CN111121229B - Control method and control device of air conditioner, heat dissipation structure and air conditioner - Google Patents

Control method and control device of air conditioner, heat dissipation structure and air conditioner Download PDF

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Publication number
CN111121229B
CN111121229B CN201911312565.2A CN201911312565A CN111121229B CN 111121229 B CN111121229 B CN 111121229B CN 201911312565 A CN201911312565 A CN 201911312565A CN 111121229 B CN111121229 B CN 111121229B
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Prior art keywords
heat
air conditioner
heat dissipation
defrosting
storage structure
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CN111121229A (en
Inventor
叶何立
黄春
刘合心
李兆东
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Ningbo Aux Electric Co Ltd
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Ningbo Aux Electric 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
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Abstract

The invention provides a control method and a control device of an air conditioner, a heat dissipation structure and the air conditioner, wherein a heat storage structure and an outdoor heat exchanger of the air conditioner form a heat dissipation/defrosting loop through a heat dissipation/defrosting pipeline, and the heat storage structure provides heat from a heat dissipation main body of the air conditioner; according to the temperature T of the heat storage structureHeat storage structureAnd a first predetermined temperature T1And (3) controlling whether the air conditioner enters into a defrosting heat dissipation mode or not. The invention realizes organic combination of heat dissipation of the heat dissipation main body and defrosting of the outdoor heat exchanger; the control method can avoid frosting of the outdoor heat exchanger, or can realize defrosting of the outdoor heat exchanger or assist defrosting of the outdoor heat exchanger after the outdoor heat exchanger frosts.

Description

Control method and control device of air conditioner, heat dissipation structure and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and a control device of an air conditioner, a heat dissipation structure and the air conditioner.
Background
At present, with the development of air conditioners and the provision of performance requirements of users on the air conditioners, the phenomena of serious heating and higher heat quantity of components in the air conditioners can occur due to the increase of loads, and particularly the heating phenomenon of a frequency conversion module in the frequency conversion air conditioners is serious; this phenomenon is very likely to cause damage to components.
In addition, when the air conditioner operates in the heating mode, the outdoor unit of the air conditioner is also frosted, and the phenomenon affects the heat exchange efficiency of the air conditioner and reduces the working performance of the air conditioner.
Disclosure of Invention
In order to solve the problem of heating of components in the air conditioner, the invention provides a control method of the air conditioner, which comprises the following steps:
the heat storage structure and an outdoor heat exchanger of the air conditioner form a heat dissipation/defrosting loop through a heat dissipation/defrosting pipeline, and the heat storage structure provides heat from a heat dissipation main body of the air conditioner;
according to the temperature T of the heat storage structureHeat storage structureAnd a first predetermined temperature T1And (3) controlling whether the air conditioner enters a heat dissipation/defrosting mode.
By adopting the technical scheme, the heat dissipation of the heat dissipation main body is organically combined with the defrosting of the outdoor heat exchanger; combining a heat storage structure with an outdoor heat exchanger, and communicating the heat storage structure with the outdoor heat exchanger through a heat dissipation/defrosting pipeline to form a heat dissipation/defrosting loop, wherein the heat storage structure provides heat by a heat dissipation main body; specifically, after the heat dissipation main body provides heat for the heat storage structure, through the heat dissipation/defrosting loop, when the air conditioner enters a heat dissipation/defrosting mode, heat dissipation and defrosting are carried out simultaneously, namely, heat stored by the heat storage structure is transferred to the outdoor heat exchanger through the heat dissipation/defrosting loop, heat can be provided for the outdoor heat exchanger while heat dissipation of the heat dissipation main body is achieved, and through the control method, frosting of the outdoor heat exchanger can be avoided, or defrosting of the outdoor heat exchanger can be achieved after frosting of the outdoor heat exchanger, or defrosting of the outdoor heat exchanger is assisted.
Optionally, the control method includes the following steps:
when the temperature T of the heat storage structureHeat storage structureAnd a first predetermined temperature T1Satisfies the following relationship: t isHeat storage structure>T1And when the air conditioner is in the heat dissipation/defrosting mode, controlling the air conditioner to enter the heat dissipation/defrosting mode.
In this manner, when T isHeat storage structure>T1When the heat storage structure stores a certain amount of heat, the heat in the heat storage structure needs to be transferred to the outdoor heat exchanger so as toThe heat of the subsequent heat dissipation main body is convenient to continue to be stored in the heat storage structure, namely the heat dissipation main body is convenient to dissipate heat, and the damage of the heat dissipation main body caused by excessive heat of the heat dissipation main body is avoided.
Optionally, the control method includes the following steps:
when the temperature T of the heat storage structureHeat storage structureAnd a second predetermined temperature T2Satisfies the following relationship: t isHeat storage structure<T2(ii) a And the inlet temperature T of the fluid in the heat dissipation/defrosting pipelineInlet of heat radiation/defrosting pipeline-heat exchangerAnd the outlet temperature T of said fluidHeat dissipation/defrosting pipeline-heat storage structure outletThe relationship between them satisfies: t isInlet of heat radiation/defrosting pipeline-heat exchanger<THeat dissipation/defrosting pipeline-heat exchanger outletWhen the air conditioner is in the heat dissipation mode, controlling the air conditioner to exit the heat dissipation mode;
wherein the inlet temperature TInlet of heat radiation/defrosting pipeline-heat exchangerThe temperature of the fluid in the heat dissipation/defrosting pipeline at the inlet of the heat dissipation/defrosting pipeline when the fluid enters the outdoor heat exchanger;
the outlet temperature THeat dissipation/defrosting pipeline-heat exchanger outletThe temperature of the fluid in the heat dissipation/defrosting pipeline at the outlet of the heat dissipation/defrosting pipeline when the fluid flows out of the outdoor heat exchanger is obtained.
In this way, due to THeat storage structure<T2And T isInlet of heat radiation/defrosting pipeline-heat exchanger<THeat dissipation/defrosting pipeline-heat exchanger outlet+ a, therefore, the heat in the heat dissipating body and/or the heat storage structure is relatively small, and no damage is caused to the heat dissipating body, so that the air conditioner is controlled to exit the heat dissipating/defrosting mode when the above conditions are satisfied.
Optionally, the control method includes the following steps:
and when the air conditioner does not meet the condition of entering the heat dissipation mode, controlling the air conditioner to enter a heat storage mode. This kind of mode, when the air conditioner does not satisfy the condition of getting into the heat dissipation mode, the problem that the damage appears because the heat is too much does not exist to the main part of dispelling the heat this moment, consequently can control the air conditioner and get into the heat accumulation mode, through heat accumulation structure storage heat.
Optionally, the control method includes the following steps:
after the air conditioner enters the heat storage mode, when the temperature T of the heat storage structureHeat storage structureAnd the first preset temperature T1Satisfies the following relationship: t isHeat storage structure>T1And when the air conditioner is in the heat storage mode, the air conditioner is controlled to exit the heat storage mode, and meanwhile the air conditioner is controlled to enter the heat dissipation/defrosting mode.
In this way, after the air conditioner enters the heat storage mode, the temperature T of the heat storage structure is controlled againHeat storage structureAnd a first predetermined temperature T1The judgment of the relation controls the air conditioner to exit the heat storage mode, and simultaneously controls the air conditioner to enter the heat dissipation/defrosting mode, so that the conversion between the heat storage mode and the heat dissipation/defrosting mode can be effectively realized, and the heat storage mode can be timely exited.
The invention provides a control device of an air conditioner, which executes any one of the control methods; the control device includes:
a first control unit: the first control unit is used for controlling the temperature T of the heat storage structureHeat storage structureAnd the first preset temperature T1Controlling whether the air conditioner enters the heat dissipation/defrosting mode.
The invention provides a heat dissipation structure, which is matched with a heat dissipation main body and comprises a heat conduction structure and a heat storage structure, wherein the heat conduction structure comprises a first heat conduction structure and a second heat conduction structure which are correspondingly arranged; after the first heat conduction structure is matched with the second heat conduction structure, the heat of the heat dissipation main body is transferred to the heat storage structure, so that the heat dissipation of the heat dissipation main body is realized.
The heat dissipation structure is matched with the heat dissipation main body, the heat dissipation main body is combined with the heat storage structure in the heat dissipation structure through the first heat conduction structure and the second heat conduction structure in the heat conduction structure, and after the first heat conduction structure is matched with the second heat conduction structure, heat of the heat dissipation main body is transferred to the heat storage structure to achieve heat dissipation of the heat dissipation main body.
The heat radiating body in the present invention is a component that generates heat or a structure including a heat generating element, and in the present embodiment, an electronic control box is preferable. When the main part that dispels the heat is automatically controlled box, the bottom of automatically controlled box is located to first heat conduction structure preferred, and the heat that automatically controlled box produced in the operation process is transmitted through the cooperation of first heat conduction structure and second heat conduction structure and is stored in the heat accumulation structure, can realize effectual heat dissipation to automatically controlled box, avoids the components and parts in the automatically controlled box because the heat is too much, causes the damage.
Optionally, the heat storage structure and an outdoor heat exchanger of the air conditioner form a heat dissipation/defrosting loop.
The structure forms a heat dissipation/defrosting loop with the outdoor heat exchanger of the air conditioner through the heat storage structure, when heat in the heat storage structure is stored to a certain amount, or the outdoor heat exchanger has a defrosting requirement, the heat in the heat storage structure can be transferred to the outdoor heat exchanger through the heat dissipation/defrosting loop, and the purpose of dissipating heat of the heat dissipation main body and/or the heat storage structure and/or the purpose of defrosting the outdoor heat exchanger are achieved.
Optionally, the heat storage structure and the outdoor heat exchanger form a heat dissipation/defrosting loop through a heat dissipation/defrosting pipeline; the number of the second heat conduction structures is more than two, and the heat dissipation/defrosting pipelines are arranged around the second heat conduction structures.
In the structure, the heat storage structure and the outdoor heat exchanger form a heat dissipation/defrosting loop through a heat dissipation/defrosting pipeline, wherein the heat dissipation/defrosting pipeline can be a copper pipe, and heat transfer between the heat storage structure and the outdoor heat exchanger is realized by flowing heat-conducting media such as heat-conducting oil in the copper pipe; at this time, the number of the second heat conduction structures is set to be more than two, the heat dissipation/defrosting pipelines are arranged around the second heat conduction structures, and heat transferred from the heat dissipation main body to the heat storage structure can be transferred to the outdoor heat exchanger through the heat dissipation/defrosting pipelines.
Optionally, the relationship between the thickness d1 of the thermal storage structure and the height h1 of the heat dissipation/defrosting pipe to the bottom of the thermal storage structure is as follows: 1/3d1 is not less than h1 is not less than 2/3d 1.
The heat exchange efficiency of the heat storage structure and the outdoor heat exchanger is optimal.
Optionally, the first heat conducting structure is a heat conducting rod or a slot, and the second heat conducting structure is a slot or a heat conducting rod.
The structure, the invention provides a specific implementation mode of a first heat conduction structure and a second heat conduction structure, wherein the specific first heat conduction structure is a heat conduction rod or a slot, and the specific second heat conduction structure is a slot or a heat conduction rod, namely when the first heat conduction structure is the heat conduction rod, the second heat conduction structure is the slot; when the first heat conduction structure is a slot, the second heat conduction structure is a heat conduction rod; the second heat conduction structure is a slot when the first heat conduction structure is a heat conduction rod, and the structure can avoid the heat dissipation main body from being thicker.
The invention also provides an air conditioner, which executes the control method; or a heat dissipation structure as described in any of the above.
Drawings
Fig. 1 is a flowchart of a control method of an air conditioner according to embodiment 1 of the present invention;
fig. 2 is an exploded schematic view of a heat dissipation structure in embodiment 4 of the present invention;
fig. 3 is an assembly structure diagram of a heat dissipation structure in embodiment 4 of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view A-A of FIG. 3 (without the first thermally conductive structure);
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 3;
fig. 7 is a schematic structural diagram of a heat dissipation structure and an outdoor heat exchanger in embodiment 5 of the present invention.
Description of reference numerals:
100-a heat dissipation structure; 110-a thermally conductive structure; 111-a first thermally conductive structure; 112-a second thermally conductive structure; 120-a thermal storage structure; 121-a heat storage layer; 122-an insulating layer; 123-a housing; 130-heat dissipation/defrosting pipeline; 140-a circulation pump; 200-a heat dissipation body; 300-outdoor heat exchanger; 400-electronic expansion valve; 500-indoor heat exchanger; 600-compressor.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Example 1
The present invention provides an embodiment of a method for controlling an air conditioner, it should be noted that the steps shown in the flowchart of the drawings may be executed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that shown.
As shown in fig. 1, the present invention provides a control method of an air conditioner, which specifically comprises the following steps:
the heat storage structure and an outdoor heat exchanger of the air conditioner form a heat dissipation/defrosting loop through a heat dissipation/defrosting pipeline, and the heat storage structure provides heat from a heat dissipation main body of the air conditioner;
s1, after the air conditioner is operated, the heat dissipation main body generates heat, and the temperature T of the heat storage structure is respectively detectedHeat storage structureTemperature T of outdoor heat exchangerOutdoor heat exchangerInlet temperature TInlet of heat radiation/defrosting pipeline-heat exchangerOutlet temperature THeat dissipation/defrosting pipeline-heat storage structure outlet；
According to the temperature T of the heat storage structureHeat storage structureAnd a first predetermined temperature T1Controlling whether the air conditioner enters a heat dissipation mode or not;
the invention realizes organic combination of heat dissipation of the heat dissipation main body and defrosting of the outdoor heat exchanger; combining a heat storage structure with an outdoor heat exchanger, and communicating the heat storage structure with the outdoor heat exchanger through a heat dissipation/defrosting pipeline to form a heat dissipation/defrosting loop, wherein the heat storage structure provides heat by a heat dissipation main body; specifically, after the heat dissipation main body provides heat for the heat storage structure, through the heat dissipation/defrosting loop, when the air conditioner enters a heat dissipation/defrosting mode, heat dissipation and defrosting are carried out simultaneously, namely, heat stored by the heat storage structure is transferred to the outdoor heat exchanger through the heat dissipation/defrosting loop, heat can be provided for the outdoor heat exchanger while heat dissipation of the heat dissipation main body is achieved, and through the control method, frosting of the outdoor heat exchanger can be avoided, or defrosting of the outdoor heat exchanger can be achieved after frosting of the outdoor heat exchanger, or defrosting of the outdoor heat exchanger is assisted.
In the present invention, the heat radiating body is a component that generates heat or a structure including a heat generating element, and in the present embodiment, an electronic control box is preferable.
Temperature T of heat storage structureHeat storage structureTemperature T of outdoor heat exchangerOutdoor heat exchangerInlet temperature TInlet of heat radiation/defrosting pipeline-heat exchangerOutlet temperature THeat dissipation/defrosting pipeline-heat exchanger outletThe detection of (2) can be realized by arranging a temperature sensor at a corresponding position.
In the invention, a circulating pump can be arranged on the heat dissipation/defrosting loop, and the heat dissipation/defrosting loop is controlled by controlling the circulating pump; when the air conditioner enters a heat dissipation/defrosting mode, the heat dissipation/defrosting loop is controlled to be started, namely the circulating pump is controlled to be started, at the moment, heat in the heat storage structure is transferred to the outdoor heat exchanger through the heat dissipation/defrosting pipeline, the purpose of dissipating heat of the heat dissipation main body and/or the heat storage structure is achieved, heat is provided for the outdoor heat exchanger, defrosting of the outdoor heat exchanger is achieved or assisted, and heat exchange efficiency of the outdoor heat exchanger is improved.
In the present embodiment, the control method includes the steps of:
s2, temperature T of heat storage structureHeat storage structureAnd a first predetermined temperature T1The relationship (c) may specifically be: determining the temperature T of a thermal storage structureHeat storage structureAnd a first predetermined temperature T1Whether or not the relationship of (1) satisfies: t isHeat storage structure>T1；
S3, when the temperature T of the heat storage structureHeat storage structureAnd a first predetermined temperature T1Satisfies the following relationship: t isHeat storage structure>T1When the air conditioner is in the heat dissipation/defrosting mode, the air conditioner is controlled to enter the heat dissipation/defrosting mode; otherwise, the process proceeds to step S6.
In this manner, when T isHeat storage structure>T1When the heat storage structure stores a certain amount of heat, the heat in the heat storage structure needs to be transferred to the outdoor heat exchanger, so that the heat of the subsequent heat dissipation main body is stored in the heat storage structure continuously, namely the heat dissipation main body is convenient to dissipate heat, and the damage to the heat dissipation main body caused by excessive heat of the heat dissipation main body is avoided.
Wherein, T1The value range is as follows: 58 deg.C<T1<62 ℃ and preferably 60 ℃. In the temperature range, the heat dissipation main body is subjected to heat dissipation, the effect is optimal, and the heat dissipation main body can be effectively ensured to be at a safe working temperature; if the temperature is too high, the heat dissipation main body has a risk of damage, and if the temperature is too low, the problem that the heat dissipation/defrosting mode is frequently entered occurs.
In the present embodiment, the control method includes the steps of:
s4, judging the temperature T of the heat storage structureHeat storage structureAnd a second predetermined temperature T2Whether or not the relationship of (1) satisfies: t isHeat storage structure<T2(ii) a Simultaneously judging the inlet temperature T of the fluid in the heat dissipation/defrosting pipelineInlet of heat radiation/defrosting pipeline-heat exchangerOutlet temperature T of fluidHeat dissipation/defrosting pipeline-heat storage structure outletWhether or not the relationship between: t isInlet of heat radiation/defrosting pipeline-heat exchanger<THeat dissipation/defrosting pipeline-heat exchanger outlet+a；
S5, when the temperature T of the heat storage structureHeat storage structureAnd a second predetermined temperature T2Satisfies the following relationship: t isHeat storage structure<T2(ii) a And the inlet temperature T of the fluid in the heat dissipation/defrosting pipelineInlet of heat radiation/defrosting pipeline-heat exchangerOutlet temperature T of fluidHeat dissipation/defrosting pipeline-heat exchanger outletThe relationship between them satisfies: t isInlet of heat radiation/defrosting pipeline-heat exchanger<THeat dissipation/defrosting pipeline-heat exchanger outletWhen the current time reaches a, the air conditioner is controlled to exit the heat dissipation mode, and the air conditioner normally operates; otherwise, returning to the step S3;
wherein the inlet temperature TInlet of heat radiation/defrosting pipeline-heat exchangerThe temperature of the fluid in the heat dissipation/defrosting pipeline at the inlet of the heat dissipation/defrosting pipeline when the fluid enters the outdoor heat exchanger;
outlet temperature THeat dissipation/defrosting pipeline-heat exchanger outletThe temperature of the fluid in the heat dissipation/defrosting pipeline at the outlet of the heat dissipation/defrosting pipeline when the fluid flows out of the outdoor heat exchanger.
Wherein, T2The value range is as follows: 38 deg.C<T2<42 ℃ and preferably 40 ℃.
The value range of a is as follows: 4 deg.C<a<6 ℃ and preferably 5 ℃. T is2And the value range of a can ensure the high efficiency of the heat dissipation/defrosting process; when inlet temperature TInlet of heat radiation/defrosting pipeline-heat exchangerAnd the outlet temperature THeat dissipation/defrosting pipeline-heat exchanger outletWhen the temperature difference is lower, namely the value of a is smaller, the heat transfer is also poorer in heat exchange effect, if the heat exchange device continuously operates, the electric energy is wasted, and the temperature of the outdoor heat exchanger is higher than the temperature T of the heat storage structure at the momentHeat storage structureIf the operation is continued, the heat storage structure absorbs the chamberThe heat of the outer heat exchanger, and the heat loss of the outdoor heat exchanger may cause the reduction of the heat exchange efficiency.
The air conditioner is controlled to exit the heat dissipation mode, namely the circulating pump is turned off, at the moment, heat in the heat storage structure is not transferred to the outdoor heat exchanger through the heat dissipation/defrosting pipeline any more, the heat dissipation main body and the heat storage structure stop dissipating heat, and meanwhile, the heat storage structure does not provide heat for the outdoor heat exchanger any more and is used for achieving or assisting defrosting of the outdoor heat exchanger; returning to step S2, the next cycle is entered.
At this time, due to THeat storage structure<T2And T isInlet of heat radiation/defrosting pipeline-heat exchanger<THeat dissipation/defrosting pipeline-heat exchanger outlet+ a, therefore the heat in the heat dissipation body and/or the heat storage structure is relatively less, and will not cause damage to the heat dissipation body, therefore when the above conditions are satisfied, the air conditioner is controlled to exit the heat dissipation/defrosting mode, and the air conditioner operates normally.
In some embodiments, the control method comprises the steps of:
and S6, controlling the air conditioner to enter a heat storage mode when the air conditioner does not meet the condition of entering the heat dissipation/defrosting mode.
In this way, when the air conditioner does not satisfy the condition for entering the heat dissipation/defrosting mode, that is, when the temperature T of the heat storage structure is highHeat storage structureAnd a first predetermined temperature T1Does not satisfy the relationship of: t isHeat storage structure>T1When the air conditioner is in a heat storage mode, the heat storage structure is arranged on the heat dissipation main body, and the heat storage structure is arranged on the heat dissipation main body.
When the air conditioner enters a heat storage mode, the circulating pump is closed, and heat in the heat storage structure is stored in the heat storage structure and is not transferred to the outdoor heat exchanger through the heat dissipation/defrosting pipeline;
s7, after the air conditioner enters the heat storage mode, the temperature T of the heat storage structure can be detected in real timeHeat storage structureAnd a first predetermined temperature T1Or after a certain time interval, the temperature T of the heat storage structure is detectedHeat storage structureAnd a first predetermined temperature T1And determining the accumulationTemperature T of thermal structureHeat storage structureAnd a first predetermined temperature T1Whether or not the relationship of (1) satisfies: t isHeat storage structure>T1；
When the temperature T of the heat storage structureHeat storage structureAnd a first predetermined temperature T1Satisfies the following relationship: t isHeat storage structure>T1When the air conditioner is in the heat storage mode, the air conditioner is controlled to exit the heat storage mode, and the air conditioner is controlled to enter the heat dissipation/defrosting mode, namely step S3; otherwise, the process returns to step S6.
In this way, after the air conditioner enters the heat storage mode, the temperature T of the heat storage structure is controlled againHeat storage structureAnd a first predetermined temperature T1The judgment of the relation controls the air conditioner to exit the heat storage mode, and simultaneously controls the air conditioner to enter the heat dissipation/defrosting mode, so that the conversion between the heat storage mode and the heat dissipation/defrosting mode can be effectively realized, and the heat storage mode can be timely exited.
Example 2
The present invention provides a control device for an air conditioner, which executes any one of the above control methods, the control device including:
a first control unit: the first control unit is used for controlling the temperature T according to the heat storage structureHeat storage structureAnd a first predetermined temperature T1And (3) controlling whether the air conditioner enters a heat dissipation/defrosting mode or not.
Example 3
The invention provides an air conditioner, which executes any one of the control methods.
Other structures of the air conditioner are all the existing ones, and are not described herein again.
Example 4
As shown in one of fig. 2 to 6, the present invention provides a heat dissipation structure 100, the heat dissipation structure 100 is matched with a heat dissipation main body 200, the heat dissipation structure 100 includes a heat conduction structure 110 and a heat storage structure 120, the heat conduction structure 110 includes a first heat conduction structure 111 and a second heat conduction structure 112 correspondingly disposed, the first heat conduction structure 111 is disposed on the heat dissipation main body 200, and the second heat conduction structure 112 is disposed on the heat storage structure 120; after the first heat conducting structure 111 and the second heat conducting structure 112 are matched, the heat of the heat dissipating main body 200 is transferred to the heat storage structure 120, so as to dissipate the heat of the heat dissipating main body 200.
The heat dissipation structure 100 of the present invention is matched with the heat dissipation main body 200, the heat dissipation main body 200 is combined with the heat storage structure 120 of the heat dissipation structure 100 through the first heat conduction structure 111 and the second heat conduction structure 112 of the heat conduction structure 110, and after the first heat conduction structure 111 is matched with the second heat conduction structure 112, the heat of the heat dissipation main body 200 is transferred to the heat storage structure 120, so as to achieve the heat dissipation of the heat dissipation main body 200.
The heat dissipating body 200 in the present invention is a component that generates heat or a structure including a heat generating element, and is preferably an electronic control box in the present embodiment. When the heat dissipation main body 200 is an electric control box, the first heat conduction structure 111 is preferably arranged at the bottom of the electric control box, heat generated by the electric control box in the operation process is transferred to the heat storage structure 120 for storage through the cooperation of the first heat conduction structure 111 and the second heat conduction structure 112, effective heat dissipation can be achieved for the electric control box, and damage to components in the electric control box due to excessive heat is avoided.
The value range of the thickness d1 of the thermal storage structure 120 may be: 110mm < d1<130mm, preferably 120 mm.
However, when the heat dissipation main body 200 is an electronic control box, the first heat conduction structure 111 is preferably disposed at the bottom of the electronic control box, and at this time, the bottom of the electronic control box is set to have a thickness d2, where the value range of the thickness d2 may be 8mm < d2<12mm, and is preferably 10 mm.
In the present embodiment, the heat storage structure 120 and the outdoor heat exchanger 300 of the air conditioner constitute a heat radiation/defrosting circuit.
In this structure, the heat storage structure 120 and the outdoor heat exchanger 300 of the air conditioner form a heat dissipation/defrosting loop, and when the heat in the heat storage structure 120 is stored to a certain amount or the outdoor heat exchanger 300 has a defrosting requirement, the heat in the heat storage structure 120 can be transferred to the outdoor heat exchanger 300 through the heat dissipation/defrosting loop, so as to achieve the purpose of dissipating heat from the heat dissipation main body 200 and/or the heat storage structure 120 and/or defrosting the outdoor heat exchanger 300.
In the present embodiment, the heat storage structure 120 and the outdoor heat exchanger 300 form a heat dissipation/defrosting loop through the heat dissipation/defrosting pipeline 130; the number of the second heat conduction structures 112 is more than two, and the heat dissipation/defrosting pipeline 130 is arranged around the second heat conduction structures 112.
In this structure, the heat storage structure 120 and the outdoor heat exchanger 300 form a heat dissipation/defrosting loop through the heat dissipation/defrosting pipeline 130, wherein the heat dissipation/defrosting pipeline 130 may be a copper pipe, and heat transfer between the heat storage structure 120 and the outdoor heat exchanger 300 is realized by flowing a heat-conducting medium such as heat-conducting oil in the copper pipe; at this time, the number of the second heat conductive structures 112 is set to be two or more, and the heat dissipation/defrosting pipe 130 is arranged around the second heat conductive structure 112, so that the heat transferred from the heat dissipation body 200 to the heat storage structure 120 can be transferred to the outdoor heat exchanger 300 through the heat dissipation/defrosting pipe 130.
In the invention, the circulating pump 140 can be arranged on the heat dissipation/defrosting loop, and the control of the heat dissipation/defrosting loop is realized by controlling the circulating pump 140;
the number of the second heat conducting structures 112 has a value range of: 16-36, preferably 25, the number of the corresponding first heat conducting structures 111 also ranges from: 16-36, preferably 25;
in the present embodiment, the relationship between the thickness d1 of the thermal storage structure 120 and the height h1 of the heat radiation/frost removal pipe 130 to the bottom of the thermal storage structure 120 is: 1/3d1 is not less than h1 not more than 2/3d1, preferably 1/2d1 is not less than h 1.
With this structure, the heat exchange efficiency with the outdoor heat exchanger 300 through the heat storage structure 120 is optimized.
In this embodiment, the first heat conducting structure 111 is a heat conducting rod or a slot, and the second heat conducting structure 112 is a slot or a heat conducting rod.
In this structure, the present invention provides a specific implementation manner of the first heat conducting structure 111 and the second heat conducting structure 112, specifically, the first heat conducting structure 111 is a heat conducting rod or a slot, and the second heat conducting structure 112 is a slot or a heat conducting rod, that is, when the first heat conducting structure 111 is a heat conducting rod, the second heat conducting structure 112 is a slot; when the first heat conducting structure 111 is a slot, the second heat conducting structure 112 is a heat conducting rod; preferably, when the first heat conducting structure 111 is a heat conducting rod, and the second heat conducting structure 112 is a slot, this structure can prevent the structure of the heat dissipating body 200 from being set thick.
When the first heat conducting structure 111 is a heat conducting rod and the second heat conducting structure 112 is a slot, the shape of the slot corresponds to the shape of the heat conducting rod, preferably, the slot is cylindrical, and the diameter d of the slot is larger than the diameter of the heat conducting rodDiameter ofThe value range is as follows: 7mm<dDiameter of<9mm, preferably 8mm, the depth h2 has the following value range: 90mm<h2<110mm, preferably 100 mm; the thickness d3 of the slot has the following value range: 2mm<d3<4mm, preferably 3 mm;
in some embodiments, in order to connect the heat dissipation main body 200 and the heat dissipation structure 100 more firmly, a ribbon or the like may be used to fix the heat dissipation main body 200 and the heat dissipation structure 100, so as to avoid shaking and dropping to affect heat exchange.
The specific structure and molding material of the heat dissipation structure 100 will be described in detail below:
the first heat conducting structure 111 and the second heat conducting structure 112 are formed by a heat conducting material, wherein the heat conducting material may be copper;
the heat storage structure 120 may further include a heat storage layer 121, an insulating layer 122 and a housing 123, in addition to the second heat conducting structure 112, wherein the insulating layer 122 is disposed outside the heat storage layer 121, the heat storage layer 121 is preferably formed by a heat storage material, and the heat storage material may be a paraffin/graphite composite phase change heat storage material. The insulating layer 122 is preferably formed by an insulating material, the insulating material can be a polyurethane material, and the thickness d4 value range of the insulating material is as follows: 18mm < d4<22mm, preferably 20 mm; in addition, the outer shell 123 is disposed outside the heat storage layer 121 and the heat insulation layer 122, and is disposed at a portion except the second heat conducting structure 112, the outer shell 123 may be formed of a polyethylene material, and the thickness d5 of the outer shell 123 has a value range of: 2mm < d5<4mm, preferably 3 mm.
In addition, the portion of the heat dissipating body 200 connected to the first heat conducting structure 111 is also formed of a heat conducting material.
In the present invention, the temperature T of the heat storage structure 120Heat storage structure 120It is preferable to collect the temperature of the position where the heat dissipation body 200 is connected to the first heat conductive structure 111, whereTemperature, closest to the actual temperature of the heat dissipation body 200;
an outdoor heat exchanger 300, a compressor 600, an indoor heat exchanger 500 and an electronic expansion valve 400 in the original structure of the air conditioner are sequentially connected to form a refrigerant loop, so that heating or refrigeration is realized; when the air conditioner is in a heating mode, the heat dissipation/defrosting loop is arranged at the downstream of the refrigerant loop in the outdoor heat exchanger 300, namely, at a position closer to the refrigerant loop flowing out of the outdoor heat exchanger 300, and the heat dissipation oil return of the air conditioner is arranged in parallel in a crossed manner with the original refrigerant loop of the air conditioner.
Example 5
The present invention provides an air conditioner, as shown in fig. 7, including the heat dissipation structure 100 in the above embodiment 4.
The air conditioner also comprises an outdoor heat exchanger 300, a compressor 600, an indoor heat exchanger 500 and an electronic expansion valve 400, wherein the outdoor heat exchanger 300, the compressor 600, the indoor heat exchanger 500 and the electronic expansion valve 400 are sequentially connected to form a refrigerant loop so as to realize heating or refrigeration; when the air conditioner is in a heating mode, the heat dissipation/defrosting loop is arranged at the downstream of the refrigerant loop in the outdoor heat exchanger 300, namely, at a position closer to the refrigerant loop flowing out of the outdoor heat exchanger 300, and the heat dissipation oil return of the air conditioner is arranged in parallel with the refrigerant loop of the air conditioner in a crossed manner.
Other structures of the air conditioner are all the existing ones, and are not described herein again.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. A control method of an air conditioner is characterized in that: the control method comprises the following steps:
the heat storage structure and an outdoor heat exchanger of the air conditioner form a heat dissipation/defrosting loop through a heat dissipation/defrosting pipeline, and the heat storage structure provides heat from a heat dissipation main body of the air conditioner;
according to the temperature T of the heat storage structureHeat storage structureAnd firstPreset temperature T1Controlling whether the air conditioner enters a heat dissipation/defrosting mode;
when the temperature T of the heat storage structureHeat storage structureAnd a first predetermined temperature T1Satisfies the following relationship: t isHeat storage structure>T1And when the air conditioner is in the heat dissipation/defrosting mode, controlling the air conditioner to enter the heat dissipation/defrosting mode.
2. The control method according to claim 1, characterized in that: the control method comprises the following steps:
when the temperature T of the heat storage structureHeat storage structureAnd a second predetermined temperature T2Satisfies the following relationship: t isHeat storage structure<T2(ii) a And the inlet temperature T of the fluid in the heat dissipation/defrosting pipelineInlet of heat radiation/defrosting pipeline-heat exchangerAnd the outlet temperature T of said fluidHeat dissipation/defrosting pipeline-heat storage structure outletThe relationship between them satisfies: t isInlet of heat radiation/defrosting pipeline-heat exchanger<THeat dissipation/defrosting pipeline-heat exchanger outletWhen the air conditioner is in the heat dissipation/defrosting mode, controlling the air conditioner to exit the heat dissipation/defrosting mode;
wherein the inlet temperature TInlet of heat radiation/defrosting pipeline-heat exchangerThe temperature of the fluid in the heat dissipation/defrosting pipeline at the inlet of the heat dissipation/defrosting pipeline when the fluid enters the outdoor heat exchanger;
the outlet temperature THeat dissipation/defrosting pipeline-heat exchanger outletThe temperature of the fluid in the heat dissipation/defrosting pipeline at the outlet of the heat dissipation/defrosting pipeline when the fluid flows out of the outdoor heat exchanger is obtained.
3. The control method according to claim 1, characterized in that: the control method comprises the following steps:
and when the air conditioner does not meet the condition of entering the heat dissipation/defrosting mode, controlling the air conditioner to enter a heat storage mode.
4. The control method according to claim 3, characterized in that: the control method comprises the following steps:
after the air conditioner enters the heat storage mode, when the temperature T of the heat storage structureHeat storage structureAnd the first preset temperature T1Satisfies the following relationship: t isHeat storage structure>T1And when the air conditioner is in the heat storage mode, the air conditioner is controlled to exit the heat storage mode, and meanwhile the air conditioner is controlled to enter the heat dissipation/defrosting mode.
5. A control device of an air conditioner is characterized in that: performing the control method of any one of claims 1-4; the control device includes:
a first control unit: the first control unit is used for controlling the temperature T of the heat storage structureHeat storage structureAnd the first preset temperature T1Controlling whether the air conditioner enters the heat dissipation/defrosting mode; the first control unit is also used for controlling the temperature T of the heat storage structureHeat storage structureAnd a first predetermined temperature T1Satisfies the following relationship: t isHeat storage structure>T1And when the air conditioner is in the heat dissipation/defrosting mode, controlling the air conditioner to enter the heat dissipation/defrosting mode.
6. An air conditioner comprising a heat dissipating structure (100) and the heat dissipating device of the air conditioner of claim 5, the heat dissipating structure (100) being engaged with a heat dissipating body (200), characterized in that: the heat dissipation structure (100) comprises a heat conduction structure (110) and a heat storage structure (120), the heat conduction structure (110) comprises a first heat conduction structure (111) and a second heat conduction structure (112) which are correspondingly arranged, the first heat conduction structure (111) is arranged on the heat dissipation body (200), and the second heat conduction structure (112) is arranged on the heat storage structure (120); after the first heat conduction structure (111) is matched with the second heat conduction structure (112), the heat of the heat dissipation main body (200) is transferred to the heat storage structure (120) so as to realize the heat dissipation of the heat dissipation main body (200).
7. The air conditioner according to claim 6, wherein: the heat storage structure (120) and an outdoor heat exchanger (300) of the air conditioner form a heat dissipation/defrosting loop through a heat dissipation/defrosting pipeline (130); the number of the second heat conduction structures (112) is more than two, and the heat dissipation/defrosting pipelines (130) are arranged around the second heat conduction structures (112).
8. The air conditioner according to claim 6, wherein: the relationship between the thickness d1 of the thermal storage structure (120) and the height h1 of the heat/frost dissipating line (130) to the bottom of the thermal storage structure (120) is: 1/3d1 is not less than h1 is not less than 2/3d 1.
9. The air conditioner according to claim 6, wherein: the first heat conducting structure (111) is a heat conducting rod or a slot, and the second heat conducting structure (112) is a slot or a heat conducting rod.
10. An air conditioner, characterized in that: performing the control method of any one of claims 1-5.
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