CN110360742B

CN110360742B - Heat exchange pipeline, heat exchange system and air conditioner

Info

Publication number: CN110360742B
Application number: CN201910726478.5A
Authority: CN
Inventors: 薛寒冬; 傅英胜; 倪毅; 赵亮
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-08-11
Anticipated expiration: 2039-08-07
Also published as: CN110360742A

Abstract

The invention provides a heat exchange pipeline, a heat exchange system and an air conditioner. The heat exchange pipeline comprises a plurality of capillary heat exchange units and a heating device, the capillary heat exchange units are arranged in series, and the heating device is arranged on the pipeline connecting the adjacent capillary heat exchange units. The heat exchange medium which is subjected to heat transfer is heated through the heating device, so that the heat of the heat exchange medium is improved, the heat exchange temperature of the heat exchange medium entering the next capillary tube heat exchange unit for heat exchange operation is consistent with the heat exchange temperature of the previous capillary tube heat exchange unit, the heat exchange temperature of each capillary tube heat exchange unit is the same, the purpose of uniform heat exchange of a plurality of capillary tube heat exchange units is achieved, and the practicability and the reliability of the heat exchange pipeline are effectively improved.

Description

Heat exchange pipeline, heat exchange system and air conditioner

Technical Field

The invention relates to the technical field of air conditioning equipment, in particular to a heat exchange pipeline, a heat exchange system and an air conditioner.

Background

In an air conditioning system using a capillary network as an inside heat exchanger, capillaries are laid inside a room floor for indoor side heating or cooling. Because the internal flow of a single capillary is small, the flow of a pipeline is long, and the following problems exist in the heating process: the temperature of the refrigerant in the first half section is higher, the heating effect is good, the temperature of the refrigerant in the second half section is reduced, the heating effect is poor, and the problems of uneven temperature and poor comfort of the floor surface are caused.

Disclosure of Invention

The invention mainly aims to provide a heat exchange pipeline, a heat exchange system and an air conditioner, and aims to solve the problem that the heat exchange pipeline in the prior art is uneven in heat exchange.

In order to achieve the above object, according to one aspect of the present invention, there is provided a heat exchange pipeline, including a plurality of capillary heat exchange units and a heating device, where the plurality of capillary heat exchange units are arranged in series, and the heating device is arranged on a pipeline connecting adjacent capillary heat exchange units.

Further, each capillary heat exchange unit comprises: a first refrigerant pipe section; the first end of the first liquid separation head is communicated with the first end of the first refrigerant pipe section; the first end of the capillary network is communicated with the second end of the first liquid separation head; the first end of the second liquid separation head is communicated with the second end of the capillary network; the first end of the second refrigerant pipe section is communicated with the second end of the second liquid separation head; the second refrigerant pipe section of one capillary heat exchange unit in the two adjacent capillary heat exchange units is communicated with the first refrigerant pipe section in the other capillary heat exchange unit, and the heating device is arranged on the second refrigerant pipe section.

Furthermore, after the refrigerant introduced from the second end of the first refrigerant pipe section is distributed to the capillary network through the first liquid distribution head, the refrigerant in the capillary network is collected at one position through the second liquid distribution head and is discharged through the second refrigerant pipe section.

Furthermore, after the refrigerant introduced from the second end of the second refrigerant pipe section is distributed to the capillary network through the second liquid distribution head, the refrigerant in the capillary network is collected at one position through the first liquid distribution head and is discharged through the first refrigerant pipe section.

Further, the capillary network comprises a plurality of individual capillaries.

Further, the number of the capillary heat exchange units is at least two.

Further, the heating device includes: the refrigerant tank is communicated with the second refrigerant pipe section; and the electric heating wire is arranged on the outer surface of the refrigerant tank.

Further, the heating device includes: and the electric heating wire is arranged on the outer surface of the second refrigerant pipe section.

According to another aspect of the present invention, a heat exchange system is provided, which includes the heat exchange pipeline, and the heat exchange pipeline is laid on the inner side of the indoor wall and/or the floor.

Further, a plurality of capillary heat transfer units set up in proper order in series, and heat transfer system still includes: one end of the evaporator is communicated with the second end of the first refrigerant pipe section of the capillary heat exchange unit positioned at the front end; one end of the condenser is communicated with the second end of the second refrigerant pipe section of the capillary heat exchange unit positioned at the tail end; and the compressor is arranged on a pipeline between the evaporator and the condenser and is used for providing a heat exchange refrigerant for the heat exchange system.

Furthermore, the heat exchange system has a heating mode and a cooling mode, and the refrigerant flow direction of the heat exchange pipeline in the heating mode is opposite to the refrigerant flow direction of the heat exchange pipeline in the cooling mode.

According to another aspect of the present invention, an air conditioner is provided, which includes a heat exchange system, wherein the heat exchange system is the above-mentioned heat exchange system.

By applying the technical scheme of the invention, the heating device is arranged among the capillary heat exchange units, because the previous capillary heat exchange unit preferentially conducts heat transfer operation in the heat exchange process of the heat exchange pipeline, the heat quantity of the heat exchange medium flowing through the capillary heat exchange unit is reduced, and when the heat exchange medium is about to flow into the next capillary heat exchange unit, the heating device heats the heat exchange medium after heat transfer so as to improve the heat of the heat exchange medium, and then the heat exchange temperature of the heat exchange medium entering the next capillary tube heat exchange unit for heat exchange operation is ensured to be consistent with the heat exchange temperature of the previous capillary tube heat exchange unit, thereby realizing that the heat exchange temperature at each capillary tube heat exchange unit is the same, the purpose of uniform heat exchange of a plurality of capillary tube heat exchange units is realized, and the practicability and the reliability of the heat exchange pipeline are effectively improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a heat exchange circuit according to the present invention.

Wherein the figures include the following reference numerals:

1. a first refrigerant pipe section; 2. a first liquid separation head; 3. a capillary network; 4. a second liquid separation head; 5. a second coolant pipe section; 6. a heating device.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1, a heat exchange circuit is provided according to an embodiment of the present invention.

The heat exchange pipeline comprises a plurality of capillary tube heat exchange units and a heating device. The plurality of capillary heat exchange units are arranged in series, and the heating device is arranged on a pipeline connecting the adjacent capillary heat exchange units.

In the embodiment, the heating device is arranged among the capillary heat exchange units, because the previous capillary heat exchange unit preferentially conducts heat transfer operation in the heat exchange process of the heat exchange pipeline, the heat quantity of the heat exchange medium flowing through the capillary heat exchange unit is reduced, and when the heat exchange medium is about to flow into the next capillary heat exchange unit, the heating device heats the heat exchange medium after heat transfer so as to improve the heat of the heat exchange medium, and then the heat exchange temperature of the heat exchange medium entering the next capillary tube heat exchange unit for heat exchange operation is ensured to be consistent with the heat exchange temperature of the previous capillary tube heat exchange unit, thereby realizing that the heat exchange temperature at each capillary tube heat exchange unit is the same, the purpose of uniform heat exchange of a plurality of capillary tube heat exchange units is realized, and the practicability and the reliability of the heat exchange pipeline are effectively improved.

Each capillary heat exchange unit comprises a first refrigerant pipe section 1, a first liquid separation head 2, a capillary network 3, a second liquid separation head 4 and a second refrigerant pipe section 5. The first end of the first liquid separation head 2 is communicated with the first end of the first refrigerant pipe section 1. The first end of the capillary network 3 is communicated with the second end of the first liquid separation head 2. The first end of the second liquid separation head 4 is communicated with the second end of the capillary network 3; the first end of the second refrigerant pipe section 5 is communicated with the second end of the second liquid separation head 4. The second refrigerant pipe section 5 of one capillary heat exchange unit in the two adjacent capillary heat exchange units is communicated with the first refrigerant pipe section 1 in the other capillary heat exchange unit, and the heating device is arranged on the second refrigerant pipe section 5.

In this embodiment, the capillary heat exchange units are arranged in a plurality of arrangement modes, so that the heat exchange pipelines can be uniformly arranged. Especially, when applying this heat transfer pipeline to carry out the heat transfer indoor, can arrange a plurality of capillary heat transfer units evenly indoor for indoor heat transfer is more even, has improved user's use and has experienced.

As shown in fig. 1, fig. 1 shows heat exchange pipelines of two units, after a refrigerant introduced from a second end of a first refrigerant pipe section 1 is shunted to a capillary network 3 through a first liquid dividing head 2, the refrigerant in the capillary network 3 is collected at one position through a second liquid dividing head 4 and is discharged through a second refrigerant pipe section 5. The heat exchange refrigerant can be uniformly distributed by the arrangement, the separated refrigerants can be collected at one position again and then are mixed to be separated, the temperature of the divided refrigerants is consistent each time, and the heat productivity of the heat exchange refrigerant entering the capillary network is consistent.

Further, after the refrigerant introduced from the second end of the second refrigerant pipe section 5 is distributed to the capillary network 3 through the second liquid distribution head 4, the refrigerant in the capillary network 3 is collected at one position through the first liquid distribution head 2 and is discharged through the first refrigerant pipe section 1. That is, in this embodiment, in one heat exchange pipeline unit, the flow dividing and returning functions can be realized through the first liquid dividing head 2 and the second liquid dividing head 4 in both flow directions of the refrigerant. The practicability of the heat exchange pipeline is further improved.

As shown in fig. 1, the capillary network 3 comprises a plurality of individual capillaries. Fig. 1 shows 8 independent capillaries, but the number of independent capillaries may be set according to the indoor heat exchange area.

Preferably, the number of capillary heat exchange units is at least two. The number of the capillary heat exchange units in fig. 1 is two, and the heat exchange units can also be set according to the indoor heat exchange area.

According to another embodiment of the application, the heat exchange line further comprises heating means. The heating device is arranged on a pipeline connecting adjacent capillary tube heat exchange units. The heat exchange efficiency of the heat exchange pipeline can be improved.

The heat exchange pipeline in the above embodiment may also be used in the technical field of heat exchange systems, that is, according to another aspect of the present invention, a heat exchange system is provided. The heat exchange system comprises a heat exchange pipeline, the heat exchange pipeline is the heat exchange pipeline in the embodiment, and the heat exchange pipeline is laid on the inner side of an indoor wall and/or a floor. The arrangement can improve indoor heat exchange efficiency, so that indoor heat exchange temperature is more uniform.

As shown in fig. 1, a plurality of capillary heat exchange units are sequentially arranged in series. The heat exchange system also comprises an evaporator, a condenser and a compressor. One end of the evaporator is communicated with the second end of the first refrigerant pipe section 1 of the capillary heat exchange unit positioned at the front end (namely, the first capillary heat exchange unit). One end of the condenser is communicated with the second end of the second refrigerant pipe section 5 of the capillary heat exchange unit positioned at the tail end (namely the capillary heat exchange unit positioned at the last after being connected in series). The compressor is arranged on a pipeline between the evaporator and the condenser, the compressor is used for providing a heat exchange refrigerant for the heat exchange system, and the flow direction of the refrigerant in the system can be switched through the four-way valve compressor. The heat exchange system has a heating mode and a refrigerating mode, and the refrigerant flow direction of the heat exchange pipeline in the heating mode is opposite to the refrigerant flow direction of the heat exchange pipeline in the refrigerating mode.

The heat exchange system can also be used in the technical field of air conditioner equipment, namely, according to another aspect of the invention, an air conditioner is provided. The air conditioner comprises a heat exchange system, wherein the heat exchange system is the heat exchange system in the embodiment.

Particularly, the heat exchange system effectively solves the problem of poor capillary network heating performance and also solves the problems of heating of the capillary network in a room and uneven floor temperature. The method improves the heat exchange performance of the capillary network and improves the comfort.

This application is to capillary network heat exchanger, adopts the mode of heating in the middle of two adjacent capillary heat transfer units, makes the capillary network realize even heating in the room. By adopting the scheme, the heat exchange performance of the capillary network can be improved, and the comfort is improved. As shown in fig. 1, the heat exchange system is integrally laid under the floor of a room for cooling and heating in the room.

In the air-conditioning heating mode, the compressor discharges high-temperature and high-pressure gaseous refrigerant to enter the capillary network 3 from the first refrigerant pipe section 1. The temperature of the refrigerant in the capillary tube is reduced through the heat exchange of the capillary tube, the refrigerant is concentrated in the middle of the capillary tube network, the electric heating device 6 is arranged, the refrigerant is heated and then redistributed to the capillary tube network 3, and the refrigerant is concentrated and enters the throttling device through the second refrigerant tube section 5 after the heat exchange. The heating device of the capillary network has the function of heating the refrigerant in the middle of the capillary network in a centralized manner, and can be in various structural forms. The part can be provided with a refrigerant tank, the outside of the refrigerant tank is provided with electric heating, or the outside of a refrigerant pipeline is provided with electric heating, and especially an electric heating wire can be arranged on the outer surface of the second refrigerant pipe section 5. If the refrigerant in the capillary is not heated, the heating capacity of the capillary network at the second half section may be low, and finally, the cold and heat distribution of the whole room is uneven, and the comfort is poor.

Compared with the form of directly heating the capillary tube, the method has the following advantages: 1. the heating mode has small floor area and simple arrangement, and does not need to lay large-area electric heating in a room; 2. the heating mode is safe and reliable, the heating device is centralized, and the maintenance is convenient. 3. This kind of heating method is to refrigerant centralized heating, and heat exchange efficiency is high, and heating effect is good, can not produce the inhomogeneous problem of heating.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat exchange pipeline is characterized by comprising a plurality of capillary tube heat exchange units and a heating device, wherein the capillary tube heat exchange units are arranged in series, and the heating device is arranged on a pipeline connected with the adjacent capillary tube heat exchange units;

each of the capillary heat exchange units includes:

a first refrigerant pipe section (1);

the first end of the first liquid separation head (2) is communicated with the first end of the first refrigerant pipe section (1);

the first end of the capillary network (3) is communicated with the second end of the first liquid separation head (2);

the first end of the second liquid dividing head (4) is communicated with the second end of the capillary network (3);

the first end of the second refrigerant pipe section (5) is communicated with the second end of the second liquid separation head (4);

the second refrigerant pipe section (5) of one capillary heat exchange unit in two adjacent capillary heat exchange units is communicated with the first refrigerant pipe section (1) in the other capillary heat exchange unit, and the heating device is arranged on the second refrigerant pipe section (5);

after the refrigerant introduced from the second end of the first refrigerant pipe section (1) is distributed to the capillary pipe network (3) through the first liquid distribution head (2), the refrigerant in the capillary pipe network (3) is collected at one position through the second liquid distribution head (4) and is discharged through the second refrigerant pipe section (5).

2. The heat exchange pipeline according to claim 1, wherein after the refrigerant introduced from the second end of the second refrigerant pipe section (5) is distributed to the capillary network (3) through the second liquid distribution head (4), the refrigerant in the capillary network (3) is collected together through the first liquid distribution head (2) and discharged through the first refrigerant pipe section (1).

3. A heat exchange circuit according to claim 1, characterised in that the capillary network (3) comprises a plurality of individual capillaries.

4. A heat exchange circuit according to claim 1, wherein there are at least two of said capillary tube heat exchange units.

5. A heat exchange circuit according to claim 1, characterised in that said heating means comprise:

the refrigerant tank is communicated with the second refrigerant pipe section (5);

and the electric heating wire is arranged on the outer surface of the refrigerant tank.

6. A heat exchange circuit according to claim 1, characterised in that said heating means comprise:

and the electric heating wire is arranged on the outer surface of the second refrigerant pipe section (5).

7. A heat exchange system comprising a heat exchange line, characterized in that the heat exchange line is as claimed in any one of claims 1 to 6, and the heat exchange line is laid on the inner side of an indoor wall and/or floor.

8. The heat exchange system of claim 7, wherein a plurality of the capillary tube heat exchange units are arranged in series, the heat exchange system further comprising:

one end of the evaporator is communicated with the second end of the first refrigerant pipe section (1) of the capillary heat exchange unit positioned at the front end;

one end of the condenser is communicated with the second end of the second refrigerant pipe section (5) of the capillary heat exchange unit positioned at the tail end;

the compressor is arranged on a pipeline between the evaporator and the condenser and used for providing heat exchange refrigerants for the heat exchange system.

9. The heat exchange system of claim 8, wherein the heat exchange system has a heating mode and a cooling mode, and wherein a refrigerant flow direction of the heat exchange line in the heating mode is opposite to a refrigerant flow direction of the heat exchange line in the cooling mode.

10. An air conditioner comprising a heat exchange system, wherein the heat exchange system is as claimed in any one of claims 7 to 9.