CN111189304A

CN111189304A - Heat pump drying equipment

Info

Publication number: CN111189304A
Application number: CN202010189811.6A
Authority: CN
Inventors: 王庆惠; 李�浩; 杨忠强; 闫圣坤; 朱占江; 阿布里孜·巴斯提
Original assignee: Agricultural Mechanization Research Institute Xinjiang Academy of Agricultural Sciences
Current assignee: Agricultural Mechanization Research Institute Xinjiang Academy of Agricultural Sciences
Priority date: 2020-03-13
Filing date: 2020-03-18
Publication date: 2020-05-22
Also published as: CN211903565U

Abstract

The invention relates to a heat pump drying equipment, which is characterized in that the heat pump drying equipment is composed of a control system, a heat pump main engine, an air inlet, a small fan, a feeding truck, a moisture exhaust port, a wind baffle, a large fan, an air duct and a house body. The air panel divides the drying room into two parts: the small fan and the feeder are located at the lower part of the air baffle, the large fan is fixed on the upper part of the air baffle, and the heat pump host is connected to the room body through the air duct and the air inlet. The invention provides an environmentally friendly, energy-saving and high-efficiency drying equipment, which has the characteristics of uniform color, strong fragrance, uniform shrinkage, high yield and fast drying speed for the dried materials, and greatly improves the commodity of the dried materials. It has broad application prospects.

Description

Heat pump drying equipment

Technical Field

The invention relates to the technical field of fruit and vegetable drying processing, in particular to heat pump drying equipment.

Background

In recent years, with the implementation of the policy of poverty removal and hardness attack, farmers in poverty-poor areas are enabled to be poverty-free and rich, and the policy is a target for vast cadres and farmers to struggle. In order to further expand poverty removal strength, exert local resource advantages and realize the poverty removal of farmers, the scale and yield of agricultural product planting industry increase year by year. The large amount of agricultural products brought to the market collectively brings great difficulty to the sale. Drying is an effective means for post-harvest processing of most agricultural products. In order to solve the outstanding problems of long drying time, great influence by climate, poor sanitary conditions, difficult guarantee of product quality and the like in the traditional natural airing, the fruit and vegetable drying room can be popularized and used in large area in Xinjiang, particularly in south Xinjiang. However, the volume and the loading capacity of the drying chamber of the fruit and vegetable drying room which is popularized and used are large, and the problems of uneven drying, large manual auxiliary strength and the like exist in the practical use. Therefore, the dried fruit and vegetable products after drying have low product yield and weak market competitiveness, and greatly inhibit the planting enthusiasm of farmers.

Disclosure of Invention

In order to solve the problems, the invention provides the heat pump drying equipment which is environment-friendly, energy-saving and high in efficiency, the dried material has the characteristics of uniform color and luster, strong fragrance, uniform shrinkage, high yield and high drying speed, the commodity of the dried material is greatly improved, and the heat pump drying equipment has a wide application prospect.

The invention achieves the above purposes by the following technical scheme: the provided heat pump drying equipment comprises a control system, a heat pump host, an air inlet, a small fan, a skip car, a moisture discharging port, a wind shield, a big fan, an air channel, a house body and the like, wherein the wind shield divides a drying chamber into an upper part and a lower part, the small fan and the skip car are positioned at the lower part of the wind shield, the big fan is fixed at the upper part of the wind shield, and the heat pump host is connected with the house body through the air channel and the air inlet.

The small fans are uniformly distributed on the baffle, and the number of the small fans is 6, 9 or 12.

The moisture-discharging port is positioned at the top of the house body.

The control system comprises a temperature and humidity sensor, an electric cabinet and a wind speed sensor, wherein the temperature and humidity sensor is fixed in the middle of the adjacent small fans and used for monitoring and controlling the temperature and the humidity in the drying chamber, the wind speed sensor is fixed in the center of the lower portion of the wind shield and used for monitoring and controlling the wind speed in the drying chamber, the control system controls the closing and the opening of the heat pump host, the moisture exhaust port and the air inlet according to the temperature and humidity sensor, and the control system controls the rotating speeds of the large fan and the small fans according to the wind speed sensor.

The skip car is positioned in the middle of the drying chamber, the distance between the skip car and the baffle is 20cm-80cm, and the distance between the skip car and the door is 20cm-150 cm.

The distance between the large fan and the end part of the wind shield is 50cm-150 cm.

The invention has the beneficial effects that: the heat pump is used as a heat source, an internal circulation type heat pump drying technology is utilized, heat energy in air can be converted into energy required by material heating, zero emission of pollutants is achieved, hidden danger of open fire drying is avoided, and the purposes of reducing energy consumption, protecting environment and being sanitary are achieved. A plurality of small fans are uniformly distributed on the wind shield, certain spaces are reserved between the skip car and the small fans and between the skip car and the door, so that air in the drying chamber is fully and uniformly mixed, hot air can uniformly blow over the surface of each layer of dried materials, and the purpose of improving the uniformity of the temperature, humidity and wind speed distribution of the whole machine is achieved. A plurality of small fans and large fans are distributed, so that smooth wind speed in the drying chamber is ensured, and the aim of improving the drying speed is fulfilled. Therefore, the material dried by the drying equipment has the characteristics of uniform color, strong fragrance, uniform shrinkage and high yield, greatly improves the commodity of the dried material, and has wide application prospect.

Drawings

Fig. 1 is a front view of a heat pump drying apparatus.

Fig. 2 is a top view of a heat pump drying apparatus.

Fig. 3 is a fan profile for a heat pump drying apparatus.

Detailed Description

The heat pump drying equipment shown in fig. 1, 2 and 3 comprises a control system, a heat pump main machine 2, an air inlet 3, a small fan 4, a skip car 5, a moisture discharging opening 6, a wind shield 7, a large fan 8, an air duct 9, a room body 11 and the like. The wind shield 7 divides the drying chamber 10 into an upper part and a lower part; the small fan 4 and the skip car 5 are positioned at the lower part of the wind shield 7; the small fans 4 are uniformly distributed on the baffle 15, and the number of the small fans 4 is 6, 9 or 12; the skip car 5 is positioned in the middle of the drying chamber 10, the distance between the skip car 5 and the baffle 15 is 20cm-80cm, and the distance between the skip car 5 and the door 12 is 20cm-150 cm; the large fan 8 is fixed on the upper part of the wind shield 7, and the distance between the large fan 8 and the end part of the wind shield 7 is 50cm-150 cm; the heat pump host 2 is connected with the room body 11 through the air duct 9 and the air inlet 3; the moisture discharging port 6 is positioned at the top of the house body 11; the control system is composed of a temperature and humidity sensor 14, an electric cabinet 1 and an air speed sensor 13, the temperature and humidity sensor 14 is fixed in the middle of the adjacent small fans 4 and used for monitoring and controlling the temperature and humidity in the drying chamber 10, the air speed sensor 13 is fixed in the center of the lower portion of the wind shield 7 and used for monitoring and controlling the air speed in the drying chamber 10, the control system controls the closing and opening of the heat pump host 2, the moisture exhaust port 6 and the air inlet 3 according to the temperature and humidity sensor 14, and the control system controls the rotating speeds of the large fans 7 and the small fans 4 according to the air speed sensor 13.

The working principle is as follows: the dried materials are evenly placed on the skip car 5, the heat pump drying equipment is started, the drying process is set according to the material characteristics, when the temperature in the drying chamber 10 is higher than the set temperature, the heat pump main machine 2 stops working, when the temperature in the drying chamber 10 is lower than the set temperature, the heat pump main machine 2 continues heating, and the steps are repeated until the drying is finished. When the humidity value in the drying chamber 10 is higher than the set humidity value, the moisture exhaust port 6 and the air inlet 3 are simultaneously opened, the damp and hot air in the drying chamber 10 is exhausted from the moisture exhaust port 6, the fresh air enters the drying chamber 10 from the air inlet 3, and when the humidity value in the drying chamber 10 is lower than the set humidity value, the moisture exhaust port 6 and the air inlet 3 are simultaneously closed until the drying is finished. Similarly, when the air speed value in the drying chamber 10 is lower than the set air speed value, the rotating speeds of the small fan 4 and the large fan 8 are increased, and when the air speed value in the drying chamber 10 is higher than the set air speed value, the rotating speeds of the small fan 4 and the large fan 8 are reduced until the drying is finished.

The specific drying process is as follows: the heat pump main machine 2 absorbs air in natural environment, the air is changed into air with higher temperature after running through the compressor, the air is sucked into the drying chamber 10 through the air inlet 3 under the action of the small fan 4, the air entering the drying chamber 10 evenly blows over the skip car 5 under the action of the small fan 4, and then returns to the heat pump main machine 2 through the air duct 9 under the suction action of the large fan 8, and circulating air is formed in such a way until drying is finished. And when the drying is finished, closing the heat pump drying equipment, taking out the material tray, and collecting, bagging and storing the dried material.

The above-described embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Obvious variations or modifications of the invention are possible within the scope of the invention.

Claims

1. The utility model provides a heat pump drying equipment is by control system, heat pump host computer (2), air intake (3), little fan (4), skip (5), hydrofuge mouth (6), deep bead (7), big fan (8), wind channel (9), the room body (11) etc. are constituteed, two parts about its characterized in that deep bead (7) falls into drying chamber (10), little fan (4) and skip (5) are located the lower part of deep bead (7), the upper portion at deep bead (7) is fixed in big fan (8), heat pump host computer (2) link to each other with the room body (11) through wind channel (9) and air intake (3).

2. A heat pump drying apparatus according to claim 1, characterised in that the blowers (4) are evenly distributed over the baffle (15).

3. A heat pump drying apparatus according to claim 1, wherein the moisture exhaust port (6) is located at the top of the room body (11).

4. The heat pump drying equipment according to claim 1, wherein the control system is composed of a temperature and humidity sensor (14), an electric cabinet (1) and an air speed sensor (13), the temperature and humidity sensor (14) is fixed in the middle of the adjacent small fan (4) and used for monitoring and controlling the temperature and humidity in the drying chamber (10), the air speed sensor (13) is fixed in the center of the lower portion of the wind shield (7) and used for monitoring and controlling the air speed in the drying chamber (10), the control system controls the closing and opening of the heat pump main machine (2), the moisture exhaust port (6) and the air inlet (3) according to the temperature and humidity sensor (14), and the control system controls the rotating speeds of the large fan (7) and the small fan (4) according to the air speed sensor (13).

5. The heat pump drying apparatus according to claim 1, wherein the skip car (5) is located in the middle of the drying chamber (10), the skip car (5) is spaced from the baffle (15) by 20cm to 80cm, and the skip car (5) is spaced from the door (12) by 20cm to 150 cm.

6. A heat pump drying apparatus according to claim 1, characterised in that the large fan (8) is located at a distance of 50cm to 150cm from the end of the wind deflector (7).

7. A heat pump drying apparatus according to claim 1 or 2, characterised in that the number of mini-fans (4) is 6, 9 or 12.