阅读说明：本技术 太阳能热泵混合烘干系统、烘干方法、装置及控制器 (Solar heat pump hybrid drying system, drying method, drying device and controller ) 是由 陆飞荣 王晓红 谷月明 何建发 郑神安 张鸿宙 于 2019-10-21 设计创作，主要内容包括：本申请实施例提供一种太阳能热泵混合烘干系统、烘干方法、装置及控制器,涉及能源应用技术领域,其中,太阳能热泵混合烘干系统,包括：热泵系统、包含至少一个热交换回路的太阳能热交换系统,以及送风管和第一回风管；所述热泵系统的冷凝器出风口经所述送风管与烘干房的送风口连通,形成送风道；冷凝器入风口经所述第一回风管与所述烘干房的回风口连通,形成第一回风道；一个所述热交换回路贯穿所述冷凝器入风口,用于与所述冷凝器入风口处的空气进行热交换,该系统可提高烘干性能、提高系统可靠性,并兼顾减少对环境造成的污染。(The embodiment of the application provides a solar heat pump mixing drying system, a drying method, a device and a controller, and relates to the technical field of energy application, wherein the solar heat pump mixing drying system comprises: the system comprises a heat pump system, a solar heat exchange system comprising at least one heat exchange loop, an air supply pipe and a first air return pipe; the air outlet of the condenser of the heat pump system is communicated with the air supply outlet of the drying room through the air supply pipe to form an air supply duct; an air inlet of the condenser is communicated with an air return inlet of the drying room through the first air return pipe to form a first air return channel; one heat exchange loop penetrates through the air inlet of the condenser and is used for exchanging heat with air at the air inlet of the condenser, and the system can improve drying performance and reliability and reduce pollution to the environment.)

1. The utility model provides a solar thermal energy pump mixes drying system which characterized in that includes: the system comprises a heat pump system, a solar heat exchange system comprising at least one heat exchange loop, an air supply pipe and a first air return pipe;

the air outlet of the condenser of the heat pump system is communicated with the air supply outlet of the drying room through the air supply pipe to form an air supply duct; an air inlet of the condenser is communicated with an air return inlet of the drying room through the first air return pipe to form a first air return channel;

and the heat exchange loop penetrates through the air inlet of the condenser and is used for carrying out heat exchange with air at the air inlet of the condenser.

2. The solar heat pump hybrid drying system of claim 1, further comprising: and the air inlet of an evaporator of the heat pump system is communicated with the air return inlet of the drying room through the second air return pipe, and the air outlet of the evaporator is communicated with the air inlet of the condenser through the first air return pipe to form a second air return channel.

3. The solar heat pump hybrid drying system of claim 2, wherein the second return air duct is further provided with a fresh air inlet for inputting external ambient air to the evaporator air inlet through the second return air duct to form a fresh air duct.

4. The solar heat pump hybrid drying system of claim 3, wherein one of said heat exchange circuits extends through the fresh air opening in said second return air duct for heat exchange with the outside ambient air entering said fresh air opening.

5. The solar heat pump hybrid drying system of claim 4, wherein a first air valve is disposed at a return air inlet of the first return air pipe, a second air valve is disposed at a return air inlet of the second return air pipe, and a third air valve is disposed at the fresh air inlet, and the first return air pipe, the second return air pipe and the fresh air pipe are respectively switched on or off by controlling the on-off states of the first air valve, the second air valve and the third air valve.

6. The solar heat pump hybrid drying system of claim 4, wherein a communication air duct is disposed between the evaporator and the condenser, and a fourth air valve is disposed on the communication air duct for switching on or off the communication air duct.

7. The solar heat pump hybrid drying system of claim 6, wherein an exhaust duct is disposed between the evaporator and the external environment, and a fifth air valve is disposed on the exhaust duct for controlling the evaporator to exhaust air to the external environment.

8. The solar heat pump hybrid drying system of claim 6, wherein the evaporator air outlet and the condenser air outlet are respectively provided with a circulating fan.

9. The solar heat pump hybrid drying system of claim 8, wherein the heat exchange loop is a water heat exchange loop, the solar heat exchange system comprising: the solar energy heat storage device, the water pump, the water outlet reversing valve, the air-water heat exchanger and the backwater reversing valve;

the water outlet reversing valve and the water return reversing valve are used for controlling the switching between different water heat exchange loops;

the air-water heat exchanger is arranged at the fresh air inlet and the condenser air inlet and is used for exchanging heat with air at the fresh air inlet and the condenser air inlet by utilizing the heat energy of water in the water heat exchange loop.

10. A solar heat pump hybrid drying method applied to the solar heat pump hybrid drying system of claim 9, comprising:

when the temperature of the outlet water of the solar heat storage device is higher than the temperature in the drying room and the temperature difference is higher than or equal to a first temperature threshold value, the following steps are controlled and executed:

conducting the first air return duct and the fresh air duct; closing the second air return duct, the communication duct and the exhaust duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

11. The method of claim 10, further comprising:

when the temperature of the outlet water of the solar heat storage device is higher than the temperature in the drying room and the temperature difference is lower than a second temperature threshold value, stopping operating the water pump;

wherein the first temperature threshold is greater than the second temperature threshold.

12. A solar heat pump hybrid drying method applied to the solar heat pump hybrid drying system of claim 9, comprising:

when the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a third temperature threshold value, the following steps are controlled and executed:

conducting the first air return duct and the fresh air duct; closing the second air return duct, the communication duct and the exhaust duct;

and stopping operating the heat pump system, starting an operating water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

13. The method of claim 12, further comprising:

and when the difference value obtained by subtracting the set temperature of the drying room from the outlet water temperature of the solar heat storage device is smaller than the third temperature threshold value, starting to operate the heat pump system.

14. The method of claim 13, further comprising:

and when the temperature of the outlet water of the solar heat storage device is higher than the external environment temperature, controlling the conduction of the water heat exchange loop penetrating through the fresh air inlet.

15. A solar heat pump hybrid drying method applied to the solar heat pump hybrid drying system of claim 9, comprising:

when the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a fourth temperature threshold value, the following steps are controlled and executed:

conducting the second air return duct; closing the fresh air duct, the communicating air duct and the exhaust air duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

16. A solar heat pump hybrid drying method applied to the solar heat pump hybrid drying system of claim 9, comprising:

when the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a fifth temperature threshold value, the following steps are controlled and executed:

conducting the fresh air duct and the communicating air duct; closing the first air return duct, the second air return duct and the exhaust duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

17. A solar heat pump hybrid drying method applied to the solar heat pump hybrid drying system of claim 9, comprising:

when the temperature of the evaporator is higher than the external environment temperature, the temperature difference is higher than or equal to a sixth temperature threshold, and the outlet water temperature of the solar heat storage device is higher than a seventh temperature threshold, the following steps are controlled and executed:

the first air return duct, the second air return duct, the fresh air duct and the exhaust duct are communicated; closing the communication air duct;

and starting the running water pump and controlling the conduction of the water heat exchange loop penetrating through the fresh air inlet.

18. A solar heat pump hybrid drying device, which is suitable for the solar heat pump hybrid drying system of claim 9, and comprises: the device comprises a first temperature detection module and a first control module;

the first temperature detection module is used for triggering the first control module to control and execute the following steps when the temperature of the outlet water of the solar heat storage device is detected to be higher than the temperature in the drying room and the temperature difference is larger than or equal to a first temperature threshold value:

conducting the first air return duct and the fresh air duct; closing the second air return duct, the communication duct and the exhaust duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

19. The apparatus of claim 18,

the first control module is also used for stopping the operation of the water pump when the temperature of the outlet water of the solar heat storage device is higher than the temperature in the drying room and the temperature difference is lower than a second temperature threshold value;

wherein the first temperature threshold is greater than the second temperature threshold.

20. A solar heat pump hybrid drying device, which is suitable for the solar heat pump hybrid drying system of claim 9, and comprises: the second temperature detection module and the second control module;

the second temperature detection module is used for triggering the second control module to control and execute the following steps when detecting that the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a third temperature threshold value:

conducting the first air return duct and the fresh air duct; closing the second air return duct, the communication duct and the exhaust duct;

and stopping operating the heat pump system, starting an operating water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

21. The apparatus of claim 20,

the second control module is further used for starting the heat pump system when the difference value obtained by subtracting the set temperature of the drying room from the outlet water temperature of the solar heat storage device is smaller than the third temperature threshold value.

22. The apparatus of claim 21,

the second temperature detection module is also used for detecting the external environment temperature; and when the temperature of the outlet water of the solar heat storage device is higher than the temperature of the external environment, the second control module is triggered to control the conduction of the water heat exchange loop penetrating through the fresh air inlet.

23. A solar heat pump hybrid drying device, which is suitable for the solar heat pump hybrid drying system of claim 9, and comprises: the third temperature detection module and the third control module;

the third temperature detection module is used for triggering the third control module to control and execute the following steps when detecting that the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a fourth temperature threshold value:

conducting the second air return duct; closing the fresh air duct, the communicating air duct and the exhaust air duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

24. A solar heat pump hybrid drying device, which is suitable for the solar heat pump hybrid drying system of claim 9, and comprises: the fourth temperature detection module and the fourth control module;

the fourth temperature detection module is used for triggering the fourth control module to control and execute the following steps when detecting that the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a fifth temperature threshold value:

conducting the fresh air duct and the communicating air duct; closing the first air return duct, the second air return duct and the exhaust duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

25. A solar heat pump hybrid drying device, which is suitable for the solar heat pump hybrid drying system of claim 9, and comprises: a fifth temperature detection module and a fifth control module;

the fifth temperature detection module is used for triggering the fifth control module to control and execute the following steps when detecting that the temperature of the evaporator is higher than the external environment temperature, the temperature difference is higher than or equal to a sixth temperature threshold value, and the outlet water temperature of the solar heat storage device is higher than a seventh temperature threshold value:

the first air return duct, the second air return duct, the fresh air duct and the exhaust duct are communicated; closing the communication air duct;

and starting the running water pump and controlling the conduction of the water heat exchange loop penetrating through the fresh air inlet.

26. A controller for performing the solar heat pump hybrid drying method of any one of claims 10 to 17.

Technical Field

The application belongs to the technical field of energy application, and particularly relates to a solar heat pump hybrid drying system, a drying method, a drying device and a controller.

Background

At present, most of the drying methods for products and materials in the market adopt a hot air drying method, and the hot air heating methods of the common drying systems generally include the following methods: 1. electric energy, such as direct heating by electricity and heating by a heat pump; 2. conventional energy sources such as coal, natural gas, firewood, etc. are combusted and heated; 3. new energy, solar energy, geothermal energy, and the like.

By adopting a new energy heating and drying mode, the method has zero waste gas emission, does not pollute the environment, saves energy, but has heating performance easily influenced by weather; the mode of heating by the heat pump is slightly influenced by the external environment, but the heating efficiency is low, a large amount of resources are consumed, and meanwhile, certain pollution is caused to the environment.

Disclosure of Invention

In order to solve various problems caused by a single heating mode in the existing drying system at least to a certain extent, the application provides a solar heat pump mixing drying system, a drying method, a device and a controller, which are used for improving drying performance, improving system reliability and reducing pollution to the environment.

In order to achieve the purpose, the following technical scheme is adopted in the application:

in a first aspect, a solar heat pump hybrid drying system is provided, including: the system comprises a heat pump system, a solar heat exchange system comprising at least one heat exchange loop, an air supply pipe and a first air return pipe;

the air outlet of the condenser of the heat pump system is communicated with the air supply outlet of the drying room through the air supply pipe to form an air supply duct; an air inlet of the condenser is communicated with an air return inlet of the drying room through the first air return pipe to form a first air return channel;

and the heat exchange loop penetrates through the air inlet of the condenser and is used for carrying out heat exchange with air at the air inlet of the condenser.

In a first embodiment of the first aspect, the solar heat pump hybrid drying system further includes: and the air inlet of an evaporator of the heat pump system is communicated with the air return inlet of the drying room through the second air return pipe, and the air outlet of the evaporator is communicated with the air inlet of the condenser through the first air return pipe to form a second air return channel.

In a second implementation manner of the first aspect, the second air return duct is further provided with a fresh air inlet, and is used for inputting external ambient air to the air inlet of the evaporator through the second air return duct to form a fresh air duct.

In a third embodiment of the first aspect, one of the heat exchange circuits extends through the fresh air opening in the second return air duct for heat exchange with outside ambient air entering the fresh air opening.

In a fourth implementation manner of the first aspect, a first air valve is disposed at a return air inlet of the first return air pipe, a second air valve is disposed at a return air inlet of the second return air pipe, a third air valve is disposed at the fresh air inlet, and the first return air pipe, the second return air pipe, and the fresh air pipe are connected or disconnected by controlling on/off states of the first air valve, the second air valve, and the third air valve.

In a fifth implementation manner of the first aspect, a communication air duct is disposed between the evaporator and the condenser, and a fourth air valve is disposed on the communication air duct and used for switching on or off the communication air duct.

In a sixth implementation manner of the first aspect, an exhaust duct is disposed between the evaporator and the external environment, and a fifth air valve is disposed on the exhaust duct and is used for controlling the evaporator to exhaust air to the external environment.

In a seventh implementation manner of the first aspect, the evaporator air outlet position and the condenser air outlet position are respectively provided with a circulating fan.

In an eighth embodiment of the first aspect, the heat exchange loop is a water heat exchange loop, and the solar heat exchange system comprises: the solar energy heat storage device, the water pump, the water outlet reversing valve, the air-water heat exchanger and the backwater reversing valve;

the water outlet reversing valve and the water return reversing valve are used for controlling the switching between different water heat exchange loops;

the air-water heat exchanger is arranged at the fresh air inlet and the condenser air inlet and is used for exchanging heat with air at the fresh air inlet and the condenser air inlet by utilizing the heat energy of water in the water heat exchange loop.

In a second aspect, a solar heat pump hybrid drying method is provided, which is applicable to the solar heat pump hybrid drying system of the first aspect, and includes:

when the temperature of the outlet water of the solar heat storage device is higher than the temperature in the drying room and the temperature difference is higher than or equal to a first temperature threshold value, the following steps are controlled and executed:

conducting the first air return duct and the fresh air duct; closing the second air return duct, the communication duct and the exhaust duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

In a first embodiment of the second aspect, the method further comprises:

when the temperature of the outlet water of the solar heat storage device is higher than the temperature in the drying room and the temperature difference is lower than a second temperature threshold value, stopping operating the water pump;

wherein the first temperature threshold is greater than the second temperature threshold.

In a third aspect, a solar heat pump hybrid drying method is provided, which is applicable to the solar heat pump hybrid drying system of the first aspect, and includes:

when the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a third temperature threshold value, the following steps are controlled and executed:

conducting the first air return duct and the fresh air duct; closing the second air return duct, the communication duct and the exhaust duct;

and stopping operating the heat pump system, starting an operating water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

In a first embodiment of the third aspect, the method further comprises:

and when the difference value obtained by subtracting the set temperature of the drying room from the outlet water temperature of the solar heat storage device is smaller than the third temperature threshold value, starting to operate the heat pump system.

In a second embodiment of the third aspect, the method further comprises:

and when the temperature of the outlet water of the solar heat storage device is higher than the external environment temperature, controlling the conduction of the water heat exchange loop penetrating through the fresh air inlet.

In a fourth aspect, a solar heat pump hybrid drying method is provided, which is applicable to the solar heat pump hybrid drying system of the first aspect, and includes:

when the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a fourth temperature threshold value, the following steps are controlled and executed:

conducting the second air return duct; closing the fresh air duct, the communicating air duct and the exhaust air duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

In a fifth aspect, a solar heat pump hybrid drying method is provided, which is applicable to the solar heat pump hybrid drying system of the first aspect, and includes:

when the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a fifth temperature threshold value, the following steps are controlled and executed:

conducting the fresh air duct and the communicating air duct; closing the first air return duct, the second air return duct and the exhaust duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

In a sixth aspect, a solar heat pump hybrid drying method is provided, which is applicable to the solar heat pump hybrid drying system of the first aspect, and includes:

when the temperature of the evaporator is higher than the external environment temperature, the temperature difference is higher than or equal to a sixth temperature threshold, and the outlet water temperature of the solar heat storage device is higher than a seventh temperature threshold, the following steps are controlled and executed:

the first air return duct, the second air return duct, the fresh air duct and the exhaust duct are communicated; closing the communication air duct;

and starting the running water pump and controlling the conduction of the water heat exchange loop penetrating through the fresh air inlet.

In a seventh aspect, a solar heat pump hybrid drying device is provided, which is suitable for the solar heat pump hybrid drying system in the first aspect, and includes: the device comprises a first temperature detection module and a first control module;

the first temperature detection module is used for triggering the first control module to control and execute the following steps when the temperature of the outlet water of the solar heat storage device is detected to be higher than the temperature in the drying room and the temperature difference is larger than or equal to a first temperature threshold value:

conducting the first air return duct and the fresh air duct; closing the second air return duct, the communication duct and the exhaust duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

In an eighth aspect, a solar heat pump hybrid drying device is provided, which is suitable for the solar heat pump hybrid drying system of the first aspect, and includes: the second temperature detection module and the second control module;

the second temperature detection module is used for triggering the second control module to control and execute the following steps when detecting that the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a third temperature threshold value:

conducting the first air return duct and the fresh air duct; closing the second air return duct, the communication duct and the exhaust duct;

and stopping operating the heat pump system, starting an operating water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

A ninth aspect provides a solar heat pump hybrid drying device, which is suitable for the solar heat pump hybrid drying system of the first aspect, and comprises: the third temperature detection module and the third control module;

the third temperature detection module is used for triggering the third control module to control and execute the following steps when detecting that the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a fourth temperature threshold value:

conducting the second air return duct; closing the fresh air duct, the communicating air duct and the exhaust air duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

In a tenth aspect, a solar heat pump hybrid drying device is provided, which is suitable for the solar heat pump hybrid drying system of the first aspect, and includes: the fourth temperature detection module and the fourth control module;

the fourth temperature detection module is used for triggering the fourth control module to control and execute the following steps when detecting that the temperature of the outlet water of the solar heat storage device is higher than the set temperature of the drying room and the temperature difference is higher than or equal to a fifth temperature threshold value:

conducting the fresh air duct and the communicating air duct; closing the first air return duct, the second air return duct and the exhaust duct;

and starting and operating the heat pump system, starting and operating a water pump and controlling the conduction of the water heat exchange loop penetrating through the air inlet of the condenser.

In an eleventh aspect, a solar heat pump hybrid drying device is provided, which is suitable for the solar heat pump hybrid drying system in the first aspect, and includes: a fifth temperature detection module and a fifth control module;

the fifth temperature detection module is used for triggering the fifth control module to control and execute the following steps when detecting that the temperature of the evaporator is higher than the external environment temperature, the temperature difference is higher than or equal to a sixth temperature threshold value, and the outlet water temperature of the solar heat storage device is higher than a seventh temperature threshold value:

the first air return duct, the second air return duct, the fresh air duct and the exhaust duct are communicated; closing the communication air duct;

and starting the running water pump and controlling the conduction of the water heat exchange loop penetrating through the fresh air inlet.

In a twelfth aspect, a controller is provided for executing the solar heat pump hybrid drying method.

According to the solar heat pump hybrid drying system, the drying method, the drying device and the controller provided by the embodiment of the invention, the drying treatment process is completed by organically combining the heat exchange loops of the heat pump system and the solar heat exchange system, so that the drying performance can be effectively improved, the reliability of the system can be improved, and the pollution to the environment can be reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a solar heat pump hybrid drying system in an embodiment of the present application;

FIG. 2 is an engineering schematic diagram of a solar heat pump hybrid drying system in an embodiment of the present application;

fig. 3 is a first flowchart of a hybrid drying method using a solar heat pump in the embodiment of the present application;

fig. 4 is a flow chart of a solar heat pump hybrid drying method in the embodiment of the present application;

fig. 5 is a flow chart of a solar heat pump hybrid drying method in the embodiment of the present application;

fig. 6 is a fourth flowchart of a solar heat pump hybrid drying method in the embodiment of the present application;

fig. 7 is a flow chart of a solar heat pump hybrid drying method in the embodiment of the present application;

fig. 8 is a first structural schematic diagram of a solar heat pump hybrid drying device in the embodiment of the present application;

fig. 9 is a structural schematic diagram of a solar heat pump hybrid drying device in the embodiment of the present application;

fig. 10 is a schematic structural diagram of a solar heat pump hybrid drying device in the embodiment of the present application;

fig. 11 is a schematic structural diagram of a solar heat pump hybrid drying device in the embodiment of the present application;

fig. 12 is a schematic structural diagram of a solar heat pump hybrid drying device in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.