Hydraulic oil-air conditioning refrigerant integrated cooling device for excavator

Abstract

This utility model discloses an integrated cooling device for excavator hydraulic oil and air conditioning refrigerant, relating to the field of excavator auxiliary devices. The utility model includes: a tank body with a built-in partition plate dividing the tank body into a first chamber and a second chamber; a horizontal plate within the first chamber dividing the first chamber into an oil inlet chamber and an oil outlet chamber; a refrigerant pipeline including an inlet section extending into the oil inlet chamber, a refrigerant cooling section located in the second chamber and communicating with the inlet section, and an outlet section communicating with the refrigerant cooling section, passing through the outlet chamber, and extending out of the tank body; a hydraulic oil pipeline including a hydraulic oil cooling pipe located in the second chamber, with both ends of the hydraulic oil cooling pipe communicating with the oil inlet chamber and the oil outlet chamber respectively; and an oil inlet pipe communicating with the oil inlet chamber, an oil outlet pipe communicating with the oil outlet chamber, and a water inlet pipe and an water outlet pipe communicating with the second chamber, all provided on the tank body. This addresses the problem of difficulty in adapting to the high-temperature environment inside tunnels for extended periods in relatively confined tunnel spaces.

Description

Technical Field

[0001] This utility model relates to the field of excavator auxiliary devices, specifically, it is an integrated cooling device for excavator hydraulic oil and air conditioning refrigerant. Background Technology

[0002] Excavators working inside tunnels face extreme working environments, and thermal management issues (excessive hydraulic oil temperature and poor air conditioning cooling effect) are common and challenging technical problems.

[0003] The most critical issue is the uniquely harsh thermal environment inside tunnels. Tunnels are relatively enclosed structures, especially long tunnels or near the working face, where fresh air is difficult to enter, and high-temperature exhaust gases (especially engine exhaust, heat emitted by equipment, and heat from blasting dust) cannot be effectively discharged, resulting in the temperature of the entire tunnel space being much higher than the outside ambient temperature.

[0004] The high temperature inside the tunnel causes the hydraulic oil to overheat, resulting in decreased viscosity and increased internal leakage. This also causes the air conditioning refrigerant temperature to rise excessively, significantly reducing the air conditioning's cooling efficiency.

[0005] During tunnel construction, due to the relatively small space inside the tunnel, it is difficult to easily add cooling equipment to the excavator to supplement the hydraulic oil and air conditioning refrigerant for cooling. Utility Model Content

[0006] The purpose of this invention is to provide an integrated cooling device for excavator hydraulic oil and air conditioning refrigerant, in order to solve the problem that the hydraulic oil and air conditioning refrigerant of excavators are difficult to cool in the relatively confined space of tunnels, and are difficult to adapt to the high-temperature environment inside the tunnel for a long time.

[0007] To solve the above problems, the present invention adopts the following technical means:

[0008] An integrated cooling device for excavator hydraulic oil and air conditioning refrigerant includes:

[0009] The tank body has a built-in partition plate that divides the tank body into a first cavity and a second cavity. The first cavity is provided with a horizontal plate that divides the first cavity into an oil inlet cavity and an oil outlet cavity.

[0010] The refrigerant pipeline includes an inlet section extending into the oil inlet chamber, a refrigerant cooling section located in the second chamber and communicating with the inlet section, and an outlet section communicating with the refrigerant cooling section, passing through the oil outlet chamber, and extending out of the tank body;

[0011] The hydraulic oil pipeline includes a hydraulic oil cooling pipe disposed in the second cavity, the two ends of which are respectively connected to the oil inlet cavity and the oil outlet cavity;

[0012] The tank body is provided with an oil inlet pipe communicating with the oil inlet chamber, an oil outlet pipe communicating with the oil outlet chamber, and a water inlet pipe and a water outlet pipe communicating with the second chamber.

[0013] Preferably, a first stabilizing plate and a second stabilizing plate are installed in the second cavity, and the refrigerant cooling section and the hydraulic oil cooling pipe pass through the first stabilizing plate and the second stabilizing plate, respectively.

[0014] Furthermore, a positioning rod is installed inside the second cavity. The positioning rod passes through the first stabilizing plate and the second stabilizing plate in sequence, and the positioning rod is fixedly connected to the first stabilizing plate and the second stabilizing plate.

[0015] Furthermore, the first stabilizing plate and the second stabilizing plate are arranged parallel to each other and alternately in sequence. The first stabilizing plate is the one closest to the partition plate, and the second stabilizing plate is the one furthest from the partition plate. A first channel is formed between the top end of the first stabilizing plate and the inner wall of the second cavity, and a second channel is formed between the bottom end of the second stabilizing plate and the inner wall of the second cavity.

[0016] The inlet pipe is connected to the bottom surface of the tank near the partition plate and is located between the partition plate and the first stabilizing plate. The outlet pipe is connected to the top surface of the tank away from the partition plate and is located between the second stabilizing plate and the end of the second cavity.

[0017] Furthermore, the refrigerant cooling section includes a first U-shaped tube communicating with the liquid inlet section. The liquid outlet end of the first U-shaped tube extends into the oil outlet chamber. The first U-shaped tube is connected to a second U-shaped tube extending into the second chamber via a first bend in the oil outlet chamber. The liquid outlet end of the second U-shaped tube extends into the oil inlet chamber. The liquid outlet end of the second U-shaped tube is connected to a third U-shaped tube extending into the second chamber via a second bend in the oil inlet chamber. The liquid outlet end of the third U-shaped tube extends into the oil outlet chamber and communicates with the liquid outlet section.

[0018] Furthermore, the axes of both the first bend and the second bend are arranged parallel to the partition plate.

[0019] Furthermore, the tank is a horizontal tank, with spherical surfaces at both horizontal ends, and a pair of support frames are installed on the bottom surface of the tank.

[0020] This utility model has the following beneficial effects during use:

[0021] The entire equipment tank is mounted on the excavator. The inlet section of the refrigerant pipeline is connected to the outlet section of the air conditioning refrigerant system, and the outlet section of the refrigerant pipeline is connected to the inlet section of the air conditioning refrigerant system, thereby reducing the load on the air conditioning compressor. The oil inlet pipe is then connected to the outlet section of the hydraulic oil system, and the oil outlet pipe is connected to the inlet section of the hydraulic oil system. Simultaneously, the water inlet pipe is connected to the cooling water supply equipment. Thus, during the operation of the excavator and the cooling water supply equipment, the refrigerant and hydraulic oil first exchange heat in the oil inlet chamber, utilizing the lower temperature of the refrigerant to cool the hydraulic oil. Then, the hydraulic oil and refrigerant enter the second chamber through the hydraulic oil cooling pipe and the refrigerant cooling section, respectively. Upon entering the second chamber, the hydraulic oil and refrigerant are rapidly cooled by the cooling water. The cooled hydraulic oil and refrigerant can then be discharged through the oil outlet pipe and the outlet section, respectively, and enter their respective systems for operation. Furthermore, when the refrigerant and hydraulic oil pass through the outlet chamber simultaneously, they can exchange heat briefly before being discharged, allowing the refrigerant to further reduce the temperature of the hydraulic oil. The small-volume outlet chamber also prevents the refrigerant from overheating. Thus, the device described in this application, through its integrated cooling system, reduces the size of the equipment used to simultaneously cool both the air conditioning refrigerant and hydraulic oil. Moreover, by utilizing the partial heat exchange between the refrigerant and hydraulic oil during the cooling process, it achieves more efficient cooling of the hydraulic oil within a smaller cooling device without affecting the normal operation of the refrigerant. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a cross-sectional front view of the present invention.

[0024] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure.

[0025] Figure 4 This is a schematic diagram of the pipeline structure of this utility model.

[0026] Figure 5 for Figure 4 A schematic diagram of the test structure.

[0027] Figure 6 for Figure 4 A formal structural diagram.

[0028] Figure 7 This is a schematic diagram of the refrigerant pipeline outlet side structure of this utility model.

[0029] Figure 8This is a schematic diagram of the refrigerant pipeline liquid inlet side structure of this utility model.

[0030] Figure 9 This is a schematic diagram of the tank assembly structure of this utility model.

[0031] Among them, 100-tank body, 200-partition plate, 300-first cavity, 301-oil inlet cavity, 302-oil outlet cavity, 400-second cavity, 500-horizontal plate, 600-liquid inlet section, 700-refrigerant cooling section, 701-first U-shaped pipe, 702-first bend pipe, 703-second U-shaped pipe, 704-second bend pipe, 705-third U-shaped pipe, 704-second bend pipe, 705-third U-shaped pipe, 800-liquid outlet section, 900-hydraulic oil cooling pipe, 1000-oil inlet pipe, 1100-oil outlet pipe, 1200-water inlet pipe, 1300-water outlet pipe, 1400-first stabilizing plate, 1500-second stabilizing plate, 1600-positioning rod, 1700-first channel, 1800-second channel, 1900-support frame. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 based on the specific circumstances.

[0038] Please refer to Figures 1 to 8 As shown, an integrated cooling device for excavator hydraulic oil and air conditioning refrigerant includes:

[0039] The tank body 100 has a partition plate 200 inside, which divides the tank body 100 into a first cavity 300 and a second cavity 400. The first cavity 300 is provided with a horizontal plate 500, which divides the first cavity 300 into an oil inlet cavity 301 and an oil outlet cavity 302.

[0040] The refrigerant pipeline includes an inlet section 600 extending into the oil inlet chamber 301, a refrigerant cooling section 700 located in the second chamber 400 and communicating with the inlet section 600, and an outlet section 800 communicating with the refrigerant cooling section 700, passing through the oil outlet chamber 302 and extending out of the tank body 100.

[0041] The hydraulic oil pipeline includes a hydraulic oil cooling pipe 900 disposed in the second cavity 400, and the two ends of the hydraulic oil cooling pipe 900 are respectively connected to the oil inlet cavity 301 and the oil outlet cavity 302;

[0042] The tank body 100 is provided with an oil inlet pipe 1000 communicating with the oil inlet chamber 301, an oil outlet pipe 1100 communicating with the oil outlet chamber 302, and a water inlet pipe 1200 and a water outlet pipe 1300 communicating with the second chamber 400.

[0043] In this way, the entire equipment tank 100 is installed on the excavator, and the inlet section 600 of the refrigerant pipeline is connected to the outlet end of the air conditioning refrigerant system, and the outlet section 800 of the refrigerant pipeline is connected to the inlet end of the air conditioning refrigerant system, thereby reducing the load on the air conditioning compressor; then the oil inlet pipe 1000 is connected to the outlet end of the hydraulic oil system, and the oil outlet pipe 1100 is connected to the inlet end of the hydraulic oil system; at the same time, the water inlet pipe 1200 is connected to the cooling water supply equipment. Thus, during the operation of the excavator and the simultaneous operation of the cooling water supply equipment, the refrigerant and hydraulic oil first exchange heat in the oil inlet chamber 301, utilizing the lower temperature of the refrigerant to cool the hydraulic oil; then the hydraulic oil and refrigerant enter the second chamber 400 through the hydraulic oil cooling pipe 900 and the refrigerant cooling section 700 respectively. When the hydraulic oil and refrigerant flow into the second chamber 400, they undergo rapid cooling under the action of the cooling water. The cooled hydraulic oil and refrigerant can be discharged through the oil outlet pipe 1100 and the liquid outlet section 800, respectively, and enter the corresponding system for operation. Furthermore, when the refrigerant and hydraulic oil pass through the oil outlet chamber 302 simultaneously, they can exchange heat briefly before discharge, allowing the refrigerant to further reduce the temperature of the hydraulic oil. The small volume of the oil outlet chamber 302 also prevents the refrigerant from overheating. Thus, the device described in this application, through its integrated cooling system, reduces the size of the equipment for simultaneously cooling both air conditioning refrigerant and hydraulic oil. Moreover, by utilizing the heat exchange between the air conditioning refrigerant and hydraulic oil during a portion of the cooling process, it achieves more efficient cooling of the hydraulic oil within a small cooling device without affecting the normal operation of the refrigerant.

[0044] Please combine Figure 9 As shown, a first stabilizing plate 1400 and a second stabilizing plate 1500 are installed in the second cavity 400, and the refrigerant cooling section 700 and the hydraulic oil cooling pipe 900 pass through the first stabilizing plate 1400 and the second stabilizing plate 1500, respectively.

[0045] In this way, by using the first stabilizing plate 1400 and the second stabilizing plate 1500 set in the second cavity 400, the installation stability of the refrigerant cooling section 700 and the hydraulic oil cooling pipe 900 in the second cavity 400 can be ensured, and the refrigerant cooling section 700 and the hydraulic oil cooling pipe 900 can be prevented from shaking and colliding with each other.

[0046] Specifically, regarding the installation of the first stabilizing plate 1400 and the second stabilizing plate 1500, a positioning rod 1600 is installed in the second cavity 400. The positioning rod 1600 passes through the first stabilizing plate 1400 and the second stabilizing plate 1500 in sequence, and the positioning rod 1600 is fixedly connected to the first stabilizing plate 1400 and the second stabilizing plate 1500.

[0047] Furthermore, the first stabilizing plate 1400 and the second stabilizing plate 1500 are arranged parallel to each other and alternately in sequence. The first stabilizing plate 1400 is closest to the partition plate 200, and the second stabilizing plate 1500 is furthest away from the partition plate 200. A first channel 1700 is formed between the top end of the first stabilizing plate 1400 and the inner wall of the second cavity 400, and a second channel 1800 is formed between the bottom end of the second stabilizing plate 1500 and the inner wall of the second cavity 400.

[0048] The inlet pipe 1200 is connected to the bottom surface of the tank 100 near the partition plate 200 and is located between the partition plate 200 and the first stabilizing plate 1400. The outlet pipe 1300 is connected to the top surface of the tank 100 away from the partition plate 200 and is located between the second stabilizing plate 1500 and the end of the second cavity 400.

[0049] In this way, by utilizing the first channel 1700 and the second channel 1800 respectively provided on the first stabilizing plate 1400 and the second stabilizing plate 1500, the situation where cooling water cannot flow within the second cavity 400 due to the installation of the first stabilizing plate 1400 and the second stabilizing plate 1500 can be avoided. The first channel 1700 and the second channel 1800 can also prevent the formation of a closed space between the first stabilizing plate 1400 and the second stabilizing plate 1500. Furthermore, after the first channel 1700 and the second channel 1800 are provided, combined with the parallel first stabilizing plate 1400 and the second stabilizing plate 1500, an S-shaped flow channel can be formed in the second cavity 400. Thus, the cooling water entering the second cavity 400 from the inlet pipe 1200 can flow in a serpentine manner within the S-shaped flow channel, thereby providing staged cooling of the fluid flowing through the refrigerant cooling section 700 and the hydraulic oil cooling pipe 900, i.e., the most efficient cooling occurs during the fluid inflow and outflow stages. Meanwhile, the S-shaped flow channel design prevents excessive turbulence of cooling water within the second chamber 400 and increases the flow path of the cooling water within the second chamber 400. This significantly improves the cooling effect on both the coolant and hydraulic oil.

[0050] Furthermore, please combine Figure 7 and Figure 8As shown, the refrigerant cooling section 700 includes a first U-shaped tube 701 communicating with the liquid inlet section 600. The liquid outlet end of the first U-shaped tube 701 extends into the oil outlet chamber 302. The first U-shaped tube 701 is connected to a second U-shaped tube 703 extending into the second chamber 400 via a first bend 702 provided in the oil outlet chamber 302. The liquid outlet end of the second U-shaped tube 703 extends into the oil inlet chamber 301. The liquid outlet end of the second U-shaped tube 703 is connected to a third U-shaped tube 705 extending into the second chamber 400 via a second bend 704 provided in the oil inlet chamber 301. The liquid outlet end of the third U-shaped tube 705 extends into the oil outlet chamber 302 and communicates with the liquid outlet section 800.

[0051] In this way, due to the improved heat exchange efficiency of the refrigerant, the refrigerant sequentially passes through the inlet section 600, the first U-shaped pipe 701, the first bend 702, the second U-shaped pipe 703, the second bend 704, the third U-shaped pipe 705, and the outlet section 800. That is, the coolant sequentially passes through the oil inlet chamber 301, the second chamber 400, the oil outlet chamber 302, the second chamber 400, the oil inlet chamber 301, the second chamber 400, and the oil outlet chamber 302. This utilizes the improved heat exchange efficiency of the refrigerant to continuously heat up and cool down the coolant throughout the system. By controlling the lengths of the first bend 702 and the second bend 704, excessive heat exchange between the coolant and the hydraulic oil is avoided. This prevents the final output coolant temperature from being too high and ensures that the coolant can also cool the hydraulic oil multiple times within the system, improving the cooling effect on the hydraulic oil.

[0052] Furthermore, the axes of the first bend 702 and the second bend 704 are both arranged parallel to the partition plate 200.

[0053] To ensure that the tank 100 can withstand greater pressure, the tank 100 is a horizontal tank, and its horizontal ends are constructed as spherical surfaces. To facilitate the installation of the tank 100, a pair of support frames 1900 are installed on the bottom surface of the tank 100.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated cooling device for excavator hydraulic oil and air conditioning refrigerant, characterized in that, include: The tank (100) has a partition plate (200) inside, which divides the tank (100) into a first chamber (300) and a second chamber (400). The first chamber (300) is provided with a horizontal plate (500), which divides the first chamber (300) into an oil inlet chamber (301) and an oil outlet chamber (302). The refrigerant pipeline includes an inlet section (600) extending into the oil inlet chamber (301), a refrigerant cooling section (700) located in the second chamber (400) and communicating with the inlet section (600), and an outlet section (800) communicating with the refrigerant cooling section (700), passing through the oil outlet chamber (302), and extending out of the tank body (100). The hydraulic oil pipeline includes a hydraulic oil cooling pipe (900) disposed in the second cavity (400), and the two ends of the hydraulic oil cooling pipe (900) are respectively connected to the oil inlet cavity (301) and the oil outlet cavity (302); The tank body (100) is provided with an oil inlet pipe (1000) communicating with the oil inlet chamber (301), an oil outlet pipe (1100) communicating with the oil outlet chamber (302), and a water inlet pipe (1200) and a water outlet pipe (1300) communicating with the second chamber (400).

2. The integrated cooling device for excavator hydraulic oil and air conditioning refrigerant according to claim 1, characterized in that, The second cavity (400) is equipped with a first stabilizing plate (1400) and a second stabilizing plate (1500). The refrigerant cooling section (700) and the hydraulic oil cooling pipe (900) pass through the first stabilizing plate (1400) and the second stabilizing plate (1500) respectively.

3. The integrated cooling device for excavator hydraulic oil and air conditioning refrigerant according to claim 2, characterized in that, A positioning rod (1600) is installed in the second cavity (400). The positioning rod (1600) passes through the first stabilizing plate (1400) and the second stabilizing plate (1500) in sequence, and the positioning rod (1600) is fixedly connected to the first stabilizing plate (1400) and the second stabilizing plate (1500).

4. The integrated cooling device for excavator hydraulic oil and air conditioning refrigerant according to claim 2 or 3, characterized in that, The first stabilizing plate (1400) and the second stabilizing plate (1500) are arranged parallel to each other and alternately in sequence. The first stabilizing plate (1400) is closest to the partition plate (200), and the second stabilizing plate (1500) is furthest away from the partition plate (200). A first channel (1700) is formed between the top end of the first stabilizing plate (1400) and the inner wall of the second cavity (400), and a second channel (1800) is formed between the bottom end of the second stabilizing plate (1500) and the inner wall of the second cavity (400). The inlet pipe (1200) is connected to the bottom surface of the tank (100) near the partition plate (200) and located between the partition plate (200) and the first stabilizing plate (1400). The outlet pipe (1300) is connected to the top surface of the tank (100) away from the partition plate (200) and located between the second stabilizing plate (1500) and the end of the second cavity (400).

5. The integrated cooling device for excavator hydraulic oil and air conditioning refrigerant according to claim 1, characterized in that, The refrigerant cooling section (700) includes a first U-shaped tube (701) communicating with the liquid inlet section (600). The liquid outlet end of the first U-shaped tube (701) extends into the oil outlet chamber (302). The first U-shaped tube (701) is connected to a second U-shaped tube (703) extending into the second chamber (400) through a first bend (702) provided in the oil outlet chamber (302). The liquid outlet end of the second U-shaped tube (703) extends into the oil inlet chamber (301). The liquid outlet end of the second U-shaped tube (703) is connected to a third U-shaped tube (705) extending into the second chamber (400) through a second bend (704) provided in the oil inlet chamber (301). The liquid outlet end of the third U-shaped tube (705) extends into the oil outlet chamber (302) and communicates with the liquid outlet section (800).

6. The integrated cooling device for excavator hydraulic oil and air conditioning refrigerant according to claim 5, characterized in that, The axes of the first bend (702) and the second bend (704) are both arranged parallel to the partition plate (200).

7. The integrated cooling device for excavator hydraulic oil and air conditioning refrigerant according to claim 1, characterized in that, The tank (100) is a horizontal tank, and the horizontal ends of the tank (100) are constructed as spherical surfaces. A pair of support frames (1900) are installed on the bottom surface of the tank (100).

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