CN2415308Y

CN2415308Y - Air heater

Info

Publication number: CN2415308Y
Application number: CN 00203808
Authority: CN
Inventors: 刘文栋; 石忠义; 王学耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-16
Filing date: 2000-02-16
Publication date: 2001-01-17
Anticipated expiration: 2010-02-16

Abstract

The utility model relates to an air heater, which is used for the heating of a greenhouse in agricultural. The utility model is composed of a jacketed chimney (1), a preheating chamber (2), a three-pass heat exchange chamber box (3), a preheating air outlet (4), a combustion supporting vent port (5), a preheating air inlet (6), a fine water column humidifier (7), a hot air outlet (8), a blower (9), and a combustion chamber (10). The utility model has the advantages that the heat efficiency is high, the cost is low, the installation and the operation are convenient, and the concentration and the humidity of CO < 2 > in the greenhouse can be ensured.

Description

Air-heater

The utility model relates to a kind of air-heater.

Air-heater is mainly used in the heating of agricultural greenhouse (or hot house).Present agriculture hot house heating has following several method: the one, at booth one end a coal stove is set, and the sensible heat of flue gas is dissipated in the booth by earthenware, this method thermal efficiency is low, and thermic load is difficult to improve; Another kind method is to place radiator (being radiator) in booth, and the hot-water boiler of Natural Circulation or forced circulation is set outside booth, and this method cost height is difficult to the air quality that guarantees that plant growth is required, and air seldom upgrades, the CO that is absorbed by photosynthesis ₂Can't in time replenish, for this reason, have to improve CO by the method for timing " leaking informaton " (promptly with the hot-air in the outdoor cold air displacement canopy) ₂Concentration, " leaking informaton " must cause a large amount of losses of heat in the booth.

The purpose of this utility model is to develop a kind of thermal efficiency height, cost is low, easy to install and can guarantee CO in the greenhouse ₂The air-heater of concentration and humidity.

The object of the present invention is achieved like this: fresh cold air is by the flue gas indirect heat exchange of air-heater of the present utility model and high temperature, and the fresh hot air after being heated directly is blown into warmhouse booth.

Embodiment accompanying drawings of the present utility model is as follows:

Fig. 1 is the structural representation of air-heater.

Fig. 2 is the A-A cutaway view of Fig. 1.

Add shown in the figure, 1 chimney for the strap clamp cover, 2 for giving the hot cell, and 3 is three backhaul heat exchange box, and 4 for giving hot-blast outlet, and 5 is the combustion-supporting ventilating opening, and 6 for giving the hot blast import, and 7 is thin water column humidifier, and 8 is hot-blast outlet, and 9 is blower fan, and 10 is the combustion chamber.

Chimney 1 is positioned at the top of air-heater, its central tube communicates with three backhaul heat exchange box 3, its chuck with give hot cell 2 and link to each other, be provided with in the bottom of giving hot cell 2 and give hot-blast outlet 4, the inlet of blower fan 9 links to each other with the outlet 4 of giving hot blast, and the outlet of blower fan 9 links to each other with the import 6 of giving hot blast, thin water column humidifier 7 is set in the pipe that gives hot blast import 3, spray into a certain amount of water smoke at this, make air humidification, be beneficial to the growth of plant.The air that gives after the ventilating opening 7 of hot-air through being located at 10 bottoms, combustion chamber enters fraction and give heat behind the humidification is used for combustion-supporting, coal or oil firing generate the flue gas of high temperature in combustion chamber 10, high-temperature flue gas links to each other with the central tube of chimney 1 through the standpipe of three backhaul heat exchange box 3, pipe is outer to be divided into three backhauls, gives being blown into warmhouse booth by two hot-blast outlets 8 after most of air after the heat is heated to rated temperature.

Described combustion chamber 10 can be coal furnace or oil burner.

The apparent advantage of the utility model is as follows:

1. heated airborne CO₂Identical in concentration and the atmosphere is conducive in the warmhouse booth The photosynthesis of crop.

2. regulate the humidification amount of giving hot-air, guarantee that crop grows in the air humidity of the best.

3. adopt chuck to give heat, hot blast is combustion-supporting, and three backhaul heat exchange have improved the thermal efficiency of air-heater greatly.

4. this air-heater is simple in structure, is convenient to make, installs, uses, and greatly reduces the cost of air-heater.

5. automatic banking after the outage blowing-out has prolonged service life of air-heater.

Claims

1. air-heater, it by chimney, give hot cell, heat exchange box, air ports, blower fan and combustion chamber and constitute, it is characterized in that described combustion chamber is three backhaul combustion chambers.

2. air-heater as claimed in claim 1 is characterized in that described giving in the hot blast inlet tube is provided with humidifier.

3. air-heater as claimed in claim 1 is characterized in that described combustion chamber is provided with hot combustion air inlet.