Gravity backflow type liquid circulation system

Abstract

The gravity backflow type liquid circulation system comprises a condensation module, an evaporation module and a liquid storage container, the position of the condensation module is higher than that of the liquid storage container, and the position of the liquid storage container is higher than that of the evaporation module; the condensation module communicates with the liquid inlet end of the liquid storage container through a first electromagnetic valve, the liquid outlet end of the liquid storage container communicates with the evaporation module through a second electromagnetic valve, and the evaporation module communicates with the liquid storage container through a third electromagnetic valve and communicates with the condensation module through an expansion machine. The utility model provides a gravity backflow type liquid circulation system which is simple in structure, energy-saving, efficient and high in reliability.

Description

Technical Field

[0001] This utility model relates to the field of liquid circulation technology, and more specifically to a gravity reflux liquid circulation system. Background Technology

[0002] Liquid circulation systems play a vital role in refrigeration, chemical engineering, and other fields. However, in traditional liquid circulation systems, the transfer of liquid between high- and low-pressure containers typically relies on power devices such as pumps or compressors, resulting in high energy consumption, complex structures, and high manufacturing costs. While some gravity-driven liquid circulation solutions exist, they often lack optimized designs for coordinated control of solenoid valves, leading to low liquid reflux efficiency or insufficient system stability. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides a gravity reflux liquid circulation system, which is simple in structure, energy-saving, efficient and reliable.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a gravity reflux liquid circulation system, including a condensation module, an evaporation module and a liquid storage container, wherein the condensation module is positioned higher than the liquid storage container, and the liquid storage container is positioned higher than the evaporation module;

[0005] The condensation module is connected to the inlet of the liquid storage container via a first solenoid valve, the outlet of the liquid storage container is connected to the evaporation module via a second solenoid valve, the evaporation module is connected to the liquid storage container via a third solenoid valve, and the evaporation module is connected to the condensation module via an expander.

[0006] In a preferred embodiment, the condensation module includes a condenser and a low-pressure container, with the low-pressure container positioned higher than the liquid storage container. One end of the condenser is connected to an expander, and the other end is connected to the low-pressure container. The low-pressure container is connected to the inlet of the liquid storage container via a first solenoid valve.

[0007] In a preferred embodiment, the evaporation module includes an evaporator and a high-pressure container, with the liquid storage container positioned higher than the high-pressure container. One end of the evaporator is connected to an expander, and the other end is connected to the high-pressure container. The high-pressure container is connected to the outlet of the liquid storage container via a second solenoid valve and to the liquid storage container via a third solenoid valve.

[0008] In a preferred embodiment, the high-pressure vessel is connected to the inlet of the liquid storage vessel via a third solenoid valve.

[0009] In a preferred embodiment, the high-pressure vessel is connected to the top of the liquid storage vessel via a third solenoid valve.

[0010] In a preferred embodiment, the liquid circulation system further includes a control module, which is connected to the first solenoid valve, the second solenoid valve and the third solenoid valve respectively.

[0011] The control module is used to control the first solenoid valve, the second solenoid valve and the third solenoid valve to switch alternately between the first working state and the second working state.

[0012] In the first working state, the first solenoid valve is open, and the second and third solenoid valves are both closed;

[0013] In the second operating state, the first solenoid valve is closed, while the second and third solenoid valves are both open.

[0014] In a preferred embodiment, the expander is a piston expander or a turbine expander.

[0015] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are:

[0016] A gravity-fed liquid circulation system employs the coordinated control of three solenoid valves. Through the combination of air pressure balance and gravity, the system can transfer liquid from condensation module 1 to evaporation module 2 without the need for an additional power unit. This simplifies the system structure, reduces manufacturing costs and maintenance difficulty, and is suitable for high and low temperature environments, exhibiting good stability and energy-saving performance.

[0017] In addition, other advantages of this invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the liquid circulation system in an embodiment of the present invention;

[0020] Figure 2 This is another structural schematic diagram of the liquid circulation system in an embodiment of this utility model;

[0021] Explanation of reference numerals in the attached drawings: 1. Condensation module; 11. Condenser; 12. Low-pressure vessel; 2. Evaporation module; 21. Evaporator; 22. High-pressure vessel; 3. Liquid storage vessel; 4. Expander; 101. First solenoid valve; 102. Second solenoid valve; 103. Third solenoid valve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] Reference Figure 1-2 This invention describes a gravity-fed liquid circulation system according to an embodiment of the present invention, which can be applied in refrigeration, chemical and other fields.

[0025] In one embodiment, such as Figure 1 As shown, a gravity-fed liquid circulation system includes a condensation module 1, an evaporation module 2, and a liquid storage container 3. The condensation module 1 is positioned higher than the liquid storage container 3, and the liquid storage container 3 is positioned higher than the evaporation module 2.

[0026] The condensing module 1 is connected to the inlet end of the liquid storage container 3 through the first solenoid valve 101, the outlet end of the liquid storage container 3 is connected to the evaporation module 2 through the second solenoid valve 102, the evaporation module 2 is connected to the liquid storage container 3 through the third solenoid valve 103, and the evaporation module 2 is connected to the condensing module 1 through the expander 4.

[0027] The condensing module 1 may include a condenser 11, and the evaporating module 2 may include an evaporator 21. The condenser 11 and the evaporator 21 may be condenser equipment and evaporator equipment commonly used in the prior art, respectively. In terms of height, the condensing module 1 is higher than the liquid storage container 3, and the liquid storage container 3 is higher than the evaporating module 2. The condensing module 1, the first solenoid valve 101, the liquid storage container 3, the second solenoid valve 102, the evaporating module 2 and the expander 4 are connected in sequence to form a liquid return channel.

[0028] In specific implementation, when the first solenoid valve 101 is open, the second solenoid valve 102 and the third solenoid valve 103 are closed, the gas pressure in the condensation module 1 and the liquid storage container 3 are equal, and the liquid in the condensation module 1 flows into the liquid storage container 3 under the action of gravity. When the first solenoid valve 101 is closed, the second solenoid valve 102 and the third solenoid valve 103 are open, the gas pressure in the evaporation module 2 and the liquid storage container 3 are equal, and the liquid in the liquid storage container 3 flows into the evaporation module 2 under the action of gravity, thus realizing gravity recirculation. Then, the liquid evaporates and vaporizes in the evaporation module 2, and the resulting high-temperature and high-pressure gas is discharged to the condensation module 1 through the expander 4, where it condenses into liquid and then flows back to the liquid storage container 3, realizing circulation.

[0029] The liquid circulation system described above can achieve continuous circulation of liquid by alternately switching the states of the first solenoid valve 101, the second solenoid valve 102 and the third solenoid valve 103.

[0030] The gravity-fed liquid circulation system provided in the above embodiments automatically transfers liquid between high and low pressure containers by means of gravity through the coordinated switching operation of the first solenoid valve 101, the second solenoid valve 102 and the third solenoid valve 103. It has a simple structure, requires no additional power device, and has the advantages of energy saving, high efficiency and high reliability.

[0031] In one implementation, such as Figure 2 As shown, the condensation module 1 includes a condenser 11 and a low-pressure container 12, with the low-pressure container 12 positioned higher than the liquid storage container 3;

[0032] One end of the condenser 11 is connected to the expander 4, and the other end is connected to the low-pressure container 12. The low-pressure container 12 is connected to the inlet of the liquid storage container 3 through the first solenoid valve 101.

[0033] The condenser 11 can be a commonly used condenser device in the prior art. Its input end is connected to the expander 4, and its output end is connected to the low-pressure container 12. The low-pressure container 12 is a low-pressure tank used to contain the liquid flowing out of the condenser 11.

[0034] Specifically, when the first solenoid valve 101 is opened and the second solenoid valve 102 and the third solenoid valve 103 are closed, the liquid in the low-pressure container 12 flows into the liquid storage container 3 under the action of gravity.

[0035] In one embodiment, the evaporation module 2 includes an evaporator 21 and a high-pressure container 22, with the liquid storage container 3 positioned higher than the high-pressure container 22.

[0036] One end of the evaporator 21 is connected to the expander 4, and the other end is connected to the high-pressure container 22. The high-pressure container 22 is connected to the liquid outlet of the liquid storage container 3 through the second solenoid valve 102, and is also connected to the liquid storage container 3 through the third solenoid valve 103.

[0037] The evaporator 21 can be a commonly used evaporator device in the prior art. Its output end is connected to the expander 4, and its input end is connected to the high-pressure container 22. The high-pressure container 22 is a high-pressure tank used to receive the liquid flowing out of the liquid storage container 3 and deliver it to the evaporator 21.

[0038] Specifically, when the second solenoid valve 102 and the third solenoid valve 103 are opened and the first solenoid valve 101 is closed, the liquid in the storage container 3 flows into the high-pressure container 22 under the action of gravity.

[0039] In one embodiment, the high-pressure container 22 is connected to the inlet end of the liquid storage container 3 via a third solenoid valve 103, so that when the third solenoid valve 103 is in the open state, the air pressure in the high-pressure container 22 is equal to the air pressure in the liquid storage container 3.

[0040] In another embodiment, the high-pressure container 22 is connected to the top of the liquid storage container 3 via a third solenoid valve 103. When the third solenoid valve 103 is open, the air pressure inside the high-pressure container 22 is equal to the air pressure inside the liquid storage container 3, allowing the liquid in the liquid storage container 3 to flow smoothly into the high-pressure container 22. Specifically...

[0041] In the above embodiment, since there is a certain temperature difference between the evaporator 21 and the liquid storage container 3, and the evaporator 21 is in a state where gas and liquid coexist, the temperature and gas pressure inside the high-pressure container 22 are higher than those inside the liquid storage container 3. There is also gas generated by evaporation inside the high-pressure container 22, which will affect the flow rate of the liquid and even hinder the liquid from flowing down. The above embodiment achieves connection by setting a third solenoid valve 103 between the high-pressure container 22 and the liquid storage container 3, so that the gas pressure inside the high-pressure container 22 is equal to the gas pressure inside the liquid storage container 3, thereby ensuring that the liquid flows smoothly into the high-pressure container 22.

[0042] In one embodiment, the above-mentioned liquid circulation system further includes a control module, which is connected to the first solenoid valve 101, the second solenoid valve 102 and the third solenoid valve 103 respectively.

[0043] The control module is used to control the first solenoid valve 101, the second solenoid valve 102 and the third solenoid valve 103 to switch alternately between the first working state and the second working state.

[0044] In the first working state, the first solenoid valve 101 is open, and the second solenoid valve 102 and the third solenoid valve 103 are both closed. At this time, the air pressure of the low-pressure container 12 and the liquid storage container 3 are balanced, and the liquid flows from the low-pressure container 12 into the liquid storage container 3 under the action of gravity.

[0045] In the second working state, the first solenoid valve 101 is closed, and the second solenoid valve 102 and the third solenoid valve 103 are both open. At this time, the pressure of the high-pressure container 22 and the liquid storage container 3 is balanced, and the liquid flows from the liquid storage container 3 into the high-pressure container 22 under the action of gravity.

[0046] The aforementioned liquid circulation system utilizes gravity to automatically transfer liquid between high and low pressure containers through the coordinated switching operation of solenoid valves, which can effectively reduce energy consumption and simplify the system structure.

[0047] In one embodiment, the expander 4 is a piston expander or a turbine expander.

[0048] Other configurations and operations of the gravity reflux liquid circulation system according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0050] In the description of this specification, references to the terms "embodiment," "specific embodiment," "example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0051] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any suitable manner in one or more embodiments or examples without interference or contradiction.

Claims

1. A liquid circulation system of the gravity return type, characterized in that: The device comprises a condensing module (1), an evaporating module (2) and a liquid storage container (3), the condensing module (1) is located higher than the liquid storage container (3), and the liquid storage container (3) is located higher than the evaporating module (2); The condensing module (1) is connected to the liquid inlet end of the liquid storage container (3) through a first electromagnetic valve (101), the liquid outlet end of the liquid storage container (3) is connected to the evaporating module (2) through a second electromagnetic valve (102), and the evaporating module (2) is connected to the liquid storage container (3) through a third electromagnetic valve (103).

2. A gravity return liquid circulating system according to claim 1, wherein: The condensing module (1) comprises a condenser (11) and a low-pressure container (12), and the low-pressure container (12) is located higher than the liquid storage container (3). One end of the condenser (11) is connected to the expander (4), and the other end is connected to the low-pressure container (12), and the low-pressure container (12) is connected to the liquid inlet end of the liquid storage container (3) through the first electromagnetic valve (101).

3. A gravity return hydronic system according to claim 2, wherein: The evaporating module (2) comprises an evaporator (21) and a high-pressure container (22), and the liquid storage container (3) is located higher than the high-pressure container (22). One end of the evaporator (21) is connected to the expander (4), and the other end is connected to the high-pressure container (22), the high-pressure container (22) is connected to the liquid outlet end of the liquid storage container (3) through the second electromagnetic valve (102), and is connected to the liquid storage container (3) through the third electromagnetic valve (103).

4. A gravity return hydronic system according to claim 3, wherein: The high-pressure container (22) is connected to the liquid inlet end of the liquid storage container (3) through the third electromagnetic valve (103).

5. A gravity return hydronic system as set forth in claim 3, wherein: The high-pressure container (22) is connected to the top of the liquid storage container (3) through the third electromagnetic valve (103).

6. A gravity return hydronic system as set forth in any of claims 1-5 and further characterized by: A control module is further included, and the control module is connected to the first electromagnetic valve (101), the second electromagnetic valve (102) and the third electromagnetic valve (103) respectively. The control module is used for controlling the first electromagnetic valve (101), the second electromagnetic valve (102) and the third electromagnetic valve (103) to alternately switch between a first working state and a second working state. In the first working state, the first electromagnetic valve (101) is opened, and the second electromagnetic valve (102) and the third electromagnetic valve (103) are both closed. In the second working state, the first electromagnetic valve (101) is closed, and the second electromagnetic valve (102) and the third electromagnetic valve (103) are both opened.

7. A gravity return hydronic system as set forth in claim 6, wherein: The expander (4) is a piston expander or a turbine expander.

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