CN-122015538-A - Air heat exchanger and preparation method thereof

CN122015538ACN 122015538 ACN122015538 ACN 122015538ACN-122015538-A

Abstract

An air heat exchanger and a preparation method thereof. The air heat exchanger includes a honeycomb plate and heat exchange tubes. The honeycomb plate comprises a plurality of air holes penetrating along a first direction and mounting grooves positioned on at least one surface arranged along the first direction, wherein the mounting grooves extend along a second direction perpendicular to the first direction. The heat exchange tube comprises a heat exchange tube which is positioned in the mounting groove. The air heat exchanger comprises a honeycomb plate and heat exchange tubes, wherein part of the heat exchange tubes penetrate through the honeycomb plate and are in close contact with the honeycomb plate. The honeycomb plate provides huge heat exchange area in unit volume, and combines the vertical penetrating design of the heat exchange tubes to create an extremely short heat conduction path, so that the volume of the heat exchanger can be reduced by more than 30% compared with the traditional fin tube type heat exchanger under the same heat exchange amount, and the real efficient compactness is realized.

Inventors

WANG KAIJIAN
LIU BAOLIN
WANG XIAOYAN
ZHOU WENJIE
WANG ZHEHAO
LIU DONGWEI

Assignees

浙江炽昇热泵有限公司
浙江师范大学

Dates

Publication Date: 20260512
Application Date: 20251231

Claims (10)

1. An air heat exchanger, comprising: the honeycomb plate comprises a plurality of air holes penetrating along a first direction and mounting grooves positioned on at least one surface arranged along the first direction, wherein the mounting grooves extend along a second direction perpendicular to the first direction; The heat exchange tube comprises a heat exchange tube, and the heat exchange tube is positioned in the mounting groove.
2. The air heat exchanger as recited in claim 1 wherein at least half of the heat exchange tubes in the circumferential direction are located in the mounting groove.
3. The air heat exchanger according to claim 1, wherein the mounting groove has an opening size larger than an in-groove size, or the mounting groove is omega-shaped.
4. The air heat exchanger according to claim 1, wherein the honeycomb plate is an aluminum honeycomb plate and/or the air holes are hexagonal in cross-sectional shape taken perpendicular to the first direction, and/or the heat exchanging tubes are copper tubes.
5. The air heat exchanger according to any one of claims 1 to 4, wherein the heat exchange tube further comprises a liquid inlet tube and a liquid outlet tube, wherein The liquid inlet pipe and the liquid outlet pipe are respectively positioned at two sides of the honeycomb plate, and a plurality of heat exchange pipes are connected in parallel between the liquid inlet pipe and the liquid outlet pipe; Or the liquid inlet pipe and the liquid outlet pipe are positioned on the same side of the honeycomb plate, the heat exchange pipe also comprises a transfer pipe positioned on the other side of the honeycomb plate, part of the heat exchange pipes are connected in parallel between the liquid inlet pipe and the transfer pipe, and the other part of the heat exchange pipes are connected in parallel between the liquid outlet pipe and the transfer pipe; or, the liquid inlet pipe and the liquid outlet pipe are respectively positioned at two sides of the honeycomb plate, the heat exchange pipe further comprises a liquid separator connected with the liquid inlet pipe, and a plurality of heat exchange pipes are connected between the liquid separator and the liquid outlet pipe in parallel.
6. The preparation method of the air heat exchanger is characterized by comprising the following steps: forming pre-pressing grooves on at least one surface of the folded honeycomb plates, wherein the at least one surface of the folded honeycomb plates is arranged along a first direction, the first direction is perpendicular to the folding direction, and the pre-pressing grooves extend along the folding direction and penetrate through the pre-pressing grooves; expanding the honeycomb plate, forming air holes penetrating along the first direction on the honeycomb plate, and deforming the pre-pressing groove into a mounting groove penetrating along the expanding direction, wherein the mounting groove is omega-shaped; Placing a heat exchange tube in the mounting groove; Expanding the heat exchange tube or welding the heat exchange tube and the honeycomb plate so as to enable the heat exchange tube to be in close contact with the honeycomb plate.
7. The method for manufacturing an air heat exchanger according to claim 6 wherein said pre-pressing groove and said mounting groove have different sectional shapes, and wherein said mounting groove has a sectional shape conforming to a part of the sectional shape of said heat exchanging tube.
8. The preparation method of the air heat exchanger is characterized by comprising the following steps: The honeycomb plate is provided with air holes penetrating along the first direction, at least one surface of the honeycomb plate, which is arranged along the first direction, is pre-pressed to form a mounting groove, and the opening size of the mounting groove is larger than the size in the groove; Placing a heat exchange tube in the mounting groove; Welding the heat exchange tube and the honeycomb panel so that the heat exchange tube is in close contact with the honeycomb panel.
9. The method for producing an air heat exchanger according to claim 8 wherein said heat exchanging tube is placed in said installation groove in a direction perpendicular to said surface or said heat exchanging tube is passed through said installation groove in a direction of development; and/or the mounting groove is configured to be able to accommodate at least half of the heat exchange tube in the circumferential direction.
10. The method for manufacturing an air heat exchanger according to any one of claims 6 to 9, further comprising the step of cladding a frame on the edge of the honeycomb panel before or after the heat exchange tube is placed in the installation groove; Or, the method also comprises the steps of connecting a liquid inlet pipe and a liquid outlet pipe at the end part of the heat exchange pipe, wherein The liquid inlet pipe is connected to the same end side of all the heat exchange pipes along the unfolding direction, and the liquid outlet pipe is connected to the other end side of all the heat exchange pipes along the unfolding direction; Or, connecting a liquid distributor at the same end side of all the heat exchange tubes along the unfolding direction, connecting a liquid inlet pipe at the inlet of the liquid distributor, and connecting a liquid outlet pipe at the other end side of all the heat exchange tubes along the unfolding direction; or connecting the liquid inlet pipe to a part of the heat exchange pipes at the same end side of all the heat exchange pipes in the unfolding direction, connecting the liquid outlet pipe to other heat exchange pipes, and connecting the transfer pipe at the other end side of all the heat exchange pipes in the unfolding direction.

Description

Air heat exchanger and preparation method thereof Technical Field The invention relates to the technical field of heat exchange, in particular to an air heat exchanger and a preparation method thereof. Background The air heat exchanger is widely applied to air conditioning, ventilation, waste heat recovery and other systems and is used for realizing heat exchange between air and fluid (such as refrigerant, water and the like). In the traditional fin-tube heat exchanger, fins are sleeved on the heat exchange tubes in series to increase the heat exchange area of the air side. However, the structure has the problems of larger air flow resistance, limited heat exchange efficiency, larger contact thermal resistance between the fins and the pipe wall and the like. In view of the above, the present invention provides an improved air heat exchanger and a method for manufacturing the same, so as to solve one of the above-mentioned problems. Disclosure of Invention The invention aims to provide an air heat exchanger with compact structure, high heat exchange efficiency and small contact thermal resistance and a preparation method thereof, so as to solve the defects in the prior art. In order to achieve the above purpose, the invention adopts the following technical scheme: The invention provides an air heat exchanger which comprises a honeycomb plate, heat exchange tubes and a heat exchange tube, wherein the honeycomb plate comprises a plurality of air holes penetrating in a first direction and mounting grooves arranged on at least one surface of the honeycomb plate in the first direction, the mounting grooves extend in a second direction perpendicular to the first direction, and the heat exchange tubes comprise heat exchange tubes which are arranged in the mounting grooves. In an alternative embodiment, at least half of the heat exchange tube in the circumferential direction is located in the mounting groove. In alternative embodiments, the mounting groove has an opening size greater than the in-groove size, or the mounting groove is omega-shaped. In alternative embodiments, the honeycomb panel is an aluminum honeycomb panel, and/or the air holes have a hexagonal cross-sectional shape taken perpendicular to the first direction, and/or the heat exchange tubes are copper tubes. In an alternative embodiment, the heat exchange tube further comprises a liquid inlet tube and a liquid outlet tube. The liquid inlet pipe and the liquid outlet pipe are respectively positioned at two sides of the honeycomb plate, and a plurality of heat exchange pipes are connected in parallel between the liquid inlet pipe and the liquid outlet pipe. Or, the liquid inlet pipe and the liquid outlet pipe are positioned on the same side of the honeycomb plate, the heat exchange pipe also comprises a transfer pipe positioned on the other side of the honeycomb plate, part of the heat exchange pipes are connected in parallel between the liquid inlet pipe and the transfer pipe, and the other part of the heat exchange pipes are connected in parallel between the liquid outlet pipe and the transfer pipe. Or, the liquid inlet pipe and the liquid outlet pipe are respectively positioned at two sides of the honeycomb plate, the heat exchange pipe further comprises a liquid separator connected with the liquid inlet pipe, and a plurality of heat exchange pipes are connected between the liquid separator and the liquid outlet pipe in parallel. The invention also provides a preparation method of the air heat exchanger, which comprises the steps of forming pre-pressing grooves on at least one surface of a folded honeycomb plate, wherein the surface of the folded honeycomb plate is arranged along a first direction, the first direction is perpendicular to the folding direction, the pre-pressing grooves extend along the folding direction and penetrate through the honeycomb plate, expanding the honeycomb plate, forming air holes penetrating along the first direction on the honeycomb plate, deforming the pre-pressing grooves into mounting grooves penetrating along the expanding direction, the mounting grooves are omega-shaped, placing a heat exchange tube in the mounting grooves, expanding the heat exchange tube, or welding the heat exchange tube and the honeycomb plate, so that the heat exchange tube is in close contact with the honeycomb plate. In an alternative embodiment, the pre-compression groove is different from the cross-sectional shape of the installation groove, which corresponds to a portion of the cross-sectional shape of the heat exchange tube. In a third aspect, the invention also provides a method for manufacturing an air heat exchanger, comprising the steps of providing a honeycomb panel with air holes penetrating along a first direction, pre-pressing the honeycomb panel on at least one surface arranged along the first direction to form mounting grooves, wherein the opening size of each mounting groove is larger than the size in each groove, placing h