Forced circulation device of heat exchanger

Abstract

The utility model belongs to the technical field of heat exchangers, and discloses a forced circulation device of a heat exchanger, which comprises a box body and a forced circulation fan, fan blades of the forced circulation fan and the heat exchanger are arranged in the box body, the box body is provided with an air inlet, an air outlet and a water outlet at the bottom, and one side of the heat exchanger is close to one side of the inner wall of the box body. A vertical air partition plate is arranged along the other side of the heat exchanger, air channels are arranged between the two ends of the vertical air partition plate and the inner wall of the box body, a fan air partition plate is arranged at the upper end of the air inlet and the upper end of the vertical air partition plate, holes are formed in the fan air partition plate and used for containing fan blades, and the heat exchanger, the two air channels and the inner space, away from the heat exchanger, of the box body form an air circulation channel. Through the action of forced circulation air, the air circulation multiplying power is enhanced, and the efficiency of the heat exchanger can be improved, so that the heat exchanger can play a proper heat exchange effect.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a forced circulation device for a heat exchanger. Background Art

[0002] Although some fin-tube heat exchangers are designed with sufficient heat exchange area, they cannot fully exert their due heat exchange effect during use, and the air circulation rate of the heat exchanger is low.

[0003] Therefore, it is urgent to study a heat exchanger forced circulation device to improve the efficiency of the heat exchanger. Utility Model Content

[0004] The embodiment of the utility model provides a heat exchanger forced circulation device to solve the problems of low air circulation ratio of the heat exchanger in the prior art. The utility model strengthens the air circulation ratio through the effect of forced circulating air, which can improve the efficiency of the heat exchanger so that it can play its due heat exchange effect. In order to have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A heat exchanger forced circulation device comprises a box body and a forced circulation fan, wherein the fan blades of the forced circulation fan and the heat exchanger are installed in the box body, and the box body is provided with an air inlet, an air outlet and a drain outlet at the bottom, one side of the heat exchanger is close to one side of the inner wall of the box body, and a vertical wind baffle is provided along the other side of the heat exchanger, and air ducts are provided between both ends of the vertical wind baffle and the inner wall of the box body, and fan wind baffles are provided at the air inlet and the upper end of the vertical wind baffle, and openings are provided on the fan wind baffle for placing the fan blades, and the heat exchanger, the two air ducts and the inner space of the box body away from the heat exchanger form an air circulation channel.

[0007] Preferably, the forced circulation fan is arranged above the outside of the box body and connected to the fan blades via an extended shaft. The forced circulation motor is selected from but not limited to a variable frequency axial flow fan. The air volume of the forced circulation fan is 5 to 30 times the air volume of the air inlet and outlet. Under the appropriate circulation ratio, the higher the circulation ratio, the higher the heat exchange efficiency, and the cooling of a large temperature difference can be achieved.

[0008] Preferably, the diameter of the opening is larger than the diameter of the circle formed by the rotation of the fan blades.

[0009] Preferably, the length of the vertical wind baffle is greater than the length of the side of the heat exchanger parallel to the vertical wind baffle.

[0010] Preferably, the air inlet is located at the top of the box body, and the air outlet is located at the bottom of the box body.

[0011] The technical solution provided by the embodiment of the utility model may have the following beneficial effects:

[0012] After the gas for heat exchange enters the box from the air inlet, the gas circulates between the heat exchanger, the air duct, and the air circulation channel, and part of the gas is discharged from the air outlet. The air volume of the forced circulation fan is 5 to 30 times the air volume of the air inlet and outlet. The gas exchanges heat with the heat exchanger many times before being discharged from the circulation device, so that the performance of the heat exchanger can be fully utilized. The forced circulation fan adopts a variable frequency axial flow fan, and the frequency of the forced circulation fan can be adjusted according to the temperature of the gas discharged from the air outlet to achieve the purpose of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0014] Figure 1 is a side view of a heat exchanger forced circulation device according to an exemplary embodiment;

[0015] Figure 2 The figure is a top view of a heat exchanger forced circulation device according to an exemplary embodiment.

[0016] Figure numerals: 1. box body, 2. vertical wind baffle, 3. forced circulation fan, 4. fan blades, 5. air inlet, 6. fan wind baffle, 7. heat exchanger, 8. drain outlet, 9. air circulation channel, 10. air outlet, 11. air duct. DETAILED DESCRIPTION

[0017] The following description and the accompanying drawings fully illustrate the specific embodiments of this paper so that those skilled in the art can practice them. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. The scope of the embodiments herein includes the entire scope of the claims, and all available equivalents of the claims.

[0018] Figure 1-2 An optional embodiment of a heat exchanger forced circulation device of the utility model is shown.

[0019] In this optional embodiment, the heat exchanger forced circulation device includes a box body 1 and a forced circulation fan 3, the fan blades 4 of the forced circulation fan 3 and the heat exchanger 7 are installed in the box body 1, and the box body 1 is provided with an air inlet 5, an air outlet 10 and a drain port 8 at the bottom. One side of the heat exchanger 7 is close to one side of the inner wall of the box body 1, and a vertical wind baffle plate 2 is provided along the other side of the heat exchanger 7. Air ducts 11 are provided between both ends of the vertical wind baffle plate 2 and the inner wall of the box body 1, and a fan wind baffle plate 6 is provided at the upper end of the air inlet 5 and the vertical wind baffle plate 2. The fan wind baffle plate 6 is provided with an opening for placing the fan blades 4. The heat exchanger 7, the two air ducts 11 and the internal space of the box body 1 away from the heat exchanger 7 form an air circulation channel 9.

[0020] Preferably, the forced circulation fan 3 is arranged above the outside of the box body 1 and connected to the fan blades 4 via an extended shaft. The forced circulation motor is selected from but not limited to a variable frequency axial flow fan. The air volume of the forced circulation fan 3 is 5 to 30 times the air volume of the air inlet and outlet. Under a suitable circulation ratio, the higher the circulation ratio, the higher the heat exchange efficiency, and the cooling of a large temperature difference can be achieved.

[0021] Preferably, the diameter of the opening is larger than the diameter of the circle formed by the rotation of the fan blade 4.

[0022] Preferably, the length of the vertical wind baffle plate 2 is greater than the length of the side of the heat exchanger 7 parallel to the vertical wind baffle plate 2 .

[0023] Preferably, the air inlet 5 is located at the top of the box body 1 , and the air outlet 10 is located at the bottom of the box body 1 .

[0024] When in use, the forced circulation fan 3 is started, and the gas for heat exchange enters the box 1 through the air inlet 5. The gas circulates between the heat exchanger 7, the air duct 11, and the air circulation channel 9, and part of the gas is discharged from the air outlet 10. The air volume of the forced circulation fan is 5 to 30 times the air volume of the air inlet and outlet. The gas exchanges heat with the heat exchanger 7 several times before being discharged from the circulation device, so that the performance of the heat exchanger 7 can be fully utilized. The forced circulation fan 3 adopts a variable frequency axial flow fan, and the frequency of the forced circulation fan 3 can be adjusted according to the temperature of the gas discharged from the air outlet 10 to achieve the purpose of energy saving.

[0025] The present invention is not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A heat exchanger forced circulation device, characterized in that: It includes a box body and a forced circulation fan, the fan blades and heat exchanger of the forced circulation fan are installed in the box body, the box body is provided with an air inlet, an air outlet and a drain outlet at the bottom, one side of the heat exchanger is close to one side of the inner wall of the box body, a vertical wind baffle is provided along the other side of the heat exchanger, air ducts are provided between both ends of the vertical wind baffle and the inner wall of the box body, fan wind baffles are provided at the air inlet and the upper end of the vertical wind baffle, openings are provided on the fan wind baffle for placing fan blades, and the heat exchanger, two air ducts and the internal space of the box body away from the heat exchanger form an air circulation channel.

2. A heat exchanger forced circulation device according to claim 1, characterized in that: The forced circulation fan is arranged above the outside of the box body and is connected to the fan blades via an extended shaft.

3. A heat exchanger forced circulation device as claimed in claim 1, characterized in that: The diameter of the opening is larger than the diameter of the circle formed by the rotation of the fan blade.

4. A heat exchanger forced circulation device as claimed in claim 1, characterized in that: The length of the vertical wind baffle is greater than the length of the side of the heat exchanger parallel to the vertical wind baffle.

5. A heat exchanger forced circulation device as claimed in claim 1, characterized in that: The air inlet is located at the top of the box body, and the air outlet is located at the bottom of the box body.

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