A heat exchange device with auxiliary output

Abstract

The present invention discloses a heat exchange device with auxiliary output, belonging to the field of engineering thermophysics. It includes a housing, and the housing includes an accommodation cavity capable of accommodating a first medium. A piston assembly, a gas-liquid injection assembly, a liquid injection assembly, and a gas-liquid extraction and discharge assembly are also provided corresponding to the housing. The piston assembly includes a piston and a cylinder. The gas-liquid injection assembly includes a gas-liquid input pipeline and a gas-liquid pump. The liquid injection assembly includes a high-pressure pump, a third medium storage tank, and a third medium pipeline. The temperature of the second medium is greater than the vaporization temperature of the third medium. The third medium exchanges heat with the second medium in the cylinder and vaporizes into a gas, and the vaporization expansion of the third medium pushes the piston to do external work. The gas-liquid extraction and discharge assembly includes a vacuum pump. The heat exchange device with auxiliary output of the present invention has the advantages of high heat exchange efficiency, good economic benefits, simple system structure, fast refrigeration, etc., and can output mechanical energy to provide power for generators, pumps, etc.

Description

Technical Field

[0001] The present invention belongs to the field of engineering thermophysics, and particularly relates to a heat exchange device with auxiliary output. Background Art

[0002] A third medium can absorb heat and vaporize in a first medium, and cool the first medium with its huge phase change latent heat, so as to achieve the purpose of refrigeration. This refrigeration method does not require active refrigeration equipment such as compressors and condensers, has great heat absorption potential, and is convenient to operate. Due to many advantages, it is widely used in fields such as medical treatment, electronic processing, and new thermal control systems for lasers.

[0003] Traditional third-medium refrigeration uses air baths, water baths, and spray heat exchangers, that is, a metal pipe with the third medium flowing inside is immersed in the first medium, and heat transfer is carried out by relying on the convective heat transfer between the first medium and the pipe and between the pipe and the third medium, and the cold quantity is transferred to the first medium, thereby reducing the temperature of the first medium.

[0004] The heat transfer capacity of this heat exchange method is affected by many factors such as the convective heat transfer resistance between the first medium and the pipe, the heat conduction resistance of the pipe wall itself, and the convective heat transfer resistance between the pipe and the third medium. And during long-term use, local cold quantity concentration near the pipe wall leads to icing, which further deteriorates the convective heat transfer. At the same time, a large amount of mechanical energy generated during the gasification and expansion of the third medium is not utilized. The above-mentioned factors result in the effective utilization rate of the cold quantity of the third medium in the traditional heat exchanger being about half, causing relatively large energy waste. Summary of the Invention

[0005] In view of one or more of the above-mentioned defects or improvement requirements in the prior art, the present invention provides a heat exchange device with auxiliary output, which adopts direct contact and mixing heat exchange between the first medium and the third medium, reduces the above-mentioned heat transfer resistance, greatly improves the heat exchange efficiency, and at the same time makes full use of the mechanical energy during the gasification and expansion of the third medium, greatly improving the utilization rate of the cold quantity of the third medium.

[0006] To achieve the above object, the present invention provides a heat exchange device with auxiliary output, including a housing, the housing includes a containing cavity capable of containing a first medium, and the first medium does not fill the containing cavity; a piston assembly, a gas-liquid injection assembly, a liquid injection assembly, and a gas-liquid pumping and discharging assembly are further provided corresponding to the housing;

[0007] The piston assembly includes a piston and a cylinder, and the piston can reciprocate in the cylinder;

[0008] The gas-liquid injection assembly includes a gas-liquid input pipeline and a gas-liquid pump. One end of the gas-liquid input pipeline communicates with the cylinder, and the other end is connected to the gas-liquid pump. The gas-liquid pump floats on the surface of the first medium and can simultaneously absorb the first medium and the air in the housing. The first medium and the air in the housing are mixed to form a second medium that is a gas-liquid mixture. The gas-liquid pump extracts the second medium and injects it into the cylinder through the gas-liquid input pipeline;

[0009] The liquid injection assembly includes a high-pressure pump, a third medium storage tank, and a third medium pipeline. The third medium stored in the third medium storage tank is a liquid; one end of the third medium pipeline is connected to the third medium storage tank, and the other end communicates with the cylinder. The high-pressure pump extracts the third medium and injects it into the cylinder through the third medium pipeline;

[0010] The temperature of the second medium is greater than the vaporization temperature of the third medium; the third medium exchanges heat with the second medium in the cylinder and vaporizes into a gas, and the vaporization expansion of the third medium pushes the piston to do external work;

[0011] The gas-liquid extraction and discharge assembly includes a vacuum pump. One end of the vacuum pump communicates with the cylinder, and the other end communicates with the accommodation chamber; the vacuum pump can extract the gas formed after the vaporization of the first medium and the third medium in the cylinder and discharge it into the accommodation chamber.

[0012] As a further improvement of the present invention, the gas-liquid injection assembly further includes a gas-liquid nozzle. One end of the gas-liquid nozzle communicates with the cylinder, and the other end is connected to the gas-liquid input pipeline.

[0013] As a further improvement of the present invention, the liquid injection assembly further includes a third medium nozzle. One end of the third medium nozzle communicates with the cylinder, and the other end is connected to the third medium pipeline.

[0014] As a further improvement of the present invention, the third medium pipeline is made of heat-insulating material.

[0015] As a further improvement of the present invention, the gas-liquid extraction and discharge assembly further includes a gas-liquid output pipeline and a first exhaust hole. One end of the gas-liquid output pipeline is connected to the vacuum pump, and the first exhaust hole is provided at the other end; the gas formed after the vaporization of the first medium and the third medium is discharged into the accommodation chamber through the gas-liquid output pipeline and the first exhaust hole.

[0016] As a further improvement of the present invention, it further includes an energy output assembly, which includes a crankshaft and a connecting rod. The connecting rod is connected to the piston, and the crankshaft is connected to the connecting rod.

[0017] As a further improvement of the present invention, a support frame is connected to the outside of the housing for supporting the crankshaft.

[0018] As a further improvement of the present invention, it further includes a host computer, and the host computer controls the communication or closure between the gas-liquid injection assembly, the liquid injection assembly, and the gas-liquid pumping and discharging assembly and the cylinder.

[0019] As a further improvement of the present invention, a second exhaust hole is provided on the housing, and the second exhaust hole is connected to a recovery device or communicates with the external air.

[0020] As a further improvement of the present invention, a heat insulation layer is coated on the outside of the housing.

[0021] As long as the above improved technical features do not conflict with each other, they can be combined with each other.

[0022] Generally speaking, compared with the prior art by the above technical solutions conceived by the present invention, the beneficial effects include:

[0023] (1) The heat exchange device with auxiliary output of the present invention directly contacts the first medium and the third medium to generate a large amount of energy, and is connected to the piston to utilize the energy generated by the vaporization and expansion of the third medium. The cold utilization rate of the third medium is relatively high. This device has the advantages of high heat exchange efficiency, good economic benefits, simple system structure, fast refrigeration, etc., and can output mechanical energy to provide power for generators, pumps, etc. Therefore, the present invention has broad market prospects and economic and social application values in the fields of third medium refrigeration, heat exchangers and heat exchange systems for third medium vaporization, and power machinery.

[0024] (2) The heat exchange device with auxiliary output of the present invention adopts enhanced liquid-liquid and gas-liquid direct contact mixed heat exchange in the cylinder, reducing many heat transfer resistances. After the third medium vaporizes, it enters the first medium through the exhaust hole on the gas-liquid output pipeline and slowly rises, etc., and continuously exchanges heat with the first medium during this process, further improving the heat exchange efficiency of the system, and the overall heat exchange efficiency is relatively high.

[0025] (3) The heat exchange device with auxiliary output of the present invention is conducive to the third medium to fully absorb heat and vaporize, and thus can improve the utilization rate under the same usage amount of the third medium. The actual utilization rate of its latent heat of vaporization has been greatly improved compared with the traditional water bath heat exchanger, and the refrigerating capacity per unit mass of the third medium has been correspondingly increased, and the operating economy has been greatly improved.

[0026] (4) The heat exchange device with auxiliary output of the present invention absorbs heat through a third medium and then expands rapidly by vaporization to push a piston, enabling the piston to do work and driving the energy output component to do work simultaneously. This device effectively recovers and utilizes the expansion energy, can effectively perform external work, resulting in a relatively high utilization rate of the third medium, improving the economic efficiency of system operation, and having great social and economic benefits.

[0027] (5) The heat exchange device with auxiliary output in the present invention uses the heat exchange process between the first medium and the third medium for refrigeration, and utilizes the energy generated during the heat exchange process to perform external work, avoiding energy loss during the heat exchange process, improving the utilization rate, and having good economic benefits. Moreover, the substances undergoing heat exchange are directly in contact in the cylinder, with high heat exchange efficiency and less loss. This heat exchange device has a simple structure, does not require an active refrigeration device, has low operating noise, and meets the development needs of miniaturization of refrigeration and heat exchange equipment. It is particularly convenient for large-scale application in fields such as laser refrigeration, medical constant temperature water tanks, third medium vaporization, and power machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is a schematic diagram of the overall structure of the heat exchange device with auxiliary output in the embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of each stage in the cylinder of the heat exchange device with auxiliary output in the embodiment of the present invention;

[0031] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0032] 1, housing; 2, piston assembly; 3, first medium; 4, gas-liquid injection assembly; 5, liquid injection assembly; 6, gas-liquid pumping and discharging assembly; 7, energy output assembly; 8, host computer;

[0033] 101, second exhaust hole; 102, support frame;

[0034] 201, cylinder; 202, piston;

[0035] 401, gas-liquid pump; 402, gas-liquid input pipeline; 403, gas-liquid nozzle;

[0036] 501, third medium storage tank; 502, third medium pipeline; 503, high-pressure pump; 504, third medium nozzle;

[0037] 601, vacuum pump; 602, gas-liquid output pipeline; 603, first exhaust hole;

[0038] 701, crankshaft; 702, connecting rod. Specific embodiments

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0042] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0044] Embodiment:

[0045] Please refer to Figures 1 to 2 , the heat exchange device with auxiliary output in the preferred embodiment of the present invention includes a housing 1, as Figure 1 shown, the housing 1 includes a receiving cavity that can accommodate the first medium 3 and the first medium 3 does not fill the receiving cavity. Correspondingly, a piston assembly 2, a gas-liquid injection assembly 4, a liquid injection assembly 5, a gas-liquid pumping and discharging assembly 6 and an energy output assembly 7 are also provided for the housing 1.

[0046] Among them, the piston assembly 2 includes a cylinder 201 and a piston 202, and the piston 202 can reciprocate within the cylinder 201. The cylinder 201 is preferably arranged at the top of the housing 1 and partially located inside the housing 1 and partially protruding from the housing 1, so that the overall device can save space and have better effects. Specifically, during implementation, the cylinder 201 is rigidly connected to the top of the housing 1.

[0047] Specifically, in the preferred embodiment, the gas-liquid injection assembly 4 includes a gas-liquid pump 401, a gas-liquid input pipeline 402 and a gas-liquid nozzle 403. The gas-liquid nozzle 403 is communicated with the cylinder 201. One end of the gas-liquid input pipeline 402 is connected to the gas-liquid pump 401, and the other end is connected to the gas-liquid nozzle 403. It can be understood that at this time, the gas-liquid pump 401 floats on the surface of the first medium 3, sucks the first medium 3 and the air inside the housing 1, and the first medium 2 and the air inside the housing 1 are mixed to form a second medium of gas-liquid mixture, and are transmitted to the gas-liquid nozzle 403 through the gas-liquid input pipeline 402. The gas-liquid nozzle 403 injects the first medium 3 and the air inside the housing 1 into the cylinder 201.

[0048] It can be understood that the "gas-liquid injection assembly 4" refers to an assembly that can inject the second medium into the cylinder 201.

[0049] Among them, the gas-liquid pump 401 mixes the air inside the housing 1 and the first medium 3 and can provide a driving force to drive the second medium to move in the gas-liquid input pipeline 402. The gas-liquid nozzle 403 can be a valve, which is usually closed when not in use. It is communicated with the cylinder 201 and is preferably arranged at the bottom of the cylinder 201.

[0050] Specifically, in the preferred embodiment, the liquid injection assembly 5 includes a third medium storage tank 501, a third medium pipeline 502, a high-pressure pump 503, and a third medium nozzle 504. The third medium nozzle 504 communicates with the cylinder 201. One end of the third medium pipeline 502 is connected to the third medium storage tank 501, and the other end is connected to the third medium nozzle 504. It can be understood that the high-pressure pump 503 extracts the third medium in the third medium storage tank 501 and transfers it to the third medium nozzle 504 through the third medium pipeline 502, and the third medium nozzle 504 injects the third medium into the cylinder 201.

[0051] Similarly, the "liquid injection assembly 4" refers to an assembly capable of injecting the third medium into the cylinder 201.

[0052] Among them, the first medium 3 is preferably a refrigerant, specifically a mixed solution of water and ethylene glycol. The third medium is preferably a cryogenic liquid, which is in a liquid state when stored in the third medium storage tank 501, preferably a cryogenic liquid with a boiling point lower than 120K under standard atmospheric pressure. Specifically, liquid nitrogen is used, which is safe and has good economy. And, the temperature of the second medium is greater than the vaporization temperature of the third medium.

[0053] More specifically, in the preferred embodiment, the third medium pipeline 502 needs to be insulated and withstand a certain internal pipe pressure. It is usually made of insulating material, specifically preferably made of stainless steel. The third medium nozzle 504 can also be a valve, which is usually closed when not in use. It communicates with the cylinder 201 and is preferably arranged at the bottom of the cylinder 201.

[0054] Further, in the preferred embodiment, the gas-liquid extraction and discharge assembly 6 includes a vacuum pump 601, a gas-liquid output pipeline 602, and a first exhaust hole 603. One end of the gas-liquid output pipeline 602 is connected to the vacuum pump 601, and the other end is provided with the first exhaust hole 603. The vacuum pump 601 can extract the gas formed after the vaporization of the first medium 3 and the third medium in the cylinder 201 from the cylinder 201 and discharge it into the accommodation cavity.

[0055] It can be understood that when the first medium 3 and the third medium meet in the cylinder 201, a heat exchange reaction occurs between the two. The third medium absorbs heat and vaporizes to generate gas. At this time, the vacuum pump 601 communicates with the cylinder 201 and extracts the first medium 3 and the gas in the cylinder 201, facilitating the subsequent reaction of the first medium 3 and the third medium in the cylinder 201. The first medium 3 and the gas are discharged into the housing 1 through the gas-liquid output pipeline 602 and the first exhaust hole 603.

[0056] Among them, the gas-liquid output pipeline 602 preferably has an inverted T-shaped structure, such as Figure 1As shown, the horizontal portion of the gas-liquid output pipeline 602 is placed at the bottom of the first medium 3, and a plurality of first exhaust holes 603 are provided thereon, which can return the low-temperature nitrogen gas and the low-temperature first medium 3 generated after the reaction in the cylinder 201 to the first medium 3 at the bottom of the housing 1. Similarly, the vacuum pump 601 can be a valve, which is usually closed when not in use. It is connected to the cylinder 201 and is preferably arranged at the bottom of the cylinder 201.

[0057] Obviously, in the preferred embodiment, a second exhaust hole 101 is provided on the housing 1, and the second exhaust hole 101 is connected to a recovery device or communicates with the external air. When a large amount of gas is generated again after the reaction between the first medium 3 and the low-temperature gas, in order to avoid increasing the air pressure inside the housing 1, the second exhaust hole 101 can enable the gas inside the housing 1 to be naturally discharged. Further, the second exhaust hole 101 can also be connected to a recovery device, which can recover the gas formed after the third medium vaporizes, and can be reused repeatedly after being processed, which is more environmentally friendly.

[0058] Moreover, in the preferred embodiment, the outside of the housing 1 is heat-insulated, and usually the heat-insulating layer is coated for heat insulation. The housing 1 is further sealed. When the housing 1 is designed for sealing and heat insulation, it can reduce the influence of the external environment on the internal environment of the housing 1 and further improve the overall heat exchange efficiency of the device. When the temperature inside the housing 1 reaches a certain level, heat exchange will no longer be carried out.

[0059] In addition, in the preferred embodiment, one end of the piston 202 is connected to the cylinder 201 in a matching manner, and the other end is connected to the energy output component 7. The first medium 3 and the third medium exchange heat in the cylinder 201, so that the third medium vaporizes and expands to push the piston 202 to move in the cylinder 201 and drive the energy output component 7 to move. Specifically, in the preferred embodiment, the energy output component 7 includes a crankshaft 701 and a connecting rod 702. The connecting rod 702 is connected to the piston 202, and the crankshaft 701 is connected to the connecting rod 702.

[0060] It can be understood that the heat exchange between the first medium 3 and the third medium in the cylinder 201 releases a large amount of energy, and at the same time makes the third medium vaporize and expand, which can push the piston 202 to move upward, drive the connecting rod 702 to move, and thus drive the crankshaft 701 to generate a rotational motion. Utilizing the expansion work of the third medium vaporizing after contacting the mixture of gas and the first medium 3 in the cylinder 201, the piston 202 is pushed to do a linear motion, and finally it is converted into the rotational torque of the crankshaft 701 through the energy output component 7, so as to do work externally.

[0061] Preferably, in the preferred embodiment, a support frame 102 is connected to the outside of the housing 1 for supporting the crankshaft 701. During specific implementation, the crankshaft 701 is connected to the support frame 102 by a shaft, which can enable the crankshaft 701 to work better.

[0062] More preferably, the heat exchange device with auxiliary output of the present invention further includes a host computer 8, and the host computer 8 controls the communication or closing between the gas-liquid injection assembly 4, the liquid injection assembly 5, the gas-liquid pumping and discharging assembly 6 and the cylinder 201. It can be understood that the host computer 8 can control the opening and closing of the gas-liquid nozzle 403, the third medium nozzle 504 and the vacuum pump 601 in real time, so as to make the heat exchange reaction process controllable. When the host computer 8 is specifically implemented, it can be a microcomputer, which can sense the rotation direction of the crankshaft 701 to control the opening and closing of the gas-liquid nozzle 403, the third medium nozzle 504 and the vacuum pump 601 in real time, so as to realize the cyclic operation of the device.

[0063] This device can be used as a vapor compression refrigeration device to dissipate heat for heat sources such as lasers. When specifically implemented, as Figure 2 shown, the inside of the cylinder 201 is mainly divided into four strokes, which are, from left to right: intake stroke, compression stroke, expansion stroke and exhaust stroke. The piston 202 moves in the cylinder 201 with the highest point above (hereinafter referred to as the "top dead center") and the lowest point below (hereinafter referred to as the "bottom dead center"). In the initial state, when the host computer 8 receives that the crankshaft 701 rotates to a position corresponding to the piston 202 at the bottom dead center, it issues an instruction to open the gas-liquid nozzle 403 and performs an intake stroke in the cylinder 201, that is, injects a gas-liquid mixture of gas and the first medium 3 into the cylinder 201. At this time, the piston 202 moves upward due to the inertial movement of the crankshaft 701 and the intake action. After the crankshaft 701 rotates half a turn, the host computer 8 issues an instruction to close the gas-liquid nozzle 403. Thereafter, a compression stroke is performed in the cylinder 201, and the crankshaft 701 continues to rotate half a turn, corresponding to the piston 202 returning to the bottom dead center, and at this time the gas in the cylinder 201 is compressed. Then, the host computer 8 sends an instruction to open and quickly close the third medium nozzle 504, so that a certain amount of the third medium is injected into the cylinder 201, fully contacts with the existing gas-liquid mixture of gas and the first medium 3, and absorbs heat and vaporizes and expands to do work. This process is the expansion stroke. During this process, a large amount of energy is provided for the piston 202 and the crankshaft 701, so that the crankshaft 701 can continue to move. After the crankshaft 701 rotates half a turn, the piston 202 is at the top dead center and the expansion stroke is completed. The host computer 8 issues an instruction to open the vacuum pump 601 to perform an exhaust stroke. After the crankshaft 701 continues to rotate half a turn, when the corresponding piston 202 returns to the bottom dead center, the gas-liquid mixture in the cylinder 201 is evacuated, and at this time an instruction is issued to close the vacuum pump 601. And so on in a cycle.

[0064] The auxiliary output heat exchange device in the present invention uses the heat exchange process between the first medium and the third medium for refrigeration, and uses the energy generated during the heat exchange process to do external work, avoiding the loss of energy generated during the heat exchange process, improving the utilization rate, and having good economic benefits. Moreover, the substances undergoing heat exchange are directly in contact in the cylinder, with high heat exchange efficiency and small losses. The heat exchange device has a simple structure, does not require an active refrigeration device, has low operating noise, and meets the development needs of miniaturization of refrigeration and heat exchange equipment. It is particularly suitable for large-scale applications in fields such as laser refrigeration, medical constant temperature water tanks, third medium vaporization, and power machinery.

[0065] It is easy for those skilled in the art to understand that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat exchange device with auxiliary output, characterized in that, It includes a housing which includes a receiving cavity capable of receiving a first medium, and the first medium does not fill the receiving cavity; correspondingly, a piston assembly, a gas-liquid injection assembly, a liquid injection assembly and a gas-liquid pumping and discharging assembly are also provided for the housing; The piston assembly includes a piston and a cylinder, and the piston can reciprocate within the cylinder; The gas-liquid injection assembly includes a gas-liquid input pipeline and a gas-liquid pump. One end of the gas-liquid input pipeline communicates with the cylinder, and the other end is connected to the gas-liquid pump. The gas-liquid pump floats on the surface of the first medium and can simultaneously absorb the first medium and the air in the housing. The first medium and the air in the housing are mixed to form a second medium which is a gas-liquid mixture. The gas-liquid pump extracts the second medium and injects it into the cylinder through the gas-liquid input pipeline; The liquid injection assembly includes a high-pressure pump, a third medium storage tank and a third medium pipeline. The third medium stored in the third medium storage tank is a liquid; one end of the third medium pipeline is connected to the third medium storage tank, and the other end communicates with the cylinder. The high-pressure pump extracts the third medium and injects it into the cylinder through the third medium pipeline; The temperature of the second medium is greater than the vaporization temperature of the third medium; the third medium exchanges heat with the second medium in the cylinder and vaporizes into a gas, and the vaporization and expansion of the third medium push the piston to do external work; The gas-liquid pumping and discharging assembly includes a vacuum pump. One end of the vacuum pump communicates with the cylinder, and the other end communicates with the receiving cavity; the vacuum pump can extract the first medium and the gas formed after the third medium vaporizes in the cylinder and discharge them into the receiving cavity.

2. The heat exchange device with auxiliary output according to claim 1, wherein The gas-liquid injection assembly further includes a gas-liquid nozzle. One end of the gas-liquid nozzle communicates with the cylinder, and the other end is connected to the gas-liquid input pipeline.

3. The heat exchange device with auxiliary output according to claim 1, characterized in that, The liquid injection assembly further includes a third medium nozzle. One end of the third medium nozzle communicates with the cylinder, and the other end is connected to the third medium pipeline.

4. The heat exchange device with auxiliary output according to claim 1, characterized in that, The third medium pipeline is made of heat-insulating material.

5. The heat exchange device for auxiliary output according to claim 1, wherein The gas-liquid pumping and discharging assembly further includes a gas-liquid output pipeline and a first exhaust hole. One end of the gas-liquid output pipeline is connected to the vacuum pump, and the first exhaust hole is provided at the other end; the first medium and the gas formed after the third medium vaporize are discharged into the receiving cavity through the gas-liquid output pipeline and the first exhaust hole.

6. The heat exchange device with auxiliary output according to claim 1, wherein It further includes an energy output assembly which includes a crankshaft and a connecting rod. The connecting rod is connected to the piston, and the crankshaft is connected to the connecting rod.

7. The heat exchange device with auxiliary output according to claim 6, wherein, A support frame is connected to the outside of the housing for supporting the crankshaft.

8. The heat exchange device with auxiliary output according to claim 1, characterized in that, It further includes a host computer which controls the communication or closure between the gas-liquid injection assembly, the liquid injection assembly and the gas-liquid pumping and discharging assembly and the cylinder.

9. The heat exchange device with auxiliary output according to claim 1, characterized in that, A second exhaust hole is provided on the housing, and the second exhaust hole is connected to a recovery device or communicates with the external air.

10. The heat exchange device with auxiliary output according to claim 1, characterized in that, The outside of the housing is coated with a heat-insulating layer.

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