Novel heat exchanger with heat exchange area within fixed range for refrigerating and ice-making through tail gas of vehicles and ships

Abstract

The invention relates to a novel heat exchanger with a heat exchange area within a fixed range for refrigerating and ice-making through tail gas of vehicles and ships, and belongs to the technical field of refrigeration. A tail gas inlet pipe is arranged on the left side of the box body, a flow equalizing structure is arranged in the box body, an S-shaped flow guide pipe is arranged on the right side of the flow equalizing structure, a flow inlet and a flow outlet are formed in the S-shaped flow guide pipe, a backflow structure is arranged on the box body, and an exhaust pipe is further arranged on the right side of the box body. The tail gas heat exchange device has the beneficial effects that when the tail gas heat exchange device is used, tail gas of vehicles and ships passes through the tail gas inlet pipe, is subjected to flow equalization through the flow equalization plate and is diffused to the periphery of the S-shaped guide pipe flow, and a medium to be subjected to heat exchange is introduced into the S-shaped guide pipe, so that heat exchange treatment is performed through the tail gas and the heat exchange medium, and high-temperature flue gas subjected to heat exchange is reused through the backflow structure; and meanwhile, according to the temperature of the tail gas of the box body, the flowing speed of a medium in the S-shaped flow guide pipe is adjusted through the control screen, and the heat exchange efficiency within a fixed range is achieved.

Description

Technical Field

[0001] The invention relates to a novel heat exchanger with a fixed heat exchange area for refrigerating and making ice from vehicle and ship exhaust gas, belonging to the technical field of refrigeration. Background Art

[0002] In daily production and life, the exhaust gas of vehicles and ships is directly discharged into the air, which not only causes certain air pollution, but also wastes energy. Collecting the waste heat of vehicle and ship exhaust gas for refrigeration is a direction of industry development. In order to make good use of the waste heat in vehicle and ship exhaust gas, refrigeration equipment for vehicle and ship exhaust waste heat has appeared in the industry. The above equipment uses the waste heat of exhaust gas as the driving source to achieve refrigeration through ammonia absorption refrigeration. Through the heat-to-cold conversion of the ammonia absorption refrigeration unit, the heat of the exhaust gas is effectively reused, which greatly saves energy consumption and significantly increases economic and social benefits.

[0003] In the refrigeration equipment for exhaust waste heat of vehicles and ships, the heat exchanger is an important component. The heat exchanger is generally provided with multiple channels, which can be used for liquid-liquid and liquid-gas heat exchange. The existing heat exchangers have the following problems in use: 1. Sometimes the temperature of the exhaust waste heat after heat exchange is still relatively high, and it cannot be recycled and reused, resulting in heat waste; 2. The heat exchange range of the existing heat exchanger is not fixed, resulting in low heat exchange efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a new type of heat exchanger with a fixed heat exchange area for refrigerating and making ice for vehicle and ship exhaust gas, so as to solve the problems faced in the industry.

[0005] In order to solve the above technical problems, the present invention is implemented through the following technical solutions: a new type of heat exchanger with a fixed heat exchange area for refrigerating and ice-making exhaust gas from vehicles and ships, the heat exchanger comprising a box body with a hollow interior and an open front, an exhaust gas intake pipe is arranged on the left side of the box body, the exhaust gas intake pipe passes through from the left side outside to the inside of the box body, a flow equalizing structure is arranged in the box body, an S-shaped guide pipe is arranged on the right side of the flow equalizing structure, the S-shaped guide pipe is provided with an inlet and an outlet, the inlet and the outlet are both arranged on the right side of the box body, a reflux structure is arranged on the box body, and an exhaust pipe is also arranged on the right side of the box body.

[0006] Preferably, the flow balancing structure comprises a vertically placed flow balancing plate, on which a plurality of flow balancing holes are arranged, and the flow balancing holes penetrate from the left side to the right side of the flow balancing plate.

[0007] Preferably, the reflux structure comprises a reflux pipe, one end of which is connected to the exhaust pipe, and the other end of which is connected to the exhaust gas intake pipe, and a shut-off one-way valve is provided on the reflux pipe.

[0008] Preferably, a side stop valve is provided on the exhaust pipe.

[0009] Preferably, a temperature sensor is also provided in the exhaust pipe.

[0010] Preferably, a plurality of temperature sensors are arranged in the box.

[0011] Preferably, a filter screen is also provided on the exhaust gas intake pipe.

[0012] Preferably, a control panel is also provided on the right side of the box.

[0013] Preferably, a box door is provided on the front of the box body, and a handle is provided on the box door.

[0014] Compared with the prior art, the advantages of the present invention are as follows: when in use, the exhaust gas of vehicles and ships passes through the exhaust gas intake pipe, and is evenly distributed to the surroundings of the S-shaped duct flow through the flow equalizer, and the medium to be heat exchanged is introduced into the S-shaped guide pipe, so that heat exchange treatment is carried out by the exhaust gas and the heat exchange medium, and the high-temperature flue gas after heat exchange is reused through the reflux structure to improve the utilization rate of the exhaust gas. At the same time, according to the temperature of the exhaust gas of the box, the flow speed of the medium in the S-shaped guide pipe is adjusted through the control panel to achieve the efficiency of heat exchange within a fixed range. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the internal structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the structure after the door of this box is closed.

[0018] In the figure: 1. Box body; 101. Control panel; 102. Box door; 103. Handle; 2. Exhaust intake pipe; 201. Filter; 3. Flow equalization structure; 301. Flow equalization plate; 302. Flow equalization hole; 4. S-shaped guide pipe; 401. Inlet; 402. Outlet; 5. Reflux structure; 501. Reflux pipe; 502. Stop check valve; 6. Exhaust pipe; 601. Side stop valve; 7. Temperature sensor. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments: like Figure 1 and Figure 2A new type of heat exchanger with a fixed heat exchange area for refrigerating and ice-making exhaust gas from vehicles and ships is shown. The heat exchanger includes a box body 1 which is hollow inside and open at the front. An exhaust gas intake pipe 2 is arranged on the left side of the box body 1. The exhaust gas intake pipe 2 passes through the left side of the box body 1 to the inside. A flow equalizing structure 3 is arranged in the box body 1. An S-shaped guide pipe 4 is arranged on the right side of the flow equalizing structure 3. The S-shaped guide pipe 4 is provided with an inlet 401 and an outlet 402. The inlet 401 and the outlet 402 are both arranged on the right side of the box body 1. A reflux structure 5 is arranged on the box body 1. An exhaust pipe 6 is also arranged on the right side of the box body 1.

[0020] In order to make the exhaust gas flow evenly, the flow equalizing structure 3 further includes a vertically placed flow equalizing plate 301, and a plurality of flow equalizing holes 302 are arranged on the flow equalizing plate 301, and the flow equalizing holes 302 pass through the left side of the flow equalizing plate 301 to the right side.

[0021] In order to improve the utilization rate of exhaust gas, the reflow structure 5 further includes a reflow pipe 501, one end of which is connected to the exhaust pipe 6, and the other end of which is connected to the exhaust gas intake pipe 2, and a shut-off one-way valve 502 is provided on the reflow pipe 501.

[0022] In order to control the flow of exhaust gas, a side stop valve 601 is further provided on the exhaust pipe 6 .

[0023] In order to detect the temperature of the exhaust gas, a temperature sensor 7 is further provided in the exhaust pipe 6 .

[0024] In order to detect the exhaust gas temperature in the box in real time, a plurality of temperature sensors 7 are further provided in the box 1 .

[0025] In order to filter the exhaust gas, a filter screen 201 is further provided on the exhaust gas intake pipe 2 .

[0026] In order to control the entire system, a control panel 101 is further provided on the right side of the box 1 .

[0027] In order to facilitate maintenance of the box body 1 , a box door 102 is further provided on the front of the box body 1 , and a handle 103 is further provided on the box door 102 .

[0028] When in use, the medium to be heat exchanged is passed from the inlet 401 into the S-shaped guide tube for circulation and flows out from the outlet 402, and the exhaust gas of vehicles and ships is passed from the exhaust gas intake pipe 2 into the box 1. A filter net 201 is set on the exhaust gas intake pipe 2. The exhaust gas of vehicles and ships can be filtered through the filter net 201 to prevent impurities in the exhaust gas from entering the box 1. After the exhaust gas enters the box 1, it first passes through the flow equalizing plate 301, and the exhaust gas is evenly distributed through the flow equalizing holes 302 on the flow equalizing plate 301 to better achieve heat exchange.

[0029] After being evenly distributed, the exhaust gas will flow around the S-shaped flow guide pipe 4, thereby heating the heat exchange medium in the S-shaped flow guide pipe 4 to achieve the purpose of heat exchange.

[0030] In this patent, the temperature of the exhaust gas is detected at any time through multiple temperature sensors 7. When the temperature of the exhaust gas discharged from the exhaust pipe 6 is still relatively high, the side stop valve 601 is started to close the channel of the exhaust pipe 6, and the stop check valve 502 is opened. At this time, the exhausted flue gas will enter the return pipe 501 and flow into the box 1 to realize the recycling of the flue gas and improve the utilization rate of the flue gas.

[0031] In this patent, the temperature of the detected exhaust gas is transmitted to the control panel 101 in real time. The control panel 101 adjusts the flow rate of the heat exchange medium in the S-shaped flow guide 4 in real time according to the temperature of the exhaust gas, so as to maximize the heat exchange efficiency in a fixed area. In this patent, the heat exchange area of ​​the S-shaped flow guide 4 is greater than or equal to 50 square meters and less than or equal to 120 square meters.

[0032] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A new type of heat exchanger with a fixed heat exchange area for refrigerating and making ice for vehicle and ship exhaust gas, characterized by: The heat exchanger comprises a box body (1) which is hollow inside and open at the front, an exhaust gas intake pipe (2) is arranged on the left side of the box body (1), and the exhaust gas intake pipe (2) passes through from the left side outside to the inside of the box body (1), a flow equalization structure (3) is arranged in the box body (1), an S-shaped flow guide pipe (4) is arranged on the right side of the flow equalization structure (3), the S-shaped flow guide pipe (4) is provided with an inlet (401) and an outlet (402), and the inlet (401) and the outlet (402) are both arranged on the right side of the box body (1), a reflux structure (5) is arranged on the box body (1), and an exhaust pipe (6) is also arranged on the right side of the box body (1).

2. The novel heat exchanger with a fixed heat exchange area for refrigerating and making ice from vehicle and vessel exhaust gas according to claim 1 is characterized in that: The flow balancing structure (3) comprises a vertically placed flow balancing plate (301), on which a plurality of flow balancing holes (302) are arranged, and the flow balancing holes (302) penetrate from the left side to the right side of the flow balancing plate (301).

3. The novel heat exchanger with a fixed heat exchange area for refrigerating and making ice from vehicle and vessel exhaust gas according to claim 1 is characterized in that: The reflux structure (5) comprises a reflux pipe (501), one end of the reflux pipe (501) being connected to the exhaust pipe (6), the other end of the reflux pipe (501) being connected to the exhaust gas intake pipe (2), and a shut-off one-way valve (502) being provided on the reflux pipe (501).

4. The novel heat exchanger with a fixed heat exchange area for refrigerating and making ice from vehicle and vessel exhaust gas according to claim 1 is characterized in that: The exhaust pipe (6) is provided with a side stop valve (601).

5. The novel heat exchanger with a fixed heat exchange area for refrigerating and making ice from vehicle and vessel exhaust gas according to claim 4 is characterized in that: A temperature sensor (7) is also provided in the exhaust pipe (6).

6. The novel heat exchanger with a fixed heat exchange area for refrigerating and making ice from vehicle and vessel exhaust gas according to claim 1 is characterized in that: A plurality of temperature sensors (7) are arranged in the box (1).

7. The novel heat exchanger with a fixed heat exchange area for refrigerating and making ice from vehicle and vessel exhaust gas according to claim 1 is characterized in that: The exhaust gas intake pipe (2) is also provided with a filter screen (201).

8. The novel heat exchanger with a fixed heat exchange area for refrigerating and making ice from vehicle and vessel exhaust gas according to claim 1 is characterized in that: A control panel (101) is also provided on the right side of the box body (1).

9. The novel heat exchanger with a fixed heat exchange area for refrigerating and making ice from vehicle and vessel exhaust gas according to claim 1 is characterized in that: The front of the box body (1) is also provided with a box door (102), and the box door (102) is also provided with a handle (103).

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