Energy-saving oil-water heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, in particular to an energy-saving oil-water heat exchanger which comprises a heat exchange water pipe and a heat exchange oil pipe, the heat exchange water pipe is inserted into the heat exchange oil pipe, and the heat exchange water pipe is provided with a fixing assembly used for being connected with the heat exchange oil pipe in a sealed mode. A plurality of fins are arranged on the side wall of the heat exchange water pipe and distributed in the length direction of the heat exchange water pipe in a staggered mode. The energy-saving device has the advantages that heat of oil can be absorbed by water more sufficiently, and the energy-saving effect is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of heat exchangers, in particular to an energy-saving oil-water heat exchanger. BACKGROUND

[0002] The basic principle of the air compressor waste heat recovery technology is to recycle the heat generated during the operation of an air compressor through a heat exchange device, and then utilize the heat for other purposes, such as heating, hot water supply or process heating.

[0003] In the process of recycling the oil waste heat of an air compressor, the oil of the air compressor and external water are conveyed into an oil-water heat exchanger. However, in order to make the heat of the oil more fully transferred to the water, the length of the oil-water heat exchanger is generally increased, thereby prolonging the heat exchange time. However, this method not only increases the installation area, but also has low heat exchange efficiency and low energy-saving coefficient. CONTENT OF THE UTILITY MODEL

[0004] In order to make the heat of the oil more fully absorbed by the water and improve the energy-saving effect, the application provides an energy-saving oil-water heat exchanger.

[0005] The application provides an energy-saving oil-water heat exchanger, which adopts the following technical scheme:

[0006] The energy-saving oil-water heat exchanger comprises a heat exchange water pipe and a heat exchange oil pipe, the heat exchange water pipe is inserted into the heat exchange oil pipe, the heat exchange water pipe is provided with a fixing assembly for sealing connection with the heat exchange oil pipe, and the side wall of the heat exchange water pipe is provided with a plurality of fins which are distributed in a staggered manner along the length direction of the heat exchange water pipe.

[0007] When heat exchange of hot oil is needed, water flow is first introduced into the heat exchange water pipe, and hot oil output by an air compressor is introduced into the heat exchange oil pipe. When the hot oil is introduced into the heat exchange oil pipe, the hot oil flows between the heat exchange water pipe and the heat exchange oil pipe. Under the blocking effect of the plurality of staggered fins, the hot oil flows in a coiled manner between the heat exchange water pipe and the heat exchange oil pipe, thereby prolonging the flow path of the hot oil and prolonging the residence time of the hot oil, and thus the heat of the hot oil is more fully absorbed by the water.

[0008] Optionally, the side wall of the fin is provided with a slot, the fin is inserted into the side wall of the heat exchange water pipe through the slot, and the heat exchange water pipe is provided with a connecting piece for fixing the fin.

[0009] When the fin needs to be installed, the fin is first inserted into the side wall of the heat exchange water pipe through the slot, and then the fin is connected and fixed to the heat exchange water pipe through the connecting piece, thereby improving the convenience of dismounting and mounting the fin.

[0010] Optionally, the connecting member is a first bolt and a first nut, the side wall of the heat exchange water pipe is provided with a connecting lug, the first bolt penetrates the fin and the connecting lug in sequence, and the first nut is threadedly connected with the first bolt.

[0011] By adopting the above technical scheme, when the fin needs to be fixed, the fixing end of the first bolt penetrates the fin and the connecting lug in sequence, and then the first nut is threadedly connected with the fixing end of the first bolt, at this time, the fin is fixedly connected with the heat exchange water pipe through the connecting lug, thereby facilitating improvement of the stability of the connection and fixation of the fin and the heat exchange water pipe.

[0012] Optionally, the fixing assembly comprises a second bolt and a second nut, one end of the heat exchange water pipe is provided with a cover body, one end of the heat exchange oil pipe is annularly provided with a resisting ring, the resisting ring is inserted with the cover body, the second bolt penetrates the cover body and the resisting ring in sequence, and the second nut is threadedly connected with the second bolt.

[0013] By adopting the above technical scheme, when the heat exchange water pipe needs to be fixed in the heat exchange oil pipe, the heat exchange water pipe is first inserted into the heat exchange oil pipe until the cover body covers the resisting ring, then the fixing end of the second bolt penetrates the cover body and the resisting ring in sequence, and then the second nut is threadedly connected with the fixing end of the second bolt, at this time, the heat exchange water pipe is fixed in the heat exchange oil pipe, thereby facilitating improvement of the convenience of disassembly and assembly of the heat exchange water pipe and the heat exchange oil pipe.

[0014] Optionally, the inner side of the cover body is provided with a sealing gasket.

[0015] By adopting the above technical scheme, under the action of the sealing gasket, it is beneficial to avoid the leakage of hot oil from the gap between the cover body and the resisting ring, thereby improving the sealing performance between the resisting ring and the cover body.

[0016] Optionally, the side wall of one end of the heat exchange oil pipe is fixedly communicated with an oil inlet pipe, and the side wall of the other end of the heat exchange oil pipe is fixedly communicated with an oil outlet pipe.

[0017] By adopting the above technical scheme, hot oil is inputted into the heat exchange oil pipe and the heat exchange water pipe through the oil inlet pipe, and the oil is collected into the next process through the oil outlet pipe.

[0018] Optionally, the outer side of the cover body is fixedly communicated with a water inlet pipe and a water outlet pipe.

[0019] By adopting the above technical scheme, water is inputted into the heat exchange water pipe through the water inlet pipe, and the heat exchanged water is outputted through the water outlet pipe.

[0020] Optionally, the heat exchange water pipe is made of stainless steel.

[0021] By adopting the above technical scheme, the stainless steel has heat conduction and corrosion resistance, thereby improving the heat exchange efficiency.

[0022] In summary, the present application has the following beneficial technical effects:

[0023] When heat exchange of hot oil is needed, water flow is first introduced into the heat exchange water pipe, and hot oil output by the air compressor is connected to the heat exchange oil pipe. When the hot oil is input into the heat exchange oil pipe, the hot oil flows between the heat exchange water pipe and the heat exchange oil pipe. Under the blocking effect of the multiple staggered fins, the hot oil flows between the heat exchange water pipe and the heat exchange oil pipe, thereby extending the flow path of the hot oil and prolonging the residence time of the hot oil, thereby facilitating more complete absorption of the heat of the hot oil by the water and improving the energy saving effect. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the energy-saving oil-water heat exchanger of the present application;

[0025] Figure 2 is a cross-sectional view of the heat exchange oil pipe of the present application.

[0026] Reference signs: 1, heat exchange water pipe; 2, heat exchange oil pipe; 3, flow channel; 4, fin; 5, insertion slot; 6, first bolt; 7, first nut; 8, connecting lug; 9, second bolt; 10, second nut; 11, cover; 12, grommet; 13, sealing gasket; 14, oil inlet pipe; 15, oil outlet pipe; 16, water inlet pipe; 17, water outlet pipe. DETAILED DESCRIPTION

[0027] The following will be described in detail in combination with the accompanying Figures 1-2 The present application will be further described in detail.

[0028] Referring to Figure 1 and Figure 2 An energy-saving oil-water heat exchanger includes a heat exchange water pipe 1 and a heat exchange oil pipe 2. The heat exchange water pipe 1 is inserted into the heat exchange oil pipe 2, and there is a flow channel 3 between the heat exchange water pipe 1 and the heat exchange oil pipe 2. The heat exchange water pipe 1 is installed with a fixing assembly, and the heat exchange water pipe 1 is fixedly connected with the heat exchange oil pipe 2 through the fixing assembly. The side wall of the heat exchange water pipe 1 is installed with fins 4, and the number of the fins 4 is multiple. The multiple fins 4 are distributed in a staggered manner along the length direction of the heat exchange water pipe 1.

[0029] The heat generated during the operation of the air compressor is usually cooled by oil cooling, and the hot oil after absorbing heat is output from one of the output ends of the air compressor and enters the heat exchange oil pipe 2. At the same time, water flow is introduced into the heat exchange water pipe 1. After the hot oil is input, the hot oil flows between the heat exchange water pipe 1 and the heat exchange oil pipe 2. The plurality of staggered fins 4 make the flow channel 3 S-shaped, thereby prolonging the path of the hot oil flow and prolonging the residence time of the hot flow in the flow channel 3, which is conducive to more fully absorbing the heat of the hot oil by the water.

[0030] Referring to Figure 2 In order to facilitate the connection and fixation of the fin 4 and the heat exchange water pipe 1, the side wall of the fin 4 is provided with a slot 5, and the fin 4 is inserted with the heat exchange water pipe 1 through the slot 5.

[0031] In addition, the heat exchange water pipe 1 is also provided with a connecting piece, which is a first bolt 6 and a first nut 7. The side wall of the heat exchange water pipe 1 is fixedly connected with a connecting lug 8. A plurality of groups of connecting lugs 8 are linearly distributed along the length direction of the heat exchange water pipe 1. Each group of connecting lugs 8 is provided with two connecting lugs 8, and the two connecting lugs 8 are symmetrically fixed to the side wall of the heat exchange water pipe 1. The fin 4 is tightly attached to the side wall of each group of connecting lugs 8. The number of the first bolt 6 and the first nut 7 is the same as that of the connecting lug 8. The fixed end of the first bolt 6 penetrates the fin 4 and the connecting lug 8 in sequence, and the first nut 7 is threadedly connected with the fixed end of the first bolt 6.

[0032] When it is necessary to fix the fin 4, first, the fin 4 is inserted with the heat exchange water pipe 1 through the slot 5, and at the same time, the fin 4 is tightly attached to the connecting lug 8. Then, the fixed end of the first bolt 6 penetrates the fin 4 and the connecting lug 8 in sequence, and then the first nut 7 is threadedly tightened with the fixed end of the first bolt 6. At this time, the fin 4 is fixed to the side wall of the heat exchange water pipe 1 through the connecting lug 8.

[0033] Specifically, referring to Figure 1 , the fixing assembly comprises a second bolt 9 and a second nut 10. One end of the heat exchange water pipe 1 is fixedly connected with a cover body 11, and the other end of the heat exchange water pipe 1 is a closed end. The heat exchange oil pipe 2 is fixedly provided with an abutting ring 12 at one end, and the abutting ring 12 is inserted with the cover body 11. The fixed end of the second bolt 9 penetrates the cover body 11 and the abutting ring 12 in sequence, and the second nut 10 is threadedly connected with the fixed end of the second bolt 9.

[0034] When it is necessary to fix the heat exchange water pipe 1 in the heat exchange oil pipe 2, first, the heat exchange water pipe 1 is inserted into the heat exchange oil pipe 2 until the cover body 11 completely covers the abutting ring 12. Then, the fixed end of the second bolt 9 penetrates the cover body 11 and the abutting ring 12 in sequence, and then the second nut 10 is threadedly connected with the fixed end of the second bolt 9. At this time, the heat exchange water pipe 1 is fixed in the heat exchange oil pipe 2.

[0035] Referring to Figure 2In order to avoid the leakage of hot oil from the abutting ring 12 and the cover 11, the inner side of the cover 11 is fixedly connected with a sealing gasket 13. When the heat exchange water pipe 1 is fixed in the heat exchange oil pipe 2, the abutting ring 12 abuts against the inner side of the cover 11, so as to improve the sealing between the abutting ring and the cover 11.

[0036] Referring to Figure 1 In order to improve the stability of the input and output of hot oil from the heat exchange oil pipe 2, the side wall of one end of the heat exchange oil pipe 2 is fixedly connected with an oil inlet pipe 14, and the side wall of the other end of the heat exchange oil pipe 2 is fixedly connected with an oil outlet pipe 15.

[0037] Referring to Figure 1 In order to improve the stability of the input and output of water flow from the heat exchange water pipe 1, the outer side of the cover 11 is fixedly connected with a water inlet pipe 16 and a water outlet pipe 17. The water inlet pipe 16 and the water outlet pipe 17 are connected with the heat exchange water pipe through the cover 11.

[0038] It is worth mentioning that, referring to Figure 1 Figure 1 The main material of the heat exchange water pipe 1 is stainless steel, which has good heat conductivity and corrosion resistance, so as to improve the service life of the heat exchange water pipe 1.

[0039] Working principle of the energy-saving oil-water heat exchanger:

[0040] The heat generated during the operation of the air compressor is usually cooled by oil cooling. The hot oil after absorbing heat is output from one output end of the air compressor and enters the heat exchange oil pipe 2 through the oil inlet pipe 14. At the same time, water flow is introduced into the heat exchange water pipe 1 through the water inlet pipe 16. After the hot oil is input, the hot oil flows between the heat exchange water pipe 1 and the heat exchange oil pipe 2, and the heat is transferred to the flowing water through the fins 4 and the stainless steel heat exchange water pipe 1, so as to complete the heat exchange.

[0041] As described above, the plurality of staggered fins 4 make the flow channel 3 present an S shape, so as to prolong the path of the hot oil flow and prolong the residence time of the hot flow in the flow channel 3, which is beneficial to make the heat of the hot oil more fully absorbed by the water, so as to improve the energy-saving effect.

[0042] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An energy saving oil-water heat exchanger comprising heat exchanging water pipes (1) and heat exchanging oil pipes (2), characterized in that: The heat exchange water pipe (1) is inserted into the heat exchange oil pipe (2), the heat exchange water pipe (1) is provided with a fixing assembly for sealing connection with the heat exchange oil pipe (2), and the side wall of the heat exchange water pipe (1) is provided with a plurality of fins (4) which are distributed in a staggered manner along the length direction of the heat exchange water pipe (1).

2. An energy saving oil to water heat exchanger according to claim 1 wherein: The side wall of the fin (4) is provided with a slot (5), the fin (4) is inserted into the heat exchange water pipe (1) through the slot (5), and the heat exchange water pipe (1) is provided with a connecting piece for fixing the fin (4).

3. An energy saving oil to water heat exchanger according to claim 2, wherein: The connecting piece is a first bolt (6) and a first nut (7), the side wall of the heat exchange water pipe (1) is provided with a connecting lug (8), the first bolt (6) penetrates the fin (4) and the connecting lug (8) in sequence, and the first nut (7) is threadedly connected with the first bolt (6).

4. The energy efficient oil to water heat exchanger of claim 1, wherein: The fixing assembly comprises a second bolt (9) and a second nut (10), one end of the heat exchange water pipe (1) is provided with a cover body (11), one end of the heat exchange oil pipe (2) is annularly provided with an abutting ring (12), the abutting ring (12) is inserted into the cover body (11), the second bolt (9) penetrates the cover body (11) and the abutting ring (12) in sequence, and the second nut (10) is threadedly connected with the second bolt (9).

5. An energy efficient oil to water heat exchanger according to claim 4, wherein: The inner side of the cover body (11) is provided with a sealing gasket (13).

6. An energy efficient oil to water heat exchanger as claimed in claim 1 wherein: The side wall of one end of the heat exchange oil pipe (2) is fixedly connected with an oil inlet pipe (14), and the side wall of the other end of the heat exchange oil pipe (2) is fixedly connected with an oil outlet pipe (15).

7. An energy saving oil to water heat exchanger according to claim 4 wherein: The outer side of the cover body (11) is fixedly connected with a water inlet pipe (16) and a water outlet pipe (17) respectively.

8. An energy saving oil to water heat exchanger according to claim 1, wherein: The heat exchange water pipe (1) is made of stainless steel.

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