Gas-gas heat exchanger

Abstract

The utility model relates to a gas-gas heat exchanger, which belongs to the technical field of heat exchangers and comprises an upper fresh air box and a lower fresh air box which are vertically arranged at an interval, and the upper fresh air box and the lower fresh air box are fixedly connected with each other through a plurality of connecting rods, so that a hot waste gas channel is formed between the upper fresh air box and the lower fresh air box; a plurality of fresh air guide pipes are vertically arranged between the upper fresh air box and the lower fresh air box, the top ends of the fresh air guide pipes communicate with the upper fresh air box, and the bottom ends of the fresh air guide pipes communicate with the lower fresh air box to form a cold fresh air channel; the fresh air guide pipes are horizontally arranged at intervals in a staggered mode so that air passing gaps can be formed around the fresh air guide pipes, and the heat exchanger is easy to clean and high in heat exchange speed.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field especially relates to gas gas heat exchanger. BACKGROUND

[0002] Traditional gas gas heat exchanger often adopts the layout that hot waste gas goes in the pipe and fresh air goes outside the pipe, and the oil stains and other dirt carried by the hot waste gas will remain in the pipe, so the pipe cleaning is very inconvenient. UTILITY MODEL CONTENTS

[0003] The utility model aims at improving the above-mentioned deficiencies of traditional gas gas heat exchanger.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] The gas gas heat exchanger comprises upper fresh air box and lower fresh air box arranged at a distance from each other, and the upper fresh air box and the lower fresh air box are fixedly connected with each other through a plurality of connecting rods to form a hot waste gas channel between the upper fresh air box and the lower fresh air box; a plurality of fresh air guide pipes are arranged between the upper fresh air box and the lower fresh air box, the plurality of fresh air guide pipes are vertically arranged and the top end of each fresh air guide pipe is communicated with the upper fresh air box and the bottom end of each fresh air guide pipe is communicated with the lower fresh air box to form a fresh air channel; and the plurality of fresh air guide pipes are horizontally arranged at a distance from each other and staggered to form a wind passing gap around each fresh air guide pipe.

[0006] As a preferred scheme, the upper fresh air box and the lower fresh air box are both horizontally arranged flat square box bodies.

[0007] As a preferred scheme, the four corners of the upper fresh air box and the lower fresh air box are fixedly connected with each other through the connecting rods.

[0008] As a preferred scheme, the plurality of fresh air guide pipes are divided into two rows along the X-axis direction.

[0009] As a preferred scheme, the fresh air guide pipes in the same row are arranged at a distance from each other along the Y-axis.

[0010] As a preferred scheme, the fresh air guide pipes in different rows are staggered along the X-axis.

[0011] As a preferred scheme, all the fresh air guide pipes are flat round pipes with the same specification.

[0012] As a preferred scheme, the length-diameter ratio of the fresh air guide pipes is (10-5):1.

[0013] As a preferred scheme, the length diameter of all the fresh air guide pipes is parallel to the X-axis to take the short arc surface as the hot waste gas windward surface.

[0014] The oil stains and other dirt carried by the hot waste gas cannot enter the inside of the fresh air duct, but adhere to the outer wall of the fresh air duct; in addition, the fresh air ducts of the utility model are vertically arranged, and the oil stains and other dirt can be cleaned by flushing the outer wall of the fresh air duct, without the need of disassembling the fresh air duct to clean the inside, so that the cleaning work is convenient and time-saving. Furthermore, the fresh air ducts of the utility model are all flat tubes, which is beneficial to increasing the heat exchange speed between the fresh cold air flowing in the tube and the hot waste gas flowing outside the tube. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 A structure schematic view of the gas-gas heat exchanger disclosed by the utility model is shown in the figure.

[0016] Fig. 2 A transverse sectional view of the gas-gas heat exchanger disclosed by the utility model is shown in the figure.

[0017] Fig. 3 A structure schematic view of the fresh air duct adopted by the utility model is shown in the figure. DETAILED DESCRIPTION

[0018] The utility model will be explained in combination with the drawings and specific embodiments.

[0019] As Figs. 1-3 The gas-gas heat exchanger comprises upper and lower fresh air boxes 1 and 2 which are arranged at a distance from each other, the upper and lower fresh air boxes 1 and 2 are both horizontally arranged flat square box bodies, the four corners of the two are fixedly connected with each other through connecting rods 3, so as to form a hot waste gas channel between the two; a plurality of fresh air ducts 4 are further arranged between the upper and lower fresh air boxes 1 and 2, the plurality of fresh air ducts 4 are vertically arranged and the top ends thereof are communicated with the upper fresh air box 1 and the bottom ends thereof are communicated with the lower fresh air box 2, so as to form a fresh cold air channel; the upper fresh air box 1 is provided with a fresh air inlet or a fresh air outlet, and correspondingly, the lower fresh air box 2 is provided with a fresh air outlet or a fresh air inlet.

[0020] The plurality of fresh air ducts 4 are divided into two rows along the X axis, the fresh air ducts 4 in the same row are arranged at a distance from each other along the Y axis, and the fresh air ducts 4 in different rows are all arranged staggeredly along the X axis, so that the plurality of fresh air ducts 4 are all horizontally arranged at a distance from each other and staggeredly arranged, thereby forming air passing gaps around each fresh air duct 4.

[0021] All the fresh air ducts 4 are flat circular tubes with the same specification and the ratio of length to short diameter is (10-5):1, and the long diameters of all the fresh air ducts 4 are arranged in parallel with the X axis, so as to take the short arc surface of each as a hot waste gas windward surface.

Claims

1. A gas-to-gas heat exchanger, characterized by: The application relates to a heat-exchange device for heat-exchange between hot exhaust gas and fresh air, which comprises an upper fresh air box (1) and a lower fresh air box (2) arranged vertically, the upper fresh air box (1) and the lower fresh air box (2) are fixedly connected through a plurality of connecting rods (3) to form a hot exhaust gas channel, a plurality of fresh air guide pipes (4) are arranged between the upper fresh air box (1) and the lower fresh air box (2), the fresh air guide pipes (4) are vertically arranged and the top ends of the fresh air guide pipes (4) are communicated with the upper fresh air box (1) and the bottom ends of the fresh air guide pipes (4) are communicated with the lower fresh air box (2) to form a fresh air channel, the fresh air guide pipes (4) are horizontally arranged and staggered to form air gaps around the fresh air guide pipes (4).

2. The gas-to-gas heat exchanger of claim 1, wherein: The upper fresh air box (1) and the lower fresh air box (2) are horizontally arranged flat square box bodies.

3. The gas-to-gas heat exchanger of claim 2, wherein: The upper fresh air box (1) and the lower fresh air box (2) are fixedly connected through the connecting rods (3) at four corners.

4. The gas-to-gas heat exchanger of claim 1, wherein: The fresh air guide pipes (4) are divided into two rows along the X axis.

5. The gas-to-gas heat exchanger according to claim 4, characterized in that: The fresh air guide pipes (4) in the same row are arranged along the Y axis.

6. The gas-to-gas heat exchanger according to claim 5, characterized in that: The fresh air guide pipes (4) in different rows are arranged along the X axis.

7. The gas-to-gas heat exchanger according to any of claims 4-6, characterized in that: The fresh air guide pipes (4) are flat circular pipes with the same specification.

8. The gas-to-gas heat exchanger according to claim 7, characterized in that: The ratio of the length to the diameter of the fresh air guide pipes (4) is (10-5):

1.

9. The gas-to-gas heat exchanger of claim 7, wherein: The long diameters of the fresh air guide pipes (4) are parallel to the X axis, and the short arc surfaces of the fresh air guide pipes (4) are used as the hot exhaust gas windward surfaces.

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