Dual combined supply unit with liquid storage function for 3P efficient tank

Abstract

A dual combined supply unit with a 3P efficient tank and a liquid storage function is integrally in the shape of a cylindrical tank body, and the tank body is specifically and structurally divided into an upper end cover, a lower end cover, an outer barrel body and an inner container. A heat exchange coil pipe and a baffle plate which are spirally wound are arranged in an outer barrel and an inner container, a refrigerant medium enters the position between the outer barrel and the inner container from a medium pipe inlet in a shell, spirally flows along the baffle plate from top to bottom, and exchanges heat with a flowing medium in the heat exchange coil pipe in the flowing process; four communicating liquid guide holes evenly distributed in the inner container are formed in the lower portion of the inner container, after heat exchange is completed, the refrigerant media continue to flow downwards and flow into the middle of the inner container through the liquid guide holes, after the whole tank body space is filled with the refrigerant media, the refrigerant media flow upwards along a refrigerant medium outlet pipe in the inner container, and the refrigerant media flow downwards along the refrigerant medium outlet pipe in the inner container. And finally, the refrigerant flows out from a pipe orifice of the refrigerant medium outlet pipe above the end cover, so that a working cycle of the efficient tank is completed. The heat exchange efficiency of different media can be effectively improved, and the energy utilization rate can be increased.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and in particular to a dual-supply unit with a 3P high-efficiency tank and liquid storage function. Background Technology

[0002] First, currently, in some conventional heat exchangers used in heat pump systems, the water in the shell side and the refrigerant in the tube side are in a state of relative motion and convection during the operation of the heat exchanger. This working mode results in a short heat exchange time, which leads to insufficient heat exchange, low energy utilization, and low heat exchange efficiency.

[0003] Secondly, the heat exchanger is subjected to high pressure during operation, and there is a risk of the tank rupture during normal high-efficiency operation.

[0004] Third, during the production of heat exchangers, some parts lack positioning points during assembly and welding. Therefore, the assembly dimensions must be measured before welding, which reduces production efficiency. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by proposing a dual-supply unit with a 3P high-efficiency tank and liquid storage function, which has high heat exchange efficiency.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution: a 3P high-efficiency tank with liquid storage function dual-supply unit, characterized in that: it includes a cylindrical tank body, the tank body is provided with an outer cylinder and an inner liner, and heat exchange coils and baffles are provided in the outer cylinder and the inner liner.

[0007] The baffle is spirally wound between the outer cylinder and the inner liner. The two sides of the baffle are sealed to the outer cylinder and the inner liner respectively. The cavity between the outer cylinder and the inner liner is divided into a spiral refrigerant flow channel by the baffle. The heat exchange coil is spirally wound in the spiral refrigerant flow channel. The upper end of the heat exchange coil is set as the water outlet and the lower end of the heat exchange coil is set as the water inlet. The upper end of the tank is provided with a refrigerant inlet and a refrigerant outlet. The refrigerant inlet is connected to the upper part of the spiral refrigerant flow channel and the refrigerant outlet is connected to the inner cavity of the inner liner. The lower part of the inner liner is provided with a liquid guide hole that connects the spiral refrigerant flow channel to the inner cavity of the inner liner.

[0008] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: the tank is provided with an upper end cover and a lower end cover, the refrigerant inlet is located on the upper part of the outer cylinder wall, and the refrigerant outlet is located on the upper end cover.

[0009] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: an outlet pipe is provided at the refrigerant outlet, the lower end of the outlet pipe extends into the lower part of the inner liner, and the upper end of the outlet pipe is located outside the upper end cover.

[0010] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: after the outer cylinder is welded, two explosion-proof plates are welded in the middle of the symmetrical tank.

[0011] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: two symmetrical through holes need to be drilled in the middle of the explosion-proof sheet.

[0012] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: four connecting liquid guiding holes are provided, each with a diameter of 16mm.

[0013] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: the heat exchange coil is a finned tube.

[0014] Compared with the prior art, the internal refrigerant flows from top to bottom along the direction of the baffle plate, while the water flows spirally from bottom to top in the heat exchange coil, thus exchanging heat between the media. The inner tank and the outer barrel form a meandering heat exchange space for liquid inlet and storage, allowing the heat exchange coil to be immersed in the shell-side medium for a longer time for heat exchange. Through longer contact time, the heat exchange efficiency is higher. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall installation of this utility model;

[0016] Figure 2 This is the front view of this utility model;

[0017] Figure 3 This is the AA view of this utility model;

[0018] Figure 4 This is a partial enlarged view of the positioning step of the upper end cover of this utility model;

[0019] In the diagram: 1-Tank body, 2-Heat exchange coil, 3-Explosion-proof plate (reinforcing plate), 4-Supporting foot, 5-Refrigerant inlet pipe, 6-Refrigerant outlet pipe. Detailed Implementation

[0020] A 3P high-efficiency tank-type combined heat and power unit with liquid storage function includes a cylindrical tank body, which has an outer cylinder and an inner liner. Heat exchange coils and baffles are installed in the outer cylinder and the inner liner.

[0021] The baffle plate is spirally wound between the outer cylinder and the inner liner. Both sides of the baffle plate are sealed to the outer cylinder and the inner liner respectively. The cavity between the outer cylinder and the inner liner is divided into a spiral refrigerant flow channel by the baffle plate. The heat exchange coil is spirally wound within this spiral refrigerant flow channel. The upper end of the heat exchange coil is designated as the water outlet, and the lower end as the water inlet. The upper end of the tank has a refrigerant inlet and a refrigerant outlet. The refrigerant inlet communicates with the upper part of the spiral refrigerant flow channel, and the refrigerant outlet communicates with the inner cavity of the inner liner. A liquid guide hole is located at the lower part of the inner liner, connecting the spiral refrigerant flow channel to the inner cavity of the inner liner. During operation of the high-efficiency tank, the refrigerant flows downwards according to the direction of the baffle plate, while water flows spirally upwards in the heat exchange coil, facilitating heat exchange between the media.

[0022] The tank is equipped with an upper end cover and a lower end cover. The refrigerant inlet is located on the upper part of the outer cylinder wall, and the refrigerant outlet is located on the upper end cover.

[0023] An outlet pipe is installed at the refrigerant outlet. The lower end of the outlet pipe extends into the lower part of the inner liner, while the upper end of the outlet pipe is located outside the upper cover.

[0024] After the outer cylinder is welded, two explosion-proof plates are welded to the center of the symmetrical tank. This additional step, welding two explosion-proof plates to the center of the symmetrical tank, ensures that the tank is not easily ruptured under high pressure, greatly improving the pressure-bearing capacity of the high-efficiency tank and enhancing its safety.

[0025] After the explosion-proof sheet is welded, the tank body needs to be sprayed and rust-proofed. During the spraying process, due to the excessive length of the explosion-proof sheet, part of the tank body is blocked by the sheet, resulting in incomplete spraying and increasing safety hazards. The present invention addresses this by drilling two symmetrical through holes in the middle of the explosion-proof sheet. The purposes are twofold: first, to position the explosion-proof sheet and the tank body for easier welding; and second, to ensure proper spraying and reduce safety hazards.

[0026] Two symmetrical through holes are required in the center of the explosion-proof plate. Four connecting liquid guide holes, each 16mm in diameter, are provided. The small diameter of the connecting liquid guide holes limits the flow rate of the shell-side medium, thus controlling the residence time of the shell-side medium within the cylindrical tank and improving heat exchange efficiency.

[0027] The heat exchange coil is a finned tube. Before exiting the outer shell, the finned tube end of the heat exchange coil must be made smooth to prevent leaks during welding to the shell. Furthermore, the inlet of the heat exchange coil is flared, reducing costs and improving the seal after welding to the piping.

[0028] The cold medium enters the space between the outer cylinder and the inner liner through the medium inlet on the outer shell, and flows spirally downwards along the baffle plate. During this flow, it exchanges heat with the medium flowing in the heat exchange coil. Four evenly distributed liquid guiding holes are located at the bottom of the inner liner. After completing the heat exchange, the cold medium continues to flow downwards, entering the middle of the inner liner through the liquid guiding holes. When the cold medium fills the entire tank space (including the space between the outer cylinder and the inner liner, and the space in the middle of the inner liner), it flows upwards along the cold medium outlet pipe in the inner liner, finally exiting from the cold medium outlet pipe above the end cap, completing one working cycle of the high-efficiency tank. In actual operation, the working cycle of the high-efficiency tank is continuous and uninterrupted. This structural design effectively improves the heat exchange efficiency of different media, increases energy utilization, and also provides a certain liquid storage function.

[0029] The specific structure is shown in the figure:

[0030] The 3P high-efficiency tank-type dual-supply unit with liquid storage function has an overall cylindrical tank body 1. The tank body is specifically structured as an upper end cover, a lower end cover, an outer cylinder, and an inner liner (core tube). Heat exchange coils 2 and baffles are installed in the outer cylinder and inner liner. The heat exchange coils are spirally wound, with the upper opening as the water outlet and the lower opening as the water inlet. The baffles are also spirally wound and evenly distributed in the middle of the heat exchange coils. Three support feet 4 are located at the bottom of the lower end cover, evenly distributed around the circumference of the lower end cover. Mounting holes are located in the middle of the support feet, through which the high-efficiency tank is fixed.

[0031] The tank structure consists of an outer cylinder and an inner liner. To facilitate positioning and welding processes, the inner liner is higher than the outer cylinder. After welding, it is sealed, resulting in good sealing performance.

[0032] The outer cylinder and inner liner contain a spirally wound heat exchange coil and a spirally wound baffle plate. The outer wall of the heat exchange coil has heat exchange fins along the tube direction. The lower opening of the heat exchange coil is the water inlet, and the upper opening is the water outlet. Normally, the medium inside the heat exchange coil is water, and the medium inside the tank is refrigerant. After entering the heat exchange coil, water undergoes heat exchange through the coil wall. The outer cylinder has a refrigerant inlet pipe 6 that enters the tank. The refrigerant enters the tank through the refrigerant inlet pipe 6, and the medium flows spirally from top to bottom along the baffle plate. Near the lower end cover of the inner liner, four interconnecting liquid guide holes are evenly distributed around the circumference of the cylinder. The diameter of each interconnecting liquid guide hole is 16 mm. When the cold medium flows to the lower middle part between the outer cylinder and the inner liner, it flows into the inner liner along the four connecting liquid guide holes. According to the siphon principle, the liquid levels in the outer cylinder and the inner liner are at the same level. When the cold medium in the space between the outer cylinder and the inner liner fills the entire space, the cold medium flows into the inner liner from the space between the outer cylinder and the inner liner, filling the inner liner space.

[0033] The upper end cap has an opening at the center to provide a cooling medium outlet pipe 5. The lower end of the copper pipe is beveled, and the upper end of the copper pipe is flared and extends out of the upper end cap.

[0034] Four interconnected liquid guiding holes are evenly distributed around the circumference of the cylinder at the lower end of the inner liner of this device. The inner liner and the outer cylinder form a meandering heat exchange space for liquid inlet and storage, which allows the heat exchange coil to be immersed in the shell-side medium for a longer time for heat exchange. Through longer contact time, the heat exchange efficiency is high.

[0035] The change in heat exchange coils reduces costs while maintaining similar heat exchange efficiency;

[0036] The addition of explosion-proof plates improves the safety of the tank.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-supply unit with a 3P high-efficiency tank and liquid storage function, characterized in that: It includes a cylindrical tank, which has an outer cylinder and an inner liner. Heat exchange coils and baffles are installed in the outer cylinder and the inner liner. The baffle is spirally wound between the outer cylinder and the inner liner. The two sides of the baffle are sealed to the outer cylinder and the inner liner respectively. The cavity between the outer cylinder and the inner liner is divided into a spiral refrigerant flow channel by the baffle. The heat exchange coil is spirally wound in the spiral refrigerant flow channel. The upper end of the heat exchange coil is set as the water outlet and the lower end of the heat exchange coil is set as the water inlet. The upper end of the tank is provided with a refrigerant inlet and a refrigerant outlet. The refrigerant inlet is connected to the upper part of the spiral refrigerant flow channel and the refrigerant outlet is connected to the inner cavity of the inner liner. The lower part of the inner liner is provided with a liquid guide hole that connects the spiral refrigerant flow channel to the inner cavity of the inner liner.

2. The dual-supply unit with a 3P high-efficiency tank and liquid storage function according to claim 1, characterized in that: The tank is equipped with an upper end cover and a lower end cover. The refrigerant inlet is located on the upper part of the outer cylinder wall, and the refrigerant outlet is located on the upper end cover.

3. The dual-supply unit with a 3P high-efficiency tank and liquid storage function according to claim 1 or 2, characterized in that: An outlet pipe is installed at the refrigerant outlet. The lower end of the outlet pipe extends into the lower part of the inner liner, while the upper end of the outlet pipe is located outside the upper cover.

4. The dual-supply unit with a 3P high-efficiency tank and liquid storage function according to claim 1, characterized in that: After the outer cylinder is welded, two explosion-proof discs are welded in the middle of the symmetrical tank.

5. The dual-supply unit with a 3P high-efficiency tank and liquid storage function according to claim 4, characterized in that: Two symmetrical through holes need to be drilled in the middle of the explosion-proof sheet.

6. The dual-supply unit with a 3P high-efficiency tank and liquid storage function according to claim 1, characterized in that: There are four connecting liquid guiding holes, each with a diameter of 16mm.

7. The dual-supply unit with a 3P high-efficiency tank and liquid storage function according to claim 1, characterized in that: The heat exchange coil is a finned tube.

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