Cooler for hoisting machinery

Abstract

The utility model discloses a kind of coolers for hoisting machinery, it is related to plate-fin heat exchanger technical field, including flow inlet head;Flow inlet head connects the liquid inlet of cooling system front pass and core body hot runner;Flow inlet head includes liquid inlet channel, slow-flow component and liquid outlet chamber;Slow-flow component is equipped with mutually interconnected liquid inlet and liquid outlet;The liquid inlet and liquid outlet of slow-flow component correspond to the liquid inlet of cooling system front pass and hot runner respectively;Slow-flow component is internally provided with elastic component, and the elastic end of elastic component is blocked and set in the liquid inlet of slow-flow component;When the elastic end of elastic component can be through telescopic motion and make the liquid inlet of slow-flow component and the liquid outlet of slow-flow component between block or through.This utility model provides a kind of cooler for hoisting machinery, by setting elastic component in flow inlet head and entering core body after fluid slow speed, can effectively avoid too fast flow rate damage fin.

Description

Technical Field

[0001] This utility model relates to the field of plate-fin heat exchanger technology, and in particular to a cooler for lifting machinery. Background Technology

[0002] A plate-fin heat exchanger is a highly efficient and compact heat exchange device that enhances heat transfer through fins and separates fluid channels with baffles. A plate-fin heat exchanger consists of a core and end caps, with the end caps located at both ends of the flow channels within the core. During operation, the hot fluid enters the hot runner from one end of the end cap. As the hot fluid passes through the hot runner, it conducts heat to the cold runner, where the heat is carried away by the cold fluid. Coolers used in lifting machinery typically employ air as the cold fluid, which passes through the cold runner to cool the oil in the hot runner.

[0003] Chinese utility model patent application No. 201020231585.5 discloses a crusher with a cooling device. Although this patent can cool hot lubricating oil, during the cooling process, the high inlet temperature and fast flow rate of the lubricating oil can easily cause thermal shock to the fins of the hot runner, resulting in fin damage. In addition, the excessively fast flow rate will reduce the contact time between the lubricating oil and the fins, so that the heat cannot be transferred to the fins in time, affecting the heat dissipation effect. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a cooler for lifting machinery. By setting an elastic component in the inlet end cap to slow down the flow of fluid before it enters the core, it can effectively avoid damage to the fins due to excessively fast flow rate.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a cooler for lifting machinery, including an inlet end cap; the inlet end cap connects the front channel of the cooling system to the liquid inlet of the hot runner of the core; the inlet end cap includes an inlet channel, a flow-retarding component, and an outlet chamber; the flow-retarding component has an inlet and an outlet that are interconnected; the inlet of the flow-retarding component is connected to the front channel of the cooling system through the inlet channel; the outlet of the flow-retarding component is connected to the inlet of the hot runner through the outlet chamber; an elastic component is provided inside the flow-retarding component, and the elastic end of the elastic component is sealed inside the inlet of the flow-retarding component; When the elastic end of the elastic component is in a free state, the elastic end of the elastic component will block the connection between the liquid inlet of the slow flow component and the liquid outlet of the slow flow component. When the elastic end of the elastic component is in a compressed state, the inlet of the slow-flow component and the outlet of the slow-flow component are connected.

[0006] Furthermore, the flow-slowing component includes a housing; a horizontal partition plate is arranged inside the housing, dividing the internal space of the housing into an upper cavity and a lower cavity stacked vertically; the elastic component includes an inlet box and a spring; the upper cavity has an outlet connecting to the hot runner; the lower cavity has an inlet connecting to the front channel of the cooling system; the partition plate has a first flow port connecting the upper cavity and the lower cavity; the inlet box has an inlet at its front; the inlet box is arranged inside the lower cavity along the inlet direction of the lower cavity; in the inlet direction of the lower cavity, the inner wall of the lower cavity is in contact with the outer side of the inlet box, and the inlet of the inlet box is arranged in the same direction as the inlet of the lower cavity; the inlet box serves as the elastic end of the elastic component, and the extension and retraction direction of the spring is parallel to the inlet direction of the lower cavity; one extension and retraction end of the spring is connected to the rear of the inlet box, and the other extension and retraction end of the spring is connected to the inner wall of the lower cavity; the inlet box has a second flow port on its side facing the partition plate. When the spring is in a free state, the first flow port and the second flow port do not overlap. When the spring is compressed, the first and second flow ports overlap.

[0007] Furthermore, a sealing strip is embedded in the inner wall of the lower cavity; the sealing strip is distributed circumferentially around the inlet box; the circumferential axis of the sealing strip is in the same direction as the inlet direction of the lower cavity; the sealing strip is located between the first flow port and the liquid inlet of the lower cavity.

[0008] Furthermore, there are several second flow ports, and the number is greater than 1; in the flow direction of the lower cavity, all the second flow ports are arranged sequentially, and the opening area of ​​all the second flow ports gradually increases.

[0009] Furthermore, multiple hot runners are arranged along the height direction; there are several slow flow components, and the number is greater than 1; the slow flow components are arranged along the height direction; the liquid inlet channel is set along the height direction; the liquid inlet of the liquid inlet channel is located at the top of the liquid inlet channel; the liquid outlet of the liquid inlet channel is located on the horizontal side of the liquid inlet channel; the liquid outlet of the liquid inlet channel is connected to the liquid inlet of all slow flow components.

[0010] The above technical solution has the following advantages or beneficial effects: The present invention provides a cooler for lifting machinery, relating to the field of plate-fin heat exchanger technology, including an inlet end cap; the inlet end cap connects the front channel of the cooling system with the liquid inlet of the hot runner of the core; the inlet end cap includes an inlet channel, a flow-retarding component, and an outlet chamber; the flow-retarding component has an inlet and an outlet that are interconnected; the inlet of the flow-retarding component is connected to the front channel of the cooling system through the inlet channel; the outlet of the flow-retarding component is connected to the inlet of the hot runner through the outlet chamber; an elastic component is provided inside the flow-retarding component, and the elastic end of the elastic component is sealed inside the inlet of the flow-retarding component; when the elastic end of the elastic component is in a free state, the elastic end of the elastic component blocks the connection between the inlet and the outlet of the flow-retarding component; when the elastic end of the elastic component is in a compressed state, the inlet and the outlet of the flow-retarding component are connected. This invention provides a cooler for lifting machinery. By setting an elastic component inside the inlet end cap to slow down the flow of fluid before it enters the core, it can effectively prevent damage to the fins from excessively fast flow rates. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0012] Figure 1 This is an overall structural diagram of a cooler for lifting machinery provided in Embodiment 1 of this utility model; Figure 2 This is a cross-sectional view of the inlet end cap of a cooler for lifting machinery provided in Embodiment 1 of this utility model; Figure 3 A cross-sectional view of a flow-retarding component for a cooler for lifting machinery provided in Embodiment 1 of this utility model; Figure 4 This is a structural diagram of the inlet box of a cooler for lifting machinery provided in Embodiment 1 of this utility model; Figure 1-4 Includes: 1. Inlet end cap; 11. Inlet channel; 12. Flow buffer assembly; 13. Outlet chamber; 2. Box body; 21. Divider plate; 22. Upper cavity; 23. Lower cavity; 24. First flow port; 3. Inlet box; 31. Spring; 32. Second flow port; 4. Sealing strip; 5. Core. Detailed Implementation

[0013] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0014] Example 1: like Figure 1-4 As shown: This utility model provides a cooler for lifting machinery, including an inlet end cap 1; the inlet end cap 1 connects the front channel of the cooling system to the liquid inlet of the hot runner of the core 5; the inlet end cap 1 includes an inlet channel 11, a flow-retarding component 12, and an outlet chamber 13; the flow-retarding component 12 is provided with an inlet and an outlet that are interconnected; the inlet of the flow-retarding component 12 is connected to the front channel of the cooling system through the inlet channel 11; the outlet of the flow-retarding component 12 is connected to the inlet of the hot runner through the outlet chamber 13; an elastic component is provided inside the flow-retarding component 12, and the elastic end of the elastic component is sealed inside the inlet of the flow-retarding component 12; when the elastic end of the elastic component is in a free state, the elastic end of the elastic component blocks the connection between the inlet and the outlet of the flow-retarding component 12; when the elastic end of the elastic component is in a compressed state, the inlet and the outlet of the flow-retarding component 12 are connected.

[0015] It should be noted that the cooler for lifting machinery provided by this utility model is essentially a conventional plate-fin heat exchanger. Its cold flow channel relies on the fan to blow air to cool the oil in the hot flow channel. The improvement over the prior art lies in the inlet end cap 1. The core and outlet end cap are conventional existing technologies, so they will not be described in detail.

[0016] During operation of the cooler for lifting machinery provided by this utility model, the cooling system pumps high-temperature engine oil into the inlet channel 11. Under pressure, the oil flows into the inlet of the slow-flow component 12. Because the elastic end of the elastic component is sealed within the inlet of the slow-flow component 12, the oil compresses the elastic component. During the accumulation of elastic potential energy in the elastic component, the initial kinetic energy of the oil is consumed, thus reducing the oil flow rate. When the elastic component is compressed to a set degree, the elastic end of the elastic component is unsealed, allowing communication between the inlet and outlet of the slow-flow component 12. The slow-flowing oil can then continue to flow into the outlet chamber 13, where it is further distributed to various hot runners. This protects the fins from damage and increases the contact time between the oil and the fins, improving heat exchange efficiency.

[0017] As a specific implementation of the flow-slowing component 12, in a preferred embodiment, the flow-slowing component 12 includes a housing 2; a partition plate 21 is horizontally arranged inside the housing 2, dividing the internal space of the housing 2 into an upper cavity 22 and a lower cavity 23 stacked vertically; the elastic component includes an inlet box 3 and a spring 31; the upper cavity 22 is provided with an outlet communicating with the hot runner; the lower cavity 23 is provided with an inlet communicating with the front of the cooling system; the partition plate 21 has a first flow port 24 communicating with the upper cavity 22 and the lower cavity 23; the inlet box 3 has an inlet at its front; the inlet box 3 is arranged inside the lower cavity 23 along the inlet direction of the lower cavity 23; the inlet of the lower cavity 23... In terms of direction, the inner wall of the lower cavity 23 is in contact with the outer side of the inlet box 3, and the liquid inlet of the inlet box 3 is arranged in the same direction as the liquid inlet of the lower cavity 23; the inlet box 3 serves as the elastic end of the elastic component, and the extension and retraction direction of the spring 31 is parallel to the inlet direction of the lower cavity 23; one extension and retraction end of the spring 31 is connected to the rear of the inlet box 3, and the other extension and retraction end of the spring 31 is connected to the inner wall of the lower cavity 23; a second flow port 32 is provided on the side of the inlet box 3 facing the partition plate 21; when the spring 31 is in a free state, the first flow port 24 and the second flow port 32 do not overlap; when the spring 31 is in a compressed state, the first flow port 24 and the second flow port 32 overlap.

[0018] The operation of the flow-retardant component 12 is as follows: Engine oil enters through the inlet of the inlet box 3. Under pump pressure, the oil pushes the inlet box 3 into the lower cavity 23, simultaneously compressing the spring 31. The reaction force provided by the spring 31 during compression slows the oil flow. As the inlet box 3 continues to move until the first outlet 24 and the second outlet 32 ​​overlap in the height direction, the oil in the inlet box 3 can enter the upper cavity 22 and flow out from the outlet of the upper cavity 22. The oil remains slowed by the action of the spring 31 until it enters the upper cavity 22.

[0019] Regarding the above scheme, it should be noted that the engine oil should enter the upper cavity 22 through the inlet box 3, and then the inlet box 3 is disposed as a moving part in the lower cavity 23. To prevent engine oil from entering the lower cavity 23, in the reciprocating movement direction of the inlet box 3, that is, in the flow direction, the outer shell of the inlet box 3 should maintain close contact with the lower cavity 23, and the sum of the frictional resistance generated between the inlet box 3 and the lower cavity 23 and the elastic force of the spring 31 should not exceed the pressure that the engine oil can exert. Moreover, considering the actual machining accuracy and manufacturing cost, the inlet box 3 and the lower cavity 23 do not necessarily need to be completely sealed; as long as the engine oil can be slowed down, the technical effect of protecting the fins can be achieved.

[0020] To ensure the airtightness between the inlet box 3 and the lower cavity 23, in a preferred embodiment, a sealing strip 4 is embedded in the inner wall of the lower cavity 23; the sealing strip 4 is circumferentially distributed around the periphery of the inlet box 3; the circumferential axis of the sealing strip 4 is in the same direction as the flow direction of the lower cavity 23; in the flow direction of the lower cavity 23, the sealing strip 4 is located between the first flow port 24 and the liquid inlet of the lower cavity 23. The sealing strip 4 fills the gap between the inlet box 3 and the lower cavity 23 to ensure a seal, and can be made of a self-lubricating material, reducing the frictional resistance between the inlet box 3 and the lower cavity 23, allowing the movement stroke of the inlet box 3 to accurately reflect the oil pressure.

[0021] Because the oil pressure in the cooling system fluctuates, if the elastic component only releases the blockage when compressed to a set level, and the only difference is whether oil passes through, then it cannot provide different levels of slowing effect for different oil pressures. To solve the above technical problem, in a preferred embodiment, there are several second flow ports 32, with a number greater than one; in the flow direction of the lower cavity 23, all the second flow ports 32 are arranged sequentially, and the opening area of ​​all the second flow ports 32 gradually increases. The principle of this solution is that when the oil pressure is low, there is no need for excessive slowing, and the travel distance of the inlet box 3 is also short due to the low oil pressure. At this time, the opening area of ​​the second flow port 32 that overlaps with the first flow port 24 is large, and low-pressure oil can pass through the opening in large quantities. When the oil pressure is high, the travel distance of the inlet box 3 is also long due to the high oil pressure. At this time, the opening area of ​​the second flow port 32 that overlaps with the first flow port 24 is small, and the flow of high-pressure oil through the opening is restricted, which protects the downstream fins.

[0022] Since hot runners in the prior art are generally arranged in the same direction, and the inlet of the liquid inlet channel 11 cannot be evenly distributed, in order to ensure that the flow rate of each hot runner is more uniform, in a preferred embodiment, multiple hot runners are arranged along the height direction; there are several flow-retarding components 12, and the number is greater than 1; the flow-retarding components 12 are arranged along the height direction; the liquid inlet channel 11 is arranged along the height direction; the liquid inlet of the liquid inlet channel 11 is located at the top of the liquid inlet channel 11; the liquid outlet of the liquid inlet channel 11 is located on the horizontal side of the liquid inlet channel 11; the liquid outlet of the liquid inlet channel 11 is connected to the liquid inlet of all the flow-retarding components 12.

[0023] Since the flow-regulating component 12 in the aforementioned scheme can adjust the flow rate according to the oil pressure, multiple flow-regulating components 12 are arranged in the same direction as each hot runner. The closer to the inlet of the liquid inlet channel 11, the greater the oil pressure at that point. The flow-regulating component 12 at the corresponding position can reduce the flow rate, making the flow of the oil after passing through more uniform in each hot runner, which is beneficial for uniform heat dissipation.

[0024] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application filed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not claimed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

[0025] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A cooler for lifting machinery, characterized in that, Includes an inlet end cap; the inlet end cap connects the front end of the cooling system to the inlet of the hot runner of the core; the inlet end cap includes an inlet channel, a flow-retarding component, and an outlet chamber; the flow-retarding component has an inlet and an outlet that are interconnected. The liquid inlet of the slow-flow component is connected to the front channel of the cooling system through the liquid inlet channel; The outlet of the slow-flow component is connected to the inlet of the hot runner through the outlet chamber. The slow-flow component is internally provided with an elastic component, and the elastic end of the elastic component is sealed inside the liquid inlet of the slow-flow component. When the elastic end of the elastic component is in a free state, the elastic end of the elastic component blocks the connection between the liquid inlet of the slow-flow component and the liquid outlet of the slow-flow component. When the elastic end of the elastic component is in a compressed state, the inlet of the slow-flow component and the outlet of the slow-flow component are connected.

2. The cooler for lifting machinery according to claim 1, characterized in that, The slow-flow component includes a housing; a horizontal partition plate is arranged inside the housing, dividing the internal space of the housing into an upper cavity and a lower cavity stacked vertically; the elastic component includes an inlet box and a spring; the upper cavity has an outlet connecting to a hot runner; the lower cavity has an inlet connecting to the front of the cooling system; the partition plate has a first flow port connecting the upper cavity and the lower cavity; the inlet box has an inlet at its front; The inlet box is disposed inside the lower cavity along the liquid inlet direction of the lower cavity; in the liquid inlet direction of the lower cavity, the inner wall of the lower cavity is in contact with the outer side of the inlet box, and the liquid inlet of the inlet box is disposed in the same direction as the liquid inlet of the lower cavity; The inlet box serves as the elastic end of the elastic component, and the extension and retraction direction of the spring is parallel to the inlet direction of the lower cavity; one extension and retraction end of the spring is connected to the rear of the inlet box, and the other extension and retraction end of the spring is connected to the inner wall of the lower cavity. The inlet box has a second flow port on the side facing the partition plate; When the spring is in a free state, the first flow port and the second flow port do not overlap. When the spring is in a compressed state, the first flow port and the second flow port have an overlapping portion.

3. The cooler for lifting machinery according to claim 2, characterized in that, A sealing strip is embedded in the inner wall of the lower cavity; the sealing strip is distributed circumferentially around the inlet box; the circumferential axis of the sealing strip is in the same direction as the inlet direction of the lower cavity; the sealing strip is located between the first flow port and the liquid inlet of the lower cavity.

4. The cooler for lifting machinery according to claim 2, characterized in that, There are several second flow ports, and the number is greater than 1; in the flow direction of the lower cavity, all the second flow ports are arranged in sequence, and the opening area of ​​all the second flow ports gradually increases.

5. The cooler for lifting machinery according to claim 4, characterized in that, Multiple hot runners are arranged along the height direction; there are several slow flow components, and the number is greater than 1; the slow flow components are arranged along the height direction; the liquid inlet channel is arranged along the height direction; the liquid inlet of the liquid inlet channel is located at the top of the liquid inlet channel; the liquid outlet of the liquid inlet channel is located on the horizontal side of the liquid inlet channel; the liquid outlet of the liquid inlet channel is connected to the liquid inlet of all the slow flow components.

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