CN1099853C

CN1099853C - Roasting equipment and its heating method

Info

Publication number: CN1099853C
Application number: CN99116559A
Authority: CN
Inventors: 宫长荣; 潘建斌
Original assignee: Henan Agricultural University
Current assignee: Henan Agricultural University
Priority date: 1999-07-20
Filing date: 1999-07-20
Publication date: 2003-01-29
Anticipated expiration: 2019-07-20
Also published as: CN1280799A

Abstract

A baking equipment, including a cavity composed of an insulating wall, a door mounted on the insulating wall, a baking device placed in the cavity, an air distribution system, a heat pump heating system, a dehumidification system, and a heating system for controlling the heat pump and The controller of the dehumidification system, and the heat pump system is composed of a condenser installed in the cavity, a compressor installed outside the cavity, an evaporator installed outside the cavity, a connecting pipe connecting them, and a throttling device installed on the connecting pipe. The equipment makes the electrothermal conversion efficiency more than 1:4, and the equipment has the advantages of not polluting the environment and having high baking quality.

Description

A kind of roasting plant

The invention belongs to roasting plant, relate in particular to the roasting plant of tobacco leaf.

Tobacco leaf is a kind of important industrial crops of China, the plantation amount occupies first of the world, but conventional roasting plant is to carry out in the bakery of civil construction, use this roasting plant, not only flue cured tobacco quality is difficult to guarantee, and pollute the environment, be called in the CN2289394Y name for this reason and disclose a kind of burner that utilizes in " controlling barn automatically " with combustion oil, make the roasting plant of the interior air themperature raising of baking box in order to baking tobacco leaves, also be provided with automatic control system in this roasting plant, and heat exchanger, therefore the conventional roasting plant of this equipment has been saved the energy, but this equipment can not utilize the utilization of the low-temperature heat source of surrounding environment with raising heat energy, so energy-saving power is still not high.

The purpose of this invention is to provide a kind of flue cured tobacco quality can be guaranteed, and the lower-cost roasting plant of flue-cured tobacco.

The objective of the invention is to be achieved through the following technical solutions: this roasting plant comprises the cavity of being made up of heat insulation wall, be contained in the door on the heat insulation wall and place the interior apparatus for baking of cavity, divide wind system and heat pump heating system, dehumidification system and be used to control the controller of heat pump heating system and dehumidification system, the compressor of heat pump linked to each other with condenser by communicating pipe, condenser is connected with the throttling arrangement that is contained on communicating pipe, throttling arrangement is connected with evaporimeter, evaporimeter is by also linking to each other with compressor communicating pipe, condenser in the heat pump and compressor are contained within the cavity, evaporimeter is contained in outside the cavity, and the blower fan in the branch wind system is contained in a side of condenser.

Because the operation principle of heat pump is according to thermodynamics second theorem in this roasting plant, promptly evaporimeter sucks the compressed machine acting of low-temperature heat quantity around cavity, pumps in the cavity, and electric heating conversion efficiency is reached more than 1: 4.Tobacco leaf goes to toast with these heat, will reduce greatly than the employing fuel cost, and does not pollute the environment.Because the baking of tobacco leaf is to carry out in closed environment, baking temperature and humidity are controlled by controller, so this equipment can improve the baking quality of tobacco leaf greatly.

Be described further below in conjunction with accompanying drawing and embodiment.

Fig. 1 is embodiment 1 structural representation;

Fig. 2 is embodiment 1 a heat pump structural representation;

Fig. 3 is for having the schematic diagram of temperature, humidity control among the embodiment 1;

Fig. 4 is the structural representation of embodiment 2.

Embodiment 1: formed cavity 5 by heat insulation wall 1, this heat-insulation layer 1 is to fix thermal insulation board on the metal framework, on the heat insulation wall 1 of cavity 5 one sides, feeding gate 3 is housed, the feeding gate periphery is equipped with strip of paper used for sealing 4 to seal, most of space of cavity 5 is a baking vessel 5 ', the apparatus for baking that is equipped with in the baking vessel 5 ' is a baking rack 2, and the baking rack in the present embodiment is many rows' an extension pole, and it is 75cm that upper and lower two rows hang the pole distance.

The split-wind plate 6 of branch wind system is housed in the bottom of baking rack 2, dehumidifier 12 and drip tray 11 in condenser 7, compressor 9 and the dehumidification system in the heat pump are housed in the cavity of baking vessel's another side, and the drainpipe 13 that is connected with drip tray, drainpipe 13 has " U " type part, and the delivery port 13 ' of drainpipe 13 is opened outside cavity 5.Evaporimeter 14 is contained in outside the cavity 5 in the heat pump, condenser and compressor are contained within the cavity, compressor 9 in heat pump is by linking to each other with condenser 7 communicating pipe 16, condenser 7 is connected with the throttling arrangement that is contained on communicating pipe, throttling arrangement is connected with evaporimeter 14, and evaporimeter 14 is by also linking to each other with compressor 9 communicating pipe 16.In the communicating pipe 16 of connection heat pump the R142b cold-producing medium is housed, the throttling arrangement between communicating pipe 16 is an expansion valve 19.

The blower fan 8 of branch wind system is contained in a side of condenser 7, so that heat is blowed in the baking vessel 5 '.

KY-3 type micro computer temperature and humidity control instrument is used to control the temperature and humidity in the casing.

Side at baking rack 2 is provided with dividing plate 15.

Condenser 7 in the present embodiment, blower fan 8, compressor 9 are contained on the installing plate 18, and roller 17 is equipped with in installing plate 18 bottoms, near the open gate 10 that makes the equipment turnover is housed on the heat insulation wall 1 of these parts, when parts break down, open open gate 10, pull out installing plate 18, can keep in repair.

The method of this equipment of utilization baking tobacco leaves is: tobacco leaf is hung on the baking rack 2, close feeding gate, and adopt the concentrated type baking.Connect power supply, each system works of roasting plant, tobacco leaf toasts by the heat of high temperature of being emitted by heat pump.The tobacco flue-curing temperature is that humidity is 95%-30% between the room temperature to 70 ℃.

Embodiment 2: heat insulation wall 1 adopts brick forming in the present embodiment, the condenser 7 of heat pump, compressor 9 and blower fan are fixed in the casing 20 of band through hole, casing 20 is packed in the top of cavity 5, blower fan is blown down heat from cavity top, be used for baking tobacco leaves, split-wind plate is contained in cavity 5 tops but under blower fan.In the heat pump in communicating pipes 16 cold-producing medium of adorning be R114, throttling arrangement between communicating pipe is a capillary, a feeding gate 3 is only arranged on the cavity 5, dehumidification system among this embodiment is made up of exhaust outlet 21 and air inlet 22, ventilating fan 21 ' is equipped with at 21 places at exhaust outlet, exhaust outlet 21 is opened the bottom at this roasting plant, air inlet 22 is opened the top at this equipment, the automatic opening door that links with humidity controller all is equipped with at exhaust outlet 21 and air inlet 22 places, and the humidity in the roasting plant is coordinated to open by exhaust outlet 21 and air inlet 22 and ventilating fan and guaranteed.Other structures are identical with embodiment 1 with mounting means.

The baking method of tobacco leaf is identical with embodiment 1.

Embodiment 3: in the present embodiment, baking support component 2 netted pallets, the cold-producing medium of adorning is R124 in communicating pipe 18, two cover dehumidification systems are arranged in the present embodiment, promptly increase by a cover dehumidification system on the basis of embodiment 1 structure, its exhaust outlet 21, air inlet 22 are opened on the sidewall of heat insulation wall.

Adopt during tobacco flue-curing and heap on pallet, additive method is identical with embodiment 1.

This roasting plant also can be used for the baking of other article such as vegetables, medicinal material, food.

The used temperature of the present invention, humidity controller can also adopt KY-1 type or KY-2 type micro computer temperature, humidity controller, and other forms of temperature, humidity controller device.

Claims

1. A baking equipment, including a cavity composed of an insulating wall, a door mounted on the insulating wall, a baking device placed in the cavity, an air distribution system and a heat pump heating system, a dehumidification system and a heating system for controlling the heat pump The controller of the system and the dehumidification system is characterized in that: the compressor of the heat pump system is connected to the condenser through a communication pipe, the condenser is connected to the throttling device installed on the communication pipe, the throttling device is connected to the evaporator, and the evaporation The condenser is also connected to the compressor through a connecting pipe. The condenser and compressor in the heat pump system are installed inside the cavity, the evaporator is installed outside the cavity, and the fan in the air distribution system is installed on one side of the condenser.

2. The baking equipment according to claim 1, characterized in that: the dehumidification system is composed of a dehumidifier, a water receiving tray and a drain pipe connected thereto, and the dehumidifier and the water receiving tray are installed in the cavity to drain water The outlet of the tube extends out of the cavity; the baking device is a multi-row hanging rod.

3. The baking equipment according to claim 1, characterized in that: the condenser, the fan and the compressor are installed on the mounting plate near the lower part of the cavity, the bottom of the mounting plate is equipped with rollers, and the insulation wall close to these parts is installed There are access doors to allow equipment to enter and exit.

4. The baking equipment according to claim 1, characterized in that: the condenser, the fan and the compressor are fixed in a box with through-holes, and the box is fixed on the top of the cavity.

5. The baking equipment according to claim 1, characterized in that: the dehumidification system in the baking equipment consists of a dehumidifier installed in the cavity, a water receiving tray placed at the lower part of the dehumidifier, and a Composed of drain pipes, the outlet of the drain pipe protrudes out of the cavity, the top of the baking equipment is provided with an air outlet, and the bottom is provided with an air inlet.

6. The baking equipment according to claim 1, 2 or 3, characterized in that the refrigerant contained in the communication pipe in the heat pump system is 142b or R114 or R124.