CN201467899U - Intelligent solar energy and air source heat pump dried meat drying system - Google Patents

Abstract

The purpose of the utility model is to propose a drying system with high energy efficiency, low investment, low operating cost, short drying time, energy saving, environmental protection and durability. The system includes a solar drying kiln body, which is equipped with a fan, a temperature sensor, a humidity sensor and an intelligent drying control device outside the kiln; in particular, an air source heat pump unit is also installed in the kiln body; the air source heat pump The circuit part of the unit is connected with the intelligent drying control device and is controlled by the intelligent drying control device. Because the system adopts a variety of clean energy sources for heating and drying at low temperature, the low-temperature dry air has a large hygroscopic capacity, which is more similar to the air environment in autumn, which protects the active ingredients in the material to the greatest extent, improves the drying quality, and makes "Guangzhou" The "style" preserved meat has well maintained the characteristics of color, aroma, taste and complete nutrition. The economy and market competitiveness of preserved meat products are improved.

Description

Intelligent solar energy and air source heat pump dried meat drying system

technical field

The utility model relates to a complete system for drying and processing cured meat.

Background technique

Drying is a must in the process of making preserved meat. The drying methods of existing cured meat mainly contain following several kinds: 1) solar energy and steam source drying; 2) solar energy and low temperature dehumidification drying; 3) solar energy and electric heating tube drying; 4) vacuum and microwave drying etc. The most commonly used method is solar energy and steam source drying. Although this method is effective, it requires a boiler, which is difficult to maintain, consumes a lot of energy, and is poor in environmental protection. The low-temperature dehumidification and drying temperature is low, the ventilation is not sufficient, and the acid value is high. Electric drying consumes a lot of energy. The initial investment of vacuum and microwave drying equipment is high, and the operating cost and maintenance cost are also high.

Contents of the invention

The purpose of the utility model is to propose a drying system with high energy efficiency, low investment, low operating cost, short drying time, energy saving, environmental protection and durability.

The utility model is achieved through the following technical solutions:

The intelligent solar energy and air source heat pump cured meat drying system includes a solar drying kiln body, the kiln body is equipped with a fan, a temperature sensor, a humidity sensor and an intelligent drying control device; in particular, an air source heat pump unit is also installed in the kiln body; The circuit part of the air source heat pump unit is connected with the intelligent drying control device and controlled by the intelligent drying control device.

In addition, electric heating pipes as auxiliary heating can also be installed in the kiln body.

The characteristics of each part are as follows:

Solar drying kiln body: store cured meat products to be dried. Its double-layer glass roof receives solar heat radiation to increase the temperature in the kiln. When there is no sun, the double-layer vacuum glass can effectively prevent the heat from dissipating in the kiln.

Temperature sensor, humidity sensor: complete the measurement of the ambient temperature and humidity changes in the solar drying kiln, and send it to the back-end intelligent drying control device.

Intelligent drying control device: intelligent control equipment using computer technology. It collects the data sent by the front end, and automatically sends out various control commands according to the user's settings, so that the drying process is in the best state. The content of the control command includes: the timing of starting the heating of the air source heat pump unit, the number of heating of the starting air source heat pump unit, the operation and reversing of the fan, the timing of dehumidification, the timing of starting the heating of the electric heating tube, the timing of stopping the machine after drying, etc. .

Fan: Complete the balanced transfer of heat in the kiln body, so that the temperature and humidity in the kiln body are balanced. The fan is preferably a high temperature axial flow fan.

Air source heat pump unit: The air source heat pump unit is the main heat source of the drying kiln.

Electric heating tube: auxiliary heating equipment, used for short-term compensation when the temperature demand in the kiln is relatively high or the external ambient temperature is low. The timing of starting or closing is automatically controlled by the intelligent drying control device to achieve the best drying/energy saving effect.

The intelligent solar energy and air source heat pump dried meat drying system makes full use of the advantages of abundant renewable clean energy solar energy and air heat sources, and supplemented by electric heating (mainly used for auxiliary heating in the early stage) to form a multi-heat source complementary heating to realize the drying of dried meat. to dry. Solar energy is mainly used to heat the kiln body during the daytime sunlight; the air source heat pump unit consumes part of the electric energy: on the one hand, it absorbs the energy (hot air) stored in the environmental medium through the evaporation cycle system to increase the heat release temperature of the cold medium and utilize it. On the other hand, recovering the exhaust heat of the drying system improves the working efficiency of the air source heat pump unit, reduces energy consumption, shortens the drying time, and reduces operating costs.

Because the system adopts a variety of clean energy sources for heating and drying at low temperature, the low-temperature dry air has a large hygroscopic capacity, which is more similar to the air environment in autumn, which protects the active ingredients in the material to the greatest extent, improves the drying quality, and makes "Guangzhou" The "style" preserved meat has well maintained the characteristics of color, aroma, taste and complete nutrition. The economy and market competitiveness of preserved meat products are improved.

Description of drawings

Fig. 1 is the plane structural representation of the utility model embodiment;

Fig. 2 is a circuit connection block diagram in the embodiment of the utility model.

Explanation of reference signs: 1-kiln body; 2-insulation layer; 3-top surface of double-layer vacuum glass; 4-first gate; 5-second gate; 6-air inlet; 7-air exhaust; 8-th 1st drying area; 9-second drying area; 10-first hot air circulation area; 11-second hot air circulation area; 12-first air source heat pump unit; 13-second air source heat pump unit; 14-high temperature axial flow Fan; 15-electric heating pipe; 16-humidity exhaust damper.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the content of the utility model is further described.

As shown in FIG. 1 , the cured meat drying system includes a brick kiln body 1 , and an insulating layer 2 is arranged in the wall of the kiln body 1 . A double-layer vacuum glass top surface 3 is arranged above the kiln body 1 to form a solar drying kiln body. In this embodiment, one side of the kiln body 1 is provided with a first door 4 and a second door 5 , and the other side is provided with an air inlet 6 and an air outlet 7 . The air inlet 6 and the air outlet 7 are respectively provided with humidity exhaust dampers 16 . The middle area of the kiln body 1 is divided into a first drying area 8 and a second drying area 9 ; the areas on both sides of the kiln body 1 are divided into a first hot air circulation area 10 and a second hot air circulation area 11 . The first air source heat pump unit 12 is arranged in the second hot air circulation area 11 near the air inlet 6, corresponding to the first drying area 8; the second air source heat pump unit 13 is also arranged in the second hot air circulation area 11, close to the exhaust The position of the tuyere 7 corresponds to the second drying zone 9 . In the first hot air circulation area 10 and the second hot air circulation area 11, there are also high-temperature axial flow fans 14, which are used to circulate the hot air in the kiln in the kiln body 1, which is not only conducive to making full use of the hot air, but also can make the heat distribution of the hot air uniform. The electric heat pipe 15 used as auxiliary heating is arranged on the blowing end of the high temperature axial fan 14 .

The air inlet and air outlet in this implementation are not strictly limited, they are only determined according to the circulation direction of the hot air in the kiln body. In this embodiment, the circulation direction of the hot air is counterclockwise, the air outlet facing the first air source heat pump unit 12 is the air inlet, and the air outlet facing the second air source heat pump unit 13 is the air outlet; if the circulation direction of the hot air is Clockwise, the positions of the above-mentioned air inlet and air outlet are opposite.

In addition to the above equipment, several temperature sensors and humidity sensors are distributed in the kiln body. At the same time, it also has an intelligent drying control device. As shown in Figure 2, the temperature sensor, humidity sensor, electric heating tube, high-temperature axial flow fan, humidity exhaust damper, and air source heat pump unit are all connected to the intelligent drying control device, which automatically controls the entire drying system.

The working process of the utility model is as follows: the material to be dried is hung in the first drying area 8 and the second drying area 9 . Sunlight passes through the double-layer vacuum glass top surface 3, making the temperature in the kiln body 1 rise. Set the relevant parameters of the intelligent drying control device to automatically control the air source heat pump unit, high temperature axial flow fan 14, humidity exhaust damper 16, and electric heating pipe 15, and the temperature sensor and humidity sensor will feed back the inside of the kiln body to the intelligent drying control device environmental data. The first air source heat pump unit 12 and the second air source heat pump unit 13 heat the outdoor air coming in through the air inlet 6 and send it to the drying area. The circulating flow between the hot air circulation zones air-dries the materials. In the early stage of drying, the air humidity in the kiln will be relatively high. The intelligent drying control device controls the opening or closing of the humidity exhaust damper 16 according to the circulation direction of the hot air in the kiln, so that the humid air in the kiln is exchanged with the dry air outside the kiln. The functions of the air inlet and the air outlet are interchanged when the direction of the axial flow fan is reversed, so that the indoor temperature and humidity are evenly distributed. During the exhaust process, the humid hot air will pass through the air source heat pump unit and be absorbed by the air source heat pump unit, thus achieving the purpose of energy saving. Especially when the ambient temperature outside the kiln is low. The electric heating tube 15 is used for short-time compensation when the temperature requirement in the kiln is relatively high or the external environment temperature is low. The hot air generated by the electric heating tube 15 also relies on the high-temperature axial flow fan 14 to make the hot air flow evenly in the hot air circulation area to play Compensation for the effect of the heat source. After finishing the whole drying process, stop the drying system and take out the product.

Air source heat pump technology utilizes the heat extracted from the heat source by the refrigeration compressor during the thermodynamic cycle. Since the thermal efficiency of the heat pump is as high as 300%-600% (related to the heat source and heating temperature), that is, the heat pump consumes 1kW of electric energy, and the user can get more than 4kW of heat, so the air source heat pump system is an energy-saving system. Compared with boiler (electricity, fuel) heating system, boiler heating can only convert 95%-98% of electric energy or 70%-95% of fuel internal energy into heat, and the heating efficiency of electric heating tube hot air is only 50%-70% % is converted into heat for users to use, so the use of heat pumps saves more than 3/4 of the electric energy compared with electric boiler heating, and saves more than 4/5 of energy compared with fuel boilers; whether it is in terms of operating costs or maintenance costs, heat pump systems are Can save costs. Guangzhou is located in the subtropical zone, the heat of the air is high and the heat lasts for a long time, so it is more advantageous to use an air source heat pump.

Utilizing renewable clean energy such as solar energy and air source heat pump to provide heating flexibly, drying preserved meat products is a new technology that protects the environment, saves conventional energy, and taps and utilizes renewable clean energy. The utility model adopts the intelligent drying control device of computer technology, which has precise measurement and stable heat supply control. The intelligent drying control device will automatically start the electric heating system to supply heat, so as to minimize the energy consumption and economic cost of the drying process of preserved meat products.

The embodiment is only the preferred implementation mode of the utility model, and all equivalent technical transformations made under the working principle and idea of the utility model all belong to the protection scope of the utility model.

Claims (6)

1. intelligent solar and air source heat pump cured meat and fish drying system comprise solar energy drying kiln body, and the cellar for storing things body is provided with blower fan, temperature sensor, humidity sensor and intelligent apparatus for control of drying; It is characterized in that: in the kiln body, also be provided with net for air-source heat pump units; The circuit part of described net for air-source heat pump units is connected with intelligent apparatus for control of drying, is controlled by intelligent apparatus for control of drying.

2. intelligent solar as claimed in claim 1 and air source heat pump cured meat and fish drying system is characterized in that: be provided with the electric heating tube as auxiliary heating in the kiln body.

3. intelligent solar as claimed in claim 1 or 2 and air source heat pump cured meat and fish drying system, it is characterized in that: the kiln body is provided with air inlet and exhaust outlet; The zone line of kiln body is divided into first dry section and second dry section; The areas at both sides of kiln body is divided into the first hot air circulation district and the second hot air circulation district; First net for air-source heat pump units is arranged on the position of close air inlet in the second hot air circulation district, corresponding first dry section; Second net for air-source heat pump units also is arranged in the second hot air circulation district, near the position of exhaust outlet, corresponding second dry section.

4. intelligent solar as claimed in claim 3 and air source heat pump cured meat and fish drying system is characterized in that: in the first hot air circulation district, the second hot air circulation district is provided with high-temperature axial flow fan.

5. intelligent solar as claimed in claim 1 or 2 and air source heat pump cured meat and fish drying system is characterized in that: be provided with heat-insulation layer in the wall body of kiln body.

6. intelligent solar as claimed in claim 1 or 2 and air source heat pump cured meat and fish drying system, it is characterized in that: the top of kiln body is provided with the dual-layer vacuum glass end face.

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