CN112856812A

CN112856812A - High-power electric fan heater that security performance is high

Info

Publication number: CN112856812A
Application number: CN202110132193.6A
Authority: CN
Inventors: 李利红; 李凯; 李琦; 杨越; 李奕霆; 卢翠; 周本丽; 李莉
Original assignee: Henan Quangao Agriculture And Animal Husbandry Technology Co ltd
Current assignee: Henan Quangao Agriculture And Animal Husbandry Technology Co ltd
Priority date: 2021-01-31
Filing date: 2021-01-31
Publication date: 2021-05-28

Abstract

The invention discloses a high-power warm air blower with high safety performance, which belongs to the technical field of warm air blowers and comprises a case, wherein a combustor, an air blower, a hot air channel and an air wheel box are arranged in the case, an electrical control box, a fuel pressure regulating box and an air outlet are arranged on the outer wall of the case, a control system is arranged in the electrical control box, a pipeline through hole I is arranged on the outer wall of the fuel pressure regulating box, a pipeline through hole II is arranged on the case, one end of an air supply pipeline is connected with an air source, the other end of the air supply pipeline is connected with a gas channel on the combustor, the air outlet of the air blower is respectively connected with an air inlet of air/gas premixing on the gas channel and an air inlet of a combustion chamber of the combustor, a hot air. The warm air in the invention is discharged in a negative pressure mode, and the air feeder and the wind wheel in the wind wheel box act together to ensure that the interior of the wind wheel box is in a negative pressure environment, so that open fire cannot be generated at the air outlet of the case, and the safety performance is high.

Description

High-power electric fan heater that security performance is high

Technical Field

The invention belongs to the technical field of warm air blowers, and particularly relates to a high-power warm air blower with high safety performance.

Background

The high-power fan heater mainly refers to fan heaters with larger power in the industrial field, and mainly aims at industrial places with large space, such as workshops, factory buildings and the like. As the name implies, high power fan heaters heat air as do industrial fan heaters. The existing heating modes are various, such as floor heating, radiation, hot air, convection and the like. The energy source selection is also many, traditional coal, gas, general electric heating, the oil gas heating that rises at present. Among various heating modes, air heating is comfortable, a high-power fan heater is required to provide clean and dry air, the whole space is heated, the temperature is uniform, and the air heater has the advantages of being rapid in heating and rapid in heat circulation. The existing high-power fan heater has the problems of complex structure and low safety performance.

Disclosure of Invention

The invention aims to provide a high-power warm air blower with high safety performance, which has the advantages of simple structure and large warm air discharge.

In order to achieve the purpose, the invention adopts the following technical scheme: a high-power warm air blower with high safety performance comprises a case with a hollow cavity, wherein a combustor, a blower, a hot air channel and a wind wheel case are arranged in the case; the utility model discloses a combustor, including quick-witted case, machine case outer wall, gas supply pipeline, air-blower, air outlet, air inlet and combustor, machine case outer wall is equipped with electrical apparatus control box, fuel pressure regulating box and air outlet, is equipped with control system in the electrical apparatus control box, fuel pressure regulating box outer wall is equipped with the pipeline opening I that supplies the air supply pipeline to pass through, is equipped with the pipeline opening II that supplies the air supply pipeline to pass through on the machine case, and air supply pipeline one end is connected with the air supply, and the other end passes pipeline opening I in proper order, pipeline opening II is connected with the gas.

Preferably, the gas supply pipeline comprises a gas supply main pipe, a main gas supply pipe and an auxiliary gas supply pipe, the gas inlet end of the gas supply main pipe is connected with a gas source, the gas outlet end of the gas supply main pipe is respectively connected with the gas inlet ends of the main gas supply pipe and the auxiliary gas supply pipe through a three-way valve, a large-flow inlet and a small-flow inlet are arranged on a gas channel, the gas outlet end of the main gas supply pipe is connected with the large-flow inlet on the burner, a solenoid valve II is arranged at the joint of the main gas supply pipe and the large-flow inlet, the gas outlet end of the auxiliary gas supply pipe is connected with the small-flow inlet on the burner, and a solenoid valve I is arranged at the joint of the.

Preferably, control system includes controller, switch, air-blower pressure switch, forced draught blower negative pressure switch, solenoid valve I, solenoid valve II, some firearm, is used for detecting the flame detector of combustor flame, for the power of the interior consumer power supply of electrical apparatus control box, the signal input part of air-blower pressure switch, forced draught blower negative pressure switch's signal output part connection director, the signal output connection solenoid valve I of controller, solenoid valve II and some firearm.

Preferably, one end of the hot air channel, which is close to the wind wheel box, is provided with an air supplementing opening.

Preferably, a shutter for allowing outside air to enter the case is arranged on the case, and the shutter is arranged on the surface opposite to the electrical appliance control box.

Preferably, the rotating shaft of the wind wheel extends out of a case connecting belt pulley I, the rotating shaft of the air feeder extends out of a case connecting belt pulley II, the belt pulley I and the belt pulley II are connected through a belt, and a belt cover is arranged on the case.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention adopts a negative pressure warm air exhaust mode, and the air outlet of the case does not generate open fire, thereby having high safety performance.

2. According to the invention, through arranging the blower pressure switch and the blower negative pressure switch, the control system can control the combustion machine to work and the igniter to ignite only when the blower, the blower and the blower are ensured to work normally, so that the phenomenon that hot air cannot be discharged in time due to the fact that the igniter ignites and the combustor works when the blower or the blower works abnormally is avoided.

3. The invention adopts a two-section type combustion mode, wherein during the first-section combustion, the electromagnetic valve I is controlled to be opened, the gas source supply adopts small flow supply, when the flame detector detects that the first-section fire is normally combusted, the controller controls the electromagnetic valve II to be opened, the gas source supply adopts large flow supply, and the two-section type combustion is carried out, namely, the fan heater is in a normal working state. The two-section type combustion mode is adopted, so that the problems that the air source is wasted and the air source is leaked in a large amount due to the abnormal ignition or failure of the igniter are solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic connection diagram of the blower, the burner, the hot air channel, the wind wheel box and the blower in the present invention;

FIG. 3 is a schematic view of the present invention without the left side wall;

FIG. 4 is a schematic view showing a connection structure of a burner, a gas passage and an air passage in the present invention; (ii) a

FIG. 5 is a schematic view showing the structure of a hot air passage according to the present invention;

FIG. 6 is a control schematic block diagram of the control system of the present invention;

in the figure: the device comprises a case 100, an air outlet 101, pipeline ports II-102, a shutter 103, a combustor 200, a gas channel 201, a large-flow inlet 202, a small-flow inlet 203, an air inlet 204 for premixing air and gas, an auxiliary air channel 205, a blower 300, a blower 400, a hot air channel 500, an air supplementing port 501, a wind wheel box 600, a belt cover 700, an electric appliance control box 800, a fuel pressure regulating box 900 and pipeline ports I-901.

Detailed Description

In order that those skilled in the art will better understand the present invention, the following description will be made in conjunction with specific embodiments thereof:

as shown in fig. 1-6, a high-power fan heater with high safety performance includes a case 100 with a hollow chamber, a burner 200, a blower 300, a blower 400, a hot air channel 500, and a wind wheel box 600 are disposed in the case 100, a wind wheel is disposed in the wind wheel box 600, a rotating shaft of the wind wheel extends out of the case 100 and is connected with a belt pulley i, a rotating shaft of the blower 400 extends out of the case 100 and is connected with a belt pulley ii, the belt pulley i and the belt pulley ii are connected through a belt, and a belt cover 700 is disposed at a position on the case 100 corresponding. Through setting up belt cover 700, can effectively avoid because of the belt exposes the incident that causes outside.

The outer wall of the case 100 is provided with an electrical control box 800, a fuel pressure regulating box 900 and an air outlet 101, the electrical control box 800 and the fuel pressure regulating box 900 are arranged on the outer wall of the front side of the case 100, and the air outlet 101 is arranged on the outer wall of the left side of the case 100.

The outer wall of the fuel pressure regulating box 900 is provided with a pipeline port I-901 through which an air supply pipeline passes, the case 100 is provided with a pipeline port II-102 through which the air supply pipeline passes, one end of the air supply pipeline is connected with an air source, the other end of the air supply pipeline sequentially penetrates through the pipeline port I-901 and the pipeline port II-102 to be connected with a gas channel 201 on the combustor 200, the air source is liquefied gas or natural gas, and the air source in the embodiment is liquefied gas.

Preferably, the air supply pipeline comprises an air supply main pipe, a main air supply pipe and an auxiliary air supply pipe, an air inlet end of the air supply main pipe is connected with an air source, an air outlet end of the air supply main pipe is respectively connected with air inlet ends of the main air supply pipe and the auxiliary air supply pipe through a three-way valve, a large-flow inlet 202 and a small-flow inlet 203 are arranged on a gas channel 201 on the burner 200, an air inlet 204 for premixing air and gas is arranged on the gas channel, an air outlet end of the main air supply pipe is connected with the large-flow inlet 202, an electromagnetic valve II is arranged at the joint of the main air supply pipe and the large-flow inlet 202, an air outlet end of the auxiliary air supply pipe is connected with the small-flow inlet 203, and an electromagnetic valve.

The air outlet of the blower 300 is connected with the air inlet 204 for premixing air and gas through the auxiliary air channel 205, and the air outlet of the blower 300 is connected with the air inlet of the combustion chamber of the burner 200 through the main air channel, so that when the blower 300 works, most of air quantity blows to the combustion chamber through the main air channel, and a small part of air quantity enters the gas channel 201 (gas channel for introducing gas during secondary combustion) from the air inlet 204 for premixing air and gas.

The hot air outlet of the burner 200 is connected to the hot air inlet of the wind wheel box 600 through the hot air channel 500, and the hot air outlet of the wind wheel box 600 is communicated with the air outlet 101 of the case 100. The blower 400 and the wind wheel act together to form negative pressure in the wind wheel box 600, so that the air heated by the burner 200 is discharged from the air outlet 101 on the case 100. Preferably, a temperature sensor for detecting the temperature of the warm air is arranged at the air outlet 101.

The case 100 is provided with a louver 103 for allowing external air to enter the case 100, the louver 103 is disposed on a rear wall of the case 100, and an air supply opening 501 is disposed at an end of the hot air channel 500 close to the wind wheel box 600. Under the action of negative pressure, a small part of outside air is mixed with hot air in the wind wheel box 600 through the shutter 103 and the air supply opening 501 and then is discharged from the air outlet 101 on the left side of the machine box 100.

The control system is arranged in the control box and comprises a controller, a power switch, a blower pressure switch, a blower negative pressure switch, a temperature sensor, an electromagnetic valve I, an electromagnetic valve II, a burner, a flame detector for detecting burning flame of the burner and a power supply for supplying power to electric elements in the electrical appliance control box, wherein the signal output end of the blower pressure switch, the blower negative pressure switch and the temperature sensor is connected with the signal input end of the controller, and the signal output end of the controller is connected with the blower 300, the blower 400, the electromagnetic valve I, the electromagnetic valve II and the igniter.

The setting of air blower pressure switch, forced draught blower negative pressure switch has improved factor of safety when this product uses, only when guaranteeing air blower, forced draught blower, normal work, control system just can control combustor work, and some firearm strike sparks, avoids air blower or air blower abnormal work time, and some firearm strike sparks, and the combustor work leads to the phenomenon that hot-air can not in time discharge

The gas type in this embodiment is: a liquefied gas; the gas flow is as follows: 24.45kg/h, 33.5 Nm/h; thermal power: 350 kw; gas pressure: 20 mbar; outlet temperature: more than 150 ℃; ignition mode: igniting at high pressure; air volume: 6500m by year; rated voltage: 380V; rated power: 2.4 kw.

The working principle is as follows: when the air blower is used, the power supply is started, the control system works, the control system starts to control the air blower 300 and the air blower 400 to work after detecting that the pressure switch of the air blower is switched off and the negative pressure switch of the air blower is switched off (the pressure switch of the air blower is used for detecting the working state of the air blower, and when the air blower 300 works (air enters a gas channel from an air inlet through which air and gas are premixed and enters a combustion chamber through a main air pipeline through an auxiliary air channel), the pressure switch of the air blower is switched on, and the signal line of the pressure switch of the air blower uploads the information of the switching of the air blower to the controller), and similarly, the negative pressure switch of the air blower is used for detecting the working state of the air blower, when the air blower works, the negative pressure switch of the air blower is switched on, and the, the controller starts to control the burner 200 to start, namely, the controller controls an igniter in the burner 200 to start ignition, the electromagnetic valve I is controlled to be opened, the air source enters the burner 200 through the air supply main pipe, the auxiliary air supply pipe and the small flow inlet 203, the burner enters a section of combustion stage, when the flame detector detects that a section of fire is normally combusted, the flame detector sends a detected signal to the controller, the controller controls the electromagnetic valve II to be opened, the air source enters the burner 200 through the air supply main pipe, the main air supply pipe and the large flow inlet 202, and the fan heater is in a normal working state.

The invention adopts a two-section type combustion mode, wherein during the first-section combustion, the electromagnetic valve I is controlled to be opened, the gas source supply adopts small flow supply, when the flame detector detects that the first-section fire is normally combusted, the controller controls the electromagnetic valve II to be opened, the gas source supply adopts large flow supply, and the two-section type combustion is carried out, namely, the fan heater is in a normal working state. The two-section type combustion mode is adopted, so that the problems that the air source is wasted and the air source is leaked in a large amount due to the abnormal ignition or failure of the igniter are solved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A high-power electric fan heater that security performance is high, its characterized in that: the wind wheel type air conditioner comprises a case (100) with a hollow cavity, wherein a combustor (200), a blower (300), a blower (400), a hot air channel (500) and a wind wheel box (600) are arranged in the case (100), and a wind wheel is arranged in the wind wheel box (600) and is connected with the blower (400) through a belt; the outer wall of the case (100) is provided with an electric appliance control box (800), a fuel pressure regulating box (900) and an air outlet (101), a control system is arranged in the electric appliance control box (800), the outer wall of the fuel pressure regulating box (900) is provided with a pipeline through hole I (901) for an air supply pipeline to pass through, the case (100) is provided with a pipeline through hole II (102) for the air supply pipeline to pass through, one end of the air supply pipeline is connected with an air source, the other end of the air supply pipeline sequentially penetrates through the pipeline through hole I (901) and the pipeline through hole II (102) to be connected with a gas channel (201) on a combustor (200), the air outlet of the air blower (300) is respectively connected with an air inlet (204) of air/gas premixing on the gas channel (201) and an air inlet of a combustor of a combustion chamber of the combustor (200), and a hot air outlet of the combustor (200) is connected with, and a hot air outlet of the wind wheel box (600) is communicated with an air outlet (101) on the case (100).

2. A high power fan heater with high safety performance as claimed in claim 1, wherein: the gas supply pipeline comprises a gas supply main pipe, a main gas supply pipe and an auxiliary gas supply pipe, wherein the gas inlet end of the gas supply main pipe is connected with a gas source, the gas outlet end of the gas supply main pipe is respectively connected with the gas inlet ends of the main gas supply pipe and the auxiliary gas supply pipe through a three-way valve, a large-flow inlet and a small-flow inlet are arranged on a gas channel, the gas outlet end of the main gas supply pipe is connected with the large-flow inlet, a solenoid valve II is arranged at the joint of the main gas supply pipe and the large-flow inlet, the gas outlet end of the auxiliary gas supply pipe is connected with the small-flow inlet, and a solenoid valve I is arranged at the joint.

3. A high power fan heater with high safety performance as claimed in claim 2, wherein: control system includes controller, switch, air-blower pressure switch, forced draught blower negative pressure switch, solenoid valve I, solenoid valve II, some firearm, is used for detecting the flame detector of combustor flame, for the power of the power supply of consumer in the electrical apparatus control box, the signal input part of air-blower pressure switch, forced draught blower negative pressure switch's signal output part connection director, the signal output connection solenoid valve I of controller, solenoid valve II and firearm.

4. A high power fan heater with high safety performance as claimed in claim 3, wherein: and an air supplementing opening (501) is formed in one end, close to the wind wheel box (800), of the hot wind channel (500).

5. The high-power fan heater with high safety performance as claimed in claim 4, wherein: the air conditioner is characterized in that a shutter (103) used for enabling outside air to enter the machine case (100) is arranged on the machine case (100), and the shutter (103) is arranged on the surface opposite to the electric appliance control box (800).

6. A high power fan heater with high safety performance according to claim 5, characterized in that: the pivot of wind wheel stretches out quick-witted case (100) and connects belt pulley I, the pivot of forced draught blower (400) stretches out quick-witted case (100) and connects belt pulley II, belt pulley I, belt pulley II pass through the belt and connect, be equipped with belt cover (700) on quick-witted case (100).