CN217236140U

CN217236140U - Heat exchanger and air conditioner

Info

Publication number: CN217236140U
Application number: CN202220244881.1U
Authority: CN
Inventors: 赵振立; 安超
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-01-29
Filing date: 2022-01-29
Publication date: 2022-08-19
Anticipated expiration: 2032-01-29
Also published as: WO2023142875A1

Abstract

The utility model relates to a heat transfer technical field specifically provides a heat exchanger and air conditioner. The heat exchanger aims to solve the problem that the existing heat exchanger is difficult to simultaneously give consideration to both heating performance and refrigerating performance. Therefore, the utility model discloses a heat exchanger includes heat exchange tube group, discharge group and liquid collecting tube group, and heat exchange tube group includes a plurality of heat exchange tubes, and a plurality of heat exchange tubes are parallelly connected and set up, and the discharge group includes a plurality of discharge, and a plurality of discharge is the series connection setting, is provided with first check valve between two adjacent discharges, and every discharge and at least one heat exchange tube are linked together, and liquid collecting tube group includes a plurality of collecting tubes, and a plurality of collecting tubes and a plurality of heat exchange tube are linked together. The utility model discloses an improve the flow path of heat exchanger to make the heat exchanger can increase the subcooling design when being used as the condenser, and can cancel the subcooling design again when being used as the evaporimeter, thereby make the heat exchanger all can obtain make full use of when air conditioner operation refrigeration mode and heating mode, so that compromise the refrigerating capacity and the heating capacity of heat exchanger simultaneously.

Description

Heat exchanger and air conditioner

Technical Field

The utility model relates to a heat transfer technical field specifically provides a heat exchanger and air conditioner.

Background

With the increasing popularization of air conditioners, users also put forward higher and higher requirements on the comprehensive performance of the air conditioners; especially, for the heat exchange performance of the air conditioner, the comprehensive energy consumption of the air conditioner is directly influenced, and the heat exchange efficiency of the heat exchanger directly influences the heat exchange performance of the whole air conditioner, so that the heat exchange performance of the air conditioner is very important. However, since the air conditioner is switched between the cooling mode and the heating mode, the functions of the indoor heat exchanger and the outdoor heat exchanger are interchanged; for example, the condenser plays a role in condensing heat exchange during refrigeration, and plays a role in evaporating heat exchange during heating. Based on this, if the air conditioner adopts the unified refrigerant reposition of redundant personnel mode in refrigeration process and the heating process, can not guarantee that the heat exchanger can both realize even reposition of redundant personnel effect in refrigeration mode and heating mode, also can not guarantee that the air conditioner can both reach optimal heat transfer effect when operation refrigeration mode and operation heating mode.

Specifically, the existing air conditioner adopts a uniform shunting mode when running in a cooling mode and a heating mode, and based on the uniform shunting mode, in order to improve the cooling capacity and the cooling energy efficiency ratio, the air conditioner needs to correspondingly increase supercooling, namely, the arrangement of a supercooling pipe is correspondingly increased, but if the arrangement of the supercooling pipe is too much, the heating capacity and the heating energy efficiency ratio of the air conditioner are adversely affected; however, in order to improve the heating capacity and the heating energy efficiency ratio, the air conditioner needs to reduce the arrangement of the supercooling pipe correspondingly, even eliminate the supercooling design. Therefore, when designing a heat exchanger, in order to improve the cooling capacity and energy efficiency, a part of the heating performance must be sacrificed, and in order to improve the heating performance, a supercooling design must be reduced, and a part of the cooling performance is sacrificed accordingly, which is a conflicting problem. Therefore, for the existing heat exchanger, the same heat exchanger can not realize optimal heat exchange in both cooling operation and heating operation.

Accordingly, there is a need in the art for a new heat exchanger and air conditioner that addresses the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving above-mentioned technical problem, promptly, solve current heat exchanger and be difficult to compromise the problem of heating performance and refrigeration performance simultaneously.

In a first aspect, the utility model provides a heat exchanger, which comprises a heat exchange tube group, a gas collecting tube group and a liquid collecting tube group,

the heat exchange tube group comprises a plurality of heat exchange tubes which are arranged in parallel,

the gas collecting pipe group comprises a plurality of gas collecting pipes which are arranged in series, a first one-way valve is arranged between every two adjacent gas collecting pipes, each gas collecting pipe is communicated with at least one heat exchange pipe,

the liquid collecting pipe group comprises a plurality of liquid collecting pipes, and the plurality of liquid collecting pipes are communicated with the plurality of heat exchange pipes.

In the preferable technical scheme of the heat exchanger, the number of the gas collecting pipes is two, the two gas collecting pipes are respectively a first gas collecting pipe and a second gas collecting pipe,

the first one-way valve is set to be communicated with the first gas collecting pipe and the second gas collecting pipe under the heating working condition and not communicated with the second gas collecting pipe under the cooling working condition to isolate the second gas collecting pipe.

In the preferable technical scheme of the heat exchanger, the number of the heat exchange tubes communicated with the first gas collecting tube is greater than that of the heat exchange tubes communicated with the second gas collecting tube.

In a preferred technical solution of the above heat exchanger, the length of the first gas collecting pipe is greater than the length of the second gas collecting pipe.

In a preferred technical solution of the above heat exchanger, the plurality of header pipes includes a first header pipe and a second header pipe,

the first liquid collecting pipe and the second liquid collecting pipe are arranged in parallel.

In the preferable technical scheme of the heat exchanger, the first liquid collecting pipe is provided with a one-way throttle valve,

the one-way throttle valve is set to be conducted and throttled under a heating working condition and conducted without throttling under a cooling working condition.

In the preferable technical scheme of the heat exchanger, a second one-way valve is arranged on the second liquid collecting pipe,

the second check valve is set to conduct under a heating condition and not conduct under a cooling condition.

In the preferable technical scheme of the heat exchanger, at least two liquid collecting branches which are arranged in parallel are arranged on the second liquid collecting pipe,

the liquid collecting branch is positioned at the downstream of the second one-way valve.

In the preferable technical scheme of the heat exchanger, a liquid distributor is arranged on the liquid collecting branch.

In a second aspect, the present invention provides an air conditioner comprising a heat exchanger as set forth in any one of the above preferred embodiments.

Under the condition that adopts above-mentioned technical scheme, the utility model discloses a heat exchanger includes heat exchange tube group, discharge group and collector group, heat exchange tube group includes a plurality of heat exchange tubes, a plurality of heat exchange tubes are parallelly connected the setting, the discharge group includes a plurality of discharge, a plurality of discharge are the series connection setting, adjacent two be provided with a check valve, and every between the discharge is with at least one the heat exchange tube is linked together, the collector group includes a plurality of collectors, a plurality of collectors with a plurality of heat exchange tubes are linked together. Based on the structure setting, the utility model discloses an improve the flow path of heat exchanger, so that the heat exchanger can increase the subcooling design when being used as the condenser, and can cancel the subcooling design again when being used as the evaporimeter, thereby makes the heat exchanger homoenergetic when air conditioner operation refrigeration mode and heating mode can obtain make full use of, so as to compromise simultaneously the refrigeration ability and the heating ability of heat exchanger, and then make the heat exchanger can reach best heat transfer effect all the time.

Drawings

The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Moreover, in the drawings, like numerals are used to indicate like parts, and in which:

fig. 1 is a schematic view of the overall structure of the heat exchanger of the present invention;

reference numerals:

11. a heat exchange tube set; 111. a heat exchange pipe;

12. a gas collecting pipe group; 121. a first gas collecting pipe; 122. a second gas collecting pipe; 123. a first check valve;

13. a liquid collecting pipe group; 131. a first liquid collecting pipe; 1311. a one-way throttle valve; 132. a second liquid collecting pipe; 1321. a second one-way valve; 1322. a first liquid collecting branch; 1323. a second liquid collecting branch; 1324. a first liquid separator; 1325. and a second liquid separator.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, the air conditioner of the utility model can be a household air conditioner, and also can be a commercial air conditioner; for example, the air conditioner of the present invention may be a one-to-one air conditioner or a multi-to-one air conditioner. Such changes of application objects do not deviate from the basic principle of the present invention, and shall belong to the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "middle", "vertical", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, unless otherwise expressly specified or limited in this description, the terms "connected," "connected," and "communicating" are to be construed broadly, e.g., as meaning directly connected to one another, indirectly connected through intervening media, and communicating between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Specifically, the utility model discloses an air conditioner includes indoor set and off-premises station, be provided with refrigerant circulation circuit between indoor set and the off-premises station, refrigerant circulation circuit has the refrigerant that is used for carrying out the heat transfer at indoor and outdoor in the circulation, be provided with indoor heat exchanger, compressor, cross valve, outdoor heat exchanger and electronic expansion valve on the refrigerant circulation circuit; the indoor heat exchanger is arranged in the indoor unit, and the outdoor heat exchanger is arranged in the outdoor unit; the refrigerant continuously circulates between the indoor heat exchanger and the outdoor heat exchanger through the refrigerant circulation loop to realize heat exchange, and the refrigerant in the refrigerant circulation loop is controlled to realize reverse circulation when the four-way valve is reversed, so that the air conditioner is switched between a refrigerating working condition and a heating working condition. It should be noted that the present invention does not limit the specific structure of the air conditioner, the heat exchanger of the present invention can be used as the indoor heat exchanger and also as the outdoor heat exchanger, and the technician can set the heat exchanger according to the actual use requirement.

Taking the heat exchanger of the utility model as an example when used as an outdoor heat exchanger, refer to fig. 1, as shown in fig. 1, the heat exchanger comprises a heat exchange tube group 11, a gas collecting tube group 12 and a liquid collecting tube group 13, referring to the position in fig. 1, the heat exchange tube group 11 is located in the middle of the heat exchanger, the gas collecting tube group 12 is located at the left part of the heat exchanger, and the liquid collecting tube group 13 is located at the right part of the heat exchanger; of course, the specific arrangement direction is not restrictive, and the person skilled in the art can adjust the arrangement direction according to the actual use requirement. The heat exchange tube set 11 comprises a plurality of heat exchange tubes 111, the heat exchange tubes 111 are arranged in parallel, the gas collecting tube set 12 comprises a plurality of gas collecting tubes, the gas collecting tubes are arranged in series, a first one-way valve is arranged between every two adjacent gas collecting tubes, each gas collecting tube is communicated with at least one heat exchange tube 111, the liquid collecting tube set 13 comprises a plurality of liquid collecting tubes, and the liquid collecting tubes are communicated with the heat exchange tubes 111. It should be noted that, the present invention does not limit the specific number and size of the heat exchange tube 111, the gas collecting tube and the liquid collecting tube, and those skilled in the art can set the heat exchange tube according to actual use requirements.

In this embodiment, the number of the heat exchange tubes 111 is ten, the number of the gas collecting tubes is two, the two gas collecting tubes are respectively a first gas collecting tube 121 and a second gas collecting tube 122, the first gas collecting tube 121 is located above the second gas collecting tube 122, a first one-way valve 123 is disposed between the first gas collecting tube 121 and the second gas collecting tube 122, the first one-way valve 123 is configured to be conducted under a heating condition to communicate the first gas collecting tube 121 with the second gas collecting tube 122, and the first one-way valve 123 is further configured to be not conducted under a cooling condition to isolate the second gas collecting tube 122. It should be noted that, the present invention does not limit any specific type of the first check valve 123, and those skilled in the art can set the type according to actual requirements.

Further, the first gas collecting pipe 121 located at the upper side communicates with six heat exchange pipes 111, and the second gas collecting pipe 122 located at the lower side communicates with four heat exchange pipes 111, that is, the number of the heat exchange pipes 111 communicated with the first gas collecting pipe 121 is greater than the number of the heat exchange pipes 111 communicated with the second gas collecting pipe 122, and the length of the first gas collecting pipe 121 is greater than that of the second gas collecting pipe 122. It should be noted that the utility model discloses do not make any restriction to the specific quantity and the length of the heat exchange tube 111 of first gas collecting pipe 121 and second gas collecting pipe 122 intercommunication, as long as an optimal mode of setting up, the quantity of the heat exchange tube 111 of first gas collecting pipe 121 intercommunication is greater than the quantity of the heat exchange tube 111 of second gas collecting pipe 122 intercommunication and the length of first gas collecting pipe 121 is greater than the length of second gas collecting pipe 122 can, the technical staff can set for by oneself according to the in-service use demand.

Based on the arrangement mode, when the air conditioner operates in a heating working condition, the first one-way valve 123 is conducted, so that the first gas collecting pipe 121 and the second gas collecting pipe 122 are communicated, and further the first gas collecting pipe 121 and the second gas collecting pipe 122 can participate in a heating cycle, so that a small outlet temperature difference is effectively kept, the uniformity of heating shunting is ensured, and the evaporation pressure is improved, so that the heating capacity and the heating efficiency of the heat exchanger are improved; when the air conditioner operates in a refrigeration working condition, the first check valve 123 is not conducted, so that the second gas collecting pipe 122 is separated, and only the first gas collecting pipe 121 participates in a refrigeration cycle, and therefore the supercooling degree is effectively improved, and the refrigeration capacity and the refrigeration efficiency of the heat exchanger are improved.

With continued reference to fig. 1, as shown in fig. 1, in the present embodiment, the plurality of headers includes a first header 131 and a second header 132, and the first header 131 and the second header 132 are disposed in parallel. Of course, this is only a preferred arrangement, but not a limiting arrangement, and the technician can set it according to the actual use requirement.

Further, the first header pipe 131 is communicated with one heat exchange pipe 111, and a one-way throttle valve 1311 is provided on the first header pipe 131, the one-way throttle valve 1311 is configured to be conducted and throttled under a heating condition, and conducted without throttling under a cooling condition. In other words, when the air conditioner operates in a heating condition, the one-way throttle valve 1311 can throttle the refrigerant flowing through the one-way throttle valve 1311, and when the air conditioner operates in a cooling condition, the one-way throttle valve 1311 does not throttle the refrigerant flowing through the one-way throttle valve 1311, so that the cooling capacity and the heating capacity of the heat exchanger are considered at the same time. It should be noted that the present invention does not limit the specific type and the specific setting position of the one-way throttle valve 1311, and those skilled in the art can set the setting according to the actual use requirement.

In addition, a second check valve 1321 is arranged on the main path of the second liquid collecting pipe 132, and the second check valve 1321 is set to be conducted under the heating working condition and not conducted under the cooling working condition; that is, when the air conditioner operates in a heating condition, the second check valve 1321 is turned on to allow the refrigerant to flow, and when the air conditioner operates in a cooling condition, the second check valve 1321 is turned off to intercept the refrigerant. It should be noted that, the present invention does not limit the specific type and the specific setting position of the second check valve 1321, and those skilled in the art can set the setting according to the actual use requirement.

Further, referring to the orientation of FIG. 1, the second header 132 above the second check valve 1321 is provided as two parallel-arranged header branches, namely, a first header branch 1322 and a second header branch 1323. It should be noted that, the present invention does not limit the specific setting quantity and the specific setting position of the liquid collecting branch, and the skilled person can set the setting according to the actual use requirement, as long as the liquid collecting branch is located at the downstream of the second check valve 1321, it can be understood that the downstream refers to the downstream when the second check valve 1321 is turned on.

With continued reference to fig. 1, as shown in fig. 1, in the present embodiment, a first liquid collecting branch 1322 is provided with a first liquid separator 1324, and a second liquid collecting branch 1323 is provided with a second liquid separator 1325; it should be noted that, the present invention does not limit the specific structure and type of the first liquid separator 1324 and the second liquid separator 1325, and the skilled person can set the number according to the specific arrangement of the heat exchange tubes 111. Specifically, the first liquid separator 1324 can continuously divide the first liquid collecting branch 1322 into three paths, and the three paths are respectively communicated with one heat exchange tube 111; the second liquid divider 1325 can divide the second liquid collecting branch 1323 into six paths, which are respectively communicated with one heat exchanging pipe 111. Of course, this arrangement is not restrictive, and the technician can adjust the arrangement according to actual use requirements.

In addition, the heat exchanger further comprises two fans (not shown in the figure), and the two fans are respectively arranged at the upper part and the lower part of the heat exchanger so as to effectively improve the heat exchange efficiency. It should be noted that, the utility model discloses do not do the concrete quantity that sets up, set up position and type of fan do any restriction, and the technical staff can set for by oneself according to the in-service use demand.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is obvious to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A heat exchanger is characterized by comprising a heat exchange tube group, a gas collecting tube group and a liquid collecting tube group,

2. The heat exchanger of claim 1, wherein the number of gas headers is two, the two gas headers being a first gas header and a second gas header,

3. The heat exchanger of claim 2, wherein the number of heat exchange tubes with which the first header communicates is greater than the number of heat exchange tubes with which the second header communicates.

4. The heat exchanger of claim 3, wherein the first header has a length greater than a length of the second header.

5. The heat exchanger of any one of claims 1 to 4, wherein the plurality of header pipes comprises a first header pipe and a second header pipe,

6. The heat exchanger as claimed in claim 5, wherein a one-way throttle valve is provided on the first header pipe,

7. The heat exchanger of claim 6, wherein a second one-way valve is disposed on the second header pipe,

8. The heat exchanger as claimed in claim 7, wherein the second header pipe is provided with at least two header branches arranged in parallel,

9. The heat exchanger of claim 8, wherein a liquid separator is disposed on the liquid collecting branch.

10. An air conditioner characterized in that it comprises a heat exchanger according to any one of claims 1 to 9.