A heat pump in food pasteurization cold heat cogeneration application device

Abstract

The utility model discloses a kind of heat pump in food pasteurization cold and heat cogeneration application device, including conveying belt, sterilization pool and cooling pool, wherein, conveying belt includes the sterilization section and cooling section that immerse in sterilization pool and cooling pool in sequence, still include primary heat pump, primary insulation water tank, secondary heat pump and tertiary heat pump, wherein, the outlet of secondary heat pump and sterilization pool are connected by the primary output pipeline of being prearranged with intercommunication;The outlet of primary insulation water tank and secondary heat pump are connected by the secondary input pipeline of being prearranged with intercommunication, the backwater of tertiary heat pump and cooling pool are connected by the primary recovery pipeline of being prearranged with intercommunication, secondary input pipeline is bypassed and led out with secondary recovery pipeline, the backwater of secondary heat pump and sterilization pool are also connected by the tertiary recovery pipeline of being prearranged with intercommunication, the utility model is recycled by relevant heat pump to the heat of sterilization pool and cooling pool, with the characteristics of low cost, safer.

Description

Technical Field

[0001] This utility model relates to the technical field of canned food production, and in particular to a heat pump application device for combined cooling and heating in food pasteurization. Background Technology

[0002] Currently, most technologies for sterilizing canned goods involve immersing them in high-temperature hot water. The specific method often involves directly transferring the cans to a high-temperature sterilization tank for immersion for a certain period. After sterilization, the cans then need to be transferred to a cooling tank for cooling. This method not only requires prolonged immersion of the cans in the high-temperature sterilization tank and cooling tank, but also necessitates continuous heating of the high-temperature hot water in the sterilization tank. This process is cumbersome, labor-intensive, costly, and inefficient. Therefore, based on the above technical problems, this application proposes a more efficient and lower-cost heat pump co-generation application device for food pasteurization. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a heat pump application device for combined heat and cold production in food pasteurization. It utilizes an ultra-high temperature water source heat pump to recover the heat carried by the sterilized material from the sterilization tank to the cooling tank water to prepare high temperature hot water or cleaning hot water, which is then input into the sterilization tank to participate in the high temperature sterilization process or stored in an insulated water tank for cleaning and disinfection of production equipment.

[0004] To achieve the above objectives, this utility model provides a heat pump co-production device for food pasteurization, comprising a conveyor belt, a sterilization tank, and a cooling tank. The conveyor belt includes a sterilization section and a cooling section sequentially immersed in the sterilization tank and the cooling tank. It also includes a primary heat pump, a primary insulated water tank, a secondary heat pump, and a tertiary heat pump. The outlet of the secondary heat pump is connected to the sterilization tank via a pre-set primary output pipe; the outlet of the primary insulated water tank is connected to the secondary heat pump via a pre-set secondary input pipe; and the tertiary heat pump... The return inlet of the pump is connected to the cooling pool via a pre-set primary recovery pipe; wherein, the primary recovery pipe is used to transport the used cooling water in the cooling pool to the tertiary heat pump; a secondary recovery pipe is bypassed from the secondary input pipe, wherein, the secondary recovery pipe is used to transport the used cooling water in the cooling pool to the secondary heat pump for heating; the return inlet of the secondary heat pump is also connected to the sterilization pool via a pre-set tertiary recovery pipe; wherein, the tertiary recovery pipe is used to recover the used high-temperature hot water from the sterilization pool.

[0005] Furthermore, the primary heat pump is equipped with a primary water supply pipe, which is used to supply heating water to the primary heat pump; the primary water supply pipe is equipped with a six-stage solenoid valve, and the cooling pool is equipped with a secondary water supply pipe, which is used to supply cooling water to the cooling pool; the secondary water supply pipe is equipped with a seven-stage solenoid valve.

[0006] Furthermore, the secondary input pipeline is equipped with a primary solenoid valve and a primary water pump for controlling the on / off state.

[0007] Furthermore, the secondary recovery pipeline is equipped with a secondary water pump and a secondary solenoid valve for controlling the on / off state; the tertiary recovery pipeline is also equipped with a tertiary water pump.

[0008] Furthermore, the outlet of the secondary heat pump is connected to the inlet of the primary insulated water tank via a pre-installed primary cleaning pipe; wherein, the primary cleaning pipe is used to transport cleaning hot water; a three-stage solenoid valve for controlling the on / off state is installed on the primary cleaning pipe; a secondary cleaning pipe is bypassed from the primary cleaning pipe, wherein, the secondary cleaning pipe is used to connect the secondary heat pump and the cooling pool; a four-stage solenoid valve for controlling the on / off state is installed on the secondary cleaning pipe.

[0009] Furthermore, the outlet of the primary insulated water tank and the inlet of the tertiary heat pump are connected by a pre-set tertiary cleaning pipe; wherein, a tertiary water pump is installed on the tertiary cleaning pipe; and the outlet of the tertiary heat pump is connected to the cooling pool by a pre-set tertiary cleaning pipe.

[0010] Furthermore, it also includes a secondary insulated water tank, which is used to store high-temperature hot water recovered from the sterilization tank; the secondary insulated water tank is connected to the sterilization tank through a pre-set four-stage recovery pipeline; wherein the four-stage recovery pipeline is also equipped with a five-stage water pump and a five-stage solenoid valve.

[0011] Furthermore, the sterilization tank and the cooling tank are respectively equipped with a primary temperature sensor and a secondary temperature sensor for monitoring the temperature inside the tank.

[0012] Furthermore, the sterilization tank is also equipped with a primary water level sensor for detecting the water level in the sterilization tank; the cooling tank is also equipped with a secondary water level sensor for detecting the water level in the cooling tank.

[0013] Furthermore, the output and input ports of both the sterilization tank and the cooling tank are equipped with filter screens.

[0014] The present invention adopts the above-described solution, and its beneficial effects are as follows: High efficiency: By setting up a primary heat pump and a tertiary heat pump, the externally input water is heated in stages, which improves and optimizes the heating method, allowing for more efficient output of hot water, thereby ensuring the effective high-temperature sterilization in the sterilization tank.

[0015] Low cost: The high-temperature hot water in the sterilization tank is recovered, heated, and re-inputted through a heat pump. At the same time, the heated cooling water in the cooling tank is recovered, and the heat in the heated cooling water is used to prepare high-temperature hot water or hot water for cleaning, thereby reducing the amount of water input from the outside and making it easier to reduce the cost of preparing high-temperature hot water.

[0016] Safety: Through the coordination of the secondary heat pump, the tertiary heat pump and related cleaning pipelines, the cooling pool after cleaning with high-temperature hot water and the primary insulated water tank maintain good working conditions, thereby ensuring that the hot water output from the primary insulated water tank and the sterilized items cooled by the cooling pool meet production requirements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a heat pump application device for combined cooling and heating in food pasteurization.

[0018] Figure 2 This is a schematic diagram of the operation of a heat pump system used in food pasteurization for combined cooling and heating.

[0019] Among them, 1-conveyor belt, 2-sterilization tank, 21-primary temperature sensor, 3-cooling tank, 31-secondary water supply pipeline, 311-seventh-stage solenoid valve, 32-secondary temperature sensor, 4-primary heat pump, 41-primary input pipeline, 42-primary water supply pipeline, 421-sixth-stage solenoid valve, 5-primary insulated water tank, 51-secondary input pipeline, 511-primary solenoid valve, 512-primary water pump, 52-secondary recovery pipeline, 521-secondary solenoid valve, 522-secondary water pump, 5 3-Third-stage cleaning pipeline, 531-Fourth-stage water pump, 6-Second-stage heat pump, 61-First-stage output pipeline, 62-Second-stage cleaning pipeline, 621-Fourth-stage solenoid valve, 63-Third-stage recovery pipeline, 631-Third-stage water pump, 64-First-stage cleaning pipeline, 641-Third-stage solenoid valve, 7-Third-stage heat pump, 71-First-stage recovery pipeline, 72-Fourth-stage cleaning pipeline, 73-Second-stage output pipeline, 8-Second-stage insulated water tank, 81-Fourth-stage recovery pipeline, 811-Fifth-stage water pump, 812-Fifth-stage solenoid valve. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description of it is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0021] See appendix Figure 1 As shown in this embodiment, a heat pump application device for combined heat and cold production in food pasteurization includes a conveyor belt 1, a sterilization tank 2, and a cooling tank 3. The conveyor belt 1 includes a sterilization section and a cooling section that are sequentially immersed in the sterilization tank 2 and the cooling tank 3. It also includes a primary heat pump 4, a primary insulated water tank 5, a secondary heat pump 6, and a tertiary heat pump 7. The outlet of the secondary heat pump 6 is connected to the sterilization tank 2 through a pre-set primary output pipe 61. The return outlet of the secondary heat pump 6 is also connected to the sterilization tank 2 through a pre-set tertiary recovery pipe. The system is connected to pipe 63; the three-stage recovery pipe 63 is used to recover used high-temperature hot water from sterilization tank 2. A three-stage water pump 631 is also installed on the three-stage recovery pipe 63. Specifically, when the high-temperature hot water is used to immerse and disinfect the items being sterilized, some heat is transferred to the items, causing the overall temperature of the items to rise, which in turn lowers the temperature of the high-temperature hot water. Through the cooperation of the three-stage recovery pipe 63 and the three-stage water pump 631, the high-temperature hot water is recovered from sterilization tank 2 for reheating, thereby reducing the heating time and cost. See appendix. Figure 2 As shown by the solid arrow See appendix Figure 1 As shown, in this embodiment, the outlet of the primary insulated water tank 5 is connected to the secondary heat pump 6 via a pre-set secondary input pipe 51, and the return outlet of the tertiary heat pump 7 is connected to the cooling pool 3 via a pre-set primary recovery pipe 71. The primary recovery pipe 71 is used to transport the used cooling water in the cooling pool 3 to the tertiary heat pump 7. The heated cooling water in the cooling pool 3 is recovered through the primary recovery pipe 71 to maintain a constant preset temperature in the cooling pool 3. At the same time, the heated cooling water recovered from the cooling pool 3 is heated by the tertiary heat pump 7 to supply water to the primary insulated water tank 5, thereby ensuring that the primary insulated water tank 5 stores hot water for cleaning sterilized materials and the production line.

[0022] Furthermore, sterilization tank 2 and cooling tank 3 are respectively equipped with a primary temperature sensor 21 and a secondary temperature sensor 32 for monitoring the temperature inside the tank. Through the primary temperature sensor 21 and the secondary temperature sensor 32, the temperature inside sterilization tank 2 and cooling tank 3 is controlled to be maintained within a preset range, thereby ensuring the high-temperature sterilization function of sterilization tank 2 and the cooling function of cooling tank 3.

[0023] Furthermore, the sterilization tank 2 is also equipped with a primary water level sensor 22 for detecting the water level in the sterilization tank 2; the cooling tank 3 is also equipped with a secondary water level sensor 33 for detecting the water level in the cooling tank 3. Through the primary water level sensor 22 and the secondary water level sensor 33, it is ensured that the water level in the sterilization tank 2 and the cooling tank 3 is kept within a preset range, so as to avoid the overflow of hot water due to excessive water level, which may cause injury to personnel; or the sterilization tank 2 and the cooling tank 3 may not be able to achieve the functions of high-temperature sterilization and cooling due to excessive water level.

[0024] In this embodiment, the output and input ports of the sterilization tank 2 and the cooling tank 3 are equipped with filter screens (not shown in the figure) to prevent some of the sterilized items from being damaged during operation in the sterilization tank 2 or the cooling tank 3, which would cause the internal materials of the sterilized items to leak into the sterilization tank 2 or the cooling tank 3 and then enter the relevant pipes or heat pumps, causing blockages, thereby reducing the maintenance costs.

[0025] See appendix Figure 1 As shown, in this embodiment, a secondary recovery pipe 52 is bypassed from the secondary input pipe 51. The secondary recovery pipe 52 is used to transport the used cooling water in the cooling pool 3 to the secondary heat pump 6 for heating. The secondary recovery pipe 52 is equipped with a secondary water pump 522 and a secondary solenoid valve 521 for controlling the on / off state. The secondary input pipe 51 is equipped with a primary solenoid valve 511 and a primary water pump 512 for controlling the on / off state. The secondary recovery pipe 52 is equipped with a secondary water pump 522 and a secondary solenoid valve 521 for controlling the on / off state. Specifically, the sterilized items that have been sterilized at high temperature in the sterilization pool 2 are cooled in the cooling pool 3. The cooling water in the cooling pool 3 is heated and its temperature rises. The heated cooling water in the cooling pool 3 is transported to the secondary heat pump 6 through the secondary recovery pipe 52 for waste heat recovery. This heat is used to continuously heat the high-temperature hot water in the sterilization pool 2 and output it to the sterilization pool 2 to participate in high-temperature sterilization again, thereby reducing the primary heat energy required by the high-temperature sterilization pool for heating and temperature control.

[0026] It should be noted that, unlike the traditional method of outputting high-temperature hot water to sterilization tank 2, this embodiment uses the aforementioned primary recovery pipe 71, secondary recovery pipe 52, and tertiary recovery pipe 63 to perform multi-channel recovery and heating of the water in cooling tank 3 and sterilization tank 2. In this embodiment, the time required for reheating the hot water with heat is much shorter than the time required for heating room temperature water with traditional equipment. Furthermore, the water used in this embodiment is all recycled, resulting in low operating costs.

[0027] See appendix Figure 1As shown, in this embodiment, the primary heat pump 4 is equipped with a primary water supply pipe 42, which supplies heating water to the primary heat pump 4; the primary water supply pipe 42 is equipped with a six-stage solenoid valve 421, and the cooling pool 3 is equipped with a secondary water supply pipe 31, which supplies cooling water to the cooling pool 3; the secondary water supply pipe 31 is equipped with a seven-stage solenoid valve 311. Specifically, the primary heat pump 4 recovers heat energy from the working environment to preheat the external ambient temperature water input into the primary water supply pipe 42, thereby reducing the cost of preparing high-temperature hot water and facilitating the reduction of subsequent heating time; in addition, the secondary water supply pipe 31 supplies external ambient temperature water to the cooling pool 3, allowing the sterilized items that have undergone high-temperature sterilization in the sterilization pool 2 to be cooled in the cooling pool 3, facilitating subsequent labeling and other processes on the sterilized items.

[0028] Furthermore, it also includes a secondary insulated water tank 8, which is used to store high-temperature hot water recovered from the sterilization tank 2. The secondary insulated water tank 8 is connected to the sterilization tank 2 through a pre-installed four-stage recovery pipeline 81. The four-stage recovery pipeline 81 is also equipped with a five-stage water pump 811 and a five-stage solenoid valve 812. The opening of the five-stage water pump 811 and the five-stage solenoid valve 812 is controlled according to the working conditions. The high-temperature hot water in the sterilization tank 2 is recovered through the four-stage recovery pipeline 81 and transported to the secondary insulated water tank 8 for storage, so as to facilitate the subsequent supply of high-temperature hot water to other processes. At the same time, the high-temperature hot water recovered from the sterilization tank 2 through the four-stage recovery pipeline 81 can appropriately control the water level in the sterilization tank 2, ensuring that the high-temperature hot water in the sterilization tank 2 will not overflow, avoid injury to personnel, and prevent disruption to normal operation.

[0029] See appendix Figure 2 As shown, in this embodiment, the outlet of the secondary heat pump 6 and the inlet of the primary insulated water tank 5 are connected by a pre-installed primary cleaning pipe 64; wherein, the primary cleaning pipe 64 is used to transport cleaning hot water; a three-stage solenoid valve 641 for controlling the on / off state is installed on the primary cleaning pipe 64; a secondary cleaning pipe 62 is bypassed from the primary cleaning pipe 64, wherein, the secondary cleaning pipe 62 is used to connect the secondary heat pump 6 and the cooling pool 3; a four-stage solenoid valve 62 for controlling the on / off state is installed on the secondary cleaning pipe 62. 1; The outlet of the primary heat pump 5 and the inlet of the tertiary heat pump 7 are connected by a pre-set tertiary cleaning pipe 53; a tertiary water pump 531 is installed on the tertiary cleaning pipe 53; the outlet of the tertiary heat pump 7 and the cooling pool 3 are connected by a pre-set tertiary cleaning pipe 72. By passing the high-temperature hot water output by the secondary heat pump 6 through the relevant cleaning pipes, the primary heat pump 5 and the cooling pool 3 are disinfected at high temperature, thereby ensuring that the production line meets the production requirements and ensuring the production quality of the sterilized products.

[0030] To facilitate explanation, the following section provides a further explanation of the specific working process of a heat pump application device in food pasteurization, combining cooling and heating.

[0031] Preliminary preparations: First, the seventh-stage solenoid valve 311 is opened, and the secondary water supply pipe 31 delivers room-temperature cooling water to the cooling pool 3 until the water level reaches the preset height, then closes. Next, the first-stage solenoid valve 511 and the sixth-stage solenoid valve 421 are opened, and the first-stage water supply pipe 42 delivers room-temperature water to the first-stage heat pump 4 for primary heating. The first-stage heat pump 4 delivers the initially heated water to the first-stage insulated water tank 5 through the first-stage input pipe 41. The first-stage insulated water tank 5 delivers the hot water to the second-stage heat pump 6 through the first-stage input pipe 41 for secondary heating. When the hot water temperature in the second-stage heat pump 6 reaches the preset value, the second-stage heat pump 6 delivers high-temperature hot water to the sterilization pool 2 through the first-stage output pipe 61 until the water level in the sterilization pool 2 reaches the preset height, thus completing the preliminary preparations.

[0032] When sterilizing items: First, the items treated in the previous process are moved by conveyor belt 1 to the sterilization section of sterilization tank 2 for high-temperature immersion sterilization, and then moved to cooling tank 3 for immersion cooling. During this process, when the high-temperature hot water in sterilization tank 2 heats the items, and the temperature of the hot water decreases, the tertiary water pump 631 is activated, allowing the cooled hot water to be transported through the tertiary recovery pipe 63 to the secondary heat pump 6 for reheating. Once the cooled hot water recovered from sterilization tank 2 has reheated to the preset temperature, it is then output through the primary output pipe 61 back to sterilization tank 2 for high-temperature sterilization. When the cooling water in cooling tank 3 heats up, the heated cooling water is transported through the primary recovery pipe 71 to the tertiary heat pump 7 for heating, thus cooling the heated cooling water recovered from cooling tank 3. After the water is heated to the temperature required for the cleaning process, it is then transported to the primary insulated water tank 5 through the secondary output pipe 73 for heat preservation and storage, to be used in subsequent cleaning processes. At the same time, the secondary solenoid valve 521 and the secondary water pump 522 are opened, and the heated cooling water is transported to the secondary heat pump 6 through the secondary recovery pipe 52 for heating. After the heated cooling water recovered from the cooling pool 3 is heated to the temperature required for the sterilization pool 2, it is output to the sterilization pool 2 through the primary output pipe 61 for high-temperature disinfection. In addition, the septum solenoid valve 311 is opened, and the secondary water supply pipe 31 supplies room temperature cooling water to the cooling pool 3, thereby maintaining the dynamic balance of the cooling water level in the cooling pool 3. Finally, the conveyor belt 1 transports the sterilized items output from the cooling section to the next process, thereby completing the sterilization work of the sterilized items.

[0033] When cleaning the production line: the secondary heat pump 6 recovers and heats the cooling water in the cooling pool 3 through the primary recovery pipe 71. When the cooling water is heated to the temperature required for the cleaning process, it is transported to the primary insulated water tank 5 through the secondary output pipe 73 for storage until the water level in the cooling pool 3 is zero.

[0034] When the primary insulated water tank 5 contains sufficient cleaning hot water and the water level in the cooling pool 3 is zero, the quaternary water pump 531 is activated. The quaternary water pump 531 transports the cleaning hot water stored in the primary insulated water tank 5 to the tertiary heat pump 7 through the tertiary cleaning pipe 53 for reheating, ensuring that the temperature of the cleaning hot water meets the preset value. Then, the cooling pool 3 is cleaned through the quaternary cleaning pipe 72. When the primary insulated water tank 5 does not contain sufficient cleaning hot water and the water level in the cooling pool 3 is zero, the tertiary solenoid valve 641 and the quaternary solenoid valve 621 are activated. The secondary heat pump 6 transports cleaning hot water to the primary insulated water tank 5 and the cooling pool 3 through the primary cleaning pipe 64 and the secondary cleaning pipe 62, thereby completing the cleaning work of the production line.

[0035] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or alterations made by those skilled in the art to the technical solution of this utility model without departing from its scope are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its scope should be covered within the protection scope of this utility model.

Claims

1. A heat pump application device for combined heat and cold production in food pasteurization, comprising a conveyor belt (1), a sterilization tank (2), and a cooling tank (3), wherein, The conveyor belt (1) includes a sterilization section and a cooling section that are sequentially immersed in the sterilization tank (2) and the cooling tank (3), characterized in that: it further includes a primary heat pump (4), a primary insulated water tank (5), a secondary heat pump (6), and a tertiary heat pump (7), wherein the outlet of the secondary heat pump (6) is connected to the sterilization tank (2) through a pre-set primary output pipe (61); the outlet of the primary insulated water tank (5) is connected to the secondary heat pump (6) through a pre-set secondary input pipe (51); and the return outlet of the tertiary heat pump (7) is connected to the cooling tank (3) through a pre-set primary recovery pipe (51). 71) Connected; wherein, the primary recovery pipe (71) is used to transport the used cooling water in the cooling pool (3) to the tertiary heat pump (7); a secondary recovery pipe (52) is bypassed on the secondary input pipe (51), wherein, the secondary recovery pipe (52) is used to transport the used cooling water in the cooling pool (3) to the secondary heat pump (6) for heating; the return water port of the secondary heat pump (6) is also connected to the sterilization pool (2) through a pre-set tertiary recovery pipe (63); wherein, the tertiary recovery pipe (63) is used to recover the used high-temperature hot water from the sterilization pool (2).

2. The heat pump application device for combined cooling and heating in food pasteurization according to claim 1, characterized in that: The primary heat pump (4) is provided with a primary water supply pipe (42), wherein the primary water supply pipe (42) is used to supply heating water to the primary heat pump (4); the primary water supply pipe (42) is provided with a six-stage solenoid valve (421); the cooling pool (3) is provided with a secondary water supply pipe (31), wherein the secondary water supply pipe (31) is used to supply cooling water to the cooling pool (3); the secondary water supply pipe (31) is provided with a seven-stage solenoid valve (311).

3. The heat pump application device for combined cooling and heating in food pasteurization according to claim 1, characterized in that: The secondary input pipeline (51) is equipped with a primary solenoid valve (511) and a primary water pump (512) for controlling the on / off state.

4. The heat pump application device for combined cooling and heating in food pasteurization according to claim 1, characterized in that: The secondary recovery pipeline (52) is equipped with a secondary water pump (522) and a secondary solenoid valve (521) for controlling the on / off state; the tertiary recovery pipeline (63) is also equipped with a tertiary water pump (631).

5. The heat pump application device for combined cooling and heating in food pasteurization according to claim 1, characterized in that: The outlet of the secondary heat pump (6) is connected to the inlet of the primary insulated water tank (5) via a pre-installed primary cleaning pipe (64); wherein the primary cleaning pipe (64) is used to transport cleaning hot water; a three-stage solenoid valve (641) for controlling the on / off state is provided on the primary cleaning pipe (64); a secondary cleaning pipe (62) is bypassed from the primary cleaning pipe (64); wherein the secondary cleaning pipe (62) is used to connect the secondary heat pump (6) and the cooling pool (3); a four-stage solenoid valve (621) for controlling the on / off state is provided on the secondary cleaning pipe (62).

6. The heat pump application device for combined cooling and heating in food pasteurization according to claim 1, characterized in that: The outlet of the primary heat-insulating water tank (5) is connected to the inlet of the tertiary heat pump (7) through a pre-set tertiary cleaning pipe (53); wherein a tertiary water pump (531) is installed on the tertiary cleaning pipe (53); the outlet of the tertiary heat pump (7) is connected to the cooling pool (3) through a pre-set tertiary cleaning pipe (72).

7. The heat pump application device for combined cooling and heating in food pasteurization according to claim 1, characterized in that: It also includes a secondary insulated water tank (8), wherein the secondary insulated water tank (8) is used to store high-temperature hot water recovered from the sterilization pool (2); the secondary insulated water tank (8) and the sterilization pool (2) are connected by a pre-set four-stage recovery pipeline (81); wherein the four-stage recovery pipeline (81) is also equipped with a five-stage water pump (811) and a five-stage solenoid valve (812).

8. The heat pump application device for combined cooling and heating in food pasteurization according to claim 1, characterized in that: The sterilization tank (2) and the cooling tank (3) are respectively equipped with a primary temperature sensor (21) and a secondary temperature sensor (32) for monitoring the temperature inside the tank.

9. A heat pump application device for combined cooling and heating in food pasteurization according to claim 1, characterized in that: The sterilization tank (2) is also equipped with a primary water level sensor (22) for detecting the water level in the sterilization tank (2); the cooling tank (3) is also equipped with a secondary water level sensor (33) for detecting the water level in the cooling tank (3).

10. A heat pump application device for combined cooling and heating in food pasteurization according to claim 1, characterized in that: The sterilization tank (2) and the cooling tank (3) are equipped with filter screens on their output and input ports.

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