CN117006518A - Air conditioner and control method thereof - Google Patents

Air conditioner and control method thereof Download PDF

Info

Publication number
CN117006518A
CN117006518A CN202310891100.7A CN202310891100A CN117006518A CN 117006518 A CN117006518 A CN 117006518A CN 202310891100 A CN202310891100 A CN 202310891100A CN 117006518 A CN117006518 A CN 117006518A
Authority
CN
China
Prior art keywords
evaporator
air conditioner
expansion valve
inlet side
wind speed
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.)
Pending
Application number
CN202310891100.7A
Other languages
Chinese (zh)
Inventor
申伟杰
刘伟彤
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.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Smart Technology R&D Co Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Smart Technology R&D Co Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home 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 Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Smart Technology R&D Co Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202310891100.7A priority Critical patent/CN117006518A/en
Publication of CN117006518A publication Critical patent/CN117006518A/en
Pending legal-status Critical Current

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
    • 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
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • F24F1/0087—Indoor units, e.g. fan coil units with humidification 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
    • F24F11/62—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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application relates to the technical field of air conditioners, in particular to an air conditioner and a control method thereof, and aims to solve the problem of how to increase humidity under the condition of further reducing the minimum refrigeration temperature of the air conditioner. For this purpose, the air conditioner of the application is provided with the first expansion valve at the inlet side of the first evaporator, so that part of the refrigerant flowing out of the outdoor unit forms a low-pressure liquid state through the first expansion valve and enters the first evaporator, and the refrigerant in the first evaporator exchanges heat with the gas, so that the indoor temperature can be lower. And another part of the refrigerant flowing out from the outdoor unit can enter the hairpin tube of the second evaporator, and the refrigerant entering the second evaporator does not pass through the expansion valve, so that the condensed water in the water receiving disc can be evaporated when the refrigerant flows through the hairpin tube arranged in the water receiving disc, and the air conditioner can further reduce the minimum refrigeration temperature of the air conditioner and increase the humidity.

Description

Air conditioner and control method thereof
Technical Field
The application relates to the field of air conditioners, and particularly provides an air conditioner and a control method thereof.
Background
With the continuous improvement of the living standard of people, the collection of famous wine has been paid more attention to in recent years. Taking red wine as an example, the collection of the red wine has high requirement on environment, wherein the optimal storage temperature of the red wine is 10-15 ℃, the humidity is 40-60%, and the quality of the red wine can be ensured only by proper temperature and humidity. However, the lowest refrigerating temperature of the current air conditioner is 16 ℃ in a refrigerating mode, when the temperature of the air conditioner reaches the temperature, the air conditioner runs at a low frequency, the temperature is not reduced any more, and the refrigerant can absorb moisture in the air in the refrigerating mode of the air conditioner, so that the humidity is reduced, the red wine cannot be in the optimal temperature and humidity, and the quality of the red wine is affected.
Accordingly, there is a need in the art for a new solution to the above-mentioned problems.
Disclosure of Invention
In order to solve at least one problem in the prior art, namely, in order to solve the problem of how to increase humidity under the condition of further reducing the minimum refrigeration temperature of the air conditioner, the application provides an air conditioner, which comprises an indoor unit and an outdoor unit;
the indoor unit comprises a water pan and an evaporator, and the water pan is arranged below the evaporator;
the evaporator comprises a first evaporator and a second evaporator; the inlet side of the first evaporator is provided with a first expansion valve; the inlet side of the first expansion valve and the inlet side of the second evaporator can be communicated with the outlet side of the outdoor unit, the outlet side of the first evaporator and the outlet side of the second evaporator can be communicated with the inlet side of the outdoor unit, and at least part of the hairpin tubes of the second evaporator are arranged in the water receiving disc.
In a preferred embodiment of the air conditioner, the first evaporator includes a first-stage evaporator and a second-stage evaporator, and an inlet side of the first-stage evaporator and an inlet side of the second-stage evaporator are connectable to the first expansion valve.
In a preferred embodiment of the above air conditioner, the inlet side of the first-stage evaporator and the inlet side of the second-stage evaporator are connected to the same first expansion valve; or alternatively
The inlet side of the first-stage evaporator and the inlet side of the second-stage evaporator are respectively provided with the first expansion valve.
In the preferred technical scheme of the air conditioner, the first section of evaporator is arranged at one end of the second evaporator far away from the water receiving disc, and a first included angle is formed between the first section of evaporator and the second evaporator; and/or
The second section evaporator is far away from one end of the first section evaporator far away from the second section evaporator, and a second included angle is formed between the second section evaporator and the first section evaporator.
In the preferable technical scheme of the air conditioner, the first included angle is larger than 90 degrees and smaller than 180 degrees; and/or
The second included angle is larger than 0 degrees and smaller than or equal to 180 degrees.
In the preferable technical scheme of the air conditioner, the outdoor unit comprises a compressor and a condenser;
the inlet side of the first expansion valve and the second evaporator can be in communication with the outlet side of the condenser, and the outlet side of the first evaporator and the outlet side of the second evaporator can be in communication with the inlet side of the compressor.
In a preferred embodiment of the above air conditioner, the outdoor unit further includes a second expansion valve, the second expansion valve is disposed at an outlet side of the outdoor unit, and the first expansion valve and an inlet side of the second evaporator can be communicated with the outlet side of the outdoor unit through the second expansion valve.
As will be appreciated by those skilled in the art, the air conditioner of the present application includes an indoor unit and an outdoor unit, wherein the indoor unit includes a water tray and an evaporator, and the water tray is disposed below the evaporator for receiving condensed water generated by the evaporator. The evaporator comprises a first evaporator and a second evaporator, wherein the inlet side of the first evaporator is provided with a first expansion valve, so that the temperature of the refrigerant in the first evaporator is lower than that of the refrigerant in the second evaporator, part of the refrigerant flowing out of the outdoor unit forms a low-pressure liquid state through the first expansion valve and enters the first evaporator, and the refrigerant in the first evaporator exchanges heat with gas in an indoor environment, so that the minimum refrigeration temperature of the air conditioner can be further reduced, and the indoor temperature can be lower. And another part of the refrigerant flowing out from the outdoor unit can enter the hairpin tube of the second evaporator, and the refrigerant entering the second evaporator does not pass through the expansion valve, so that the condensed water in the water receiving disc can be heated when the refrigerant flows through the hairpin tube arranged in the water receiving disc, and the condensed water is evaporated to generate steam, thereby the air conditioner can further reduce the minimum refrigeration temperature of the air conditioner and increase the humidity of the indoor environment.
Further, the first evaporator comprises a first section evaporator and a second section evaporator, so that the evaporator in the air conditioner is a three-section evaporator, the inlet side of the first section evaporator and the inlet side of the second section evaporator can be connected with the first expansion valve, and the refrigerant flowing out through the first expansion valve can enter the first section evaporator and the second section evaporator at the same time, and further the cooling efficiency can be improved.
Further, by arranging the same first expansion valve on the inlet side of the first-stage evaporator and the second-stage evaporator, or arranging the first expansion valves on the inlet side of the first-stage evaporator and the inlet side of the second-stage evaporator respectively, the cooling efficiency can be improved, and meanwhile, the practicability of the air conditioner can be improved.
Further, the first section evaporator is arranged at one end, far away from the water receiving disc, of the second evaporator, and a first included angle is formed between the first section evaporator and the second evaporator, so that condensed water generated by the first section evaporator can be reheated and evaporated after passing through the second evaporator, and humidification is facilitated. Through setting up the second section evaporimeter in the one end that the second evaporimeter was kept away from to first section evaporimeter, and there is the second contained angle between second section evaporimeter and the first section evaporimeter for the condensate water that the second section evaporimeter produced can enter into the water collector, for water collector supplementary water yield, thereby make the air conditioner can last for indoor environment humidification under the refrigeration mode.
Further, by arranging the second expansion valve in the outdoor unit, the air conditioner can realize the purposes of refrigeration and heating by adjusting the opening degrees of the first expansion valve and the second expansion valve, and simultaneously, the minimum refrigeration temperature of the air conditioner can be further reduced by adjusting the first expansion valve and the second expansion valve.
The application also provides a control method of the air conditioner, wherein the air conditioner is the air conditioner according to any preferable technical scheme, and the control method comprises the following steps:
responding to a refrigerating instruction, and operating a refrigerating mode of the air conditioner;
acquiring a set temperature;
comparing the set temperature with a preset temperature;
when the set temperature is smaller than the preset temperature, determining the target opening of the first expansion valve;
the first expansion valve is controlled based on a target opening degree.
In a preferred embodiment of the above air conditioner control method, when the outdoor unit includes a second expansion valve, the step of "controlling the first expansion valve based on the target opening degree" specifically includes controlling the second expansion valve according to the maximum opening degree while controlling the first expansion valve based on the target opening degree.
In a preferred technical solution of the above air conditioner control method, when the indoor unit includes a fan, the control method further includes:
acquiring a set wind speed of the air conditioner;
comparing the set wind speed with the preset wind speed
When the set wind speed is smaller than the preset wind speed, controlling a fan of the air conditioner to operate according to the preset wind speed;
when the set wind speed is greater than or equal to the preset wind speed, controlling a fan of the air conditioner to operate according to the set wind speed.
As can be appreciated by those skilled in the art, in the control method of the air conditioner of the present application, by comparing the set temperature with the preset temperature, and determining the target opening degree of the first expansion valve when the set temperature is less than the preset temperature, and controlling the first expansion valve to operate according to the target opening degree, the temperature of the refrigerant in the first evaporator is lower than the temperature of the refrigerant in the second evaporator, so that a part of the refrigerant flowing out of the outdoor unit forms a low-pressure liquid state through the first expansion valve and enters the first evaporator, and the refrigerant in the first evaporator exchanges heat with the gas in the indoor environment, thereby further reducing the minimum refrigeration temperature of the air conditioner and enabling the indoor energy to reach a lower temperature. And the refrigerant entering the second evaporator does not pass through the expansion valve, so that when the refrigerant flows through the hairpin tube arranged in the water receiving disc, condensed water in the water receiving disc can be evaporated, and the air conditioner can further reduce the minimum refrigeration temperature of the air conditioner and simultaneously increase the humidity of the indoor environment.
Further, the first expansion valve is controlled according to the target opening degree, and the second expansion valve is controlled according to the maximum opening degree, so that the air conditioner can operate according to the set temperature on one hand, and high-temperature and high-pressure refrigerant generated by the outdoor unit enters into the hairpin tube of the second-stage evaporator and can evaporate condensed water in the water receiving disc, and therefore the air conditioner can further reduce the minimum refrigeration temperature of the air conditioner and increase the humidity of the indoor environment.
Further, by controlling the fan of the air conditioner to operate according to the maximum wind speed of the set wind speed and the preset wind speed, the evaporation effect of condensed water on the evaporator can be increased, and the humidifying effect of the air conditioner can be improved.
Drawings
Preferred embodiments of the present application are described below with reference to the accompanying drawings, in which:
fig. 1 is a plan view of an evaporator in an air conditioner according to the present application;
FIG. 2 is a flowchart of a control method of the air conditioner of the present application;
fig. 3 is a logic diagram of one possible embodiment of a control method of an air conditioner of the present application.
List of reference numerals:
1. a first evaporator; 11. a first stage evaporator; 12. a second stage evaporator; 2. a second evaporator; 3. a first expansion valve.
Detailed Description
Preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present application, and are not intended to limit the scope of the present application. For example, while the present embodiment is described in connection with a wine storage compartment, it is not intended to limit the scope of the application, and one skilled in the art may apply the application to other applications without departing from the principles of the application. For example, the air conditioner of the present application can obviously be applied to other types of occasions, such as laboratories and the like.
It should be noted that, in the description of the present application, terms such as "upper," "lower," "inner," "bottom," "end," and the like indicate directional or positional relationships based on the directional or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application.
In addition, it should be noted that, in the description of the present application, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be mechanically connected, can be directly connected or can be indirectly connected through an intermediate medium, and can be communicated with each other. The specific meaning of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances.
Referring first to fig. 1, an air conditioner of the present application will be described. Wherein fig. 1 is a plan view of an evaporator in an air conditioner according to the present application.
As shown in fig. 1, the air conditioner of the present application includes an indoor unit and an outdoor unit in order to solve the problem of how to increase the quality of red wine by increasing the humidity while further decreasing the cooling temperature of the air conditioner. The indoor unit comprises a water receiving disc and an evaporator, and the water receiving disc is arranged below the evaporator. The evaporator comprises a first evaporator 1 and a second evaporator 2; the inlet side of the first evaporator 1 is provided with a first expansion valve 3, the inlet sides of the first expansion valve 3 and the second evaporator 2 can be communicated with the outlet side of the outdoor unit, the outlet side of the first evaporator 1 and the outlet side of the second evaporator 2 can be communicated with the inlet side of the outdoor unit, and at least part of the hairpin tubes of the second evaporator 2 are arranged in the water receiving tray.
The water receiving disc is arranged below the evaporator and is used for receiving condensed water generated by the evaporator. The evaporator comprises a first evaporator 1 and a second evaporator 2, wherein a first expansion valve 3 is arranged on the inlet side of the first evaporator 1, so that the temperature of refrigerant in the first evaporator 1 is lower than that of refrigerant in the second evaporator 2, part of refrigerant flowing out of an outdoor unit forms a low-pressure liquid state through the first expansion valve 3 and enters the first evaporator 1, and the refrigerant in the first evaporator 1 exchanges heat with gas in a red wine storage room, thereby further reducing the minimum refrigeration temperature of the air conditioner and enabling the red wine storage room to reach a lower temperature. The other part of the refrigerant flowing out from the outdoor unit can enter the hairpin tube of the second evaporator 2, and the refrigerant entering the second evaporator 2 does not pass through the expansion valve, so that the refrigerant can heat the condensed water in the water receiving disc when flowing through the hairpin tube arranged in the water receiving disc, and the condensed water is evaporated to generate steam, thereby the air conditioner can further reduce the minimum refrigeration temperature of the air conditioner, and simultaneously can increase the humidity of the red wine storage room, further the red wine can be in optimal temperature and humidity, and the quality of the red wine is improved.
With further reference to fig. 1, a preferred embodiment of the air conditioner of the present application will be described. It will be appreciated by those skilled in the art that the following description of the embodiments is merely illustrative of the principles of the present application and not in limitation of the scope of the application. On the premise that the air conditioner at least comprises an indoor unit and an outdoor unit, the following setting modes can be adjusted by a person skilled in the art, so that the application can be suitable for more specific application scenes.
Referring to fig. 1, the air conditioner includes an outdoor unit including a compressor, a condenser, and a second expansion valve, and an indoor unit. The indoor unit comprises a water receiving disc, an evaporator, a first expansion valve 3 and a four-way valve. The four-way valve is provided with four ports, and the heating and refrigerating functions of the air conditioner are met through the arrangement of the four ports. Wherein condenser, compressor, second expansion valve, first expansion valve 3, evaporimeter form refrigerant circulation loop, can satisfy the refrigeration demand of air conditioner.
It should be noted that, when the air conditioner generates a temperature lower than the lowest refrigerating temperature of the conventional air conditioner in the refrigerating mode, the opening degree of the second expansion valve is at the maximum, and the first expansion valve 3 is at the throttle, the air conditioner can generate a temperature lower than 16 ℃ (excluding 16 ℃), so that the air conditioner can generate an optimal storage temperature satisfying red wine. When the air conditioner needs to perform the normal cooling mode, the opening degree of the first expansion valve 3 is at a maximum and the second expansion valve is at a throttle such that the air conditioner generates a cooling temperature higher than 16 c (including 16 c).
Referring next to fig. 1, a water receiving tray is provided below the evaporator (not shown) for receiving condensed water generated by the evaporator. The evaporator comprises a first evaporator 1 and a second evaporator 2, and the hairpin tube of the second evaporator 2 is arranged in the water receiving disc. The first evaporator 1 comprises a first section evaporator 11 and a second section evaporator 12, the first section evaporator 11 is arranged at one end of the second evaporator 2 far away from the water receiving disc, and a first included angle exists between the first section evaporator 11 and the second evaporator 2, so that condensed water generated by the first section evaporator 11 can be reheated and evaporated after passing through the second evaporator 2, and the red wine storage chamber can be humidified conveniently. The second section evaporator 12 is far away from the first section evaporator 11 and is far away from one end of the second section evaporator 2, and a second included angle exists between the second section evaporator 12 and the first section evaporator 11, so that condensed water generated by the second section evaporator 12 can enter the water receiving disc to supplement water for the water receiving disc, and the air conditioner can continuously humidify the indoor environment in a refrigeration mode.
Of course, the specific structure of the evaporator is not fixed, and the person skilled in the art can adjust the structure according to specific application scenarios. For example, the first evaporator 1 includes only the first-stage evaporator 11 or the second-stage evaporator 12. When the first evaporator 1 only includes the second segment evaporator 12, the second segment evaporator 12 is disposed at one end of the second evaporator 2 far away from the water pan, and an included angle exists between the second segment evaporator 12 and the second evaporator 2, and the included angle may be greater than 0 ° and less than or equal to 180 °.
Of course, the present application is not limited to the first included angle, as long as the condensed water generated by the first-stage evaporator 11 can flow through the second evaporator 2. If the first included angle is greater than 90 deg., and less than 180 deg.. In addition, the size of the second included angle is not limited in the present application, as long as the condensed water generated by the second-stage evaporator 12 can flow into the water receiving tray. For example, the second included angle is greater than 0 ° and less than or equal to 180 °.
Referring next to fig. 1, the inlet side of the first stage evaporator 11 and the inlet side of the second stage evaporator 12 are connected to the same first expansion valve 3. The inlet sides of the first expansion valve 3 and the second evaporator 2 are communicated with the outlet side of the condenser through the second expansion valve, the outlet side of the first evaporator 1, the outlet side of the first section evaporator 11 and the outlet side of the second section evaporator 12 are communicated with the inlet side of the compressor, so that the refrigerant can flow into the compressor according to the flow from the condenser to the second expansion valve to the first merging portion, wherein the first merging portion is a portion where the second expansion valve respectively passes through the second evaporator 2 and merges after the second merging portion, the second merging portion is a portion where the first expansion valve 3 merges after passing through the third merging portion, and the third merging portion is a portion where the first expansion valve 3 respectively passes through the first section evaporator 11 and the second section evaporator 12, and the refrigerant flow path can enable the air conditioner to generate an optimal temperature suitable for red wine storage.
Of course, the specific arrangement of the first expansion valve 3 according to the present application is not fixed, and can be adjusted by those skilled in the art according to specific needs. For example, the inlet side of the first stage evaporator 11 and the inlet side of the second stage evaporator 12 are provided with the first expansion valve 3, respectively.
Next, a control method of the controller of the present application will be described. Fig. 2 is a flowchart of a control method of the air conditioner of the present application.
The application provides a control method of an air conditioner, and the air conditioner is the air conditioner in any specific embodiment. The control method comprises the following steps:
s101, responding to a refrigerating instruction, and operating the air conditioner in a refrigerating mode. For example, a key below 16 ℃, such as 12 ℃, may be provided on the air conditioner remote control, and the air conditioner operates in the cooling mode by the user pressing the key.
S102, acquiring a set temperature. For example, the temperature set by the user through the controller of the air conditioner may be obtained, or the temperature set by the user through the intelligent terminal connected to the air conditioner in a communication manner may be obtained, or the temperature set by the user in a voice manner may be obtained. The intelligent terminal can be a mobile phone, a tablet personal computer, an intelligent bracelet, an intelligent watch and other terminal equipment.
S103, comparing the set temperature with a preset temperature. For example, after the set temperature is obtained, the set temperature and the preset temperature are compared by comparing whether the difference between the set temperature and the preset temperature is greater than 0 or whether the ratio between the set temperature and the preset temperature is greater than 1.
S104, when the set temperature is less than the preset temperature, determining the target opening of the first expansion valve 3. For example, when the set temperature is less than the preset temperature, the target opening of the first expansion valve 3 may be determined according to the magnitude of the set temperature, where the set temperature may be proportional to the target opening, that is, when the set temperature is greater, the target opening of the first expansion valve 3 is greater, and when the set temperature is smaller, the target opening of the first expansion valve 3 is smaller.
S105, the first expansion valve 3 is controlled based on the target opening degree. For example, after determining the target opening degree, the first expansion valve 3 is controlled to operate in accordance with the target opening degree.
According to the control method of the air conditioner, the set temperature is compared with the preset temperature, when the set temperature is smaller than the preset temperature, the target opening degree of the first expansion valve 3 is determined, the first expansion valve 3 is controlled to operate according to the target opening degree, the temperature of the refrigerant in the first evaporator 1 is lower than that of the refrigerant in the second evaporator 2, part of the refrigerant flowing out of the outdoor unit forms a low-pressure liquid state through the first expansion valve 3 and enters the first evaporator 1, and the refrigerant in the first evaporator 1 exchanges heat with gas in the red wine storage room, so that the lowest refrigeration temperature of the air conditioner can be further reduced, and the red wine storage room can reach a lower temperature. The other part of the refrigerant flowing out from the outdoor unit can enter the hairpin tube of the second evaporator 2, and the refrigerant entering the second evaporator 2 does not pass through the expansion valve, so that the refrigerant can heat the condensed water in the water receiving disc when flowing through the hairpin tube arranged in the water receiving disc, and the condensed water is evaporated to generate steam, thereby the air conditioner can further reduce the minimum refrigeration temperature of the air conditioner, and simultaneously can increase the humidity of the red wine storage room, further the red wine can be in optimal temperature and humidity, and the quality of the red wine is improved.
It should be noted that the preset temperature is the lowest temperature in the normal cooling mode. For example, the minimum temperature of the red strip in the cooling mode is 16 ℃ at present, and the preset temperature is 16 ℃.
In one embodiment, when the outdoor unit includes the second expansion valve, the step of "controlling the first expansion valve 3 based on the target opening degree" specifically includes controlling the second expansion valve in accordance with the maximum opening degree while controlling the first expansion valve 3 based on the target opening degree.
For example, a preset temperature of 16 ℃ is illustrated. When the set temperature of the user is 12 ℃, the set temperature is smaller than the preset temperature, after the target opening degree of the first expansion valve 3 is determined according to the set temperature, the first expansion valve 3 is controlled based on the target opening degree, and the second expansion valve is controlled according to the maximum opening degree, so that the refrigerating temperature of the air conditioner is 12 ℃.
When the set temperature is equal to or higher than the preset temperature, the air conditioner is in the normal cooling mode, the target opening of the second expansion valve is determined, the second expansion valve is controlled based on the target opening, and the first expansion valve 3 is controlled according to the maximum opening, so that the cooling temperature of the air conditioner is the set temperature.
In a specific embodiment, when the indoor unit includes a fan, the control method further includes:
acquiring a set wind speed of an air conditioner;
comparing the set wind speed with the preset wind speed
When the set wind speed is smaller than the preset wind speed, controlling a fan of the air conditioner to operate according to the preset wind speed;
when the set wind speed is greater than or equal to the preset wind speed, controlling a fan of the air conditioner to operate according to the set wind speed.
It should be noted that the preset wind speed is the maximum wind speed in the normal cooling mode. When the air conditioner is in the ultralow temperature operation mode, in order to increase the evaporation effect of condensed water on the evaporator and improve the humidification effect of the air conditioner, a fan of the air conditioner is controlled to operate according to the maximum wind speed in the set wind speed and the preset wind speed.
One possible operation of the car air conditioner of the present application will be briefly described with reference to fig. 3. Fig. 3 is a logic diagram of a possible implementation of the power supply control method of the air conditioner for a motor home according to the present application.
S201, the air conditioner operates the cooling mode in response to the cooling instruction, and then S202 is performed.
S202, acquiring a set temperature, and then executing S203.
S203, comparing the set temperature with the preset temperature. When the set temperature is less than the preset temperature, S204 is performed, otherwise S210 is performed.
S204, a target opening degree of the first expansion valve 3 is determined, and then S205 is performed.
S205, the first expansion valve 3 is controlled based on the target opening degree, and at the same time, the second expansion valve is controlled in accordance with the maximum opening degree, and then S206 is executed.
S206, acquiring the set wind speed of the air conditioner indoor unit, and then executing S207.
S207, comparing the set wind speed with a preset wind speed. When the set wind speed is less than the preset wind speed, S208 is executed, otherwise S209 is executed.
S208, controlling a fan of the air conditioner to operate according to a preset wind speed.
S209, controlling a fan of the air conditioner to operate according to the set wind speed.
S210, a target opening degree of the second expansion valve is determined, and then S211 is performed.
S211, the second expansion valve is controlled based on the target opening degree, and the first expansion valve 3 is controlled according to the maximum opening degree.
Those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims of the present application, any of the claimed embodiments may be used in any combination.
Thus far, the technical solution of the present application has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present application is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present application, and such modifications and substitutions will fall within the scope of the present application.

Claims (10)

1. An air conditioner is characterized by comprising an indoor unit and an outdoor unit;
the indoor unit comprises a water pan and an evaporator, and the water pan is arranged below the evaporator;
the evaporator comprises a first evaporator and a second evaporator; the inlet side of the first evaporator is provided with a first expansion valve; the inlet side of the first expansion valve and the inlet side of the second evaporator can be communicated with the outlet side of the outdoor unit, the outlet side of the first evaporator and the outlet side of the second evaporator can be communicated with the inlet side of the outdoor unit, and at least part of the hairpin tubes of the second evaporator are arranged in the water receiving disc.
2. An air conditioner according to claim 1 wherein the first evaporator comprises a first stage evaporator and a second stage evaporator, the inlet side of the first stage evaporator and the inlet side of the second stage evaporator being connectable to the first expansion valve.
3. The air conditioner according to claim 2, wherein an inlet side of the first stage evaporator and an inlet side of the second stage evaporator are connected to the same first expansion valve; or alternatively
The inlet side of the first-stage evaporator and the inlet side of the second-stage evaporator are respectively provided with the first expansion valve.
4. The air conditioner of claim 2, wherein the first segment evaporator is disposed at an end of the second evaporator remote from the water pan and has a first included angle with the second evaporator; and/or
The second section evaporator is far away from one end of the first section evaporator far away from the second section evaporator, and a second included angle is formed between the second section evaporator and the first section evaporator.
5. The air conditioner of claim 4, wherein the first included angle is greater than 90 ° and less than 180 °; and/or
The second included angle is larger than 0 degrees and smaller than or equal to 180 degrees.
6. The air conditioner of claim 1, wherein the outdoor unit includes a compressor and a condenser;
the inlet side of the first expansion valve and the second evaporator can be in communication with the outlet side of the condenser, and the outlet side of the first evaporator and the outlet side of the second evaporator can be in communication with the inlet side of the compressor.
7. The air conditioner of claim 1, wherein the outdoor unit further comprises a second expansion valve provided at an outlet side of the outdoor unit, and the inlet sides of the first and second evaporators can communicate with the outlet side of the outdoor unit through the second expansion valve.
8. A control method of an air conditioner according to any one of claims 1 to 7, characterized by comprising:
responding to a refrigerating instruction, and operating a refrigerating mode of the air conditioner;
acquiring a set temperature;
comparing the set temperature with a preset temperature;
when the set temperature is smaller than the preset temperature, determining the target opening of the first expansion valve;
the first expansion valve is controlled based on a target opening degree.
9. The control method according to claim 8, wherein when the outdoor unit includes a second expansion valve, the step of controlling the first expansion valve based on a target opening degree includes controlling the second expansion valve in accordance with a maximum opening degree while controlling the first expansion valve based on a target opening degree.
10. The control method according to claim 8, wherein when the indoor unit includes a blower, the control method further comprises:
acquiring a set wind speed of the air conditioner;
comparing the set wind speed with the preset wind speed
When the set wind speed is smaller than the preset wind speed, controlling a fan of the air conditioner to operate according to the preset wind speed;
when the set wind speed is greater than or equal to the preset wind speed, controlling a fan of the air conditioner to operate according to the set wind speed.
CN202310891100.7A 2023-07-19 2023-07-19 Air conditioner and control method thereof Pending CN117006518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310891100.7A CN117006518A (en) 2023-07-19 2023-07-19 Air conditioner and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310891100.7A CN117006518A (en) 2023-07-19 2023-07-19 Air conditioner and control method thereof

Publications (1)

Publication Number Publication Date
CN117006518A true CN117006518A (en) 2023-11-07

Family

ID=88575580

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310891100.7A Pending CN117006518A (en) 2023-07-19 2023-07-19 Air conditioner and control method thereof

Country Status (1)

Country Link
CN (1) CN117006518A (en)

Similar Documents

Publication Publication Date Title
US20120303165A1 (en) Control system and method for both energy saving and comfort control in an air conditioning system
CN109458683B (en) Dry type radiation heat pump and unit type household air conditioner all-in-one machine and control method thereof
JP6416975B1 (en) Air source heat pump air conditioner
CN106440560B (en) The adjustable air-conditioning system of condensation area and its control method
CN213395597U (en) Air conditioner
CN104848497A (en) Air conditioner
CN111998565A (en) Dual-temperature air conditioning system and control method thereof
CN110748974A (en) Air conditioning system and air conditioning system control method
CN112815567A (en) Air conditioner and control method thereof
CN112032912A (en) Control method of multi-connected air conditioning system
CN111006301A (en) Carbon dioxide cascade heating system and control method thereof
JP2006317012A (en) Air conditioner
CN112710100A (en) Air conditioner and control method thereof
CN117006518A (en) Air conditioner and control method thereof
CN213955487U (en) Dehumidifying device capable of changing air quantity and refrigerant flow temperature regulation
CN114963442A (en) Air conditioner and control method thereof
JP4743223B2 (en) Air conditioner
CN108507047B (en) Air conditioning system and control method thereof
CN111609480A (en) Air conditioner refrigerating system and air conditioner
JP2001304652A (en) Air conditioner and its control method
CN113310140A (en) Dual-system air conditioner based on two evaporation temperatures and control method thereof
CN112555982A (en) Temperature and humidity double-control air conditioning system
JP2021014947A (en) Air conditioner and air conditioning system
CN112797660A (en) Air conditioner and control method thereof
CN212457128U (en) Air conditioning system and 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