CN204666000U - Horizontal-flow type multi-medium heat exchanger - Google Patents

Abstract

The utility model relates to an advection multi-media heat exchanger, the heat exchanger includes at least two flat tube groups, a first liquid collecting pipe and a second liquid collecting pipe; each of the flat tube groups includes from top to bottom The upper flat tube, the middle flat tube and the lower flat tube that are in contact with each other in turn, wherein both the upper flat tube and the lower flat tube flow the first medium, and the middle flat tube flows the second medium; the group between the two flat tube groups is closed The medium flow channel is used to flow the third medium; the ends on the same side of each of the upper flat tubes and the lower flat tubes are in communication with one of the first liquid collection pipes, and the same side of each of the middle flat tubes The ends of the sides are all communicated with a second liquid collecting pipe. The utility model realizes the simultaneous heat exchange of three media, and the structure of the heat exchanger is more compact and the heat exchange efficiency is higher due to the structure of the parallel circulation channel.

Description

A Straight Flow Multimedia Heat Exchanger

technical field

The utility model relates to the technical field of heat exchanger manufacture, in particular to an advection multi-media heat exchanger.

Background technique

With the development of industrial technology, more and more occasions require multiple media to exchange heat at the same time, such as dual heat source heat pumps, natural cooling systems, etc. If only a general two-medium heat exchanger is used, a large space and initial investment are required. Fin-tube type three-medium compound heat exchanger (CN200710054879.8) proposes a fin-tube type three-medium heat exchanger, which can realize simultaneous heat exchange of three fluids. However, this type of heat exchanger has a small heat exchange area per unit volume, making it difficult to achieve a compact structure and high heat exchange efficiency.

Utility model content

The technical problem to be solved by the utility model is to realize the simultaneous heat exchange of the three media, and at the same time make the structure of the heat exchanger more compact and the heat exchange efficiency higher.

In order to solve the above technical problems, the utility model discloses an advection multi-media heat exchanger, the heat exchanger includes at least two flat tube groups, a first liquid collecting pipe and a second liquid collecting pipe;

Each of the flat tube groups includes an upper flat tube, a middle flat tube and a lower flat tube which are sequentially contacted from top to bottom, wherein both the upper flat tube and the lower flat tube flow the first medium (the first medium flow channel), and the middle flat tube The tube flows the second medium (the second medium flow channel); between the two flat tube groups is a medium flow channel closed around and not closed at both ends, which is used to flow the third medium (the third medium flow channel); each The ends on the same side of each of the upper flat tubes and the lower flat tubes are in communication with a first liquid collecting pipe, and the ends on the same side of each of the middle flat tubes are connected to a second liquid collecting pipe. The tube is connected.

Preferably, the lengths of the upper flat tube and the lower flat tube are equal.

Preferably, the length of the upper flat tube is shorter than the length of the middle flat tube.

Preferably, the first liquid collection pipe and the second liquid collection pipe located on the same side are arranged in parallel in the length direction of the flat tube group, and the second liquid collection pipe is located at the side of the first liquid collection pipe. On the outside, the flat tube passes through the first liquid collecting pipe to communicate with the second liquid collecting pipe.

Preferably, in the flow channel formed by the upper flat tube, the middle flat tube, and the lower flat tube and the medium flow channel, adjacent channels are parallel to each other.

Preferably, a plurality of support columns are arranged between two adjacent flat tube groups for supporting the medium flow channel.

Preferably, the support column is a support warp.

Preferably, two adjacent support flaps form a triangle with the top surface or the ground of the medium flow channel.

Preferably, the first medium is a liquid or a gas-liquid medium; the second medium is a liquid or a gas-liquid medium; and the third medium is a gas or a mixed medium of gas and spray liquid.

Preferably, the heat exchanger further includes control valves, which are respectively arranged at the medium inlets of the upper flat tubes, middle flat tubes, lower flat tubes and medium flow passages, and are used to control the temperature of the medium for heat exchange. Perform heat transfer control.

The above-mentioned technical solution of the utility model has the following advantages: the simultaneous heat exchange of the three media is realized, and the structure of the heat exchanger is more compact due to the structure of the parallel circulation channel, and the heat exchange efficiency is higher.

Description of drawings

Fig. 1 is the structural representation of a kind of advection type multi-media heat exchanger of the present utility model;

Fig. 2 is a top view of an advection type multi-media heat exchanger of the present invention.

Detailed ways

The specific implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

Fig. 1 is a structural schematic diagram of an advection type multi-media heat exchanger of the present invention, and Fig. 2 is a top view of an advection type multi-media heat exchanger of the present invention; the heat exchanger includes at least two flat tubes group, the first liquid collection pipe 5 and the second liquid collection pipe 6; each of the flat pipe groups includes the upper flat pipe 1, the middle flat pipe 2 and the lower flat pipe 3 which are in close contact with each other from top to bottom, wherein the upper flat pipe Both the tube 1 and the lower flat tube 3 are the first medium flow channel, and the middle flat tube 2 is the second medium flow channel; the group between the two flat tube groups forms the third medium flow channel (closed around, with no two ends). Closed pipeline); the ends on the same side of each of the upper flat tubes 1 and the lower flat tubes 3 communicate with a first liquid collector 5, and the ends on the same side of each of the middle flat tubes 2 All of them are in communication with one of the second collecting pipes 6 . The first liquid collection pipe and the second liquid collection pipe at both ends of the flat tube group serve as the inlet and outlet of the medium respectively.

Further, the upper flat tube 1 and the lower flat tube 3 have the same length. The length of the upper flat tube 1 is smaller than the length of the middle flat tube 2 . The first liquid collection pipe 5 and the second liquid collection pipe 6 on the same side are arranged in parallel in the length direction of the flat tube group, and the second liquid collection pipe 6 is located at the first liquid collection pipe 5 The outer side of the flat tube 2 passes through the first liquid collecting pipe 5 to communicate with the second liquid collecting pipe 6 .

Further, a plurality of support columns are arranged between two adjacent flat tube groups to form the third medium flow channel.

Further, the support column is a support warp 4, and two adjacent support warps 4 form a triangle with the top surface or the ground of the third medium flow channel.

Further, the upper flat tube, the middle flat tube and the lower flat tube are in parallel contact, and the first medium flow channel, the second medium flow channel and the third medium flow channel are arranged in parallel.

Further, the medium of the first medium flow channel is liquid or gas-liquid two-phase medium; the medium of the first medium flow channel is liquid or gas-liquid two-phase medium; the medium of the third medium flow channel is gas Or the mixed medium of gas and spray liquid.

Further, the heat exchanger also includes control valves, which are respectively arranged at the medium inlets of the first medium flow channel, the second medium flow channel and the third medium flow channel, for exchanging heat medium for heat exchange control. The first medium in the first medium flow channel can choose to exchange heat with the other two media in the second medium flow channel and the third medium flow channel separately or simultaneously: with the second medium in the second medium flow channel alone When exchanging heat, stop the circulation of the third medium in the third medium flow channel (usually close the fan or the corresponding control valve); when exchanging heat with the third medium in the third medium flow channel alone, close the second medium Channels for the second medium within the flow channels; all flow channels are open for simultaneous heat exchange with both media.

The utility model can be used for simultaneous heat exchange between one kind of hot fluid and two kinds of cold fluids (or one kind of cold fluid and two kinds of hot fluids). Since the system has a parallel flow microchannel structure, it can exchange heat compared with ordinary heat exchangers. Larger coefficients are more compact.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (10)

1. A flat-flow multi-media heat exchanger, characterized in that the heat exchanger comprises at least two flat tube groups, a first header and a second header; Each of the flat tube groups includes an upper flat tube, a middle flat tube and a lower flat tube that are sequentially contacted from top to bottom, wherein both the upper flat tube and the lower flat tube flow the first medium, and the middle flat tube flows the second medium; Between each of the flat tube groups is a medium flow channel that is closed around and not closed at both ends, for the flow of the third medium; the ends on the same side of each of the upper flat tubes and the lower flat tubes are connected with one of the said flat tubes The first liquid collecting pipe is connected, and the ends of each of the flat tubes on the same side are connected with one of the second liquid collecting pipes. 2. The heat exchanger according to claim 1, characterized in that the upper flat tube and the lower flat tube are equal in length. 3. The heat exchanger according to claim 2, wherein the length of the upper flat tube is shorter than the length of the middle flat tube. 4. The heat exchanger according to claim 3, characterized in that, the first liquid collecting pipe and the second liquid collecting pipe located on the same side are arranged in parallel in the length direction of the flat tube group, and the The second liquid collection pipe is located outside the first liquid collection pipe, and the flat tube passes through the first liquid collection pipe to communicate with the second liquid collection pipe. 5 . The heat exchanger according to claim 4 , wherein, among the flow channels formed by the upper flat tubes, middle flat tubes, and lower flat tubes and the medium flow channels, adjacent channels are parallel to each other. 6. The heat exchanger according to claim 5, wherein a plurality of support columns are arranged between two adjacent flat tube groups for supporting the medium flow channel. 7. The heat exchanger according to claim 6, characterized in that, the support columns are support fins. 8. The heat exchanger according to claim 7, wherein two adjacent supporting fins form a triangle with the top surface or the ground of the medium flow channel. 9. The heat exchanger according to claim 8, wherein the first medium is a liquid or a gas-liquid two-phase medium; the second medium is a liquid or a gas-liquid two-phase medium; the third medium It is a mixed medium of gas or gas and spray liquid. 10. The heat exchanger according to any one of claims 1 to 9, characterized in that, the heat exchanger further comprises a control valve, and the control valves are respectively arranged on the upper flat tube, the middle flat tube, the lower flat tube The flat tube and the medium inlet of the medium flow channel are used to control the heat exchange of the medium for heat exchange.