CN201388509Y - A solar continuous heating drying equipment - Google Patents

Abstract

The utility model is a solar continuous heating type drying equipment, which includes a drying room, a material frame is arranged in the drying room, and an air inlet interface of the drying room is arranged under the drying room; a blower, a control valve, and a V-shaped plate set arranged obliquely are also included. Heater, the V-shaped plate heat collector is provided with a thermal insulation water tank; the air inlet end of the blower is connected to the atmosphere, the air outlet end is connected to the inlet of the control valve, and the first outlet of the control valve is connected to the V-shaped plate heat collector. The V-shaped plate heat collector is equipped with a conductive hot air channel, and the air outlet of the heat collector is connected to the air inlet port of the drying chamber; the second outlet of the control valve is connected to the drying chamber through a serpentine air pipe. The air inlet interface is connected, and the serpentine air pipe is set in the heat-insulating water tank. The heat-insulating water tank is connected to the hot water pipe in the V-shaped plate collector through the water pipe. The heat-insulating water tank and the hot water pipe form a circulating water channel. The utility model can continuously supply heat, has low cost, simple structure and high heat utilization efficiency.

Description

A solar continuous heating drying equipment

technical field

The utility model belongs to the field of crop processing machinery, in particular to equipment for drying food crops by using solar energy.

Background technique

In the industry of food drying, especially the drying of Cantonese-style dried fruits, natural sun drying and greenhouse drying are mainly used in China. The time required for natural sun drying is too long. Greenhouse drying can shorten the drying time, but it also cannot To achieve continuous operation, foreign related solar food drying equipment has natural convection and forced convection drying equipment, but there are common problems that continuous drying cannot be achieved and waste gas is not recycled, resulting in waste of heat energy.

In the domestic prior art about food drying equipment, Chinese Invention Patent Publication No. CN101086423A, an additional energy drying device for solar drying equipment, discloses a drying equipment using solar energy. An electric heating section composed of a curved air pipe and an electric heater is installed at the lower end of the pipe, and several combustion heaters that can use coal, fuel oil, gas or crop straw are added under the hot water storage tank of the collector hot air drying system. The device can realize drying operation in cloudy days, and enable the solar drying equipment to realize continuous drying operation around the clock. The technical solution needs to set up two kinds of heat collectors, the plate heat collector and the heat collector, the cost is high and the structure is complicated; in addition, the function of waste heat recovery is not considered; in terms of structure, the volume of the drying chamber is affected by the height of the heat collector Limitation is not conducive to the increase of drying room space.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and design a solar continuous heating drying equipment capable of continuous heating, low cost, simple structure and high heat utilization efficiency.

In order to achieve the above purpose, the utility model includes the following technical solutions: a solar continuous heating drying equipment, including a drying room, a material frame is arranged in the drying room, and an air inlet port of the drying room is arranged under the drying room; it also includes a blower, a control Valve, inclined V-shaped plate heat collector, and the V-shaped plate heat collector is equipped with a thermal insulation water tank;

The air inlet end of the blower is connected to the atmosphere, the air outlet end is connected to the inlet of the control valve, the first outlet of the control valve is connected to the air inlet of the V-shaped plate heat collector, and the V-shaped plate heat collector is provided with a conductive hot air The channel, the air outlet of the V-shaped plate collector is connected with the air inlet interface of the drying chamber;

The second outlet of the control valve is connected to the air inlet port of the drying chamber through a serpentine air pipe, and the serpentine air pipe is arranged in the heat-insulating water tank, and the heat-insulating water tank is connected to the hot water pipe in the V-shaped plate heat collector in turn through the water pipe , the thermal insulation water tank and the hot water pipe form a circulating water channel.

The V-shaped plate heat collector is composed of several V-shaped heat-collecting units arranged in a plane; the top of the V-shaped heat-collecting unit is provided with a hot water pipe, and the upper surface of the V-shaped heat-collecting plate is provided with a vacuum glass layer. The lower surface of the V-shaped heat collecting plate is provided with an insulating layer, and the upper and lower passages formed by the vacuum glass layer, the insulating layer and the V-shaped heat collecting unit are hot air passages.

In order to ensure the normal operation of the V-plate collector and absorb solar energy more effectively, the inclination between the V-plate collector and the plane is 31°~37°

The air inlet of the V-shaped plate heat collector is provided with an air filter.

In order to make full use of the hot air passing through the drying chamber, so as not to discharge it in vain, a heat exchanger for preheating the inlet air is connected between the blower and the control valve, and the heat source inlet of the heat exchanger is connected to the drying chamber , the heat source outlet of the heat exchanger is the exhaust port of the drying chamber.

In order to realize automatic control, the control valve is connected with an automatic control component, and the automatic control component includes a temperature and humidity sensor.

Furthermore, the temperature and humidity sensor is located in the drying room.

In order to heat the water in the heat-insulating and heat-preserving water tank in bad weather and long-term rainy days, the electric heating wire connected with the automatic control unit for auxiliary heating is arranged in the heat-insulating and heat-preserving water tank.

In order to save space and improve heat utilization, the material frames are stacked.

The upper end of the drying chamber is provided with an inclined surface, and the drying chamber is connected with an exhaust chimney.

Compared with the prior art, the utility model has the following remarkable effects: First, the utility model realizes that the general solar water heater plate heat collector is transformed into a V-shaped plate heat collector, and the heat collector is ventilated up and down on the V-shaped plate, collecting The air outlet of the heater is connected to the air inlet port of the drying chamber, and the heat-insulating water tank is connected to the water pump in turn through the water pipe, and the hot water pipe in the collector forms a circulating water channel, which realizes the combination of the hot air drying system and the solar energy storage system. Low, simple structure. In addition, since a heat exchanger for preheating the inlet air is connected between the blower and the control valve, the heat source inlet of the heat exchanger is connected to the drying chamber, and the heat source outlet of the heat exchanger is the exhaust port of the drying chamber, realizing Make full use of the hot air in the drying room before it is discharged; the utility model is also equipped with a temperature and humidity sensor and a heating wire, which has the characteristics of intelligent control, and meets the requirements of drying food such as preserved fruits in the south's unique long-term rainy weather. Require.

Description of drawings

Fig. 1 is the front three-dimensional structure schematic diagram of the utility model;

Fig. 2 is a schematic diagram of the back stereoscopic structure of the utility model;

Fig. 3 is the internal structural diagram of the V-shaped plate heat collector of the present utility model;

Fig. 4 is a schematic perspective view of the thermal insulation water tank of the present invention.

Detailed ways

The utility model relates to a solar energy continuous heating type drying equipment, which can continuously supply heat, has low cost, simple structure and high heat utilization efficiency. Fig. 1 is the three-dimensional structure schematic diagram of the present utility model, and Fig. 2 is the back three-dimensional structure schematic diagram of the present utility model; Air pipe 4, third air pipe 12, first water pipe 5, second water pipe 15, V-shaped plate heat collector 6, blower 7, control valve 9, heat exchanger 11, electric heating wire 13, serpentine pipe 14, Thermal insulation water tank 16, temperature and humidity sensor 17, exhaust chimney 18.

The drying chamber 1 of the utility model is provided with a material frame 2, in order to save space and improve the heat utilization rate, the material frame 2 is stacked; the drying chamber 1 is provided with a drying chamber air inlet interface 3, and the drying chamber The air interface 3 is detachable, which is convenient for installation and maintenance; the drying chamber 1 is also equipped with a blower 7, a control valve 9, a V-shaped plate heat collector 6 set at an inclination of 30° to 37° from the horizontal plane, and a thermal insulation water tank 16.

The air inlet end of the blower 7 is connected to the atmosphere, the air outlet end is connected to the inlet of the control valve 9, the first outlet of the control valve 9 is connected to the air inlet of the V-shaped plate heat collector 6, and the V-shaped plate heat collector 6 is equipped with There is a conductive hot air passage 65, and the air outlet of the heat collector is connected to the air inlet port 3 of the drying chamber; the second outlet of the control valve 9 is connected to the air inlet port 3 of the drying chamber through a serpentine air pipe 14, and the serpentine air The pipe 14 is arranged in the thermal insulation water tank 16, and the thermal insulation water tank 16 is sequentially connected to the hot water pipe 61 in the V-shaped plate heat collector 6 through the water pipe, and the thermal insulation water tank 16 and the hot water pipe 61 form a circulating water channel.

Fig. 3 is an internal structure diagram of the V-shaped plate heat collector of the present invention. The V-shaped plate heat collector 6 is composed of several V-shaped heat-collecting units 62 arranged in a plane; Vacuum glass layer 63, the bottom surface of V-shaped heat collector plate 6 is provided with insulation layer 64, and the upper and lower passages formed by vacuum glass layer 63 and insulation layer 64 with V-shaped heat collection unit 62 are hot air passages 65. The wind can flow along the air inlet of the V-shaped plate heat collector 6 , the hot air passage 65 , the air outlet of the V-shaped plate heat collector 6 , and the air inlet interface 3 of the drying chamber, and be heated in the hot air passage 65 .

Fig. 4 is the perspective structure diagram of the thermal insulation water tank of the present invention, the second outlet of the control valve 9 is connected with the air inlet port 3 of the drying chamber through a serpentine air duct 14, the second air duct 4, the serpentine air duct 14 is set In the heat-insulating water tank 16, the heat-insulating water tank 16 is sequentially connected through the first water pipe 5, the hot water pipe 61 in the V-shaped plate heat collector 6, and the second water pipe 15 to form a circulating water channel. Water rises, and the principle that cold water descends circulates automatically, and the thermal insulation water tank 16 should be placed on the V-shaped plate heat collector 6 tops. Otherwise a water pump is required. The wind can flow along the serpentine air duct 14 and the air inlet port 3 of the drying chamber, and be heated in the serpentine air duct 14, because during the day when the temperature in the drying chamber exceeds the required temperature, the control valve 9 is automatically opened to make the waterway Circulation is carried out to store heat energy in the water tank. At night, the control valve of the serpentine air duct is opened, and the blower blows air through the air duct to dry the materials in the drying room.

The innovation of this utility model is also that, in order to make full use of the hot air passing through the drying chamber so as not to discharge it in vain, a heat exchange device for preheating the inlet air is connected between the blower 7 and the control valve 9. The heat source inlet of the heat exchanger 11 is connected to the drying chamber 1, and the heat source outlet of the heat exchanger 11 is the exhaust port of the drying chamber 1. Specifically, on the top of the drying chamber 1, or on the exhaust chimney 18 at the top of the drying chamber 1, a third air pipe 12 is provided, and the third air pipe guides the hot air at the top of the drying chamber 1 down and enters the heat exchanger 11. The heat source inlet of the drying chamber is discharged through the heat source outlet of the heat exchanger 11. Inside the heat exchanger 11 is the air pipe connected between the blower 7 and the control valve 9, so that the hot air discharged from the drying chamber is completely exhausted before the inlet air is exhausted. Preheating, the heat utilization efficiency is greatly improved.

In order to realize automatic control, the control valve 9 is connected with an automatic control component, and the automatic control component includes a temperature and humidity sensor 17 , further, the temperature and humidity sensor 17 is arranged in the drying room 1 . Specifically, the automatic control part is a common single-chip microcomputer control unit, which realizes the automatic control function of the control valve 9, and the temperature and humidity sensor 17 is also connected with the automatic control part, and inputs the sensed temperature and humidity signal to control the control valve 9. In the working state, in order to heat the water in the heat-insulating water tank 16 in bad weather and long-term rainy days, the heat-insulating water tank 16 is provided with an electric heating wire 13 connected with an automatic control unit.

The working principle of the utility model is: during the daytime drying process, the air is preheated from the blower 7 through the heat exchanger 11, and enters the bottom of the V-shaped plate heat collector 6 through the control valve 9 and the first air pipe 8, and the V-shaped plate heat collector 6 Internal ventilation, the air outlet of the V-shaped plate heat collector 6 is connected to the air inlet port 3 of the drying chamber, the air enters the drying chamber 1 to dry the materials in the material frame 2, and finally is discharged from the third air pipe 12 and enters the heat source of the heat exchanger 11 Inlet, and discharged through the heat source outlet of heat exchanger 11, inside the heat exchanger 11 is the air pipe connected between the blower 7 and the control valve 9, so that the hot air discharged from the drying chamber can preheat the inlet air before it is completely discharged , the above system constitutes a daytime hot air drying system.

At the same time, the V-shaped plate in the V-shaped plate heat collector 6 also stores heat in the heat-insulating water tank 16 through the first water pipe 5 and the second water pipe 15 during the day, forming a solar energy storage system.

In the nighttime hot air drying system, the air passes through the heat exchanger 11 from the blower 7, the temperature and humidity sensor 17 senses and controls the control valve 9 to open, and the air passes through the serpentine pipe 14 in the heat-insulating water tank 16, passes through the second air pipe 4, and the air inlet port of the drying chamber 3 Enter the drying chamber 1 to dry the material in the material frame 2, and finally discharge the imported air from the third air pipe 12 and preheat it through the heat exchanger 11. Electric heating wire 13 heats water in the thermal insulation water tank 16 when the weather is not good, and the system drying process is similar to the hot air drying process at night.

The control principle of the control unit is: during the daytime drying process, the wind is heated from the bottom of the V-shaped plate heat collector 6 and enters the drying chamber 1 for drying, and the discharged hot air is preheated by the small heat exchanger 11. When the drying chamber 1 When the internal temperature is too high, the control valve 9 will open, and the water will be heated by the water pump through the V-shaped plate to collect the heat and store it in the heat-insulating water tank 16; At the air inlet of the plate collector 6, the wind is heated by the serpentine air duct 14 in the water tank and enters the drying chamber 1, and then it is similar to the drying process during the day; when the day restarts, the control unit drives the control valve 9 to close the serpentine air duct 14 Open the air inlet, open the air inlet 6 of the V-shaped plate heat collector, and start the hot air drying process of the heat collecting plate, and the hot water storage tank can start to store heat energy again, and the cycle is repeated to achieve continuous drying operation; when the weather condition is not good, the water tank can be used The electric heating wire 13 heats the water, and realizes the hot air drying process through the serpentine air duct 14.

Claims (10)

1, a kind of solar energy continuous heat supply type drying apparatus comprises hothouse (1), is provided with material frame (2) in the hothouse (1), and hothouse (1) has hothouse air intake interface (3); It is characterized in that: also comprise air blast (7), control valve (9), the V-type plate heat collector (6) that is obliquely installed, described V-type plate heat collector (6) is provided with adiabatic heat-insulation water tank (16);

Described air blast (7) air intake communicates with atmosphere, outlet air end is connected with the import of control valve (9), first outlet of control valve (9) is connected with V-type plate heat collector (6) air inlet, be provided with the hot-air channel (65) of conducting in the V-type plate heat collector (6), V-type plate heat collector (6) air outlet is connected with hothouse air intake interface (3);

Second outlet of described control valve (9) is connected with hothouse air intake interface (3) by snakelike airduct (14), snakelike airduct (14) is located in the adiabatic heat-insulation water tank (16), adiabatic heat-insulation water tank (16) connects the interior hot-water line (61) of V-type plate heat collector (6) successively by water pipe, and described adiabatic heat-insulation water tank (16) forms the circulation waterway passage with hot-water line (61).

2, solar energy continuous heat supply type drying apparatus according to claim 1 is characterized in that: described V-type plate heat collector (6) is to be made of some V-type thermal-arrest unit (62) that are planar alignment; The top of V-type thermal-arrest unit (62) is provided with hot-water line (61), thermal-arrest plate (6) upper surface of V-type is provided with vacuum glass layer (63), thermal-arrest plate (6) lower surface of V-type is provided with heat-insulation layer (64), and vacuum glass layer (63) and heat-insulation layer (64) are hot-air channel (65) with the last lower channel that V-type thermal-arrest unit (62) forms.

3, solar energy continuous heat supply type drying apparatus according to claim 2 is characterized in that: V-type plate heat collector (62) is 31 °～37 ° with the gradient on plane

4, solar energy continuous heat supply type drying apparatus according to claim 3 is characterized in that: the air inlet of described V-type plate heat collector (6) is provided with air cleaner.

5, solar energy continuous heat supply type drying apparatus according to claim 1, it is characterized in that: be connected with the heat exchanger (11) that inlet air is carried out preheating between described air blast (7) and the control valve (9), the thermal source import of heat exchanger (11) is connected with hothouse (1), and the thermal source outlet of heat exchanger (11) is the hothouse exhaust outlet.

6, solar energy continuous heat supply type drying apparatus according to claim 1 is characterized in that: described control valve (9) is connected with automatic control component, and described automatic control component comprises humiture inductor (17).

7, solar energy continuous heat supply type drying apparatus according to claim 6 is characterized in that: described humiture inductor (17) is located at hothouse (1).

8, solar energy continuous heat supply type drying apparatus according to claim 1 is characterized in that: be provided with the electrical heating wire (13) that is used for auxiliary heating that is connected with automatic control component in the described adiabatic heat-insulation water tank (16).

9, according to each described solar energy continuous heat supply type drying apparatus of claim 1～8, it is characterized in that: described material frame (2) is stacked setting.

10, solar energy continuous heat supply type drying apparatus according to claim 9 is characterized in that: described hothouse (1) upper end is provided with an inclined plane, and hothouse (1) is gone up and connected exhaust chimney (18).

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