CN111578415B - Radiation air conditioner and compressor protection control method and device - Google Patents

Radiation air conditioner and compressor protection control method and device Download PDF

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Publication number
CN111578415B
CN111578415B CN202010450554.7A CN202010450554A CN111578415B CN 111578415 B CN111578415 B CN 111578415B CN 202010450554 A CN202010450554 A CN 202010450554A CN 111578415 B CN111578415 B CN 111578415B
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China
Prior art keywords
air conditioner
compressor
radiation air
temperature
radiation
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CN111578415A (en
Inventor
曾昭顺
陈枫
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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
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0089—Systems using radiation from walls or panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/021—Inverters therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor

Abstract

The invention discloses a radiation air conditioner and a compressor protection control method and device, wherein the compressor protection control method comprises the following steps: firstly, when the radiation air conditioner enters a radiation mode and is in a stable operation state, acquiring the evaporation temperature of the radiation air conditioner and the temperature parameter of a compressor, then, judging the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor, and finally. And controlling the running frequency of the compressor according to the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor so as to prevent the compressor from liquid impact. According to the method for protecting and controlling the compressor of the radiation air conditioner, the running state of the radiation air conditioner in a cooling mode or a heating mode can be well adapted, and the damage to the compressor and the radiation air conditioner caused by liquid impact of the compressor can be prevented.

Description

Radiation air conditioner and compressor protection control method and device
Technical Field
The invention relates to the technical field of air conditioners, in particular to a radiation air conditioner and a compressor protection control method and device.
Background
The air conditioner in the related art blows cold air or hot air after heat exchange of an indoor unit to the indoor through operation of an indoor fan so as to refrigerate or heat the indoor, therefore, when the cold air or the hot air is blown to a person, use experience of a user is influenced, and the radiation air conditioner in the related art does not operate because the indoor fan does not operate or does not have the indoor fan, so that a compressor is easy to have a risk of liquid impact during operation.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, a first object of the present invention is to provide a method for protecting and controlling a compressor of a radiant air conditioner, which can prevent the compressor from liquid impact.
A second object of the present invention is to provide a computer readable storage medium for implementing the above-mentioned compressor protection control method of a radiant air conditioner.
A third objective of the present invention is to provide a radiation air conditioner capable of implementing the above-mentioned method for protecting and controlling the compressor of the radiation air conditioner.
A fourth object of the present invention is to provide a compressor protection control device of a radiation air conditioner.
A fifth object of the present invention is to provide a radiant air conditioner having the compressor protection control apparatus of the above radiant air conditioner.
According to the compressor protection control method of the radiation air conditioner provided by the embodiment of the invention, the radiation air conditioner comprises a heat exchanger, and the heat exchanger comprises: the compressor protection control method comprises the following steps of: when the radiation air conditioner enters a radiation mode and is in a stable operation state, acquiring the evaporation temperature of the radiation air conditioner and the temperature parameter of a compressor; judging the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor; and controlling the running frequency of the compressor according to the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor so as to prevent the compressor from liquid impact.
According to the compressor protection control method of the radiation air conditioner, the operation frequency of the compressor is regulated and controlled by acquiring the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor through the radiation air conditioner and judging the relation between the parameters, so that the method not only can be well suitable for the operation state of the radiation air conditioner in a cooling mode or a heating mode, but also can prevent the compressor from being damaged by liquid impact.
In some embodiments of the present invention, the temperature parameter of the compressor comprises a compressor return air temperature, wherein controlling the operating frequency of the compressor according to the relationship between the evaporating temperature of the radiant air conditioner and the temperature parameter of the compressor comprises: if the evaporation temperature of the radiation air conditioner is greater than the sum of the return air temperature of the compressor and a preset temperature threshold, controlling the running frequency of the compressor to be kept unchanged; if the evaporation temperature of the radiation air conditioner is less than or equal to the sum of the return air temperature of the compressor and a preset temperature threshold and is greater than the return air temperature of the compressor, controlling the compressor to prohibit frequency increase; and if the evaporation temperature of the radiation air conditioner is less than or equal to the return air temperature of the compressor, controlling the running frequency of the compressor to reduce a preset frequency threshold.
In some embodiments of the present invention, when the radiation air conditioner is in cooling operation, the evaporation temperature of the radiation air conditioner is the indoor heat exchanger temperature of the radiation air conditioner; when the radiation air conditioner is in heating operation, the evaporation temperature of the radiation air conditioner is the temperature of an outdoor heat exchanger of the radiation air conditioner.
In some embodiments of the present invention, when the time that the compressor operates at the constant operating frequency reaches a preset time, or the operating parameter of the radiation air conditioner remains unchanged and the temperature of any one test point in the radiation air conditioner remains unchanged within the preset time, or the operating voltage of the radiation air conditioner remains unchanged and the variation range of the operating current of the radiation air conditioner within the preset time is within a preset current fluctuation range, it is determined that the radiation air conditioner is in the stable operating state.
The present invention also provides a computer-readable storage medium that can implement the compressor protection control method of the radiation air conditioner of the above-described embodiment.
According to the computer-readable storage medium of an embodiment of the present invention, a compressor protection control program of a radiation air conditioner is stored thereon, which implements a compressor protection control method of the radiation air conditioner when being executed by a processor.
Therefore, according to the computer-readable storage medium provided by the embodiment of the invention, the frequency of the compressor can be well controlled, so that the risk of liquid impact of the compressor is prevented.
The invention also provides a radiation air conditioner which can realize the compressor protection control method of the radiation air conditioner.
According to the embodiment of the present invention, the radiation air conditioner includes: a heat exchanger, the heat exchanger comprising: the heat dissipation device comprises a micro-channel core body and heat dissipation pieces, wherein the micro-channel core body is provided with a plurality of channels for heat exchange media to flow, the heat dissipation pieces are arranged on two opposite sides of the micro-channel core body in the thickness direction, and the heat dissipation pieces are suitable for dissipating heat through radiation; a memory, a processor and a compressor protection control program of a radiation air conditioner stored on the memory and operable on the processor, the processor implementing the compressor protection control method of the radiation air conditioner as claimed in any one of claims 1 to 4 when executing the compressor protection control program.
Therefore, according to the radiation air conditioner provided by the embodiment of the invention, the radiation air conditioner and the compressor can be better operated through the protection control method of the compressor of the radiation air conditioner, so that the indoor temperature can be adjusted without wind, and the user experience is good.
The invention also provides a compressor protection control device of the radiation air conditioner.
According to the compressor protection control device of the radiation air conditioner of the embodiment of the present invention, the radiation air conditioner includes a heat exchanger, and the heat exchanger includes: the compressor protection control device comprises a micro-channel core body and radiating pieces, wherein the micro-channel core body is provided with a plurality of channels for heat exchange media to flow, the radiating pieces are arranged on two opposite sides of the micro-channel core body in the thickness direction, the radiating pieces are suitable for radiating through radiation, and the compressor protection control device comprises: the acquisition module is used for acquiring the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor when the radiation air conditioner enters a radiation mode and is in a stable operation state; the judging module is used for judging the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor; and the protection control module is used for controlling the running frequency of the compressor according to the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor so as to prevent the compressor from generating liquid impact.
According to the compressor frequency control device of the radiation air conditioner, the radiation air conditioner can radiate and conduct temperature better through the arranged heat exchanger so as to refrigerate or heat indoor environment better, and the radiation air conditioner can be controlled better through the arranged acquisition module, the judgment module and the protection control module, so that the running frequency of the compressor is controlled better, and liquid impact of the compressor is prevented.
According to the compressor protection control device of the radiation air conditioner, the temperature parameter of the compressor comprises the return air temperature of the compressor, wherein the protection control module is further used for controlling the running frequency of the compressor to be kept unchanged when the evaporation temperature of the radiation air conditioner is greater than the sum of the return air temperature of the compressor and a preset temperature threshold; when the evaporation temperature of the radiation air conditioner is less than or equal to the sum of the return air temperature of the compressor and a preset temperature threshold and is greater than the return air temperature of the compressor, controlling the compressor to prohibit frequency increase; and when the evaporation temperature of the radiation air conditioner is less than or equal to the return air temperature of the compressor, controlling the running frequency of the compressor to reduce a preset frequency threshold.
According to the compressor protection control device of the radiation air conditioner, when the radiation air conditioner operates in a refrigerating mode, the evaporation temperature of the radiation air conditioner is the temperature of an indoor heat exchanger of the radiation air conditioner; when the radiation air conditioner is in heating operation, the evaporation temperature of the radiation air conditioner is the temperature of an outdoor heat exchanger of the radiation air conditioner.
According to the compressor protection control device of the radiation air conditioner, the protection control module is further configured to judge that the radiation air conditioner is in a stable operation state when the time for which the compressor operates at the constant operation frequency reaches a preset time, or the operation parameters of the radiation air conditioner are kept unchanged and the temperature of any one test point in the radiation air conditioner is kept unchanged within the preset time, or the operation voltage of the radiation air conditioner is kept unchanged and the variation range of the operation current of the radiation air conditioner within the preset time is within a preset current fluctuation interval.
The present invention also proposes a radiation air conditioner having the compressor protection control apparatus of the radiation air conditioner of the above embodiment.
According to the radiation air conditioner provided by the embodiment of the invention, the radiation air conditioner can better radiate refrigeration or radiation heating through the compressor protection control device of the radiation air conditioner provided with the embodiment, and the liquid impact of the compressor can be prevented.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of the overall construction of a heat exchanger according to some embodiments of the invention;
FIG. 2 is an exploded schematic view of a heat exchanger according to some embodiments of the present invention;
FIG. 3 is an enlarged, fragmentary schematic view of a heat exchanger according to some embodiments of the invention;
FIG. 4 is a schematic diagram of the overall construction of a heat exchanger according to further embodiments of the present invention;
FIG. 5 is an exploded schematic view of a heat exchanger according to further embodiments of the present invention;
FIG. 6 is a graph of temperature rise test data for heat exchanger testing according to some embodiments of the invention;
FIG. 7 is a graph of temperature drop test data for a heat exchanger test according to some embodiments of the invention;
FIG. 8 is a system diagram of a radiant air conditioner according to an embodiment of the present invention;
fig. 9 is a flowchart of a compressor protection control method of a radiant air conditioner according to an embodiment of the present invention.
Reference numerals:
a heat exchanger 100;
a microchannel core 1; flat tubes 11; a header 12; an input tube 121; an output pipe 122;
a heat sink 2; a heat dissipation plate 21; heat dissipating fins 22.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The invention provides a radiation air conditioner, which comprises a shell, a heat exchanger and an air exhaust part, wherein the shell is provided with an air inlet and an air outlet, the air exhaust part is arranged in the shell, and the air exhaust part operates to drive the air in the shell to flow so as to generate negative pressure at the air inlet, so that the heat dissipation efficiency is improved.
The heat exchange device has a radiation mode, under the radiation mode, the exhaust component does not work, air in the shell exchanges heat with the heat exchanger, the air after heat exchange can be discharged through the air outlet, then the air inlet can form negative pressure, and the air outside the shell can flow into the shell through the air inlet and then exchanges heat with the heat exchanger. Therefore, under the radiation mode, because the exhaust part does not work, the noise-free operation of the heat exchange device is realized, and the air and the heat exchanger can transfer heat through natural convection, so that the air outlet of the heat exchange device is soft, the non-wind sense of the heat exchange device can be realized, and the heat exchange device is particularly suitable for small-load application scenes such as sleep and the like.
Still further, the heat exchanger 100 includes: a microchannel core 1 and two heat sinks 2.
The micro-channel core body 1 is provided with a plurality of flat tubes 11 for the flow of a heat exchange medium, and a plurality of channels for the flow of the heat exchange medium are arranged in the flat tubes 11 for the flow of the heat exchange medium; two heat dissipation members 2 are provided on opposite sides in the thickness direction of the microchannel core 1, each heat dissipation member 2 includes a heat dissipation plate 21 and heat dissipation fins 22, and the heat dissipation fins 22 are provided on a side of the heat dissipation plate 21 away from the microchannel core 1.
Because two heat dissipation parts 2 are established in the ascending relative both sides of thickness direction of microchannel core 1, microchannel core 1 is located the centre, two heat dissipation parts 2 constitute three-layer sandwich formula structure with microchannel core 1, refrigerant medium flows in microchannel core 1 and conducts heat, the heat dissipation part 2 of both sides is through radiation heat transfer and natural convection, give the air around heat or cold volume transmission, heat exchanger 100 can also not take the fan, realize no wind or zero wind, very big improvement the travelling comfort, customer's experience sense has been promoted.
According to the heat exchanger 100 provided by the embodiment of the invention, the micro-channel core body 1 and the two heat dissipation members 2 are arranged, the two heat dissipation members 2 and the micro-channel core body 1 form a three-layer sandwich structure, and the two heat dissipation members 2 are tightly attached to the two sides of the micro-channel core body 1, so that the heat exchange area of the air side is enlarged, the heat exchange efficiency is improved, and the discharge of condensed water is facilitated.
Referring to fig. 1 and 4, according to some embodiments of the present invention, a heat dissipation plate 21 is in direct contact with and attached to a microchannel core 1. Because the heat dissipation plate 21 directly contacts and is attached to the micro-channel core body 1, the heat dissipation plate 21 is in surface contact with the micro-channel core body 1, the air side heat exchange area is increased, and the heat exchange efficiency is improved.
Referring to fig. 1, 4, according to some alternative embodiments of the invention, the heat dissipation plates 21 of two heat dissipation elements 2 are connected by a connector to clamp the microchannel core 1 between the two heat dissipation elements 2. For example, the heat dissipation plates 21 of the two heat dissipation members 2 are fixed by screws to clamp the micro-channel core 1 between the two heat dissipation members 2, so that a high-efficiency heat exchange mode with zero contact thermal resistance is realized, and thus, a tube expansion process of a conventional tube-fin heat exchanger and a high-temperature welding process of a generation of micro-channel heat exchanger can be avoided.
Referring to fig. 1 and 4, according to some embodiments of the present invention, a heat dissipation plate 21 is connected to a microchannel core 1 by a heat conductive paste. Because the heat dissipation plate 21 is connected with the micro-channel core body 1 through the heat conducting glue, a high-efficiency heat exchange mode with zero contact thermal resistance is realized, and the heat exchange efficiency of the heat exchanger 100 is improved.
Referring to fig. 1-5, according to some embodiments of the present invention, heat sink 2 is an integrally formed piece. Because the heat dissipation part 2 is integrally formed, no gap is generated, and the high efficiency and the uniformity of heat dissipation are further ensured.
Referring to fig. 1-5, according to some embodiments of the present invention, each heat sink 2 includes a plurality of heat sink fins 22, and the plurality of heat sink fins 22 are arranged side by side and spaced apart. Because every radiating piece 2 includes a plurality of radiating ribs 22, a plurality of radiating ribs 22 are arranged side by side and at intervals for heat exchanger 100 heat transfer area is bigger, and the heat transfer is more even, and heat exchange efficiency is higher.
As shown in fig. 1-5, according to some alternative embodiments of the present invention, the heat dissipation ribs 22 extend parallel or perpendicular to the direction of extension of the channels. For example, the extending direction of the heat dissipation ribs 22 is perpendicular to the extending direction of the channels, and since the heat exchanger 100 is used while keeping the extending direction of the heat dissipation ribs 22 perpendicular, the heat exchanger can be used as an evaporator to facilitate the drainage of condensed water; the extending direction of the heat dissipating fins 22 is parallel to the extending direction of the channels, and since the heat exchanger 100 is used while keeping the extending direction of the heat dissipating fins 22 perpendicular, it is possible to facilitate the drainage of condensed water when it is used as an evaporator, and at the same time, the heat exchanger 100 may have various shapes, such as: l-shaped or U-shaped.
As shown in FIG. 3, according to some alternative embodiments of the present invention, the spacing d between two adjacent fins 22 ranges from 0.8 to 1.5mm, and the height h of the fins 22 ranges from 1mm to 2 mm. For example, the distance d between two adjacent fins 22 is 0.8mm, and the height h of the fins 22 is 1.2 mm. The interval d between the fins 22 and the height h of the fins 22 are different, and the radiation coefficients of the surfaces of the fins 22 are also different. As the interval d between the radiating ribs 22 becomes larger and the height h of the radiating ribs 22 becomes higher, the emissivity of the surface of the radiating ribs 22 becomes stronger.
Referring to fig. 1-5, according to some embodiments of the present invention, at least the heat dissipating fins 22 of the heat dissipating member 2 are provided with a heat absorbing layer.
Referring to fig. 1-5, according to some alternative embodiments of the present invention, the heat absorbing layer is a black graphene layer.
Because the heat absorption layer of black graphene is sprayed on the surface of the heat dissipation member 2, the absorption rate of the surface of the heat dissipation member 2 is increased, and the radiation heat exchange coefficient is enhanced.
The invention also provides a protection control method for the compressor of the radiation air conditioner.
As shown in fig. 9, according to a radiation air conditioner according to an embodiment of the present invention, the radiation air conditioner includes an indoor heat exchanger including: the heat dissipation device comprises a micro-channel core body and heat dissipation pieces, wherein the micro-channel core body is provided with a plurality of channels for heat exchange media to flow, the heat dissipation pieces are arranged on two opposite sides of the micro-channel core body in the thickness direction, and the heat dissipation pieces are suitable for dissipating heat through radiation.
The compressor protection control method of the radiation air conditioner comprises the following steps:
first, when the radiation air conditioner enters a radiation mode and is in a stable operation state, the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor are obtained, it should be noted that in the air conditioner in the related art, in the starting process, the air conditioner is in an unstable state, and the compressor protection control method of the radiation air conditioner in the application can detect the evaporation temperature of the radiation air conditioner and the temperature of the compressor when the radiation air conditioner is in a stable operation process, so as to obtain the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor.
Further, the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor is judged, and the operation frequency of the compressor is controlled according to the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor, so that liquid impact of the compressor is prevented.
It should be noted that, in the air conditioner in the related art, if the indoor fan does not operate or the air conditioner does not have the indoor fan, the compressor of the air conditioner has a risk of liquid impact during the operation of the air conditioner, so as to damage the compressor and the air conditioner.
The radiation air conditioner has the advantages that when the indoor fan does not rotate or the radiation air conditioner does not have the indoor fan in the radiation mode, the radiation air conditioner obtains the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor through obtaining the radiation air conditioner, then the relation between the parameters is judged, the running frequency of the compressor is regulated and controlled, the radiation air conditioner can be well adapted to the running state of the radiation air conditioner in the refrigeration mode or the heating mode, liquid impact on the compressor can be prevented, and the compressor and the radiation air conditioner are damaged.
Therefore, according to the method for protecting and controlling the compressor of the radiation air conditioner, the operation frequency of the compressor is regulated and controlled by acquiring the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor through the radiation air conditioner and judging the relation between the parameters, so that the method not only can be well suitable for the operation state of the radiation air conditioner in a cooling mode or a heating mode, but also can prevent the compressor from being damaged by liquid impact.
The method for judging the stable operation of the radiation air conditioner can be as follows:
the first embodiment is as follows: the compressor of the radiant air conditioner operates for a first preset time at a constant frequency;
example two: under the condition that the operation parameters of the radiation air conditioner are inconvenient, the temperature of a certain point of the radiation air conditioner is not changed within a first preset time, wherein the temperature of the certain point of the radiation air conditioner can be specifically set according to factors such as the working environment of the radiation air conditioner, the model of the radiation air conditioner and the like;
example three: on the premise that the voltage of the radiation air conditioner is stable, the variation range of the current of the radiation air conditioner is within a first preset fluctuation range within a first preset time.
Of course, it is understood that there may be other methods for determining the stable operation of the radiant air conditioner, which is not limited herein.
In some embodiments of the present invention, the temperature parameter of the compressor comprises a compressor return air temperature, wherein controlling an operating frequency of the compressor according to a relationship between an evaporating temperature of the radiant air conditioner and the temperature parameter of the compressor comprises: if the evaporation temperature of the radiation air conditioner is greater than the sum of the return air temperature of the compressor and a preset temperature threshold value, controlling the running frequency of the compressor to be kept unchanged; if the evaporation temperature of the radiation air conditioner is less than or equal to the sum of the return air temperature of the compressor and a preset temperature threshold value and is greater than the return air temperature of the compressor, controlling the compressor to prohibit frequency increase; and if the evaporation temperature of the radiation air conditioner is less than or equal to the return air temperature of the compressor, controlling the running frequency of the compressor to be reduced by a preset frequency threshold value.
In one particular example, as shown in fig. 9, the compressor return air temperature is expressed as: and T, when the preset temperature threshold is 2 ℃ and the preset frequency threshold is 5Hz, when the compressor of the radiation air conditioner operates at the operating frequency of f:
when the following conditions are satisfied: the evaporation temperature is more than Treturn +2 ℃, and the compressor works at the operating frequency of f;
otherwise, the radiation air conditioner continuously judges whether the following conditions are met: the evaporation temperature is larger than T loop, if the evaporation temperature is larger than T loop, the running frequency of the compressor is forbidden to be increased, and if the evaporation temperature is not larger than T loop, the running frequency of the compressor is reduced by 5 Hz.
In some alternative examples, the radiant air conditioner has a plurality of thermal bulbs to detect the temperature at various locations of the radiant air conditioner, as can be seen in particular with reference to fig. 8, in which:
and (4) T row: the exhaust temperature sensing bulb is arranged on a copper pipeline between the exhaust port of the compressor and the four-way valve;
bottom T: the compressor bottom temperature sensing bulb is arranged on the main cylinder body of the compressor;
t, returning: the air return temperature sensing package is arranged on a copper pipeline between an air return port of the compressor and the four-way valve;
t, inner 1: the indoor heat exchanger temperature sensing bulb is arranged on a copper pipeline between the indoor heat exchanger and the electronic expansion valve;
t, inner 2: the indoor heat exchanger temperature sensing bulb is arranged on the indoor heat exchanger;
t, inner 3: the indoor heat exchanger temperature sensing bulb is arranged on a copper pipeline between the indoor heat exchanger and the throttling component;
t outer 1: the temperature sensing bulb of the outdoor heat exchanger is arranged on a copper pipeline between the outdoor heat exchanger and the four-way valve;
t outer 2: the outdoor heat exchanger temperature sensing bulb is arranged on the outdoor heat exchanger;
t, outer 3: and the temperature sensing bulb of the outdoor heat exchanger is arranged on a copper pipeline between the outdoor heat exchanger and the throttling component.
In addition, the sensor acquiring parameters at least comprises the following steps: an indoor air temperature bulb for measuring indoor temperature and an outdoor air temperature bulb for measuring outdoor temperature.
Of course, it is understood that the temperature at other positions may also be measured according to actual requirements to obtain the sensor collecting parameters of the air conditioner, which is not limited herein.
In some embodiments of the present invention, the evaporation temperature of the radiation air conditioner is the indoor heat exchanger temperature of the radiation air conditioner when the radiation air conditioner is in the cooling operation, and the evaporation temperature of the radiation air conditioner is the outdoor heat exchanger temperature of the radiation air conditioner when the radiation air conditioner is in the heating operation.
In some embodiments of the present invention, the temperature parameter package of the compressor may also be determined by the T-loop, the T-bottom and the evaporation temperature together, and whether the compressor has a risk of liquid impact, and of course, in a specific operation, the radiation air conditioner may further obtain the temperature parameter of the compressor according to an operating environment, a model, and the like, and no specific setting is made here.
In some embodiments of the present invention, before the air conditioner enters the radiation mode, the air conditioner is further subjected to fault detection to determine whether a component fault condition occurs, wherein if the component fault condition occurs, the main control mechanism and the protection control mechanism of the air conditioner are modified according to a predefined fault strategy table. The component failure herein may refer to a failure of a thermal bulb in an air conditioner, and it is understood that the component failure may also be a failure of other structures or components, which is not limited herein.
In a specific example, the component failure is a failure of a thermal bulb in an air conditioner, and the thermal bulb of the air conditioner may include: exhaust temperature bulb T row, compressor bottom bulb T bottom, return air bulb T return, 1 in indoor heat exchanger bulb T, 2 in indoor heat exchanger bulb T, 3 in indoor heat exchanger bulb T, 1 outside outdoor heat exchanger bulb T, 2 outside outdoor heat exchanger bulb T, 3 outside outdoor heat exchanger bulb T, specifically:
and (4) T row: the exhaust temperature sensing bulb is arranged on a copper pipeline between the exhaust port of the compressor and the four-way valve;
bottom T: the compressor bottom temperature sensing bulb is arranged on the main cylinder body of the compressor;
t, returning: the air return temperature sensing package is arranged on a copper pipeline between an air return port of the compressor and the four-way valve;
t, inner 1: the indoor heat exchanger temperature sensing bulb is arranged on a copper pipeline between the indoor heat exchanger and the electronic expansion valve;
t, inner 2: the indoor heat exchanger temperature sensing bulb is arranged on the indoor heat exchanger;
t, inner 3: the indoor heat exchanger temperature sensing bulb is arranged on a copper pipeline between the indoor heat exchanger and the throttling component;
t outer 1: the temperature sensing bulb of the outdoor heat exchanger is arranged on a copper pipeline between the outdoor heat exchanger and the four-way valve;
t outer 2: the outdoor heat exchanger temperature sensing bulb is arranged on the outdoor heat exchanger;
t, outer 3: and the temperature sensing bulb of the outdoor heat exchanger is arranged on a copper pipeline between the outdoor heat exchanger and the throttling component.
Of course, it is understood that the temperature at other positions may also be measured according to actual requirements to obtain the sensor collecting parameters of the air conditioner, which is not limited herein.
Specifically, the regulation and control method may be implemented according to the fault policy table shown in table 4 below:
table 4: fault strategy table
Figure BDA0002507528460000091
Figure BDA0002507528460000101
By the implementation method of the fault strategy table, when one or more temperature sensing bulbs in the air conditioner are damaged, the air conditioner can still run reliably, and the system paralysis cannot be caused, so that the user experience is not influenced.
The present invention also provides a computer-readable storage medium that can implement the compressor protection control method of the radiation air conditioner of the above-described embodiment.
According to the computer-readable storage medium of an embodiment of the present invention, a compressor protection control program of a radiation air conditioner is stored thereon, which implements a compressor protection control method of the radiation air conditioner when being executed by a processor.
Therefore, according to the computer-readable storage medium provided by the embodiment of the invention, the frequency of the compressor can be well controlled, so that the risk of liquid impact of the compressor is prevented.
The invention also provides a radiation air conditioner which can realize the compressor protection control method of the radiation air conditioner.
According to the radiation air conditioner of the embodiment of the present invention, the radiation air conditioner includes: a heat exchanger, the heat exchanger comprising: the heat dissipation device comprises a micro-channel core body and heat dissipation pieces, wherein the micro-channel core body is provided with a plurality of channels for heat exchange media to flow, the heat dissipation pieces are arranged on two opposite sides of the micro-channel core body in the thickness direction, and the heat dissipation pieces are suitable for dissipating heat through radiation; the radiation air conditioner also comprises a memory, a processor and a compressor protection control program of the radiation air conditioner, wherein the compressor protection control program is stored on the memory and can run on the processor, and the compressor protection control method of the radiation air conditioner is realized when the processor executes the compressor protection control program.
Therefore, according to the radiation air conditioner provided by the embodiment of the invention, the radiation air conditioner and the compressor can be better operated through the protection control method of the compressor of the radiation air conditioner, so that the indoor temperature can be adjusted without wind, and the user experience is good.
The invention also provides a compressor protection control device of the radiation air conditioner.
According to the compressor protection control device of the radiation air conditioner of the embodiment of the invention, the radiation air conditioner comprises a heat exchanger, and the heat exchanger comprises: microchannel core and radiating piece, the microchannel core has a plurality of passageways that can supply heat exchange medium to flow, and the relative both sides on the thickness direction of microchannel core are established to the radiating piece, and the radiating piece is suitable for through radiation heat dissipation, and compressor protection controlling means includes: the device comprises an acquisition module, a judgment module and a protection control module, wherein the acquisition module is used for acquiring the evaporation temperature of the radiation air conditioner and the temperature parameter of a compressor when the radiation air conditioner enters a radiation mode and is in a stable operation state, the judgment module is used for judging the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor, and the protection control module is used for controlling the operation frequency of the compressor according to the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor so as to prevent the compressor from liquid impact.
Therefore, according to the compressor frequency control device of the radiation air conditioner, the radiation air conditioner can radiate and conduct temperature better through the arranged heat exchanger so as to cool or heat an indoor environment better, and the radiation air conditioner can be controlled better through the arranged acquisition module, the judgment module and the protection control module, so that the running frequency of the compressor is controlled better, and liquid impact of the compressor is prevented.
According to the compressor protection control device of the radiation air conditioner, the temperature parameter of the compressor comprises the return air temperature of the compressor, wherein the protection control module is also used for controlling the running frequency of the compressor to keep unchanged when the evaporation temperature of the radiation air conditioner is greater than the sum of the return air temperature of the compressor and a preset temperature threshold; when the evaporation temperature of the radiation air conditioner is less than or equal to the sum of the return air temperature of the compressor and a preset temperature threshold value and is greater than the return air temperature of the compressor, controlling the compressor to prohibit frequency increase; and when the evaporation temperature of the radiation air conditioner is less than or equal to the return air temperature of the compressor, controlling the running frequency of the compressor to reduce the preset frequency threshold.
According to the compressor protection control device of the radiation air conditioner, when the radiation air conditioner operates in a refrigerating mode, the evaporation temperature of the radiation air conditioner is the temperature of an indoor heat exchanger of the radiation air conditioner; when the radiation air conditioner is in heating operation, the evaporation temperature of the radiation air conditioner is the temperature of an outdoor heat exchanger of the radiation air conditioner.
According to the compressor protection control device of the radiation air conditioner, the protection control module is further used for judging that the radiation air conditioner is in a stable operation state when the time that the compressor works at the constant operation frequency reaches the preset time, or the operation parameters of the radiation air conditioner are kept unchanged and the temperature of any test point in the radiation air conditioner is kept unchanged in the preset time, or the operation voltage of the radiation air conditioner is kept unchanged and the variation amplitude of the operation current of the radiation air conditioner in the preset time is in the preset current fluctuation interval.
The present invention also proposes a radiation air conditioner having the compressor protection control apparatus of the radiation air conditioner of the above embodiment.
According to the radiation air conditioner provided by the embodiment of the invention, the radiation air conditioner can better radiate refrigeration or radiation heating through the compressor protection control device of the radiation air conditioner provided with the embodiment, and the liquid impact of the compressor can be prevented.
Other constructions and operations of the radiation air conditioner according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
It should be noted that the radiation air conditioner, the compressor protection control method, and the compressor protection control device of the present invention are all obtained based on the following studies and experiments, and specifically:
according to the empirical formula of radiation heat transfer, Stefan-Boltzmann law:
Figure BDA0002507528460000121
note: the specific meanings of the parameters in the above formula are as follows:
q-heat transfer amount
A-heat exchange area
T is the absolute temperature (K) of the object, the absolute temperatures of the two objects A and B;
sigma-Stefan-Boltzmann constant, sigma 5.67X 10-8W/(m2·K4)；
Epsilon-the surface emissivity, which has a value between 0 and 1, is determined by the surface properties of the object, and epsilon is 1 in the case of absolute blackbody.
Factors that influence the surface emissivity e are the type of substance, the surface temperature and the surface roughness. The emissivity of different substances is different, and the emissivity of the same metal material, which is rough or oxidized, is several times that of a highly polished metal material.
Table 1-table 3, fig. 6-fig. 7 are experimental data for testing of heat exchanger 100 according to the present invention:
wherein, tables 1 to 3 are tables of test data, and fig. 6 to 7 are graphs drawn according to the test data.
Table 1: temperature rise and drop test conditions
Temperature reduction Indoor at 36 ℃/60% Outdoor 43 ℃/60% Wall 34 deg.C
Temperature rise Indoor 0 ℃/100% Outdoor-5 ℃/60% Wall 4 deg.C
Table 2: temperature rise test data
Time/min Initial 20 40 60 80 100
Air temperature 5 8.78 10.46 11.38 11.52 11.67
Flat temperature of wall 4.97 6.28 6.94 7.46 7.51 7.63
Table 3: temperature drop test data
Figure BDA0002507528460000122
Figure BDA0002507528460000131
The test results and curves show that the heat exchanger 100 and the radiation control method of the air conditioner provided by the invention can realize rapid temperature rise and maintain the temperature.
For the purposes of this application, it should be noted that the embodiments of the present application may be provided as a method, system, or computer program product, as will be appreciated by one of ordinary skill in the art. 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.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
In the description herein, references to the description of the terms "some embodiments," "optionally," "further," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A compressor protection control method of a radiation air conditioner, characterized in that the radiation air conditioner includes a heat exchanger, the heat exchanger includes: the compressor protection control method comprises the following steps of:
when the radiation air conditioner enters a radiation mode and is in a stable operation state, acquiring the evaporation temperature of the radiation air conditioner and the temperature parameter of a compressor, wherein when the radiation air conditioner operates in a refrigerating mode, the evaporation temperature of the radiation air conditioner is the temperature of an indoor heat exchanger of the radiation air conditioner; when the radiation air conditioner is in heating operation, the evaporation temperature of the radiation air conditioner is the temperature of an outdoor heat exchanger of the radiation air conditioner;
judging the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor;
controlling an operation frequency of the compressor according to a relationship between an evaporation temperature of the radiant air conditioner and a temperature parameter of the compressor to prevent the compressor from liquid slugging, wherein,
the temperature parameter of the compressor comprises a compressor return air temperature, wherein the operation frequency of the compressor is controlled according to the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor, and the method comprises the following steps:
if the evaporation temperature of the radiation air conditioner is less than or equal to the sum of the return air temperature of the compressor and a preset temperature threshold and is greater than the return air temperature of the compressor, controlling the compressor to prohibit frequency increase;
and if the evaporation temperature of the radiation air conditioner is less than or equal to the return air temperature of the compressor, controlling the running frequency of the compressor to reduce a preset frequency threshold.
2. A compressor protection control method of a radiation air conditioner according to claim 1, wherein the operation frequency of the compressor is controlled according to the relationship between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor, further comprising:
and if the evaporation temperature of the radiation air conditioner is greater than the sum of the return air temperature of the compressor and a preset temperature threshold value, controlling the running frequency of the compressor to be kept unchanged.
3. The method as claimed in claim 1, wherein the radiation air conditioner is determined to be in a stable operation state when a time for which the compressor operates at a constant operation frequency reaches a preset time, or an operation parameter of the radiation air conditioner is maintained constant and a temperature of any one test point of the radiation air conditioner is maintained constant for a preset time, or an operation voltage of the radiation air conditioner is maintained constant and a variation range of an operation current of the radiation air conditioner within a preset time is within a preset current fluctuation range.
4. A computer-readable storage medium, characterized in that a compressor protection control program of a radiation air conditioner is stored thereon, which when executed by a processor implements the compressor protection control method of the radiation air conditioner according to any one of claims 1 to 3.
5. A radiant air conditioner, characterized in that it comprises:
a heat exchanger, the heat exchanger comprising: the heat dissipation device comprises a micro-channel core body and heat dissipation members, wherein the micro-channel core body is provided with a plurality of channels for heat exchange media to flow, the heat dissipation members are arranged on two opposite sides of the micro-channel core body in the thickness direction so as to form a three-layer sandwich structure with the micro-channel core body, and the heat dissipation members are suitable for dissipating heat through radiation;
a memory, a processor and a compressor protection control program of a radiation air conditioner stored on the memory and operable on the processor, the processor implementing the compressor protection control method of the radiation air conditioner according to any one of claims 1 to 3 when executing the compressor protection control program.
6. A compressor protection control device of a radiation air conditioner, characterized in that the radiation air conditioner includes a heat exchanger, the heat exchanger includes: the compressor protection control device comprises a micro-channel core body and radiating pieces, wherein the micro-channel core body is provided with a plurality of channels for heat exchange media to flow, the radiating pieces are arranged on two opposite sides of the micro-channel core body in the thickness direction, the radiating pieces are suitable for radiating through radiation, and the compressor protection control device comprises:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the evaporation temperature of the radiation air conditioner and the temperature parameter of a compressor when the radiation air conditioner enters a radiation mode and is in a stable operation state, and the evaporation temperature of the radiation air conditioner is the temperature of an indoor heat exchanger of the radiation air conditioner when the radiation air conditioner operates in a refrigerating mode; when the radiation air conditioner is in heating operation, the evaporation temperature of the radiation air conditioner is the temperature of an outdoor heat exchanger of the radiation air conditioner;
the judging module is used for judging the relation between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor;
a protection control module for controlling the operation frequency of the compressor according to the relationship between the evaporation temperature of the radiation air conditioner and the temperature parameter of the compressor to prevent the compressor from liquid impact,
the temperature parameter of the compressor comprises a compressor return air temperature, wherein the protection control module is further used for,
when the evaporation temperature of the radiation air conditioner is less than or equal to the sum of the return air temperature of the compressor and a preset temperature threshold and is greater than the return air temperature of the compressor, controlling the compressor to prohibit frequency increase;
and when the evaporation temperature of the radiation air conditioner is less than or equal to the return air temperature of the compressor, controlling the running frequency of the compressor to reduce a preset frequency threshold.
7. A compressor protection control device of a radiation air conditioner according to claim 6, characterized in that the protection control module is also used for controlling the running frequency of the compressor to be kept unchanged when the evaporation temperature of the radiation air conditioner is more than the sum of the return air temperature of the compressor and a preset temperature threshold value.
8. The compressor protection control device of a radiation air conditioner according to claim 6, wherein the protection control module is further configured to determine that the radiation air conditioner is in a stable operation state when a time for which the compressor operates at a constant operation frequency reaches a preset time, or an operation parameter of the radiation air conditioner remains unchanged and a temperature of any one test point in the radiation air conditioner remains unchanged for a preset time, or an operation voltage of the radiation air conditioner remains unchanged and a variation range of an operation current of the radiation air conditioner within a preset time is within a preset current fluctuation range.
9. A radiation air conditioner characterized by comprising a compressor protection control device of the radiation air conditioner as set forth in any one of claims 6 to 8.
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