Cooling system using pressure control and fluid phase change

Abstract

A cooling system using pressure control and fluid phase change for cooling heat source devices, comprising a chamber, a fluid injection device and a vacuum device. The chamber has an inlet and an outlet, the fluid injection device is capable of delivering working fluid into the chamber through the inlet, and the vacuum device is connected to the outlet of the chamber. When the vacuum device is activated, it is capable of drawing a vacuum in the chamber through the outlet, so that a negative pressure is formed in the chamber, and the boiling point of the working fluid in the chamber is lowered, so that the working fluid is accelerated to boil and vaporize. The vacuum device includes two vacuum sources, which can use different pumps according to the needs to control the pressure, so as to improve the cooling effect. At least one first temperature sensor is arranged inside the chamber, and at least one second temperature sensor is arranged outside the chamber, which can be used to detect the temperature inside and outside the chamber, so as to calculate the required amount of fluid and pressure by using the temperature difference between the inside and outside of the chamber, so as to change and adjust the temperature, and provide better cooling effect.

Description

Technical Field

[0001] This utility model relates to a cooling system that uses pressure control and fluid phase change, and more particularly to a cooling system for heat source devices that can quickly absorb heat energy and assist in heat dissipation. Background Technology

[0002] Electronic devices and machinery generate high temperatures during operation, so manufacturers typically install cooling systems to assist in heat dissipation. For example, heat pipes are widely used for heat dissipation, utilizing the evaporation and condensation of internal coolant to achieve rapid temperature uniformity. However, existing cooling systems cannot precisely control the cooling temperature to quickly remove high-temperature energy, thus limiting their cooling effectiveness. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cooling system that uses pressure control and fluid phase change to address the shortcomings of the prior art, thereby providing better cooling and heat dissipation effects.

[0004] To address the aforementioned technical problems, this utility model provides a cooling system utilizing pressure control and fluid phase change, comprising: a cavity containing a chamber, the cavity having an inlet and an outlet, the inlet and outlet respectively communicating with the chamber; a fluid injection system connected to the inlet of the cavity, the fluid injection system capable of delivering working fluid from the inlet to the chamber; and a vacuum device connected to the outlet of the cavity, the vacuum device being electrically connected to a control unit, the control unit being able to control the operation of the vacuum device, and the vacuum device being able to activate upon startup. The outlet of the cavity evacuates the cavity, thereby reducing the pressure inside the cavity and lowering the boiling point of the working fluid inside the cavity. The cavity is equipped with at least one first temperature sensor inside and at least one second temperature sensor outside the cavity. The at least one first temperature sensor and the at least one second temperature sensor are electrically connected to the control unit. The at least one first temperature sensor and the at least one second temperature sensor can respectively detect the internal and external temperatures of the cavity, and calculate at least one of the required working fluid volume and pressure using the temperature difference between the internal and external temperatures, thereby adjusting the temperature.

[0005] Optionally, the cavity has a detachable wall fixed to an opening of the cavity, and the detachable wall can be removed from the cavity to open the opening.

[0006] Optionally, at least one of the interior and exterior of the cavity is provided with a plurality of heat dissipation fins.

[0007] Optionally, the cavity is provided with a level gauge, which can be used to detect the level of the working fluid in the cavity.

[0008] Optionally, the vacuum device includes two vacuum sources that can provide different vacuum levels for pressure control.

[0009] Optionally, the inlet of the cavity is connected to a control valve, which is electrically connected to the control unit. The control unit can control the control valve to control the working fluid delivered to the inlet of the cavity.

[0010] Optionally, the cavity is in contact with or near a heat source device, and at least one third temperature sensor is provided on the heat source device. The at least one third temperature sensor is electrically connected to the control unit. The at least one third temperature sensor can be used to detect the temperature of the heat source device and calculate at least one of the required working fluid volume and pressure, thereby adjusting the temperature.

[0011] Optionally, the cavity is disposed within a container, such that the cavity is immersed in a fluid within the container, or heat exchange occurs through contact.

[0012] Optionally, the cavity has a main body and multiple branch sections, the multiple branch sections are connected to the main body, the inlet is connected to the multiple branch sections, and the outlet is connected to the main body.

[0013] Optionally, the cavity is provided with an internal interlayer space, which is located on one side wall or one bottom wall of the cavity, and the internal interlayer space is evacuated.

[0014] To address the aforementioned technical problems, this utility model also provides a cooling system using pressure control and fluid phase change, comprising: a cavity containing a chamber, the cavity having an inlet and an outlet, the inlet and the outlet respectively communicating with the chamber; a fluid injection system connected to the inlet of the cavity, the fluid injection system being able to deliver working fluid to the chamber through the inlet; a vacuum device connected to the outlet of the cavity, the vacuum device being electrically connected to a control unit, and the control unit being able to control the operation of the vacuum device, the vacuum device being able to evacuate the chamber through the outlet of the cavity when activated, thereby reducing the pressure in the chamber and lowering the boiling point of the working fluid in the chamber; wherein at least one temperature sensor is provided inside or outside the cavity, the at least one temperature sensor being electrically connected to the control unit, the at least one temperature sensor being able to detect the temperature inside or outside the cavity, and using the temperature inside or outside the cavity to calculate at least one of the required working fluid volume and pressure, thereby adjusting the temperature.

[0015] Optionally, the vacuum device includes two vacuum sources that can provide different vacuum levels for pressure control.

[0016] Optionally, the cavity is in contact with or near a heat source device, and at least one other temperature sensor is provided on the heat source device. The at least one other temperature sensor is electrically connected to the control unit. The at least one other temperature sensor can be used to detect the temperature of the heat source device and calculate at least one of the required working fluid volume and pressure, thereby adjusting the temperature.

[0017] The beneficial effects of this utility model are as follows: The cooling system using pressure control and fluid phase change provided by this utility model includes a cavity, a fluid injection system, and a vacuum device. The cavity contains a chamber with an inlet and an outlet, both of which are connected to the chamber. The fluid injection system is connected to the inlet of the cavity and can deliver working fluid into the cavity through the inlet. The vacuum device is connected to the outlet of the cavity and is electrically connected to a control unit, allowing the control unit to control the operation of the vacuum device. When the vacuum device is activated, it evacuates the cavity through the outlet, causing a pressure drop within the cavity. This lowers the boiling point of the working fluid, accelerating its boiling and vaporization. The working fluid undergoes a phase change, transforming from a liquid phase to a gaseous phase, absorbing a large amount of heat to provide cooling for the heat source device. Furthermore, the boiling point of the working fluid is controllable and adjustable, allowing for temperature adjustment. The cavity is equipped with at least one first temperature sensor inside and at least one second temperature sensor outside. The first and second temperature sensors can be used to detect the temperature inside and outside the cavity, respectively, so as to calculate at least one of the required working fluid volume and pressure by using the temperature difference between the inside and outside of the cavity, and thus adjust the temperature to provide better cooling and heat dissipation.

[0018] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings are provided for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a cooling system using pressure control and fluid phase change in the first embodiment of this utility model.

[0020] Figure 2 This is a schematic diagram of a cooling system using pressure control and fluid phase change, as shown in the second embodiment of this utility model.

[0021] Figure 3 This is a schematic diagram of a cooling system using pressure control and fluid phase change according to the third embodiment of this utility model.

[0022] Figure 4 This is a schematic diagram of a cooling system using pressure control and fluid phase change according to the fourth embodiment of this utility model.

[0023] Figure 5 This is a schematic diagram of a cooling system using pressure control and fluid phase change according to the fifth embodiment of this utility model.

[0024] Figure 6 This is the three-phase diagram used in the cooling system of this utility model. Detailed Implementation

[0025] [Example]

[0026] Please see Figure 1 and Figure 2 This invention provides a cooling system using pressure control and fluid phase change for cooling heat source devices, such as injection molding equipment, cooling equipment, chilled water systems, electronic equipment, and heating furnaces. The cooling system in this embodiment is a fully enclosed refrigerant system, but this is not limited; for example, it can also be a semi-open system. The refrigerant is water, used as an example, but this is not limited. The cooling system using pressure control and fluid phase change includes a cavity 1, a fluid injection system 2, and a vacuum device 3.

[0027] The material of the cavity 1 is not limited; for example, it can be a metal, or a metal with good thermal conductivity (such as copper or aluminum). The cavity 1 is a hollow body, and a chamber 11 is provided inside the cavity 1. The cavity 1 has an inlet 12 and an outlet 13, which are respectively connected to the chamber 11. Working fluid can be input into the chamber 11 through the inlet 12 and output through the outlet 13. The working fluid can also be regarded as a coolant. The cavity 1 is an evaporator. The cavity 1 can contact or be close to a heat source device, so that the high temperature energy of the heat source device can be transferred to the cavity 1. The heat source device can be set inside or outside the cavity 1, and the heat source device is not limited. The number of inlets 12 and outlets 13 is not limited; for example, two or three or more inlets 12 and outlets 13 can be provided. The inlet 12 can be set at the top of the cavity 1 or at the side of the cavity 1 (e.g., Figure 4 (as shown) or below, etc. (such as) Figure 5 (As shown).

[0028] The chamber 11 may also be provided with a porous material 103 to maximize the surface area and thereby increase the heat exchange effect. The liquid level of the working fluid is not limited; for example, when the working fluid evaporates instantaneously, the liquid level of the working fluid may be zero or close to zero.

[0029] In this embodiment, the cavity 1 has a detachable wall 14, which can be a side wall 101 or a bottom wall 102 of the cavity 1. The detachable wall 14 can be fixed to an opening 15 of the cavity 1 by means of screws or other methods. The detachable wall 14 can be removed from the cavity 1 to open the opening 15 for easy maintenance and repair. The cavity 1 may be provided with multiple heat dissipation fins 16, which can be located inside or outside the cavity 1. This embodiment discloses that the multiple heat dissipation fins 16 are located outside the cavity 1. The multiple heat dissipation fins 16 can be used to increase the heat exchange area and improve the cooling effect. The cavity 1 may also be provided with a level gauge 6, which is electrically connected to a control unit 4. The level gauge 6 can be used to detect the level of the working fluid in the cavity 11 to control the flow rate of the working fluid to achieve the best cooling effect.

[0030] The fluid injection system 2 is connected to the inlet 12 of the cavity 1. The fluid injection system 2 can deliver working fluid to the cavity 11 through the inlet 12. The fluid injection system 2 can deliver water mist or liquid working fluid to the cavity 11. The state of the working fluid is not limited.

[0031] The vacuum device 3 includes a vacuum source, etc. The vacuum device 3 is connected to the outlet 13 of the cavity 1 and electrically connected to the control unit 4, which can control the operation of the vacuum device 3, such as controlling its on / off state and rotation speed. When the vacuum device 3 is activated, it evacuates the cavity 11 through the outlet 13, causing a pressure drop within the cavity 11. This lowers the boiling point of the working fluid within the cavity 11, accelerating its boiling and vaporization. The working fluid within the cavity 11 undergoes a phase change, transforming from a liquid phase to a gaseous phase. This process absorbs a large amount of heat, providing cooling for the heat source device. Furthermore, the boiling point of the working fluid is controllable.

[0032] It is adjustable and can change and adjust the temperature.

[0033] In this embodiment, the vacuum device 3 may include two vacuum sources 31 and 32. The two vacuum sources 31 and 32 have different specifications and can provide different vacuum levels. They can be used for low vacuum and high vacuum respectively, and different pumps can be used according to the needs to control the pressure. The vacuum level of the two vacuum sources 31 and 32 can be adjusted at any time according to the required pressure to improve the cooling and heat dissipation effect.

[0034] The working fluid (gas or liquid) extracted through outlet 13 of cavity 1 can be returned to cavity 1 via vacuum device 3 and fluid injection system 2. The structure of fluid injection system 2 is not limited and can be various fluid injection devices. In this embodiment, fluid injection system 2 may include a heat exchanger 21, a water tank 22, and a delivery pump 23. Heat exchanger 21 is connected to vacuum device 3, water tank 22 is connected to heat exchanger 21, and delivery pump 23 is connected between water tank 22 and inlet 12 of cavity 1. The working fluid extracted through outlet 13 of cavity 1 can be delivered to heat exchanger 21 via vacuum device 3. Heat exchanger 21 can condense the vapor discharged from vacuum device 3 into liquid working fluid, and then deliver the liquid working fluid to water tank 22 for storage. Then, the liquid working fluid can be delivered to inlet 12 of cavity 1 via delivery pump 23. Inlet 12 may be equipped with an atomizing head 24, which can deliver the working fluid into cavity 11 in the form of water mist.

[0035] A control valve 5 can be connected to the inlet 12 of the cavity 1. The control valve 5 can be located between the delivery pump 23 and the inlet 12 of the cavity 1. The control valve 5 is electrically connected to the control unit 4. The control unit 4 can send a control signal to control the control valve 5, so that the working fluid delivered to the inlet 12 of the cavity 1 can be controlled. The control valve 5 can be an on / off valve or a proportional valve, which can control the injection amount of the working fluid. The control unit 4 can control the opening or closing degree of the control valve 5. The control unit 4 can also control the operation of the vacuum device 3 to control the vacuum degree, temperature, etc. in the cavity 1.

[0036] At least one first temperature sensor 7 is provided inside the cavity 1, and at least one second temperature sensor 8 is provided outside the cavity 1. The first temperature sensor 7 and the second temperature sensor 8 are electrically connected to the control unit 4. The first temperature sensor 7 and the second temperature sensor 8 can be used to detect the internal and external temperatures of the cavity 1, respectively, for temperature control. The control unit 4 is a main control system that can work with the first temperature sensor 7 and the second temperature sensor 8 to detect the internal and external temperatures of the cavity 1, so as to calculate at least one of the required fluid volume and pressure using the temperature difference between the internal and external temperatures of the cavity 1. Through the control of the vacuum device 3 and the control valve 5, the cavity 1 is kept at the target temperature or pressure, providing better cooling and heat dissipation. In another embodiment, at least one first temperature sensor 7 can be provided only inside the cavity 1, or at least one second temperature sensor 8 can be provided only outside the cavity 1. That is, the cavity 1 can have at least one temperature sensor inside or outside the cavity 1 to detect the internal or external temperature of the cavity 1, and calculate at least one of the required working fluid volume and pressure using the internal or external temperature of the cavity 1, thereby adjusting the temperature.

[0037] Heat source device 100 (e.g.) Figure 3 As shown, the heat source device 100 may or may not be in contact with the cavity 1. At least one third temperature sensor 9 may also be further provided on the heat source device 100. The third temperature sensor 9 is electrically connected to the control unit 4. The third temperature sensor 9 can be used to detect the temperature of the heat source device in order to perform more precise fluid volume and pressure control.

[0038] The cavity 1 can also be disposed within a container 20, which may contain liquid or gas (fluid) for immersion in the liquid or gas, utilizing convection for heat exchange. Alternatively, heat exchange can be performed through contact, directly contacting the heat source device 100 to provide better cooling and heat dissipation. The fluid in the container 20 may or may not enter or exit; this embodiment discloses that the fluid in the container 20 may enter or exit. The container 20 may have an inlet 201 and an outlet 202, which can be used for inputting and outputting fluid, respectively. The container 20 may or may not contain fluid. The fluid in the container 20 may be the same as or different from the working fluid. Ideally, the fluid in the container 20 should be able to boil at low temperatures, have good heat conduction, and be non-toxic and environmentally friendly.

[0039] Alternatively, the formula q = m * Hv can be used to represent the heat absorbed by a substance during a state change (e.g., from liquid to gas), where: q: represents the absorbed heat, usually expressed in joules (J) or calories (cal); m: represents the mass of the substance, usually expressed in grams (g) or kilograms (kg); and Hv: represents the heat of vaporization required for the phase change, usually expressed in joules per gram (J / g) or calories per gram (cal / g). Using this formula, the heat required for the present invention to change from a liquid to a gaseous state can be calculated, allowing heat to be removed from the system and the system temperature to decrease. A target temperature (Ts) for the cooling system can be set, and a three-phase diagram (such as...) can be used... Figure 6 As shown), based on the location of the target temperature, the pressure value required to control the target temperature is obtained. The relative relationship between the target temperature and the temperature measured by the first temperature sensor 7, the second temperature sensor 8, the third temperature sensor 9, etc., or the power (WA) of the heat source device can determine the amount of water entering the system.

[0040] Alternatively, the cavity 1 may also be provided with an internal interlayer space 17 (such as...). Figure 4 As shown), the internal interlayer space 17 can be set on the side wall 101 or bottom wall 102 of the cavity 1. The internal interlayer space 17 is evacuated, and the vacuum can be used to form an insulation body. The internal interlayer space 17 may not have a heat transfer effect.

[0041] Additionally, such as Figure 5As shown, the shape of the cavity 1 can also be varied. The cavity 1 may have a main body 18 and multiple branch sections 19. The multiple branch sections 19 are connected to the main body 18, the inlet 12 is connected to the multiple branch sections 19, and the outlet 13 is connected to the main body 18. The fluid injection device can deliver working fluid to the chamber 11 of the cavity 1 through the inlet 12. When the vacuum device is activated, it can evacuate the chamber through the outlet 13, creating a negative pressure in the chamber 11, which lowers the boiling point of the working fluid in the chamber 11, accelerating the boiling and vaporization of the working fluid. The cavity 1 may also be provided with multiple heat dissipation fins 16, which can be used to increase the heat exchange area and improve the cooling effect. The cavity 1 may also be placed inside a container 20, which contains a fluid (liquid or gas) so that the fluid can be immersed in the fluid and heat exchanged by convection. The container 20 is provided with an inlet 201 and an outlet 202, which can be used for inputting and outputting fluid, respectively.

[0042] [Beneficial Effects of the Examples]

[0043] The beneficial effects of this utility model are as follows: The cooling system using pressure control and fluid phase change provided by this utility model includes a cavity, a fluid injection system, and a vacuum device. The cavity contains a chamber with an inlet and an outlet, both of which are connected to the chamber. The fluid injection system is connected to the inlet of the cavity and can deliver working fluid into the cavity through the inlet. The vacuum device is connected to the outlet of the cavity and is electrically connected to a control unit, allowing the control unit to control the operation of the vacuum device. When the vacuum device is activated, it evacuates the cavity through the outlet, causing a pressure drop within the cavity. This lowers the boiling point of the working fluid, accelerating its boiling and vaporization. The working fluid undergoes a phase change, transforming from a liquid phase to a gaseous phase, absorbing a large amount of heat to provide cooling for the heat source device. Furthermore, the boiling point of the working fluid is controllable and adjustable, allowing for temperature adjustment. The cavity is equipped with at least one first temperature sensor inside and at least one second temperature sensor outside. The first and second temperature sensors can be used to detect the temperature inside and outside the cavity, respectively, and calculate the required fluid volume and pressure of the working fluid by using the temperature difference between the inside and outside of the cavity. The temperature can be adjusted to provide better cooling and heat dissipation.

[0044] However, the above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of patent protection of the present utility model. Therefore, all equivalent changes made based on the content of the present utility model specification and drawings are similarly included within the scope of protection of the present utility model and are hereby stated.

Claims

1. A cooling system using pressure control and fluid phase change, characterized by, include: A cavity, wherein a chamber is provided within the cavity, the cavity has an inlet and an outlet, and the inlet and the outlet are respectively connected to the chamber; A fluid injection system is connected to the inlet of the cavity, and the fluid injection system can deliver working fluid into the cavity through the inlet; A vacuum device is connected to the outlet of the cavity and electrically connected to a control unit, which can control the operation of the vacuum device. When the vacuum device is started, it can evacuate the cavity through the outlet of the cavity, thereby reducing the pressure in the cavity and lowering the boiling point of the working fluid in the cavity. The cavity is provided with at least one first temperature sensor inside and at least one second temperature sensor outside. The at least one first temperature sensor and the at least one second temperature sensor are electrically connected to the control unit. The at least one first temperature sensor and the at least one second temperature sensor can be used to detect the temperature inside and outside the cavity, respectively, and calculate at least one of the required working fluid volume and pressure using the temperature difference between the inside and outside of the cavity, thereby adjusting the temperature.

2. The cooling system using pressure control and fluid phase change of claim 1, wherein, The cavity has a detachable wall fixed to an opening of the cavity, and the detachable wall can be removed from the cavity to open the opening.

3. The cooling system using pressure control and fluid phase change as described in claim 1, characterized in that, The cavity has at least one of its interior and exterior surfaces equipped with multiple heat dissipation fins.

4. The cooling system using pressure control and fluid phase change as described in claim 1, characterized in that, The cavity is equipped with a level gauge, which can be used to detect the level of the working fluid inside the cavity.

5. The cooling system using pressure control and fluid phase change as described in claim 1, characterized in that, The vacuum device includes two vacuum sources that can provide different vacuum levels for pressure control.

6. The cooling system using pressure control and fluid phase change as described in claim 1, characterized in that, The inlet of the cavity is connected to a control valve, which is electrically connected to the control unit. The control unit can control the control valve to control the working fluid delivered to the inlet of the cavity.

7. The cooling system using pressure control and fluid phase change as described in claim 1, characterized in that, The cavity is in contact with or near the heat source device, and the heat source device is provided with at least one third temperature sensor. The at least one third temperature sensor is electrically connected to the control unit. The at least one third temperature sensor can be used to detect the temperature of the heat source device and calculate at least one of the required working fluid volume and pressure, thereby adjusting the temperature.

8. The cooling system using pressure control and fluid phase change as described in claim 1, characterized in that, The cavity is disposed within a container, such that the cavity is immersed in a fluid within the container, or heat exchange occurs through contact.

9. The cooling system using pressure control and fluid phase change as described in claim 8, characterized in that, The cavity has a main body and multiple branch sections, the multiple branch sections are connected to the main body, the inlet is connected to the multiple branch sections, and the outlet is connected to the main body.

10. The cooling system using pressure control and fluid phase change as described in claim 1, characterized in that, The cavity is provided with an internal interlayer space, which is located on one side wall or one bottom wall of the cavity, and the internal interlayer space is evacuated.

11. A cooling system using pressure control and fluid phase change, characterized in that, include: A cavity, wherein a chamber is provided within the cavity, the cavity has an inlet and an outlet, and the inlet and the outlet are respectively connected to the chamber; A fluid injection system is connected to the inlet of the cavity, and the fluid injection system can deliver working fluid into the cavity through the inlet; A vacuum device is connected to the outlet of the cavity and electrically connected to a control unit, which can control the operation of the vacuum device. When the vacuum device is started, it can evacuate the cavity through the outlet of the cavity, thereby reducing the pressure in the cavity and lowering the boiling point of the working fluid in the cavity. The cavity is provided with at least one temperature sensor inside or outside, the at least one temperature sensor is electrically connected to the control unit, the at least one temperature sensor can be used to detect the temperature inside or outside the cavity, and use the temperature inside or outside the cavity to calculate at least one of the required working fluid volume and pressure, and can adjust the temperature.

12. The cooling system using pressure control and fluid phase change as described in claim 11, characterized in that, The vacuum device includes two vacuum sources that can provide different vacuum levels for pressure control.

13. The cooling system using pressure control and fluid phase change as described in claim 11, characterized in that, The cavity is in contact with or near a heat source device, and at least one other temperature sensor is provided on the heat source device. The at least one other temperature sensor is electrically connected to the control unit. The at least one other temperature sensor can be used to detect the temperature of the heat source device and calculate at least one of the required working fluid volume and pressure, thereby adjusting the temperature.

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