CN2350688Y - Structurally improved fuel oil hot-air stove - Google Patents

Abstract

The utility model discloses a structurally improved oil-fired hot air stove, which mainly comprises a casing 1, a chimney 6, a hot air duct 5, a blower 4, a combustion device seat 14 on the outer of a combustion chamber, a heat exchanger 15 which is connected with the combustion chamber, etc. The utility model is characterized in that a residual heat flue 8 is let out between a flue 2 and the heat exchanger 15; the upper part of the casing has a layer of air preheating layer 10; the preheating layer enters a preheating flue 7 to be connected with the air inlet of the blower 4 through a preheating air inlet 9 on the position of the residual heat flue 8; the position of the air suction opening 11 of the preheating layer is provided with a baffle plate 12 for an air suction opening. The utility model has the advantages that heat energy is fully used in the utility model; the heat efficiency of the utility model is increased from 85% to more than 95%.

Description

A kind of warm air oil furnace that improves structure

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 warm air oil furnace that requires the drying of not too strict processing industry to use.

The warm air oil furnace 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 hot-blast stove 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 warm air oil furnace that improves structure.To make full use of waste heat, improve the thermal efficiency.

The purpose of this utility model realizes according to structure described below, this improves the warm air oil furnace of structure, comprise housing 1, chimney 6, hot-flow flue 5, motor 3, blower fan 4, burner seat 14 outside the combustion chamber, the heat exchanger 15 that is communicated with the combustion chamber, heat-insulation layer 13 between housing 1 and combustion chamber and the heat exchanger 15, and flue 2 and burner and electric and temperature control unit is characterized in that connecing between flue 2 and heat exchanger 15 and draw a residual heat flue 8, flue 2 is connected the tail end of residual heat flue 8, one deck air preheat layer 10 is arranged on the top of housing 1, and this preliminary heating zone enters the air inlet that pre-hot-flow flue 7 is connected to blower fan 4 by the pre-hot blast inlet 9 at residual heat flue 8 places, is provided with inlet scoop baffle plate 12 at 11 places, inlet scoop of preliminary heating zone.Structure described above has promptly realized the purpose of this utility model.

The utility model has the advantages that in the back of heat exchanger and increased by one section residual heat flue again, and be provided with before one deck preliminary heating zone cold air entering blower fan on the top of housing, earlier through preliminary heating zone, through the suction inlet that the passage that designing enters blower fan then through residual heat flue again from preliminary heating zone, 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 other consumption does not increase.

Description of drawings, accompanying drawing 1 is a front view of the present utility model, and accompanying drawing 2 is left views of accompanying drawing 1, and accompanying drawing 3 is that B in the accompanying drawing 1 is to view, in the accompanying drawing 1 analyse and observe the part be to analyse and observe according to the A-A shown in the accompanying drawing 2, in the accompanying drawing 2 analyse and observe the part be to analyse and observe according to the C-C in the accompanying drawing 1.The meaning of each numbering in the accompanying drawings is: 1, housing, 2, flue, 3, motor, 4, blower fan, 5, hot-flow flue, 6 chimneys, 7, pre-hot-flow flue, 8, residual heat flue, 9, pre-hot blast inlet, 10, air preheat layer, 11, the inlet scoop, 12, the inlet scoop baffle plate, 13, heat-insulation layer, 14 burner seats, the electric and temperature control unit in the accompanying drawing is not shown, burner is also not shown, and reason is that these all are to have used ripe conspicuous parts.In addition, because the housing of this hot-blast stove is the steel plate that approaches, owing to drawing ratio, section symbols does not in the drawings draw again.

Below in conjunction with the embodiment shown in the accompanying drawing, describe structure of the present utility model and use in detail.With reference to accompanying drawing, this improves the warm air oil furnace of structure, comprise housing 1, chimney 6, hot-flow flue 5, motor 3, blower fan 4, burner seat 14 outside the combustion chamber, the heat exchanger 15 that is communicated with the combustion chamber, heat-insulation layer 13 between housing 1 and combustion chamber and the heat exchanger 15, and flue 2 and burner and electric and temperature control unit is characterized in that connecing between flue 2 and heat exchanger 15 and draw a residual heat flue 8, flue 2 is connected the tail end of residual heat flue 8, one deck air preheat layer 10 is arranged on the top of housing 1, and this preliminary heating zone enters the air inlet that pre-hot-flow flue 7 is connected to blower fan 4 by the pre-hot blast inlet 9 at residual heat flue 8 places, is provided with inlet scoop baffle plate 12 at 11 places, inlet scoop of preliminary heating zone.During work, cold air is entered into the preliminary heating zone 10 on housing top earlier by the inlet scoop 11 with inlet scoop baffle plate 12, preliminary preheating, then through the pre-hot blast inlet 9 between preliminary heating zone 10 and the residual heat flue 8, enter air inlet that pre-hot-flow flue 7 arrives blower fans 4 under the drive of motor by combustion chamber and heat exchanger 15 forced heat-exchangings,, enter into and to heat or dry occasion after hot-flow flue 5 is discharged hot-blast stoves.Cold air illustrates with arrow in the accompanying drawings through the route of preheating, to help to understand and understand structure of the present utility model.Owing to adopted the design of preheating structure, the outlet temperature of chimney 2 is reduced to about 60～90 degrees centigrade by original 200～300 degrees centigrade.Under the prerequisite that does not increase fuel oil, the thermal efficiency brings up to about 90～97% by about 85%.If be used for 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 warm air oil furnace that improves structure, comprise housing 1, chimney 6, hot-flow flue 5, motor 3, blower fan 4, burner seat 14 outside the combustion chamber, the heat exchanger 15 that is communicated with the combustion chamber, heat-insulation layer 13 between housing 1 and combustion chamber and the heat exchanger 15, and flue 2 and burner and electric and temperature control unit, it is characterized in that connecing between flue 2 and heat exchanger 15 and draw a residual heat flue 8, flue 2 is connected the tail end of residual heat flue 8, and one deck air preheat layer 10 is arranged on the top of housing 1, this preliminary heating zone enters the air inlet that pre-hot-flow flue 7 is connected to blower fan 4 by the pre-hot blast inlet 9 at residual heat flue 8 places, is provided with inlet scoop baffle plate 12 at 11 places, inlet scoop of preliminary heating zone.