Energy-saving cooling system

Abstract

The energy-saving cooling system comprises an oil tank, a cooler, a recycling box and a first thermostatic valve, the oil tank comprises a tank body, an oil return pipe and an oil conveying pipe, the oil return pipe and the oil conveying pipe are connected with the tank body, hydraulic oil is stored in the tank body, the oil return pipe is used for inputting the high-temperature hydraulic oil into the tank body, and the oil conveying pipe is used for conveying the hydraulic oil in the tank body to the outside; the cooler is used for generating cooling water and provided with a first cooling pipe, and the first cooling pipe is used for conveying the cooling water; the recycling box is provided with a water pipe; a water inlet of the first thermostatic valve is connected with the first cooling pipe and the water conveying pipe to control the water temperature, and a heat exchange pipe is arranged at a water outlet of the first thermostatic valve and penetrates through the box body. The mechanical first thermostatic valve can be adopted to replace a traditional electromagnetic valve, the service life of the cooling system is prolonged, and the problem of failure of the cooling system is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling systems, and in particular to an energy-saving cooling system. Background Technology

[0002] Hydraulic systems are widely used in various industrial equipment, such as machine tools, metallurgical machinery, construction machinery, and presses.

[0003] During operation, hydraulic systems experience energy losses such as mechanical friction from the oil pump, throttling losses from hydraulic valves, and internal leaks, all of which are converted into heat, causing a significant increase in hydraulic oil temperature. In particular, the return oil from actuators (such as hydraulic cylinders) after performing their work typically carries a large amount of heat back to the tank.

[0004] Some hydraulic systems use water cooling systems to dissipate heat and lower the temperature of the hydraulic oil. Conventionally, a water cooling system has a heat exchanger installed in the hydraulic system's oil circuit. When the detected oil temperature reaches a certain level, the control system issues a command to open the solenoid valve on the cooling water line, allowing cooling water to flow into the heat exchanger and begin cooling. This allows the higher-temperature hydraulic oil to exchange heat with the lower-temperature cooling water in a non-contact manner within the heat exchanger, thereby reducing the oil temperature.

[0005] The moving parts inside the solenoid valve will wear down under frequent opening and closing actions, making the solenoid valve prone to failure. Frequent failure of the solenoid valve forces the equipment to be shut down for maintenance and replacement of spare parts more often, which not only increases maintenance costs, but also, the failure of the cooling system may lead to uncontrolled oil temperature, thereby causing the hydraulic system to malfunction. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an energy-saving cooling system that uses a mechanical first thermostatic valve to replace the traditional solenoid valve, thereby improving the service life of the cooling system and avoiding cooling system failure.

[0007] An energy-saving cooling system according to an embodiment of the present invention includes: an oil tank, comprising a tank body, a return oil pipe and an oil supply pipe connected to the tank body, wherein the tank body stores hydraulic oil, the return oil pipe is used to input high-temperature hydraulic oil into the tank body, and the oil supply pipe is used to transport the hydraulic oil in the tank body to the outside; a cooler, the cooler being used to generate cooling water, the cooler having a first cooling pipe for transporting cooling water; a recovery tank, the recovery tank being provided with a water supply pipe; and a first thermostatic valve, the inlet of the first thermostatic valve being connected to the first cooling pipe and the water supply pipe to control the water temperature, and the outlet of the first thermostatic valve being provided with a heat exchange pipe, the heat exchange pipe penetrating the tank body.

[0008] An energy-saving cooling system according to an embodiment of the present invention has at least the following beneficial effects:

[0009] This invention, by incorporating an oil tank, cooler, recovery tank, and a first thermostatic valve, allows used hydraulic oil at higher temperatures to flow back into the tank via a return pipe. Simultaneously, the cooler generates cooling water, which flows through a first cooling pipe to the first thermostatic valve. The recovery tank also delivers water to the first thermostatic valve via a water supply pipe. The first thermostatic valve mixes two types of water at different temperatures to obtain cooling water at a fixed temperature, preventing significant temperature fluctuations. This fixed-temperature cooling water then exchanges heat with the hydraulic oil in the tank via a heat exchange pipe, reducing the hydraulic oil temperature and ensuring it remains within a specified range. Thus, by replacing the traditional solenoid valve with a mechanical first thermostatic valve, the system automatically adjusts the cooling water flow based on the principle of thermal expansion and contraction, eliminating the need for frequent power-on / off switching. This fundamentally solves the problems of solenoid valve wear and failure, and frequent maintenance required in the prior art, thereby improving system reliability.

[0010] According to an embodiment of the present invention, an energy-saving cooling system is provided, wherein the cooler has a second cooling pipe, and a transfer box is provided at the outlet end of the second cooling pipe. The transfer box is used to contain cooling water, and the oil return pipe passes through the transfer box and is connected to the box body.

[0011] According to an embodiment of the present invention, an energy-saving cooling system is provided, wherein the oil return pipe has a spiral section, and the spiral section is located inside the transfer box.

[0012] According to an embodiment of the present invention, an energy-saving cooling system is provided in which the transfer box is provided with a water outlet pipe, and the water outlet pipe is connected to the recycling box.

[0013] An energy-saving cooling system according to an embodiment of the present invention further includes a water inlet pipe, the water inlet pipe being equipped with a filter, and the water inlet pipe being connected to the cooler.

[0014] According to an embodiment of the present invention, an energy-saving cooling system is provided inside the housing, wherein a temperature sensor is installed inside the housing to check the temperature of the hydraulic oil inside the housing.

[0015] According to an embodiment of the present invention, an energy-saving cooling system is provided in which the first cooling pipe is equipped with a variable frequency pump, and the variable frequency pump and the first cooling pipe cooperate to control the output of cooling water.

[0016] According to an embodiment of the present invention, an energy-saving cooling system is provided in which the oil pipeline has a heat dissipation section and the heat dissipation section is provided with heat dissipation fins.

[0017] According to an embodiment of the present invention, an energy-saving cooling system is provided in which the heat exchange tube extends spirally within the casing.

[0018] According to an embodiment of the present invention, an energy-saving cooling system is provided, wherein a return water pipe is connected between the recovery tank and the heat exchange tube, and the recovery tank recovers the cooling water of the heat exchange tube through the return water pipe.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an energy-saving cooling system according to an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 A partial structural schematic diagram of an energy-saving cooling system is shown.

[0023] Attached reference numerals: 100-box body, 110-return oil pipe, 120-oil supply pipe, 130-transfer box, 140-cooler, 150-first cooling pipe, 160-recovery box, 170-water supply pipe, 180-first thermostatic valve, 190-heat exchange pipe, 200-spiral tube section, 210-filter, 220-water outlet pipe, 230-temperature sensor, 240-variable frequency pump, 250-heat dissipation section, 260-water inlet pipe, 270-second cooling pipe, 280-return water pipe. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] An energy-saving cooling system according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0029] Reference Figure 1 and Figure 2 The present invention aims to provide an embodiment of an energy-saving cooling system.

[0030] An energy-saving cooling system according to an embodiment of this utility model includes an oil tank, a cooler 140, a recovery tank 160, and a first thermostatic valve 180. The oil tank includes a tank body 100, a return oil pipe 110 connected to the tank body 100, and an oil supply pipe 120. The tank body 100 stores hydraulic oil. The return oil pipe 110 is used to input high-temperature hydraulic oil into the tank body 100, and the oil supply pipe 120 is used to transport the hydraulic oil in the tank body 100 to the outside. The cooler 140 is used to generate cooling water and has a first cooling pipe 150 for transporting cooling water. The recovery tank 160 is provided with a water supply pipe 170. The inlet of the first thermostatic valve 180 is connected to the first cooling pipe 150 and the water supply pipe 170 to control the water temperature. The outlet of the first thermostatic valve 180 is provided with a heat exchange pipe 190, which penetrates the tank body 100.

[0031] Understandably, this utility model, by setting up an oil tank, cooler 140, recovery tank 160, and first thermostatic valve 180, allows used hydraulic oil with higher temperatures to flow into the tank 100 through the return oil pipe 110. Simultaneously, the cooler 140 generates cooling water, which enters the first thermostatic valve 180 through the first cooling pipe 150. Furthermore, the recovery tank 160 delivers water to the first thermostatic valve 180 through the water supply pipe 170. The first thermostatic valve 180 mixes two types of water at different temperatures to obtain cooling water at a fixed temperature, preventing large fluctuations in the cooling water temperature. This fixed-temperature cooling water exchanges heat with the hydraulic oil in the tank 100 through the heat exchange pipe 190 to lower the hydraulic oil temperature and ensure that the hydraulic oil remains within a specified range. Thus, by using a mechanical first thermostatic valve 180 instead of a traditional solenoid valve, the cooling water flow is automatically adjusted based on the principle of thermal expansion and contraction, eliminating the need for frequent power-on / off switching. This fundamentally solves the problems of solenoid valve wear and failure, and frequent maintenance in the prior art, improving system reliability.

[0032] In some embodiments of this utility model, the cooler 140 has a second cooling pipe 270, and a transfer box 130 is provided at the water outlet end of the second cooling pipe 270. The transfer box 130 is used to contain cooling water, and the oil return pipe 110 passes through the transfer box 130 and is connected to the box body 100.

[0033] Understandably, the cooler 140 supplies cooling water to the second cooling pipe 270, and the cooling water from the second cooling pipe 270 is delivered to the transfer box 130. When the high-temperature hydraulic oil from the return oil pipe 110 passes through the area inside the transfer box 130, the cooling water in the transfer box 130 can absorb the heat of the hydraulic oil from the return oil pipe 110, and the hydraulic oil is cooled down before flowing into the box 100.

[0034] In some embodiments of this utility model, the return oil pipe 110 has a spiral tube section 200, which is located inside the transfer box 130. It can be understood that the spiral tube section 200 greatly increases the heat exchange area and residence time of the return oil pipe 110 in the transfer box 130, thereby significantly improving the heat exchange efficiency between the oil and the cooling water.

[0035] In some embodiments of this utility model, the transfer box 130 is provided with a water outlet pipe 220, which is connected to the recovery box 160. It can be understood that after the cooling water of the transfer box 130 absorbs the heat of the oil, it flows back to the recovery box 160 through the water outlet pipe 220, so as to realize the full recycling of cooling water.

[0036] In some embodiments of this utility model, a water inlet pipe 260 is also included. The water inlet pipe 260 is equipped with a filter 210. The water inlet pipe 260 is connected to the cooler 140. It can be understood that the filter 210 of the water inlet pipe 260 can intercept impurities in the water, prevent the cooler 140, pipes and thermostatic valve from becoming clogged, reduce the failure rate, extend the equipment life and reduce maintenance costs.

[0037] In some embodiments of this utility model, a temperature sensor 230 is provided inside the housing 100. The temperature sensor 230 is used to check the temperature of the hydraulic oil inside the housing 100. It can be understood that the temperature sensor 230 monitors the oil temperature in the tank in real time, providing data for the start-up and shutdown of the cooling system or the speed adjustment of the variable frequency pump 240, avoiding over-cooling or under-cooling, optimizing energy consumption and protecting the hydraulic system.

[0038] In some embodiments of this utility model, the first cooling pipe 150 is equipped with a variable frequency pump 240. The variable frequency pump 240 and the first cooling pipe 150 work together to control the output of cooling water. It can be understood that the variable frequency pump 240 can dynamically adjust the cooling water flow rate according to the oil temperature change, significantly reduce the pump energy consumption, and achieve refined temperature management.

[0039] In some embodiments of this utility model, the oil pipeline 120 has a heat dissipation section 250, which is provided with heat dissipation fins. It can be understood that the fins of the heat dissipation section 250 of the oil pipeline 120 enhance natural heat dissipation by increasing the surface area, thereby reducing the need for active cooling and further reducing system energy consumption.

[0040] In some embodiments of this utility model, the heat exchange tube 190 extends spirally within the housing 100. It can be understood that the spirally extended heat exchange tube 190 extends the cooling water path and residence time within the oil tank, increases the heat exchange area with the hydraulic oil, ensures uniform oil temperature and rapid temperature reduction, and improves cooling efficiency.

[0041] In some embodiments of this utility model, a return water pipe 280 is connected between the recovery tank 160 and the heat exchange tube 190. The recovery tank 160 recovers the cooling water of the heat exchange tube 190 through the return water pipe 280, thereby realizing the full recycling of cooling water.

[0042] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An energy-saving cooling system, characterized in that, include: The oil tank includes a tank body (100), a return oil pipe (110) and an oil supply pipe (120) connected to the tank body (100). The tank body (100) stores hydraulic oil. The return oil pipe (110) is used to input high-temperature hydraulic oil into the tank body (100). The oil supply pipe (120) is used to transport the hydraulic oil in the tank body (100) to the outside. A cooler (140) for generating cooling water, the cooler (140) having a first cooling pipe (150) for conveying cooling water; A recycling bin (160) is provided with a water supply pipe (170); The first thermostatic valve (180) has its inlet connected to the first cooling pipe (150) and the water supply pipe (170) to control the water temperature. The outlet of the first thermostatic valve (180) is provided with a heat exchange pipe (190) that penetrates the housing (100).

2. The energy-saving cooling system according to claim 1, characterized in that, The cooler (140) has a second cooling pipe (270), and a transfer box (130) is provided at the outlet end of the second cooling pipe (270). The transfer box (130) is used to hold cooling water, and the return oil pipe (110) passes through the transfer box (130) and is connected to the box body (100).

3. The energy-saving cooling system according to claim 2, characterized in that, The return oil pipe (110) has a spiral section (200) located inside the transfer box (130).

4. The energy-saving cooling system according to claim 2, characterized in that, The transfer box (130) is equipped with a water outlet pipe (220), which is connected to the recycling box (160).

5. The energy-saving cooling system according to claim 1, characterized in that, It also includes a water inlet pipe (260), which is equipped with a filter (210) and is connected to the cooler (140).

6. The energy-saving cooling system according to claim 1, characterized in that, A temperature sensor (230) is installed inside the housing (100) to check the temperature of the hydraulic oil inside the housing (100).

7. The energy-saving cooling system according to claim 1, characterized in that, The first cooling pipe (150) is equipped with a variable frequency pump (240), and the variable frequency pump (240) and the first cooling pipe (150) work together to control the output of cooling water.

8. The energy-saving cooling system according to claim 1, characterized in that, The oil pipeline (120) has a heat dissipation section (250) with heat dissipation fins.

9. The energy-saving cooling system according to claim 1, characterized in that, The heat exchange tube (190) extends spirally within the housing (100).

10. An energy-saving cooling system according to claim 1, characterized in that, A return water pipe (280) is connected between the recovery tank (160) and the heat exchange tube (190), and the recovery tank (160) recovers the cooling water of the heat exchange tube (190) through the return water pipe (280).

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