CN111380108A

CN111380108A - Heat exchanger, air conditioner indoor unit and air conditioner

Info

Publication number: CN111380108A
Application number: CN202010210618.6A
Authority: CN
Inventors: 袁波
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-07-07

Abstract

The invention discloses a heat exchanger, an air conditioner indoor unit and an air conditioner, wherein the heat exchanger comprises a first port, a second port and at least two heat exchange areas which are arranged between the first port and the second port in parallel, and a first valve is arranged between at least one heat exchange area and the first port and/or the second port; the heat exchanger further comprises a pipe and a second valve arranged on the pipe, and the pipe is communicated with the two heat exchange areas. The invention aims to provide a heat exchanger capable of improving heat exchange efficiency of refrigeration and heating simultaneously, so that the capacity and energy efficiency of an indoor unit of an air conditioner and the air conditioner are improved.

Description

Heat exchanger, air conditioner indoor unit and air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to a heat exchanger, an air conditioner indoor unit using the heat exchanger and an air conditioner.

Background

The energy conservation of the air conditioner is more and more concerned, and in order to improve the energy efficiency and the efficiency of the air conditioner, a method of increasing the heat exchange area of a heat exchanger is generally adopted, so that the overall cost of the air conditioner is increased. At present, when a heat exchanger adopted by an air conditioner meets the requirement of the energy efficiency of the refrigerating or heating capacity, the energy efficiency of the heat exchanger in another operation mode is generally sacrificed, the energy efficiency of the heat exchanger is low, and the heat exchange energy efficiency of the refrigerating/heating capacity is difficult to be considered at the same time.

The above description is only for the purpose of aiding understanding of the technical solutions of the present application and does not represent an admission of prior art.

Disclosure of Invention

The invention mainly aims to provide a heat exchanger, an air conditioner indoor unit and an air conditioner, and aims to provide the heat exchanger which can improve the heat exchange energy efficiency of refrigeration and heating simultaneously, so that the capacity energy efficiency of the air conditioner indoor unit and the air conditioner is improved.

In order to achieve the above object, the heat exchanger provided by the present invention includes a first port, a second port, and at least two heat exchange areas arranged in parallel between the first port and the second port, wherein a first valve is arranged between at least one of the heat exchange areas and the first port and/or the second port;

the heat exchanger further comprises a pipe and a second valve arranged on the pipe, and the pipe is communicated with the two heat exchange areas.

In an embodiment, the heat exchanger includes three heat exchange areas, the pipe communicates with any two heat exchange areas, and the first valve is disposed between at least one of the heat exchange areas and the first port and/or the second port.

In an embodiment, the heat exchanger includes three heat exchange areas and two pipes, each pipe is provided with the second valve, each pipe is communicated with the two heat exchange areas, and the first valve is arranged between at least two heat exchange areas and the first port and/or the second port respectively.

In an embodiment, the three heat transfer areas are a first heat transfer area, a second heat transfer area and a third heat transfer area, the two pipes are a first pipe and a second pipe, the first pipe is communicated with the first heat transfer area and the second heat transfer area, the second pipe is communicated with the third heat transfer area and the second heat transfer area, the first valve is arranged between the first heat transfer area and the first port and/or the second port, and the first valve is arranged between the third heat transfer area and the first port and/or the second port.

In an embodiment, the heat exchanger further comprises a third valve disposed between the second heat transfer zone and the first port.

In an embodiment, the heat exchanger further comprises a distributor connecting the first port with at least two heat exchange zones.

In an embodiment, the heat exchanger further comprises a flow splitter connecting the second port with at least two heat exchange zones.

In one embodiment, each heat exchange area comprises a fin and a branch pipe arranged in the fin, one end of the branch pipe is connected with the first port, and the other end of the branch pipe is connected with the second port.

The invention also provides an air conditioner indoor unit, which comprises a shell and the heat exchanger, wherein the shell is provided with an installation cavity, and the heat exchanger is arranged in the installation cavity.

The invention also provides an air conditioner, which comprises an air conditioner outdoor unit and the air conditioner indoor unit, wherein the air conditioner outdoor unit is communicated with the heat exchanger of the air conditioner indoor unit through a pipeline.

According to the heat exchanger, at least two heat exchange areas and a pipe are arranged between a first port and a second port in parallel, a first valve is arranged between at least one heat exchange area and the first port and/or the second port, and a second valve is arranged on the pipe, so that a refrigerant flows in parallel in the at least two heat exchange areas of the heat exchanger in a refrigeration mode by controlling the first valve and the second valve, the pressure and the evaporation temperature of the refrigerant in each heat exchange area are effectively reduced, the heat exchange temperature difference is increased, and the heat exchange energy efficiency of the heat exchanger in the refrigeration mode is improved; by controlling the first valve and the second valve, the heat exchanger is enabled to be in series arrangement in at least two heat exchange areas of the heat exchanger by the refrigerant in the heating mode, so that the flow and the heat exchange time of the refrigerant in the heat exchange areas are effectively increased, and the heat exchange efficiency of the heat exchanger in the heating mode is improved. The heat exchanger can simultaneously improve the heat exchange energy efficiency of refrigeration and heating, thereby improving the capacity energy efficiency of an indoor unit of an air conditioner and the air conditioner.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an air conditioner in a cooling mode according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an air conditioner in a heating mode according to an embodiment of the present invention;

FIG. 3 is a schematic flow diagram of a heat exchanger according to an embodiment of the present invention;

FIG. 4 is a schematic flow diagram of a heat exchanger according to another embodiment of the present invention;

fig. 5 is a schematic view of a flow path of a heat exchanger according to still another embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Heat exchanger	131	First piping
101	First port	132	Second piping
				102	Second port	140	Second valve
103	Dispenser	150	Third valve
				104	Flow divider	200	Indoor unit of air conditioner
110	Heat transfer zone	210	Shell body
				111	Fin	220	Mounting cavity
112	Branch pipe	300	Outdoor machine of air conditioner
				113	First heat exchange zone	310	Compressor with a compressor housing having a plurality of compressor blades
114	Second heat exchange zone	320	Outdoor heat exchanger
				115	A third heat exchange zone	330	Throttle device
120	A first valve;	400	four-way valve
				130	Piping	500	Air conditioner

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a heat exchanger 100. It can be understood that the heat exchanger 100 is applied to the indoor unit 200 of the air conditioner, and the heat exchanger 100 is used for exchanging heat between the internal refrigerant and the external air, that is, the heat exchanger 100 may be a condenser or an evaporator, and is determined according to the operation state of the heat exchanger 100, and is not limited herein.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, in an embodiment of the present invention, the heat exchanger 100 includes a first port 101, a second port 102, and at least two heat exchange areas 110 disposed between the first port 101 and the second port 102 in parallel, and a first valve 120 is disposed between the at least one heat exchange area 110 and the first port 101 and/or the second port 102; the heat exchanger 100 further includes a pipe 130 and a second valve 140 provided in the pipe 130, and the pipe 130 communicates the two heat exchange areas 110.

In the present embodiment, as shown in fig. 3, the heat exchanger 100 includes fins 111 and branch pipes 112 inserted into the fins 111, the fins 111 are used for mounting and fixing the branch pipes 112, and the branch pipes 112 are used for flowing a refrigerant. The first port 101 and the second port 102 of the heat exchanger 100 are connected to both ends of a branch pipe 112 for inflow or outflow of a refrigerant.

As can be understood, the refrigerant flows into the branch pipe 112 from the first port 101 of the heat exchanger 100 and flows out from the second port 102 of the heat exchanger 100, where the first port 101 is an inlet and the second port 102 is an outlet; the refrigerant may also flow into the branch pipe 112 from the second port 102 of the heat exchanger 100 and flow out from the first port 101 of the heat exchanger 100, where the second port 102 is an inlet and the first port 101 is an outlet, and the refrigerant is determined according to the use state or the connection state of the heat exchanger 100, and is not limited herein.

In this embodiment, the heat exchanger 100 includes at least two heat exchange areas 110 arranged in parallel, that is, the heat exchanger 100 includes two, three, four, five, or six heat exchange areas 110 arranged in parallel, and at this time, the plurality of heat exchange areas 110 are arranged in parallel between the first port 101 and the second port 102, that is, one end of each of the plurality of heat exchange areas 110 is simultaneously connected to the first port 101, and the other end of each of the plurality of heat exchange areas 110 is simultaneously connected to the second port 102. It can be understood that the refrigerant flows into the plurality of heat exchange areas 110 after flowing from the first port 101 of the heat exchanger 100, and flows out of the plurality of heat exchange areas 110, and then is collected to the second port 102, and then flows out of the second port 102.

In the present embodiment, as shown in fig. 3, 4 and 5, the heat exchanger 100 further includes a pipe 130 and a second valve 140 provided in the pipe 130, and the pipe 130 communicates with the two heat transfer zones 110. It is understood that, by providing the piping 130, any two heat transfer areas 110 of the plurality of heat transfer areas 110 are communicated by the piping 130, and in this case, the two heat transfer areas 110 may be provided in series by the piping 130.

In this embodiment, the heat exchanger 100 has a cooling mode and a heating mode, and the opening and closing of the first valve 120 and the second valve 140 are controlled in the cooling mode and the heating mode, so that the plurality of heat exchange areas 110 of the heat exchanger 100 are arranged in parallel or in series according to different modes, and thus the heat exchange energy efficiency of the heat exchanger 100 in different modes is improved.

It can be understood that, when the heat exchanger 100 is in the cooling mode, the first valve 120 is controlled to be opened, the second valve 140 is controlled to be closed, and at this time, the plurality of heat exchange areas 110 of the heat exchanger 100 are arranged in parallel, that is, the refrigerant flows into the plurality of heat exchange areas 110 from the first port 101 or the second port 102 at the same time, so that the pressure and the evaporation temperature of the refrigerant in each heat exchange area 110 can be effectively reduced, thereby effectively increasing the heat exchange temperature difference between the heat exchange areas 110 and the outside air, and further improving the heat exchange energy efficiency of the heat exchanger 100 in the cooling mode. In the heating mode of the heat exchanger 100, the first valve 120 is controlled to be closed, the second valve 140 is controlled to be opened, at this time, the refrigerant flows into the plurality of heat exchange areas 110 of the heat exchanger 100 from the first port 101 or the second port 102 at the same time to form a parallel flow path, and then the refrigerant in one heat exchange area 110 is introduced into the other heat exchange area 110 through the pipe 130, so that the two heat exchange areas 110 form a series flow path, thereby effectively increasing the flow and the heat exchange time of the refrigerant in the heat exchange area 110, and improving the heat exchange efficiency of the heat exchanger 100 in the heating mode.

In the present embodiment, when one pipe 130 is provided in the heat exchanger 100, the heat exchanger 100 is in the heating mode, and two heat transfer zones 110 can be provided in series via the pipe 130. Of course, the heat exchanger 100 may be provided with a plurality of pipes 130, and in the heating mode of the heat exchanger 100, two heat transfer areas 110 in the plurality of heat transfer areas 110 are arranged in series by using each pipe 130, in which case, two heat transfer areas 110 in series in one pipe 130 are different from two heat transfer areas 110 in series in another pipe 130, that is, two heat transfer areas 110 in series in one pipe 130 are arranged in parallel with two heat transfer areas 110 in series in another pipe 130. Of course, two heat transfer areas 110 in series connected with one pipe 130 in the plurality of pipes 130 are the same as one heat transfer area 110 in two heat transfer areas 110 in series connected with the other pipe 130, that is, one end of each of the two pipes 130 is simultaneously communicated with the same heat transfer area 110, and the other end of each of the two pipes 130 is communicated with two different heat transfer areas 110, at this time, the same heat transfer area 110 in simultaneous communication with one end of each of the two pipes 130 is in series connection with two different heat transfer areas 110 in communication with the other end of each of the two pipes 130, and the two different heat transfer areas 110 in communication with the other end of each of the.

According to the heat exchanger 100, at least two heat exchange areas 110 and a pipe 130 which are arranged in parallel are arranged between a first port 101 and a second port 102, a first valve 120 is arranged between at least one heat exchange area 110 and the first port 101 and/or the second port 102, and a second valve 140 is arranged on the pipe 130, so that under a refrigeration mode of the heat exchanger 100, a refrigerant flows in parallel in at least two heat exchange areas 110 of the heat exchanger 100 by controlling the first valve 120 and the second valve 140, the pressure and the evaporation temperature of the refrigerant in each heat exchange area 110 are effectively reduced, the heat exchange temperature difference is increased, and the heat exchange energy efficiency of the heat exchanger 100 under the refrigeration mode is improved; by controlling the first valve 120 and the second valve 140, at least two heat exchange areas 110 of the heat exchanger 100 in the heat exchange areas 110 are arranged in series in the heat exchanger 100 in the heating mode, so that the flow and the heat exchange time of the refrigerant in the heat exchange areas 110 are effectively increased, and the heat exchange energy efficiency of the heat exchanger 110 in the heating mode is improved. The heat exchanger 100 of the invention can improve the heat exchange energy efficiency of refrigeration and heating at the same time, thereby improving the energy efficiency of the indoor unit 200 of the air conditioner and the air conditioner 500.

In the present embodiment, as shown in fig. 3, a first valve 120 may be disposed between the heat exchange region 110 and the first port 101. As shown in fig. 4 and 5, a first valve 120 may also be disposed between the heat transfer zone 110 and the second port 102. Of course, in other embodiments, the first valve 120 may be disposed between the heat exchange region 110 and the first port 101 and between the heat exchange region 110 and the second port 102 at the same time, and specifically, the opening or closing of the first valve 120 is controlled according to different modes of the heat exchanger 100, so that the heat exchanger 100 is in parallel with the plurality of heat exchange regions 110 in the cooling mode, and the heat exchanger 100 is in the heating mode, and at least two heat exchange regions 110 in the plurality of heat exchange regions 110 are in series.

In one embodiment, as shown in fig. 3 and 5, the heat exchanger 100 includes three heat exchange areas 110, the pipe 130 communicates with any two heat exchange areas 110, and the first valve 120 is disposed between at least one heat exchange area 110 of any two heat exchange areas 110 and the first port 101 and/or the second port 102.

It can be understood that the heat exchanger 100 is composed of a whole fin 111 and a plurality of branch pipes 112 penetrating the inner cavity of the fin 111, that is, the heat exchanger 100 is an integral structure, and the plurality of branch pipes 112 are arranged in parallel in the inner cavity of the fin 111, thereby forming a plurality of heat transfer areas 110. Of course, the heat exchanger 100 may also be composed of a plurality of fins 111 and one or more branch pipes 112 penetrating each fin 111, that is, each fin 111 and the branch pipe 112 penetrating each fin 111 constitute one heat exchange area 110 of the heat exchanger 100, which is not limited herein.

In this embodiment, three heat transfer areas 110 are disposed on the heat exchanger 100, that is, the three heat transfer areas 110 are located at the upper part, the middle part and the lower part of the heat exchanger 100, so that the heat exchanger 100 can be provided with only one pipe 130, the pipe 130 is provided with a second valve 140, the pipe 130 communicates with any two heat transfer areas 110, and at this time, a first valve 120 is disposed between at least one heat transfer area 110 of the two heat transfer areas 110 connected to the pipe 130 and the first port 101 and/or the second port 102.

It can be understood that a first valve 120 is disposed between one heat exchange region 110 of the two heat exchange regions 110 connected to the pipe 130 and the first port 101 and/or the second port 102, that is, the first valve 120 is disposed between the heat exchange region 110 and the first port 101; alternatively, a first valve 120 is disposed between the heat exchange area 110 and the second port 102; alternatively, the first valve 120 is disposed between the heat exchange area 110 and the first port 101 and between the second port 102, which is not limited herein.

Of course, in other embodiments, the first valve 120 is disposed between the two heat exchange areas 110 connected to the pipe 130 and the first port 101 and/or the second port 102, that is, the first valve 120 is disposed between the two heat exchange areas 110 and the first port 101; or, a first valve 120 is disposed between both heat transfer areas 110 and the second port 102; alternatively, the first valve 120 is disposed between the two heat exchange areas 110 and the first port 101 and between the two second ports 102, which is not limited herein.

In one embodiment, as shown in fig. 3 and 5, the heat exchanger 100 includes three heat exchange areas 110 and two pipes 130, each pipe 130 is provided with a second valve 140, each pipe 130 communicates with two heat exchange areas 110, and a first valve 120 is disposed between at least two heat exchange areas 110 and the first port 101 and/or the second port 102, respectively.

It can be understood that the three heat exchange areas 110 of the heat exchanger 100 are connected in pairs by two pipes 130, that is, each pipe 130 communicates with two heat exchange areas 110. Alternatively, at least one end of the two pipes 130 is connected to two different heat transfer zones 110.

In this embodiment, as shown in fig. 3 and fig. 5, the three heat transfer areas 110 are a first heat transfer area 113, a second heat transfer area 114 and a third heat transfer area 115, the two pipes 130 are a first pipe 131 and a second pipe 132, the first pipe 131 is communicated with the first heat transfer area 113 and the second heat transfer area 114, the second pipe 132 is communicated with the third heat transfer area 115 and the second heat transfer area 114, a first valve 120 is disposed between the first heat transfer area 113 and the first port 101 and/or the second port 102, and a first valve 120 is disposed between the third heat transfer area 115 and the first port 101 and/or the second port 102.

It is understood that one ends of the first and

second pipes

131 and 132 are simultaneously communicated with the second heat transfer area 114, and the other ends of the first and

second pipes

131 and 132 are connected to the first and third

heat transfer areas

113 and 115, respectively. Of course, one end of the first pipe 131 and one end of the second pipe 132 may be simultaneously connected to the first heat transfer area 113, and in this case, the other end of the first pipe 131 and the other end of the second pipe 132 may be connected to the second heat transfer area 114 and the third heat transfer area 115, respectively. Alternatively, one end of the first pipe 131 and one end of the second pipe 132 may simultaneously communicate with the third heat transfer region 115, and in this case, the other end of the first pipe 131 and the other end of the second pipe 132 are connected to the second heat transfer region 114 and the first heat transfer region 113, respectively, which is not limited herein.

In this embodiment, when one end of the first pipe 131 and one end of the second pipe 132 are simultaneously communicated with the second heat transfer area 114, the first valve 120 is disposed between the first heat transfer area 113 and the first port 101 and/or the second port 102, and the first valve 120 is disposed between the third heat transfer area 115 and the first port 101 and/or the second port 102. When one end of the first pipe 131 and the second pipe 132 can also be simultaneously communicated with the first heat transfer region 113, a first valve 120 is arranged between the second heat transfer region 114 and the first port 101 and/or the second port 102, and a first valve 120 is arranged between the third heat transfer region 115 and the first port 101 and/or the second port 102. When one end of the first pipe 131 and the second pipe 132 can also be simultaneously communicated with the third heat transfer area 115, a first valve 120 is arranged between the first heat transfer area 113 and the first port 101 and/or the second port 102, and a first valve 120 is arranged between the second heat transfer area 114 and the first port 101 and/or the second port 102.

Of course, in other embodiments, the first valve 120 is disposed between the first heat transfer region 113 and the first port 101 and/or the second port 102, the first valve 120 is disposed between the second heat transfer region 114 and the first port 101 and/or the second port 102, and the first valve 120 is disposed between the third heat transfer region 115 and the first port 101 and/or the second port 102, which are not limited herein. As long as the heat exchanger 100 is in the cooling mode by controlling the plurality of first valves 120 and the plurality of second valves 140, the first heat transfer zone 113, the second heat transfer zone 114, and the third heat transfer zone 115 are arranged in parallel; in the heating mode of the heat exchanger 100, at least two heat exchange zones 110 of the first heat exchange zone 113, the second heat exchange zone 114 and the third heat exchange zone 115 are connected in series.

In one embodiment, as shown in fig. 5, the heat exchanger 100 further comprises a third valve 150, the third valve 150 being disposed between the second heat transfer zone 114 and the first port 101.

It is understood that by providing the third valve 150 between the second heat transfer zone 114 and the first port 101, the first valve 120, the second valve 140, and the third valve 150 can be controlled such that the first heat transfer zone 113, the second heat transfer zone 114, and the third heat transfer zone 115 are arranged in parallel in the cooling mode of the heat exchanger 100; in the heating mode of the heat exchanger 100, the first heat exchange zone 113 and the third heat exchange zone 115 are connected in parallel, and then are connected in series with the second heat exchange zone 114.

As shown in fig. 3, the heat exchanger 100 of the present invention includes a first heat transfer zone 113, a second heat transfer zone 114, a third heat transfer zone 115, a first pipe 131 and a second pipe 132, wherein the first pipe 131 and the second pipe 132 are each provided with a second valve 140, a first valve 120 is provided between the first heat transfer zone 113 and the first port 101, a first valve 120 is provided between the third heat transfer zone 115 and the first port 101, and a third valve 150 is provided between the second heat transfer zone 114 and the second port 102.

When the heat exchanger 100 is in the cooling mode, the second valves 140 on the first pipe 131 and the second pipe 132 are controlled to be closed, the first valve 120 and the third valve 150 are controlled to be opened, and the refrigerant flows into the first heat transfer area 113, the second heat transfer area 114 and the third heat transfer area 115 from the first port 101, so that the refrigerants in the first heat transfer area 113, the second heat transfer area 114 and the third heat transfer area 115 are arranged in parallel, are collected to the second port 102 and flow out. At this time, the first heat transfer zone 113, the second heat transfer zone 114 and the third heat transfer zone 115 are connected in parallel, so that the pressure and the evaporation temperature of the refrigerant in each heat transfer zone 110 are effectively reduced, the heat transfer temperature difference is increased, and the heat transfer energy efficiency of the heat exchanger 100 in the cooling mode is improved.

When the heat exchanger 100 is in the heating mode, the second valves 140 on the first pipe 131 and the second pipe 132 are controlled to be opened, the first valve 120 and the third valve 150 are controlled to be closed, the refrigerant flows into the first heat transfer area 113 and the third heat transfer area 115 from the second port 102, so that the refrigerant in the first heat transfer area 113 and the refrigerant in the third heat transfer area 115 are arranged in parallel, and then flows into the second heat transfer area 114 through the first pipe 131 and the second pipe 132, so that the first heat transfer area 113 and the third heat transfer area 115 are arranged in series with the second heat transfer area 114, and finally are collected to the first port 101 and flow out. At this time, since the first heat transfer area 113, the third heat transfer area 115 and the second heat transfer area 114 are arranged in series, the flow and the heat transfer time of the refrigerant in the heat transfer area 110 are effectively increased, so that the heat transfer energy efficiency of the heat exchanger 110 in the heating mode is improved.

In another embodiment, as shown in fig. 5, the heat exchanger 100 of the present invention includes a first heat transfer region 113, a second heat transfer region 114, a third heat transfer region 115, a first pipe 131 and a second pipe 132, wherein the first pipe 131 and the second pipe 132 are respectively provided with a second valve 140, a first valve 120 is arranged between the first heat transfer region 113 and the second port 102, a first valve 120 is arranged between the third heat transfer region 115 and the second port 102, and a third valve 150 is arranged between the second heat transfer region 114 and the first port 101.

When the heat exchanger 100 is in the heating mode, the second valves 140 on the first pipe 131 and the second pipe 132 are controlled to be opened, the first valve 120 and the third valve 150 are controlled to be closed, the refrigerant flows into the first heat exchange area 113 and the third heat exchange area 115 from the first port 101, so that the refrigerant in the first heat exchange area 113 and the refrigerant in the third heat exchange area 115 are arranged in parallel, and then flows into the second heat exchange area 114 through the first pipe 131 and the second pipe 132, so that the first heat exchange area 113 and the third heat exchange area 115 are arranged in series with the second heat exchange area 114, and finally, the refrigerant is collected to the second port 102 and flows out. At this time, since the first heat transfer area 113, the third heat transfer area 115 and the second heat transfer area 114 are arranged in series, the flow and the heat transfer time of the refrigerant in the heat transfer area 110 are effectively increased, so that the heat transfer energy efficiency of the heat exchanger 110 in the heating mode is improved.

It is understood that the setting positions of the first valve 120 and the third valve 150 can be set and controlled according to practical application scenarios and modes, so that the plurality of heat exchange zones 110 are arranged in parallel when the heat exchanger 100 is in the cooling mode, and at least two heat exchange zones 110 are arranged in series when the heat exchanger 100 is in the heating mode, which is not limited herein.

In an embodiment, as shown in fig. 3, 4 and 5, the heat exchanger 100 further comprises a distributor 103, the distributor 103 connecting the first port 101 with the at least two heat transfer zones 110.

It is understood that by providing the distributor 103 between the first port 101 and the plurality of heat transfer zones 110, the refrigerant flowing from the first port 101 may be distributed to the branch pipes 112 of the plurality of heat transfer zones 110 by the distributor 103. Alternatively, the refrigerant in the branch pipes 112 of the plurality of heat transfer areas 110 may be collected by the distributor 103 and flow out of the first port 101.

In an embodiment, as shown in fig. 3, 4 and 5, the heat exchanger 100 further comprises a flow splitter 104, the flow splitter 104 connecting the second port 102 with at least two heat transfer zones 110.

It is understood that by providing a flow splitter 104 between the second port 102 and the plurality of heat transfer zones 110, the refrigerant flowing from the second port 102 may be distributed by the flow splitter 104 into the branch pipes 112 of the plurality of heat transfer zones 110. Alternatively, the refrigerant in the branch pipes 112 of the plurality of heat transfer zones 110 may be collected by the flow splitter 104 and flow out of the second port 102.

In one embodiment, as shown in fig. 3, 4 and 5, each heat transfer area 110 includes fins 111 and a branch pipe 112 disposed in the fins 111, one end of the branch pipe 112 is connected to the first port 101, and the other end of the branch pipe 112 is connected to the second port 102.

It will be appreciated that the fins 111 of each heat transfer zone 110 may be integral with the fins 111 of the other heat transfer zone 110, thus increasing the structural strength of the heat exchanger 100. Of course, the fins 111 of each heat transfer area 110 and the fins 111 of another heat transfer area 110 may be separately disposed, so that the heat transfer area of the heat exchanger 100 may be increased. The branch pipes 112 penetrating the fins 111 may be disposed in a serpentine shape or bent shape, so as to effectively increase the heat exchange area of the heat exchange region 110.

As shown in fig. 3 and 5, when the piping 130 communicates with the two heat transfer zones 110 in the heat exchanger 100 according to the present invention, the piping 130 communicates with the inlet of one heat transfer zone 110 and the outlet of the other heat transfer zone 110, and at this time, a first connection point is formed at a connection position of the piping 130 with the inlet of the one heat transfer zone 110, and a second connection point is formed at a connection position of the piping 130 with the outlet of the other heat transfer zone 110, or the first valve 120, the second valve 140, and the third valve 150 may be replaced with two three-way valves, which are respectively disposed at the first connection point and the second connection point. It is understood that the inlet of heat exchange area 110 refers to the port where the cooling medium flows into heat exchange area 110, and the outlet of heat exchange area 110 refers to the port where the cooling medium flows out of heat exchange area 110. In some embodiments, the inlet of the heat exchange area 110 may be used for the inflow of the refrigerant and the outflow of the refrigerant; the outlet of the heat exchange area 110 may be used for both the inflow and outflow of the refrigerant.

Of course, the first valve 120 and the second valve 140 may be replaced by a three-way valve, where the three-way valve is disposed at the first connection point and the third valve 150 is disposed between the second connection point and the second port 102. Alternatively, the second valve 140 and the third valve 150 may be replaced with a three-way valve, where the three-way valve is disposed at the second connection point and the first valve 120 is disposed between the first connection point and the first port 101.

As shown in fig. 3 and 5, the heat exchanger 100 of the present invention includes a first heat transfer zone 113, a second heat transfer zone 114, a third heat transfer zone 115, a first pipe 131 and a second pipe 132, wherein the first pipe 131 connects an inlet of the first heat transfer zone 113 and an outlet of the second heat transfer zone 114, a first connection point is formed at a connection point of the first pipe 131 and the inlet of the first heat transfer zone 113, a second connection point is formed at a connection point of the first pipe 131 and the outlet of the second heat transfer zone 114, the second pipe 132 connects an inlet of the third heat transfer zone 115 and the outlet of the second heat transfer zone 114, a third connection point is formed at a connection point of the second pipe 132 and the inlet of the third heat transfer zone 115, and a fourth connection point is formed at a connection point of the second pipe 132 and the outlet of the second heat transfer zone 114, and when the second connection point and the fourth connection point coincide with each other.

In this embodiment, the two first valves 120, the two second valves 140, and the third valve 150 may be replaced with a four-way valve and two three-way valves, the four-way valve being provided at the second connection point (i.e., the fourth connection point), and the two three-way valves being provided at the first connection point and the third connection point, respectively. It is understood that the inlets of the first heat transfer area 113, the second heat transfer area 114 and the third heat transfer area 115 refer to the ports for the cooling medium to flow into the heat transfer area 110, and the outlets of the first heat transfer area 113, the second heat transfer area 114 and the third heat transfer area 115 refer to the ports for the cooling medium to flow out of the heat transfer area 110. In some embodiments, the inlets of the first heat transfer zone 113, the second heat transfer zone 114 and the third heat transfer zone 115 may be used for both the inflow and outflow of the refrigerant; the outlets of the first heat transfer area 113, the second heat transfer area 114, and the third heat transfer area 115 may be used for the inflow of the refrigerant or the outflow of the refrigerant.

Of course, the two first valves 120 and the two second valves 140 may be replaced by two three-way valves, where the two three-way valves are disposed at the first connection point and the third connection point, respectively, and the third valve 150 is disposed between the second port 102 and the second connection point (i.e., the fourth connection point). Alternatively, the first valve 120 between the first heat transfer zone 113 and the first port 101 and the second valve 140 on the first pipe 131 are replaced with a three-way valve provided at the first connection point, and the third valve 150 is provided between the second port 102 and the second connection point (i.e., the fourth connection point), so that the other valves and the installation positions thereof are inconvenient. Alternatively, the first valve 120 between the third heat transfer area 115 and the first port 101 and the second valve 140 on the second pipe 132 are replaced by three-way valves, the three-way valves are disposed at the third connection point, and the third valve 150 is disposed between the second port 102 and the second connection point (i.e., the fourth connection point), and the other valves and the positions where they are disposed are inconvenient, which is not limited herein.

As shown in fig. 1 and fig. 2, the present invention further provides an air conditioning indoor unit 200, which includes a casing 210 and a heat exchanger 100, wherein the casing 210 is provided with an installation cavity 220, and the heat exchanger 100 is arranged in the installation cavity 220. The specific structure of the heat exchanger 100 refers to the foregoing embodiments, and since the present air-conditioning indoor unit 200 adopts all the technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here.

It is understood that the air conditioning indoor unit 200 may be a wall-mounted air conditioning indoor unit or a cabinet air conditioning indoor unit, and is not limited thereto. The indoor unit 200 of the air conditioner further comprises a wind wheel and an electric control assembly arranged in the installation cavity 220, the installation cavity 220 is provided with an air inlet and an air outlet, and the air guide assembly is arranged at the air outlet.

As shown in fig. 1 and 2, the present invention further provides an air conditioner 500, which includes an outdoor unit 300 and an indoor unit 200, wherein the outdoor unit 300 is communicated with the heat exchanger 100 of the indoor unit 200 through a pipeline. The specific structure of the air conditioner indoor unit 200 refers to the foregoing embodiments, and since the air conditioner 500 adopts all technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here.

In this embodiment, the outdoor unit 300 includes a compressor 310, an outdoor heat exchanger 320, a throttle device 330, and the like, and the compressor 310, the outdoor heat exchanger 320, the throttle device 330, and the heat exchanger 100 of the indoor unit 200 are sequentially connected by pipes to constitute a refrigerant circuit of the air conditioner 500. It will be appreciated that the restriction 330 may alternatively be a throttle valve, an electronic expansion valve, or the like.

It is understood that, in order to achieve free switching of different operation modes of the air conditioner 500, the air conditioner 500 further includes a four-way valve 400, and the four-way valve 400 is used to communicate the discharge port of the compressor 310 with the outdoor heat exchanger 320 or the heat exchanger 100 of the indoor unit 200 of the air conditioner and communicate the suction port of the compressor 310 with the outdoor heat exchanger 320 or the heat exchanger 100 of the indoor unit 200 of the air conditioner.

As shown in fig. 1, when the air conditioner 500 is in the cooling mode, the four-way valve 400 communicates the discharge port of the compressor 310 with the outdoor heat exchanger 320, and communicates the suction port of the compressor 310 with the second port 102 of the heat exchanger 100 of the indoor air conditioner 200. At this time, the compressor 310 discharges the refrigerant, passes through the four-way valve 400, the outdoor heat exchanger 320, and the throttle device 330, enters the different heat exchange areas 110 of the heat exchanger 100 from the first port 101 of the heat exchanger 100 of the indoor air conditioner 200, flows out from the second port 102, and flows into the suction port of the compressor 310 from the four-way valve 400.

As shown in fig. 2, when the air conditioner 500 is in the heating mode, the four-way valve 400 communicates the discharge port of the compressor 310 with the second port 102 of the heat exchanger 100 of the indoor air conditioner 200, and communicates the suction port of the compressor 310 with the outdoor heat exchanger 320. At this time, the compressor 310 discharges the refrigerant, enters the different heat exchange areas 110 of the heat exchanger 100 from the second port 102 of the heat exchanger 100 of the air conditioning indoor unit 200 through the four-way valve 400, flows out of the first port 101, and flows into the suction port of the compressor 310 through the throttle device 330, the outdoor heat exchanger 320, and the four-way valve 400.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A heat exchanger is characterized by comprising a first port, a second port and at least two heat exchange areas arranged between the first port and the second port in parallel, wherein a first valve is arranged between at least one heat exchange area and the first port and/or the second port;

2. The heat exchanger of claim 1, wherein the heat exchanger includes three heat transfer zones, wherein the tubing communicates between any two of the heat transfer zones, and wherein the first valve is disposed between at least one of the heat transfer zones and the first port and/or the second port in any two of the heat transfer zones.

3. The heat exchanger of claim 1, wherein said heat exchanger includes three of said heat transfer zones and two of said piping, each of said piping having said second valve, each of said piping communicating with two of said heat transfer zones, at least two of said heat transfer zones having said first valve disposed between them and said first port and/or said second port, respectively.

4. The heat exchanger of claim 3, wherein the three heat transfer zones are a first heat transfer zone, a second heat transfer zone, and a third heat transfer zone, the two piping are a first piping and a second piping, the first piping communicates the first heat transfer zone and the second heat transfer zone, the second piping communicates the third heat transfer zone and the second heat transfer zone, the first valve is disposed between the first heat transfer zone and the first port and/or the second port, and the first valve is disposed between the third heat transfer zone and the first port and/or the second port.

5. The heat exchanger of claim 4, further comprising a third valve disposed between the second heat transfer zone and the first port.

6. The heat exchanger of any one of claims 1 to 5, further comprising a distributor connecting the first port with at least two heat exchange zones.

7. The heat exchanger of any one of claims 1 to 5, further comprising a flow splitter connecting the second port with at least two heat exchange zones.

8. The heat exchanger of any one of claims 1 to 5, wherein each of the heat exchange regions comprises a fin and a branch tube provided in the fin, one end of the branch tube being connected to the first port, and the other end of the branch tube being connected to the second port.

9. An indoor unit of an air conditioner, comprising a casing and the heat exchanger as claimed in any one of claims 1 to 8, wherein the casing is provided with a mounting cavity, and the heat exchanger is arranged in the mounting cavity.

10. An air conditioner comprising an outdoor unit and the indoor unit as claimed in claim 9, wherein the outdoor unit is connected to the heat exchanger of the indoor unit through a pipe.