CN109724227B - Air conditioner and control strategy of air conditioner - Google Patents
Air conditioner and control strategy of air conditioner Download PDFInfo
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- CN109724227B CN109724227B CN201711034780.1A CN201711034780A CN109724227B CN 109724227 B CN109724227 B CN 109724227B CN 201711034780 A CN201711034780 A CN 201711034780A CN 109724227 B CN109724227 B CN 109724227B
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- 238000011217 control strategy Methods 0.000 title claims abstract description 28
- 239000003507 refrigerant Substances 0.000 claims abstract description 41
- 230000008859 change Effects 0.000 claims description 146
- 238000005338 heat storage Methods 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 26
- 230000008929 regeneration Effects 0.000 claims description 18
- 238000011069 regeneration method Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 238000005057 refrigeration Methods 0.000 abstract description 11
- 230000007704 transition Effects 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 164
- 238000004378 air conditioning Methods 0.000 description 14
- 239000007787 solid Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 12
- 238000004806 packaging method and process Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
- F24F1/032—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- 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
- F25B39/00—Evaporators; Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner and a control strategy of the air conditioner, wherein the air conditioner comprises: the compressor, the switching-over unit, first heat exchanger, phase transition heat-retaining heat exchanger, throttling arrangement, temperature sensor, human body sensor, control module and box, the compressor the switching-over unit the phase transition heat-retaining heat exchanger throttling arrangement first heat exchanger links to each other and forms refrigerant circulation circuit, phase transition heat-retaining heat exchanger has the sensor that is used for detecting phase transition medium one-phase content, the sensor temperature sensor human body sensor the compressor all with the control module electricity is connected, temperature sensor is used for detecting ambient temperature. The air conditioner provided by the invention does not need to release heat to the environment during refrigeration, does not need to absorb heat from the environment during heating, realizes an integrated design, and has high intelligent degree of operation.
Description
Technical Field
The invention belongs to the technical field of air conditioner manufacturing, and particularly relates to an air conditioner and a control strategy of the air conditioner.
Background
The air conditioner generally adopts a split structure comprising an indoor unit and an outdoor unit, not only occupies certain indoor and outdoor space, but also is not beautiful, and in the working process, heat can be released to the environment to cause heat pollution, the intelligent degree of the air conditioner is low, and all operations are manually completed by a user.
Disclosure of Invention
The invention provides an air conditioner.
An air conditioner according to an embodiment of the present invention includes: the compressor, the switching-over unit, first heat exchanger, phase transition heat-retaining heat exchanger, throttling arrangement, temperature sensor, human body sensor, control module and box, the compressor the switching-over unit the phase transition heat-retaining heat exchanger throttling arrangement first heat exchanger links to each other and forms refrigerant circulation circuit, phase transition heat-retaining heat exchanger has the sensor that is used for detecting phase transition medium one-phase content, the sensor temperature sensor human body sensor the compressor all with the control module electricity is connected, temperature sensor is used for detecting ambient temperature.
According to the air conditioner provided by the embodiment of the invention, heat does not need to be released to the environment during refrigeration, heat does not need to be absorbed from the environment during heating, an integrated design is realized, and the intelligent degree of operation is high.
According to the air conditioner of one embodiment of the invention, the temperature sensor is a plurality of temperature sensors, and the plurality of temperature sensors are distributed in the box body at intervals.
According to the air conditioner of one embodiment of the invention, at least one of the plurality of temperature sensors is installed at the air outlet of the air conditioner.
The invention also provides a control strategy of the air conditioner, which comprises the following steps: s1, judging whether an air conditioner is in operation or not; s21, if the air conditioner is in operation, judging whether people exist around the air conditioner; s31a, if no person is around the air conditioner, judging whether the unmanned time exceeds a preset time; s41a, if the air conditioner is unmanned after exceeding the preset time, judging whether the ambient temperature reaches a set value; s51a, if the ambient temperature reaches a set value, closing the air conditioner, detecting the corresponding phase content of the phase change medium of the phase change heat storage heat exchanger, and judging whether the corresponding phase content of the phase change medium is smaller than a first preset amount; s61a, if the content of the corresponding phase of the phase change medium is smaller than a first preset amount, the air conditioner starts a regeneration cycle, and when the content of the corresponding phase of the phase change medium is larger than a second preset amount, the air conditioner closes the regeneration cycle.
According to the control strategy of the air conditioner of one embodiment of the present invention, after the step S21, the method further includes the steps of: s31b, if people exist around the air conditioner, detecting the corresponding phase content of the phase change medium, and prompting a user that the corresponding phase content of the phase change medium is insufficient when the corresponding phase content of the phase change medium is smaller than a first preset amount.
According to the control strategy of the air conditioner of one embodiment of the present invention, in the step S31a, if the time of no people around the air conditioner does not exceed the predetermined time, the control strategy returns to the step S1; if the ambient temperature does not reach the set value in the step S41a, returning to the step S1; if the content of the corresponding one phase of the phase change medium is not less than the first predetermined amount in the step S51a, returning to the step S1; after the step S61a, the process returns to step S1.
According to the control strategy of the air conditioner of one embodiment of the present invention, after the step S1, the method further includes the steps of: s22, if the air conditioner does not operate, judging whether people exist around the air conditioner or not; s32a, if the periphery of the air conditioner is unmanned, detecting the corresponding phase content of the phase change medium of the phase change heat storage heat exchanger, and judging whether the corresponding phase content of the phase change medium is smaller than a first preset amount or not; if the content of the corresponding phase of the phase-change medium is less than the first predetermined amount, step S61a is performed.
According to the control strategy of the air conditioner in one embodiment of the present invention, in the step S32a, if the content of the corresponding phase of the phase change medium is not less than the first predetermined amount, the process returns to the step S1.
The control strategy of the air conditioner according to an embodiment of the present invention further includes, after the step S22, the steps of: s32b, if people exist around the air conditioner and the ambient temperature reaches a preset value, detecting the corresponding one-phase content of the phase change medium; and S33b, when the content of the corresponding phase of the phase change medium is less than the first predetermined amount, prompting the user that the content of the corresponding phase of the phase change medium is insufficient, and returning to the step S1, and when the content of the corresponding phase of the phase change medium is not less than the first predetermined amount, prompting the user to start the air conditioner.
According to the control strategy of the air conditioner of an embodiment of the present invention, the air conditioner is a portable air conditioner, and after the step S22, the method further includes the steps of: and S32c, if people exist around the air conditioner, detecting the corresponding phase content of the phase change medium, prompting a user that the corresponding phase content of the phase change medium is insufficient when the corresponding phase content of the phase change medium is less than a first preset amount, and returning to the step S1.
The control strategy of the air conditioner is the same as the advantages of the air conditioner compared with the prior art, and the detailed description is omitted.
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 structural view of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a phase change heat storage heat exchanger according to an embodiment of the invention;
fig. 3 is a schematic structural view of a distance sensor according to an embodiment of the present invention mounted to an upper cover;
fig. 4 is a schematic diagram of an air conditioner according to an embodiment of the present invention;
fig. 5 and 6 are external structural views of an air conditioner according to an embodiment of the present invention;
FIG. 7 is a logic diagram of a control strategy for a non-mobile air conditioner according to an embodiment of the present invention;
fig. 8 is a logic diagram of a control strategy of a mobile air conditioner according to an embodiment of the present invention.
Reference numerals:
the phase change heat storage heat exchanger 1, the packaging container 11, the shell 111, the upper cover 112, the phase change medium 12, the distance sensor 13,
a compressor 2, a suction port 21, an exhaust port 22, a first heat exchanger 31,
a commutation unit 4, a first interface 41, a second interface 42, a third interface 43, a fourth interface 44,
a box body 5, an air supply outlet 54, an air return inlet 55,
a first check valve 61, a first dry filter 62, a first restriction element 63, a third check valve 67, a third dry filter 68, a third restriction element 69,
a temperature sensor 81 and a human body sensor 82.
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.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An air conditioner according to an embodiment of the present invention, which may be used in a room environment such as a kitchen, a bedroom, etc., and may be portable, will be described with reference to fig. 1 to 4.
As shown in fig. 1 to 4, an air conditioner according to an embodiment of the present invention includes: the heat exchanger comprises a compressor 2, a first heat exchanger 31, a phase change heat storage heat exchanger 1, a reversing unit 4, a throttling device, a temperature sensor 81, a human body sensor 82, a fan (not shown in the figure), a control module and a box body 5.
The compressor 2, the first heat exchanger 31, the reversing unit 4, the phase-change heat storage heat exchanger 1 and the throttling device are all arranged in the box body 5, and the refrigeration system pipeline is laid in the box body 5. That is to say, the air conditioner has integral structure, and overall structure is compacter, need not to establish indoor set outdoor unit alone, simple to operate.
The compressor 2, the phase change heat storage heat exchanger 1, the throttling device, the reversing unit 4 and the first heat exchanger 31 are connected to form a refrigerant circulation loop, and the compressor 2, the phase change heat storage heat exchanger 1, the throttling device and the first heat exchanger 31 can be communicated through copper pipes.
The box body 5 is provided with a blast opening 54 and a return air opening 55, the first heat exchanger 31 is arranged between the blast opening 54 and the return air opening 55, air enters and exits the box body 5 through the return air opening 55 and the blast opening 54 in the working process, and the fan is used for promoting the circulation of the air inside and outside the box body 5 and exchanging heat with the first heat exchanger 31 so as to realize the indoor air temperature regulation. For example, the first heat exchanger 31 may be an air-cooled heat exchanger, and a fan of the air-cooled heat exchanger draws outside air into the box 5, exchanges heat with refrigerant in the first heat exchanger 31, and blows the air into the room through the air outlet 54.
The compressor 2 has a discharge port 22 and a suction port 21, the refrigerant after heat exchange can enter the compressor 2 through the suction port 21, and the refrigerant can be discharged from the discharge port 22 after being compressed by the compressor 2, it should be noted that the structure and the operation principle of the compressor 2 are well known to those skilled in the art, and will not be described in detail herein.
As shown in fig. 2, the phase-change heat storage heat exchanger 1 includes: the phase change heat storage heat exchanger 1 comprises a packaging container, a distance sensor 13, a phase change medium 12 and a built-in heat exchanger (not shown in the figure), wherein the phase change medium 12 is filled in the packaging container, the built-in heat exchanger is arranged in the packaging container to exchange heat with the phase change medium 12, the phase change heat storage heat exchanger 1 is provided with a sensor for detecting the phase change medium one-phase content, for example, the sensor can comprise a distance sensor 13 arranged on the top wall of the packaging container, the distance sensor 13 faces the phase change medium 12, the distance sensor 13 is used for detecting the height of the top surface of the phase change medium 12, and the distance sensor 13 can.
It can be understood that when the built-in heat exchanger exchanges heat with the phase change medium 12, the composition of the phase change medium 12 may change, for example, in fig. 2, the phase change medium 12 includes a solid phase and a liquid phase, and the density of the phase change medium 12 under the solid phase and the liquid phase is different, which results in a change in the total volume of the phase change medium 12, that is, a change in the height of the phase change medium 12, and the content of the phase change medium 12 can be characterized by detecting the height change of the phase change medium 12 through the distance sensor 13.
Preferably, as shown in fig. 2, the packaging container 11 includes: a housing 111 and an upper cover 112. The upper end of the casing 111 is open, the built-in heat exchanger is installed in the casing 111, the phase change medium 12 is filled in the casing 111, so that the built-in heat exchanger is covered by the heat exchange medium, the upper cover 112 closes the casing 111, and the distance sensor 13 is installed on the lower surface of the upper cover 112, for example, the distance sensor 13 can be connected with the upper cover 112 through a threaded fastener. The distance sensors 13 may be a plurality of distance sensors 13, and the plurality of distance sensors 13 are spaced apart from each other and distributed on the upper cover 112, and detect heights of a plurality of regions of the top surface of the heat exchange medium to reduce a measurement error, specifically, the upper cover 112 is rectangular, four of the plurality of distance sensors 13 are distributed at four corners of the upper cover 112, and another distance sensor 13 is installed at a middle portion of the upper cover 112.
For example, the air conditioner may further include: the phase change detection device comprises a control module, an alarm and a display, wherein the control module is connected with a distance sensor 13 to detect the content of the phase change medium 12, the alarm is connected with the control module to give an alarm when the content of one phase of the phase change medium 12 reaches a preset value, and the display is connected with the control module to display the content of at least one phase of the phase change medium 12. The controller is used for receiving the height information of the phase change medium 12 detected by the distance sensor 13 and converting the height information into the contents of the liquid phase change medium 12 and the solid phase change medium 12, wherein each phase content of the phase change medium 12 represents the time for which the air conditioner can still operate. For example, in summer, the display may display the solid content of the phase change medium 12, and the alarm may issue an alarm to prompt a user when the solid content of the phase change medium 12 reaches a predetermined value, and may be a buzzer or the like.
The reversing unit 4 comprises a first interface 41, a second interface 42, a third interface 43 and a fourth interface 44, the compressor 2 is provided with an air suction port 21 and an air exhaust port 22, the air exhaust port 22 is connected with the first interface 41, the air suction port 21 is connected with the third interface 43, one end of the first heat exchanger 31 is connected with the second interface 42, one end of a built-in heat exchanger of the phase-change heat storage heat exchanger 1 is connected with the other end of the first heat exchanger 31 through a throttling device, and the other end of the built-in heat exchanger of the phase-change heat storage heat exchanger 1 is connected with the fourth interface 44.
The first port 41 may be in commutation communication with one of the second port 42 and the fourth port 44, and the third port 43 may be in commutation communication with the other of the second port 42 and the fourth port 44. For example, when the first port 41 communicates with the second port 42, the third port 43 communicates with the fourth port 44; when the first port 41 communicates with the fourth port 44, the third port 43 communicates with the second port 42. Thus, the air conditioner can be switched between the cooling mode and the heating mode. Alternatively, the reversing unit 4 may be a four-way reversing valve, but is not limited thereto.
When the refrigerant flows through the first heat exchanger 31, the refrigerant exchanges heat with air, and the purpose of cooling or heating is achieved. After the refrigerant enters the phase-change heat storage heat exchanger 1, the refrigerant can exchange heat with the phase-change medium 12 in the phase-change heat storage heat exchanger 1, the phase-change medium 12 absorbs or releases heat and then realizes heat storage and release through the change of self phase state, and the refrigerant does not need to exchange heat with the environment after exchanging heat in the phase-change heat storage heat exchanger 1, so that the air conditioner does not need to release heat to the environment when refrigerating, does not need to absorb heat from the environment when heating, and further can realize the integrated structure of the air conditioner, and the conventional split structure of the traditional air conditioner is broken.
For example, when the suction port 21 is connected to the first end of the first heat exchanger 31 and the discharge port 22 is connected to the first end of the phase-change heat storage heat exchanger 1, the air conditioner can provide cooling energy to the user. The high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port 22 can flow to the phase-change heat storage heat exchanger 1, the refrigerant forms a liquid refrigerant after exchanging heat with the phase-change medium 12 in the phase-change heat storage heat exchanger 1 and flows to the throttling device from the phase-change heat storage heat exchanger 1, the refrigerant forms a low-temperature and low-pressure liquid refrigerant after being throttled and depressurized by the throttling device and flows to the first heat exchanger 31, the refrigerant exchanges heat with air in the first heat exchanger 31 to provide cold energy for a user and form a gaseous refrigerant, and then the refrigerant returns to the compressor 2 from the air suction port 21.
Accordingly, when the suction port 21 is connected to the first end of the phase-change heat storage heat exchanger 1 and the discharge port 22 is connected to the first end of the first heat exchanger 31, the air conditioner can provide heat to the user.
Specifically, when the air conditioner operates to cool, the first port 41 of the reversing unit 4 communicates with the fourth port 44, and the third port 43 communicates with the second port 42. The refrigerant passes through the exhaust port 22 of the compressor 2, the first interface 41 and the fourth interface 44 of the reversing unit 4, the built-in heat exchanger of the phase-change heat storage heat exchanger 1, the throttling device, the first heat exchanger 31, the second interface 42 and the third interface 43 of the reversing unit 4 in sequence, and finally returns to the compressor 2 from the suction port 21 of the compressor 2, and the circulation is carried out. At this time, the first heat exchanger 31 is an evaporator, and the built-in heat exchanger of the phase change heat storage heat exchanger 1 is a condenser. When flowing through the built-in heat exchanger of the phase change heat storage heat exchanger 1, the refrigerant exchanges heat with the phase change medium 12, the heat released by the refrigerant is absorbed and stored by the phase change medium 12, and the state of the phase change medium 12 changes, for example, from a solid state to a liquid state. When the refrigerant flows through the first heat exchanger 31, the refrigerant exchanges heat with air to absorb heat in the air, so that the purpose of refrigeration is achieved.
When the air conditioner is operated to generate heat, the switching unit 4 can switch the flow direction of the refrigerant, the first interface 41 of the switching unit 4 is communicated with the second interface 42, and the third interface 43 is communicated with the fourth interface 44. In the process, the refrigerant sequentially passes through the exhaust port 22 of the compressor 2, the first interface 41 and the second interface 42 of the reversing unit 4, the first heat exchanger 31, the throttling device, the built-in heat exchanger of the phase change heat storage heat exchanger 1, the fourth interface 44 and the third interface 43 of the reversing unit 4, and finally returns to the compressor 2 from the suction port 21 of the compressor 2, and the circulation is carried out. At this time, the built-in heat exchanger of the phase change heat storage heat exchanger 1 is an evaporator, and the first heat exchanger 31 is a condenser. When the refrigerant flows through the built-in heat exchanger of the phase change heat storage heat exchanger 1, the refrigerant exchanges heat with the phase change medium 12, the refrigerant absorbs the heat stored in the phase change medium 12, and the state of the phase change medium 12 changes, for example, from a liquid state to a solid state. When flowing through the first heat exchanger 31, the refrigerant exchanges heat with air to release heat to the air, thereby achieving the purpose of heating.
During the refrigeration operation of the air conditioner, the phase change medium 12 absorbs and stores the condensation heat, so that the state of the phase change medium is changed from a solid state to a liquid state. When the phase change medium 12 is completely converted into the liquid state, the heat storage capacity of the phase change medium reaches the upper limit, and at this time, the air conditioning apparatus cannot continue to perform cooling, and the air conditioning apparatus needs to start the first regeneration process to recover the heat storage capacity of the phase change medium 12, and certainly, when the phase change medium 12 is not completely converted into the liquid state, if cooking is completed, the first regeneration process can also be started to maximize the heat storage capacity of the phase change medium 12. The process is similar to battery charging, and can ensure that the phase change medium 12 is completely changed from a liquid state to a solid state in a short time, and the heat storage capacity is restored again, so that the air conditioning device can continue to refrigerate. The first regeneration process of the phase change medium 12 is implemented by stopping the refrigeration cycle of the air conditioner, and then starting the heating cycle of the air conditioner to make the refrigerant absorb the heat stored in the phase change medium 12, so that the phase change medium 12 is changed from a liquid state to a solid state, and the heat storage capacity is recovered. The regeneration process may be initiated when the air conditioning unit does not require cooling, such as during an evening period. Because hot air can be fed in the first regeneration process, the space where the air conditioner is located and doors and windows communicated with the room need to be closed, and heat is prevented from entering other indoor spaces. The space where the air conditioner is located and the window communicated with the outdoor can be opened so as to facilitate air circulation, and the outdoor air can take away heat in the kitchen. Of course, when the air conditioner is a portable air conditioner, the above process can be carried out outdoors to avoid the influence of cold air blown out by the air conditioner on the indoor air state.
In the process of refrigerating operation of the air conditioning device, the display can display the solid content of the phase change medium 12, and the alarm gives an alarm to prompt a user when the solid content of the phase change medium 12 reaches a preset value, wherein the alarm can be a buzzer and the like.
Likewise, during heating operation of the air conditioning apparatus, the phase change medium 12 changes from a liquid state to a solid state as the refrigerant absorbs heat from the phase change medium 12. When the phase change medium 12 is completely converted into the solid state, the heat release capacity reaches the upper limit, and at this time, the air conditioning system component cannot continue heating, and the air conditioning system component needs to start the second regeneration process to recover the heat release capacity of the phase change medium 12, and certainly, when the phase change medium 12 is not completely converted into the solid state, if cooking is completed, the second regeneration process can also be started to maximize the heat release capacity of the phase change medium 12. The second regeneration process is opposite to the first regeneration process, so that the phase change medium 12 is completely changed from a solid state to a liquid state in a short time, and the heat release capacity is recovered, so that the air conditioning device can continue to heat. This is achieved by stopping the heating cycle of the air conditioning unit and starting the refrigeration cycle of the air conditioning unit, during which the phase change medium 12 absorbs and stores the heat of condensation, changing from a solid state to a liquid state, thereby recovering the heat release capacity. This second regeneration process is typically initiated when the air conditioning unit does not require heating. Because cold air can be fed in the second regeneration process, the space where the air conditioner is located and doors and windows communicated with the room need to be closed, and the cold air is prevented from entering other indoor spaces. The window communicating the space where the air conditioner is located and the outside can be opened to allow air to circulate. Of course, when the air conditioner is a portable air conditioner, the above process can be carried out outdoors to avoid the influence of cold air blown out by the air conditioner on the indoor air state.
In the process of heating operation of the air conditioning device, the display can display the liquid phase content of the phase change medium 12, and when the liquid phase content of the phase change medium 12 reaches a preset value, the alarm gives an alarm to prompt a user, and the alarm can be a buzzer or the like.
According to some embodiments of the present invention, referring to fig. 1 and 4, the throttling arrangement comprises a first throttling element 63 and a third throttling element 69. The air conditioner further includes: a first throttling branch and a third throttling branch. A first check valve 61 is arranged on the first throttling branch, and a third check valve 67 is arranged on the third throttling branch.
Specifically, one end (e.g., the left end in fig. 6) of the first throttling branch is connected to the first heat exchanger 31, and the other end (e.g., the right end in fig. 4) of the first throttling branch is connected to the built-in heat exchanger of the phase change heat storage heat exchanger 1. The first throttling element 63 is connected in series with the first check valve 61 on the first throttling branch, and the first check valve 61 is located at one end of the first throttling element 63 adjacent to the built-in heat exchanger of the phase change heat storage heat exchanger 1 to make the refrigerant in the built-in heat exchanger of the phase change heat storage heat exchanger 1 flow to the first throttling element 63. A first dry filter 62 may be further disposed between the first throttling element 63 and the first check valve 61, and the first dry filter 62 is used for absorbing moisture in the refrigerant.
A third throttling branch and the first throttling branch are connected between the first heat exchanger 31 and the built-in heat exchanger of the phase change heat storage heat exchanger 1 in parallel, a third throttling element 69 and a third one-way valve 67 are connected in series on the third throttling branch, and the third one-way valve 67 is positioned at one end of the third throttling element 69 adjacent to the first heat exchanger 31 so as to enable the refrigerant in the first heat exchanger 31 to flow to the third throttling element 69. A third dry filter 68 may be further disposed between the third throttling element 69 and the third check valve 67, and the third dry filter 68 is used for absorbing moisture in the refrigerant.
Therefore, the refrigerant in the refrigeration process can be throttled and depressurized through the first throttling element 63, and the refrigerant in the heating process can be throttled and depressurized through the third throttling element 69, so that the refrigerant in the refrigeration process and the refrigerant in the heating process can be throttled and depressurized respectively by different throttling elements, the throttling and depressurization effect is ensured, and the refrigeration and heating performance of the air conditioning system assembly is improved.
Alternatively, the first throttling element 63 and the third throttling element 69 may be a capillary tube, a thermal expansion valve, an electronic expansion valve, or the like.
The distance sensor 13, the temperature sensor 81, the human body sensor 82, the compressor and the fan are electrically connected with the control module, the temperature sensor 81 is used for detecting the ambient temperature, as shown in fig. 5 and 6, the temperature sensors 81 are multiple, the temperature sensors 81 are distributed outside the box body at intervals, at least one of the temperature sensors 81 is installed at an air outlet of the air conditioner, other temperature sensors 81 are distributed around the box body to improve the accuracy of temperature detection, the human body sensor 82 is used for detecting whether people exist around, the range is 2m-7m within the radius range, a conventional room can be basically covered, and in order to enable the detection of the human body sensor 82 to be sensitive, the human body sensor 82 is horizontally installed.
The control module of the air conditioner is set to control the working states of the compressor and the fan according to the environmental temperature information collected by the temperature sensor 81, the information whether people exist around the air conditioner and detected by the human body sensor 82 and the phase change medium 12 component information provided by the phase change heat storage heat exchanger.
According to the air conditioner provided by the embodiment of the invention, heat does not need to be released to the environment during refrigeration, heat does not need to be absorbed from the environment during heating, an integrated design is realized, and the intelligent degree of operation is high.
The invention also discloses a control strategy of the air conditioner, the air conditioner is the air conditioner of any one of the embodiments, referring to fig. 7 and 8, the control strategy comprises the following steps: s0. detecting ambient temperature; s1, judging whether an air conditioner is in operation or not; s21, if the air conditioner is in operation, judging whether people exist around the air conditioner; s31a, if no person is around the air conditioner, judging whether the unmanned time exceeds a preset time; s41a, if the air conditioner is unmanned after exceeding the preset time, judging whether the ambient temperature reaches a set value; s51a, if the ambient temperature reaches a set value, closing the air conditioner, detecting the corresponding phase content of the phase change medium 12 of the phase change heat storage heat exchanger, and judging whether the corresponding phase content of the phase change medium 12 is smaller than a first preset amount or not; s61a, if the content of the corresponding phase of the phase change medium 12 is less than a first predetermined amount, the air conditioner starts a regeneration cycle, and when the content of the corresponding phase of the phase change medium 12 is greater than a second predetermined amount, the air conditioner closes the regeneration cycle.
Preferably, step S21 is followed by the steps of: s31b, if people exist around the air conditioner, detecting the corresponding phase content of the phase change medium 12, and prompting a user that the corresponding phase content of the phase change medium 12 is insufficient when the corresponding phase content of the phase change medium 12 is smaller than a first preset amount.
If the time of absence of a person around the air conditioner does not exceed the predetermined time in step S31a, returning to step S1; if the corresponding one-phase content of the phase change medium 12 is not less than the first predetermined amount in step S31b, go back to step S1; if the ambient temperature does not reach the set value in step S41a, go back to step S1; if the corresponding one-phase content of the phase change medium 12 is not less than the first predetermined amount in the step S51a, returning to the step S1; after step S61a, the flow returns to step S1.
Preferably, step S1 is followed by the steps of: s22, if the air conditioner does not operate, judging whether people exist around the air conditioner or not; s32a, if no person exists around the air conditioner, detecting the corresponding phase content of the phase change medium 12 of the phase change heat storage heat exchanger, and judging whether the corresponding phase content of the phase change medium 12 is smaller than a first preset amount or not; if the content of the corresponding one phase of the phase change medium 12 is less than the first predetermined amount, step S61a is performed.
Preferably, if the corresponding one-phase content of the phase change medium 12 is not less than the first predetermined amount in step S32a, the process returns to step S1.
Referring to fig. 7, for the non-mobile air conditioner, after step S22, the method further includes the steps of: s32b, if people exist around the air conditioner and the ambient temperature reaches a preset value, detecting the corresponding phase content of the phase change medium 12; s33b, when the content of the corresponding one phase of the phase change medium 12 is less than the first predetermined amount, prompting the user that the content of the corresponding one phase of the phase change medium 12 is insufficient, and returning to step S1, when the content of the corresponding one phase of the phase change medium 12 is not less than the first predetermined amount, prompting the user to turn on the air conditioner.
Referring to fig. 8, if the air conditioner is a portable air conditioner, after step S22, the method further includes the steps of: and S32c, if people exist around the air conditioner, detecting the corresponding one-phase content of the phase change medium 12, prompting a user that the corresponding one-phase content of the phase change medium 12 is insufficient when the corresponding one-phase content of the phase change medium 12 is smaller than a first preset amount, and returning to the step S1.
According to the control strategy of the air conditioner provided by the embodiment of the invention, the intelligent level of the air conditioner is high, the regeneration process can be automatically carried out, the phase change medium 12 component of the phase change heat storage heat exchanger meets the use requirement when a user uses the air conditioner, the air conditioner can be automatically shut down according to the temperature and the personnel condition, and the air conditioner is energy-saving and environment-friendly.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 control strategy of an air conditioner is characterized in that the air conditioner comprises a compressor, a reversing unit, a first heat exchanger, a phase change heat storage heat exchanger, a throttling device, a temperature sensor, a human body sensor, a control module and a box body, wherein the compressor, the reversing unit, the phase change heat storage heat exchanger, the throttling device and the first heat exchanger are connected to form a refrigerant circulation loop, the phase change heat storage heat exchanger is provided with a sensor for detecting the phase content of a phase change medium, the sensor, the temperature sensor, the human body sensor and the compressor are all electrically connected with the control module, the temperature sensor is used for detecting the ambient temperature,
the control strategy of the air conditioner comprises the following steps:
s1, judging whether an air conditioner is in operation or not;
s21, if the air conditioner is in operation, judging whether people exist around the air conditioner;
s31a, if no person is around the air conditioner, judging whether the unmanned time exceeds a preset time;
s41a, if the air conditioner is unmanned after exceeding the preset time, judging whether the ambient temperature reaches a set value;
s51a, if the ambient temperature reaches a set value, closing the air conditioner, detecting the corresponding phase content of the phase change medium of the phase change heat storage heat exchanger, and judging whether the corresponding phase content of the phase change medium is smaller than a first preset amount;
s61a, if the content of the corresponding phase of the phase change medium is smaller than a first preset amount, the air conditioner starts a regeneration cycle, and when the content of the corresponding phase of the phase change medium is larger than a second preset amount, the air conditioner closes the regeneration cycle.
2. The control strategy of an air conditioner according to claim 1, wherein the temperature sensor is plural, and the plural temperature sensors are distributed at intervals in the box body.
3. The control strategy of an air conditioner according to claim 2, wherein at least one of said plurality of temperature sensors is installed at an air outlet of said air conditioner.
4. The control strategy of an air conditioner according to any one of claims 1-3, characterized by further comprising, after the step S21, the steps of: s31b, if people exist around the air conditioner, detecting the corresponding phase content of the phase change medium, and prompting a user that the corresponding phase content of the phase change medium is insufficient when the corresponding phase content of the phase change medium is smaller than a first preset amount.
5. The control strategy of air conditioner according to any one of claims 1-3, wherein in the step S31a, if the time of no people around the air conditioner does not exceed the predetermined time, returning to the step S1; if the ambient temperature does not reach the set value in the step S41a, returning to the step S1; if the content of the corresponding one phase of the phase change medium is not less than the first predetermined amount in the step S51a, returning to the step S1; after the step S61a, the process returns to step S1.
6. The control strategy of an air conditioner according to any one of claims 1-3, characterized by further comprising, after the step S1, the steps of:
s22, if the air conditioner does not operate, judging whether people exist around the air conditioner or not;
s32a, if the periphery of the air conditioner is unmanned, detecting the corresponding phase content of the phase change medium of the phase change heat storage heat exchanger, and judging whether the corresponding phase content of the phase change medium is smaller than a first preset amount or not; if the content of the corresponding phase of the phase-change medium is less than the first predetermined amount, step S61a is performed.
7. The control strategy of an air conditioner according to claim 6, wherein if the corresponding one-phase content of the phase change medium is not less than the first predetermined amount in the step S32a, returning to the step S1.
8. The control strategy of an air conditioner according to claim 6, further comprising, after said step S22, the steps of:
s32b, if people exist around the air conditioner and the ambient temperature reaches a preset value, detecting the corresponding one-phase content of the phase change medium;
and S33b, when the content of the corresponding phase of the phase change medium is less than the first predetermined amount, prompting the user that the content of the corresponding phase of the phase change medium is insufficient, and returning to the step S1, and when the content of the corresponding phase of the phase change medium is not less than the first predetermined amount, prompting the user to start the air conditioner.
9. The control strategy of an air conditioner according to claim 6, wherein said air conditioner is a portable air conditioner, and further comprising the steps after said step S22 of: and S32c, if people exist around the air conditioner, detecting the corresponding phase content of the phase change medium, prompting a user that the corresponding phase content of the phase change medium is insufficient when the corresponding phase content of the phase change medium is less than a first preset amount, and returning to the step S1.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011305396.2A CN112393333A (en) | 2017-10-30 | 2017-10-30 | Air conditioner |
| CN201711034780.1A CN109724227B (en) | 2017-10-30 | 2017-10-30 | Air conditioner and control strategy of air conditioner |
| PCT/CN2018/112456 WO2019085864A1 (en) | 2017-10-30 | 2018-10-29 | Air conditioner, control strategy for air conditioner, and air conditioning system |
| US16/760,441 US11287148B2 (en) | 2017-10-30 | 2018-10-29 | Air conditioner, control strategy of the air conditioner, and air conditioning system |
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| CN201711034780.1A CN109724227B (en) | 2017-10-30 | 2017-10-30 | Air conditioner and control strategy of air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09119723A (en) * | 1995-10-25 | 1997-05-06 | Furukawa Electric Co Ltd:The | Heat accumulator and air conditioner system |
| JPH1194296A (en) * | 1997-09-18 | 1999-04-09 | Nissei Reinetsu Service:Kk | Heat-storing-type spot air-conditioning equipment for toilet |
| JP2001330280A (en) * | 2000-05-22 | 2001-11-30 | Matsushita Electric Ind Co Ltd | Ice thermal storage unit |
| KR100431513B1 (en) * | 2001-07-24 | 2004-05-22 | 박희태 | regenerative air-conditioning unit using phase change material and method for thereof |
| CN101464108A (en) * | 2007-12-17 | 2009-06-24 | 王智慧 | Corrugated phase-change heat accumulation element |
| CN201443833U (en) * | 2009-01-05 | 2010-04-28 | 郭海新 | A phase change energy storage tank |
| CN102200403B (en) * | 2011-06-28 | 2013-03-20 | 北京圆能工业技术有限公司 | Branch-control and phase-change heat exchange system and method based on two-stage steam-liquid heat exchanger |
| CN202747502U (en) * | 2012-04-27 | 2013-02-20 | 重庆大学 | Cooling water system based on cold storage of phase change material |
| CN104633841A (en) * | 2013-11-15 | 2015-05-20 | 广东美的暖通设备有限公司 | Air conditioner and control method thereof |
| CN104075378A (en) * | 2014-06-20 | 2014-10-01 | 李渊 | Energy storage air conditioner |
| CN104089351A (en) * | 2014-06-24 | 2014-10-08 | 曾志勇 | Heat pipe and air conditioner all-in-one machine device with phase change regenerator and design method |
| CN104279667B (en) * | 2014-10-11 | 2017-03-01 | 东莞市兆荣节能科技有限公司 | A kind of phase change energy storage air conditioning system |
| CN104913415A (en) * | 2015-05-29 | 2015-09-16 | 广东美的制冷设备有限公司 | Energy storage-type air conditioning system |
| CN105371500B (en) * | 2015-11-13 | 2018-04-20 | 太原理工大学 | Phase-transition heat-storage air friction drag control system and its control method |
| CN106556111A (en) * | 2016-11-24 | 2017-04-05 | 广东美的制冷设备有限公司 | Household electric appliance control method, device, server and air-conditioner |
| CN106524367A (en) * | 2016-12-30 | 2017-03-22 | 广东申菱环境系统股份有限公司 | Energy storage type mobile air conditioner |
| CN107101300B (en) * | 2017-05-17 | 2019-12-06 | 广东美的制冷设备有限公司 | air conditioner, prompting method for replacing heat storage box of air conditioner and computer readable storage medium |
-
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