CN113757792A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
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- CN113757792A CN113757792A CN202111145394.6A CN202111145394A CN113757792A CN 113757792 A CN113757792 A CN 113757792A CN 202111145394 A CN202111145394 A CN 202111145394A CN 113757792 A CN113757792 A CN 113757792A
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- heat exchanger
- compressor
- outdoor
- air conditioner
- indoor
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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
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses an air conditioner, which comprises: the compressor has a compressor inlet and a compressor outlet; the outlet of the indoor main heat exchanger is selectively communicated with one of the inlet and the outlet of the compressor; the outlet of the outdoor main heat exchanger is selectively communicated with the other of the inlet of the compressor and the outlet of the compressor; the air conditioner sub-machine can be movably arranged and is provided with an indoor auxiliary heat exchanger which can be selectively connected with or separated from the indoor main heat exchanger in parallel. And this application has further set up outdoor vice heat exchanger to guarantee the flow stability of compressor under multiple different operating modes, do not fall the frenquency, prolonged the life of compressor.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to an air conditioner.
Background
In the related technology, for an air conditioner provided with an air conditioner sub machine, the indoor auxiliary heat exchanger of the air conditioner sub machine is connected with the indoor main heat exchanger in parallel or separated from the indoor main heat exchanger, when the indoor auxiliary heat exchanger is connected with the indoor main heat exchanger in parallel, the flow of the compressor is large, and when the indoor auxiliary heat exchanger is separated from the indoor main heat exchanger, the flow of the compressor is small, and under the condition that the flow of the compressor is small, the compressor can keep low-frequency operation, and the low-frequency operation can cause the damage of the compressor, thereby seriously affecting the service life of the compressor.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide an air conditioner, in which a sub-air conditioner is disposed, and a sub-air conditioner loop in the sub-air conditioner can be selectively connected to or disconnected from an indoor main heat exchanger in parallel, and the present application further provides an outdoor auxiliary heat exchanger, so as to ensure that the flow of the compressor is stable under various working conditions, and the frequency is not reduced, thereby prolonging the service life of the compressor.
An air conditioner according to the present invention includes: a compressor having a compressor inlet and a compressor outlet; an indoor main heat exchanger having an outlet in selective communication with one of the compressor inlet and the compressor outlet; an outdoor main heat exchanger having an outlet in selective communication with the other of the compressor inlet and the compressor outlet; the air conditioner sub machine is movably arranged and is provided with an indoor auxiliary heat exchanger, and the indoor auxiliary heat exchanger is selectively connected with or separated from the indoor main heat exchanger in parallel; the outdoor auxiliary heat exchanger is suitable for selectively communicating an outlet of the outdoor auxiliary heat exchanger with the other of the inlet of the compressor and the outlet of the compressor when the indoor auxiliary heat exchanger is connected with the indoor main heat exchanger in parallel, so that the flow direction of a refrigerant in the outdoor auxiliary heat exchanger is the same as that of the refrigerant in the outdoor main heat exchanger; the outdoor auxiliary heat exchanger is suitable for selectively communicating the outlet of the outdoor auxiliary heat exchanger with one of the inlet of the compressor and the outlet of the compressor when the indoor auxiliary heat exchanger is separated from the indoor main heat exchanger, so that the flow direction of the refrigerant in the outdoor auxiliary heat exchanger is opposite to the flow direction of the refrigerant in the outdoor main heat exchanger.
According to the air conditioner, the movable air conditioner sub machine is arranged, an indoor auxiliary heat exchanger is arranged in the air conditioner sub machine, the indoor auxiliary heat exchanger is selectively communicated with a heat exchange loop, and the flow direction of a refrigerant in the outdoor auxiliary heat exchanger is controlled to be the same as the flow direction of the refrigerant in the outdoor main heat exchanger when the indoor auxiliary heat exchanger is communicated with the heat exchange loop, so that the heat exchange efficiency of the air conditioner is ensured; when the indoor auxiliary heat exchanger is disconnected with the heat exchange loop, the flow direction of the refrigerant is opposite to that of the refrigerant of the outdoor main heat exchanger, so that the flow of the refrigerant is prevented from being reduced when the air conditioner sub machine is separated from the heat exchange loop, the frequency of the compressor is ensured, and the service life of the compressor is prolonged.
According to one embodiment of the invention, the outlet end of the outdoor secondary heat exchanger is provided with a first expansion valve.
According to an embodiment of the present invention, the air conditioner further includes: the first reversing valve is provided with a first valve port, a second valve port and a third valve port which can be selectively communicated with each other, the first valve port is communicated with an outlet of the compressor, the second valve port is communicated with an inlet of the outdoor auxiliary heat exchanger, and the third valve port is communicated with the inlet of the compressor.
According to one embodiment of the invention, a one-way valve is arranged between the third valve port and the inlet of the compressor.
According to an embodiment of the present invention, the air conditioner further includes: the second reversing valve is provided with fourth to seventh valve ports which can be selectively communicated with each other, the fourth valve port is communicated with the outlet of the compressor, the fifth valve port is communicated with the inlet of the outdoor main heat exchanger, the sixth valve port is communicated with the inlet of the compressor, and the seventh valve port is communicated with the indoor main heat exchanger.
According to an embodiment of the present invention, the air conditioner further includes: and the low-pressure liquid storage tank is arranged between the check valve and the inlet of the compressor and/or between the sixth valve port and the inlet of the compressor.
According to an embodiment of the present invention, the air conditioner further includes: and the high-pressure liquid storage tank is arranged between the indoor main heat exchanger and the outdoor main heat exchanger and/or the outdoor auxiliary heat exchanger.
According to one embodiment of the invention, a second expansion valve is provided between the high pressure liquid storage tank and the outdoor main heat exchanger.
According to an embodiment of the present invention, the air conditioner further includes: and the third expansion valve is arranged between the inlet of the indoor main heat exchanger and the outlet of the outdoor main heat exchanger.
According to an embodiment of the present invention, the air conditioner further includes: and the fourth expansion valve is arranged on the air conditioner sub machine and is connected with the indoor auxiliary heat exchanger in series.
According to one embodiment of the invention, the outdoor secondary heat exchanger is configured as a plate heat exchanger.
According to an embodiment of the present invention, the air conditioner further includes: the air conditioner main unit is internally provided with a sub unit accommodating cabin which can selectively accommodate the sub unit of the air conditioner, a first joint and a second joint are arranged in the sub unit accommodating cabin, the first joint is selectively communicated with an inlet of the indoor main heat exchanger, and the second joint is selectively communicated with an outlet of the indoor main heat exchanger.
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 configuration diagram of a cooling circuit of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an air conditioner case according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a submachine of an air conditioner according to an embodiment of the invention;
FIG. 4 is a cross-sectional view of a sub-air conditioner according to an embodiment of the invention;
FIG. 5 is a partial schematic view of an air conditioner housing according to an embodiment of the present invention;
fig. 6 is a schematic connection diagram of a plate heat exchanger according to an embodiment of the invention;
fig. 7 is an exploded view of a plate heat exchanger according to an embodiment of the invention.
Reference numerals:
in the air-conditioner 1, a heat exchanger is arranged,
an indoor main heat exchanger 12, an indoor main heat exchanger inlet 121, an indoor main heat exchanger outlet 122,
an outdoor main heat exchanger 13, an outdoor main heat exchanger inlet 131, an outdoor main heat exchanger outlet 132,
an outdoor auxiliary heat exchanger 14, an outdoor auxiliary heat exchanger inlet 141, an outdoor auxiliary heat exchanger outlet 142,
an indoor auxiliary heat exchanger 15, an indoor auxiliary heat exchanger inlet 151, an indoor auxiliary heat exchanger outlet 152,
a first expansion valve 161, a second expansion valve 162, a third expansion valve 163, a fourth expansion valve 164,
a first direction valve 17, a first port 171, a second port 172, a third port 173,
a second direction valve 18, a fourth valve port 181, a fifth valve port 182, a sixth valve port 183, a seventh valve port 184, a low-pressure liquid storage tank 191, a high-pressure liquid storage tank 192,
the one-way valve 101 is arranged in the housing,
the air conditioner main machine 2 and the sub machine accommodating cavity 21;
the air conditioner sub-machine 3, the centrifugal fan 31, the cold accumulation water tank 32, the first joint 331, the second joint 332, the plate heat exchanger 34, the heat exchange plate 341, the sealing rubber 342, the mounting cover 343, the mounting box 344,
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.
An air conditioner according to an embodiment of the present invention will be described below with reference to fig. 1 to 7.
The air conditioner according to the present invention includes a compressor 11, an indoor main heat exchanger 12, and an outdoor main heat exchanger 13. The compressor 11 has a compressor inlet 111 and a compressor outlet 112, an outlet of the indoor main heat exchanger 12 is selectively communicated with one of the compressor inlet 111 and the compressor outlet 112, an outlet of the outdoor main heat exchanger 13 is selectively communicated with the other of the compressor inlet 111 and the compressor outlet 112, and the indoor main heat exchanger 12 is communicated with the outdoor main heat exchanger 13 to form a heat exchange loop among the compressor 11, the indoor main heat exchanger 12 and the outdoor main heat exchanger 13, and by arranging the outlet of the indoor main heat exchanger 12 to be selectively communicated with one of the compressor inlet 111 and the compressor outlet 112, the flow direction of a refrigerant in the heat exchange loop can be changed, so that the air conditioner is controlled to perform cooling or heating.
According to the air conditioner, the air conditioner sub-machine 3 is further arranged, the air conditioner sub-machine 3 can be movably arranged to move indoors, meanwhile, the indoor auxiliary heat exchanger 15 is arranged in the air conditioner sub-machine 3, and the air conditioner sub-machine 3 can be used for performing auxiliary temperature adjustment on the area which cannot be covered by the indoor main heat exchanger 12 in a moving mode, so that the temperature adjustment range which can be covered by the air conditioner is enlarged. An indoor auxiliary heat exchanger 15 is arranged in the air conditioner sub-machine 3, the indoor auxiliary heat exchanger 15 can be connected with or separated from the indoor main heat exchanger 12 in parallel, and when the indoor auxiliary heat exchanger 15 is connected with the air conditioner main machine in parallel, part of refrigerant can pass through the indoor auxiliary heat exchanger 15 so as to supplement cold or heat for the air conditioner sub-machine 3.
The air conditioner sub-machine 3 can be internally provided with a heat storage or cold storage device which can exchange heat or be communicated with the indoor auxiliary heat exchanger 15 to store heat or cold, and the air conditioner sub-machine 3 can exchange heat indoors after moving to other indoor positions.
In the related art, for an air conditioner provided with an air conditioner sub machine, an indoor auxiliary heat exchanger is connected with an indoor main heat exchanger in parallel or separated from the indoor main heat exchanger, when the indoor auxiliary heat exchanger is connected with the indoor main heat exchanger in parallel, the flow of a compressor is large, when the indoor auxiliary heat exchanger is separated from the indoor main heat exchanger, the flow of the compressor is small, and under the condition that the flow of the compressor is small, the compressor can keep low-frequency operation, the low-frequency operation can cause damage to the compressor, and the service life of the compressor is seriously influenced.
Therefore, according to the air conditioner provided by the application, the outdoor auxiliary heat exchanger 14 is further arranged, when the indoor auxiliary heat exchanger 15 is connected with the indoor main heat exchanger 12 in parallel, the outlet of the outdoor auxiliary heat exchanger 14 is communicated with the other of the compressor inlet 111 and the outlet of the compressor 11, namely, the flow direction of the refrigerant in the outdoor auxiliary heat exchanger 14 is consistent with that of the refrigerant in the outdoor main heat exchanger 13, so that the heat exchange efficiency of the refrigerant is improved, and the influence on the heat exchange efficiency of the indoor main heat exchanger 12 when the indoor auxiliary heat exchanger 15 is increased is reduced.
Here, the refrigerant flow direction in the outdoor main heat exchanger 13 and the outdoor sub heat exchanger 14 refers to the refrigerant flow direction from the compressor 11 to the indoor sub heat exchanger 15.
The outdoor auxiliary heat exchanger 14 is adapted to communicate the outlet of the outdoor auxiliary heat exchanger 14 with one of the compressor inlet 111 and the outlet of the compressor 11 when the indoor auxiliary heat exchanger 15 is disconnected from the indoor main heat exchanger 12, the refrigerant flow directions in the outdoor auxiliary heat exchanger 14 and the outdoor main heat exchanger 13 are opposite, and the working conditions of the outdoor auxiliary heat exchanger 14 and the outdoor main heat exchanger 13 are also opposite. When the air conditioner is in a heating working condition, the outdoor main heat exchanger 13 absorbs external heat, and the outdoor auxiliary heat exchanger 14 is used as a condenser at the moment; when the air conditioner is in a refrigeration working condition, the outdoor main heat exchanger 13 emits heat to the outside, and the outdoor auxiliary heat exchanger 14 is used as an evaporator; the outdoor auxiliary heat exchanger 14 can improve the heat absorption efficiency of the outdoor main heat exchanger 13, and at this time, the flow rate of the refrigerant in the compressor 11 is not reduced, and the frequency of the compressor 11 does not need to be reduced, thereby avoiding the loss of the compressor 11 in a low-frequency state and prolonging the service life of the compressor 11.
According to the air conditioner, the movable air conditioner sub-machine 3 is arranged, the indoor auxiliary heat exchanger 15 is arranged in the air conditioner sub-machine 3, the indoor auxiliary heat exchanger 15 can be selectively communicated with the heat exchange loop, and the flow direction of a refrigerant in the outdoor auxiliary heat exchanger 14 is controlled to be the same as the flow direction of the refrigerant in the outdoor main heat exchanger 13 when the indoor auxiliary heat exchanger 15 is communicated with the heat exchange loop, so that the heat exchange efficiency of the air conditioner is ensured; when the indoor auxiliary heat exchanger 15 is disconnected from the heat exchange loop, the flow direction of the refrigerant is opposite to that of the outdoor main heat exchanger 13, so that the flow of the refrigerant is prevented from being reduced when the air conditioner sub-machine 3 is separated from the heat exchange loop, the frequency of the compressor 11 is ensured, and the service life of the compressor 11 is prolonged.
According to an embodiment of the present invention, the outlet end of the outdoor secondary heat exchanger 14 is provided with a first expansion valve 161, after the air conditioner sub-machine 3 is separated from the heat exchange loop, the indoor auxiliary heat exchanger 15 is separated, the air conditioner is in a refrigeration working condition, the flow direction of the refrigerant in the outdoor auxiliary heat exchanger 14 is opposite to the flow direction of the refrigerant in the outdoor main heat exchanger 13, the refrigerant after heat exchange of the outdoor main heat exchanger 13 enters the outdoor auxiliary heat exchanger 14 through the first expansion valve 161, so that the medium-temperature and high-pressure refrigerant is throttled by the first expansion valve 161 to form low-temperature and low-pressure wet vapor, the refrigerant of low temperature and low pressure absorbs the heat of the outside after passing through the auxiliary outdoor heat exchanger 14, and returns to the compressor 11 again, after the indoor auxiliary heat exchanger 15 is separated, the flow of the refrigerant passing through the compressor 11 in the heat exchange loop is ensured not to change, the compressor 11 is prevented from reducing the frequency, and the service life of the compressor 11 is prolonged.
Similarly, when the air conditioner is in a heating working condition, the refrigerant of the compressor 11 passes through the indoor main heat exchanger 12 and the indoor auxiliary heat exchanger 15 at the same time, then enters the outdoor auxiliary heat exchanger 14 through the first expansion valve 161, and further flows back to the compressor inlet 111 after passing through the outdoor auxiliary heat exchanger 14; when the refrigerant of the compressor 11 passes through the indoor main heat exchanger 12 alone and the indoor auxiliary heat exchanger 15 is in a disengaged state, the refrigerant passing through the outdoor main heat exchanger 13 enters the compressor inlet 111, and a part of the refrigerant at the compressor outlet 112 enters the outdoor auxiliary heat exchanger 14, the refrigerant in the outdoor auxiliary heat exchanger 14 flows in a direction opposite to the refrigerant flow direction of the outdoor main heat exchanger 13 and is used as an evaporator to release heat, and the refrigerant passes through the first expansion valve 161 and enters the outdoor main heat exchanger 13. The refrigerant flow passing through the compressor 11 in the heat exchange loop is ensured not to change, the compressor 11 is prevented from reducing the frequency, and the service life of the compressor 11 is prolonged.
According to an embodiment of the present invention, the outdoor main heat exchanger 13 and the outdoor auxiliary heat exchanger 14 are arranged in parallel, after the sub-air conditioner 3 is disengaged from the heat exchange loop, the indoor auxiliary heat exchanger 15 is disengaged, so that the flow rate of the refrigerant passing through the compressor 11 is reduced, and in order to avoid the frequency reduction of the compressor 11, by controlling the communication relationship between the outdoor auxiliary heat exchanger 14 and the compressor inlet 111 and the compressor outlet 112, the flow direction of the refrigerant in the outdoor auxiliary heat exchanger 14 is opposite to the flow direction of the refrigerant in the outdoor main heat exchanger 13, so that different functions can be realized between the outdoor auxiliary heat exchanger 14 and the outdoor main heat exchanger 13.
For example, under the refrigeration condition of the air conditioner, the outdoor auxiliary heat exchanger 14 releases heat as an evaporator, and at the moment, the outdoor auxiliary heat exchanger 14 can absorb heat as a condenser, so that the heat exchange efficiency of the outdoor auxiliary heat exchanger 14 is improved, meanwhile, the reduction of refrigerant flow in a heat exchange loop is avoided, and the frequency of the compressor 11 is ensured. Similarly, under the heating condition of the air conditioner, the outdoor auxiliary heat exchanger 14 absorbs heat as a condenser, and at the moment, the outdoor auxiliary heat exchanger 14 can release heat as an evaporator, so that the heat exchange efficiency of the outdoor auxiliary heat exchanger 14 is improved, and meanwhile, the reduction of the flow rate of refrigerant in a heat exchange loop is avoided. The outdoor main heat exchanger 13 and the outdoor auxiliary heat exchanger 14 can exchange heat with each other, so that the heat exchange efficiency between the outdoor main heat exchanger 13 and the outdoor auxiliary heat exchanger 14 is improved, and the heat exchange capacity of the outdoor main heat exchanger 13 is improved.
According to an embodiment of the present invention, the air conditioner further includes a first direction changing valve 17, the first direction changing valve 17 having a first port 171, a second port 172, and a third port 173 selectively communicating with each other, the first port 171 communicating with the outlet of the compressor 11, the second port 172 communicating with the inlet of the outdoor heat exchanger 14, and the third port 173 communicating with the compressor inlet 111. Any two of the first valve port 171, the second valve port 172 and the third valve port 173 in the first direction valve 17 can be selectively communicated with each other to control the flow direction of the refrigerant in the outdoor-outdoor auxiliary heat exchanger 14 and the working state of the outdoor-auxiliary heat exchanger 14, so that the second auxiliary heat exchanger can regulate the popularity of the refrigerant in the outdoor-auxiliary heat exchanger 14 according to the current working mode of the air conditioner, and meanwhile, whether the flow directions of the refrigerant in the outdoor-auxiliary heat exchanger 14 and the refrigerant in the outdoor main heat exchanger 13 are consistent or not can be selected according to whether the indoor auxiliary heat exchanger 15 is communicated with the heat exchange loop or not, so that whether the indoor auxiliary heat exchanger 15 is connected into the heat exchanger loop or not is realized, the flow of the compressor 11 is maintained, the compressor 11 is prevented from being subjected to frequency reduction, the working mode of the compressor 11 is optimized, and the service life of the air conditioner is prolonged.
According to an embodiment of the present invention, a check valve 101 for limiting a unidirectional flow of the refrigerant is disposed between the third valve port 173 and the compressor inlet 111, and the check valve 101 is used for ensuring that the refrigerant can only flow from the third valve port 173 to the compressor inlet 111 in a unidirectional manner. In the heating mode, after the indoor auxiliary heat exchanger 15 is separated from the heat exchange loop, because the flow directions of the refrigerant in the outdoor auxiliary heat exchanger 14 and the outdoor main heat exchanger 13 are opposite, the flow direction of the refrigerant in the outdoor auxiliary heat exchanger 14 flows from the outdoor auxiliary heat exchanger outlet 142 to the outdoor auxiliary heat exchanger inlet 141, at this time, the outdoor auxiliary heat exchanger 14 serves as a condenser, the refrigerant passing through the outdoor auxiliary heat exchanger 14 can flow from the outdoor auxiliary heat exchanger inlet 141 to the compressor inlet 111, and the compressor inlet 111 is simultaneously communicated with the indoor main heat exchanger 12, in order to avoid the refrigerant from the indoor main heat exchanger 12 from flowing reversely, the check valve 101 is arranged between the compressor inlet 111 and the outdoor auxiliary heat exchanger 14, so that the reverse flow of the refrigerant is avoided.
According to an embodiment of the present invention, the air conditioner is further provided with a second direction valve 18, the second direction valve 18 has a fourth valve port 181, a fifth valve port 182, a sixth valve port 183 and a seventh valve port 184 selectively communicated with each other, the fourth valve port 181 is communicated with the compressor inlet 111, the fifth valve port 182 is communicated with the inlet of the outdoor main heat exchanger 13, the sixth valve port 183 is communicated with the compressor inlet 111, and the seventh valve port 184 is communicated with the indoor main heat exchanger 12. The second direction changing valve 18 is used for controlling the communication relationship among the indoor main heat exchanger 12, the outdoor main heat exchanger 131, the compressor inlet 111 and the compressor outlet 112, and the main functions of the air conditioner can be adjusted through the second direction changing valve 18. The second direction valve 18 is provided with a fourth valve port 181, a fifth valve port 182, a sixth valve port 183 and a seventh valve port 184 which are two mutually selectively communicated, so that the flow direction of the refrigerant in the outdoor main heat exchanger 13 and the flow direction of the refrigerant in the indoor main heat exchanger 12 can be controlled, and the switching of the cooling function or the heating function of the air conditioner can be realized.
According to an embodiment of the present invention, the air conditioner further includes a low pressure reservoir 191, the low pressure reservoir 191 being disposed between the check valve 101 and the compressor inlet 111 and/or the sixth valve port 183 and the compressor inlet 111. The low pressure liquid storage tank 191 arranged at the outlet of the compressor 11 is used for storing redundant refrigerant, a loop between the sixth valve port 183 and the compressor inlet 111 can belong to a heat exchange loop between the outdoor main heat exchanger 13 and the indoor main heat exchanger 12, a loop between the check valve 101 and the compressor inlet 111 can belong to a heat exchange loop between the outdoor auxiliary heat exchanger 14 and the indoor main heat exchanger 12, and the low pressure liquid storage tank 191 can be separately arranged under different loops.
In an embodiment of the present invention, the low pressure liquid tank 191 is disposed at the inlet 111 of the compressor, and the low pressure liquid tank 191 is respectively communicated with the outlet of the check valve 101 and the sixth valve port 183 of the compressor 11, so that the heat exchange loop between the outdoor auxiliary heat exchanger 14 and the indoor main heat exchanger 12 and the heat exchange loop between the outdoor main heat exchanger 13 and the indoor main heat exchanger 12 share the same low pressure liquid tank 191, thereby reducing the number of parts in the air conditioner.
According to an embodiment of the present invention, the air conditioner further includes a high pressure liquid storage tank 192, the high pressure liquid storage tank 192 is configured to store a high pressure refrigerant, the high pressure liquid storage tank 192 is disposed between the indoor main heat exchanger 12 and the outdoor main heat exchanger 13, under a heating condition, the high temperature and high pressure refrigerant pressurized by the compressor 11 passes through the outdoor main heat exchanger 13, the refrigerant exchanges heat with outdoor air in the outdoor main heat exchanger 13, and releases heat to the outside air, and further passes through the high pressure liquid storage tank 192 and enters the indoor main heat exchanger 12. The high-pressure liquid storage tank 192 is used for storing a refrigerant, so that after the indoor auxiliary heat exchanger 15 is connected with the indoor main heat exchanger 12 in parallel, the refrigerant quantity in the heat exchange loop is kept sufficient, and the refrigerant can be used for buffering the refrigerant in the heat exchange loop.
Similarly, a high-pressure accumulator 192 may be disposed between the indoor main heat exchanger 12 and the outdoor auxiliary heat exchanger 14, and in a heating condition, a high-temperature and high-pressure refrigerant pressurized by the compressor 11 passes through the outdoor auxiliary heat exchanger 14, and the refrigerant exchanges heat with outdoor air in the outdoor auxiliary heat exchanger 14 to release heat to the outside air, further passes through the high-pressure accumulator 192, and then enters the indoor main heat exchanger 12.
According to an embodiment of the present invention, the inlet end of the indoor main heat exchanger 12 is provided with a high pressure liquid storage tank 192, and the high pressure liquid storage tank 192 is respectively communicated with the outlet of the outdoor main heat exchanger 13 and the outlet of the outdoor auxiliary heat exchanger 14, so that the outdoor main heat exchanger 13 and the outdoor auxiliary heat exchanger 14 share the same high pressure liquid storage tank 192, thereby reducing the number of parts in the air conditioner and reducing the cost of the air conditioner.
According to an embodiment of the present invention, a second expansion valve 162 is disposed between the high pressure liquid storage tank 192 and the outdoor main heat exchanger 13, the second expansion valve 162 can perform throttle expansion control, and when the air conditioner is in a heating condition, high temperature and high pressure gas passing through the outdoor main heat exchanger 13 can be reduced in pressure by the second expansion valve 162 to be changed into a medium temperature and medium pressure refrigerant, and further passes through the indoor heat exchanger, the refrigerant can be converted into a low temperature and low pressure refrigerant to realize a refrigeration heat exchange cycle in the heat exchange loop.
It should be noted here that the outdoor main heat exchanger 13 is located in the main circuit, and the outdoor sub heat exchanger 14 is located on a branch circuit, the branch circuit being connected in parallel with the main circuit, and the first expansion valve 161 is located in the branch circuit, and the second chamber expansion valve is located in the main circuit, so as to perform throttle expansion control on the refrigerant in the main circuit.
According to an embodiment of the present invention, the air conditioner further includes a third expansion valve 163, the third expansion valve 163 is disposed between the inlet 131 of the indoor main heat exchanger and the outlet 132 of the outdoor main heat exchanger, the third expansion valve 163 is applied indoors and can perform throttling control on the refrigerant in the heat exchange loop, when the air conditioner performs a heating operation, the outlet 111 of the compressor is connected to the indoor main heat exchanger 12 to deliver the high-temperature and high-pressure refrigerant to the indoor main heat exchanger 12, the refrigerant releases heat in the indoor main heat exchanger 12 to heat the indoor air, so as to achieve the heating operation in the indoor, after flowing through the indoor main heat exchanger 12, the refrigerant after heat exchange in the third expansion valve 163 can be converted into a low-temperature refrigerant, and after further flowing through the outdoor main heat exchanger 13 and the outdoor auxiliary heat exchanger 14, the heat of the outdoor air can be absorbed by the outdoor.
According to an embodiment of the present invention, an indoor main heat exchanger 12 is disposed on the main circuit in the indoor heat exchange circuit, and a third expansion valve 163 is connected in series with the indoor main heat exchanger 12 for implementing a basic heat exchange function of the indoor main heat exchanger.
Further, in an embodiment of the present invention, the air conditioner further includes a fourth expansion valve 164, the fourth expansion valve 164 is disposed in the sub-air conditioner 3 and is connected in series with the indoor auxiliary heat exchanger 15, a heat exchange branch capable of being connected in parallel with the main loop is disposed in the sub-air conditioner 3, the indoor auxiliary heat exchanger 15 and the fourth expansion valve 164 are sequentially disposed on the heat exchange branch, the fourth expansion valve 164 is used for throttling control of the refrigerant flowing through the indoor auxiliary heat exchanger 15, when the air conditioner performs a heating condition, an outlet of the compressor 11 is connected to the indoor auxiliary heat exchanger 15 to deliver the high-temperature and high-pressure refrigerant to the indoor auxiliary heat exchanger 15, the refrigerant in the indoor auxiliary heat exchanger 15 releases heat to heat the indoor air, so as to achieve the indoor heating condition, the refrigerant after heat exchange can be converted into a low temperature by the fourth expansion valve 164 after flowing through the indoor auxiliary heat exchanger 15, further passes through the outdoor main heat exchanger 13 and the outdoor sub heat exchanger 14, and absorbs heat of the outdoor air.
According to an embodiment of the present invention, the outdoor secondary heat exchanger 14 is configured as a plate heat exchanger 34, the plate heat exchanger 34 may include a mounting box 344, a mounting cover 343, two sets of inlet and outlet pipe joints, a plurality of sets of sealing rubbers 342 and heat exchange plates 341, a receiving cavity is provided in the mounting box 344, the plurality of sets of sealing rubbers 342 and the plurality of sets of heat exchange plates 341 are alternately arranged in the receiving cavity to form a supply cavity and a heat exchange cavity, the mounting cover 343 covers an open opening of the receiving cavity in the mounting box 344,
a supply end inlet and a supply end outlet are arranged on the mounting cover 343, the supply end inlet and the supply end outlet communicate a supply cavity with a heat exchange loop, a refrigerant can flow in the wrapping range of the sealing rubber 342 and the heat exchange plate 341 and returns to the outdoor main heat exchanger 13 and the outdoor auxiliary heat exchanger 14 after flowing to the lower end outlet, the plate heat exchanger 34 is also provided with a heat exchange inlet and a heat exchange outlet, the heat exchange inlet and the heat exchange outlet are respectively communicated with the heat exchange cavity, the heat exchange cavity exchanges heat with the refrigerant in the supply cavity and stores heat or condensation, so that cold or heat is released after the air conditioner sub-machine 3 moves to other positions.
It should be noted that an individual submachine flow path is provided inside the submachine 3 of the air conditioner, and the submachine flow path includes a heat exchange cavity which can exchange heat with a refrigerant in a heat exchange loop of the air conditioner. After flowing in the wrapping range of the sealing rubber 342 and the heat exchange plate 341, the refrigerant returns to the submachine for cold and heat storage, and because the sealing spaces of the two are mutually isolated and alternately appear and the diversion holes are arranged between each level for communicating, a supply flow path and a heat exchange flow path alternately appear in the whole heat exchange plate 341 group for sufficient heat exchange.
According to an embodiment of the present invention, a cold storage water tank 32 and a centrifugal fan 31 are disposed in the sub-air conditioner 3, the centrifugal fan 31 and the cold storage water tank 32 are disposed opposite to each other, the cold storage water tank 32 may be communicated with a heat exchange cavity in the plate heat exchanger 34, and a coolant may be stored in the cold storage water tank 32 for storing cold energy, so as to cool or heat other indoor locations after the sub-air conditioner 3 is separated from the heat exchange loop. The air conditioner sub-machine 3 is also internally provided with a sub-machine water pump, the secondary refrigerant of the internal cold accumulation water tank 32 is driven by the sub-machine water pump to circulate in the plate heat exchanger 34, so that cold accumulation or heat accumulation is carried out on the secondary refrigerant in the water tank, and when the sub-machine is separated and navigated, the sub-machine can be moved to refrigerate or heat through internal flow path circulation and fan driving.
According to an embodiment of the invention, the air conditioner further comprises an air conditioner main unit 2, a sub unit accommodating cavity 21 capable of selectively accommodating the sub unit 3 of the air conditioner is arranged in the air conditioner main unit 2, a first joint 331 and a second joint 332 are arranged in the sub unit accommodating cavity 21, the first joint 331 can be selectively communicated with an inlet of the indoor main heat exchanger 12, the second joint 332 can be selectively communicated with an outlet of the indoor main heat exchanger 12, the first joint 331 can be communicated with a heat exchange inlet, the second joint 332 can be communicated with a heat exchange outlet, and by arranging the first joint 331 and the second joint 332, connection between a sub unit flow path in the sub unit 3 of the air conditioner and a heat exchange loop is realized, so that after the sub unit returns to the sub unit accommodating cavity 21, the sub unit loop and the heat exchange loop are connected by the first joint 331 and the second joint 332, and cold and heat storage of the coolant in the water tank 32 are facilitated.
According to an embodiment of the invention, a charging pile 35 is further arranged in the sub-machine accommodating cavity 21, and the charging pile is suitable for charging the sub-machine when the air conditioner sub-machine 3 returns to the sub-machine accommodating cavity 21.
As shown in fig. 1, a cooling circuit in an air conditioner according to the present invention will be described below according to an embodiment of the present invention.
The compressor 11 has a compressor inlet 111 and a compressor outlet 112, the compressor outlet 112 is respectively communicated with a first port 171 of the first direction valve and a fourth port 181 of the second direction valve, the compressor inlet 111 is communicated with a low-pressure liquid storage tank 191, a second port 172 of the first direction valve 17 is communicated with an outdoor auxiliary heat exchanger inlet 141, the outdoor auxiliary heat exchanger outlet 142 is communicated with a first expansion valve 161, an outlet of the first expansion valve 161 is respectively communicated with an outdoor main heat exchanger outlet 132 and a second expansion valve 162, the outdoor main heat exchanger inlet 131 is communicated with a fifth port 182 of the second direction valve 18, the other end of the second expansion valve 162 is communicated with a high-pressure liquid storage tank 192, the high-pressure liquid storage tank 191 is respectively communicated with a third expansion valve 163 and a fourth expansion valve 164, the indoor main heat exchanger inlet 121 is communicated 163 with the third expansion valve, the indoor auxiliary heat exchanger inlet 151 is communicated with the fourth expansion valve 164, the indoor main heat exchanger outlet 122 is communicated with a seventh port 184 of the second direction valve 18, the outlet 152 of the indoor auxiliary heat exchanger is communicated with a seventh valve port 184 of the second reversing valve 8, a sixth valve port 183 of the second reversing valve 18 is communicated with a low-pressure liquid storage tank 191, a third valve port 173 of the first reversing valve 17 is communicated with the low-pressure liquid storage tank 191, and a one-way valve 101 is arranged between the third valve port 173 and the low-pressure liquid storage tank 191.
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 device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
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 (12)
1. An air conditioner, comprising:
a compressor having a compressor inlet and a compressor outlet;
an indoor main heat exchanger having an outlet in selective communication with one of the compressor inlet and the compressor outlet;
an outdoor main heat exchanger having an outlet in selective communication with the other of the compressor inlet and the compressor outlet;
the air conditioner sub machine is movably arranged and is provided with an indoor auxiliary heat exchanger, and the indoor auxiliary heat exchanger is selectively connected with or separated from the indoor main heat exchanger in parallel;
the outdoor auxiliary heat exchanger is suitable for selectively communicating an outlet of the outdoor auxiliary heat exchanger with the other of the inlet of the compressor and the outlet of the compressor when the indoor auxiliary heat exchanger is connected with the indoor main heat exchanger in parallel, so that the flow direction of a refrigerant in the outdoor auxiliary heat exchanger is the same as that of the refrigerant in the outdoor main heat exchanger;
the outdoor auxiliary heat exchanger is suitable for selectively communicating the outlet of the outdoor auxiliary heat exchanger with one of the inlet of the compressor and the outlet of the compressor when the indoor auxiliary heat exchanger is separated from the indoor main heat exchanger, so that the flow direction of the refrigerant in the outdoor auxiliary heat exchanger is opposite to the flow direction of the refrigerant in the outdoor main heat exchanger.
2. The air conditioner as claimed in claim 1, wherein an outlet end of the outdoor secondary heat exchanger is provided with a first expansion valve.
3. The air conditioner according to claim 1, further comprising:
the first reversing valve is provided with a first valve port, a second valve port and a third valve port which can be selectively communicated with each other, the first valve port is communicated with an outlet of the compressor, the second valve port is communicated with an inlet of the outdoor auxiliary heat exchanger, and the third valve port is communicated with the inlet of the compressor.
4. The air conditioner of claim 3, wherein a one-way valve is disposed between the third valve port and an inlet of the compressor.
5. The air conditioner according to claim 3 or 4, further comprising:
the second reversing valve is provided with fourth to seventh valve ports which can be selectively communicated with each other, the fourth valve port is communicated with the outlet of the compressor, the fifth valve port is communicated with the inlet of the outdoor main heat exchanger, the sixth valve port is communicated with the inlet of the compressor, and the seventh valve port is communicated with the indoor main heat exchanger.
6. The air conditioner according to claim 5, further comprising: and the low-pressure liquid storage tank is arranged between the check valve and the inlet of the compressor and/or between the sixth valve port and the inlet of the compressor.
7. The air conditioner according to claim 1, further comprising: and the high-pressure liquid storage tank is arranged between the indoor main heat exchanger and the outdoor main heat exchanger and/or the outdoor auxiliary heat exchanger.
8. The air conditioner of claim 7, wherein a second expansion valve is disposed between said high pressure reservoir and said outdoor main heat exchanger.
9. The air conditioner according to claim 1, further comprising: and the third expansion valve is arranged between the inlet of the indoor main heat exchanger and the outlet of the outdoor main heat exchanger.
10. The air conditioner according to claim 1, further comprising: and the fourth expansion valve is arranged on the air conditioner sub machine and is connected with the indoor auxiliary heat exchanger in series.
11. An air conditioner according to any one of claims 1 to 10, wherein the outdoor secondary heat exchanger is configured as a plate heat exchanger.
12. The air conditioner according to any one of claims 1 to 11, further comprising:
the air conditioner main unit is internally provided with a sub unit accommodating cabin which can selectively accommodate the sub unit of the air conditioner, a first joint and a second joint are arranged in the sub unit accommodating cabin, the first joint is selectively communicated with an inlet of the indoor main heat exchanger, and the second joint is selectively communicated with an outlet of the indoor main heat exchanger.
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| CN202111145394.6A CN113757792B (en) | 2021-09-28 | 2021-09-28 | Air conditioner |
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| CN202111145394.6A CN113757792B (en) | 2021-09-28 | 2021-09-28 | Air conditioner |
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| CN113757792B CN113757792B (en) | 2022-08-26 |
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