CN2286519Y

CN2286519Y - Gas range with preheating device

Info

Publication number: CN2286519Y
Application number: CN 96224531
Authority: CN
Inventors: 李焕新
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-01
Filing date: 1996-09-01
Publication date: 1998-07-22
Anticipated expiration: 2006-09-01

Abstract

The utility model relates to a gas range with preheating device. Because a new added preheater can recover thermolysis and fume afterheat and can preheater combustion air, so the effects that combustion temperature and heat efficiency are improved can be achieved. Cold air enters a heat exchanger (1) from the entrance of the cold air (2), at the time of being expelled from a gas passage, flue gas exchanges heat with the internal air of the heat exchanger, additionally the heat exchanger get a part of radiation which can heats combustion supporting air, hot air enters into the inner part of a warm-air pipe (5) through a hot-blast pipe (9), and hot air is absorbed by the jetting power of a gas burner (8) and is mixed in the mixing pipe and finally enters burner (4) to burn. The utility model has the advantages that structure is simple and the utilization efficiencies of the fume afterheat and heat radiation are high. The utility model is an ideal device to improve the heat efficiency of the gas range.

Description

The gas-cooker of band preheater

The utility model is a kind of household gas utensils, and its main feature is that have can be with the preheater of combustion air preheating.

The required combustion air of the gas kitchen ranges of family expenses burning now all is room temperature before burning.And the heat that burning back produces some by radiation, modes such as convection current propagate into goes in the air, the flue gas that has waste heat also directly is discharged in the air, thereby makes the household gas utensils thermal efficiency not high.On the market a kind of ring-shaped pottery cup (patent No. 92212065.x) is arranged now, it utilizes ceramic cup will be radiated airborne reflect heat to kitchen range, thereby reaches the energy-conservation effect that heats up.But this ceramic cup this still can be in air after absorbing suitable heat radiations heat energy, and this ceramic cup is not really desirable to the utilization of the flue gas that has waste heat.

The purpose of this utility model will provide a kind of exactly can effectively utilize heat radiation and fume afterheat, improves the thermal efficiency, the household gas range of energy savings.

The purpose of this utility model realizes in the following way:

On general household kitchen range, adorn an air preheater.Preheater mainly is made up of heat exchanger, warm-air pipe, hot air box.Each connected mode is partly seen the schematic diagram of accompanying drawing one.Heat exchanger (1) is a kind of bowl-type device that includes certain space of annular, and a cool air inlet (2) is arranged at the heat exchanger bottom, and a hot air outlet (3) is arranged at top, and the flue gas passing away is arranged on the heat exchanger.The heat exchanger bottom is connected with combustion mouth (4), and the shell of shell and kitchen range joins in order to stationary heat exchangers, and kitchen range are placed directly on the heat exchanger.Hot air box (5) has a hot air inlet (6), and hot air box (5) one side is tightly connected with the air inlet (7) of burner, and burning gases nozzle (8) extend in the case from another side.Warm-air pipe (9) couples together heat exchanger and hot air box.The aerodynamic drag of all air all is that the negative pressure that gas injection provided overcomes.

The flue gas passing away of heat exchanger has following two kinds of principal modes: first kind shown in accompanying drawing two, heat exchanger has some exhanst gas outlets (10), when kitchen range (12) are placed on the heat exchanger, kitchen range and heat exchanger form a tight contact wire, thereby make flue gas discharge, and carry out heat exchange with air in the heat exchanger from the tubule (11) that passes heat exchanger inside.For obtaining heat exchange effect preferably, flue gas tubule (11) can be made crooked.Second kind shown in accompanying drawing three, heat exchanger is combined by several layers, there is the interface of some downward protrusions on each upper strata (15), there is interface protruding upward in each lower floor (16), upper and lower layer has same number, the corresponding interface in position, and after the interface of upper and lower layer engaged, interface just became the passage (13) of combustion air circulation, and slit (14) that produce to get rid of flue gas is when combustion gas is discharged and the combustion air heat exchange.The valve of adjusting combustion air flow can be contained in the cool air inlet (2) of heat exchanger and locate, and also can be contained on the warm-air pipe (9).

The utility model can reach the raising ignition temperature, the raising thermal efficiency, the effect of energy savings because newly-increased preheater can make full use of heat radiation and fume afterheat with the combustion air preheating; Simultaneously because combustion flame substantially in a seal cavity, can prevent that flame from being come by wind, prevents contingency.

Below in conjunction with accompanying drawing four most preferred embodiment of the present utility model is described:

This utility model mainly contains: framework (17), control valve (18), switching knob (19), mixing tube (20), igniter guide duct (21), holder bar (22), gas pipe (23).When the burning heating, kitchen range are placed on the heat exchanger (1), cold air enters heat exchanger (1) from the cool air inlet (2) of heat exchanger (1), during burning originally in air the heat of radiation to the heat exchanger radiation, can be with the air heat in the heat exchanger, flue gas is discharged from the tubule (11) of heat exchanger or slit (14) (seeing accompanying drawing two and accompanying drawing three) in addition, can with the air heat exchange in the heat exchanger, combustion air is heated to uniform temperature at heat exchanger like this, enter hot air box (5) through warm-air pipe (9) again, the jet-action of fuel gas is brought hot-air together in the mixing tube (20) and is mixed in the nozzle (8), burns at burner (4) at last.Raying area and the length of exhaust gases passes and the preheat temperature that size can be controlled combustion air by the control heat exchanger.The ignite method of main fire of some fire gas is adopted in igniting, on heat exchanger, open one with the igniting corresponding passage aisle of guide duct (21) (24) the main fire that ignites, this passage aisle (24) is kept apart with the heat exchanger inner space.

Claims

1, the gas-cooker of this band preheater comprises framework (17), control valve (18), switching knob (19), mixing tube (20), igniter guide duct (21), holder bar (22), gas pipe (23), nozzle (8), burner (4), it is characterized in that increasing the preheater of an energy utilization heat radiation and fume afterheat:

A: increase the certain space that includes of another annular, and have the heat exchanger (1) of a cool air inlet (2) and a hot air outlet (3), heat exchanger to place burner (4) top;

B: increase a hot air box (5) that can hold hot-air, hot air box has a hot air inlet (6), and hot air box (5) is connected with the air inlet (7) of mixing tube on one side, and nozzle (8) extend in the hot air box from another side;

C: increase a warm-air pipe (9) that heat exchanger (1) and hot air box (5) are coupled together.

2, gas-cooker according to claim 1 is characterized in that: the tubule (11) of discharging flue gas is arranged in the heat exchanger (1).

3, gas-cooker according to claim 1 is characterized in that: heat exchanger (1) is made up of several layers, and layer has combustion-supporting air communication channel (13) with interlayer and gets rid of the slit (14) of flue gas.

4, gas-cooker according to claim 1 is characterized in that: the valve of regulating combustion air flow can be contained in that cool air inlet (2) is gone up or warm-air pipe (9) in.

5, gas-cooker according to claim 1 is characterized in that: the passage aisle (24) that has an igniting usefulness on heat exchanger (1).