CN2359616Y - Fuel-oil warm air machine with preheating chamber - Google Patents

Abstract

The utility model relates to a fuel-oil warm air machine with a preheating chamber, which comprises a shell 1, a chimney 6, a warm air passage 5, a motor 3, a blower 4, a burning chamber and a burner, a heat exchanger 12 communicated with the burning chamber, a flue 2 and a burner, and an electric temperature control component. The fuel-oil warm air machine is characterized in that one side of the flue 2 of the shell 1 is connected with a preheating chamber 9 with a waste heat flue interface 11 of a waste heat flue 8 through the end of the flue 2; the bottom of the preheating chamber 9 is an air intake 10; the upper part of the preheating chamber 9 is communicated with a preheating air passage 7. The utility model has the advantages that the fuel-oil warm air machine can fully utilize heat energy; the heating efficiency is enhanced to more than 95% from 85%.

Description

A kind of fuel oil air-heater with preheating chamber

The utility model belongs to heater, especially for the heating that heats heating and middle-size and small-size public place of greenhouse, protection ground, herding livestock culture industry and the fuel oil air-heater that requires the drying of not too strict processing industry to use.

The fuel oil air-heater of prior art, the inlet scoop of its blower fan are directly to be communicated with atmosphere, and northerly winter, this was the main cause that causes the thermal efficiency lower because temperature is lower, and the cold air of suction need absorb more heat.Meanwhile, the chimney in the prior art directly is communicated with flue, has quite a few heat promptly to discharge air-heater without abundant exchange, also causes the waste of heat energy.Deficiency based on prior art exists has proposed the purpose of this utility model.

The purpose of this utility model is in order to overcome the deficiency that above-mentioned prior art exists, to design a kind of fuel oil air-heater with preheating chamber.To make full use of waste heat, improve the thermal efficiency, reach purpose of energy saving.

The purpose of this utility model realizes according to structure described below, this has the fuel oil air-heater of preheating chamber, mainly comprise housing 1, chimney 6, hot-flow flue 5, motor 8, blower fan 4, combustion chamber and burner, the heat exchanger 12 that is communicated with the combustion chamber, flue 2 and burner and electric and temperature control unit is characterized in that flue 2 one sides at housing 1 are that end by flue 2 connects the preheating chamber 9 with residual heat flue interface 11 of residual heat flue 8, in the bottom of preheating chamber 9 are air inlets 10, and the top of preheating chamber 9 is communicated with pre-hot-flow flue 7.

The utility model has the advantages that in the back of heat exchanger has increased by one section residual heat flue and preheating chamber again, and the flue gas (temperature is at 200-350 ℃) of directly discharging changes and walks residual heat flue 8 originally, and the temperature of preheating chamber 9 is raise.Cold air is before entering blower fan 4, and the air inlet through the preheating chamber bottom enters preheating chamber earlier, after the waste heat preheating in the preheating chamber, enters the suction inlet of blower fan again through pre-hot-flow flue from the top of preheating chamber, can make full use of the waste heat of chimney tail gas like this.In general, increased after the residual heat flue, the temperature of chimney outlet can be reduced to by original more than 300 degree centigrade about 70～90 degrees centigrade, and the thermal efficiency is also brought up to about 95% by original 85%.And the consumption of aspects such as other fuel oils does not increase.

The following drawings explanation, accompanying drawing 1 is the front view of the utility model from blower fan one lateral projection, and accompanying drawing 2 is the A-A cutaway views in the accompanying drawing 1, and accompanying drawing 3 is that B in the accompanying drawing 2 is to view.The called after of each sequence number in the accompanying drawings: 1, housing, 2, flue, 3, motor, 4, blower fan, 5, hot-flow flue, 6, chimney, 7, pre-hot-flow flue, 8, residual heat flue, 9, preheating chamber, 10, air inlet, 11, the residual heat flue interface, 12 heat exchangers.Therefore housing in the accompanying drawing and flue etc. are the panel beating product of thin plate, only express with an outline line, and the heat-insulation layer on the housing etc. are partly also not shown, does not influence structural framing of the present utility model, only this explanation.

Below in conjunction with the example structure in the accompanying drawing, describe structure of the present utility model in detail.With reference to accompanying drawing, the motor 3 in the structural design of the present utility model, blower fan 4, housing 1, hot-flow flue 5, burner and combustion chamber, flue 2 and heat exchanger 12 do not have essential difference substantially with normally used fuel oil air-heater.And its main distinguishing characteristics is flue 2 one sides at housing 1, and the residual heat flue interface 11 with residual heat flue 8 of end connection by flue 2 through the structural design of sealing, constitutes preheating chamber 9 around the residual heat flue 8.At the other end of residual heat flue 8, an interface similar substantially to interface 11 is also arranged, this interface is communicated with chimney 6.In the bottom of preheating chamber 9 are air inlets 10, and the top of preheating chamber 9 is communicated with pre-hot-flow flue 7.The inside of preheating chamber is in the bottom of chimney 6 and between the hot-flow flue 7 a semi-enclosed dividing plate is arranged in advance, force the cold air that enters from air inlet 10 along the arrow direction the accompanying drawing, be inhaled in the blower fan 4, derive from heating flue 5 through heat exchanger 12 again, heating that heats up such as greenhouses.Owing to adopted preheating chamber structure Design scheme, the outlet temperature of chimney 2 is reduced to about 60～90 degrees centigrade by original 200～350 degrees centigrade.Under the prerequisite that does not increase fuel oil, the thermal efficiency brings up to about 90～97% by original about 85%.If be used for the greenhouse, protection ground, booth etc. of plant husbandry, need when heating, use carbon dioxide, chimney 2 directly can be discharged in warmhouse booth.And, then chimney 2 must be connected to the chimney of smokejack in other occasions, row is to outdoor.

Claims (1)

1, a kind of fuel oil air-heater with preheating chamber, comprise housing 1, chimney 6, hot-flow flue 5, motor 3, blower fan 4, combustion chamber and burner, the heat exchanger 12 that is communicated with the combustion chamber, flue 2 and burner and electric and temperature control unit, it is characterized in that flue 2 one sides at housing 1 are that end by flue 2 connects the preheating chamber 9 with residual heat flue interface 11 of residual heat flue 8, is air inlets 10 in the bottom of preheating chamber 9, and the top of preheating chamber 9 is communicated with hot-flow flue 7 in advance.