Oil-gas separation device of auto-cascade carbon dioxide air source heat pump water heater

Abstract

The utility model relates to the technical field of oil-gas separation of air source heat pump water heaters, in particular to an oil-gas separation device of an auto-cascade carbon dioxide air source heat pump water heater. The technical problems that an existing oil-gas separation device of the air source heat pump water heater is usually difficult to separate out gas in time, so that part of gas enters along with movement of oil, and the separation efficiency is low are solved. According to the technical scheme, the oil-gas separation device of the auto-cascade carbon dioxide air source heat pump water heater comprises a bottom plate, a sedimentation assembly, a liquid pumping assembly, a rotating assembly, a centrifugal assembly, an exhaust assembly and a liquid collecting assembly; compared with a traditional oil-gas separation device of the air source heat pump water heater, the oil-gas separation device of the air source heat pump water heater has the advantages that compared with the problem that gas is difficult to discharge in time when the gas is separated, so that the gas enters oil again, a continuous extraction method is adopted in the oil-gas separation device of the air source heat pump water heater, and the separated gas is extracted out of the device in time; and the gas is prevented from entering the oil again along with the movement of the oil.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas separation of air source heat pump water heaters, in particular to an oil and gas separation device of a self-cascaded carbon dioxide air source heat pump water heater. Background Art

[0002] The cascade carbon dioxide air source heat pump water heater is a highly efficient device that uses the heat in the ambient air to heat water. Its working principle is based on the refrigeration cycle. The low-pressure refrigerant (carbon dioxide) is compressed into a high-pressure gas through a compressor, and then the heat is released to the water through a heat exchanger to increase the water temperature. After that, the high-pressure gas is reduced in pressure through an expansion valve and converted into a low-temperature and low-pressure gas to absorb the heat from the outside again, and this cycle repeats. In the heat pump system, the oil-gas separation device is one of the key components. Since the compressor will inhale air and lubricating oil during operation, these lubricating oils may flow into the system with the refrigerant. If the lubricating oil enters the heat exchanger, it will affect the heat exchange efficiency and may even cause damage to the heat exchanger. Therefore, the role of the oil-gas separation device is to ensure that the lubricating oil is separated from the refrigerant and returned to the compressor for reuse, while preventing oil from entering the heat exchanger and other system components. The oil-gas separation device of the existing air source heat pump water heater usually has difficulty in separating the gas in time when separating the gas, resulting in part of the gas entering the oil with the movement of the oil, resulting in low separation efficiency. Utility Model Content

[0003] In order to overcome the problem that the oil-gas separation device of the air source heat pump water heater is usually difficult to separate the gas in time when separating the gas, resulting in part of the gas entering the oil with the movement of the oil, resulting in low separation efficiency.

[0004] The technical solution of the utility model is: an oil-gas separation device for a self-cascaded carbon dioxide air source heat pump water heater, comprising a bottom plate, a sedimentation component, a liquid pumping component, a rotating component, a centrifugal component, an exhaust component and a liquid collecting component; a sedimentation component for preliminarily removing gas by utilizing the principle that the density of oil is greater than that of gas is arranged above the bottom plate, a liquid pumping component is arranged below the sedimentation component, a rotating component is arranged on the inner side wall of the sedimentation component, a centrifugal component for separating oil and gas by centrifugal force is arranged on one side of the rotating component, an exhaust component is arranged above the rotating component, and a liquid collecting component is arranged below the exhaust component.

[0005] Preferably, by setting a sedimentation component, the principle that the density of oil is greater than that of gas can be utilized. The heavier oil settles to the bottom under the action of gravity, while the lighter gas rises and is discharged. By setting a liquid extraction component, the oil can be injected into the centrifugal component for further separation of the gas. By setting a rotating component, power can be provided for the rotation of the centrifugal component. By setting a centrifugal component, centrifugal force can be used to separate the oil and gas. The oil droplets are thrown to the wall due to their high density, and the gas is retained in the central area due to its low density. By setting an exhaust component, the gas in the central area can be discharged in time to prevent residual gas from entering the oil. By setting a liquid collecting component, the separated oil can be collected in a unified manner.

[0006] Preferably, the sedimentation assembly includes a centrifugal separation box, a support column, a sedimentation cylinder, a liquid inlet pipe, a first exhaust pipe and a first fan; a centrifugal separation box is arranged above the bottom plate, a support column is arranged above the centrifugal separation box, four groups of support columns are arranged, a sedimentation cylinder is arranged above the support column, a liquid inlet pipe is arranged above the sedimentation cylinder, a first exhaust pipe is arranged on one side of the liquid inlet pipe, and a first fan is arranged on the inner bottom surface of the first exhaust pipe. When in use, four groups of support columns can be provided to provide a stable support for the sedimentation cylinder, and the oil-gas mixture enters the sedimentation cylinder from the liquid inlet pipe. Utilizing the principle that the density of oil is greater than that of gas, the heavier oil settles to the bottom of the container under the action of gravity, while the lighter gas rises. The first fan is started to suck the gas into the first exhaust pipe, and then the gas is discharged out of the device through the first exhaust pipe, thereby achieving the effect of preliminary gas removal.

[0007] Preferably, the liquid pumping assembly includes a liquid pump and a liquid pumping pipe; a liquid pump is arranged below the sedimentation cylinder, and two groups of liquid pumps are arranged; a liquid pumping pipe is arranged below the liquid pump, and two groups of liquid pumping pipes are arranged. The liquid pumping pipes pass through the centrifugal separation box. When in use, the two groups of liquid pumps are turned on to pump the oil that has been preliminarily exhausted into the two groups of liquid pumping pipes, and then injected into the side wall of the cylindrical drum.

[0008] Preferably, the rotating assembly includes a fixed plate, a rotating column, a motor and a first transmission gear; the inner side wall of the centrifugal separation box is provided with a fixed plate, four groups of fixed plates are provided, a rotating column is provided above the fixed plate, four groups of rotating columns are provided, the rotating column passes through the fixed plate, a motor is provided above the rotating column, four groups of motors are provided, the output end of the motor is rotatably connected to the rotating column, a first transmission gear is provided below the rotating column, four groups of first transmission gears are provided, when in use, the four groups of motors are started to drive the rotating column to rotate, which can drive the four groups of first transmission gears to rotate, thereby driving the cylindrical drum to rotate, which can provide sufficient power for the rotation of the cylindrical drum.

[0009] Preferably, the centrifugal assembly includes a second transmission gear, a cylindrical drum, a solenoid valve and a first drainage pipe; a second transmission gear is arranged on one side of the first transmission gear, the second transmission gear is meshingly connected with the first transmission gear, a cylindrical drum is arranged inside the second transmission gear, a solenoid valve is arranged below the cylindrical drum, and a first drainage pipe is arranged below the solenoid valve. When in use, the high-speed rotation of the cylindrical drum and the centrifugal force further separate the oil and gas. The oil is thrown to the inner wall due to its high density and flows downward along the wall, while the gas is kept in the central area of ​​the cylindrical drum due to its low density and the centrifugal force it is subjected to. The solenoid valve is opened to draw the oil into the first drainage pipe and then injected into the bottom of the centrifugal separation box for temporary storage.

[0010] Preferably, the exhaust assembly includes a second exhaust pipe and a second fan; a second exhaust pipe is arranged above the fixed plate, the second exhaust pipe runs through the centrifugal separation box, and a second fan is arranged on one side of the second exhaust pipe. When in use, starting the second fan can timely extract the gas in the central area of ​​the cylindrical drum out of the device to prevent the gas from accumulating and re-entering the oil with the movement of the oil.

[0011] Preferably, the liquid collecting component includes a drainage pump and a second drainage pipe; a drainage pump is arranged below the second fan, and a second drainage pipe is arranged on one side of the drainage pump. When in use, the drainage pump is started to draw the oil at the bottom of the centrifugal separation box into the second drainage pipe, and then the oil is discharged from the second drainage pipe for unified collection.

[0012] Beneficial effects of the utility model:

[0013] 1. Compared with the traditional air source heat pump water heater oil and gas separation device, which is difficult to discharge the gas in time when separating the gas, resulting in the problem of re-entry into the oil, the oil and gas separation device of the air source heat pump water heater adopts a continuous extraction method to extract the separated gas out of the device in time, avoiding gas accumulation and re-entering the oil with the movement of the oil;

[0014] 2. Start the four motors to drive the rotating column to rotate, which can drive the four first transmission gears to rotate, thereby driving the cylindrical drum to rotate, which can provide sufficient power for the rotation of the cylindrical drum. The high-speed rotation of the cylindrical drum and the centrifugal force further separate the oil and gas. The oil is thrown to the inner wall due to its high density and flows downward along the wall, while the gas is kept in the center area of ​​the cylindrical drum due to its low density and small centrifugal force. The second fan can be used to extract the gas in the center area of ​​the cylindrical drum out of the device in time to prevent the gas from accumulating and entering the oil again with the movement of the oil.

[0015] 3. By setting up four groups of support columns, a stable support effect can be provided for the sedimentation cylinder. The oil-gas mixture enters the sedimentation cylinder from the liquid inlet pipe. Based on the principle that the density of oil is greater than that of gas, the heavier oil settles to the bottom of the container under the action of gravity, while the lighter gas rises. The first fan is started to suck the gas into the first exhaust pipe, and then the gas is discharged from the device through the first exhaust pipe, thereby achieving the effect of preliminary gas removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The diagram shows a left-side stereoscopic structure diagram of the oil-gas separation device of the air source heat pump water heater of the utility model;

[0017] Figure 2 The schematic diagram of the cross-sectional three-dimensional structure of the oil-gas separation device sedimentation component and the liquid extraction component of the air source heat pump water heater of the utility model is shown;

[0018] Figure 3 The diagram shows a cross-sectional three-dimensional structure of a rotating assembly and a centrifugal assembly of an oil-gas separation device of an air source heat pump water heater of the utility model;

[0019] Figure 4 Shown is a three-dimensional structural schematic diagram of the exhaust component and liquid collecting component of the oil-gas separation device of the air source heat pump water heater of the utility model;

[0020] Explanation of the reference numerals: 1. bottom plate; 2. sedimentation assembly; 3. liquid extraction assembly; 4. rotating assembly; 5. centrifugal assembly; 6. exhaust assembly; 7. liquid collecting assembly; 201. centrifugal separation box; 202. support column; 203. sedimentation cylinder; 204. liquid inlet pipe; 205. first exhaust pipe; 206. first fan; 301. liquid extraction pump; 302. liquid extraction pipe; 401. fixed plate; 402. rotating column; 403. motor; 404. first transmission gear; 501. second transmission gear; 502. cylindrical drum; 503. solenoid valve; 504. first liquid discharge pipe; 601. second exhaust pipe; 602. second fan; 701. liquid discharge pump; 702. second liquid discharge pipe. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] See also Figure 1The utility model provides an embodiment: an oil-gas separation device of a self-cascade carbon dioxide air source heat pump water heater, comprising a bottom plate 1, a sedimentation component 2, a liquid pumping component 3, a rotating component 4, a centrifugal component 5, an exhaust component 6 and a liquid collecting component 7; a sedimentation component 2 for preliminarily removing gas by utilizing the principle that the density of oil is greater than that of gas is arranged above the bottom plate 1, a liquid pumping component 3 is arranged below the sedimentation component 2, a rotating component 4 is arranged on the inner side wall of the sedimentation component 2, a centrifugal component 5 for separating oil and gas by centrifugal force is arranged on one side of the rotating component 4, an exhaust component 6 is arranged above the rotating component 4, and a liquid collecting component 7 is arranged below the exhaust component 6.

[0023] See also Figure 2 In this embodiment, the sedimentation assembly 2 includes a centrifugal separation box 201, a support column 202, a sedimentation cylinder 203, a liquid inlet pipe 204, a first exhaust pipe 205 and a first fan 206; a centrifugal separation box 201 is arranged above the bottom plate 1, a support column 202 is arranged above the centrifugal separation box 201, four groups of support columns 202 are arranged, a sedimentation cylinder 203 is arranged above the support column 202, a liquid inlet pipe 204 is arranged above the sedimentation cylinder 203, a first exhaust pipe 205 is arranged on one side of the liquid inlet pipe 204, and a first fan 206 is arranged on the inner bottom surface of the first exhaust pipe 205. When in use, the four groups of support columns 202 can provide a stable support for the sedimentation cylinder 203, and the oil-gas mixture enters the sedimentation cylinder 2 from the liquid inlet pipe 204. 03. Utilizing the principle that the density of oil is greater than that of gas, the heavier oil settles to the bottom of the container under the action of gravity, while the lighter gas rises. The first fan 206 is started to suck the gas into the first exhaust pipe 205, and then the gas is discharged out of the device through the first exhaust pipe 205, so as to achieve the effect of preliminary gas removal. The liquid extraction component 3 includes a liquid extraction pump 301 and a liquid extraction pipe 302; a liquid extraction pump 301 is arranged below the sedimentation cylinder 203, and two groups of liquid extraction pumps 301 are arranged. A liquid extraction pipe 302 is arranged below the liquid extraction pump 301, and two groups of liquid extraction pipes 302 are arranged. The liquid extraction pipe 302 runs through the centrifugal separation box 201. When in use, the two groups of liquid extraction pumps 301 are turned on to extract the oil that has been preliminarily exhausted into the two groups of liquid extraction pipes 302, and then injected into the side wall of the cylindrical drum 502.

[0024] See also Figure 3In this embodiment, the rotating assembly 4 includes a fixed plate 401, a rotating column 402, a motor 403 and a first transmission gear 404; the inner side wall of the centrifugal separation box 201 is provided with a fixed plate 401, and the fixed plate 401 is provided with four groups. A rotating column 402 is provided above the fixed plate 401, and the rotating column 402 is provided with four groups. The rotating column 402 passes through the fixed plate 401, and a motor 403 is provided above the rotating column 402, and the motor 403 is provided with four groups. The output end of the motor 403 is rotatably connected with the rotating column 402, and a first transmission gear 404 is provided below the rotating column 402, and the first transmission gear 404 is provided with four groups. When in use, the four groups of motors 403 are started to drive the rotating column 402 to rotate, which can drive the four groups of first transmission gears 404 to rotate, thereby driving the cylindrical drum 502 to rotate, which can provide sufficient rotation for the cylindrical drum 502. Power, the centrifugal assembly 5 includes a second transmission gear 501, a cylindrical drum 502, a solenoid valve 503 and a first liquid discharge pipe 504; the second transmission gear 501 is arranged on one side of the first transmission gear 404, the second transmission gear 501 is meshed and connected with the first transmission gear 404, the cylindrical drum 502 is arranged inside the second transmission gear 501, the solenoid valve 503 is arranged below the cylindrical drum 502, and the first liquid discharge pipe 504 is arranged below the solenoid valve 503. When in use, the high-speed rotation of the cylindrical drum 502 is utilized, and due to the centrifugal force, the oil and gas are further separated. The oil is thrown to the inner wall due to its high density and flows downward along the wall, while the gas is kept in the central area of ​​the cylindrical drum 502 due to its low density and small centrifugal force. The solenoid valve 503 is opened to pump the oil into the first liquid discharge pipe 504, and then injected into the bottom of the centrifugal separation box 201 for temporary storage.

[0025] See also Figure 4 In this embodiment, the exhaust component 6 includes a second exhaust pipe 601 and a second fan 602; a second exhaust pipe 601 is arranged above the fixed plate 401, the second exhaust pipe 601 runs through the centrifugal separation box 201, and a second fan 602 is arranged on one side of the second exhaust pipe 601. When in use, starting the second fan 602 can timely extract the gas in the central area of ​​the cylindrical drum 502 out of the device to avoid gas accumulation and re-entering the oil with the movement of the oil. The liquid collecting component 7 includes a drainage pump 701 and a second drainage pipe 702; a drainage pump 701 is arranged below the second fan 602, and a second drainage pipe 702 is arranged on one side of the drainage pump 701. When in use, starting the drainage pump 701 will draw the oil at the bottom of the centrifugal separation box 201 into the second drainage pipe 702, and then discharge it from the second drainage pipe 702 for unified collection.

[0026] When the oil-gas separation device of the air source heat pump water heater separates gas, four groups of support columns 202 are set to provide stable support for the settling cylinder 203. The oil-gas mixture enters the settling cylinder 203 from the liquid inlet pipe 204. Based on the principle that the density of oil is greater than that of gas, the heavier oil settles to the bottom of the container under the action of gravity, while the lighter gas rises. The first fan 206 is started to suck the gas into the first exhaust pipe 205, and then the gas is discharged from the device through the first exhaust pipe 205. The two groups of liquid pumps 301 are turned on to pump the oil that has been preliminarily exhausted into the two groups of liquid pumping pipes 302, and then injected into the side wall of the cylindrical drum 502. The four groups of motors 403 are started to drive the rotating column 402 to rotate, and drive the four groups of first transmission gears 404 to rotate, thereby driving the cylindrical drum 502. The cylindrical drum 502 rotates, and the oil and gas are further separated due to the centrifugal force by utilizing the high-speed rotation of the cylindrical drum 502. The oil is thrown toward the inner wall due to its high density and flows downward along the wall, while the gas is kept in the central area of ​​the cylindrical drum 502 due to its low density and small centrifugal force. The solenoid valve 503 is opened to pump the oil into the first drain pipe 504, and then injected into the bottom of the centrifugal separation box 201 for temporary storage. The second fan 602 is started to timely extract the gas in the central area of ​​the cylindrical drum 502 out of the device to prevent the gas from accumulating and entering the oil again with the movement of the oil. The drainage pump 701 is started to pump the oil at the bottom of the centrifugal separation box 201 into the second drain pipe 702, and then discharged from the second drain pipe 702 for unified collection.

[0027] Through the above steps, by setting the sedimentation component 2, the principle that the density of oil is greater than that of gas can be utilized. The heavier oil settles to the bottom under the action of gravity, while the lighter gas rises and is discharged. By setting the liquid extraction component 3, the oil can be injected into the centrifugal component 5 for further separation of the gas. By setting the rotating component 4, the rotation of the centrifugal component 5 can be powered. By setting the centrifugal component 5, the oil and gas can be separated by centrifugal force. The oil droplets are thrown to the wall due to their high density, and the gas is retained in the central area due to its low density. By setting the exhaust component 6, the gas in the central area can be discharged in time to prevent residual gas from entering the oil. By setting the liquid collecting component 7, the separated oil can be collected in a unified manner.

[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. An oil-gas separation device for a self-cascaded carbon dioxide air source heat pump water heater, comprising a bottom plate (1); characterized in that: It also comprises a sedimentation component (2), a liquid extraction component (3), a rotating component (4), a centrifugal component (5), an exhaust component (6) and a liquid collection component (7); a sedimentation component (2) for preliminarily removing gas by using the principle that the density of oil is greater than that of gas is arranged above the bottom plate (1); a liquid extraction component (3) is arranged below the sedimentation component (2); a rotating component (4) is arranged on the inner side wall of the sedimentation component (2); a centrifugal component (5) for separating oil and gas by using centrifugal force is arranged on one side of the rotating component (4); an exhaust component (6) is arranged above the rotating component (4); and a liquid collection component (7) is arranged below the exhaust component (6).

2. The oil-gas separation device of the self-cascade carbon dioxide air source heat pump water heater according to claim 1, characterized in that: The sedimentation assembly (2) comprises a centrifugal separation box (201), a support column (202), a sedimentation cylinder (203), a liquid inlet pipe (204), a first exhaust pipe (205) and a first fan (206); a centrifugal separation box (201) is arranged above the bottom plate (1), a support column (202) is arranged above the centrifugal separation box (201), four groups of support columns (202) are arranged above the support columns (202), a sedimentation cylinder (203) is arranged above the sedimentation cylinder (203), a liquid inlet pipe (204) is arranged above the sedimentation cylinder (203), a first exhaust pipe (205) is arranged on one side of the liquid inlet pipe (204), and a first fan (206) is arranged on the inner bottom surface of the first exhaust pipe (205).

3. The oil-gas separation device of the self-cascade carbon dioxide air source heat pump water heater according to claim 1, characterized in that: The liquid extraction component (3) comprises a liquid extraction pump (301) and a liquid extraction pipe (302); the liquid extraction pump (301) is arranged below the sedimentation cylinder (203), two groups of the liquid extraction pump (301) are arranged, and the liquid extraction pipe (302) is arranged below the liquid extraction pump (301), two groups of the liquid extraction pipe (302) are arranged, and the liquid extraction pipe (302) runs through the centrifugal separation box (201).

4. The oil-gas separation device of the self-cascade carbon dioxide air source heat pump water heater according to claim 2, characterized in that: The rotating assembly (4) comprises a fixed plate (401), a rotating column (402), a motor (403) and a first transmission gear (404); the inner side wall of the centrifugal separation box (201) is provided with a fixed plate (401), and the fixed plate (401) is provided in four groups; a rotating column (402) is provided above the fixed plate (401), and the rotating column (402) is provided in four groups; the rotating column (402) penetrates the fixed plate (401); a motor (403) is provided above the rotating column (402), and the motor (403) is provided in four groups; the output end of the motor (403) is rotatably connected to the rotating column (402); a first transmission gear (404) is provided below the rotating column (402), and the first transmission gear (404) is provided in four groups.

5. The oil-gas separation device of the self-cascade carbon dioxide air source heat pump water heater according to claim 4, characterized in that: The centrifugal assembly (5) comprises a second transmission gear (501), a cylindrical drum (502), an electromagnetic valve (503) and a first liquid discharge pipe (504); the second transmission gear (501) is arranged on one side of the first transmission gear (404), the second transmission gear (501) is meshedly connected with the first transmission gear (404), a cylindrical drum (502) is arranged inside the second transmission gear (501), a electromagnetic valve (503) is arranged below the cylindrical drum (502), and a first liquid discharge pipe (504) is arranged below the electromagnetic valve (503).

6. The oil-gas separation device of the self-cascade carbon dioxide air source heat pump water heater according to claim 4, characterized in that: The exhaust assembly (6) comprises a second exhaust pipe (601) and a second fan (602); the second exhaust pipe (601) is arranged above the fixed plate (401), the second exhaust pipe (601) passes through the centrifugal separation box (201), and the second fan (602) is arranged on one side of the second exhaust pipe (601).

7. The oil-gas separation device of the self-cascade carbon dioxide air source heat pump water heater according to claim 6, characterized in that: The liquid collecting component (7) comprises a liquid drainage pump (701) and a second liquid drainage pipe (702); the liquid drainage pump (701) is arranged below the second fan (602), and the second liquid drainage pipe (702) is arranged on one side of the liquid drainage pump (701).

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