CN110848827A - Dehumidification device, dehumidification control method, and storage medium - Google Patents

Dehumidification device, dehumidification control method, and storage medium Download PDF

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Publication number
CN110848827A
CN110848827A CN201911192299.4A CN201911192299A CN110848827A CN 110848827 A CN110848827 A CN 110848827A CN 201911192299 A CN201911192299 A CN 201911192299A CN 110848827 A CN110848827 A CN 110848827A
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temperature
air
pressure
dehumidification
processor
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CN201911192299.4A
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CN110848827B (en
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赵帅
白崇俨
魏留柱
朱兴丹
袁紫琪
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GD Midea Air Conditioning Equipment Co Ltd
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GD Midea Air Conditioning Equipment Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity

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

Abstract

The application provides a dehumidification device, a dehumidification control method and a readable storage medium, wherein the dehumidification device comprises: a processor; the supercharging expansion assembly is electrically connected with the processor and comprises an air outlet end and an air return end which can be communicated with a room, and a low-temperature output end and a high-temperature input end; the gas-liquid separator is arranged on the pipeline between the low-temperature output end and the high-temperature input end; the processor is further configured to execute the computer instructions to perform the steps of: the operation of the pressurization expansion assembly is controlled, so that air in a room is introduced into the pressurization expansion assembly through the air return end, after the air is subjected to pressure reduction and temperature reduction, the air is introduced into the gas-liquid separator, condensed water generated after the temperature reduction and pressure reduction is separated, the condensed water is converted into normal-temperature and normal-pressure air through the high-temperature input end, and the air is returned to the room through the air outlet end. By executing the technical scheme, air is directly used as a refrigerant to replace compound refrigerants adopted in the related technology, and the harm to the environment is reduced by combining the operation of the compressor and the expander.

Description

Dehumidification device, dehumidification control method, and storage medium
Technical Field
The present application relates to the field of home operation control, and in particular, to a dehumidification control method, a dehumidification device, and a computer-readable storage medium.
Background
In the related art, dehumidification is generally performed in the following manner; drive humid air gets into evaporimeter and condenser, makes humid air separate the aqueous vapor after the evaporimeter cooling produces moisture, and low temperature gas warms up behind the condenser to the normal atmospheric temperature scope after arrange to indoor, realizes the dehumidification process, nevertheless has following defect:
(1) most refrigerants are harmful to the environment, such as greenhouse effect and ozone layer holes.
(2) The heat exchanger is needed to exchange air heat, and the structure is complex.
Disclosure of Invention
The present application is directed to solving at least one of the problems of the prior art or the related art.
To this end, it is an object of the present application to propose a new dehumidification device.
Another object of the present application is to provide a dehumidification control method and a computer-readable storage medium.
To achieve at least one of the above objects, according to a first aspect of the present application, there is provided a dehumidifying apparatus, specifically comprising: a processor; the supercharging expansion assembly is electrically connected with the processor and comprises an air outlet end and an air return end which can be communicated with a room, and a low-temperature output end and a high-temperature input end; the gas-liquid separator is arranged on the pipeline between the low-temperature output end and the high-temperature input end; the processor is further configured to execute the computer instructions to perform the steps of: the operation of the pressurization expansion assembly is controlled, so that air in a room is introduced into the pressurization expansion assembly through the air return end, after the air is subjected to pressure reduction and temperature reduction, the air is introduced into the gas-liquid separator, condensed water generated after the temperature reduction and pressure reduction is separated, the condensed water is converted into normal-temperature and normal-pressure air through the high-temperature input end, and the air is returned to the room through the air outlet end.
In the technical scheme, the dehumidifying device comprises a processor, a pressurizing expansion assembly and a gas-liquid separator, wherein two external interfaces of the pressurizing expansion assembly, namely an air outlet end and an air return end, the air outlet end is communicated with an air inlet of a room, the air return end is communicated with the air outlet end of the room to construct an internal circulation structure between the room and the dehumidifying device, the pressurizing expansion assembly further comprises a low-temperature output end and a high-temperature input end, the low-temperature output end is a low-temperature low-pressure output end surface, the high-temperature input end is a high-temperature high-pressure input end, air output from the low-temperature low-pressure output end is lower than the air pressure and temperature in the room, so that partial condensed water can be generated, in the process of transmitting the low-temperature high-pressure input end, gas separated from the condensed water is guided into the high-temperature high-pressure, compared with the dehumidification scheme in the related technology, on one hand, the air is directly adopted as a refrigerant to replace a compound refrigerant adopted in the related technology, and the dehumidification effect on the air is realized while the air is used as the refrigerant by combining the operation of a compressor and an expander. The setting cost of refrigerant is saved to reduce the harm to the environment, on the other hand, need not set up the heat exchanger, thereby can simplify the setting of structure, on the other hand, the dehydrating unit who prescribes a limit to in this application can set up in the outdoor side again, and then reduces the occupation to the room inner space.
In the above technical solution, the pressure boost expansion assembly includes: the compressor and the expander are connected through a rotating shaft, the compressor is provided with an air outlet end and a high-temperature input end, and the expander is provided with an air return end and a low-temperature output end; the motor is electrically connected with the processor and is used for driving the rotating shaft to rotate; the motor drives the rotating shaft to rotate, so as to drive the compressor and the expander to operate, so that the air entering the compressor is boosted to be heated, and the air entering the expander is reduced in pressure and temperature; the processor is further configured to execute the computer instructions to perform the steps of: and controlling the motor to operate according to the specified rotating speed.
In the technical scheme, the supercharging expansion component comprises a compressor, an expander, a high-speed motor and a bearing, wherein the expander and the compressor are coaxially connected, the high-speed motor drives the compressor to do work on air, so that the air temperature and the air pressure are simultaneously increased, the expander is pushed by high-pressure air, partial work is compensated for the compressor through a rotating shaft, and the air temperature and the air pressure are reduced along with the work.
Specifically, the expander is provided with a low-temperature output end, indoor air entering the expander is cooled and depressurized through the operation of the expander, then the indoor air is discharged to a gas-liquid separator from the low-temperature input end, the air is dehumidified after gas-liquid separation, the dehumidified air is discharged into a compressor, the dehumidified air is acted through the compressor to obtain air at normal temperature and normal pressure, the air is discharged into the room again, and dehumidification is realized in the process of circulating and flowing indoor air.
In any one of the above solutions, the bearing includes: a circular bearing seat; and the elastic foil is arranged on the inner side wall of the bearing seat, and a lubricating gas film is arranged on the inner side wall of the elastic foil to support the rotating shaft.
In this technical scheme, foil dynamic pressure gas bearing includes the bearing frame and sets up in the inboard elasticity foil structure of bearing frame, and when motor drive pivot was high-speed to operate, rely on the relative high-speed motion between bearing frame and the foil, it provides the support for the pivot to form the dynamic pressure gas film, is favorable to promoting the high-speed moving stability of pivot.
Compared with a static pressure gas bearing and a magnetic suspension bearing, the foil dynamic pressure gas bearing has the advantages of simpler structure and lower cost, and is more suitable for being applied to dehumidification products.
In any one of the above technical solutions, the method further includes: the first temperature sensor is electrically connected with the processor and used for detecting the outlet temperature of the low-temperature output end; the processor is further configured to execute the computer instructions to perform the steps of: and configuring the rotating speed of the motor according to the relation between the dew point temperature and the outlet temperature of the low-temperature output end.
Among other things, it will be understood by those skilled in the art that the dew point temperature refers to the temperature at which the air cools to saturation without changes in both moisture content and air pressure, and therefore requires recalculation of the dew point temperature in conjunction with sensed outlet temperature to reconfigure the rotational speed of the motor under conditions of changes in moisture content and/or changes in air pressure.
In any one of the above technical solutions, the method further includes: the second temperature sensor and the pressure sensor are both electrically connected with the processor, the second temperature sensor is used for detecting the ambient temperature, and the pressure sensor is used for detecting the outlet pressure of the low-temperature output end; the processor is further configured to execute the computer instructions to perform the steps of: the dew point temperature is configured according to the ambient temperature and the outlet pressure.
Wherein the second temperature sensor may be disposed indoors or outdoors.
Specifically, the relative humidity can be expressed by the relative humidity of the humid air with pressure P and temperature T, i.e. the ratio of the mole fraction of water vapor to the mole fraction of saturated water vapor on the surface of pure water at the same temperature T and pressure P, so that the relative humidity is calculated by measuring the normal temperature (temperature measured by the second temperature sensor) and pressure (pressure measured by the pressure sensor) of the current gas, and then converted into the corresponding dew point temperature.
In any of the above solutions, the processor is further configured to execute the computer instructions to perform the following steps: if the temperature difference value between the dew point temperature and the outlet temperature is smaller than or equal to the temperature difference threshold value, controlling the motor to maintain the specified rotating speed; and if the temperature difference value is detected to be larger than the temperature difference threshold value, controlling the motor to increase the rotating speed until the temperature difference value is detected to be reduced to be smaller than or equal to the temperature difference threshold value.
In this technical scheme, compare the relation between dew point temperature and air-out temperature, if the difference in temperature value of dew point temperature and exit temperature is less than or equal to the difference in temperature threshold value, show that air-out temperature is more close with dew point temperature, the air current after the cooling step-down enters vapour and liquid separator, can separate out more moisture, thereby can reach better dehumidification effect, and if the difference in temperature value of dew point temperature and exit temperature is greater than the difference in temperature threshold value, show that the difference between air-out temperature and dew point temperature is great, the air current after the cooling step-down enters vapour and liquid separator, can't reach good dehumidification effect, consequently can improve motor speed through control, continue to cool down the step-down to the air in the expander, and then reduce the difference in temperature value of dew point temperature and exit temperature, increase the water yield of appearing, in order to promote dehumidification efficiency, finally reach good dehumidification effect.
Wherein the temperature difference threshold may be greater than or equal to 0 ℃ and less than or equal to 5 ℃, preferably, the temperature difference threshold may be greater than or equal to 1 ℃ and less than or equal to 3 ℃.
In any one of the above technical solutions, the method further includes: a humidity sensor electrically connected to the processor for detecting room humidity, the processor further executing computer instructions to perform the steps of: and configuring the specified rotating speed according to the relation between the room humidity and the humidity threshold, wherein the specified rotating speed is positively correlated with the difference between the room humidity and the humidity threshold.
In the technical scheme, a humidity sensor can be further arranged in the room, on one hand, through reasonably setting a humidity threshold value, when the humidity of the room is detected to be higher, the dehumidifying device can be triggered to automatically start and stop running, and manual operation steps of a user are reduced, on the other hand, the starting rotating speed of the motor is configured according to the relation between the humidity of the room and the humidity threshold value, namely, the specified rotating speed, if the difference value between the humidity of the room and the humidity threshold value is larger, the motor can be controlled to run at a higher rotating speed in the initial stage, if the difference value between the humidity of the room and the humidity threshold value is smaller, the motor can be controlled to run at a lower rotating speed in the initial stage, and then the rotating speed of the motor is further adjusted by combining the relation between the dew point temperature and the outlet.
According to the technical scheme of the second aspect of the application, a dehumidification control method is provided, and is suitable for a dehumidification device, and the dehumidification device includes pressure boost expansion unit and vapour and liquid separator, and pressure boost expansion unit includes air-out end and return air end and low temperature output and high temperature input that can communicate with the room, and the dehumidification control method includes: controlling the operation of the pressurization expansion assembly to start the dehumidification operation; detecting the dew point temperature and the outlet temperature of the low-temperature output end; the rotating speed of a motor in the pressurizing expansion assembly is configured according to the relation between the dew point temperature and the outlet temperature, wherein the motor is controlled to operate, air in a room is introduced into the pressurizing expansion assembly through an air return end, and is introduced into a gas-liquid separator after being subjected to pressure reduction and temperature reduction so as to separate condensed water generated after temperature reduction and pressure reduction, the condensed water is converted into normal-temperature normal-pressure air through a high-temperature input end, and the normal-temperature normal-pressure air returns to the room through an air outlet end.
In the technical scheme, the supercharging expansion assembly further comprises a low-temperature output end and a high-temperature input end, the low-temperature output end is a low-temperature low-pressure output end surface, the high-temperature input end is a high-temperature high-pressure input end, air output from the low-temperature low-pressure output end is lower than air pressure and temperature in a room, so that partial condensed water can be generated, in the process of transmitting the condensed water to the high-temperature high-pressure input end, gas separated from the condensed water is led into the high-temperature high-pressure input end through a gas-liquid separator, the room is discharged back to the room after the gas is processed to obtain normal-temperature normal-pressure gas, the dehumidifying function is realized, air flow circulation is realized by continuously inputting the air in the room to a dehumidifying device, and a better dehumidifying effect is finally achieved. The operation of the compressor and the expander is combined, and the dehumidification effect of the air is realized while the air is used as a refrigerant. The setting cost of refrigerant is saved to reduce the harm to the environment, on the other hand, need not set up the heat exchanger, thereby can simplify the setting of structure, on the other hand, the dehydrating unit who prescribes a limit to in this application can set up in the outdoor side again, and then reduces the occupation to the room inner space.
In addition, the dew point temperature refers to the temperature of air when the air is cooled to saturation under the condition that the water vapor content and the air pressure are not changed, so that the dew point temperature needs to be calculated again under the condition that the water vapor content and/or the air pressure are changed, the rotating speed of the motor is reconfigured by combining the detected outlet temperature, specifically, whether the current rotating speed of the motor can meet the dehumidification requirement is determined by comparing the relation between the dew point temperature and the air outlet temperature, and therefore the rotating speed of the motor is adjusted under the condition that the current rotating speed of the motor cannot meet the dehumidification requirement, and efficient dehumidification is achieved.
In the above technical solution, the method further comprises: and the dew point temperature is configured according to the ambient temperature and the outlet pressure of the low-temperature output end.
In this solution, the relative humidity can be represented by the relative humidity of the humid air with pressure P and temperature T, i.e. the ratio of the mole fraction of water vapor to the mole fraction of saturated water vapor on the surface of pure water at the same temperature T and pressure P, so that the relative humidity is calculated by measuring the normal temperature (the temperature measured by the second temperature sensor) and the pressure (the pressure measured by the pressure sensor) of the current gas, and then converted into the corresponding dew point temperature.
In any one of the above technical solutions, configuring the rotation speed of the motor in the pressure boost expansion assembly according to the relationship between the dew point temperature and the outlet temperature specifically includes: if the temperature difference value between the dew point temperature and the outlet temperature is smaller than or equal to the temperature difference threshold value, controlling the motor to maintain the current rotating speed; and if the temperature difference value is detected to be larger than the temperature difference threshold value, controlling the motor to increase the rotating speed until the temperature difference value is detected to be reduced to be smaller than or equal to the temperature difference threshold value, and stopping increasing the rotating speed.
In this technical scheme, compare the relation between dew point temperature and air-out temperature, if the difference in temperature value of dew point temperature and exit temperature is less than or equal to the difference in temperature threshold value, show that air-out temperature is more close with dew point temperature, the air current after the cooling step-down enters vapour and liquid separator, can separate out more moisture, thereby can reach better dehumidification effect, and if the difference in temperature value of dew point temperature and exit temperature is greater than the difference in temperature threshold value, show that the difference between air-out temperature and dew point temperature is great, the air current after the cooling step-down enters vapour and liquid separator, can't reach good dehumidification effect, consequently can improve motor speed through control, continue to cool down the step-down to the air in the expander, and then reduce the difference in temperature value of dew point temperature and exit temperature, increase the water yield of appearing, in order to promote dehumidification efficiency, finally reach good dehumidification effect.
In any one of the above technical solutions, configuring the dew point temperature according to the ambient temperature and the outlet pressure of the low temperature output end, further includes: acquiring the ambient temperature, the outlet pressure and the outlet temperature according to a preset acquisition period so as to determine the relationship between the temperature difference value and the temperature difference threshold value after each acquisition; and if the temperature difference value is changed from being smaller than or equal to the temperature difference threshold value to being larger than the temperature difference threshold value, controlling the motor to increase the rotating speed.
In the technical scheme, after the rotating speed of the motor is adjusted, the outlet pressure and the outlet temperature of the low-temperature output end can be changed, so that the relationship between the dew point temperature and the temperature difference value between the dew point temperature and the outlet temperature and the temperature difference threshold value can also be changed.
In any one of the above technical solutions, controlling the operation of the pressure boost expansion assembly to start the dehumidification operation specifically includes: and configuring the starting rotating speed of the motor according to the relation between the room humidity and the humidity threshold value.
In the technical scheme, the starting rotating speed of the motor is configured according to the relation between the room humidity and the humidity threshold value, namely the specified rotating speed, if the difference value between the room humidity and the humidity threshold value is large, the motor can be controlled to operate at a high rotating speed in the initial stage, if the difference value between the room humidity and the humidity threshold value is small, the motor can be controlled to operate at a low rotating speed in the initial stage, and then the rotating speed of the motor is further adjusted by combining the relation between the dew point temperature and the outlet temperature, so that the purpose of efficient dehumidification is achieved.
According to a third aspect of the present application, there is provided a computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the steps of the dehumidification control method according to any one of the second aspect.
One or more technical solutions provided by the present application have at least the following technical effects or advantages:
(1) on one hand, air is directly used as a refrigerant to replace compound refrigerants adopted in the related technology, and the operation of a compressor and an expander is combined, so that the dehumidification effect on the air is realized while the air is used as the refrigerant, the setting cost of the refrigerant is saved, and the harm to the environment is reduced.
(2) The foil dynamical pressure gas bearing is used, a dynamical pressure lubricating pressure gas film is generated by means of high-speed relative motion between the shaft and the bearing, the assembly requirement is low, the rotor misalignment is prevented, the stability at high speed is good, and compared with a static pressure gas bearing and a magnetic suspension bearing, the foil dynamical pressure gas bearing is simpler in structure, lower in cost and more suitable for a household air conditioner.
(3) The heat exchanger is not required to be arranged, and the structure arrangement can be simplified.
(4) The dehumidifying device may be disposed at an outdoor side, thereby reducing an occupation of a space in a room.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 illustrates a schematic structural diagram of a dehumidification apparatus according to one embodiment of the present application;
FIG. 2 shows a schematic structural diagram of a dehumidification apparatus according to another embodiment of the present application;
FIG. 3 shows a schematic structural diagram of a dehumidification apparatus according to yet another embodiment of the present application;
FIG. 4 illustrates a flow diagram of a dehumidification control method, according to an embodiment of the present application;
FIG. 5 illustrates a flow diagram of a dehumidification control method, according to another embodiment of the present application;
FIG. 6 shows a schematic block diagram of a dehumidification apparatus according to one embodiment of the present application.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:
102 gas-liquid separator, 104 expander, 106 motor, 108 bearing, 110 compressor, 112 first temperature sensor, 114 second temperature sensor, 116 pressure sensor and 118 humidity sensor.
Detailed Description
In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
Example one
As shown in fig. 1, the dehumidifying apparatus includes: a processor (not shown in the figures, see fig. 6), a booster expansion assembly and a gas-liquid separator 102.
Wherein the processor is configured to execute the computer instructions.
And the pressurizing expansion assembly is electrically connected with the processor and comprises an air outlet end and an air return end which can be communicated with a room, and a low-temperature output end and a high-temperature input end.
Wherein, two external interfaces of pressure boost expansion unit, air-out end and return air end promptly, the air intake intercommunication in air-out end and room, the air-out end intercommunication in return air end and room to construct the inner loop structure between room and the dehydrating unit, pressure boost expansion unit still includes low temperature output and high temperature input end, the low temperature output specifically is the low temperature low pressure output terminal surface high temperature input specifically is high temperature high pressure input, the air of following the output of low temperature low pressure is lower for the air pressure in the room and temperature, thereby can produce partial comdenstion water.
And the gas-liquid separator 102 is arranged on a pipeline between the low-temperature output end and the high-temperature input end.
In the process of transmitting low-temperature low-pressure gas to the high-temperature high-pressure input end, the gas after condensed water separation is guided into the high-temperature high-pressure input end through the gas-liquid separator 102, the gas is processed to obtain normal-temperature normal-pressure gas and then is discharged back to a room to realize a dehumidification function, and the air in the room is continuously input into the dehumidification device to realize air circulation and finally achieve a good dehumidification effect.
In this embodiment, compared with the dehumidification scheme in the related art, on one hand, air is directly used as the refrigerant instead of the compound refrigerant used in the related art, and the dehumidification effect on air is achieved while the air is used as the refrigerant in combination with the operations of the compressor 110 and the expander 104. The setting cost of refrigerant is saved to reduce the harm to the environment, on the other hand, need not set up the heat exchanger, thereby can simplify the setting of structure, on the other hand, the dehydrating unit who prescribes a limit to in this application can set up in the outdoor side again, and then reduces the occupation to the room inner space.
Based on the above structural definition, the processor is further configured to execute the computer instructions to perform the following steps: the operation of the pressurization expansion assembly is controlled, so that air in a room is introduced into the pressurization expansion assembly through the air return end, after the pressurization expansion assembly is subjected to pressure reduction and temperature reduction, the air is introduced into the gas-liquid separator 102, so that condensed water generated after the temperature reduction and the pressure reduction is separated, the condensed water is converted into air at normal temperature and normal pressure through the high-temperature input end, and the air is returned to the room through the air outlet end.
In some embodiments, the structure of the booster expansion assembly is specifically defined to include: the compressor 110 and the expander 104 are connected through a rotating shaft, the compressor 110 is provided with an air outlet end and a high-temperature input end, and the expander 104 is provided with an air return end and a low-temperature output end; the motor 106 is electrically connected with the processor and is used for driving the rotating shaft to rotate; the bearing 108 is arranged at the joint of the compressor 110 and the rotating shaft and the joint of the expander 104 and the rotating shaft, the motor 106 drives the rotating shaft to rotate to drive the compressor 110 and the expander 104 to operate, so that the pressure of the air entering the compressor 110 is increased, the temperature of the air is increased, and the pressure of the air entering the expander 104 is decreased; the processor is further configured to execute the computer instructions to perform the steps of: the motor 106 is controlled to operate according to a specified rotation speed.
In this embodiment, the pressure boost expansion assembly includes a compressor 110, an expander 104, a high speed motor 106 and a bearing 108, the expander 104 and the compressor 110 are coaxially connected, the high speed motor 106 drives the compressor 110 to work on the air, so that the temperature and the pressure of the air are simultaneously increased, the expander 104 is pushed by the high pressure air, part of the work is compensated by the rotating shaft to the compressor 110, and the temperature and the pressure of the air are reduced accordingly.
Specifically, the expander 104 is provided with a low-temperature output end, after the indoor air entering the expander 104 is cooled and depressurized through the operation of the expander 104, the indoor air is discharged to the gas-liquid separator 102 from the low-temperature input end, the air is dehumidified after gas-liquid separation, the dehumidified air is discharged into the compressor 110, the dehumidified air is acted by the compressor 110 to obtain the air at normal temperature and normal pressure, and the air is discharged into the room again, so that dehumidification is realized in the process of indoor air circulation flow.
In some embodiments, the bearing 108 described above is further defined: the bearing 108 includes: a circular bearing seat; the elastic foil is arranged on the inner side wall of the bearing seat, and a lubricating gas film is arranged on the inner side wall of the elastic foil to support the rotating shaft, so that a foil dynamic pressure gas bearing is defined.
In this embodiment, the foil dynamical pressure gas bearing, that is, the bearing 108 includes a bearing seat and an elastic foil structure disposed inside the bearing seat, when the motor 106 drives the rotating shaft to operate at a high speed, a dynamical pressure gas film is formed to support the rotating shaft by virtue of the relative high-speed motion between the bearing seat and the foil, which is beneficial to improving the stability of the rotating shaft in high-speed operation.
Compared with a static pressure gas bearing and a magnetic suspension bearing, the foil dynamic pressure gas bearing has the advantages of simpler structure and lower cost, and is more suitable for being applied to dehumidification products.
Example two
As shown in fig. 2, in some embodiments, the dehumidifying apparatus further comprises: a first temperature sensor 112, a second temperature sensor 114, and a pressure sensor 116.
The first temperature sensor 112 is electrically connected with the processor and is used for detecting the outlet temperature of the low-temperature output end; the processor is further configured to execute the computer instructions to perform the steps of: the rotational speed of the motor 106 is configured according to the relationship between the dew point temperature and the outlet temperature of the low temperature output.
Among other things, it will be understood by those skilled in the art that the dew point temperature refers to the temperature at which the air cools to saturation without changes in both moisture content and air pressure, and therefore requires recalculation of the dew point temperature in conjunction with sensed outlet temperature to reconfigure the rotational speed of the motor 106 under conditions of changes in moisture content and/or changes in air pressure.
The second temperature sensor 114 and the pressure sensor 116 are both electrically connected with the processor, the second temperature sensor 114 is used for detecting the ambient temperature, and the pressure sensor 116 is used for detecting the outlet pressure of the low-temperature output end; the processor is further configured to execute the computer instructions to perform the steps of: the dew point temperature is configured according to the ambient temperature and the outlet pressure.
Specifically, the relative humidity can be expressed by the relative humidity of the humid air with pressure P and temperature T, i.e. the ratio of the mole fraction of water vapor to the mole fraction of saturated water vapor on the surface of pure water at the same temperature T and pressure P, so that the relative humidity is calculated by measuring the normal temperature (the temperature measured by the second temperature sensor 114) and the pressure (the pressure measured by the pressure sensor 116) of the current gas, and then converted into the corresponding dew point temperature.
In conjunction with the above-described arrangement of sensors, the processor is further configured to execute computer instructions to perform the steps of: if the temperature difference value between the dew point temperature and the outlet temperature is smaller than or equal to the temperature difference threshold value, controlling the motor 106 to maintain the specified rotating speed; if the temperature difference value is detected to be greater than the temperature difference threshold value, the motor 106 is controlled to increase the rotating speed until the temperature difference value is detected to be reduced to be less than or equal to the temperature difference threshold value.
In this embodiment, the relationship between the dew point temperature and the outlet air temperature is compared, if the temperature difference between the dew point temperature and the outlet temperature is less than or equal to the temperature difference threshold, which indicates that the outlet air temperature is closer to the dew point temperature, the cooled and depressurized air flow can separate out more water after entering the gas-liquid separator 102, thereby achieving good dehumidification effect, and if the temperature difference between the dew point temperature and the outlet temperature is larger than the temperature difference threshold value, indicating that the difference between the outlet air temperature and the dew point temperature is large, the air flow after temperature reduction and pressure reduction can not achieve good dehumidification effect after entering the gas-liquid separator 102, therefore, the air in the expander 104 can be further cooled and depressurized by controlling the rotation speed of the motor 106 to be increased, and then reduce the temperature difference value of dew point temperature and exit temperature, increase the water yield of appearing to promote dehumidification efficiency, finally reach good dehumidification effect.
Wherein the temperature difference threshold may be greater than or equal to 0 ℃ and less than or equal to 5 ℃, preferably, the temperature difference threshold may be greater than or equal to 1 ℃ and less than or equal to 3 ℃.
EXAMPLE III
As shown in fig. 3, in some embodiments, the dehumidifying apparatus further comprises: a humidity sensor 118 electrically connected to the processor for detecting room humidity, the processor further executing computer instructions to perform the steps of: and configuring the specified rotating speed according to the relation between the room humidity and the humidity threshold, wherein the specified rotating speed is positively correlated with the difference between the room humidity and the humidity threshold.
In this embodiment, a humidity sensor 118 may also be disposed in the room, on one hand, by reasonably setting a humidity threshold, when it is detected that the room humidity is high, the dehumidifying apparatus may be triggered to automatically start and stop running, so as to reduce manual operation steps of a user, and on the other hand, the starting rotational speed of the motor 106 is configured according to a relationship between the room humidity and the humidity threshold, that is, a specified rotational speed, if a difference between the room humidity and the humidity threshold is large, the motor 106 may be controlled to run at a high rotational speed in an initial stage, if a difference between the room humidity and the humidity threshold is small, the motor 106 may be controlled to run at a low rotational speed in the initial stage, and then the rotational speed of the motor 106 may be further adjusted according to a relationship between the dew point temperature and the outlet temperature, so as to achieve the purpose.
Example four
As shown in fig. 4, a dehumidification control method according to an embodiment of the present application includes:
and step 402, controlling the operation of the pressurization expansion assembly to start the dehumidification operation.
The method comprises the following steps of controlling a pressurization expansion assembly to operate, specifically controlling a motor in the pressurization expansion assembly to start to operate so as to control a compressor and an expansion machine to work air.
Step 404, detecting the dew point temperature and the outlet temperature of the low temperature output end.
Wherein, a calculation mode of the dew point temperature comprises the following steps: and the dew point temperature is configured according to the ambient temperature and the outlet pressure of the low-temperature output end.
And 406, configuring the rotation speed of a motor in the booster expansion assembly according to the relation between the dew point temperature and the outlet temperature.
Wherein, through the operation of control motor, introduce pressure boost expansion assembly with the air in the room through the return air end, after carrying out the step-down cooling, guide into vapour and liquid separator to the comdenstion water that produces after the separation cooling step-down changes normal atmospheric temperature air into through the high temperature input, returns the room by the air-out end.
In some embodiments, one possible implementation manner of the step 406 is: if the temperature difference value between the dew point temperature and the outlet temperature is smaller than or equal to the temperature difference threshold value, controlling the motor to maintain the current rotating speed; and if the temperature difference value is detected to be larger than the temperature difference threshold value, controlling the motor to increase the rotating speed until the temperature difference value is detected to be reduced to be smaller than or equal to the temperature difference threshold value, and stopping increasing the rotating speed.
In this embodiment, compare the relation between dew point temperature and air-out temperature, if the difference between dew point temperature and exit temperature is less than or equal to the difference threshold value, show that air-out temperature is more close with dew point temperature, the air current after the cooling step-down enters vapour and liquid separator, can separate out more moisture, thereby can reach better dehumidification effect, and if the difference between dew point temperature and exit temperature is greater than the difference threshold value, show that the difference between air-out temperature and dew point temperature is great, the air current after the cooling step-down enters vapour and liquid separator, can't reach good dehumidification effect, consequently can improve motor speed through control, continue to cool down the step-down to the air in the expander, and then reduce the difference between dew point temperature and exit temperature, increase the water yield that separates out, in order to promote dehumidification efficiency, finally reach good dehumidification effect.
EXAMPLE five
As shown in fig. 5, in some embodiments, configuring the dew point temperature according to the ambient temperature and the outlet pressure of the low temperature output may be further refined: the method comprises the following steps:
step 502, collecting the ambient temperature, the outlet pressure and the outlet temperature according to a preset collection period to determine the relationship between the temperature difference value and the temperature difference threshold value after each collection;
step 504, if the temperature difference value between the dew point temperature and the outlet temperature is detected to be less than or equal to the temperature difference threshold value, controlling the motor to maintain the current rotating speed;
and step 506, if the temperature difference value is changed from being smaller than or equal to the temperature difference threshold value to being larger than the temperature difference threshold value, controlling the motor to increase the rotating speed.
Step 508, if the temperature difference value is detected to be larger than the temperature difference threshold value, controlling the motor to increase the rotating speed;
and 510, stopping increasing the rotating speed when the temperature difference value is detected to be reduced from being larger than the temperature difference threshold value to being smaller than or equal to the temperature difference threshold value.
In this embodiment, after the rotation speed of the motor is adjusted, both the outlet pressure and the outlet temperature of the low-temperature output end change, and therefore the relationship between the dew point temperature and the temperature difference between the dew point temperature and the outlet temperature and the temperature difference threshold value may also change.
EXAMPLE six
In some embodiments, before the speed adjustment, the following control steps can be further included: and configuring the starting rotating speed of the motor according to the relation between the room humidity and the humidity threshold value.
In this embodiment, the starting rotation speed of the motor is configured according to the relationship between the room humidity and the humidity threshold, that is, the designated rotation speed, if the difference between the room humidity and the humidity threshold is large, the motor may be controlled to operate at a higher rotation speed in the initial stage, if the difference between the room humidity and the humidity threshold is small, the motor may be controlled to operate at a lower rotation speed in the initial stage, and then the rotation speed of the motor is further adjusted according to the relationship between the dew point temperature and the outlet temperature, so as to achieve the purpose of efficient dehumidification.
As shown in fig. 6, the dehumidification device according to the embodiment of the present application further includes: a memory 602 and a processor 604.
A memory 602 for storing program code; the processor 604, i.e. the processor in the above embodiments, is configured to call a program code to execute the dehumidification control method of the dehumidification device in any one of the above embodiments.
In an embodiment of the present application, there is provided a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, realizes the steps of the dehumidification control method of the dehumidification apparatus according to any one of the above-mentioned claims.
In this embodiment, the computer program is executed by the processor to implement the steps of the method for controlling a dehumidifying apparatus according to any one of the above embodiments, so that all the advantageous technical effects of the method for controlling a dehumidifying apparatus are achieved, and are not described herein again.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (13)

1. A dehumidification apparatus, comprising:
a processor;
the supercharging expansion assembly is electrically connected with the processor and comprises an air outlet end and an air return end which can be communicated with a room, and a low-temperature output end and a high-temperature input end;
the gas-liquid separator is arranged on a pipeline between the low-temperature output end and the high-temperature input end;
the processor is further configured to execute the computer instructions to perform the steps of: and controlling the operation of the pressurization expansion assembly to introduce air in the room into the pressurization expansion assembly through the air return end, after the air is subjected to pressure reduction and temperature reduction, introducing the air into the gas-liquid separator to separate condensed water generated after the temperature reduction and the pressure reduction, converting the condensed water into normal-temperature and normal-pressure air through the high-temperature input end, and returning the air to the room through the air outlet end.
2. A dehumidifying device as claimed in claim 1 wherein the booster expansion module comprises:
the compressor and the expander are connected through a rotating shaft, the compressor is provided with the air outlet end and the high-temperature input end, and the expander is provided with the air return end and the low-temperature output end;
the motor is electrically connected with the processor and is used for driving the rotating shaft to rotate;
the motor drives the rotating shaft to rotate, so as to drive the compressor and the expander to operate, so that the air entering the compressor is boosted and heated, and the air entering the expander is reduced in pressure and temperature;
the processor is further configured to execute the computer instructions to perform the steps of: and controlling the motor to operate according to the specified rotating speed.
3. A dehumidifying device as claimed in claim 2 wherein the bearing comprises:
a circular bearing seat;
and the elastic foil is arranged on the inner side wall of the bearing seat, and a lubricating gas film is arranged on the inner side wall of the elastic foil to support the rotating shaft.
4. A dehumidifying device as claimed in claim 2, further comprising:
the first temperature sensor is electrically connected with the processor and used for detecting the outlet temperature of the low-temperature output end;
the processor is further configured to execute the computer instructions to perform the steps of: and configuring the rotating speed of the motor according to the relation between the dew point temperature of the low-temperature output end and the outlet temperature.
5. A dehumidifying device as claimed in claim 4, further comprising:
the second temperature sensor and the pressure sensor are both electrically connected with the processor, the second temperature sensor is used for detecting the ambient temperature, and the pressure sensor is used for detecting the outlet pressure of the low-temperature output end;
the processor is further configured to execute the computer instructions to perform the steps of: configuring the dew point temperature according to the ambient temperature and the outlet pressure.
6. A dehumidification apparatus according to claim 4, wherein said processor is further configured to execute computer instructions to perform the steps of:
if the temperature difference value between the dew point temperature and the outlet temperature is smaller than or equal to a temperature difference threshold value, controlling the motor to maintain the specified rotating speed;
and if the temperature difference value is detected to be larger than the temperature difference threshold value, controlling the motor to increase the rotating speed until the temperature difference value is detected to be reduced to be smaller than or equal to the temperature difference threshold value.
7. A dehumidifying device as claimed in any one of claims 2 to 6 further comprising:
a humidity sensor electrically connected with the processor for detecting the room humidity
The processor is further configured to execute the computer instructions to perform the steps of: configuring the specified rotation speed according to the relation between the room humidity and a humidity threshold value,
wherein the specified rotation speed is positively correlated with a difference between the room humidity and the humidity threshold.
8. A dehumidification control method is suitable for a dehumidification device and is characterized in that the dehumidification device comprises a pressurization expansion assembly and a gas-liquid separator, the pressurization expansion assembly comprises an air outlet end and an air return end which can be communicated with a room, and a low-temperature output end and a high-temperature input end, and the dehumidification control method comprises the following steps:
controlling the operation of the booster expansion assembly to start a dehumidification operation;
detecting the dew point temperature and the outlet temperature of the low-temperature output end;
configuring a rotational speed of a motor in the booster expansion assembly according to a relationship between the dew point temperature and the outlet temperature,
wherein, through control the motor operation, pass through the air in the room the return air end is introduced pressure boost expansion assembly, after carrying out the step-down cooling, leading-in vapour and liquid separator to the comdenstion water that produces after the separation cooling step-down, through the high temperature input end changes normal atmospheric temperature air into, through the air-out end returns the room.
9. The dehumidification control method according to claim 8, further comprising:
and configuring the dew point temperature according to the ambient temperature and the outlet pressure of the low-temperature output end.
10. The dehumidification control method according to claim 9, wherein the configuring the rotation speed of the motor in the boost expansion assembly according to the relationship between the dew point temperature and the outlet temperature specifically comprises:
if the temperature difference value between the dew point temperature and the outlet temperature is smaller than or equal to the temperature difference threshold value, controlling the motor to maintain the current rotating speed;
and if the temperature difference value is detected to be larger than the temperature difference threshold value, controlling the motor to increase the rotating speed until the temperature difference value is detected to be reduced to be smaller than or equal to the temperature difference threshold value, and stopping increasing the rotating speed.
11. The dehumidification control method of claim 10, wherein the dew point temperature is configured according to an ambient temperature and an outlet pressure of the cryogenic output, further comprising:
acquiring the ambient temperature, the outlet pressure and the outlet temperature according to a preset acquisition period so as to determine the relationship between the temperature difference value and the temperature difference threshold value after each acquisition;
and if the temperature difference value is changed from being smaller than or equal to the temperature difference threshold value to being larger than the temperature difference threshold value, controlling the motor to increase the rotating speed.
12. The dehumidification control method according to any one of claims 8 to 11, wherein the controlling the operation of the pressure-increasing expansion assembly to start the dehumidification operation specifically comprises:
and configuring the starting rotating speed of the motor according to the relation between the room humidity and the humidity threshold value.
13. A computer-readable storage medium having an operation control program stored thereon, wherein the operation control program, when executed by a processor, implements the dehumidification control method according to any one of claims 8 to 11.
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CN104930744A (en) * 2015-06-10 2015-09-23 同济大学 Pure electric vehicle heat pump air conditioner without external heat exchanger
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08210739A (en) * 1995-02-06 1996-08-20 Matsushita Electric Ind Co Ltd Motor-operated expansion valve control device for air-conditioner
CN101881494A (en) * 2010-06-29 2010-11-10 浙江大学 Air compression type cooling and dehumidifying air-conditioning system
CN103743061A (en) * 2013-12-27 2014-04-23 杭州悦居环境设备有限公司 Dew point dehumidifier control method
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