CN109724184B - Air conditioning system and air conditioner - Google Patents
Air conditioning system and air conditioner Download PDFInfo
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- CN109724184B CN109724184B CN201711034636.8A CN201711034636A CN109724184B CN 109724184 B CN109724184 B CN 109724184B CN 201711034636 A CN201711034636 A CN 201711034636A CN 109724184 B CN109724184 B CN 109724184B
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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
Abstract
The invention discloses an air conditioning system and an air conditioner, wherein the air conditioning system comprises: the reversing unit is provided with a first interface, a second interface, a third interface and a fourth interface; the compressor is provided with an air suction port and an air exhaust port, the air exhaust port is connected with the first interface, and the air suction port is connected with the third interface; one end of the first heat exchanger is connected with the second interface; the second heat exchanger and the water tank are connected with one end of the second heat exchanger and the second connector, and the second heat exchanger is arranged in the water tank; the phase-change heat storage heat exchanger is connected with the fourth interface at one end, the other end of the phase-change heat storage heat exchanger is connected with the other end of the first heat exchanger through the first throttling element, and the other end of the phase-change heat storage heat exchanger is connected with the other end of the second heat exchanger through the second throttling element. The air conditioning system provided by the embodiment of the invention does not need to absorb heat from the environment during heating, can be used for preparing hot water, improves the energy utilization rate, and is more energy-saving and environment-friendly.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioning system and an air conditioner with the same.
Background
An air conditioner generally adopts a split type structure including an indoor unit and an outdoor unit, occupies a certain indoor and outdoor space, and is not attractive. Meanwhile, the air conditioner in the related art provides cold or heat for the whole indoor space, and consumes a large amount of energy.
Disclosure of Invention
The invention provides an air conditioning system.
An air conditioning system according to an embodiment of the present invention includes: the reversing unit is provided with a first interface, a second interface, a third interface and a fourth interface; the compressor is provided with an air suction port and an air discharge port, the air discharge port is connected with the first interface, and the air suction port is connected with the third interface; one end of the first heat exchanger is connected with the second interface; the second heat exchanger and the water tank are connected with one end of the second heat exchanger and the second interface, and are arranged in the water tank; the phase-change heat storage heat exchanger, the one end of phase-change heat storage heat exchanger with the fourth interface links to each other, the other end of phase-change heat storage heat exchanger with link to each other through first throttling element between the other end of first heat exchanger, the other end of phase-change heat storage heat exchanger with link to each other through the second throttling element between the other end of second heat exchanger.
According to the air conditioning system provided by the embodiment of the invention, the phase-change heat storage heat exchanger is utilized, heat is not required to be released to the environment during refrigeration, heat is not required to be absorbed from the environment during heating, the energy storage characteristic of the phase-change material can be fully utilized to prepare hot water, the energy utilization rate is improved, and the air conditioning system is more energy-saving and environment-friendly.
An air conditioning system according to one embodiment of the present invention includes a first heat exchange branch and a second heat exchange branch connected in parallel between the other end of the phase change heat storage heat exchanger and the second interface; the first heat exchange branch comprises a first stop valve, the first heat exchanger and the first throttling element which are connected in series; the second heat exchange branch comprises a second stop valve, the second heat exchanger and the second throttling element which are connected in series.
According to the air conditioning system of one embodiment of the present invention, the first stop valve is connected between one end of the first heat exchanger and the second interface, and the second stop valve is connected between one end of the second heat exchanger and the second interface.
According to an embodiment of the air conditioning system, the first heat exchange branch further comprises a first one-way valve connected in series with the first throttling element, so that the first heat exchange branch is conducted unidirectionally from the other end of the phase change heat storage heat exchanger to the second interface; the second heat exchange branch also comprises a second one-way valve connected in series with the second throttling element, so that the second heat exchange branch is conducted unidirectionally from the second interface to the other end of the phase-change heat storage heat exchanger.
According to an air conditioning system of an embodiment of the present invention, the first throttling element is connected between the first heat exchanger and the first check valve; the second check valve is connected between the second heat exchanger and the second throttling element.
According to an embodiment of the air conditioning system of the present invention, the first heat exchange branch further includes a first dry filter connected in series on the branch, and the second heat exchange branch further includes a second dry filter connected in series on the branch.
According to an embodiment of the air conditioning system of the present invention, the first dry filter is connected between the first check valve and the first throttling element; the second filter drier is connected between the second check valve and the second throttling element.
According to the air conditioning system of one embodiment of the present invention, the first heat exchange branch includes a first throttling branch and a third throttling branch connected in parallel, the first throttling branch includes the first check valve and the first throttling element connected in series, the third throttling branch includes a third check valve and a third throttling element connected in series, and the third throttling branch is unidirectional conducted from the other end of the first heat exchanger to the other end of the phase change heat storage heat exchanger.
According to an air conditioning system of an embodiment of the present invention, the third check valve is connected between the first heat exchanger and the third throttling element.
According to an embodiment of the air conditioning system, the third throttling branch further comprises a third dry filter, and the third throttling element, the third dry filter and the third check valve are sequentially connected in series.
An air conditioning system according to an embodiment of the present invention further includes: and two ends of the third stop valve are respectively connected with the other end of the first heat exchanger and the other end of the second heat exchanger.
According to an air conditioning system of one embodiment of the present invention, the water tank is used for supplying hot water.
The invention also provides an air conditioner, which comprises: an air conditioning system as described in any of the above; the air conditioning system is arranged in the box body.
The air conditioning system has the same advantages as the air conditioner described above with respect to the prior art, and will not be described in detail herein.
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 foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 to 3 are schematic structural views of an air conditioning system according to an embodiment of the present invention.
Reference numerals:
a phase change heat storage heat exchanger 1, a compressor 2, an air suction port 21, an air discharge port 22, a first heat exchanger 31, a second heat exchanger 32, a water tank 33,
the commutation unit 4, the first interface 41, the second interface 42, the third interface 43, the fourth interface 44,
a first check valve 61, a first dry filter 62, a first throttle element 63, a second check valve 64, a second dry filter 65, a second throttle element 66, a third check valve 67, a third dry filter 68, a third throttle element 69, a first shut-off valve 71, a second shut-off valve 72, and a third shut-off valve 73.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
An air conditioner according to an embodiment of the present invention, which may be used in an indoor environment such as a kitchen, a bedroom, etc., is described below with reference to fig. 1 to 3.
An air conditioner according to an embodiment of the present invention includes a cabinet and an air conditioning system.
Wherein, the box body is provided with an air supply outlet and an air return outlet. The air conditioning system is arranged in the box body and is used for realizing the circulating refrigeration function of the air conditioner.
An air conditioning system according to an embodiment of the present invention will be described first with reference to fig. 1 to 3.
As shown in fig. 1 to 3, an air conditioning system according to an embodiment of the present invention includes: the reversing unit 4, the compressor 2, the first heat exchanger 31, the first throttling element 63 and the phase-change heat storage heat exchanger 1 are all arranged in the box body, the refrigerating system pipeline is laid in the box body, the second heat exchanger 32, the second throttling element 66 and the water tank 33 can be arranged in the box body, and therefore the whole air conditioning system is integrated in the box body again, and the integration level is high. Of course, the second heat exchanger 32, the second throttling element 66 and the water tank 33 may also be arranged outside the tank, for example, the air conditioning system is installed in two tanks to adapt to the indoor space arrangement.
The compressor 2, the phase-change heat storage heat exchanger 1, the first throttling element 63 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 first throttling element 63 and the first heat exchanger 31 can be communicated through copper pipes; the compressor 2, the phase-change heat storage heat exchanger 1, the second throttling element 66 and the second heat exchanger 32 are connected to form another circulation loop of the refrigerant, and the compressor 2, the phase-change heat storage heat exchanger 1, the second throttling element 66 and the second heat exchanger 32 can be communicated through copper pipes.
The first heat exchanger 31 is arranged between the air supply outlet and the air return inlet, and in the working process, air enters and exits the box body through the air return inlet and the air supply outlet and exchanges heat with the first heat exchanger 31 so as to realize indoor air temperature adjustment. For example, the first heat exchanger 31 may be an air-cooled heat exchanger, where a fan of the air-cooled heat exchanger pumps outside air into the box and exchanges heat with the refrigerant in the first heat exchanger 31, and then blows the air into the room from the air supply port.
The compressor 2 has a discharge port 22 and a suction port 21, and the refrigerant after heat exchange can enter the compressor 2 through the suction port 21, and can be discharged through the discharge port 22 after being compressed by the compressor 2, and it is noted that the construction and operation principle of the compressor 2 are well known to those skilled in the art, and will not be described in detail herein.
The reversing unit 4 includes a first interface 41, a second interface 42, a third interface 43, and a fourth interface 44, the exhaust port 22 is connected to the first interface 41, the intake port 21 is connected to the third interface 43, one end (e.g., the upper end in fig. 1-3) of the phase-change heat storage heat exchanger 1 is connected to the fourth interface 44, one end (e.g., the left end in fig. 1-3) of the first heat exchanger 31 is connected to the second interface 42, the other end (e.g., the lower end in fig. 1-3) of the phase-change heat storage heat exchanger 1 is connected to the other end (e.g., the right end in fig. 1-3) of the first heat exchanger 31 through a first throttling element 63, one end (e.g., the left end in fig. 1-3) of the second heat exchanger 32 is connected to the second interface 42, and the other end (e.g., the right end in fig. 1-3) of the phase-change heat storage heat exchanger 1 is connected to the other end (e.g., the right end in fig. 1-3) of the second heat exchanger 32 through a second throttling element 66.
Wherein the first interface 41 may be in commutating communication with one of the second interface 42 and the fourth interface 44, and the third interface 43 may be in commutating communication with the other of the second interface 42 and the fourth interface 44. For example, when the first interface 41 communicates with the second interface 42, the third interface 43 communicates with the fourth interface 44; when the first port 41 communicates with the fourth port 44, the third port 43 communicates with the second port 42. Thereby, the air conditioning system 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.
After the refrigerant enters the phase-change heat storage heat exchanger 1, the refrigerant can exchange heat with the phase-change medium in the phase-change heat storage heat exchanger 1, heat is stored and released through the change of the phase state of the refrigerant after heat absorption or heat release of the phase-change medium, and the refrigerant does not need to exchange heat with the environment after heat exchange in the phase-change heat storage heat exchanger 1, so that the air conditioner does not need to release heat to the environment during refrigeration and absorb heat from the environment during heating, an integrated structure of the air conditioner can be realized, and the conventional split structure of the traditional air conditioner is broken.
When the refrigerant flows through the first heat exchanger 31, the refrigerant exchanges heat with air, so that the purpose of refrigeration or heating is achieved.
The second heat exchanger 32 is installed in the water tank 33, and the second heat exchanger 32 and the water tank 33 may form a water-cooled heat exchanger, and heat exchange with water is performed when the refrigerant flows through the second heat exchanger 32, so that the water tank 33 may supply hot water. Preferably, the water tank 33 is used for supplying hot water, for example, the water tank 33 may be provided with a water inlet from which cold water flows in after heat exchange with a refrigerant and a water outlet from which the hot water produced may be used for washing dishes, bathing, heating, etc. The water pipe design of the mating water tank 33 is more suitable for kitchen ceiling type or embedded type air conditioning structure.
A refrigerant circulation circuit of the air conditioning system is described below with reference to fig. 1.
Specifically, when the air conditioning system operates to cool, the heat exchange branch where the first heat exchanger 31 is located is communicated, the heat exchange branch where the second heat exchanger 32 is located is disconnected, the first interface 41 of the reversing unit 4 is communicated with the fourth interface 44, and the third interface 43 is communicated with the second interface 42. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41, the fourth port 44, the phase change heat storage heat exchanger 1, the first throttling element 63, the first heat exchanger 31, the second port 42 and the third port 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 circulates in this way. The first heat exchanger 31 is now an evaporator and the phase change heat storage heat exchanger 1 is a condenser. When the refrigerant flows through the phase-change heat storage heat exchanger 1, heat exchange is carried out between the refrigerant and the phase-change medium, heat emitted by the refrigerant is absorbed and stored by the phase-change medium, and the state of the phase-change medium changes, for example, the phase-change medium can be changed from a solid state to a liquid state. When the refrigerant flows through the first heat exchanger 31, the refrigerant exchanges heat with air and absorbs heat in the air, so that the purpose of refrigeration is achieved.
In the process of operating and refrigerating the air conditioner, the phase change medium absorbs and stores condensation heat, and the state of the phase change medium is changed from solid state to liquid state. When the phase-change medium is completely converted into a liquid state, the heat storage capacity of the phase-change medium reaches the upper limit, at the moment, the air conditioner cannot continue to refrigerate, and the air conditioner needs to start the first regeneration process to recover the heat storage capacity of the phase-change medium, and of course, when the phase-change medium is not completely converted into the liquid state, if cooking is finished, the first regeneration process can also be started, so that the heat storage capacity of the phase-change heat storage heat exchanger 1 reaches the maximum. The process is similar to battery charging, and the phase change medium can be completely converted from liquid state to solid state in a short time, and the heat storage capacity is restored again, so that the air conditioner can continue refrigerating.
The first regeneration process of the phase change medium is implemented in such a way that after the refrigeration cycle of the air conditioner is stopped, the first reheating cycle of the air conditioner is started, the heat exchange branch where the first heat exchanger 31 is located is disconnected, the heat exchange branch where the second heat exchanger 32 is located is communicated, the flow direction of the refrigerant can be switched through the reversing unit 4, the first interface 41 of the reversing 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, the second interface 42, the second heat exchanger 32, the second throttling element 66, 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 air suction port 21 of the compressor 2, and circulates in this way. The phase change heat storage heat exchanger 1 is now an evaporator and the second heat exchanger 32 is a condenser. When flowing through the phase-change heat storage heat exchanger 1, the refrigerant exchanges heat with the phase-change medium, absorbs heat stored in the phase-change medium, and changes the state of the phase-change medium, for example, from a liquid state to a solid state. When the refrigerant flows through the second heat exchanger 32, heat exchange is performed with water in the water tank 33, and heat is released into the water, so that the purpose of preparing hot water is achieved. Therefore, the energy storage characteristic of the phase change material can be fully utilized, the energy utilization rate is improved, and the energy is saved and the environment is protected.
It should be noted that the air conditioning system is more suitable for preparing hot water under summer working conditions and is more suitable for independent kitchens. Because the independent kitchen is relatively closed, the indoor temperature in winter can basically meet the human body demand, so that an air-conditioning heating system in winter can be omitted.
According to the air conditioning system provided by the embodiment of the invention, the phase-change heat storage heat exchanger 1 is utilized, heat is not required to be released to the environment during refrigeration, heat is not required to be absorbed from the environment during heating, the energy storage characteristic of the phase-change material can be fully utilized to prepare hot water, the energy utilization rate is improved, and the air conditioning system is more energy-saving and environment-friendly.
According to the air conditioner disclosed by the embodiment of the invention, heat is not required to be released to the environment during refrigeration, the integrated design is realized, heat is not required to be absorbed from the environment during heating, hot water can be prepared after refrigeration, and the energy efficiency is high.
As shown in fig. 1, the air conditioning system according to a preferred embodiment of the present invention includes a first heat exchange branch and a second heat exchange branch, which are connected in parallel between the other end of the phase change heat storage heat exchanger 1 and the second interface 42, where the second heat exchange branch is disconnected when the first heat exchange branch is connected, and the first heat exchange branch is disconnected when the second heat exchange branch is connected.
As shown in fig. 1, the first heat exchange branch includes a first shut-off valve 71, a first heat exchanger 31, a first throttling element 63, a first check valve 61, a first dry filter 62, the first shut-off valve 71, the first heat exchanger 31, the first throttling element 63, the first check valve 61 are connected in series, the first shut-off valve 71 is connected between one end of the first heat exchanger 31 and the second interface 42, the first check valve 61 is connected in series with the first throttling element 63 so that the first heat exchange branch is conducted unidirectionally from the other end of the phase change heat storage heat exchanger 1 to the second interface 42, the first throttling element 63 is connected between the first heat exchanger 31 and the first check valve 61, the first heat exchange branch further includes a first dry filter 62 connected in series on the branch, and the first dry filter 62 is connected between the first check valve 61 and the first throttling element 63.
Specifically, in the first heat exchange branch, the first stop valve 71, the first heat exchanger 31, the first throttling element 63, the first dry filter 62, and the first check valve 61 are sequentially connected in series, the first stop valve 71 is connected to the second port 42, the first check valve 61 is connected to the other end (e.g., the lower end in fig. 1-3) of the phase change heat storage heat exchanger 1, and when the first stop valve 71 is opened, the first heat exchange branch is communicated to the entire refrigeration cycle, the first dry filter 62 is used for absorbing moisture in the refrigerant, and the first check valve 61 makes the refrigerant conduct unidirectionally from the other end of the phase change heat storage heat exchanger 1 to the first dry filter 62.
As shown in fig. 1, the second heat exchange branch includes a second stop valve 72, a second heat exchanger 32, a second throttling element 66, a second check valve 64, and a second dry filter 65, the second stop valve 72, the second heat exchanger 32, the second throttling element 66, and the second check valve 64 are connected in series, the second stop valve 72 is connected between one end of the second heat exchanger 32 and the second interface 42, the second check valve 64 is connected in series with the second throttling element 66, so that the second heat exchange branch is conducted unidirectionally from the second interface 42 to the other end of the phase change heat storage heat exchanger 1, the second check valve 64 is connected between the second heat exchanger 32 and the second throttling element 66, the second heat exchange branch further includes the second dry filter 65 connected in series on the branch, and the second dry filter 65 is connected between the second check valve 64 and the second throttling element 66.
Specifically, in the second heat exchange branch, the second stop valve 72, the second heat exchanger 32, the second check valve 64, the second dry filter 65, and the second throttling element 66 are sequentially connected in series, the second stop valve 72 is connected to the second port 42, the second throttling element 66 is connected to the other end (e.g., the lower end in fig. 1-3) of the phase change heat storage heat exchanger 1, and when the second stop valve 72 is opened, the second heat exchange branch is communicated to the whole refrigeration cycle, the second dry filter 65 is used for absorbing moisture in the refrigerant, and the second check valve 64 enables the refrigerant to be conducted unidirectionally from the second heat exchanger 32 to the second dry filter 65.
Alternatively, the first and second throttling elements 63 and 66 may be capillary tubes, thermal expansion valves, electronic expansion valves, or the like. The first and second shut-off valves 71 and 72 may be solenoid valves, ball valves, or the like.
When the air conditioning system operates for refrigeration, the first stop valve 71 is opened, the second stop valve 72 is cut off, the first heat exchange branch is communicated, the first port 41 of the reversing unit 4 is communicated with the fourth port 44, and the third port 43 is communicated with the second port 42. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41 and the fourth port 44 of the reversing unit 4, the phase change heat storage heat exchanger 1, the first check valve 61, the first dry filter 62, the first throttling element 63, the first heat exchanger 31, the first stop valve 71, the second port 42 and the third port 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 circulates in this way. Wherein the refrigerant flows through the first heat exchanger 31 to exchange heat with air to realize refrigeration.
After the cooling is finished, the first reheating cycle of the air conditioner is started, the first stop valve 71 is cut off, the second stop valve 72 is opened, the second heat exchange branch is communicated, the first port 41 of the reversing unit 4 is communicated with the second port 42, and the third port 43 is communicated with the fourth port 44. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41, the second port 42, the second stop valve 72, the second heat exchanger 32, the second check valve 64, the second dry filter 65, the second throttling element 66, the phase change heat storage heat exchanger 1, the fourth port 44 and the third port 43 of the reversing unit 4 in this order, and finally returns to the compressor 2 from the suction port 21 of the compressor 2, and circulates in this way. Wherein the refrigerant flows through the second heat exchanger 32 to exchange heat with water in the water tank 33 to produce hot water.
As shown in fig. 2, the air conditioning system according to another preferred embodiment of the present invention includes a first heat exchange branch and a second heat exchange branch, which are connected in parallel between the other end of the phase change heat storage heat exchanger 1 and the second interface 42, where the second heat exchange branch is disconnected when the first heat exchange branch is connected, and the first heat exchange branch is disconnected when the second heat exchange branch is connected.
As shown in fig. 2, the first heat exchange branch includes a first shut-off valve 71, a first heat exchanger 31, a first throttling branch and a third throttling branch, the first shut-off valve 71, the first heat exchanger 31 are connected in series, the first shut-off valve 71 is connected between one end of the first heat exchanger 31 and the second interface 42, and the first throttling branch and the third throttling branch are connected in parallel between the first heat exchanger 31 and the other end (e.g., the lower end in fig. 1-3) of the phase change heat storage heat exchanger 1.
The first throttling branch comprises a first throttling element 63, a first one-way valve 61 and a first dry filter 62, the first throttling element 63, the first one-way valve 61 and the first dry filter 62 are connected in series, the first one-way valve 61 is connected in series with the first throttling element 63, so that the first heat exchange branch is conducted unidirectionally from the other end of the phase change heat storage heat exchanger 1 to the second interface 42, the first throttling element 63 is connected between the first heat exchanger 31 and the first one-way valve 61, the first heat exchange branch further comprises the first dry filter 62 connected in series on the branch, and the first dry filter 62 is connected between the first one-way valve 61 and the first throttling element 63.
The third throttling branch comprises a third throttling element 69, a third one-way valve 67 and a third dry filter 68, the third throttling element 69, the third one-way valve 67 and the third dry filter 68 are connected in series, the third one-way valve 67 is connected in series with the third throttling element 69, the third throttling branch is conducted unidirectionally from the other end of the first heat exchanger 31 to the other end of the phase-change heat storage heat exchanger 1, the third one-way valve 67 is connected between the first heat exchanger 31 and the third throttling element 69, the third heat exchange branch further comprises the third dry filter 68 connected in series on the branch, and the third dry filter 68 is connected between the third one-way valve 67 and the third throttling element 69.
Specifically, in the first heat exchange branch, the first cutoff valve 71, the first heat exchanger 31, and the first throttling branch are sequentially connected in series, the first cutoff valve 71, the first heat exchanger 31, and the second throttling branch are sequentially connected in series, the first cutoff valve 71 is connected to the second port 42, in the first throttling branch, the first throttling element 63, the first dry filter 62, and the first check valve 61 are sequentially connected in series, the first throttling element 63 is connected to the first heat exchanger 31, the first check valve 61 is connected to the other end (e.g., the lower end in fig. 1 to 3) of the phase-change heat storage heat exchanger 1, in the third throttling branch, the third check valve 67, the third dry filter 68, and the third throttling element 69 are sequentially connected in series, the third check valve 67 is connected to the first heat exchanger 31, and the third throttling element 69 is connected to the other end (e.g., the lower end in fig. 1 to 3) of the phase-change heat storage heat exchanger 1. When the first shut-off valve 71 is opened, the first heat exchange branch is communicated to the entire refrigeration cycle, and the first drier-filter 62 or the third drier-filter 68 is used to absorb moisture in the refrigerant.
As shown in fig. 2, the second heat exchange branch includes a second stop valve 72, a second heat exchanger 32, a second throttling element 66, a second check valve 64, and a second dry filter 65, the second stop valve 72, the second heat exchanger 32, the second throttling element 66, and the second check valve 64 are connected in series, the second stop valve 72 is connected between one end of the second heat exchanger 32 and the second interface 42, the second check valve 64 is connected in series with the second throttling element 66, so that the second heat exchange branch is conducted unidirectionally from the second interface 42 to the other end of the phase change heat storage heat exchanger 1, the second check valve 64 is connected between the first heat exchanger 31 and the second throttling element 66, the second heat exchange branch further includes the second dry filter 65 connected in series on the branch, and the second dry filter 65 is connected between the second check valve 64 and the second throttling element 66.
Specifically, in the second heat exchange branch, the second stop valve 72, the second heat exchanger 32, the second check valve 64, the second dry filter 65, and the second throttling element 66 are sequentially connected in series, the second stop valve 72 is connected to the second port 42, the second throttling element 66 is connected to the other end (e.g., the lower end in fig. 1-3) of the phase change heat storage heat exchanger 1, and when the second stop valve 72 is opened, the second heat exchange branch is communicated to the whole refrigeration cycle, the second dry filter 65 is used for absorbing moisture in the refrigerant, and the second check valve 64 enables the refrigerant to be conducted unidirectionally from the second heat exchanger 32 to the second dry filter 65.
Alternatively, the first throttling element 63, the second throttling element 66, the third throttling element 69 may be a capillary tube, a thermal expansion valve, an electronic expansion valve, or the like. The first and second shut-off valves 71 and 72 may be solenoid valves, ball valves, or the like.
When the air conditioning system operates for refrigeration, the first stop valve 71 is opened, the second stop valve 72 is cut off, the first heat exchange branch is communicated, the first port 41 of the reversing unit 4 is communicated with the fourth port 44, and the third port 43 is communicated with the second port 42. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41 and the fourth port 44 of the reversing unit 4, the phase change heat storage heat exchanger 1, the first check valve 61, the first dry filter 62, the first throttling element 63, the first heat exchanger 31, the first stop valve 71, the second port 42 and the third port 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 circulates in this way. Wherein the refrigerant flows through the first heat exchanger 31 to exchange heat with air to realize refrigeration.
After the cooling is finished, the first reheating cycle of the air conditioner is started, the first stop valve 71 is cut off, the second stop valve 72 is opened, the second heat exchange branch is communicated, the first port 41 of the reversing unit 4 is communicated with the second port 42, and the third port 43 is communicated with the fourth port 44. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41, the second port 42, the second stop valve 72, the second heat exchanger 32, the second check valve 64, the second dry filter 65, the second throttling element 66, the phase change heat storage heat exchanger 1, the fourth port 44 and the third port 43 of the reversing unit 4 in this order, and finally returns to the compressor 2 from the suction port 21 of the compressor 2, and circulates in this way. Wherein the refrigerant flows through the second heat exchanger 32 to exchange heat with water in the water tank 33 to produce hot water.
When the air conditioner is operated to heat, the first stop valve 71 is opened, the second stop valve 72 is cut off, the first heat exchange branch is communicated, the first interface 41 of the reversing unit 4 is communicated with the second interface 42, and the third interface 43 is communicated with the fourth interface 44. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41, the second port 42, the first heat exchanger 31, the third check valve 67, the third dry filter 68, the third throttling element 69, the phase change heat storage heat exchanger 1, the fourth port 44 and the third port 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 circulates in this way. The phase change heat storage heat exchanger 1 is now an evaporator and the first heat exchanger 31 is a condenser. When flowing through the phase-change heat storage heat exchanger 1, the refrigerant exchanges heat with the phase-change medium, absorbs heat stored in the phase-change medium, and changes the state of the phase-change medium, for example, from a liquid state to a solid state. When the refrigerant flows through the first heat exchanger 31, heat exchange is performed with air, and heat is released into the air, so that the purpose of heating is achieved.
Also, during the operation of the air conditioner for heating, the phase change medium is changed from a liquid state to a solid state due to the heat absorbed from the phase change medium by the refrigerant. When the phase-change medium is completely converted into a solid state, the heat release capacity of the phase-change medium reaches the upper limit, at the moment, the air conditioning system component cannot continue heating, and the air conditioning system component needs to start the second regeneration process to enable the phase-change medium to recover the heat release capacity, and of course, when the phase-change medium is not completely converted into the solid state, if cooking is completed, the second regeneration process can also be started, so that the heat release capacity of the phase-change heat storage heat exchanger 1 reaches the maximum. The second regeneration process is opposite to the first regeneration process, so that the phase-change medium can be completely converted into liquid state from solid state in a short time, and the heat release capacity is restored again, and the air conditioner can continue heating. The air conditioner is realized by stopping the heating cycle of the air conditioner, starting the refrigerating cycle of the air conditioner, opening the first stop valve 71, cutting off the second stop valve 72, communicating the first heat exchange branch, communicating the first interface 41 with the fourth interface 44 of the reversing unit 4, and communicating the third interface 43 with the second interface 42. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41 and the fourth port 44 of the reversing unit 4, the phase change heat storage heat exchanger 1, the first check valve 61, the first dry filter 62, the first throttling element 63, the first heat exchanger 31, the first stop valve 71, the second port 42 and the third port 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 circulates in this way. In the process, the phase change medium absorbs and stores condensation heat, and is converted from a solid state to a liquid state, thereby recovering 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 indoor space are required to be closed, and the cold air is prevented from entering other indoor spaces. The space where the air conditioner is located and the window communicated with the outside can be opened for air circulation. Of course, when the air conditioner is a portable air conditioner, the above process can be performed outdoors to avoid the influence of the cold air blown out by the air conditioner on the indoor air state.
The air conditioning system with the structural embodiment can be used for refrigerating in summer and heating in winter, and can be used for closed kitchens and open kitchens.
As shown in fig. 3, the air conditioning system according to still another preferred embodiment of the present invention includes a first heat exchange branch, a second heat exchange branch, and a third stop valve 73, where the first heat exchange branch and the second heat exchange branch are connected in parallel between the other end of the phase change heat storage heat exchanger 1 and the second interface 42, and the second heat exchange branch is disconnected when the first heat exchange branch is connected, and the first heat exchange branch is disconnected when the second heat exchange branch is connected.
As shown in fig. 3, the first heat exchange branch includes a first shut-off valve 71, a first heat exchanger 31, a first throttling element 63, a first check valve 61, a first dry filter 62, the first shut-off valve 71, the first heat exchanger 31, the first throttling element 63, the first check valve 61 are connected in series, the first shut-off valve 71 is connected between one end of the first heat exchanger 31 and the second interface 42, the first check valve 61 is connected in series with the first throttling element 63 so that the first heat exchange branch is conducted unidirectionally from the other end of the phase change heat storage heat exchanger 1 to the second interface 42, the first throttling element 63 is connected between the first heat exchanger 31 and the first check valve 61, the first heat exchange branch further includes a first dry filter 62 connected in series on the branch, and the first dry filter 62 is connected between the first check valve 61 and the first throttling element 63.
Specifically, in the first heat exchange branch, the first stop valve 71, the first heat exchanger 31, the first throttling element 63, the first dry filter 62, and the first check valve 61 are sequentially connected in series, the first stop valve 71 is connected to the second port 42, the first check valve 61 is connected to the other end (e.g., the lower end in fig. 1-3) of the phase change heat storage heat exchanger 1, and when the first stop valve 71 is opened, the first heat exchange branch is communicated to the entire refrigeration cycle, the first dry filter 62 is used for absorbing moisture in the refrigerant, and the first check valve 61 makes the refrigerant conduct unidirectionally from the other end of the phase change heat storage heat exchanger 1 to the first dry filter 62.
As shown in fig. 3, the second heat exchange branch includes a second stop valve 72, a second heat exchanger 32, a second throttling element 66, a second check valve 64, and a second dry filter 65, the second stop valve 72, the second heat exchanger 32, the second throttling element 66, and the second check valve 64 are connected in series, the second stop valve 72 is connected between one end of the second heat exchanger 32 and the second interface 42, the second check valve 64 is connected in series with the second throttling element 66, so that the second heat exchange branch is conducted unidirectionally from the second interface 42 to the other end of the phase change heat storage heat exchanger 1, the second check valve 64 is connected between the first heat exchanger 31 and the second throttling element 66, the second heat exchange branch further includes the second dry filter 65 connected in series on the branch, and the second dry filter 65 is connected between the second check valve 64 and the second throttling element 66.
Specifically, in the second heat exchange branch, the second stop valve 72, the second heat exchanger 32, the second check valve 64, the second dry filter 65, and the second throttling element 66 are sequentially connected in series, the second stop valve 72 is connected to the second port 42, the second throttling element 66 is connected to the other end (e.g., the lower end in fig. 1-3) of the phase change heat storage heat exchanger 1, and when the second stop valve 72 is opened, the second heat exchange branch is communicated to the whole refrigeration cycle, the second dry filter 65 is used for absorbing moisture in the refrigerant, and the second check valve 64 enables the refrigerant to be conducted unidirectionally from the second heat exchanger 32 to the second dry filter 65.
Both ends of the third cutoff valve 73 are connected to the other end of the first heat exchanger 31 and the other end of the second heat exchanger 32, respectively.
Alternatively, the first and second throttling elements 63 and 66 may be capillary tubes, thermal expansion valves, electronic expansion valves, or the like. The first and second shut-off valves 71 and 72 may be solenoid valves, ball valves, or the like.
When the air conditioning system operates for refrigeration, the first stop valve 71 is opened, the second stop valve 72 is cut off, the third stop valve 73 is cut off, the first heat exchange branch is communicated, the first port 41 of the reversing unit 4 is communicated with the fourth port 44, and the third port 43 is communicated with the second port 42. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41 and the fourth port 44 of the reversing unit 4, the phase change heat storage heat exchanger 1, the first check valve 61, the first dry filter 62, the first throttling element 63, the first heat exchanger 31, the first stop valve 71, the second port 42 and the third port 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 circulates in this way. Wherein the refrigerant flows through the first heat exchanger 31 to exchange heat with air to realize refrigeration.
After the cooling is finished, the first reheating cycle of the air conditioner is started, the first stop valve 71 is cut off, the second stop valve 72 is opened, the third stop valve 73 is cut off, the second heat exchange branch is communicated, the first port 41 of the reversing unit 4 is communicated with the second port 42, and the third port 43 is communicated with the fourth port 44. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41, the second port 42, the second stop valve 72, the second heat exchanger 32, the second check valve 64, the second dry filter 65, the second throttling element 66, the phase change heat storage heat exchanger 1, the fourth port 44 and the third port 43 of the reversing unit 4 in this order, and finally returns to the compressor 2 from the suction port 21 of the compressor 2, and circulates in this way. Wherein the refrigerant flows through the second heat exchanger 32 to exchange heat with water in the water tank 33 to produce hot water.
When the air conditioner is operated to heat, the first stop valve 71 is opened, the second stop valve 72 is cut off, the third stop valve 73 is opened, the first port 41 of the reversing unit 4 is communicated with the second port 42, and the third port 43 is communicated with the fourth port 44. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41, the second port 42, the first heat exchanger 31, the third stop valve 73, the second check valve 64, the second dry filter 65, the second throttling element 66, the phase change heat storage heat exchanger 1, the fourth port 44, the third port 43 of the reversing unit 4 in this order, and finally returns to the compressor 2 from the suction port 21 of the compressor 2, thus circulating. The phase change heat storage heat exchanger 1 is now an evaporator and the first heat exchanger 31 is a condenser. When flowing through the phase-change heat storage heat exchanger 1, the refrigerant exchanges heat with the phase-change medium, absorbs heat stored in the phase-change medium, and changes the state of the phase-change medium, for example, from a liquid state to a solid state. When the refrigerant flows through the first heat exchanger 31, heat exchange is performed with air, and heat is released into the air, so that the purpose of heating is achieved.
Also, during the operation of the air conditioner for heating, the phase change medium is changed from a liquid state to a solid state due to the heat absorbed from the phase change medium by the refrigerant. When the phase-change medium is completely converted into a solid state, the heat release capacity of the phase-change medium reaches the upper limit, at the moment, the air conditioning system component cannot continue heating, and the air conditioning system component needs to start the second regeneration process to enable the phase-change medium to recover the heat release capacity, and of course, when the phase-change medium is not completely converted into the solid state, if cooking is completed, the second regeneration process can also be started, so that the heat release capacity of the phase-change heat storage heat exchanger 1 reaches the maximum. The second regeneration process is opposite to the first regeneration process, so that the phase-change medium can be completely converted into liquid state from solid state in a short time, and the heat release capacity is restored again, and the air conditioner can continue heating. The air conditioner is started by stopping the heating cycle of the air conditioner, starting the refrigerating cycle of the air conditioner, opening the first stop valve 71, cutting off the second stop valve 72, cutting off the third stop valve 73, communicating the first heat exchange branch, communicating the first interface 41 with the fourth interface 44 of the reversing unit 4, and communicating the third interface 43 with the second interface 42. The refrigerant passes through the discharge port 22 of the compressor 2, the first port 41 and the fourth port 44 of the reversing unit 4, the phase change heat storage heat exchanger 1, the first check valve 61, the first dry filter 62, the first throttling element 63, the first heat exchanger 31, the first stop valve 71, the second port 42 and the third port 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 circulates in this way. In the process, the phase change medium absorbs and stores condensation heat, and is converted from a solid state to a liquid state, thereby recovering 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 indoor space are required to be closed, and the cold air is prevented from entering other indoor spaces. The space where the air conditioner is located and the window communicated with the outside can be opened for air circulation. Of course, when the air conditioner is a portable air conditioner, the above process can be performed outdoors to avoid the influence of the cold air blown out by the air conditioner on the indoor air state.
The air conditioning system of the embodiment of the structure can be used for refrigerating in summer and heating in winter, can be used for a closed kitchen and an open kitchen, and has the advantages of less total valve elements and simpler system.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (13)
1. An air conditioning system, comprising:
the reversing unit is provided with a first interface, a second interface, a third interface and a fourth interface;
the compressor is provided with an air suction port and an air discharge port, the air discharge port is connected with the first interface, and the air suction port is connected with the third interface;
one end of the first heat exchanger is connected with the second interface;
the second heat exchanger and the water tank are connected with one end of the second heat exchanger and the second interface, and are arranged in the water tank;
one end of the phase-change heat storage heat exchanger is connected with the fourth interface, the other end of the phase-change heat storage heat exchanger is connected with the other end of the first heat exchanger through a first throttling element, and the other end of the phase-change heat storage heat exchanger is connected with the other end of the second heat exchanger through a second throttling element;
the phase-change heat storage heat exchanger is located outside the water tank.
2. The air conditioning system of claim 1, comprising a first heat exchange leg and a second heat exchange leg connected in parallel between the other end of the phase change heat storage heat exchanger and the second interface;
The first heat exchange branch comprises a first stop valve, the first heat exchanger and the first throttling element which are connected in series;
the second heat exchange branch comprises a second stop valve, the second heat exchanger and the second throttling element which are connected in series.
3. The air conditioning system of claim 2, wherein the first shut-off valve is connected between an end of the first heat exchanger and the second interface, and the second shut-off valve is connected between an end of the second heat exchanger and the second interface.
4. The air conditioning system of claim 2, wherein the first heat exchange branch further comprises a first one-way valve in series with the first throttling element to allow one-way conduction of the first heat exchange branch from the other end of the phase change heat storage heat exchanger to the second interface;
the second heat exchange branch also comprises a second one-way valve connected in series with the second throttling element, so that the second heat exchange branch is conducted unidirectionally from the second interface to the other end of the phase-change heat storage heat exchanger.
5. The air conditioning system of claim 4, wherein the first throttling element is connected between the first heat exchanger and the first check valve; the second check valve is connected between the second heat exchanger and the second throttling element.
6. The air conditioning system of claim 4, wherein the first heat exchange branch further comprises a first dry filter in series with the branch, and the second heat exchange branch further comprises a second dry filter in series with the branch.
7. The air conditioning system of claim 6, wherein the first dry filter is connected between the first check valve and the first throttling element; the second filter drier is connected between the second check valve and the second throttling element.
8. The air conditioning system of claim 4, wherein the first heat exchange branch comprises a first throttling branch and a third throttling branch connected in parallel, the first throttling branch comprising the first check valve and the first throttling element connected in series, the third throttling branch comprising a third check valve and a third throttling element connected in series, the third throttling branch being unidirectional in conduction from the other end of the first heat exchanger to the other end of the phase change heat storage heat exchanger.
9. The air conditioning system of claim 8, wherein the third check valve is connected between the first heat exchanger and the third throttling element.
10. The air conditioning system of claim 8, wherein the third throttling branch further comprises a third dry filter, the third throttling element, the third dry filter, the third check valve being serially connected in sequence.
11. The air conditioning system of claim 4, further comprising: and two ends of the third stop valve are respectively connected with the other end of the first heat exchanger and the other end of the second heat exchanger.
12. An air conditioning system according to claim 1, wherein the water tank is for supplying hot water.
13. An air conditioner, comprising:
the air conditioning system of any of claims 1-12;
the air conditioning system is arranged in the box body.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711034636.8A CN109724184B (en) | 2017-10-30 | 2017-10-30 | Air conditioning system and 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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| CN201711034636.8A CN109724184B (en) | 2017-10-30 | 2017-10-30 | Air conditioning system and air conditioner |
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| CN109724184B true CN109724184B (en) | 2023-10-03 |
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| CN202420029U (en) * | 2011-12-21 | 2012-09-05 | 天津商业大学 | Air-conditioning water heater with phase change energy storage function |
| CN103206807A (en) * | 2013-05-03 | 2013-07-17 | 广东吉荣空调有限公司 | Multi-source heat pump cold and hot water unit integrating solar energy, air energy and sleeve accumulated energy |
| CN104566649A (en) * | 2014-12-30 | 2015-04-29 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN208205216U (en) * | 2017-10-30 | 2018-12-07 | 浙江三花智能控制股份有限公司 | Air-conditioning system and air conditioner |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202420029U (en) * | 2011-12-21 | 2012-09-05 | 天津商业大学 | Air-conditioning water heater with phase change energy storage function |
| CN103206807A (en) * | 2013-05-03 | 2013-07-17 | 广东吉荣空调有限公司 | Multi-source heat pump cold and hot water unit integrating solar energy, air energy and sleeve accumulated energy |
| CN104566649A (en) * | 2014-12-30 | 2015-04-29 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN208205216U (en) * | 2017-10-30 | 2018-12-07 | 浙江三花智能控制股份有限公司 | Air-conditioning system and air conditioner |
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