Oil-water cooler capable of automatically replenishing water
By designing an automatic water replenishment system and filtration components, the problems of manual water replenishment and impurities in the cooling water caused by the drop in water level of the oil-water cooler are solved. Automatic water replenishment and impurity filtration are achieved, improving cooling efficiency and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HENGLIN PIPE TECHNOLOGY CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-08
AI Technical Summary
Existing oil-water coolers require manual water replenishment when the water level drops, which is inconvenient to operate and difficult to control accurately. Furthermore, impurities in the cooling water affect the cooling effect and lifespan.
An automatic water replenishment system was designed, comprising a liquid level sensor, a water pump, a PLC controller, and a filter assembly. This system enables automatic water replenishment and filtration of impurities. The water level sensor detects a drop in water level and activates the water pump. The PLC controls a solenoid valve to open and replenish water. The filter assembly includes a filter screen and a clamping mechanism for easy replacement.
It achieves automatic water replenishment and impurity filtration in oil-water coolers, improving cooling efficiency and service life, and is simple and accurate to operate.
Smart Images

Figure CN224215123U_ABST
Abstract
Description
Technical Field
[0001] This utility model mainly relates to the field of oil-water cooler technology, specifically to an oil-water cooler with automatic water replenishment. Background Technology
[0002] An oil-water cooler is a device placed in a cooling water circuit that uses the temperature of the cooling water to control the temperature of the lubricating oil. This device allows heat exchange between two liquid media with a certain temperature difference, thereby reducing the oil temperature and ensuring the normal operation of electrical equipment. When the lubricating oil temperature is high, it is cooled by the cooling water; when the engine starts, it absorbs heat from the cooling water to rapidly raise the temperature of the lubricating oil.
[0003] Existing oil-water coolers are generally placed horizontally for use. Over time, they lose a certain amount of water, causing the water level in the storage chamber to drop. If water is not replenished promptly after prolonged operation, the cooling efficiency of the oil-water cooler will decrease, and it may even damage the cooler. Currently, water replenishment for oil-water coolers is primarily done manually, which is cumbersome and time-consuming. It relies on experience to judge the timing and amount of water to add, making accurate replenishment difficult and inconvenient. Furthermore, the cooling water input into the oil-water cooler sometimes contains impurities. If these are not filtered before being injected, they will also affect the cooling effect and lifespan of the cooler. Therefore, it is necessary to propose an improvement measure to solve the above-mentioned technical problems.
[0004] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content
[0005] 1. The technical problem to be solved by the utility model:
[0006] This utility model provides an oil-water cooler with automatic water replenishment to solve the technical problems existing in the background art.
[0007] 2. Technical Solution:
[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows: an oil-water cooler with automatic water replenishment, comprising an oil-water cooler body, a base corresponding to the bottom of the oil-water cooler body, water storage chambers corresponding to the interior of both sides of the oil-water cooler body, an inlet and an outlet corresponding to the front of the water storage chambers on both sides of the oil-water cooler body, and a removable and replaceable filter assembly correspondingly and sealed at the outlet; a vertical strip-shaped protrusion corresponding to the right side of the oil-water cooler body, and a vertical water level indicator corresponding to the protrusion. The water level chamber has a bottom that is connected to the water storage chamber on the right side of the oil-water cooler body, and a liquid level sensor is installed on the top of the water level chamber. A water supply tank is installed on the left side of the oil-water cooler body, and a water pump is installed on the top of the water supply tank. The inlet of the water pump is connected to the water supply tank, and the outlet of the water pump is connected to the top of the water storage chamber on the left side of the oil-water cooler body through a water supply pipe. A PLC controller for controlling the water pump is also provided on the rear side of the oil-water cooler body, and the liquid level sensor is electrically connected to the PLC controller.
[0009] Furthermore, the filter assembly includes a filter screen frame and a filter box. The filter box has a water inlet hole for connecting the water inlet and the water storage chamber. The center of the water inlet hole in the filter box has a rectangular groove with a top opening. The filter screen frame has a filter screen in the center. Rubber sealing gaskets are installed on the front and rear sides of the filter screen frame. A pull-out head is provided on the top of the filter screen frame. The filter screen frame is slidably inserted into the rectangular groove. The top two sides of the filter box have clamping mechanisms for clamping the filter screen frame.
[0010] Furthermore, the clamping mechanism includes a threaded rod, and fixed blocks are correspondingly provided on both sides of the top of the filter box. A threaded rod is fixedly fixed on the top of the fixed blocks. An L-shaped pressure block is slidably sleeved on the threaded rod. A compression spring is correspondingly installed between the L-shaped pressure block and the fixed blocks. The compression spring is correspondingly sleeved on the threaded rod. A wing nut is also correspondingly threaded on the threaded rod. The wing nut is correspondingly pressed against the top of the L-shaped pressure block. Tightening the wing nut will press the other end of the L-shaped pressure block against the top of the filter frame. Loosening the wing nut and prying open the L-shaped pressure block will allow the filter frame to be disassembled and assembled.
[0011] Furthermore, an oil storage chamber is provided in the middle of the body of the oil-water cooler. An oil inlet and an oil outlet are respectively provided on the top two sides of the oil storage chamber. Multiple heat exchange tubes are evenly arranged in the oil storage chamber, and the two ends of the heat exchange tubes are connected to the water storage chambers on both sides of the body of the oil-water cooler.
[0012] Furthermore, the probe of the liquid level sensor is installed in the water level cavity, and a ring float is fitted on the probe. When the liquid level sensor detects a drop in the liquid level in the water level cavity, it transmits the signal to the PLC controller, which then controls the water pump to start and replenish water to the water storage cavity of the oil-water cooler body.
[0013] Furthermore, a solenoid valve is installed on the water supply pipe. The solenoid valve is electrically connected to the PLC controller. When no water is being supplied, the PLC controller controls the solenoid valve to close. When water is being supplied, the PLC controller controls the solenoid valve to open.
[0014] 3. Beneficial effects:
[0015] Compared with the prior art, the technical solution provided by this utility model has the following advantages:
[0016] This utility model features a reasonable design. For a horizontally placed oil-water cooler, a water level chamber and a liquid level sensor are installed on one side, while a water replenishment tank, water pump, and water replenishment pipe are installed on the other side. This allows for timely and effective automatic water replenishment when the water level in the cooler's storage chamber drops, eliminating the need for manual replenishment. Its operation is accurate and convenient. Furthermore, the inclusion of filter components such as a threaded rod, compression spring, L-shaped pressure block, filter screen frame, and wing nut effectively filters the cooling water entering the cooler, preventing impurities from affecting the cooler's cooling effect and lifespan. The filter screen frame is also easy to install and remove for cleaning and replacement. The overall design is ingenious, convenient to use, and highly practical.
[0017] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the automatic water replenishment oil-water cooler of this utility model;
[0019] Figure 2 This is a schematic diagram of the overall structure of the automatic water replenishment oil-water cooler of this utility model from another perspective;
[0020] Figure 3 This is a cross-sectional structural schematic diagram of the automatic water replenishment oil-water cooler of this utility model;
[0021] Figure 4 This is a partial cross-sectional view of the water level cavity of this utility model;
[0022] Figure 5 This is a partially enlarged structural diagram of the filter assembly of this utility model during installation;
[0023] Figure 6 This is a partially enlarged structural diagram of the filter assembly of this utility model during disassembly.
[0024] Figure label:
[0025] Oil-water cooler body; 101, oil inlet; 102, oil outlet; 103, water inlet; 104, water outlet; 105, base; 106, water storage chamber; 107, oil storage chamber; 108, heat exchange tube; 2, water supply tank; 3, water pump; 4, water supply pipe; 5, strip-shaped protrusion; 501, water level chamber; 502, glass plate; 6, liquid level sensor; 601, probe rod; 602, annular float; 7, filter box; 701, rectangular groove; 8, fixing block; 9, threaded rod; 10, compression spring; 11, L-shaped pressure block; 12, filter screen frame; 1201, pull-out head; 1202, filter screen; 1203, rubber sealing gasket; 13, wing nut. Detailed Implementation
[0026] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.
[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example
[0030] See attached document Figure 1-6 This embodiment of an automatic water-replenishing oil-water cooler includes an oil-water cooler body 1. A base 105 is provided at the bottom of the oil-water cooler body 1. Water storage chambers 106 are provided on both sides of the oil-water cooler body 1. An inlet 103 and an outlet 104 are respectively provided at the front of the water storage chambers 106 on both sides of the oil-water cooler body 1. A removable and replaceable filter assembly is sealed and installed at the inlet 103. A vertical strip-shaped protrusion 5 is provided on the right side of the oil-water cooler body 1. A vertical water level chamber 501 is provided inside the strip-shaped protrusion 5. The bottom of 501 is connected to the water storage chamber 106 on the right side of the oil-water cooler body 1. A liquid level sensor 6 is installed on the top of the water level chamber 501. A water supply tank 2 is installed on the left side of the oil-water cooler body 1. A water pump 3 is installed on the top of the water supply tank 2. The inlet of the water pump 3 is connected to the water supply tank 2. The outlet of the water pump 3 is connected to the top of the water storage chamber 106 on the left side of the oil-water cooler body 1 through the water supply pipe 4. A PLC controller for controlling the water pump 3 is also provided on the rear side of the oil-water cooler body 1. The liquid level sensor 6 is electrically connected to the PLC controller.
[0031] Specifically, the filter assembly includes a filter frame 12 and a filter box 7. The filter box 7 has a water inlet hole for connecting the water inlet 103 and the water storage chamber 106. The center of the water inlet hole in the filter box 7 is provided with a rectangular groove 701 with a top opening. The filter frame 12 has a filter screen 1202 in the center. Rubber sealing gaskets 1203 are installed on the front and rear sides of the filter frame 12. The top of the filter frame 12 is provided with a pull head 1201. The filter frame 12 is slidably inserted into the rectangular groove 701. The top two sides of the filter box 7 are provided with clamping mechanisms for pressing the filter frame 12.
[0032] The clamping mechanism includes a threaded rod 9. Fixing blocks 8 are provided on both sides of the top of the filter box 7. The threaded rod 9 is fixed on the top of the fixing blocks 8. An L-shaped pressure block 11 is slidably sleeved on the threaded rod 9. A compression spring 10 is installed between the L-shaped pressure block 11 and the fixing blocks 8. The compression spring 10 is sleeved on the threaded rod 9. A wing nut 13 is also threadedly installed on the threaded rod 9. The wing nut 13 is pressed against the top of the L-shaped pressure block 11. Tightening the wing nut 13 will press the other end of the L-shaped pressure block 11 against the top of the filter screen frame 12. Loosening the wing nut 13 and prying open the L-shaped pressure block 11 will allow the filter screen frame 12 to be disassembled and assembled.
[0033] The oil-water cooler body 1 has an oil storage chamber 107 in the middle. The top two sides of the oil storage chamber 107 are respectively provided with an oil inlet 101 and an oil outlet 102. Multiple heat exchange tubes 108 are evenly arranged in the oil storage chamber 107. The heat exchange tubes 108 can be made of copper. The two ends of the heat exchange tubes 108 are connected to the water storage chambers 106 on both sides of the oil-water cooler body 1.
[0034] The probe 601 of the liquid level sensor 6 is installed in the water level cavity 501. A ring float 602 is fitted on the probe 601. When the liquid level sensor 6 detects that the liquid level in the water level cavity 501 has dropped to a certain height, it transmits the signal to the PLC controller. The PLC controller then controls the water pump 3 to start and replenish water to the water storage cavity 106 of the oil-water cooler body 1.
[0035] A solenoid valve is installed on the water supply pipe 4, and the solenoid valve is electrically connected to the PLC controller. When no water is being supplied, the PLC controller controls the solenoid valve to close; when water is being supplied, the PLC controller controls the solenoid valve to open.
[0036] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An oil-water cooler with automatic water replenishment, characterized in that: The system includes an oil-water cooler body (1), with a base (105) at the bottom of the body. Water storage chambers (106) are located on both sides of the body. Inlet (103) and outlet (104) are located at the front of the water storage chambers (106) on both sides of the body. A removable and replaceable filter assembly is sealed at the inlet (103). A vertical strip-shaped protrusion (5) is located on the right side of the body. A vertical water level chamber (501) is located inside the strip-shaped protrusion (5). The bottom of the water level chamber (501) is connected to the bottom of the oil-water cooler body. The water storage chamber (106) on the right side of the body (1) is connected to the water level chamber (501), and a liquid level sensor (6) is installed on the top of the water level chamber (501); a water supply tank (2) is installed on the left side of the oil-water cooler body (1), and a water pump (3) is installed on the top of the water supply tank (2). The water inlet of the water pump (3) is connected to the water supply tank (2), and the water outlet of the water pump (3) is connected to the top of the water storage chamber (106) on the left side of the oil-water cooler body (1) through the water supply pipe (4); a PLC controller for controlling the water pump (3) is also provided on the rear side of the oil-water cooler body (1), and the liquid level sensor (6) is electrically connected to the PLC controller.
2. The oil-water cooler with automatic water replenishment according to claim 1, characterized in that: The filter assembly includes a filter screen frame (12) and a filter box (7). The filter box (7) has an inlet hole for connecting the water inlet (103) and the water storage chamber (106). The center of the inlet hole in the filter box (7) is provided with a rectangular groove (701) with a top opening. The filter screen frame (12) has a filter screen (1202) in the center. Rubber sealing gaskets (1203) are installed on the front and rear sides of the filter screen frame (12). The top of the filter screen frame (12) is provided with a pull head (1201). The filter screen frame (12) is sealed and slidably inserted into the rectangular groove (701). The top two sides of the filter box (7) are provided with a clamping mechanism for clamping the filter screen frame (12).
3. The oil-water cooler with automatic water replenishment according to claim 2, characterized in that: The pressing mechanism includes a threaded rod (9), and fixed blocks (8) are provided on both sides of the top of the filter box (7). The threaded rod (9) is fixed on the top of the fixed block (8). An L-shaped pressure block (11) is slidably sleeved on the threaded rod (9). A compression spring (10) is installed between the L-shaped pressure block (11) and the fixed block (8). The compression spring (10) is sleeved on the threaded rod (9). A wing nut (13) is also threadedly installed on the threaded rod (9). The wing nut (13) is pressed against the top of the L-shaped pressure block (11). Tightening the wing nut (13) will press the other end of the L-shaped pressure block (11) against the top of the filter screen frame (12). Loosening the wing nut (13) and prying open the L-shaped pressure block (11) will allow the filter screen frame (12) to be disassembled and assembled.
4. An oil-water cooler with automatic water replenishment according to claim 1, characterized in that: The oil-water cooler body (1) has an oil storage chamber (107) in the middle. The top two sides of the oil storage chamber (107) are respectively provided with an oil inlet (101) and an oil outlet (102). Multiple heat exchange tubes (108) are evenly arranged in the oil storage chamber (107). The two ends of the heat exchange tubes (108) are connected to the water storage chambers (106) on both sides of the oil-water cooler body (1).
5. An oil-water cooler with automatic water replenishment according to claim 1, characterized in that: The probe (601) of the liquid level sensor (6) is installed in the water level chamber (501). A ring float (602) is fitted on the probe (601). When the liquid level sensor (6) detects that the liquid level in the water level chamber (501) has dropped, it transmits the signal to the PLC controller. The PLC controller then controls the water pump (3) to start and replenish water to the water storage chamber (106) of the oil-water cooler body (1).
6. An oil-water cooler with automatic water replenishment according to claim 1, characterized in that: A solenoid valve is installed on the water supply pipe (4). The solenoid valve is electrically connected to the PLC controller. When no water is supplied, the PLC controller controls the solenoid valve to close. When water is supplied, the PLC controller controls the solenoid valve to open.