Heat exchanger with preheating function

Abstract

The utility model relates to a heat exchanger, belongs to the technical field of heat exchangers, in particular to a heat exchanger with a preheating function, which comprises a heat exchanger body, and a preparation cavity, a heating cavity and a transition cavity are arranged in the heat exchanger body from top to bottom. The sleeve is fixedly installed at the top end of the side wall of the heat exchanger body, a preheating pipe is arranged in the sleeve, a backflow pipe is fixedly installed at the bottom end of the side wall of the heat exchanger body, and a heat source inlet is fixedly installed at the top end of the side wall of the heat exchanger body; a heat source medium enters the heating cavity to heat the heat exchange pipe, flows out of the return pipe, flows into the preheating pipe and preheats the preparation cavity, and can directly flow into the preheating pipe from the connecting pipe, so that the temperature difference when a substance to be heated enters the heat exchange pipe for heat exchange is reduced, and the heat exchange efficiency is improved; the problem that an existing heat exchanger with a preheating function is poor in heat exchange effect is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger with a preheating function. Background Art

[0002] Heat exchanger is a device that transfers part of the heat of hot fluid to cold fluid, also known as heat exchanger. Heat exchanger is a common equipment in chemical, petroleum, power, food and many other industrial sectors, and plays an important role in production.

[0003] The Chinese patent with publication number CN215063933U discloses a heat exchanger with a preheating function, including a heat exchange box, a heat source inlet and a heat source outlet are provided at the upper end of the heat exchange box, a heat exchange tube is provided inside the heat exchange box, the heat source inlet and the heat source outlet are connected with the heat exchange tube, a heat exchange air outlet and a heat exchange air inlet are provided on the side wall of the heat exchange box, a jacket is provided on the outer wall of the heat exchange box, the heat exchange air inlet is connected to the jacket, the jacket covers the outer surface of the heat exchange box, and there is a cavity between the jacket and the heat exchange box, and the cavity is connected with the inside of the heat exchange box. This patent relates to the technical field of heat exchangers. By arranging a jacket outside the heat exchange box, the required heat exchange air is preheated, which can prevent the outer wall of the heat exchange box from directly contacting the external ambient temperature to cause heat loss, thereby improving the heat exchange efficiency; at the same time, the temperature difference between the inner and outer walls of the heat exchange box is reduced, and the service life of the heat exchange box is improved.

[0004] In the above technical solution, a jacket is provided on the outside of the heat exchange box to achieve preheating of the required heat exchange air, which can prevent the outer wall of the heat exchange box from directly contacting the external ambient temperature and causing heat loss. However, hot smoke passes through the heat exchange tube. When heating the normal temperature air, there is a temperature difference between the normal temperature air in the jacket and the air inside the heat exchange box. The gas or fluid inside the heat exchange box can easily cause heat loss through the normal temperature air that first enters the jacket, thereby weakening the heat exchange effect. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes a heat exchanger with a preheating function. The heat source medium enters the heating chamber to heat the heat exchange tube. The heat source medium flows out through the reflux pipe and flows to the inside of the preheating tube to preheat the preparation chamber. The heat source medium can flow directly from the connecting pipe to the preheating tube, which reduces the temperature difference when the heated material enters the heat exchange tube for heat exchange and improves the heat exchange efficiency.

[0006] The technical solution to achieve the purpose of the utility model is: a heat exchanger with a preheating function, including a heat exchanger body, the interior of the heat exchanger body is provided with a preparation chamber, a heating chamber and a transition chamber from top to bottom, and also includes;

[0007] The sleeve is fixedly installed on the top of the side wall of the heat exchanger body, a preheating pipe is arranged inside the sleeve, a return pipe is fixedly installed on the bottom of the side wall of the heat exchanger body, the other end of the return pipe is connected with the preheating pipe, a heat source outlet is fixedly installed on the side wall of the sleeve, a heat exchange air inlet is fixedly installed on the top wall of the heat exchanger body, a heat exchange air outlet is fixedly installed on the top wall of the heat exchanger body, a heat source inlet is fixedly installed on the top of the side wall of the heat exchanger body, and the heat exchange pipes are respectively connected with the preparation chamber and the transition chamber.

[0008] In some embodiments, a connecting pipe is fixedly connected to the top end of the inner side wall of the heating chamber, the other end of the connecting pipe is fixedly connected to the return pipe, and a one-way valve is fixedly installed on the side wall of the connecting pipe.

[0009] In some embodiments, an air inlet bin and an air outlet bin are provided inside the preparation chamber, a baffle is fixedly installed on the inner bottom wall of the preparation chamber, and the air inlet bin and the air outlet bin are located on both sides of the baffle.

[0010] In some embodiments, the preheating tube is spiral-shaped.

[0011] In some embodiments, a plurality of partitions are fixedly mounted on the inner side wall of the heating chamber, and the partitions are staggered in the upper and lower parts.

[0012] In some embodiments, a filter is fixedly mounted on the inner side wall of the heat source outlet.

[0013] Compared with the prior art, the utility model has the following significant advantages:

[0014] First, when the utility model is in use, the heat source medium enters the heating chamber through the heat source inlet, so that the heat source medium heats the material to be heated inside the heat exchange tube, and the heat source medium flows out through the reflux tube to the preheating tube, and the preheating tube preheats the material to be heated inside the preparation chamber. The one-way valve can also be opened at the same time to allow the heat source medium to flow directly from the connecting tube to the preheating tube, thereby increasing the temperature inside the preheating tube, reducing the temperature difference when the material to be heated enters the heat exchange tube for heat exchange, and also improving the utilization rate of the heat in the heat source medium, thereby improving the heat exchange efficiency of the heat exchanger body; solving the problem of poor heat exchange effect of the existing heat exchanger with preheating function.

[0015] Second: The utility model allows the material to be heated to enter the air inlet bin from the heat exchange air inlet, and the material to be heated flows to the inside of the heat exchange tube, then flows to the transition chamber through the heat exchange tube, and then flows to the heat exchange tube connected to the air outlet bin, until the material to be heated flows to the inside of the air outlet bin and flows out through the heat exchange air outlet, extending the flow path of the material to be heated so that the material to be heated can be fully heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the partially exploded structure of the utility model;

[0019] Figure 3 Schematic diagram of the internal structure of the utility model.

[0020] Description of reference numerals:

[0021] 1. Heat exchanger body; 11. Air inlet bin; 12. Air outlet bin; 13. Transition chamber; 2. Heat exchange tube; 3. Reflux pipe; 31. Connecting pipe; 32. One-way valve; 4. Casing; 41. Preheating tube; 42. Heat source outlet; 5. Heat exchange air inlet; 6. Heat exchange air outlet; 7. Heat source inlet; 8. Baffle; 9. Partition. DETAILED DESCRIPTION

[0022] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a heat exchanger with a preheating function through improvement. The technical solution of the utility model is:

[0024] like Figure 1 - Figure 3As shown, a heat exchanger with a preheating function comprises a heat exchanger body 1, wherein the interior of the heat exchanger body 1 is provided with a preparation chamber, a heating chamber and a transition chamber 13 from top to bottom, and further comprises a sleeve 4; the sleeve 4 is fixedly mounted on the top of the side wall of the heat exchanger body 1, and a preheating pipe 41 is arranged inside the sleeve 4, and the preheating pipe 41 is spiral-shaped; a return pipe 3 is fixedly mounted on the bottom end of the side wall of the heat exchanger body 1, and the return pipe 3 is connected to the heating chamber, and the other end of the return pipe 3 is connected to the preheating pipe 41, and the top end of the inner side wall of the heating chamber is fixedly connected to a connection The connecting pipe 31 is connected to the other end of the connecting pipe 31 and is fixedly connected to the return pipe 3. A one-way valve 32 is fixedly installed on the side wall of the connecting pipe 31. The one-way valve 32 is set to facilitate the heat source medium that has just flowed into the heating chamber to flow to the inside of the preheating pipe 41 through the connecting pipe 31, thereby increasing the temperature inside the preheating pipe 41 and enhancing the preheating effect. A heat source outlet 42 is fixedly installed on the side wall of the sleeve 4. The preheating pipe 41 is connected to the heat source outlet 42. A filter is fixedly installed on the inner side wall of the heat source outlet 42. The heat source material is filtered by the setting of the filter. , green and environmentally friendly, an air inlet bin 11 and an air outlet bin 12 are provided inside the preparation chamber, a baffle 8 is fixedly installed on the bottom wall of the preparation chamber, the air inlet bin 11 and the air outlet bin 12 are located on both sides of the baffle 8, a heat exchange air inlet 5 is fixedly installed on the top wall of the heat exchanger body 1, a heat exchange air outlet 6 is fixedly installed on the top wall of the heat exchanger body 1, the heat exchange air inlet 5 is connected with the air inlet bin 11, the heat exchange air outlet 6 is connected with the air outlet bin 12, a heat source inlet 7 is fixedly installed on the top of the side wall of the heat exchanger body 1, and the heat source inlet 7 The heat exchange tube 2 is connected to the heating chamber, and is respectively connected to the preparation chamber and the transition chamber 13; when in use, the heat source medium enters the heating chamber through the heat source inlet 7, so that the heat source medium heats the material to be heated inside the heat exchange tube 2, and the heat source medium flows out through the reflux pipe 3 and flows into the preheating tube 41. The preheating tube 41 preheats the material to be heated inside the preparation chamber, thereby reducing the temperature difference of the material to be heated when entering the heat exchange tube 2 for heat exchange, and also improving the utilization rate of the heat in the heat source medium, thereby improving the heat exchange efficiency of the heat exchanger body 1.

[0025] like Figure 2 and Figure 3 As shown, in one embodiment, a plurality of partitions 9 are fixedly installed on the inner side wall of the heating chamber, and the partitions 9 are staggered in an up-and-down manner. Through the arrangement of the partitions 9, an up-and-down staggered deflection blocking structure can be formed inside the heating chamber, so that the heat in the heat source medium can contact and heat exchange with the material to be heated in the reflux pipe 3 over a larger area.

[0026] The specific working method is as follows: when in use, the heat source medium enters the heating chamber through the heat source inlet 7, flows in an S shape through the partition of the partition 9, and fully passes around the heat exchange tube 2, so that the heat source medium heats the material to be heated inside the heat exchange tube 2. The heat exchange tube 2 is surrounded by the heat source medium, which reduces the influence of other external temperatures on the material to be heated. The heat source medium flows out through the reflux pipe 3 and flows into the preheating pipe 41. The preheating pipe 41 preheats the material to be heated inside the preparation chamber. The one-way valve 32 can also be opened at the same time to allow the heat source medium to flow directly from the connecting pipe 31 to the preheating pipe 41, thereby strengthening the preheating pipe. The temperature inside 41 reduces the temperature difference when the material to be heated enters the heat exchange tube 2 for heat exchange, and also improves the utilization rate of the heat in the heat source medium, thereby improving the heat exchange efficiency of the heat exchanger body 1. Then, the material to be heated enters the air inlet bin 11 from the heat exchange air inlet 5, and the material to be heated flows to the inside of the heat exchange tube 2, and then flows to the transition chamber 13 through the heat exchange tube 2, and then flows to the heat exchange tube 2 connected to the air outlet bin 12, until the material to be heated flows to the inside of the air outlet bin 12 and flows out through the heat exchange air outlet 6, thereby extending the flow path of the material to be heated, so that the material to be heated can be fully heated.

[0027] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A heat exchanger with a preheating function, comprising a heat exchanger body (1), wherein the interior of the heat exchanger body (1) is provided with a preparation chamber, a heating chamber and a transition chamber (13) from top to bottom, and wherein: Also includes; The sleeve (4) is fixedly mounted on the top of the side wall of the heat exchanger body (1), a preheating pipe (41) is arranged inside the sleeve (4), a return pipe (3) is fixedly mounted on the bottom of the side wall of the heat exchanger body (1), the other end of the return pipe (3) is connected to the preheating pipe (41), a heat source outlet (42) is fixedly mounted on the side wall of the sleeve (4), a heat exchange air inlet (5) is fixedly mounted on the top wall of the heat exchanger body (1), a heat exchange air outlet (6) is fixedly mounted on the top wall of the heat exchanger body (1), a heat source inlet (7) is fixedly mounted on the top of the side wall of the heat exchanger body (1), and the heat exchange pipe (2) is respectively connected to the preparation chamber and the transition chamber (13).

2. A heat exchanger with preheating function according to claim 1, characterized in that: The top end of the inner side wall of the heating chamber is fixedly connected with a connecting pipe (31), the other end of the connecting pipe (31) is fixedly connected with the return pipe (3), and a one-way valve (32) is fixedly installed on the side wall of the connecting pipe (31).

3. A heat exchanger with preheating function according to claim 1, characterized in that: An air inlet bin (11) and an air outlet bin (12) are provided inside the preparation chamber, and a baffle (8) is fixedly installed on the inner bottom wall of the preparation chamber, and the air inlet bin (11) and the air outlet bin (12) are located on both sides of the baffle (8).

4. The heat exchanger with preheating function according to claim 1, characterized in that: The preheating tube (41) is spiral-shaped.

5. The heat exchanger with preheating function according to claim 1, characterized in that: A plurality of partitions (9) are fixedly mounted on the inner side wall of the heating chamber, and the partitions (9) are staggered in an up-and-down manner.

6. The heat exchanger with preheating function according to claim 1, characterized in that: A filter screen is fixedly mounted on the inner side wall of the heat source outlet (42).

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