheating electronic expansion valve is larger than or equal to a first preset opening, controlling the opening of the electric ball valve according to the indoor temperature and the supercooling degree of the reheater.
When the opening of the reheating electronic expansion valve is smaller than the first preset opening, the internal machine is not required to be reheated, so that the opening of the electric ball valve is adjusted to the maximum opening, and the external machine bears the maximum heating capacity at the moment; when the opening of the reheating electronic expansion valve is larger than or equal to the first preset opening, the fact that the inner machine needs reheating and the outer machine needs to be matched and adjusted is indicated, and the opening of the electric ball valve is controlled according to the indoor temperature and the supercooling degree of the reheater, so that the air outlet temperature of the inner machine is effectively controlled.
In the above dehumidification temperature control system, the controlling the opening of the electric ball valve according to the indoor temperature and the supercooling degree of the reheater includes:
when the indoor temperature is greater than the sum of the set temperature and the preset temperature compensation value, controlling the opening of the electric ball valve to be adjusted to the heating minimum opening;
when the indoor temperature is greater than the set temperature and is less than or equal to the sum of the set temperature and a preset temperature compensation value, controlling the electric ball valve to keep the current opening;
And when the indoor temperature is less than or equal to the set temperature, controlling the opening of the electric ball valve according to the supercooling degree of the reheater.
When the indoor temperature is higher than the sum of the set temperature and the preset temperature compensation value, the current indoor temperature is higher than the set temperature, the opening of the electric ball valve is adjusted to the heating minimum opening, the air outlet temperature of the internal machine is relatively reduced, and the requirement of the indoor temperature can be met; when the indoor temperature is larger than the set temperature and smaller than or equal to the sum of the set temperature and the preset temperature compensation value, the current indoor temperature is in a proper range, and the air outlet temperature of the internal machine is not required to be adjusted; when the indoor temperature is smaller than or equal to the set temperature, the indoor temperature does not reach the temperature required by the user, at the moment, not only the air outlet temperature needs to be guaranteed to be improved, but also the operation noise value needs to be considered, and through a large amount of practical verification, when the supercooling degree of the reheater is maintained in a preset supercooling degree range, the operation noise value and the air outlet temperature can be considered, so that the opening degree of the electric ball valve needs to be controlled according to the supercooling degree of the reheater.
In the above dehumidification temperature control system, the controlling the opening of the electric ball valve according to the reheater supercooling degree includes:
when the supercooling degree of the reheater falls into a preset supercooling degree range, controlling the opening of the movable ball valve to be adjusted to a first preset opening or keeping the current opening;
When the supercooling degree of the reheater is larger than or equal to the upper limit value of the range of the preset supercooling degree, reducing the opening of the electric ball valve on the basis of the first preset opening;
and when the supercooling degree of the reheater is smaller than or equal to the lower limit value of the range of the preset supercooling degree, increasing the opening of the electric ball valve on the basis of the first preset opening.
When the supercooling degree of the reheater is larger than or equal to the upper limit value of the range of the preset supercooling degree, the opening degree of the electric ball valve is reduced on the basis of the first preset opening degree, so that the supercooling degree of the reheater is reduced to a certain extent, and the supercooling degree falls into the range of the preset supercooling degree; similarly, when the supercooling degree of the reheater is smaller than or equal to the lower limit value of the range of the preset supercooling degree, the opening degree of the electric ball valve is increased on the basis of the first preset opening degree, so that the supercooling degree of the reheater can be increased to a certain degree, and the reheater falls into the range of the preset supercooling degree.
In the dehumidification temperature control system, the opening degree of the reduced electric ball valve is C-C/A, wherein: c is a first preset opening degree, and A is a preset constant.
In the dehumidification temperature control system, the opening degree of the electric ball valve after being increased is C+C/A, wherein: c is a first preset opening degree, and A is a preset constant.
In a second aspect, an embodiment of the present invention provides an operation control method of a dehumidification temperature control system, where the dehumidification temperature control system includes an internal machine and an external machine, the internal machine includes an evaporator for cooling and dehumidifying, a reheater for reheating and heating, and a reheat electronic expansion valve connected to the reheater; the external machine comprises a compressor, a four-way valve, an outdoor heat exchanger, an electric ball valve and a first electromagnetic valve, wherein an exhaust port of the compressor is connected to the four-way valve through an exhaust pipe, the electric ball valve is arranged on the exhaust pipe, the four-way valve is connected to the outdoor heat exchanger, the outdoor heat exchanger is connected to the reheating electronic expansion valve and the evaporator through a liquid side connecting pipe, the four-way valve is also connected to the evaporator through a gas side connecting pipe, an exhaust port of the compressor is also connected to the reheater through a high-low pressure connecting pipe, and the first electromagnetic valve is arranged on the high-low pressure connecting pipe; the method comprises the following steps:
and in the dehumidification reheating mode, controlling the opening of the electric ball valve according to the opening of the reheating electronic expansion valve, the indoor temperature and the supercooling degree of the reheater.
The operation control method of the dehumidification temperature control system provided by the embodiment of the invention has at least the following beneficial effects: through the blast pipe setting up electric ball valve between the gas vent of compressor and four-way valve, replace original solenoid valve, can adjust refrigerant flow through the aperture of control electric ball valve, improve refrigerant flow's regulation flexibility ratio, need not to adjust refrigerant flow through the electronic expansion valve of outer machine, avoided the condensation condition that the electronic expansion valve of outer machine was adjusted probably to produce, reduce the risk of system electric control board short circuit, improve the reliable degree of system work.
In the above method for controlling operation of a dehumidification and temperature control system, the controlling the opening of the electric ball valve according to the opening of the reheat electronic expansion valve, the indoor temperature and the reheater supercooling degree includes:
when the opening of the reheating electronic expansion valve is smaller than a first preset opening, controlling the opening of the electric ball valve to be adjusted to the maximum opening;
And when the opening of the reheating electronic expansion valve is larger than or equal to a first preset opening, controlling the opening of the electric ball valve according to the indoor temperature and the supercooling degree of the reheater.
When the opening of the reheating electronic expansion valve is smaller than the first preset opening, the internal machine is not required to be reheated, so that the opening of the electric ball valve is adjusted to the maximum opening, and the external machine bears the maximum heating capacity at the moment; when the opening of the reheating electronic expansion valve is larger than or equal to the first preset opening, the fact that the inner machine needs reheating and the outer machine needs to be matched and adjusted is indicated, and the opening of the electric ball valve is controlled according to the indoor temperature and the supercooling degree of the reheater, so that the air outlet temperature of the inner machine is effectively controlled.
In the above method for controlling operation of a dehumidification and temperature control system, the controlling the opening of the electric ball valve according to the indoor temperature and the supercooling degree of the reheater includes:
when the indoor temperature is greater than the sum of the set temperature and the preset temperature compensation value, controlling the opening of the electric ball valve to be adjusted to the heating minimum opening;
when the indoor temperature is greater than the set temperature and is less than or equal to the sum of the set temperature and a preset temperature compensation value, controlling the electric ball valve to keep the current opening;
And when the indoor temperature is less than or equal to the set temperature, controlling the opening of the electric ball valve according to the supercooling degree of the reheater.
When the indoor temperature is higher than the sum of the set temperature and the preset temperature compensation value, the current indoor temperature is higher than the set temperature, the opening of the electric ball valve is adjusted to the heating minimum opening, the air outlet temperature of the internal machine is relatively reduced, and the requirement of the indoor temperature can be met; when the indoor temperature is larger than the set temperature and smaller than or equal to the sum of the set temperature and the preset temperature compensation value, the current indoor temperature is in a proper range, and the air outlet temperature of the internal machine is not required to be adjusted; when the indoor temperature is smaller than or equal to the set temperature, the indoor temperature does not reach the temperature required by the user, at the moment, not only the air outlet temperature needs to be guaranteed to be improved, but also the operation noise value needs to be considered, and through a large amount of practical verification, when the supercooling degree of the reheater is maintained in a preset supercooling degree range, the operation noise value and the air outlet temperature can be considered, so that the opening degree of the electric ball valve needs to be controlled according to the supercooling degree of the reheater.
In the above method for controlling operation of a dehumidification and temperature control system, the controlling the opening of the electric ball valve according to the supercooling degree of the reheater includes:
when the supercooling degree of the reheater falls into a preset supercooling degree range, controlling the opening of the movable ball valve to be adjusted to a first preset opening or keeping the current opening;
When the supercooling degree of the reheater is larger than or equal to the upper limit value of the range of the preset supercooling degree, reducing the opening of the electric ball valve on the basis of the first preset opening;
and when the supercooling degree of the reheater is smaller than or equal to the lower limit value of the range of the preset supercooling degree, increasing the opening of the electric ball valve on the basis of the first preset opening.
When the supercooling degree of the reheater is larger than or equal to the upper limit value of the range of the preset supercooling degree, the opening degree of the electric ball valve is reduced on the basis of the first preset opening degree, so that the supercooling degree of the reheater is reduced to a certain extent, and the supercooling degree falls into the range of the preset supercooling degree; similarly, when the supercooling degree of the reheater is smaller than or equal to the lower limit value of the range of the preset supercooling degree, the opening degree of the electric ball valve is increased on the basis of the first preset opening degree, so that the supercooling degree of the reheater can be increased to a certain degree, and the reheater falls into the range of the preset supercooling degree.
In the operation control method of the dehumidification and temperature control system, the opening degree of the small electric ball valve is C-C/A, wherein: c is a first preset opening degree, and A is a preset constant.
In the operation control method of the dehumidification and temperature control system, the opening degree of the increased electric ball valve is C+C/A, wherein: c is a first preset opening degree, and A is a preset constant.
In a third aspect, an embodiment of the present invention provides an operation control apparatus, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor executes the program to implement the operation control method of the dehumidification and temperature control system according to the embodiment of the second aspect.
In a fourth aspect, an embodiment of the present invention provides an air conditioning system, including the operation control device according to the embodiment of the third aspect.
In a fifth aspect, embodiments of the present invention provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the operation control method of the dehumidification control temperature system according to the embodiment of the second aspect.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.
The invention is further described below with reference to the drawings and examples;
FIG. 1 is a schematic diagram of a dehumidifying temperature-control system according to an embodiment of the present invention;
FIG. 2 is a flowchart of an operation control method of the dehumidification control temperature system provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an operation control device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
It should be appreciated that in the description of embodiments of the present invention, the descriptions of "first," "second," etc. are for the purpose of distinguishing between technical features only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. "at least one" means one or more, and "a plurality" means two or more, greater than, less than, exceeding, etc., are understood to exclude the present number, and "a plurality" means one or more, unless specifically defined otherwise, above, below, within, etc., are understood to include the present number. And/or, describing the association relation of the association objects, indicates that three relations may exist, and it is understood that a and/or B may indicate that a exists alone, a exists together with B, and B exists alone. Wherein A, B may be singular or plural.
Furthermore, unless explicitly specified and limited otherwise, the term "coupled/connected" is to be interpreted broadly, as for example, being either fixedly coupled or movably coupled, being either detachably coupled or not detachably coupled, or being integrally coupled; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium. It should be noted that although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different from that in the flowchart.
The technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
With the improvement of the living standard of people, the demands of people on living environment control are increasingly remarkable, particularly in humid and rainy areas and the seasons of the returning to the south, the air humidity is high, and the body feeling is uncomfortable, so that the functions of the air conditioner are gradually developed from single temperature regulation to diversified, and the dehumidifying and temperature controlling air conditioner is generated. The existing dehumidification temperature control system is characterized in that two heat exchangers are arranged in an air duct of an inner machine, and the heat exchanger arranged in front is used for cooling and dehumidifying circulating air by evaporating and absorbing heat in a low-temperature refrigerant which is provided by an outer machine and is condensed, throttled and depressurized; the heat exchanger arranged at the back is used for providing high-temperature exhaust refrigerant for condensing and releasing heat in the heat exchanger by the external machine and reheating and heating the dehumidified air.
The electromagnetic valve on the exhaust pipe of the current dehumidification temperature control system can only realize the switching function and can not realize the quantity control of refrigerant flow, so that the adjustment range of the dehumidification and reheating functions of the air conditioner is smaller; and the heat exchange is generally regulated through an electronic expansion valve of an external machine, so that the temperature of a pipe entering a refrigerant for heat dissipation is often too low, condensation is caused at the position, and hidden danger of damp short circuit of an electric control plate exists.
The embodiment of the invention provides a dehumidification temperature control system, an operation control method and an operation control device of the dehumidification temperature control system, an air conditioning system and a computer readable storage medium, which can improve the adjustment flexibility of refrigerant flow, reduce the risk of short circuit of an electric control board of the system and improve the reliability of system operation.
Embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the first aspect of the present invention provides a dehumidifying temperature-control system, comprising an inner machine 100, an outer machine 200 and a controller (not shown in the drawings), wherein the inner machine 100 may be provided with a plurality of;
each internal machine 100 comprises an evaporator 101, an evaporator electronic expansion valve 102 connected with the evaporator 101, a reheater 103 and a reheater electronic expansion valve 104 connected with the reheater 103, wherein when the dehumidification and temperature control system operates in a dehumidification reheating mode, the front evaporator 101 is used for cooling and dehumidifying air, and the rear reheater 103 is used for reheating and heating dehumidified air; the reheating amount of the reheater 103 directly affects the air outlet temperature of the internal machine 100, so that reasonable adjustment of the reheating amount of the reheater 103 is beneficial to improving the air outlet temperature of the internal machine 100.
The outdoor unit 200 includes a compressor 201, a four-way valve 202, an outdoor heat exchanger 203, an electric ball valve 204, a first solenoid valve 205 and a second solenoid valve 206, wherein an exhaust port of the compressor 201 is connected to a first end of the four-way valve 202 through an exhaust pipe 207, the electric ball valve 204 is provided on the exhaust pipe 207, a second end of the four-way valve 202 is connected to the outdoor heat exchanger 203, the outdoor heat exchanger 203 is connected to the reheater electronic expansion valve 104 and the evaporator electronic expansion valve 102 through a liquid-side connecting pipe 208, a third end of the four-way valve 202 is connected to one ends of a gas-liquid separator 209 and the second solenoid valve 206, respectively, the gas-liquid separator 209 is connected to an intake port of the compressor 201, a fourth end of the four-way valve 202 is also connected to the evaporator electronic expansion valve 102 through a gas-side connecting pipe 210, the exhaust port of the compressor 201 is also connected to the reheater 103 through a high-low-pressure connecting pipe 211, the first solenoid valve 205 is provided on the high-low-pressure connecting pipe 211, and the other end of the second solenoid valve 206 is connected to the high-low-pressure connecting pipe 211.
In the dehumidification and reheating mode, the first solenoid valve 205 is opened, the second solenoid valve 206 is closed, the high-temperature and high-pressure refrigerant is discharged from the exhaust port of the compressor 201, flows to the first end of the four-way valve 202 through the exhaust pipe 207 and the electric ball valve 204, flows to the outdoor heat exchanger 203 from the second end of the four-way valve 202, passes through the outdoor heat exchanger 203, becomes a medium-temperature and high-pressure refrigerant, flows to the evaporator electronic expansion valve 102 of the inner machine 100 through the liquid side connecting pipe 208, passes through the evaporator electronic expansion valve 102, becomes a low-temperature and low-pressure refrigerant, flows through the evaporator 101, flows to the fourth end of the four-way valve 202 through the air side connecting pipe 210, flows to the air-liquid separator 209 from the third end of the four-way valve 202, and finally returns to the air inlet of the compressor 201; in addition, since the first solenoid valve 205 is opened, the high-temperature and high-pressure refrigerant discharged from the discharge port of the compressor 201 also flows through the first solenoid valve 205, then flows to the reheater 103 of the internal unit 100 through the high-low pressure connecting pipe 211, exchanges heat, becomes a medium-temperature and high-pressure refrigerant, then passes through the reheater electronic expansion valve 104, and then, after converging with the refrigerant from the liquid-side connecting pipe 208, flows to the evaporator electronic expansion valve 102.
The controller is used for controlling the opening of the electric ball valve 204 according to the opening of the reheater electronic expansion valve 104, the indoor temperature and the supercooling degree of the reheater in the dehumidification reheating mode.
In the dehumidification and temperature control system of the related art, the electric ball valve 204 is not arranged on the exhaust pipe 207, but an electromagnetic valve is adopted, and the electromagnetic valve can only realize the switching function and cannot realize the flow control function of the refrigerant, so that the adjustment range of humidity and temperature is smaller when the dehumidification and temperature control system operates in the dehumidification and reheat mode; the adjustment of the flow rate of the refrigerant can only be carried out through the electronic expansion valve of the external machine 200, but the temperature of the pipe for entering the refrigerant to dissipate heat is often too low, so that condensation occurs at the position, and hidden danger of damp short circuit of the electric control board exists; in addition, the capacity of the dehumidification temperature control system is large, the required refrigerant flow is large, and the working pressure difference of the electromagnetic valve is small, so that the application range is narrow, and the electromagnetic valve on the exhaust pipe 207 is also easily damaged by the impact of the refrigerant pressure.
According to the dehumidification temperature control system provided by the embodiment of the invention, the electric ball valve 204 is arranged on the exhaust pipe 207 between the exhaust port of the compressor 201 and the four-way valve 202, so that the original electromagnetic valve is replaced, the opening degree of the electric ball valve 204 is controlled to adjust the refrigerant flow, the adjustment flexibility of the refrigerant flow is improved, the refrigerant flow is not required to be adjusted through the electronic expansion valve of the external machine 200, the condensation condition possibly generated by the adjustment of the electronic expansion valve of the external machine 200 is avoided, the risk of short circuit of the system electric control board is reduced, and the reliability of the system operation is improved.
In addition, the temperature control of the dehumidification and temperature control system of the present embodiment mainly controls the supercooling degree Δt=t c-T2c of the reheater 103, where T c is the condensation temperature and T 2c is the reheater outlet temperature. The manner of performing temperature control includes a manner of directly changing the heat exchange amount of the reheater 103 and a manner of changing the heat exchange amount of the outdoor heat exchanger 203 so as to indirectly change the heat exchange amount of the reheater 103, wherein the manner of directly changing the heat exchange amount of the reheater 103 is mainly to adjust the opening degree of the electronic expansion valve 104 of the reheater, and the manner of changing the heat exchange amount of the outdoor heat exchanger 203 so as to indirectly change the heat exchange amount of the reheater 103 includes to adjust the opening degree of the electric ball valve 204 in the external machine, adjust the rotation speed of the external machine fan, and the like.
It can be understood that, relative to the electromagnetic valve, the electric ball valve 204 controls the flow by controlling the area of the blocked pipeline under the drive of the coil; according to different working conditions, the electric ball valve 204 can realize the states of full open, full close, small flow channel and large flow channel; the forward and reverse directions can be used; suitable refrigerants include R410A, R32, R22 and the like; the using pressure is between 0 and 10 MPa; the controller generates a rotating magnetic field by sending a pulse signal to the coil of the electric ball valve 204, cooperates with the rotor component to generate circular motion, and drives the ball core to rotate through gear reduction. Through controlling the coincidence degree of the flow hole of the ball core and the valve port, the flow area of the valve port is regulated, and finally the purpose of regulating the flow is achieved. Meanwhile, the stopper component controls the rotation angle of the valve core, so that the electric ball valve 204 is ensured to always run in 0-3200 pulse, the electric ball valve 204 has a full-closing function at the 0 pulse position, the electric ball valve 204 is fully opened by 3200 pulse, and the flow loss is close to that of a copper pipe with the same specification.
In the dehumidification and temperature control system shown in fig. 1, the controlling the opening of the electric ball valve 204 according to the opening of the electronic expansion valve 104 of the reheater, the indoor temperature and the supercooling degree of the reheater includes:
when the opening of the reheater electronic expansion valve 104 is smaller than the first preset opening, controlling the opening of the electric ball valve 204 to be adjusted to the maximum opening;
When the opening of the reheater electronic expansion valve 104 is greater than or equal to the first preset opening, the opening of the electric ball valve 204 is controlled according to the indoor temperature and the reheater supercooling degree.
It can be understood that the opening degree of the reheater electronic expansion valve 104 reflects whether the reheater 103 needs reheating, and when the opening degree of the reheater electronic expansion valve 104 is smaller than the first preset opening degree, it is indicated that the internal machine 100 does not need reheating, so that the opening degree of the electric ball valve 204 is adjusted to the maximum opening degree, and the external machine 200 bears the maximum heating amount at this time; when the opening of the electronic expansion valve 104 of the reheater is greater than or equal to the first preset opening, which indicates that the internal machine 100 needs to be reheated, the external machine 200 should be adjusted in a matching manner, and the opening of the electric ball valve 204 is controlled according to the indoor temperature and the supercooling degree of the reheater, so as to effectively control the air outlet temperature of the internal machine 100.
In the dehumidification and temperature control system shown in fig. 1, the controlling the opening of the electric ball valve 204 according to the indoor temperature and the subcooling degree of the reheater includes:
When the indoor temperature is greater than the sum of the set temperature and the preset temperature compensation value, controlling the opening of the electric ball valve 204 to be adjusted to the heating minimum opening;
when the indoor temperature is greater than the set temperature and is less than or equal to the sum of the set temperature and the preset temperature compensation value, controlling the electric ball valve 204 to keep the current opening;
and when the indoor temperature is less than or equal to the set temperature, controlling the opening of the electric ball valve 204 according to the supercooling degree of the reheater.
When the indoor temperature is greater than the sum of the set temperature and the preset temperature compensation value, the current indoor temperature is higher than the set temperature, the opening of the electric ball valve 204 is adjusted to the heating minimum opening, the air outlet temperature of the inner machine 100 is relatively reduced, and the indoor temperature can be ensured to meet the requirement; when the indoor temperature is greater than the set temperature and less than or equal to the sum of the set temperature and the preset temperature compensation value, the current indoor temperature is in a proper range, and the air outlet temperature of the internal machine 100 is not required to be adjusted, so that the electric ball valve 204 is controlled to keep the current opening unchanged; when the indoor temperature is less than or equal to the set temperature, which means that the indoor temperature does not reach the temperature required by the user at this time, not only the air outlet temperature needs to be guaranteed to be improved, but also the operation noise value needs to be considered, and through a great amount of practical verification, when the supercooling degree of the reheater is maintained in the preset supercooling degree range, the operation noise value and the air outlet temperature can be considered, so that the opening degree of the electric ball valve 204 needs to be controlled according to the supercooling degree of the reheater.
In the dehumidification and temperature control system shown in fig. 1, the controlling the opening of the electric ball valve 204 according to the reheater supercooling degree includes:
When the supercooling degree of the reheater falls into a preset supercooling degree range, controlling the opening of the movable ball valve to be adjusted to a first preset opening or keeping the current opening;
When the subcooling degree of the reheater is larger than or equal to the upper limit value of the preset subcooling degree range, reducing the opening degree of the electric ball valve 204 on the basis of the first preset opening degree;
when the reheater supercooling degree is less than or equal to the lower limit value of the preset supercooling degree range, the opening degree of the electric ball valve 204 is increased on the basis of the first preset opening degree.
When the supercooling degree of the reheater is greater than or equal to the upper limit value of the preset supercooling degree range, the opening degree of the electric ball valve 204 is reduced on the basis of the first preset opening degree, so that the supercooling degree of the reheater is reduced to a certain extent, and falls into the preset supercooling degree range; similarly, when the subcooling degree of the reheater is smaller than or equal to the lower limit value of the preset subcooling degree range, the opening degree of the electric ball valve 204 is increased on the basis of the first preset opening degree, so that the subcooling degree of the reheater is increased to a certain extent, and falls into the preset subcooling degree range.
In the dehumidification and temperature control system described above, the opening of the reduced electric ball valve 204 is c—c/a, where: c is a first preset opening degree, and A is a preset constant.
In the dehumidification and temperature control system described above, the opening degree of the increased electric ball valve 204 is c+c/a, where: c is a first preset opening degree, and A is a preset constant.
The following describes the control of the electrically operated ball valve 204 in a dehumidification reheat mode for the dehumidification control system of FIG. 1 in a detailed embodiment. The opening of the electric ball valve 204 on the exhaust pipe 207 between the compressor 201 of the outer unit 200 and the four-way valve 202 determines the distribution of the refrigerant flow rates of the inner unit 100 and the outer unit 200, so that the distribution of the refrigerant flow rate can be reasonably adjusted by using the opening of the electric ball valve 204, the condensation heat dissipation capacity of the outdoor heat exchanger 203 of the outer unit 200 can be reduced, the heat dissipation capacity of the reheater 103 of the inner unit 100 can be increased, and the air outlet temperature of the inner unit can be controlled. Specifically: i) If the opening of the reheater electronic expansion valve 104 is smaller than a certain value, it is indicated that the internal machine 100 does not need reheating, and the external machine 200 should bear the maximum heating amount, so that the opening of the electric ball valve 204 of the external machine 200 is kept the maximum; ii) if the opening of the reheater electronic expansion valve 104 is greater than a certain value, which indicates that the inner machine 100 needs reheating, the outer machine 200 should be adjusted in a matching way, and the opening of the electric ball valve 204 is controlled as follows:
wherein f 204 is the opening of the electric ball valve 204, a is the heating minimum opening, T1 is the indoor temperature, ts is the set temperature, and f 1 is the opening adjusting function of the electric ball valve 204 when the indoor temperature does not reach the set temperature; f 2 indicates that the opening of the electrically operated ball valve 204 remains unchanged. The opening degree adjustment function f 1 is a function taking the reheater supercooling degree T c-T2c as a control variable, and specifically includes:
It can be seen that when the reheater supercooling degree T c-T2c falls within the preset supercooling degree range, the opening degree of the electric ball valve 204 is set to a constant value, and when the reheater supercooling degree T c-T2c is less than 12 ℃, the inner supercooling degree may deviate, resulting in noise, so that the opening degree of the electric ball valve 204 of the external machine 200 needs to be increased in the case of the current opening degree, thereby increasing the outer flow rate, and reducing the inner flow rate, thereby helping the reheater 103 maintain the target supercooling degree; when the reheater supercooling degree T c-T2c is greater than 18 ℃, the outlet air temperature is low, and the thermal comfort is poor, so that the opening degree of the electric ball valve 204 of the external machine 200 needs to be reduced under the condition of the current opening degree, the external flow rate is reduced, and the internal flow rate is increased, thereby helping the reheater 103 maintain the target supercooling degree. Wherein, the temperature of 12 ℃ in the formula can be adjusted to other values between 10 ℃ and 16 ℃, and the temperature of 18 ℃ can be adjusted to other values between 16 ℃ and 20 ℃.
Referring to fig. 2, a second aspect of the present invention provides a method for controlling operation of a dehumidification and temperature control system, which is applied to the dehumidification and temperature control system shown in fig. 1, the dehumidification and temperature control system includes an inner machine 100 and an outer machine 200, the inner machine 100 includes an evaporator 101 for cooling and dehumidifying, a reheater 103 for reheating and heating, and a reheater electronic expansion valve 104 connected to the reheater 103; the external machine 200 comprises a compressor 201, a four-way valve 202, an outdoor heat exchanger 203, an electric ball valve 204 and a first electromagnetic valve 205, wherein an exhaust port of the compressor 201 is connected to the four-way valve 202 through an exhaust pipe 207, the electric ball valve 204 is arranged on the exhaust pipe 207, the four-way valve 202 is connected to the outdoor heat exchanger 203, the outdoor heat exchanger 203 is connected to the reheater electronic expansion valve 104 and the evaporator 101 through a liquid side connecting pipe 208, the four-way valve 202 is also connected to the evaporator 101 through an air side connecting pipe 210, an exhaust port of the compressor 201 is also connected to the reheater 103 through a high-low pressure connecting pipe 211, and the first electromagnetic valve 205 is arranged on the high-low pressure connecting pipe 211; the operation control method includes step S210:
step S210: in the dehumidification reheat mode, the opening of the electric ball valve 204 is controlled according to the opening of the reheater electronic expansion valve 104, the indoor temperature, and the reheater supercooling degree.
According to the operation control method of the dehumidification temperature control system provided by the embodiment of the invention, the electric ball valve 204 is arranged on the exhaust pipe 207 between the exhaust port of the compressor 201 and the four-way valve 202, so that the original electromagnetic valve is replaced, the opening degree of the electric ball valve 204 is controlled to adjust the refrigerant flow, the adjustment flexibility of the refrigerant flow is improved, the refrigerant flow is not required to be adjusted through the electronic expansion valve of the external machine 200, the condensation condition possibly generated by the adjustment of the electronic expansion valve of the external machine 200 is avoided, the risk of short circuit of the system electric control board is reduced, and the reliability of the system operation is improved.
In addition, the temperature control of the dehumidification and temperature control system of the present embodiment mainly controls the supercooling degree Δt=t c-T2c of the reheater 103, where T c is the condensation temperature and T 2c is the reheater outlet temperature. The manner of performing temperature control includes a manner of directly changing the heat exchange amount of the reheater 103 and a manner of changing the heat exchange amount of the outdoor heat exchanger 203 so as to indirectly change the heat exchange amount of the reheater 103, wherein the manner of directly changing the heat exchange amount of the reheater 103 is mainly to adjust the opening degree of the electronic expansion valve 104 of the reheater, and the manner of changing the heat exchange amount of the outdoor heat exchanger 203 so as to indirectly change the heat exchange amount of the reheater 103 includes to adjust the opening degree of the electric ball valve 204 in the external machine, adjust the rotation speed of the external machine fan, and the like.
In the operation control method of the dehumidification temperature control system of fig. 2, the controlling the opening of the electric ball valve 204 according to the opening of the reheater electronic expansion valve 104, the indoor temperature and the reheater supercooling degree in step S210 includes:
when the opening of the reheater electronic expansion valve 104 is smaller than the first preset opening, controlling the opening of the electric ball valve 204 to be adjusted to the maximum opening;
When the opening of the reheater electronic expansion valve 104 is greater than or equal to the first preset opening, the opening of the electric ball valve 204 is controlled according to the indoor temperature and the reheater supercooling degree.
It can be understood that the opening degree of the reheater electronic expansion valve 104 reflects whether the reheater 103 needs reheating, and when the opening degree of the reheater electronic expansion valve 104 is smaller than the first preset opening degree, it is indicated that the internal machine 100 does not need reheating, so that the opening degree of the electric ball valve 204 is adjusted to the maximum opening degree, and the external machine 200 bears the maximum heating amount at this time; when the opening of the electronic expansion valve 104 of the reheater is greater than or equal to the first preset opening, which indicates that the internal machine 100 needs to be reheated, the external machine 200 should be adjusted in a matching manner, and the opening of the electric ball valve 204 is controlled according to the indoor temperature and the supercooling degree of the reheater, so as to effectively control the air outlet temperature of the internal machine 100.
In the operation control method of the dehumidification and temperature control system of an embodiment, the controlling the opening of the electric ball valve 204 according to the indoor temperature and the subcooling degree of the reheater includes:
When the indoor temperature is greater than the sum of the set temperature and the preset temperature compensation value, controlling the opening of the electric ball valve 204 to be adjusted to the heating minimum opening;
when the indoor temperature is greater than the set temperature and is less than or equal to the sum of the set temperature and the preset temperature compensation value, controlling the electric ball valve 204 to keep the current opening;
and when the indoor temperature is less than or equal to the set temperature, controlling the opening of the electric ball valve 204 according to the supercooling degree of the reheater.
When the indoor temperature is greater than the sum of the set temperature and the preset temperature compensation value, the current indoor temperature is higher than the set temperature, the opening of the electric ball valve 204 is adjusted to the heating minimum opening, the air outlet temperature of the inner machine 100 is relatively reduced, and the indoor temperature can be ensured to meet the requirement; when the indoor temperature is greater than the set temperature and less than or equal to the sum of the set temperature and the preset temperature compensation value, the current indoor temperature is in a proper range, and the air outlet temperature of the internal machine 100 is not required to be adjusted, so that the electric ball valve 204 is controlled to keep the current opening unchanged; when the indoor temperature is less than or equal to the set temperature, which means that the indoor temperature does not reach the temperature required by the user at this time, not only the air outlet temperature needs to be guaranteed to be improved, but also the operation noise value needs to be considered, and through a great amount of practical verification, when the supercooling degree of the reheater is maintained in the preset supercooling degree range, the operation noise value and the air outlet temperature can be considered, so that the opening degree of the electric ball valve 204 needs to be controlled according to the supercooling degree of the reheater.
In the operation control method of the dehumidification and temperature control system of an embodiment, controlling the opening of the electric ball valve 204 according to the reheater supercooling degree includes:
When the supercooling degree of the reheater falls into a preset supercooling degree range, controlling the opening of the movable ball valve to be adjusted to a first preset opening or keeping the current opening;
When the subcooling degree of the reheater is larger than or equal to the upper limit value of the preset subcooling degree range, reducing the opening degree of the electric ball valve 204 on the basis of the first preset opening degree;
when the reheater supercooling degree is less than or equal to the lower limit value of the preset supercooling degree range, the opening degree of the electric ball valve 204 is increased on the basis of the first preset opening degree.
When the supercooling degree of the reheater is greater than or equal to the upper limit value of the preset supercooling degree range, the opening degree of the electric ball valve 204 is reduced on the basis of the first preset opening degree, so that the supercooling degree of the reheater is reduced to a certain extent, and falls into the preset supercooling degree range; similarly, when the subcooling degree of the reheater is smaller than or equal to the lower limit value of the preset subcooling degree range, the opening degree of the electric ball valve 204 is increased on the basis of the first preset opening degree, so that the subcooling degree of the reheater is increased to a certain extent, and falls into the preset subcooling degree range.
In the operation control method of the dehumidification and temperature control system, the opening degree of the reduced electric ball valve 204 is C-C/A, wherein: c is a first preset opening degree, and A is a preset constant.
In the operation control method of the dehumidification and temperature control system, the opening degree of the increased electric ball valve 204 is c+c/a, wherein: c is a first preset opening degree, and A is a preset constant.
The following describes the control of the electrically operated ball valve 204 in a dehumidification reheat mode for a dehumidification control system in a detailed embodiment. The opening of the electric ball valve 204 on the exhaust pipe 207 between the compressor 201 of the outer unit 200 and the four-way valve 202 determines the distribution of the refrigerant flow rates of the inner unit 100 and the outer unit 200, so that the distribution of the refrigerant flow rate can be reasonably adjusted by using the opening of the electric ball valve 204, the condensation heat dissipation capacity of the outdoor heat exchanger 203 of the outer unit 200 can be reduced, the heat dissipation capacity of the reheater 103 of the inner unit 100 can be increased, and the air outlet temperature of the inner unit can be controlled. Specifically: i) If the opening of the reheater electronic expansion valve 104 is smaller than a certain value, it is indicated that the internal machine 100 does not need reheating, and the external machine 200 should bear the maximum heating amount, so that the opening of the electric ball valve 204 of the external machine 200 is kept the maximum; ii) if the opening of the reheater electronic expansion valve 104 is greater than a certain value, which indicates that the inner machine 100 needs reheating, the outer machine 200 should be adjusted in a matching way, and the opening of the electric ball valve 204 is controlled as follows:
wherein f 204 is the opening of the electric ball valve 204, a is the heating minimum opening, T1 is the indoor temperature, ts is the set temperature, and f 1 is the opening adjusting function of the electric ball valve 204 when the indoor temperature does not reach the set temperature; f 2 indicates that the opening of the electrically operated ball valve 204 remains unchanged. The opening degree adjustment function f 1 is a function taking the reheater supercooling degree T c-T2c as a control variable, and specifically includes:
It can be seen that when the reheater supercooling degree T c-T2c falls within the preset supercooling degree range, the opening degree of the electric ball valve 204 is set to a constant value, and when the reheater supercooling degree T c-T2c is less than 12 ℃, the inner supercooling degree may deviate, resulting in noise, so that the opening degree of the electric ball valve 204 of the external machine 200 needs to be increased in the case of the current opening degree, thereby increasing the outer flow rate, and reducing the inner flow rate, thereby helping the reheater 103 maintain the target supercooling degree; when the reheater supercooling degree T c-T2c is greater than 18 ℃, the outlet air temperature is low, and the thermal comfort is poor, so that the opening degree of the electric ball valve 204 of the external machine 200 needs to be reduced under the condition of the current opening degree, the external flow rate is reduced, and the internal flow rate is increased, thereby helping the reheater 103 maintain the target supercooling degree. Wherein, the temperature of 12 ℃ in the formula can be adjusted to other values between 10 ℃ and 16 ℃, and the temperature of 18 ℃ can be adjusted to other values between 16 ℃ and 20 ℃.
In addition, referring to fig. 3, an embodiment of the third aspect of the present invention provides an operation control apparatus 300, including a memory 310, a processor 320, and a computer program stored in the memory 310 and executable on the processor 320, where the processor 320 executes the program to implement the operation control method of the dehumidification temperature control system of the above second aspect embodiment, for example, to perform the method step S210 in fig. 2.
According to the operation control device provided by the embodiment of the invention, the electric ball valve 204 is arranged on the exhaust pipe 207 between the exhaust port of the compressor 201 and the four-way valve 202, so that the original electromagnetic valve is replaced, the opening degree of the electric ball valve 204 is controlled to adjust the refrigerant flow, the adjustment flexibility of the refrigerant flow is improved, the refrigerant flow is not required to be adjusted through the electronic expansion valve of the external machine 200, the condensation condition possibly generated by the adjustment of the electronic expansion valve of the external machine 200 is avoided, the risk of short circuit of the system electric control board is reduced, and the reliability of the system operation is improved.
In a fourth aspect, an embodiment of the present invention provides an air conditioning system, including the operation control device according to the embodiment of the third aspect.
According to the air conditioning system provided by the embodiment of the invention, the electric ball valve 204 is arranged on the exhaust pipe 207 between the exhaust port of the compressor 201 and the four-way valve 202, so that the original electromagnetic valve is replaced, the opening degree of the electric ball valve 204 is controlled to regulate the flow rate of the refrigerant, the regulating flexibility of the flow rate of the refrigerant is improved, the flow rate of the refrigerant is not required to be regulated through the electronic expansion valve of the external machine 200, the condensation condition possibly generated by the regulation of the electronic expansion valve of the external machine 200 is avoided, the risk of short circuit of the electric control board of the system is reduced, and the working reliability of the system is improved.
In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the operation control method of the dehumidification temperature control system of the above second aspect embodiment, for example, to perform the method step S210 in fig. 2.
According to the computer readable storage medium provided by the embodiment of the invention, the electric ball valve 204 is arranged on the exhaust pipe 207 between the exhaust port of the compressor 201 and the four-way valve 202, so that the original electromagnetic valve is replaced, the opening degree of the electric ball valve 204 is controlled to adjust the refrigerant flow, the adjustment flexibility of the refrigerant flow is improved, the refrigerant flow is not required to be adjusted through the electronic expansion valve of the external machine 200, the condensation condition possibly generated by the electronic expansion valve adjustment of the external machine 200 is avoided, the risk of short circuit of the system electric control board is reduced, and the working reliability of the system is improved.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media or non-transitory media and communication media or transitory media. The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk DVD or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by the computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims (9)

1. A dehumidification and temperature control system, comprising:
The internal machine comprises an evaporator for cooling and dehumidifying, a reheater for reheating and heating and a reheating electronic expansion valve connected with the reheater;
the external machine comprises a compressor, a four-way valve, an outdoor heat exchanger, an electric ball valve and a first electromagnetic valve, wherein an exhaust port of the compressor is connected to the four-way valve through an exhaust pipe, the electric ball valve is arranged on the exhaust pipe, the four-way valve is connected to the outdoor heat exchanger, the outdoor heat exchanger is connected to the reheating electronic expansion valve and the evaporator through a liquid side connecting pipe, the four-way valve is also connected to the evaporator through a gas side connecting pipe, an exhaust port of the compressor is also connected to the reheater through a high-low pressure connecting pipe, and the first electromagnetic valve is arranged on the high-low pressure connecting pipe;
The controller is used for controlling the opening of the electric ball valve according to the opening of the reheating electronic expansion valve, the indoor temperature and the supercooling degree of the reheater in a dehumidification reheating mode;
wherein:
The controlling the opening of the electric ball valve according to the opening of the reheating electronic expansion valve, the indoor temperature and the supercooling degree of the reheater comprises the following steps:
when the opening of the reheating electronic expansion valve is smaller than a first preset opening, controlling the opening of the electric ball valve to be adjusted to the maximum opening;
And when the opening of the reheating electronic expansion valve is larger than or equal to a first preset opening, controlling the opening of the electric ball valve according to the indoor temperature and the supercooling degree of the reheater.
2. The dehumidification control temperature system according to claim 1, wherein the controlling the opening of the electrically operated ball valve according to the indoor temperature and the reheater supercooling degree comprises:
when the indoor temperature is greater than the sum of the set temperature and the preset temperature compensation value, controlling the opening of the electric ball valve to be adjusted to the heating minimum opening;
when the indoor temperature is greater than the set temperature and is less than or equal to the sum of the set temperature and a preset temperature compensation value, controlling the electric ball valve to keep the current opening;
And when the indoor temperature is less than or equal to the set temperature, controlling the opening of the electric ball valve according to the supercooling degree of the reheater.
3. The dehumidification control temperature system according to claim 2, wherein the controlling the opening of the electrically operated ball valve according to the reheater supercooling degree comprises:
when the supercooling degree of the reheater falls into a preset supercooling degree range, controlling the opening of the movable ball valve to be adjusted to a first preset opening or keeping the current opening;
When the supercooling degree of the reheater is larger than or equal to the upper limit value of the range of the preset supercooling degree, reducing the opening of the electric ball valve on the basis of the first preset opening;
and when the supercooling degree of the reheater is smaller than or equal to the lower limit value of the range of the preset supercooling degree, increasing the opening of the electric ball valve on the basis of the first preset opening.
4. An operation control method applied to the dehumidification temperature control system according to any one of claims 1 to 3, comprising:
in a dehumidification reheating mode, controlling the opening of the electric ball valve according to the opening of the reheating electronic expansion valve, the indoor temperature and the supercooling degree of the reheater;
wherein:
The controlling the opening of the electric ball valve according to the opening of the reheating electronic expansion valve, the indoor temperature and the supercooling degree of the reheater comprises the following steps:
when the opening of the reheating electronic expansion valve is smaller than a first preset opening, controlling the opening of the electric ball valve to be adjusted to the maximum opening;
And when the opening of the reheating electronic expansion valve is larger than or equal to a first preset opening, controlling the opening of the electric ball valve according to the indoor temperature and the supercooling degree of the reheater.
5. The operation control method according to claim 4, wherein the controlling the opening of the electrically operated ball valve according to the indoor temperature and the reheater supercooling degree includes:
when the indoor temperature is greater than the sum of the set temperature and the preset temperature compensation value, controlling the opening of the electric ball valve to be adjusted to the heating minimum opening;
when the indoor temperature is greater than the set temperature and is less than or equal to the sum of the set temperature and a preset temperature compensation value, controlling the electric ball valve to keep the current opening;
And when the indoor temperature is less than or equal to the set temperature, controlling the opening of the electric ball valve according to the supercooling degree of the reheater.
6. The operation control method according to claim 5, wherein the controlling the opening of the electrically operated ball valve according to the reheater supercooling degree includes:
when the supercooling degree of the reheater falls into a preset supercooling degree range, controlling the opening of the movable ball valve to be adjusted to a first preset opening or keeping the current opening;
When the supercooling degree of the reheater is larger than or equal to the upper limit value of the range of the preset supercooling degree, reducing the opening of the electric ball valve on the basis of the first preset opening;
and when the supercooling degree of the reheater is smaller than or equal to the lower limit value of the range of the preset supercooling degree, increasing the opening of the electric ball valve on the basis of the first preset opening.
7. An operation control apparatus comprising a memory, a processor and a computer program stored on the memory and operable on the processor, the processor executing the program to implement the operation control method according to any one of claims 4 to 6.
8. An air conditioning system comprising the operation control device according to claim 7.
9. A computer-readable storage medium storing computer-executable instructions for causing a computer to execute the operation control method according to any one of claims 4 to 6.
CN202210777674.7A 2022-07-04 2022-07-04 Dehumidification temperature control system, operation control method, operation control device and storage medium Active CN114963355B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210777674.7A CN114963355B (en) 2022-07-04 2022-07-04 Dehumidification temperature control system, operation control method, operation control device and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210777674.7A CN114963355B (en) 2022-07-04 2022-07-04 Dehumidification temperature control system, operation control method, operation control device and storage medium

Publications (2)

Publication Number Publication Date
CN114963355A CN114963355A (en) 2022-08-30
CN114963355B true CN114963355B (en) 2024-05-03

Family

ID=82971390

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210777674.7A Active CN114963355B (en) 2022-07-04 2022-07-04 Dehumidification temperature control system, operation control method, operation control device and storage medium

Country Status (1)

Country Link
CN (1) CN114963355B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112944522A (en) * 2021-04-07 2021-06-11 南京天加环境科技有限公司 Air conditioner, floor heating and domestic hot water triple co-generation system
CN113739378A (en) * 2020-05-29 2021-12-03 广东美的制冷设备有限公司 Control method of air conditioning system, air conditioning system and storage medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113739378A (en) * 2020-05-29 2021-12-03 广东美的制冷设备有限公司 Control method of air conditioning system, air conditioning system and storage medium
CN112944522A (en) * 2021-04-07 2021-06-11 南京天加环境科技有限公司 Air conditioner, floor heating and domestic hot water triple co-generation system

Also Published As

Publication number Publication date
CN114963355A (en) 2022-08-30

Similar Documents

Publication Publication Date Title
JP3740637B2 (en) Air conditioner
CN109595845B (en) Fresh air conditioning system and control method
CN210832604U (en) Air conditioner
CN109869941B (en) Heat pump system, air suction superheat degree and vapor-liquid separator accumulated liquid evaporation control method
WO2018062316A1 (en) Air conditioner
US20210180802A1 (en) Air-conditioning system
CN111998565A (en) Dual-temperature air conditioning system and control method thereof
WO2019017351A1 (en) Freezer
KR20190005445A (en) Method for controlling multi-type air conditioner
JP2015117894A (en) Air conditioner outdoor unit
CN111279137B (en) Refrigeration cycle device
CN110709648B (en) Air conditioner
CN114061055B (en) Air conditioner, control method, air conditioner control device and readable storage medium
CN114963355B (en) Dehumidification temperature control system, operation control method, operation control device and storage medium
CN112228977A (en) Heat pump system, control method and device thereof, air conditioning equipment and storage medium
CN114427760A (en) Air conditioning unit and control method thereof
CN112268379A (en) Heat pump system, control method and device thereof, air conditioning equipment and storage medium
CN112797659A (en) Air conditioner and control method thereof
JP2018071864A (en) Air conditioner
CN113375301B (en) Air conditioner control method and device, storage medium and air conditioner
US11624518B2 (en) Water source heat pump head pressure control for hot gas reheat
JP2019020089A (en) Freezing unit
CN212362480U (en) Double-temperature air conditioning system
CN113757936A (en) Air conditioner control system, air conditioner and control method of air conditioner
JP2000055444A (en) Air conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant