Double-coil four-pipe type heat and humidity treatment device and working method thereof

Abstract

The invention relates to the technical field of air heat and humidity treatment, in particular to a double-coil-pipe four-pipe type heat and humidity treatment device and a working method thereof.The double-coil-pipe four-pipe type heat and humidity treatment device comprises a first coil pipe provided with a first water inlet and a first water outlet; the second coil pipe is provided with a second water inlet and a second water outlet; a first water inlet pipe, a second water inlet pipe, a first water outlet pipe and a second water outlet pipe; the first three-way regulating valve comprises a first interface, a second interface and a third interface; the second three-way regulating valve comprises a fourth interface, a fifth interface and a sixth interface; and a third three-way regulating valve and a fourth three-way regulating valve. Through flexible connection of the four sets of three-way valves and intelligent switching of three working modes, the heat and humidity treatment process of agricultural product drying processing is remarkably optimized, and therefore the effects that a cold and hot water mixing temperature adjusting function is achieved, a cold coil pipe and a hot coil pipe can collaboratively share peak load, the specification of the coil pipes is reduced by 40% or above, and the energy consumption of a fan is reduced by 35% or above are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of air heat and humidity treatment, and more particularly to a double-coil four-pipe heat and humidity treatment device and a working method thereof. Background Art

[0002] The post-harvest drying process for most agricultural products requires regulating the temperature and humidity of the processing environment to control the drying rate. This drying process requires a gradual increase in temperature and decrease in humidity, often progressing through three phases: an initial period of slow dehumidification with a small temperature increase, a mid-term period of rapid dehumidification with a stable temperature, and a final period of rapid temperature increase and slow dehumidification. Due to fluctuations in outdoor temperature and humidity, the heat and humidity treatment equipment used to regulate the processing environment must simultaneously possess dry heating, dry cooling, cooling and dehumidification, constant temperature dehumidification, and heating and dehumidification functions. Current dual-coil, four-pipe heat and humidity treatment systems have separate cold and hot coils. The hot coil must be selected for maximum heating capacity, while the cold coil must be selected for maximum cooling and dehumidification capacity. This results in oversized coils, high air flow resistance, and high fan energy consumption. Furthermore, the hot and cold water temperatures cannot be adjusted, making dry cooling impossible. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings in the prior art. The present invention proposes a double-coil four-pipe heat and moisture treatment device and its working method, which can reduce the specifications of the cold and hot coils and adjust the water inlet temperature of the cold and hot coils to meet the requirements of different heat and moisture treatment processes for the water inlet temperature of the cold and hot coils.

[0004] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: The present invention proposes a double-coil four-pipe heat and moisture treatment device, comprising: a first coil having a first water inlet and a first water outlet; a second coil having a second water inlet and a second water outlet; a first water inlet pipe, a second water inlet pipe, a first water outlet pipe, and a second water outlet pipe; A first three-way regulating valve includes a first port, a second port, and a third port; The second three-way regulating valve includes a fourth interface, a fifth interface, and a sixth interface; The third three-way regulating valve includes a seventh interface, an eighth interface, and a ninth interface; The fourth three-way regulating valve includes a tenth port, an eleventh port, and a twelfth port; Circulation fan: its air outlet is connected with the air inlet of the first coil and the second coil; Temperature sensor and humidity sensor are installed at the air inlet of the circulation fan; A first water temperature sensor is provided on the first water inlet pipe; a second water temperature sensor, disposed on the second water inlet pipe; a control system electrically connected to the first three-way regulating valve, the second three-way regulating valve, the third three-way regulating valve, the fourth three-way regulating valve, the circulating fan, the temperature sensor, the humidity sensor, the first water temperature sensor, and the second water temperature sensor; Wherein, the first coil and the second coil are connected in parallel; The first interface is connected to the first water inlet pipe, the second interface is connected to the first water inlet, and the third interface is connected to the fifth interface; The fourth interface is connected to the second water inlet pipe, and the sixth interface is connected to the second water inlet; The seventh interface is connected to the first water outlet pipe, the eighth interface is connected to the first water outlet, and the ninth interface is connected to the eleventh interface; The tenth interface is connected to the second water outlet pipe, and the twelfth interface is connected to the second water outlet; The control system is configured as: (I) regularly collecting timed temperature data from a temperature sensor, timed humidity data from a humidity sensor, first water temperature data from a first water temperature sensor, and second water temperature data from a second water temperature sensor, and presetting target temperature and target humidity data; (II) Based on the comparison results between all the data in step (I), and in combination with the current passage states of the respective interfaces of the first three-way regulating valve, the second three-way regulating valve, the third three-way regulating valve, and the fourth three-way regulating valve, the openings and passage states of the respective interfaces of the first three-way regulating valve, the second three-way regulating valve, the third three-way regulating valve, and the fourth three-way regulating valve are dynamically adjusted to achieve independent control of the water inlet temperatures of the first coil and the second coil.

[0005] The present invention also provides a working method of a double-coil four-pipe type heat and moisture treatment device, which is applied to the above-mentioned treatment device, comprising: (a) starting the circulation fan, and collecting temperature data, timed humidity data, first water temperature data, and second water temperature data through the control system at regular intervals, and presetting target temperature and target humidity data; (b) Based on the comparison results between all the data in step (a), and in combination with the current path status of each interface of the first three-way regulating valve, the second three-way regulating valve, the third three-way regulating valve, and the fourth three-way regulating valve, dynamically adjust the opening and path status of each interface of the first three-way regulating valve, the second three-way regulating valve, the third three-way regulating valve, and the fourth three-way regulating valve, and select an operating mode, wherein the operating mode includes: Hot and cold water separate pipe mode: the first water inlet pipe is for hot water, and the second water inlet pipe is for cold water; Dual hot water pipe mode: the first water inlet pipe is connected to high-temperature hot water, and the second water inlet pipe is connected to low-temperature hot water; Dual cold water pipe mode: the first water inlet pipe is connected to low-temperature cold water, and the second water inlet pipe is connected to high-temperature cold water.

[0006] As a preferred technical solution of the present invention, in the hot and cold water separate pipe mode: The control system performs the following steps: When the timed temperature data is greater than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the first three-way regulating valve is in the passage state: Control content: reduce the opening of the first interface, the second interface, the seventh interface, and the eighth interface; Increase the opening of the fourth, fifth, tenth and eleventh interfaces; When the timed temperature data is greater than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the second three-way regulating valve is in the passage state: Control content: Increase the opening of the fourth interface, fifth interface, tenth interface, and eleventh interface; When the timed temperature data is greater than the target temperature, the timed humidity data is less than the target humidity, and the first three-way regulating valve is in the passage state: Control content: reduce the opening of the first interface, the second interface, the seventh interface, and the eighth interface; When the timed temperature data is greater than the target temperature, the timed humidity data is less than the target humidity, and the second three-way regulating valve is in the passage state: Control content: reduce the opening of the fourth interface, the fifth interface, the tenth interface, and the eleventh interface; When the timing temperature data = target temperature, and the timing humidity data > target humidity; Control content: Increase the opening of the first interface, second interface, fourth interface, fifth interface, seventh interface, eighth interface, tenth interface, and eleventh interface; When the timed temperature data = target temperature, and the timed humidity data = target humidity: Do not output control content; When the timed temperature data = target temperature, and the timed humidity data < target humidity: Control content: reduce the opening of the first interface, the second interface, the fourth interface, the fifth interface, the seventh interface, the eighth interface, the tenth interface, and the eleventh interface; When the timed temperature data is less than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the first three-way regulating valve is in the passage state; Control content: Increase the opening of the first interface, the second interface, the seventh interface, and the eighth interface; When the timed temperature data is less than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the second three-way regulating valve is in the passage state; Control content: Increase the opening of the first interface, second interface, fourth interface, fifth interface, seventh interface, eighth interface, tenth interface, and eleventh interface; When the timed temperature data is less than the target temperature, the timed humidity data is less than the target humidity, and the first three-way regulating valve is in the passage state; Control content: Increase the opening of the first interface, the second interface, the seventh interface, and the eighth interface; When the timed temperature data is less than the target temperature, the timed humidity data is less than the target humidity, and the second three-way regulating valve is in the passage state; Control content: Increase the opening of the first interface, the second interface, the seventh interface, and the eighth interface; Reduce the openings of the fourth interface, the fifth interface, the tenth interface, and the eleventh interface; (c) Repeat steps (a) to (b) at a set period until the machine stops.

[0007] As a preferred technical solution of the present invention, in the dual hot water pipe mode or the dual cold water pipe mode: The control system performs the following steps: When the timing temperature data ≥ target temperature; Do not output control content; When the timing temperature data is less than the target temperature, the second water temperature data is greater than the timing temperature data, and the opening degree from the fourth interface to the fifth interface is less than 100%; Control content: Increase the opening of the fourth and fifth interfaces; Increase the opening of the fourth and sixth interfaces; Increase the opening of the tenth and eleventh interfaces; Increase the opening of the tenth and twelfth interfaces; When the timing temperature data is less than the target temperature, the second water temperature data is greater than the timing temperature data, and the opening degree from the fourth interface to the fifth interface is 100%; Control content: increase the opening of the first interface, the second interface, the seventh interface, and the eighth interface; When the timing temperature data is less than the target temperature and the second water temperature data is less than the timing temperature data; Control content: Close the access to the fourth, fifth, and sixth interfaces; Close the access to the tenth, eleventh, and twelfth interfaces; Increase the opening of the first interface and the second interface; Increase the opening of the first interface and the third interface; Increase the opening of the seventh and eighth interfaces; Increase the opening of the seventh and ninth interfaces; (c) Repeat steps (a) to (b) at a set period until the machine stops.

[0008] As a preferred technical solution of the present invention, the interval of the timed collection is dynamically adjusted according to the rate of change of the environment: When the temperature change rate is greater than 2°C / min, the interval time is ≤10 seconds; When the temperature change rate is ≤0.5℃ / min, the interval time is ≥60 seconds.

[0009] As a preferred technical solution of the present invention, the increase or decrease of the opening is performed in the same unit, and the adjustment amount each time is at least one unit.

[0010] As a preferred technical solution of the present invention, in step (b), when it is detected that the temperature difference between the first water temperature data and the second water temperature data is continuously greater than 15°C, the mode switching is automatically performed: If the first water temperature data is greater than the second water temperature data + 15°C, switch to the dual hot water pipe mode; If the second water temperature data is greater than the first water temperature data + 15°C, switch to the dual cold water pipe mode.

[0011] A computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the program, the above-mentioned working method is implemented.

[0012] A single chip microcomputer is integrated into the control system of the above-mentioned device, and the single chip microcomputer is configured to execute instructions to implement the dynamic control logic of the above-mentioned working method.

[0013] The beneficial effects of the present invention are as follows: Through the flexible connection of four groups of three-way valves and the intelligent switching of three working modes, the present invention significantly optimizes the heat and moisture treatment process of agricultural product drying processing, and achieves three effects: First, the hot and cold water mixed temperature control function enables the hot and cold coils to collaboratively share the peak load, reducing the coil specifications by more than 40% and the fan energy consumption by 35%; second, the dual cold water pipe mode uses high-temperature cold water to achieve pure sensible heat cooling, completely solving the industry problem that traditional equipment cannot "dry cool"; third, the dynamic temperature and humidity closed-loop control can automatically match the three stages of drying (slow dehumidification / strong dehumidification / fast heating), with a temperature control accuracy of ±0.5°C and a humidity fluctuation reduced by 50%; ultimately, while ensuring the quality of sensitive materials such as Chinese medicinal materials, fruits and vegetables, the equipment cost and operating energy consumption are greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the processing device of the present invention; Figure 2 Is a schematic structural diagram of the first coil of the present invention; Figure 3 is a schematic structural diagram of the second coil of the present invention; Figure 4 This is a schematic structural diagram of a first three-way regulating valve of the present invention; Figure 5 This is a schematic structural diagram of the second three-way regulating valve of the present invention; Figure 6 This is a schematic structural diagram of the third three-way regulating valve of the present invention; Figure 7 It is a structural schematic diagram of the fourth three-way regulating valve of the present invention.

[0015] The marks in the accompanying drawings are: 1-first coil, 101-first water inlet, 102-first water outlet, 2-second coil, 201-second water inlet, 202-second water outlet, 3-circulating fan, 4-first three-way regulating valve, 401-first interface, 402-second interface, 403-third interface, 5-second three-way regulating valve, 501-fourth interface, 502-fifth interface, 503-sixth interface, 6-third three-way regulating valve, 601-seventh interface, 602-eighth interface, 603-ninth interface, 7-fourth three-way regulating valve, 701-tenth interface, 702-eleventh interface, 703-twelfth interface, 8-temperature sensor, 9-humidity sensor, 10-control system, 11-first water inlet pipe, 12-second water inlet pipe, 13-first water outlet pipe, 14-second water outlet pipe, 15-first water temperature sensor, 16-second water temperature sensor. DETAILED DESCRIPTION

[0016] Reference Figure 1 As shown, in order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: The present invention proposes a double-coil four-pipe heat and moisture treatment device, comprising: The first coil is provided with a first water inlet and a first water outlet ( Figure 2 shown); The second coil is provided with a second water inlet and a second water outlet ( Figure 3 shown); a first water inlet pipe, a second water inlet pipe, a first water outlet pipe, and a second water outlet pipe; The first three-way regulating valve includes a first interface, a second interface, and a third interface ( Figure 4 shown); The second three-way regulating valve includes the fourth interface, the fifth interface, and the sixth interface ( Figure 5 shown); The third three-way regulating valve includes the seventh interface, the eighth interface, and the ninth interface ( Figure 6 shown); The fourth three-way regulating valve includes the tenth interface, the eleventh interface, and the twelfth interface ( Figure 7 shown); Circulation fan: its air outlet is connected with the air inlet of the first coil and the second coil; Temperature sensor and humidity sensor are installed at the air inlet of the circulation fan; A first water temperature sensor is provided on the first water inlet pipe; a second water temperature sensor, disposed on the second water inlet pipe; a control system electrically connected to the first three-way regulating valve, the second three-way regulating valve, the third three-way regulating valve, the fourth three-way regulating valve, the circulating fan, the temperature sensor, the humidity sensor, the first water temperature sensor, and the second water temperature sensor; Wherein, the first coil and the second coil are connected in parallel; The first interface is connected to the first water inlet pipe, the second interface is connected to the first water inlet, and the third interface is connected to the fifth interface; The fourth interface is connected to the second water inlet pipe, and the sixth interface is connected to the second water inlet; The seventh interface is connected to the first water outlet pipe, the eighth interface is connected to the first water outlet, and the ninth interface is connected to the eleventh interface; The tenth interface is connected to the second water outlet pipe, and the twelfth interface is connected to the second water outlet; The control system is configured as: (I) regularly collecting timed temperature data from a temperature sensor, timed humidity data from a humidity sensor, first water temperature data from a first water temperature sensor, and second water temperature data from a second water temperature sensor, and presetting target temperature and target humidity data; (II) based on the comparison results between all the data in step (I), and in combination with the current passage states of the respective interfaces of the first three-way regulating valve, the second three-way regulating valve, the third three-way regulating valve, and the fourth three-way regulating valve, dynamically adjusting the openings and passage states of the respective interfaces of the first three-way regulating valve, the second three-way regulating valve, the third three-way regulating valve, and the fourth three-way regulating valve to achieve independent control of the inlet water temperatures of the first coil and the second coil; The present invention also provides a working method of a double-coil four-pipe type heat and moisture treatment device, which is applied to the above-mentioned treatment device, comprising: (a) starting the circulation fan, and collecting temperature data, timed humidity data, first water temperature data, and second water temperature data through the control system at regular intervals, and presetting target temperature and target humidity data; (b) Based on the comparison results between all the data in step (a), and in combination with the current path status of each interface of the first three-way regulating valve, the second three-way regulating valve, the third three-way regulating valve, and the fourth three-way regulating valve, dynamically adjust the opening and path status of each interface of the first three-way regulating valve, the second three-way regulating valve, the third three-way regulating valve, and the fourth three-way regulating valve, and select an operating mode, wherein the operating mode includes: Hot and cold water separate pipe mode: the first water inlet pipe is for hot water, and the second water inlet pipe is for cold water; Dual hot water pipe mode: the first water inlet pipe is connected to high-temperature hot water, and the second water inlet pipe is connected to low-temperature hot water; Dual cold water pipe mode: the first water inlet pipe is connected to low-temperature cold water, and the second water inlet pipe is connected to high-temperature cold water; Among them, in the hot and cold water separate pipe mode: The control system performs the following steps (refer to Table 1): When the timed temperature data is greater than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the first three-way regulating valve is in the passage state: Control content: reduce the opening of the first interface, the second interface, the seventh interface, and the eighth interface; Increase the opening of the fourth, fifth, tenth and eleventh interfaces; When the timed temperature data is greater than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the second three-way regulating valve is in the passage state: Control content: Increase the opening of the fourth interface, fifth interface, tenth interface, and eleventh interface; When the timed temperature data is greater than the target temperature, the timed humidity data is less than the target humidity, and the first three-way regulating valve is in the passage state: Control content: reduce the opening of the first interface, the second interface, the seventh interface, and the eighth interface; When the timed temperature data is greater than the target temperature, the timed humidity data is less than the target humidity, and the second three-way regulating valve is in the passage state: Control content: reduce the opening of the fourth interface, the fifth interface, the tenth interface, and the eleventh interface; When the timing temperature data = target temperature, and the timing humidity data > target humidity; Control content: Increase the opening of the first interface, second interface, fourth interface, fifth interface, seventh interface, eighth interface, tenth interface, and eleventh interface; When the timed temperature data = target temperature, and the timed humidity data = target humidity: Do not output control content; When the timed temperature data = target temperature, and the timed humidity data < target humidity: Control content: reduce the opening of the first interface, the second interface, the fourth interface, the fifth interface, the seventh interface, the eighth interface, the tenth interface, and the eleventh interface; When the timed temperature data is less than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the first three-way regulating valve is in the passage state; Control content: Increase the opening of the first interface, the second interface, the seventh interface, and the eighth interface; When the timed temperature data is less than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the second three-way regulating valve is in the passage state; Control content: Increase the opening of the first interface, second interface, fourth interface, fifth interface, seventh interface, eighth interface, tenth interface, and eleventh interface; When the timed temperature data is less than the target temperature, the timed humidity data is less than the target humidity, and the first three-way regulating valve is in the passage state; Control content: Increase the opening of the first interface, the second interface, the seventh interface, and the eighth interface; When the timed temperature data is less than the target temperature, the timed humidity data is less than the target humidity, and the second three-way regulating valve is in the passage state; Control content: Increase the opening of the first interface, the second interface, the seventh interface, and the eighth interface; Reduce the openings of the fourth interface, the fifth interface, the tenth interface, and the eleventh interface; (c) Repeat steps (a) to (b) at a set period to output the control content until the machine stops; Table 1: Summary of work in hot and cold water pipe mode:

[0017] Among them, in dual hot water pipe mode or dual cold water pipe mode: The control system performs the following steps (refer to Table 2): When the timing temperature data ≥ target temperature; Do not output control content; When the timing temperature data is less than the target temperature, the second water temperature data is greater than the timing temperature data, and the opening degree from the fourth interface to the fifth interface is less than 100%; Control content: Increase the opening of the fourth and fifth interfaces; Increase the opening of the fourth and sixth interfaces; Increase the opening of the tenth and eleventh interfaces; Increase the opening of the tenth and twelfth interfaces; When the timing temperature data is less than the target temperature, the second water temperature data is greater than the timing temperature data, and the opening degree from the fourth interface to the fifth interface is 100%; Control content: increase the opening of the first interface, the second interface, the seventh interface, and the eighth interface; When the timing temperature data is less than the target temperature and the second water temperature data is less than the timing temperature data; Control content: Close the access to the fourth, fifth, and sixth interfaces; Close the access to the tenth, eleventh, and twelfth interfaces; Increase the opening of the first interface and the second interface; Increase the opening of the first interface and the third interface; Increase the opening of the seventh and eighth interfaces; Increase the opening of the seventh and ninth interfaces; (c) Repeat steps (a) to (b) at a set period to output the control content until the machine stops; Table 2: Operation summary table of dual hot water pipe mode or dual cold water pipe mode:

[0018] The interval of the timed collection is dynamically adjusted according to the rate of change of the environment: When the temperature change rate is greater than 2°C / min, the interval time is ≤10 seconds; When the temperature change rate is ≤0.5℃ / min, the interval time is ≥60 seconds; The increase or decrease of the opening is performed in the same unit, and each adjustment amount is at least one unit; Wherein, in step (b), when it is detected that the temperature difference between the first water temperature data and the second water temperature data is continuously greater than 15°C, the mode switching is automatically performed: If the first water temperature data is greater than the second water temperature data + 15°C, switch to the dual hot water pipe mode; If the second water temperature data is greater than the first water temperature data + 15°C, switch to the dual cold water pipe mode; A computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the program, the above-mentioned working method is implemented; A single chip microcomputer is integrated into the control system of the above-mentioned device, and the single chip microcomputer is configured to execute instructions to implement the dynamic control logic of the above-mentioned working method.

[0019] Working principle: The present invention reconstructs the hot and cold water paths through the topological connection of four groups of three-way regulating valves, achieving independent water temperature control under the dual-coil parallel working condition; In the hot and cold water separate pipe mode, the first water inlet pipe flows hot water and the second water inlet pipe flows cold water. At this time, the third port of the first three-way valve and the fifth port of the second three-way valve form a mixing channel. By adjusting the opening of the two valves, the temperature of the mixed water entering the coil can be dynamically controlled (for example, 60℃ hot water and 10℃ cold water mix to make 35℃ warm water). This structure breaks through the limitation of the traditional four-pipe system's completely independent hot and cold coils, allowing a single coil to switch to a "hot and cold mixed mode" as needed, significantly reducing coil specifications. In traditional designs, the hot coil is selected based on the demand for large temperature increases in the later stage (such as 80°C hot water), and the cold coil is selected for large dehumidification capacity in the medium term (such as 5°C cold water). However, the present invention uses a hybrid temperature control function, so that the hot coil only needs to meet the basic heating load (such as 60°C), and the peak load is supplemented by a mixture of hot and cold water. The measured coil size can be reduced by more than 40%, and the fan wind resistance is reduced by about 35%. In view of the three-stage characteristics of agricultural product drying, three operating modes are precisely matched to different needs: In the early stage of slight temperature rise and dehumidification, the hot and cold water pipes are separated to suppress the sudden temperature rise by reducing the opening of the hot water valve, while increasing the opening of the cold water valve to control the humidity; In the mid-term constant temperature dehumidification, the system switches to dual cold water pipe mode, using low-temperature cold water (e.g. 7°C) for full dehumidification, and high-temperature cold water (e.g. 18°C) as a backup to prevent overcooling. In the later stage, when the temperature rises significantly and the moisture is reduced, the dual hot water pipe mode is used to mix high-temperature water (such as 70°C) and low-temperature hot water (such as 45°C) to achieve rapid temperature rise. At the same time, the high-temperature return water preheats the cold water to reduce energy consumption; Crucially, the dual-cold water pipe model solves the industry's "dry cooling" problem: when high-temperature cold water (e.g., 18°C) above the dew point is introduced into the second water inlet pipe, the second coil absorbs only sensible heat without condensation, achieving pure cooling without dehumidification. Low-temperature cold water (e.g., 7°C) from the first water inlet pipe activates dehumidification on demand. Conventional treatment devices, which cannot avoid the dehumidification effect due to their single cold water coil, are unsuitable for scenarios with high humidity requirements (such as edible fungus pretreatment). This invention solves this problem. Dynamic control strategies further enhance the adaptability of processing devices: The temperature and humidity sensors sample at a variable cycle (10 seconds / time when the temperature fluctuates drastically, 60 seconds / time when the temperature is stable) to correct the valve action in real time; When the temperature difference between the two water lines is continuously greater than 15°C, the system automatically switches to dual hot water / cold water mode to avoid manual intervention delays. The following table is a performance comparison table of the traditional double coil four pipe device and the present invention:

[0020] Table Description: This invention uses a three-way valve hybrid architecture and dual-mode water source switching as its core to achieve coordinated temperature regulation and dry cooling of hot and cold coils in a four-pipe system. Compared with traditional designs, its advantages are: Equipment miniaturization: Hybrid temperature control shares peak loads and reduces coil and fan specifications; Full functional coverage: seamless switching from dry cooling (moisturizing) to heating and dehumidification, adapting to complex agricultural product processing curves; Improved energy efficiency: By utilizing high and low temperature water sources in a graded manner (e.g., preheating cold water with 45°C waste heat), the load on the chiller and heater is reduced.

[0021] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0022] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A double-coil four-pipe heat and moisture treatment device, comprising: A first coil (1) is provided with a first water inlet (101) and a first water outlet (102); A second coil (2) provided with a second water inlet (201) and a second water outlet (202); A first water inlet pipe (11), a second water inlet pipe (12), a first water outlet pipe (13), and a second water outlet pipe (14); A first three-way regulating valve (4), comprising a first interface (401), a second interface (402), and a third interface (403); A second three-way regulating valve (5), comprising a fourth interface (501), a fifth interface (502), and a sixth interface (503); A third three-way regulating valve (6), comprising a seventh interface (601), an eighth interface (602), and a ninth interface (603); A fourth three-way regulating valve (7), comprising a tenth port (701), an eleventh port (702), and a twelfth port (703); Circulating fan (3): its air outlet is connected to the air inlet of the first coil (1) and the second coil (2); A temperature sensor (8) and a humidity sensor (9) are arranged at the air inlet of the circulating fan (3); A first water temperature sensor (15), arranged on the first water inlet pipe (11); A second water temperature sensor (16), disposed on the second water inlet pipe (12); A control system (10) is electrically connected to the first three-way regulating valve (4), the second three-way regulating valve (5), the third three-way regulating valve (6), the fourth three-way regulating valve (7), the circulating fan (3), the temperature sensor (8), the humidity sensor (9), the first water temperature sensor (15), and the second water temperature sensor (16); Its characteristics are: The first coil (1) and the second coil (2) are connected in parallel; The first interface (401) is connected to the first water inlet pipe (11), the second interface (402) is connected to the first water inlet (101), and the third interface (403) is connected to the fifth interface (502); The fourth interface (501) is connected to the second water inlet pipe (12), and the sixth interface (503) is connected to the second water inlet (201); The seventh interface (601) is connected to the first water outlet pipe (13), the eighth interface (602) is connected to the first water outlet (102), and the ninth interface (603) is connected to the eleventh interface (702); The tenth interface (701) is connected to the second water outlet pipe (14), and the twelfth interface (703) is connected to the second water outlet (202); The control system (10) is configured to: (I) regularly collecting timed temperature data from the temperature sensor (8), timed humidity data from the humidity sensor (9), first water temperature data from the first water temperature sensor (15), and second water temperature data from the second water temperature sensor (16), and presetting target temperature and target humidity data; (II) Based on the comparison results between all the data in step (I), and in combination with the current passage states of the respective interfaces of the first three-way regulating valve (4), the second three-way regulating valve (5), the third three-way regulating valve (6) and the fourth three-way regulating valve (7), the openings and passage states of the respective interfaces of the first three-way regulating valve (4), the second three-way regulating valve (5), the third three-way regulating valve (6) and the fourth three-way regulating valve (7) are dynamically adjusted to achieve independent control of the inlet water temperatures of the first coil (1) and the second coil (2).

2. An operating method of a double-coil, four-pipe type heat and moisture treatment device, applied to the double-coil, four-pipe type heat and moisture treatment device according to claim 1, characterized in that: include: (a) starting the circulation fan (3), and collecting temperature data, timed humidity data, first water temperature data, and second water temperature data at regular intervals through the control system (10), and presetting target temperature and target humidity data; (b) Based on the comparison results between all the data in step (a), and in combination with the current passage states of the respective interfaces of the first three-way regulating valve (4), the second three-way regulating valve (5), the third three-way regulating valve (6) and the fourth three-way regulating valve (7), the openings and passage states of the respective interfaces of the first three-way regulating valve (4), the second three-way regulating valve (5), the third three-way regulating valve (6) and the fourth three-way regulating valve (7) are dynamically adjusted, and an operating mode is selected, wherein the operating mode includes: Hot and cold water separate pipe mode: the first water inlet pipe (11) is for hot water, and the second water inlet pipe (12) is for cold water; Double hot water pipe mode: the first water inlet pipe (11) is connected to high-temperature hot water, and the second water inlet pipe (12) is connected to low-temperature hot water; Double cold water pipe mode: the first water inlet pipe (11) passes low-temperature cold water, and the second water inlet pipe (12) passes high-temperature cold water.

3. The operating method of the double-coil four-pipe heat and moisture treatment device according to claim 2, characterized in that: In separate hot and cold water pipe mode: The control system (10) performs the following steps: When the timed temperature data is greater than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the first three-way regulating valve (4) is in the passage state: Control content: reducing the openings of the first interface (401), the second interface (402), the seventh interface (601), and the eighth interface (602); Increasing the openings of the fourth interface (501), the fifth interface (502), the tenth interface (701), and the eleventh interface (702); When the timed temperature data is greater than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the second three-way regulating valve (4) is in the passage state: Control content: increasing the opening of the fourth interface (501), the fifth interface (502), the tenth interface (701), and the eleventh interface (702); When the timed temperature data is greater than the target temperature, the timed humidity data is less than the target humidity, and the first three-way regulating valve (4) is in the passage state: Control content: reducing the openings of the first interface (401), the second interface (402), the seventh interface (601), and the eighth interface (602); When the timed temperature data is greater than the target temperature, the timed humidity data is less than the target humidity, and the second three-way regulating valve (5) is in the passage state: Control content: reducing the opening of the fourth interface (501), the fifth interface (502), the tenth interface (701), and the eleventh interface (702); When the timing temperature data = target temperature, and the timing humidity data > target humidity; Control content: increase the opening of the first interface (401), the second interface (402), the fourth interface (501), the fifth interface (502), the seventh interface (601), the eighth interface (602), the tenth interface (701), and the eleventh interface (702); When the timed temperature data = target temperature, and the timed humidity data = target humidity: Do not output control content; When the timed temperature data = target temperature, and the timed humidity data < target humidity: Control content: reducing the opening of the first interface (401), the second interface (402), the fourth interface (501), the fifth interface (502), the seventh interface (601), the eighth interface (602), the tenth interface (701), and the eleventh interface (702); When the timed temperature data is less than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the first three-way regulating valve (4) is in the passage state; Control content: increasing the opening of the first interface (401), the second interface (402), the seventh interface (601), and the eighth interface (602); When the timed temperature data is less than the target temperature, the timed humidity data is greater than or equal to the target humidity, and the second three-way regulating valve (5) is in the passage state; Control content: increase the opening of the first interface (401), the second interface (402), the fourth interface (501), the fifth interface (502), the seventh interface (601), the eighth interface (602), the tenth interface (701), and the eleventh interface (702); When the timed temperature data is less than the target temperature, the timed humidity data is less than the target humidity, and the first three-way regulating valve (4) is in the passage state; Control content: increasing the opening of the first interface (401), the second interface (402), the seventh interface (601), and the eighth interface (602); When the timed temperature data is less than the target temperature, the timed humidity data is less than the target humidity, and the second three-way regulating valve (5) is in the passage state; Control content: increasing the opening of the first interface (401), the second interface (402), the seventh interface (601), and the eighth interface (602); reducing the openings of the fourth interface (501), the fifth interface (502), the tenth interface (701), and the eleventh interface (702); (c) Repeat steps (a) to (b) at a set period until the machine stops.

4. The operating method of the double-coil four-pipe heat and moisture treatment device according to claim 2, characterized in that: In dual hot water pipe mode or dual cold water pipe mode: The control system (10) performs the following steps: When the timing temperature data ≥ target temperature; Do not output control content; When the timing temperature data is less than the target temperature, the second water temperature data is greater than the timing temperature data, and the opening degree from the fourth interface (501) to the fifth interface (502) is less than 100%; Control content: increasing the opening of the fourth interface (501) and the fifth interface (502); Increasing the opening of the fourth interface (501) and the sixth interface (503); Increase the opening of the tenth interface (701) and the eleventh interface (702); Increase the opening of the tenth interface (701) and the twelfth interface (703); When the timing temperature data is less than the target temperature, the second water temperature data is greater than the timing temperature data, and the opening degree from the fourth interface (501) to the fifth interface (502) is 100%; Control content: increasing the opening of the first interface (401), the second interface (402), the opening of the seventh interface (601), and the eighth interface (602); When the timing temperature data is less than the target temperature and the second water temperature data is less than the timing temperature data; Control content: Closing the access to the fourth interface (501), the fifth interface (502), and the sixth interface (503); Close the access to the tenth interface (701), the eleventh interface (702), and the twelfth interface (703); Increasing the opening of the first interface (401) and the second interface (402); Increasing the opening of the first interface (401) and the third interface (403); Increasing the opening of the seventh interface (601) and the eighth interface (602); Increasing the opening of the seventh interface (601) and the ninth interface (603); (c) Repeat steps (a) to (b) at a set period until the machine stops.

5. The operating method of the double-coil four-pipe heat and moisture treatment device according to claim 2, characterized in that: The interval of the timed collection is dynamically adjusted according to the rate of change of the environment: When the temperature change rate is greater than 2°C / min, the interval time is ≤10 seconds; When the temperature change rate is ≤0.5℃ / min, the interval time is ≥60 seconds.

6. The operating method of a double-coil four-pipe heat and moisture treatment device according to any one of claims 2 to 5, characterized in that: The increase or decrease of the opening is performed in the same unit, and each adjustment amount is at least one unit.

7. The operating method of the double-coil four-pipe heat and moisture treatment device according to claim 2, characterized in that: In step (b), when it is detected that the temperature difference between the first water temperature data and the second water temperature data is continuously greater than 15°C, the mode switching is automatically performed: If the first water temperature data is greater than the second water temperature data + 15°C, switch to the dual hot water pipe mode; If the second water temperature data is greater than the first water temperature data + 15°C, switch to the dual cold water pipe mode.

8. A computer device comprising a memory and a processor, characterized in that: The memory stores a computer program, and when the processor executes the program, the working method according to any one of claims 2 to 5 is implemented.

9. A single chip microcomputer, integrated into the control system (10) of the device according to claim 1, characterized in that: The single chip microcomputer is configured to execute instructions to implement the dynamic control logic of the working method according to any one of claims 2 to 5.

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