Low-flow-resistance plate fin type heat exchanger
By integrating the bypass valve in the fin heat exchanger of the wind power lubricating cooling system, the return oil channel is integrated into an oil outlet, which solves the problem of large flow resistance of the flow channel in low-temperature environments, and achieves efficient heat exchange and cost savings of lubricating oil.
Patent Information
- Application Number
- CN202421555106.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The fin heat exchanger in the existing wind power lubricating cooling system has a large flow resistance in the flow channel under low temperature environment, resulting in an external bypass valve at the end of the oil inlet channel, which increases the number of oil return ports and external pipes, which is not conducive to cost savings.
A low-flow resistor plate fin heat exchanger is designed, and the first and second oil return channels are integrated into one oil outlet by incorporating a bypass valve in the oil inlet passage, reducing the number of oil return ports and external pipes, and dividing the lubricant through multiple flow channels to reduce flow resistance.
The lubricant oil is discharged from one oil outlet, reducing the number of oil return ports and external piping, reducing the flow resistance of lubricant oil in the flow channel, and has the effect of cost saving and efficient heat exchange.
Smart Images
Figure CN222799694U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of wind power lubrication cooling systems, and in particular relates to a low flow resistance plate fin type heat exchanger. Background Art
[0002] In the wind power lubrication and cooling system, the lubricating oil is often cooled by heat exchange with air through a finned heat exchanger. Existing finned heat exchangers often include an oil inlet channel and two oil return channels respectively arranged on both sides of the oil inlet channel, a core is arranged between the oil inlet channel and the oil return channel, and a flow channel for connecting the oil inlet channel and the oil return channel is arranged inside the core. In a low temperature environment, the flow resistance in the flow channel is relatively large, so a bypass valve is often installed at the end of the oil inlet channel, and the two output ends of the bypass valve are respectively connected to the oil return channels on both sides through two channels, so that the lubricating oil is discharged from the oil outlets at the ends of the two oil return channels.
[0003] However, this structure has at least two oil outlets and many external pipes, which is not conducive to cost saving. Utility Model Content
[0004] In order to overcome the defects of the prior art, the utility model provides a low flow resistance plate-fin type heat exchanger, which can help save costs.
[0005] The purpose of the utility model is achieved through the following technical solutions:
[0006] A low flow resistance plate-fin heat exchanger comprises an oil inlet channel with an oil inlet at one end and two first oil return channels respectively arranged on both sides of the oil inlet channel, a core is arranged between the oil inlet channel and the first oil return channels, the two first oil return channels are connected to the same second oil return channel at one end away from the oil inlet, and an oil outlet is arranged on the second oil return channel; a bypass valve is built in at one end of the oil inlet channel away from the oil inlet, and the inlet end and the outlet end of the bypass valve are respectively connected to the oil inlet channel and the second oil return channel.
[0007] The beneficial effects of adopting the above technical solution are as follows: the bypass valve is built into the oil inlet channel to integrate the first oil return channel and the second oil return channel so that the lubricating oil is discharged from one oil outlet, thereby reducing the number of oil return ports and reducing external piping, which is beneficial to cost saving; in addition, the lubricating oil in the oil inlet channel is diverted to the core bodies on both sides, and is discharged after passing through the first oil return channel, the second oil return channel and the oil outlet in sequence, so as to reduce the length of the flow channel in a single core while keeping the total length of the heat exchange channel unchanged, thereby reducing the flow resistance of the lubricating oil in the flow channel.
[0008] In one embodiment, a plurality of flow channels connecting the oil inlet channel and the first oil return channel are provided in the core.
[0009] The beneficial effect of adopting the above technical solution is: by configuring in this way, the lubricating oil in the oil inlet channel enters the first oil return channel through the multiple flow channels, so as to improve the heat exchange efficiency.
[0010] In one embodiment, a plurality of flow channels are evenly arranged in the core along the length direction.
[0011] The beneficial effect of adopting the above technical solution is: such an arrangement is conducive to the lubricating oil entering the first oil return channel evenly through a plurality of flow channels, so as to facilitate efficient heat exchange.
[0012] In one embodiment, the oil inlet passage and the first oil return passage are parallel to each other.
[0013] In one embodiment, the length direction of the flow channel is perpendicular to the length direction of the oil inlet channel.
[0014] The beneficial effect of adopting the above technical solution is that the flow channel is arranged in this way so as to be shorter in length, thereby facilitating reduction of the flow resistance of the lubricating oil in the flow channel.
[0015] In one embodiment, the core widths on both sides of the oil inlet channel are the same.
[0016] The beneficial effect of adopting the above technical solution is that the flow resistance of the lubricating oil in the flow channels in the cores on both sides is kept as consistent as possible.
[0017] In one embodiment, the two first oil return passages are respectively communicated with two ends of the second oil return passage.
[0018] In one embodiment, the axes of the oil inlet channel and the oil outlet coincide with each other.
[0019] The beneficial effects of the utility model are:
[0020] The bypass valve is built into the oil inlet channel to integrate the first oil return channel and the second oil return channel so that the lubricating oil is discharged from one oil outlet, thereby reducing the number of oil return ports and reducing external piping, which is beneficial to cost saving; in addition, the lubricating oil in the oil inlet channel is diverted to the core bodies on both sides, and is discharged after passing through the first oil return channel, the second oil return channel and the oil outlet in sequence, so as to reduce the length of the flow channel in a single core while keeping the total length of the heat exchange channel unchanged, thereby reducing the flow resistance of the lubricating oil in the flow channel. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.
[0022] in:
[0023] Figure 1 The schematic diagram of the structure of the utility model is shown;
[0024] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.
[0025] Reference numerals:
[0026] 1- oil inlet channel, 2- oil inlet port, 3- first oil return channel, 4- second oil return channel, 5- oil outlet port, 6- bypass valve, 7- core body. DETAILED DESCRIPTION
[0027] The utility model will be further described below in conjunction with the accompanying drawings.
[0028] like Figure 1 As shown, the existing fin heat exchanger often includes an oil inlet channel and two oil return channels respectively arranged on both sides of the oil inlet channel, a core is arranged between the oil inlet channel and the oil return channel, and a flow channel for connecting the oil inlet channel and the oil return channel is arranged inside the core. In a low temperature environment, the flow resistance in the flow channel is relatively large, so a bypass valve is often externally arranged at the end of the oil inlet channel, and the two output ends of the bypass valve are respectively connected to the oil return channels on both sides through two channels. When the bypass valve is not opened, it will block the connection between the oil return channels on both sides. Therefore, the existing fin heat exchanger often has oil outlets at the ends of the two oil return channels, so that the lubricating oil can be discharged from the oil outlets at the ends of the two oil return channels. However, this structure has at least two oil outlets, and there are many external pipes, which is not conducive to cost saving.
[0029] Therefore, the utility model provides a low flow resistance plate-fin heat exchanger, as shown in the figure, which includes an oil inlet channel 1 with an oil inlet 2 at one end and two first oil return channels 3 respectively arranged on both sides of the oil inlet channel 1, a core 7 is arranged between the oil inlet channel 1 and the first oil return channel 3, and the ends of the two first oil return channels 3 away from the oil inlet 2 are both connected to the same second oil return channel 4, and an oil outlet 5 is arranged on the second oil return channel 4; a bypass valve 6 is built-in at the end of the oil inlet channel 1 away from the oil inlet 2, and the inlet end and the outlet end of the bypass valve 6 are respectively connected to the oil inlet channel 1 and the second oil return channel 4;
[0030] Among them, after the bypass valve 6 has a preset opening pressure, it is beneficial to open the bypass valve 6 when the flow resistance of the lubricating oil through the flow channel in the core 7 is greater than the opening pressure of the bypass valve 6, so that the lubricating oil is discharged through the second oil return channel 4 and the oil outlet 5 in sequence, and no longer cooled by the core 7.
[0031] It can be understood that, compared with the existing finned heat exchanger, the utility model has the bypass valve 6 built into the oil inlet channel 1 to integrate the first oil return channel 3 and the second oil return channel 4, so that the lubricating oil is discharged from one oil outlet 5, thereby reducing the number of oil return ports and reducing external piping, which is conducive to cost saving;
[0032] In addition, the lubricating oil in the oil inlet channel 1 is divided into the core bodies 7 on both sides, and is discharged after passing through the first oil return channel 3, the second oil return channel 4 and the oil outlet 5 in sequence, so as to reduce the length of the flow channel in the single core body 7 while keeping the total length of the heat exchange channel unchanged, thereby reducing the flow resistance of the lubricating oil in the flow channel.
[0033] It should be noted that the heat exchange process of the lubricating oil occurs at the core 7 , and when the lubricating oil flows into the flow channel in the core 7 , the lubricating oil exchanges heat with the air outside the core 7 to achieve cooling.
[0034] In one embodiment, a plurality of flow channels connecting the oil inlet channel 1 and the first oil return channel 3 are disposed in the core 7 .
[0035] It can be understood that this arrangement allows the lubricating oil in the oil inlet channel 1 to enter the first oil return channel 3 through multiple flow channels, so as to improve the heat exchange efficiency.
[0036] In one embodiment, a plurality of flow channels are evenly arranged in the core 7 along the length direction.
[0037] It can be understood that such an arrangement is conducive to the lubricating oil entering the first oil return channel 3 evenly through a plurality of flow channels, so as to facilitate efficient heat exchange.
[0038] In one embodiment, the oil inlet passage 1 and the first oil return passage 3 are parallel to each other.
[0039] In one embodiment, the length direction of the flow channel is perpendicular to the length direction of the oil inlet channel 1 .
[0040] It can be understood that such an arrangement can make the length of the flow channel shorter, thereby facilitating reduction of the flow resistance of the lubricating oil in the flow channel.
[0041] In one embodiment, the widths of the cores 7 on both sides of the oil inlet channel 1 are the same, so that the flow resistance of the lubricating oil in the flow channels in the cores 7 on both sides can be kept as consistent as possible.
[0042] In one embodiment, the two first oil return passages 3 are respectively connected to two ends of the second oil return passage 4 .
[0043] In one embodiment, the axes of the oil inlet channel 1 and the oil outlet 5 coincide with each other.
[0044] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0045] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.
Claims
1. A low flow resistance plate-fin heat exchanger, characterized in that: The invention comprises an oil inlet channel (1) having an oil inlet (2) at one end thereof and two first oil return channels (3) respectively arranged on both sides of the oil inlet channel (1); a core (7) is arranged between the oil inlet channel (1) and the first oil return channels (3); the ends of the two first oil return channels (3) away from the oil inlet (2) are both connected to the same second oil return channel (4); the second oil return channel (4) is provided with an oil outlet (5); a bypass valve (6) is built in at the end of the oil inlet channel (1) away from the oil inlet (2); the inlet end and the outlet end of the bypass valve (6) are respectively connected to the oil inlet channel (1) and the second oil return channel (4).
2. A low flow resistance plate-fin heat exchanger according to claim 1, characterized in that: A plurality of flow channels connecting the oil inlet channel (1) and the first oil return channel (3) are arranged in the core (7).
3. A low flow resistance plate-fin heat exchanger according to claim 2, characterized in that: A plurality of flow channels are evenly arranged in the core body (7) along the length direction.
4. A low flow resistance plate-fin heat exchanger according to claim 2 or 3, characterized in that: The oil inlet passage (1) and the first oil return passage (3) are parallel to each other.
5. A low flow resistance plate-fin heat exchanger according to claim 4, characterized in that: The length direction of the flow channel is perpendicular to the length direction of the oil inlet channel (1).
6. The low flow resistance plate-fin heat exchanger according to claim 1, characterized in that: The core bodies (7) on both sides of the oil inlet channel (1) have the same width.
7. The low flow resistance plate-fin heat exchanger according to claim 1, characterized in that: The two first oil return passages (3) are respectively connected to two ends of the second oil return passage (4).
8. The low flow resistance plate-fin heat exchanger according to claim 1, characterized in that: The axes of the oil inlet channel (1) and the oil outlet (5) coincide with each other.