Novel fresh air air-water heat exchange equipment

Abstract

The utility model discloses novel fresh air gas-water heat exchange equipment, relates to the field of waste heat utilization, and solves the problems that in the prior art, the temperature of high-temperature flue gas passing through a heat exchanger is high, and heat of the high-temperature flue gas cannot be effectively recycled through single heat exchange. A fresh air heat exchanger is installed on the side, close to the waste gas fan, in the box body, and a gas-water heat exchanger one-way air valve is installed on the side, away from the waste gas fan, in the box body. The fresh air is heated through the fresh air heat exchanger, warm water is heated through waste heat of high-temperature flue gas passing through the fresh air heat exchanger, heat recovery is carried out, and therefore the high-temperature flue gas is effectively utilized.

Description

Technical Field

[0001] The utility model relates to the field of waste heat utilization, in particular to a novel fresh air-water heat exchange device. Background Art

[0002] In recent years, coating has become an important part of modern product manufacturing process, and various energy consumption is relatively large. Coating is a systematic project. In the coating drying system, a burner is generally used to burn natural gas to provide heat source. Because the flue gas temperature generated by the burner flame is relatively high, the waste heat of the high-temperature flue gas after passing through the heat exchanger is also relatively high. By utilizing the waste heat of the high-temperature flue gas, the purpose of saving energy and investment can be achieved.

[0003] In the patent application with publication number CN217929928U, another waste heat recovery device for automobile painting production line is disclosed, including a shell, a waste heat recovery device is arranged inside the shell, a maintenance device is arranged on the front of the shell, the waste heat recovery device includes an air outlet pipe, the right side of the air outlet pipe is fixedly connected to the left side of the shell, the right side of the shell is fixedly installed with an air inlet pipe, the inside of the air inlet pipe and the air outlet pipe are both detachably installed with a filter screen, the inner bottom wall of the shell is fixedly installed with a motor, the output shaft of the motor is fixedly connected with a rotating shaft through a coupling, and the outer surface of the rotating shaft is fixedly installed with a fan blade. The waste heat recovery device for automobile painting production line achieves the purpose of recovering waste heat on the automobile painting production line by providing a waste heat recovery device, improves the utilization rate of heat, and reduces the waste of electric power resources, which has great economic benefits in reducing the production cost of the enterprise.

[0004] The above patent has a waste heat recovery device inside the outer shell, and the motor drives the rotating shaft and the fan blades to rotate, so that the heat enters the outer shell from the air inlet pipe and exchanges heat with the waste heat recovery device. However, the temperature of the high-temperature flue gas after passing through the heat exchanger is relatively high, and the heat of the high-temperature flue gas cannot be effectively recovered through a single heat exchange. Utility Model Content

[0005] The purpose of the utility model is to provide a new type of fresh air-water heat exchange equipment, which is used to solve the problem that the temperature of high-temperature flue gas after passing through the heat exchanger is high and the heat of the high-temperature flue gas cannot be effectively recovered after a single heat exchange.

[0006] The technical solution adopted by the utility model is as follows: a new type of fresh air gas-to-water heat exchange equipment, including a box body, one end of the box body is connected to the exhaust gas fan through a pipe, a fresh air heat exchanger is installed on the side of the box body close to the exhaust gas fan, and a gas-to-water heat exchanger one-way air valve is installed on the side of the box body away from the exhaust gas fan.

[0007] Furthermore, a partition is installed on the side of the fresh air heat exchanger, and an air-water heat exchange chamber is formed between the upper part of the partition and the inner wall of the box, and a hot air bypass chamber is formed between the lower part of the partition and the inner wall of the box. A hot air bypass chamber ventilation valve is installed on the side of the hot air bypass chamber close to the fresh air heat exchanger, and the air-water heat exchanger one-way air valve is installed in the air-water heat exchange chamber, and an air-water heat exchange chamber ventilation valve is installed on the side of the air-water heat exchange chamber close to the fresh air heat exchanger.

[0008] Furthermore, a one-way air valve is installed on the side of the air-water heat exchange chamber away from the ventilation valve of the air-water heat exchange chamber.

[0009] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0010] 1. The utility model heats the fresh air through the fresh air heat exchanger, and heats the warm water with the waste heat of the high-temperature flue gas through the fresh air heat exchanger, and performs heat recovery, thereby effectively utilizing the high-temperature flue gas;

[0011] 2. The utility model installs an air-water heat exchange chamber ventilation valve at the hot air bypass chamber and the air-water heat exchange chamber inlet. The air-water heat exchange chamber ventilation valve can control its opening according to the incoming water temperature, thereby controlling the high-temperature flue gas entering the air-water heat exchange chamber and avoiding excessive pressure in the one-way air valve of the air-water heat exchanger due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of the utility model when the ventilation valve of the air-water heat exchange chamber is fully opened;

[0013] Figure 2 This is a structural schematic diagram of the utility model when the ventilation valve of the air-water heat exchange chamber is half-open;

[0014] Figure 3 It is a structural schematic diagram of the utility model when the ventilation valve of the air-water heat exchange chamber is fully closed.

[0015] Description of reference numerals:

[0016] 1. Box body; 2. Fresh air heat exchanger; 3. High-temperature flue gas ventilation chamber; 4. Air-water heat exchange chamber; 5. Air-water heat exchange chamber ventilation valve; 6. Air-water heat exchanger; 7. One-way air valve; 8. Hot air bypass chamber; 9. Hot air bypass chamber ventilation valve. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1

[0020] Figure 1-Figure 3 As shown: a new type of fresh air gas-water heat exchange equipment, including a box body 1, one end of the box body 1 is connected to the exhaust gas fan through a pipeline, a fresh air heat exchanger 2 is installed on the side of the box body 1 close to the exhaust gas fan, and a gas-water heat exchanger one-way air valve 6 is installed on the side of the box body 1 away from the exhaust gas fan.

[0021] Among them, the two ends of the box body 1 are interconnected, the fresh air heat exchanger 2 is installed at the inlet of the box body 1, and the partition 10 is installed at the outlet of the box body 1. After the high-temperature flue gas is sent into the inlet of the box body 1 by the exhaust gas fan, it first exchanges heat with the fresh air heat exchanger 2 to heat the fresh air. After the temperature of the high-temperature flue gas is reduced by the fresh air heat exchanger 2, it exchanges heat with the one-way air valve 6 of the air-water heat exchanger to heat the water, thereby effectively utilizing the high-temperature flue gas. The high-temperature flue gas after two heat exchanges is discharged from the outlet of the box body 1.

[0022] Example 2

[0023] The difference between this embodiment and Embodiment 1 is that: since the incoming water temperature is uncertain, if the incoming water temperature is too high, the pressure in the one-way air valve 6 of the air-water heat exchanger will increase. Therefore, a partition 10 is installed on the side of the fresh air heat exchanger 2, and an air-water heat exchange chamber 4 is formed between the upper part of the partition 10 and the inner wall of the box body 1, and a hot air bypass chamber 8 is formed between the lower part of the partition 10 and the inner wall of the box body 1. A hot air bypass chamber ventilation valve 9 is installed on the side of the hot air bypass chamber 8 close to the fresh air heat exchanger 2, and the one-way air valve 6 of the air-water heat exchanger is installed in the air-water heat exchange chamber 4. An air-water heat exchange chamber ventilation valve 5 is installed on the side of the air-water heat exchange chamber 4 close to the fresh air heat exchanger 2, and the air-water heat exchange chamber ventilation valve 5 controls the opening according to the temperature of the water in the one-way air valve 6 of the air-water heat exchanger.

[0024] A high-temperature flue gas ventilation chamber 3 is formed between the ventilation valve 5 of the air-water heat exchange chamber, the ventilation valve 9 of the hot air bypass chamber and the inner wall of the box body 1 .

[0025] When the incoming water temperature is ≤85℃, the ventilation valve 5 of the air-water heat exchange chamber is controlled to be fully opened, and the ventilation valve 9 of the hot air bypass chamber is closed, and the high-temperature flue gas all passes through the one-way air valve 6 of the air-water heat exchanger;

[0026] When the incoming water temperature is 90℃≥>85℃, the ventilation valve 5 of the air-water heat exchange chamber and the ventilation valve 9 of the hot air bypass chamber are controlled to be half open, and part of the high-temperature flue gas passes through the one-way air valve 6 of the air-water heat exchanger;

[0027] When the incoming water temperature is ≥90°C, the ventilation valves 5 of the air-water heat exchange chamber are controlled to be completely closed, the ventilation valves 9 of the hot air bypass chamber are controlled to be completely opened, and the high-temperature flue gas is discharged from the hot air bypass chamber 8.

[0028] In order to prevent backflow, a one-way air valve 7 is installed on the side of the air-water heat exchange chamber 4 away from the air-water heat exchange chamber ventilation valve 5 .

[0029] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A new type of fresh air-water heat exchange equipment, characterized in that: It comprises a box body (1), one end of which is connected to an exhaust gas fan via a pipeline, a fresh air heat exchanger (2) is installed on the side of the box body (1) close to the exhaust gas fan, and an air-water heat exchanger one-way air valve (6) is installed on the side of the box body (1) away from the exhaust gas fan.

2. A novel fresh air-water heat exchange device according to claim 1, characterized in that: A partition (10) is installed on the side of the fresh air heat exchanger (2); an air-water heat exchange chamber (4) is formed between the upper part of the partition (10) and the inner wall of the box body (1); a hot air bypass chamber (8) is formed between the lower part of the partition (10) and the inner wall of the box body (1); a hot air bypass chamber ventilation valve (9) is installed on the side of the hot air bypass chamber (8) close to the fresh air heat exchanger (2); the air-water heat exchanger one-way air valve (6) is installed in the air-water heat exchange chamber (4); and an air-water heat exchange chamber ventilation valve (5) is installed on the side of the air-water heat exchange chamber (4) close to the fresh air heat exchanger (2).

3. A novel fresh air-water heat exchange device according to claim 2, characterized in that: A one-way air valve (7) is installed on the side of the air-water heat exchange chamber (4) away from the air-water heat exchange chamber ventilation valve (5).

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