Water treatment system integrating ice making and distilled water making functions

Abstract

The utility model provides a kind of integrated ice-making and distillation water function's water treatment system, it is related to the combined system technical field of heating and refrigeration, including double water source heat pump, ice-making pool, evaporation circulating pump, condensation circulating pump, distillation tank, MVR, heat exchanger and distilled water collection tank;Double water source heat pump, evaporation circulating pump, ice-making pool are connected by pipeline to form the first circulation loop;Double water source heat pump, condensation circulating pump, distillation tank are connected by pipeline to form the second circulation loop;MVR, distillation tank, heat exchanger, distilled water collection tank are sequentially connected by pipeline and form water treatment path, MVR also pass through auxiliary pipeline and distillation tank side wall top intercommunication.The utility model solves the problem that double water source heat pump in prior art cannot be fully utilized.

Description

Technical Field

[0001] This utility model relates to the technical field of combined heating and cooling systems, and in particular to a water treatment system that integrates ice making and distilled water production functions. Background Technology

[0002] In existing technologies, conventional dual-source heat pumps extract low-grade heat energy from the water source during heating, compress and heat it before supplying it, and simultaneously discharge some energy into river water, sewage, or well water. During cooling, heat is transferred to the water source, causing its temperature to rise by 8-12°C. In this process, some high-temperature waste heat is also left unused. Over time, this low-grade waste heat remains idle because it doesn't meet diverse energy needs, reducing resource utilization and causing additional energy losses.

[0003] Therefore, there is an urgent need to provide a water treatment system that can effectively utilize energy and resources. Utility Model Content

[0004] The purpose of this invention is to provide a water treatment system that integrates ice making and distilled water production functions, which solves the problem of insufficient resource utilization in existing dual-source heat pumps.

[0005] The technical solution of this utility model: A water treatment system integrating ice-making and distilled water production functions includes: a dual-source heat pump, an ice-making tank, an evaporation circulation pump, a condensation circulation pump, a distillation tank, a micro-vapor refrigerant (MVR), a heat exchanger, and a distilled water collection tank. The dual-source heat pump, the evaporation circulation pump, and the ice-making tank are connected by pipelines to form a first circulation loop. An ice maker is installed in the ice-making tank. Liquid in the dual-source heat pump passes sequentially through the evaporation circulation pump and the ice-making tank before returning to the dual-source heat pump. The dual-source heat pump, the condensation circulation pump, and the distillation tank are connected by pipelines to form a second circulation loop. Liquid in the dual-source heat pump passes sequentially through the distillation tank and the condensation circulation pump before returning to the dual-source heat pump. The MVR, the distillation tank, the heat exchanger, and the distilled water collection tank are sequentially connected by pipelines to form a water treatment path. The MVR is also connected to the top of the side wall of the distillation tank via an auxiliary pipeline.

[0006] Furthermore, the bottom of the distillation tank has a drain outlet, and the auxiliary pipe, the distillation tank, the drain outlet, the MVR, the heat exchanger, and the distilled water collection tank are connected by pipelines to form a third circulation loop.

[0007] Furthermore, a water inlet pipe is connected to the side wall of the distillation tank, and a water inlet valve is connected to the water inlet pipe.

[0008] Furthermore, an inlet pipe is connected between the heat exchanger and the water supply pipe, and an inlet valve is connected to the inlet pipe.

[0009] Furthermore, a water supply pipe is connected between the heat exchanger and the distillation tank.

[0010] Furthermore, a vacuum pump is connected to the upper part of the side wall of the distillation tank.

[0011] Furthermore, the upper part of the side wall of the heat exchanger has a raw liquid inlet.

[0012] Furthermore, the liquid flowing in the first and second circulation loops is ethylene glycol.

[0013] Furthermore, the ice maker is an ice pack or an ice mold.

[0014] Furthermore, a steam valve is connected to the auxiliary pipeline.

[0015] Based on the above technical features, the beneficial effects of this utility model are as follows: (1) The water treatment system provided by this utility model has a dual-source heat pump that can complete condensation on one side and evaporation on the other side, which can realize the dual utilization of cold and heat energy and effectively improve energy utilization efficiency.

[0016] (2) The water treatment system provided by this utility model uses the heat of the condensing side of the dual-source heat pump for the production of distilled water, while the cooling capacity of the evaporating side is used for ice making. The dual-source heat pump can produce two products on both sides, effectively improving economic benefits and realizing a dual profit model.

[0017] (3) The water treatment system provided by this utility model reduces energy consumption and environmental pollution by using low temperature distillation technology and vacuum environment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] In the diagram: 1. Dual-source heat pump; 2. Ice maker; 3. Evaporator circulation pump; 4. Condenser circulation pump; 5. Vacuum pump; 6. Water inlet valve; 7. Steam valve; 8. Distillation tank; 9. Drain outlet; 10. MVR; 11. Heat exchanger; 12. Water inlet valve; 13. Distilled water collection tank. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Example 1: Please refer to Figure 1 This utility model provides a water treatment system integrating ice making and distilled water production functions. This utility model can continuously produce distilled water with low energy consumption during refrigeration and ice making, relating to the technical field of energy-efficient combined utilization systems for refrigeration, ice making, and low-temperature heating and distillation of raw water. The system includes: a dual-source heat pump 1, an ice-making tank 2, an evaporation circulation pump 3, a condensation circulation pump 4, a distillation tank 8, an MVR 10, a heat exchanger 11, and a distilled water collection tank 13; the dual-source heat pump 1, the evaporation circulation pump 3, and the ice-making tank 2 are connected by pipelines to form a first circulation loop, and the ice-making tank 2 is equipped with... The liquid in the ice maker, which is a dual-source heat pump 1, passes through the evaporation circulation pump 3 and the ice-making tank 2 in sequence before returning to the dual-source heat pump 1. The dual-source heat pump 1, the condensation circulation pump 4, and the distillation tank 8 are connected by pipelines to form a second circulation loop. The liquid in the dual-source heat pump 1 passes through the distillation tank 8 and the condensation circulation pump 4 in sequence before returning to the dual-source heat pump 1. The MVR10, the distillation tank 8, the heat exchanger 11, and the distilled water collection tank 13 are connected by pipelines in sequence to form a water treatment path. The MVR10 is also connected to the top of the side wall of the distillation tank 8 through an auxiliary pipe, and a steam valve 7 is connected to the auxiliary pipe.

[0022] It should be noted that conventional dual-source heat pumps 1 discharge a portion of their energy into river water, sewage, or well water while providing heating or cooling. The energy circulation system provided by this invention can more fully utilize the energy on both sides of the dual-source heat pump 1, improving energy efficiency and reducing losses. The first circulation loop is a condensation loop, which utilizes low-temperature distillation technology. By controlling the evaporation temperature of the raw water to approximately 35°C, the raw water is heated and distilled after the water treatment system is activated, initiating evaporation. The steam condenses into liquid water and is discharged into the distillation water collection tank 13. The second circulation loop is an evaporation loop, and the water treatment path is formed by sequentially connecting the distillation tank 8, MVR 10, heat exchanger 11, and distillation water collection tank 13 through pipelines. By recycling the heat absorbed in the distillation loop, ice products can be produced, thus achieving dual utilization of hot and cold energy and effectively improving energy efficiency. This invention solves the problem of insufficient resource utilization in existing dual-source heat pumps 1.

[0023] It should be noted that the water treatment system provided by this utility model is equipped with an MVR10, which, in the field of engineering and energy conservation, is specifically a mechanical vapor recompressor. Specifically, the MVR10 is connected to the distillation tank 8 via a pipeline and is used to perform secondary heating and pressurization treatment on the steam generated by the distillation tank 8, thereby improving the thermal energy utilization rate of the steam.

[0024] It should be noted that the temperature of the liquid flowing from the dual-source heat pump 1 to the distillation tank 8 is preferably 37 degrees Celsius; the temperature of the liquid flowing from the distillation tank 8 to the dual-source heat pump 1 is preferably 32 degrees Celsius.

[0025] Optionally, the temperature of the liquid flowing from the dual-source heat pump 1 to the ice-making tank 2 is preferably -15 degrees Celsius; the temperature of the liquid flowing from the ice-making tank 2 to the dual-source heat pump 1 is preferably -10 degrees Celsius.

[0026] It should be noted that the distillation tank 8 has a drain outlet 9 at its bottom. The auxiliary pipe, the distillation tank 8, the drain outlet 9, the MVR 10, the heat exchanger 11, and the distilled water collection tank 13 are connected by pipelines to form a third circulation loop. This third circulation loop is a loop for reusing condensation waste heat to produce distilled water. In this embodiment, the raw water is tap water, groundwater, surface water, seawater, or industrial wastewater. This utility model embodiment solves the problem that low-temperature waste heat resources cannot be fully utilized when conventional heat pumps and air conditioning units are used for refrigeration and ice making in the prior art, and at the same time improves the energy efficiency of heat pump units in producing distilled water by more than 50%.

[0027] Furthermore, a water supply pipe is connected to the side wall of the distillation tank 8, and a water supply valve 6 is connected to the water supply pipe. The water supply pipe is used to add liquid into the distillation tank 8, and the water supply valve 6 is used to control the flow rate of water and to open and close the valve.

[0028] Furthermore, a water inlet pipe is connected between the heat exchanger 11 and the water supply pipe, and a water inlet valve 12 is connected to the water inlet pipe. The upper part of the side wall of the heat exchanger 11 has a raw liquid inlet. Before the equipment is put into operation, raw water is added through the water inlet pipe and the water inlet valve 12 to the raw liquid inlet.

[0029] Furthermore, a water supply pipe is connected between the heat exchanger 11 and the distillation tank 8, which is used to transport the liquid in the heat exchanger 11 to the distillation tank 8. During use, the liquid in the heat exchanger 11 needs to be heated to preheat it, which can further improve the distillation efficiency. The steam in the heat exchanger 11 condenses into liquid water after condensation and is discharged into the distilled water collection tank 13 for subsequent use or sale.

[0030] It should be noted that before the system is run for the first time, water should be added from the upper water inlet valve 6; after the system is running, water should be added from the lower water inlet valve 6.

[0031] Furthermore, a vacuum pump 5 is connected to the upper side wall of the distillation tank 8; the ice maker is an ice pack or ice mold; the liquid flowing in the first and second circulation loops is ethylene glycol. Ethylene glycol solution has good thermal conductivity and low-temperature antifreeze properties, ensuring stable system operation under different operating conditions. Specifically, on one side of the evaporation loop of the dual-source water heat pump 1, an ethylene glycol solution with a temperature of -15℃ is output. An ice-making pool 2 is connected to the dual-source water heat pump 1 to receive the -15℃ ethylene glycol solution. After entering the ice-making pool 2, the ethylene glycol solution exchanges heat with the water in the pool, freezing the water in the ice pack or ice mold into ice. During the heat exchange process, the heat released by the ice pack or ice mold is absorbed by the ethylene glycol solution, raising its temperature to -10℃. The heated ethylene glycol solution then returns to the dual-source water heat pump 1 through a pipe, completing one ice-making cycle. It should be noted that, in order to ensure the continuous flow of ethylene glycol solution on one side of the evaporation circuit, an evaporation circulation pump 3 is provided. Specifically, the evaporation circulation pump 3 is an evaporation-side ethylene glycol circulation pump, which is located between the ice-making tank 2 and the dual-source water heat pump 1, and is used to drive the circulation of ethylene glycol solution.

[0032] Optionally, the ice-making tank 2 is provided with a flow channel to further improve the heat exchange effect between the ethylene glycol solution and water.

[0033] It should be noted that when vacuum pump 5 is drawing a vacuum, water valve 6, steam valve 7, and drain port 9 must be closed to keep distillation tank 8 in a sealed state.

[0034] Furthermore, the condenser circuit of the dual-source heat pump 1 outputs an ethylene glycol solution at a temperature of 37°C. Specifically, the distillation tank 8 is connected to the condenser circuit of the dual-source heat pump 1 to receive the ethylene glycol solution at 37°C. After entering the distillation tank 8, the ethylene glycol solution heats and evaporates the original liquid. During heating, the water in the original liquid gradually evaporates into water vapor, while the concentrated waste liquid remains at the bottom of the distillation tank 8. It should be noted that, to reduce energy consumption and improve distillation efficiency, a vacuum pump 5 is provided. The vacuum pump 5 is connected to the distillation tank 8 via a pipe and is used to create a vacuum inside the distillation tank 8, controlling the evaporation temperature of the water to be maintained at approximately 35°C. The use of the vacuum pump 5 not only lowers the boiling point of water but also reduces energy consumption and improves distillation efficiency. Specifically, a condenser circulation pump 4 is also provided. This condenser circulation pump 4 is specifically a condenser-side ethylene glycol circulation pump, located between the distillation tank 8 and the dual-source heat pump 1. It is used to drive the circulation of the ethylene glycol solution on the condenser circuit side, ensuring the continuous operation of the distillation process.

[0035] Furthermore, during use, to ensure the efficient operation of the system, precise control of each key parameter is required. For example, the working pressure of the vacuum pump 5 needs to be adjusted according to the properties of the liquid in the distillation tank 8 to ensure that the evaporation temperature of the water is maintained at around 35°C; the heating and pressurization parameters of the MVR10 need to be optimized according to the steam flow rate and the heating requirements of the heat exchanger 11 to improve the thermal energy utilization rate; the circulation flow rate of the ethylene glycol solution needs to be adjusted according to the heat exchange requirements of the ice-making tank 2 and the distillation tank 8 to ensure the uniformity and stability of energy transfer.

[0036] Furthermore, the bottom of the distillation tank 8 has a drain port 9, which is used to automatically discharge the concentrated waste liquid generated during the distillation process. The concentrated waste liquid is discharged into a collection tank through the drain port 9 for unified treatment. Optionally, the drain port 9 is connected to a drain valve. The drain valve is threadedly connected to the distillation tank 8 and a sealing ring is provided on the outside of the drain valve. The threaded connection facilitates the disassembly and maintenance of the drain valve, and the sealing ring can effectively prevent distilled water leakage, further ensuring the stable operation of the system.

[0037] It should be noted that the ethylene glycol solution in the pipeline does not mix with the liquids in the dual-source water heat pump 1, ice-making tank 2, and distillation tank 8.

[0038] It should be noted that in the water treatment system provided by this utility model, during ice making, the -15℃ ethylene glycol solution output from the evaporation circuit side of the dual-source heat pump 1 enters the ice-making tank 2, where it exchanges heat with water to freeze the water in ice packs or ice molds into ice blocks. The heat released by the ice blocks raises the temperature of the ethylene glycol to -10℃, after which it returns to the dual-source heat pump 1, completing the ice-making cycle. The 37℃ ethylene glycol solution output from the condensation circuit side of the dual-source heat pump 1 enters the distillation tank 8, where the original liquid is heated and evaporated to produce water vapor. After this vapor is generated, the ethylene glycol solution returns to the dual-source heat pump 1. In the distillation of water, firstly, before starting the system, open the water inlet valve 6 on the water inlet pipe to allow raw water to enter the distillation tank 8 and reach a certain liquid level; then close the water inlet valve 6 and the steam valve 7; turn on the vacuum pump 5 to create a vacuum in the distillation tank 8, controlling the evaporation temperature of the water to be maintained at around 35℃; after the system starts, ethylene glycol solution at 37℃ is sent out from the condensation circuit side of the distillation tank 8, and the distillation tank 8 heats and evaporates the liquid. Open the steam valve 7, and water vapor enters the MVR 10 for secondary heating and pressurization. Water vapor at around 60℃ enters the distillation tank 8 for secondary heating. Then, after passing through the distillation tank 8, the steam condenses into liquid water. Open the water inlet valve 12 to allow the liquid water to exchange heat with the raw water again, and then undergo secondary condensation through the heat exchanger 11. At the same time, the raw water is preheated once before entering the distillation tank 8 to improve distillation efficiency; finally, the distilled water enters the distilled water collection tank 13, and the concentrated waste liquid in the distillation tank 8 is discharged from the drain outlet 9. The entire process operates under a fully enclosed negative pressure state, ensuring the stability and safety of the system.

[0039] Example 2: Based on the embodiments, a water treatment system integrating ice making and distilled water production functions is provided. Specifically, a filtration device is also provided, located between MVR10 and heat exchanger 11. The filtration device is filled with a porous ceramic filter element, and the surface of the porous ceramic filter element is coated with a hydrophobic coating. In detail, the porous ceramic filter element can effectively remove impurities from water vapor, thereby ensuring the purity of distilled water.

[0040] The water treatment system provided by this utility model has multiple heat exchange fins arranged in a ring along the inner wall of the distillation tank 8, and coated with a high-temperature resistant coating. The heat exchange fins can increase the contact area between the liquid and the inner wall of the distillation tank 8, thereby improving the heat exchange efficiency.

[0041] It should be noted that the remaining structures are existing technologies and will not be discussed further here.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

Claims

1. A water treatment system integrating ice-making and distilled water production functions, characterized in that, include: The system includes a dual-source heat pump (1), an ice-making tank (2), an evaporation circulation pump (3), a condensation circulation pump (4), a distillation tank (8), an MVR (10), a heat exchanger (11), and a distilled water collection tank (13). The dual-source heat pump (1), the evaporation circulation pump (3), and the ice-making tank (2) are connected by pipelines to form a first circulation loop. An ice maker is installed in the ice-making tank (2). The liquid in the dual-source heat pump (1) passes through the evaporation circulation pump (3) and the ice-making tank (2) in sequence before returning to the dual-source heat pump (1). The dual-source heat pump (1), the condenser circulation pump (4), and the distillation tank (8) are connected by pipelines to form a second circulation loop. The liquid in the dual-source heat pump (1) passes through the distillation tank (8) and the condenser circulation pump (4) in sequence and then returns to the dual-source heat pump (1). The MVR (10), the distillation tank (8), the heat exchanger (11), and the distilled water collection tank (13) are connected by pipelines in sequence to form a water treatment path. The MVR (10) is also connected to the top of the side wall of the distillation tank (8) through an auxiliary pipeline.

2. The system according to claim 1, characterized in that, The distillation tank (8) has a drain outlet (9) at the bottom. The auxiliary pipe, the distillation tank (8), the drain outlet (9), the MVR (10), the heat exchanger (11), and the distilled water collection tank (13) are connected by pipelines to form a third circulation loop.

3. The system according to claim 1, characterized in that, The side wall of the distillation tank (8) is connected to a water inlet pipe, and a water inlet valve (6) is connected to the water inlet pipe.

4. The system according to claim 3, characterized in that, A water inlet pipe is connected between the heat exchanger (11) and the water supply pipe, and a water inlet valve (12) is connected to the water inlet pipe.

5. The system according to claim 1, characterized in that, A water supply pipe is connected between the heat exchanger (11) and the distillation tank (8).

6. The system according to claim 1, characterized in that, A vacuum pump (5) is connected to the upper side wall of the distillation tank (8).

7. The system according to claim 1, characterized in that, The heat exchanger (11) has a raw liquid inlet on the upper part of its side wall.

8. The system according to claim 1, characterized in that, The liquid flowing in the first and second circulation loops is ethylene glycol.

9. The system according to claim 1, characterized in that, The ice maker is an ice pack or ice mold.

10. The system according to claim 1, characterized in that, A steam valve (7) is connected to the auxiliary pipeline.

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