A magnetic suspension centrifugal heat pump heat recovery system applied to tea beverage production

Abstract

The application discloses a kind of applied to the magnetic suspension centrifugal heat pump heat recovery system of tea beverage production, including hot water tank, first temperature rising unit, extraction hot side, first temperature reducing unit, dispensing water side, heat recovery pipeline, high-temperature heat pump unit connected in turn, high-temperature heat pump unit has high-temperature heat absorption side and high-temperature heat release side and high-temperature magnetic suspension centrifugal compressor, the hot water tank is equipped with a water outlet pipeline, the water outlet pipeline is connected between the first temperature rising unit and the extraction hot side after passing through the second heat exchanger.The application is extracted by heat recovery pipeline and the hot water after process, the waste heat of hot water is recycled using high-temperature heat pump unit, and the heat energy generated by work is transmitted to the front end of extraction process by high-temperature magnetic suspension centrifugal compressor work, while the water of heat recovery pipeline is cooled or cooled for dispensing process, realize heat energy recycling, greatly improve comprehensive energy utilization.

Description

Technical Field

[0001] This invention relates to the technical field of tea beverage production systems, and in particular to a magnetic levitation centrifugal heat pump heat recovery system applied to the production of tea beverages. Background Technology

[0002] In the production of tea beverages, a large amount of steam is required to heat the production water for use in heat-consuming production processes, such as the extraction and sugar melting processes (water temperature required to be 80-100℃). At the same time, there are also process units that require cooling, such as the blending process (water temperature required to be 15-20℃). The cold water consumed is generally provided by equipment such as refrigeration units.

[0003] In existing tea beverage production, water needs to be heated to 80℃-100℃ before entering the extraction process. After extraction, the hot water temperature remains above 70℃-80℃, meaning it retains a significant amount of residual heat. This residual heat then needs to be cooled using a cooling device or by mixing with ice water to lower the temperature to 15℃-20℃ before entering the blending tank for the blending process. Therefore, in the current tea beverage production process, a large amount of residual heat is wasted during production, and a large amount of steam is required to heat the water for the extraction process, as well as additional cooling towers to cool the hot water or to connect large quantities of ice water for the blending process. Overall, the energy efficiency is low. Summary of the Invention

[0004] To address the issues of wasted waste heat and low overall energy utilization in the production of tea beverages, this invention provides a magnetic levitation centrifugal heat pump heat recovery system for tea beverage production. The system connects to hot water from the extraction process via heat recovery pipelines, utilizes a high-temperature heat pump unit to recover the waste heat from the hot water, and then transfers the waste heat and the heat generated by the work done by a high-temperature magnetic levitation centrifugal compressor to the front end of the extraction process. Simultaneously, the water in the heat recovery pipelines is cooled or de-cooled for use in the blending process, achieving heat energy recovery and reuse, thus significantly improving the overall energy utilization rate.

[0005] To achieve the above objectives, the present invention employs the following technical solution: a magnetic levitation centrifugal heat pump heat recovery system for tea beverage production, comprising a hot water tank, a first heating unit, an extraction heat side, a first cooling unit, and a blending water side connected in sequence, and further comprising:

[0006] The heat recovery pipeline has one end connected to the hot water before cooling from the first cooling unit. After passing through the first heat exchanger, the hot water flows back to the first cooling unit, mixes with the water in the first cooling unit, cools down, and then flows to the water distribution side.

[0007] A high-temperature heat pump unit has a high-temperature heat absorption side, a high-temperature heat release side, and a high-temperature magnetic levitation centrifugal compressor. The high-temperature heat absorption side absorbs heat in the first heat exchanger and releases heat in the second heat exchanger after the high-temperature magnetic levitation centrifugal compressor performs work.

[0008] The hot water tank is provided with a water outlet pipe, which is connected between the first heating unit and the extraction heat side after passing through the second heat exchanger.

[0009] As a further improvement of the present invention: the high-temperature heat absorption side has a first circulation pipeline, and the refrigerant in the first circulation pipeline exchanges heat with the hot water flowing through it when passing through the first heat exchanger;

[0010] The high-temperature heat release side has a second circulation pipeline, which flows through the second heat exchanger;

[0011] When the water in the outlet pipe flows through the second heat exchanger, it exchanges heat with the refrigerant in the second circulation pipe. After the heat exchange, it mixes with the hot water heated by the first heating unit and supplies hot water to the extraction heating side.

[0012] As a further improvement of the present invention, it also includes a second heating unit, a sugar melting heat side, a second cooling unit, and a preparation water side connected in sequence from a hot water tank;

[0013] After passing through the second heat exchanger, the water outlet pipe splits into two paths. One path connects to the water outlet of the first heating unit and mixes with the hot water heated by the first heating unit to supply hot water to the extraction heat side. The other path connects to the water outlet of the second heating unit and mixes with the hot water heated by the second heating unit to supply hot water to the sugar melting heat side.

[0014] As a further improvement of the present invention, it also includes a low-temperature heat pump unit;

[0015] The hot water in the heat recovery pipeline enters the third heat exchanger after passing through the first heat exchanger, and then exchanges heat again in the third heat exchanger before flowing back to the first cooling unit.

[0016] The low-temperature heat pump unit has a low-temperature heat absorption side, a low-temperature heat release side, and a low-temperature magnetic levitation centrifugal compressor. The low-temperature heat absorption side absorbs heat in the third heat exchanger and releases heat in the fourth heat exchanger after the low-temperature magnetic levitation centrifugal compressor performs work.

[0017] The hot water tank is equipped with a water inlet pipe, and the water inlet pipe flows through the fourth heat exchanger to absorb heat.

[0018] As a further improvement of the present invention: the low-temperature heat absorption side has a third circulation pipeline, and the refrigerant in the third circulation pipeline exchanges heat with the hot water flowing through it when passing through the third heat exchanger;

[0019] The low-temperature heat release side has a fourth circulation pipeline, which flows through the fourth heat exchanger;

[0020] When the water in the inlet pipe flows through the fourth heat exchanger, it exchanges heat with the refrigerant in the fourth circulation pipe, and then enters the hot water tank.

[0021] As a further improvement of the present invention: a third heating unit is provided on the water inlet pipe, and the water inlet pipe is divided into two paths, which flow through the fourth heat exchanger and the third heating unit respectively and then mix before entering the hot water tank.

[0022] As a further improvement of the present invention: a separator is provided between the hot side for extraction and the water side for preparation.

[0023] As a further improvement of the present invention: the water in the hot water tank enters the first temperature rise unit and is heated to 80℃-100℃ by the first heating unit, and then enters the extraction heat side for heating. After the hot water is heated by the extraction heat side, it enters the first cooling unit, and part of the hot water enters the heat recovery pipeline.

[0024] As a further improvement of the present invention: the first heating unit, the second heating unit and the third heating unit use one or more of the following methods for heating water: steam heating, electric heating or hot water circulation heat exchange.

[0025] As a further improvement of the present invention: the first cooling unit and the second cooling unit are respectively provided with cooling towers and connected to chilled water pipes.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] This invention introduces hot water from the extraction process through a heat recovery pipeline, uses a high-temperature heat pump unit to recover the waste heat of the hot water, and transfers the waste heat and the heat energy generated by the work done by a high-temperature magnetic levitation centrifugal compressor to the front end of the extraction process. At the same time, the water in the heat recovery pipeline is cooled or de-cooled for use in the process, realizing the recovery and reuse of heat energy and greatly improving the overall energy utilization rate.

[0028] This invention utilizes a low-temperature heat pump unit to perform secondary heat recovery of waste heat from the heat recovery pipeline. By employing a magnetic levitation centrifugal compressor to perform work, energy transfer is achieved. The recovered waste heat is used to heat the water in the inlet pipeline of the hot water tank. Compared to the traditional method of using steam heating in tea beverage production, this invention consumes only a portion of electricity and a small amount of steam throughout the process, saving on the losses of cooling towers and ice water pipelines, and reducing the equipment and operating costs of the entire system. Attached Figure Description

[0029] To more clearly illustrate the technical solution, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of an embodiment of the present invention.

[0031] Explanation of markings in the diagram:

[0032] 100: Hot water tank; 110: Water outlet pipe; 200: First heating unit; 300: Extraction heating side; 400: First cooling unit; 500: Blending water side; 600: Second heating unit; 700: Sugar melting heating side; 800: Second cooling unit; 900: Blending water side.

[0033] 10: First heat exchanger, 20: Second heat exchanger, 30: Third heat exchanger, 40: First heat exchanger, 50: High-temperature heat pump unit, 51: High-temperature heat absorption side, 52: High-temperature heat release side, 60: Low-temperature heat pump unit, 61: Low-temperature heat absorption side, 62: Low-temperature heat release side. Detailed Implementation

[0034] In order to clearly and completely understand the technical solution, the present invention will be further described in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0036] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0037] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0038] like Figure 1 As shown, an embodiment of the present invention provides a magnetic levitation centrifugal heat pump heat recovery system for tea beverage production, comprising a hot water tank 100, a first heating unit 200, an extraction heat side 300, a first cooling unit 400, and a blending water side 500 connected in sequence, and further comprising:

[0039] The heat recovery pipeline has one end connected to the hot water before cooling from the first cooling unit 400. After passing through the first heat exchanger 10, the hot water flows back to the first cooling unit 400, mixes with the water in the first cooling unit 400, cools down, and then flows to the water distribution side 500.

[0040] The high-temperature heat pump unit 50 has a high-temperature heat absorption side 51, a high-temperature heat release side 52, and a high-temperature magnetic levitation centrifugal compressor. The high-temperature heat absorption side 51 absorbs heat in the first heat exchanger 10 and releases heat in the second heat exchanger 20 after the high-temperature magnetic levitation centrifugal compressor performs work.

[0041] The hot water tank 100 is provided with a water outlet pipe 110, which is connected between the first heating unit 200 and the extraction heat side 300 after passing through the second heat exchanger 20.

[0042] In the production of tea beverages, the extraction process generally involves a short extraction time, resulting in limited heat exchange time between hot water and tea leaves and a small temperature drop. Even when using 95°C hot water for extraction, the extracted water temperature remains around 80°C-85°C. At this point, the hot water still possesses significant residual heat, which needs to be cooled by a cooling unit or mixed with ice water to lower the temperature to around 18°C ​​to meet the requirements of the blending process, thus preparing it for use in the blending tank. In this embodiment, the hot water from the extraction process is connected via a heat recovery pipeline. A high-temperature heat pump unit 50 recovers the residual heat from the hot water, and a high-temperature magnetic levitation centrifugal compressor performs work, transferring the residual heat and the heat generated during work to the front end of the extraction process. Simultaneously, the water in the heat recovery pipeline is cooled or de-cooled for use in the blending process, achieving heat energy recovery and reuse, significantly improving the overall energy utilization rate.

[0043] Specifically, the high-temperature heat-absorbing side 51 of the high-temperature heat pump unit 50 recovers waste heat from the hot water in the heat recovery pipeline through the first heat exchanger 10. Taking the hot water tank 100 supplying 600 tons / day of water to the extraction heat side 300 as an example, the water (45°C) from the hot water tank 100 is heated to 95°C by the first heating unit 200. After being heated by the extraction heat side 300, it is cooled to 80°C and enters the first cooling unit 400. At this time, most of the 80°C hot water is drawn into the heat recovery pipeline and absorbed by the high-temperature heat-absorbing side 51 in the first heat exchanger 10. After being absorbed by the first heat exchanger 10, the hot water in the heat recovery pipeline is cooled to 53°C. The refrigerant temperature of the high-temperature heat-absorbing side 51 can be heated from 43°C to 53°C (flow rate of 84m³ / h). 3 The heat absorption is 975kW / h. Combined with the work done by the high-temperature magnetic levitation centrifugal compressor (heating COP = 4.9), the heat is released in the second heat exchanger 20 through the high-temperature heat release side 52. The refrigerant in the high-temperature heat release side 52 cools down from 83℃ to 73℃ (flow rate is 105m³ / h). 3 / h), the heat release of the high-temperature heat release side 52 is 1225kW. At the same time, the water outlet pipe 110 of the hot water tank 100 passes through the second heat exchanger 20 and absorbs heat. The water temperature can be heated from 45℃ to 80℃. The water outlet pipe 110 mixes the 80℃ high-temperature hot water with the high-temperature hot water from the first heating unit 200 and then supplies hot water to the extraction heat side 300.

[0044] This embodiment can recover waste heat from the hot water after the extraction process and reuse the waste heat before the extraction process, significantly reducing the steam 210 consumption of the first heating unit 200, and also significantly saving the work done by the cooling tower 410 and the loss of chilled water 420 in the first cooling unit 400. In some embodiments, in addition to saving steam consumption in the heating unit, the installation of a cooling tower and / or chilled water can be eliminated (detailed description of the further addition of a low-temperature heat pump unit to recover waste heat in the optional embodiments below), reducing the equipment and operating costs of the entire system.

[0045] It should be noted that this invention does not impose any restrictions on the composition and operating principle of the high-temperature / low-temperature heat pump unit. Technical personnel can set it themselves according to actual usage requirements. It generally consists of a magnetic levitation centrifugal compressor, evaporator, condenser, throttling device, and control system. The operating principle is to compress the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure gas through the compressor, condense and release heat in the condenser (equivalent to the high-temperature / low-temperature heat release side of this invention), and then reduce the pressure through the throttling device, and absorb heat and evaporate in the evaporator (equivalent to the high-temperature / low-temperature heat absorption side of this invention) to achieve heat transfer. This invention will not be described in detail here.

[0046] To better understand the refrigerant heat exchange on the high-temperature heat absorption side and the high-temperature heat release side, in one optional embodiment:

[0047] Based on the above embodiments, the high-temperature heat absorption side 51 has a first circulation pipeline, in which the refrigerant in the first circulation pipeline exchanges heat with the hot water flowing through the first heat exchanger 10.

[0048] The high-temperature heat release side 52 has a second circulation pipeline, which flows through the second heat exchanger 20;

[0049] When the water in the outlet pipe 110 flows through the second heat exchanger 20, it exchanges heat with the refrigerant in the second circulation pipe. After the heat exchange, it mixes with the hot water heated by the first heating unit 200 and supplies hot water to the extraction heating side 300.

[0050] In this embodiment, heat exchange occurs in the first heat exchanger 10 and the second heat exchanger 20 via the first and second circulation pipelines, respectively. The waste heat of the hot water in the heat recovery pipeline is transferred to the outlet pipeline 110 of the hot water tank 100 via the high-temperature heat pump unit 50. The heat energy is then transferred to the front end of the extraction heat side 300 via the outlet pipeline 110. At the same time, the water that has absorbed heat in the heat recovery pipeline flows back to the first cooling unit 400. After mixing and cooling with the water in the first cooling unit 400, the water is supplied to the distribution water side 500. The high-temperature heat pump unit 50, in conjunction with the heat exchanger, heats the water in the hot water tank 100 to above 80°C. The steam from the first heating unit 200 is used to assist in heating to 90°C before supplying water to the extraction heat side (extraction equipment). The entire process consumes some electricity and a small amount of steam, and the total cost is less than the cost of steam.

[0051] Since extraction uses hot water to extract the effective components of tea leaves, such as tea polyphenols, caffeine, amino acids, and aroma substances, to form tea juice, this process involves the transfer of the effective components of tea leaves from the solid phase to the aqueous phase. After the extraction process, the water is usually separated before entering the blending water side. In an optional embodiment, a separator 510 is provided between the hot extraction side 300 and the blending water side 500.

[0052] In the production of some tea beverages, there is also the heat requirement for sugar melting process. After extraction, it needs to be blended, and blending may involve the sugar melting process. The sugar melting process is a key step in dissolving sugar (such as sucrose, glucose, high fructose syrup, etc.) into syrup. In order to meet the heat requirements of different processes, the present invention also provides another embodiment, which includes: a second heating unit 600, a sugar melting heat side 700, a second cooling unit 800, and a blending water side 900 connected in sequence from the hot water tank 100.

[0053] The water outlet pipe 110 splits into two paths after passing through the second heat exchanger 20. One path connects to the water outlet of the first heating unit 200 and mixes with the hot water heated by the first heating unit 200 to supply hot water to the extraction heating side 300. The other path connects to the water outlet of the second heating unit 600 and mixes with the hot water heated by the second heating unit 600 to supply hot water to the sugar melting heating side 700.

[0054] In this embodiment, the outlet water pipeline absorbs the waste heat of the hot water from the heat recovery pipeline through a high-temperature heat pump unit. In the second heat exchanger, the water from the hot water tank, initially at 45°C, is heated to 80°C. Then, it is split into two streams, mixed with the high-temperature hot water from the first heating unit 200 and the second heating unit 600, respectively, and supplied to the extraction heat side and the sugar melting heat side. Since the heat demand on the sugar melting side is relatively large, the hot water above 80°C typically cools to around 50°C after the sugar melting process. In this embodiment, the second cooling unit directly cools the 50°C water or mixes it with ice water, lowering the temperature to 18°C ​​before supplying it to the mixing water side 900.

[0055] It should be noted that the water side 900 in this embodiment and the water side 500 in the above embodiment can refer to the same water side (i.e., the same mixing barrel or mixing water container), or they can be different water sides. In order to clearly show the difference between the water used in the extraction process and the water used in the sugar melting process of tea making, different reference numerals are used.

[0056] To better understand the concept of the present invention, in an optional embodiment, based on any of the above embodiments, a low-temperature heat pump unit 60 is also included;

[0057] The hot water in the heat recovery pipeline enters the third heat exchanger 30 after passing through the first heat exchanger 10, and then exchanges heat again in the third heat exchanger 30 before flowing back to the first cooling unit.

[0058] The low-temperature heat pump unit 60 has a low-temperature heat absorption side 61, a low-temperature heat release side 62, and a low-temperature magnetic levitation centrifugal compressor. The low-temperature heat absorption side 61 absorbs heat in the third heat exchanger 30, and after the low-temperature magnetic levitation centrifugal compressor does work, the low-temperature heat release side 62 releases heat in the fourth heat exchanger 40.

[0059] The hot water tank 100 is provided with a water inlet pipe 120, and the water inlet pipe 120 flows through the fourth heat exchanger 40 to absorb heat.

[0060] In this embodiment, the hot water in the heat recovery pipeline still has residual heat after passing through the first heat exchanger 10. Typically, the hot water at 80°C is cooled to about 50°C after being absorbed by the high-temperature heat-absorbing side 51 in the first heat exchanger 10. At this time, the 50°C hot water enters the third heat exchanger 30 and is absorbed by the low-temperature heat-absorbing side 61. After being absorbed by the low-temperature heat-absorbing side 61, the hot water can be cooled to below 20°C and then flows back to the first cooling unit 400.

[0061] Specifically, the low-temperature heat-absorbing side 61 of the low-temperature heat pump unit 60 recovers waste heat from the hot water in the heat recovery pipeline through the third heat exchanger 30. Taking the water supply of the heat recovery pipeline as 600 tons / day and the water inlet pipeline of the hot water tank as 720 tons / day (600 tons / day on the extraction process side + 120 tons / day on the sugar melting process side) as an example, the hot water in the heat recovery pipeline is cooled to 53°C after passing through the first heat exchanger 10, flows through the third heat exchanger 30 and is absorbed by the low-temperature heat-absorbing side 61, cooled to 19°C, and then flows back to the first cooling unit 400. Meanwhile, the refrigerant temperature on the low-temperature heat-absorbing side 61 can be heated from 17°C to 27°C (flow rate of 68m³ / h). 3 The heat absorption is 797kW, which, combined with the work done by the low-temperature magnetic levitation centrifugal compressor (heating COP = 6.4), releases heat in the fourth heat exchanger 40 through the low-temperature heat release side 62. The refrigerant in the low-temperature heat release side 62 cools down from 47℃ to 37℃ (flow rate 81m³ / h). 3 / h), the heat release of the low-temperature heat release side 62 is 945kW. At the same time, the water inlet pipe 120 of the hot water tank 100 passes through the fourth heat exchanger 40 and absorbs heat. The external RO water or pure water or distilled water at 18°C ​​flows from the water inlet pipe through the fourth heat exchanger 40, and the water temperature can be heated from 18°C ​​to 45°C by absorbing heat, and then flows to the hot water tank 100.

[0062] This embodiment can recover the waste heat of the hot water after the extraction process and use the waste heat for the water in the hot water tank, which greatly reduces the heating consumption of the water in the hot water tank. At the same time, the water that flows back to the first cooling unit through the heat recovery pipeline can be fully cooled down to 18°C, which is suitable for the blending process. In this embodiment, the cooling tower and ice water cooling configuration of the first cooling unit can be eliminated, which effectively reduces the system's production cost and operation and management cost.

[0063] To ensure the required water temperature (45℃) in the hot water tank, in some embodiments, when the residual heat from the heat recovery pipeline is insufficient, a third heating unit 130 is provided on the inlet pipe 120. The inlet pipe is divided into two paths, flowing through the fourth heat exchanger 40 and the third heating unit 130 respectively before mixing and entering the hot water tank 100. In these embodiments, the third heating unit 130 is turned on and off according to usage requirements. When the water temperature in the hot water tank 100 is lower than required, the inlet pipe of the third heating unit is opened by a solenoid valve, and the steam from the third heating unit heats the water, effectively ensuring the required water temperature in the hot water tank.

[0064] To better understand the refrigerant heat exchange on the low-temperature heat absorption side and the low-temperature heat release side, in one optional embodiment:

[0065] Based on the above embodiments, the low-temperature heat absorption side 61 has a third circulation pipeline, and the refrigerant in the third circulation pipeline exchanges heat with the hot water flowing through it when passing through the third heat exchanger 30.

[0066] The low-temperature heat release side 62 has a fourth circulation pipeline, which flows through the fourth heat exchanger 40;

[0067] When the water in the inlet pipe 120 flows through the fourth heat exchanger 40, it exchanges heat with the refrigerant in the fourth circulation pipe and then enters the hot water tank 100.

[0068] In this embodiment, heat exchange occurs in the third heat exchanger 30 and the fourth heat exchanger 40 via the third and fourth circulation pipelines, respectively. The waste heat of the hot water in the heat recovery pipeline is transferred to the inlet pipeline 120 and the hot water tank 100 via the low-temperature heat pump unit 60. Simultaneously, the water that has absorbed heat in the heat recovery pipeline flows back to the first cooling unit 400, where it mixes with the water and is cooled before being supplied to the distribution water side 500. The low-temperature heat pump unit 60, in conjunction with the heat exchanger, heats the water in the inlet pipeline to 45°C before it enters the hot water tank 100, while the water flowing back to the first cooling unit in the heat recovery pipeline is cooled to 18°C. This effectively reduces the circulation of cooling tower and chilled water, consuming only a portion of electrical energy and a small amount of steam throughout the process, resulting in a total cost less than the cost of steam.

[0069] In an optional embodiment, the water in the hot water tank enters the first temperature rise unit and is heated to 80°C-100°C by the first heating unit before entering the extraction heat side for heating. After being heated by the extraction heat side, the hot water enters the first cooling unit, and a portion of the hot water enters the heat recovery pipeline.

[0070] In an optional embodiment, the first heating unit 200, the second heating unit 600, and the third heating unit 130 use one or more combinations of steam heating, electric heating, or hot water circulation heat exchange to heat the water.

[0071] In an optional embodiment, the first cooling unit 400 and the second cooling unit are respectively provided with a cooling tower 410 and connected to a chilled water 420 pipeline.

[0072] The above disclosures are merely one or more preferred embodiments of the present invention, intended to help understand the inventive concept of the technical solution, and are not intended to limit the present invention in any other way. Any other equivalent or conventional substitution schemes made by those skilled in the art based on the features defined by the present invention shall still fall within the scope of the present invention.

Claims

1. A magnetic levitation centrifugal heat pump heat recovery system for tea beverage production, comprising a hot water tank, a first heating unit, an extraction heat side, a first cooling unit, and a blending water side connected in sequence, characterized in that, Also includes: The heat recovery pipeline has one end connected to the hot water before cooling from the first cooling unit. After passing through the first heat exchanger, the hot water flows back to the first cooling unit, mixes with the water in the first cooling unit, cools down, and then flows to the water distribution side. A high-temperature heat pump unit has a high-temperature heat absorption side, a high-temperature heat release side, and a high-temperature magnetic levitation centrifugal compressor. The high-temperature heat absorption side absorbs heat in the first heat exchanger and releases heat in the second heat exchanger after the high-temperature magnetic levitation centrifugal compressor performs work. The hot water tank is provided with a water outlet pipe, which is connected between the first heating unit and the extraction heat side after passing through the second heat exchanger. It also includes a second heating unit, a sugar melting heat side, a second cooling unit, and a preparation water side, which are connected in sequence from the hot water tank; After passing through the second heat exchanger, the water outlet pipe splits into two paths. One path connects to the water outlet of the first heating unit and mixes with the hot water heated by the first heating unit to supply hot water to the extraction heat side. The other path connects to the water outlet of the second heating unit and mixes with the hot water heated by the second heating unit to supply hot water to the sugar melting heat side. This also includes low-temperature heat pump units; The hot water in the heat recovery pipeline enters the third heat exchanger after passing through the first heat exchanger, and then exchanges heat again in the third heat exchanger before flowing back to the first cooling unit. The low-temperature heat pump unit has a low-temperature heat absorption side, a low-temperature heat release side, and a low-temperature magnetic levitation centrifugal compressor. The low-temperature heat absorption side absorbs heat in the third heat exchanger and releases heat in the fourth heat exchanger after the low-temperature magnetic levitation centrifugal compressor performs work. The hot water tank is provided with a water inlet pipe, and the water inlet pipe flows through the fourth heat exchanger to absorb heat; The low-temperature heat absorption side has a third circulation pipeline, and the refrigerant in the third circulation pipeline exchanges heat with the hot water flowing through it when it passes through the third heat exchanger. The low-temperature heat release side has a fourth circulation pipeline, which flows through the fourth heat exchanger; When the water in the inlet pipe flows through the fourth heat exchanger, it exchanges heat with the refrigerant in the fourth circulation pipe and then enters the hot water tank. The water inlet pipe is equipped with a third heating unit. The water inlet pipe is divided into two paths, which flow through the fourth heat exchanger and the third heating unit respectively before mixing and entering the hot water tank.

2. The magnetic levitation centrifugal heat pump heat recovery system for tea beverage production according to claim 1, characterized in that: The high-temperature heat-absorbing side has a first circulation pipeline, in which the refrigerant in the first circulation pipeline exchanges heat with the hot water flowing through the first heat exchanger. The high-temperature heat release side has a second circulation pipeline, which flows through the second heat exchanger; When the water in the outlet pipe flows through the second heat exchanger, it exchanges heat with the refrigerant in the second circulation pipe. After the heat exchange, it mixes with the hot water heated by the first heating unit and supplies hot water to the extraction heating side.

3. The magnetic levitation centrifugal heat pump heat recovery system for tea beverage production according to claim 1, characterized in that, A separator is provided between the hot side for extraction and the water side for preparation.

4. The magnetic levitation centrifugal heat pump heat recovery system for tea beverage production according to claim 1, characterized in that, The water in the hot water tank enters the first heating unit and is heated to 80℃-100℃ by the first heating unit before entering the extraction heat side for heating. After being heated by the extraction heat side, the hot water enters the first cooling unit, and a portion of the hot water enters the heat recovery pipeline.

5. A magnetic levitation centrifugal heat pump heat recovery system for tea beverage production according to claim 1, characterized in that, The first heating unit, the second heating unit, and the third heating unit use one or more of the following methods for heating water: steam heating, electric heating, or hot water circulation heat exchange.

6. The magnetic levitation centrifugal heat pump heat recovery system for tea beverage production according to claim 1, characterized in that, The first cooling unit and the second cooling unit are respectively equipped with cooling towers and connected to chilled water pipelines.

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