CN113188251A

CN113188251A - Three-prevention type warm air blower

Info

Publication number: CN113188251A
Application number: CN202110531861.2A
Authority: CN
Inventors: 任小勇; 邱安良; 叶敏; 张天彪; 田伟国; 田伟
Original assignee: Shaanxi Zizhu Industry Co ltd
Current assignee: Shaanxi Zizhu Industry Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-07-30

Abstract

The invention relates to a three-prevention type warm air blower. The invention comprises a shell, wherein both ends of the shell are respectively provided with an air return inlet and an air supply outlet, a combustion heat exchanger, a combustion system, a heat exchange fan and an oil pump are arranged in the shell, an oil supply system and a combustion-supporting fan are arranged outside the shell, the combustion heat exchanger is connected with the combustion system, the oil pump is respectively connected with the heat exchange fan and the oil supply system, the oil supply system and the combustion-supporting fan are respectively connected with the combustion system, and a chimney communicated with the combustion heat exchanger is arranged on the shell. The invention has the advantages of accurate temperature control, high fuel combustion efficiency, no frequent starting noise, energy saving, environmental protection and reliable equipment operation.

Description

Three-prevention type warm air blower

Technical Field

The invention relates to the field of heating, in particular to a three-prevention type fan heater.

Background

The warm-air machine is a camping heating equipment which heats air by burning light diesel oil or kerosene and sends hot air for heating, and the heating area of the warm-air machine is about 30 square meters. The heating device is mainly used for heating in winter for small net rack tents, sanitary tents, class tents and three-proofing tents, and can also be used for heating fixed barracks.

The existing fan heater adopts a quantitative fuel injection mode, the air-fuel ratio cannot be adjusted, the temperature control mode adopts an intermittent operation mode, and although the temperature can be adjusted in the intermittent mode, the oil consumption is large when the fan heater is frequently started and started, equipment devices are frequently started and stopped, the service life of the devices is influenced, and meanwhile, the temperature control precision is poor.

Disclosure of Invention

In order to solve the problems in the background art, the invention provides the three-prevention type fan heater which can realize accurate temperature control, has high fuel combustion efficiency, no frequent starting noise, energy conservation and environmental protection and reliable equipment operation.

The technical solution of the invention is as follows: the invention relates to a three-prevention type warm air blower, which is characterized in that: the three-prevention type fan heater comprises a shell, wherein an air return port and an air supply port are respectively arranged at two ends of the shell, a combustion heat exchanger, a combustion system, a heat exchange fan and an oil pump are arranged in the shell, an oil supply system and a combustion-supporting fan are arranged outside the shell, the combustion heat exchanger is connected with the combustion system, the oil pump is respectively connected with the heat exchange fan and the oil supply system, the oil supply system and the combustion-supporting fan are respectively connected with the combustion system, and a chimney communicated with the combustion heat exchanger is arranged on the shell.

Furthermore, the combustion system comprises a flame spraying barrel connected with the combustion heat exchanger, an air distributor, an oil nozzle, an ignition electrode and a central oil pipe are arranged in the flame spraying barrel, the air distributor is arranged on the inner side of the front end of the flame spraying barrel, the oil nozzle is arranged on one side close to the air distributor, one end of the central oil pipe is connected with the oil nozzle, and the other end of the central oil pipe is connected with the oil supply system.

Further, combustion system still includes the sensitization electric eye, the setting of sensitization electric eye is in a flame projecting section of thick bamboo.

Furthermore, the oil supply system comprises an oil tank, a filter, a pipeline filter, a flow control valve, a normally open electromagnetic valve and an oil nozzle, the oil tank is connected with the oil pump sequentially through the filter, the pipeline filter and the flow control valve, the normally open electromagnetic valve is connected with the oil pump, and the oil pump is connected with the central oil pipe through the oil nozzle.

Furthermore, the combustion heat exchanger is a complex body consisting of a combustion chamber and a heat exchanger, the combustion chamber is arranged in the heat exchanger, a flange is arranged at the front end of the combustion chamber, the flaming cylinder is connected with the combustion chamber through the flange, heat dissipation fins are welded on the outer side of the combustion chamber in a rolling mode, an outer cylinder smoke outlet is arranged on the heat exchanger, and the outer cylinder smoke outlet is connected with the smoke cylinder.

Furthermore, the three-prevention type fan heater also comprises a control system, wherein the control system comprises a controller and a room temperature controller, the room temperature controller is connected with the controller, the oil pump is connected with the oil supply electromagnetic valve, and the controller is respectively connected with the combustion-supporting fan, the heat exchange fan, the normally open electromagnetic valve, the ignition electrode, the oil supply electromagnetic valve and the photosensitive eye.

Further, the control system further comprises an air preheater for electrically heating the combustion fan and a temperature control switch for controlling the temperature, and the air preheater and the temperature control switch are respectively connected with the controller.

Furthermore, the air supply outlet is connected with an air supply pipe, and the air return inlet is connected with an air return pipe.

Furthermore, the shell is also provided with an openable access cover.

Further, the three-prevention type warm air blower further comprises a frame, and the shell is arranged on the frame.

The three-prevention type warm air blower provided by the invention has the following advantages:

the three-prevention type fan heater provided by the invention adopts a combustion control mode with a variable air-fuel ratio, only needs one-time ignition, adjusts the oil inlet amount through temperature feedback and an accurate PID (proportion integration differentiation) adjustment algorithm in the later period, thereby adjusting the combustion heat, realizing accurate temperature control, having high fuel combustion efficiency, having no frequent starting noise, being more energy-saving and environment-friendly compared with other fan heaters, and having more reliable equipment operation due to no frequent starting and stopping working processes.

Drawings

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

FIG. 2 is a schematic view of the combustion system of the present invention;

FIG. 3 is a schematic view of the oil supply system of the present invention;

FIG. 4 is a schematic view of the combustion heat exchanger of the present invention;

FIG. 5 is a schematic diagram of the control system of the present invention;

FIG. 6 is a schematic diagram of a control system panel according to the present invention;

FIG. 7 is a schematic view of a front panel of the room temperature controller according to the present invention;

fig. 8 is a wiring diagram of the control system of the present invention.

The reference numerals are explained below:

1. a housing; 2. a chimney; 3. an access cover; 4, a combustion heat exchanger; 5. a combustion system; 6. a combustion fan; 7. an oil pump; 8. a heat exchange fan; 9. a control system; 10. an air return opening; 11. a frame; 12. an oil supply system; 13. an air supply outlet;

51. an air distributor; 52. a flame projecting cylinder; 53. a nozzle tip; 54. an ignition electrode; 55. a central oil pipe; 56 photo-sensitive eye;

121. an oil tank; 122. a filter; 123. a pipeline filter; 124. a flow control valve; 125. a normally open solenoid valve; 126. an oil jet;

91. a main cable; 92. a room temperature controller cable; 93. a room temperature controller; 94. a controller; 95. a preheater; 96. an oil supply solenoid valve; 97. a temperature control switch;

41. a combustion chamber; 42. heat dissipation fins; 43. a heat exchanger; 44. the outer cylinder is provided with a smoke outlet.

Detailed Description

The general aspects of the invention will be described in further detail with reference to the following figures and specific examples:

referring to fig. 1, the structure of the embodiment of the invention includes a casing 1, a return air inlet 10 and an air supply outlet 13 are respectively arranged at two ends of the casing 2, a combustion heat exchanger 4, a combustion system 5, a heat exchange fan 8 and an oil pump 7 are arranged in the casing 1, an oil supply system 12 and a combustion fan 6 are arranged outside the casing 1, the combustion heat exchanger 4 is connected with the combustion system 5, the oil pump 7 is respectively connected with the heat exchange fan 8 and the oil supply system 12, the oil supply system 12 is connected with the combustion system 5 and is responsible for supplying oil to the combustion system 5, the combustion fan 6 is connected with the combustion system 5 through a combustion head to play a role of supporting combustion, and a smoke tube 2 communicated with the combustion heat exchanger 4 is arranged on the casing 1. Wherein the shell 1 is a cylindrical shell, and an oil tank 121 of the oil supply system 12 is arranged below the shell 1. The cylindrical shell and the oil tank 121 are connected by welding, and the volume of the oil tank 121 is 12.4 liters.

The cylindrical shell is provided with an access cover 3, and after the access cover 3 is removed, the combustion system 5 and the oil supply system 12 can be assembled and disassembled for maintenance. The combustion heat exchanger 4 can be disassembled to carry out loading and unloading maintenance on the combustion-supporting fan 6.

The return air inlet 10 and the air supply outlet 13 are respectively provided with an air pipe, generally 4 meters of air supply pipe are used as air supply pipes, and 5 meters of air return pipe are used as air return pipes. The air duct is composed of an inner air duct and an outer air duct, the inner air duct adopts a spring with the diameter of 1.6 mm as a framework, an aluminum foil tape as an inner wall duct and a fiber felt as a heat-insulating layer, and the inner air duct and the outer air duct are bonded by glue. The outer wind pipe adopts 2 multiplied by 2 camouflage silver-coated waterproof oxford. An air space of 15mm is arranged between the inner air pipe and the outer air pipe, and the inner air pipe is insulated by self-filled hot air.

The fan heater further comprises a frame 11, the shell 1 is arranged on the frame 11, the frame 11 is a steel pipe bending assembly welding piece, the function of the frame is to protect the fan heater, short-distance carrying is facilitated, and meanwhile the frame can also play a role in grounding during operation.

Referring to fig. 2, the structure of an embodiment of the combustion system 5 of the present invention comprises: the burner fire tube 52 is connected with the combustion heat exchanger 4, an air distributor 51, an oil nozzle 53, an ignition electrode 54, a central oil pipe 55 and a photosensitive electric eye 56 are arranged in the burner fire tube 52, the air distributor 51 is arranged on the inner side of the front end of the burner fire tube 52, the oil nozzle 53 is arranged on one side close to the air distributor 51, one end of the central oil pipe 55 is connected with the oil nozzle 53, and the other end of the central oil pipe 55 is connected with the oil supply system 12.

The photoelectric eye 56 is used for monitoring the combustion condition of the fuel. When the photoelectric eye 56 detects that the ignition electrode 54 is successfully ignited, the ignition electrode 54 stops igniting.

The ignition electrode 54 functions as a high voltage discharge to produce an electric spark to ignite the combustion of the fuel.

The burner cylinder 52 and the air distributor 51 are used for reasonably distributing combustion air.

The oil nipple 53 functions to atomize and burn the high-pressure fuel oil.

Referring to fig. 3, the structure of the oil supply system 12 according to the embodiment of the present invention includes: the oil tank 121 is connected with the oil pump 7 sequentially through the filter 122, the pipeline filter 123 and the flow control valve 124, the normally open electromagnetic valve 125 is connected with the oil pump 7, and the oil pump 7 is connected with the central oil pipe 55 through the oil nozzle 126.

The filter 122 may filter impurities in the fuel and may separate moisture from the fuel.

The pipe filter 123 is provided with an ultra-fine filter element, which can protect the oil pump 7 and the oil nozzle 53 and prolong the cleaning period of the oil nozzle 53.

The flow control valve 124 can automatically exhaust air from the oil supply system 12 to adjust the oil suction.

The oil pump 7 has the functions of sucking oil, pressurizing and sending to an oil nozzle for atomization. The oil pressure can be adjusted within the range of 0.85-1.3 MPa.

The normally open solenoid valve 125 is used for draining the stored oil in the high-pressure oil pipe back to the oil pump 7 when the engine is turned off, so as to avoid oil dripping to the combustion chamber 41 through the oil nozzle 53 and prolong the ash removal period of the heat exchanger 43.

Referring to fig. 4, the structure of the combustion heat exchanger 4 of the present invention is a complex composed of a combustion chamber 41 and a heat exchanger 43, wherein a flange is provided at the front end of the combustion chamber 41 and can be connected to a flame tube 52 in the combustion system 5; the outside is roll welded with 18 fins 42 to increase convective heat transfer strength. The lower part of the combustion chamber 41 is provided with two flue gas outlets, and the high-temperature flue gas after combustion flows into the heat exchanger 43 from the outlets.

The heat exchanger 43 is provided with an outer cylinder smoke outlet 44, and the outer cylinder smoke outlet 44 is connected with the smoke tube 2. The chimney 2 is a device which has dual functions of smoke exhaust and noise elimination. The high-temperature flue gas is discharged from the chimney 2 after heat exchange by the heat exchanger 43. The noise reduction means in the chimney 2 reduces combustion noise.

Referring to fig. 5, the structure of the embodiment of the control system 9 of the present invention mainly comprises a controller 94 and a room temperature controller 93; the main cable 91 is connected with the controller 94, the room temperature controller 93 is connected with the controller 94 through the room temperature controller cable 92, and the main control devices comprise an oil supply electromagnetic valve 96, a normally open electromagnetic valve 125, an ignition electrode 54, a heat exchange fan 8, a combustion fan 6, a preheater 95, a temperature control switch 97 and the like, wherein the preheater 95 is used for electrically heating the combustion fan 6, and the temperature control switch 97 is used for controlling the temperature.

Referring to fig. 6, the controller 94 is installed at the rear right below the housing 1, and is provided with an operation display panel and a terminal block. The operation display panel is provided with a display screen, 5 operation indicating lamps, 4 touch operation keys and display lamps thereof. Two rows of binding posts (one row 12 and one row 6) arranged at the lower end of the back of the controller 94 can be respectively connected with a power supply, the heat exchange fan 8, the combustion fan 6, the oil supply electromagnetic valve 96, the normally open electromagnetic valve 125, the ignition electrode 54, the preheater 95, the room temperature controller 93, the temperature control switch 97 and the photoelectric eye 56.

The room temperature controller 93 is switched on, then the power supply is switched on, the start button is pressed, and the warm air blower is in an automatic control state. When the indoor temperature reaches the heating temperature set by the room temperature controller 93, the warm air blower is automatically stopped; when the indoor temperature is lower than the set temperature, the warm air blower can be automatically started to keep the indoor temperature stable. The controller 94 can detect, protect and display over-high and over-low voltage, over-high and over-low frequency, photo-eye failure and over-high furnace temperature during operation.

The controller 94 keys function as follows:

1) the "start" key: pressing the key starts the indicator light to light, and the warm air blower enters a working state.

2) The "stop" key: when the key is pressed, the indicator light is on, and the warm air blower stops working.

3) The "query" key: when the key is pressed, the indicator lamp is on, and the running power voltage, the power frequency, the outdoor temperature, the accumulated running time (hour) of the fan heater and the furnace temperature (high or low) can be displayed.

4) The "set" key: when the key is pressed, the indicator light is on, and the voltage protection range and the frequency protection range can be set, whether to provide protection for voltage and frequency abnormality, the starting temperature of the preheater, the preheating time, the delayed shutdown time and the like can be set.

The controller 94 works as follows:

after the start key is pressed, the preheat indicator is turned on, and the preheater 95 is operated (for about 90 seconds). After the preheater 95 works for 60 seconds, the motor and the combustion-supporting indicator light are on, and the heat exchange fan 8 and the combustion-supporting fan 6 work simultaneously. After 15 seconds, an indicator lamp of ignition and an indicator lamp of an oil pump are turned on, the ignition electrode 54 works, the oil supply electromagnetic valve 96 is opened, the ignition electrode 54 generates electric sparks, and high-pressure oil is sprayed from the oil nozzle 53 to be ignited when meeting the electric sparks. After about 15 seconds, the photoelectric eye 56 judges whether the ignition is successful, if the ignition electrode 54 and the oil supply electromagnetic valve 96 are not successful, the work is stopped simultaneously, and the screen displays 'photoelectric eye fault protection'. If the ignition electrode 54 stops working successfully, the oil supply electromagnetic valve 96 continues working, and the fan heater starts heating operation.

The shutdown process of the fan heater is as follows:

and when the stop button is pressed, the oil supply electromagnetic valve 96 immediately stops working, the heat exchange fan 8 and the combustion fan 6 continue to supply air at the moment, and after the time delay of 90 seconds, the heat exchange fan 8 and the combustion fan 6 are automatically powered off and shut down.

Referring to fig. 7, a room temperature controller 93 is used for control of the room temperature. The control panel is provided with a temperature adjusting button, and the heating temperature is set by a heater according to the requirement. When the fan heater is operated in an automatic manner, a room temperature controller 93 must be plugged in. When the indoor temperature is lower than the temperature set by the room temperature controller 93, the warm air blower is automatically started; when the indoor temperature is higher than the preset temperature of the room temperature controller 93, the warm air blower is automatically closed, and heating is stopped. In addition, the control panel is also provided with a fault query use method and the like which can guide a user to operate and use, help the user to master the use method and query the fault reason.

Referring to fig. 8, the specific connection mode of the controller of the present invention is: the controller 94 is directly connected with the combustion-supporting fan 6 and the preheater 95 through controlling the aviation plug, and the controller 94 sequentially controls the aviation plug and the panel aviation plug control panel; the controller 94 sequentially passes through the control aerial plug and liner aerial plug heat exchange fan 8, the oil supply electromagnetic valve 96, the normally open electromagnetic valve 125, the ignition electrode 54, the room temperature controller 93, the temperature control switch 97 and the photoelectric eye 56.

When the invention works, high-pressure oil is atomized and combusted in the combustion chamber 41, smoke is discharged from the chimney 2 after being subjected to heat exchange through the heat exchanger 43, outdoor cold air (or indoor circulating air) is sent by the heat exchange fan 8 to perform heat exchange with the combustion chamber 41 and the heat exchanger 43, and the cold air is sent out from the air supply outlet 13 at the front part of the fan heater after being heated.

The present invention and the technical contents not specifically described in the above embodiments are the same as the prior art.

The above embodiments are only specific embodiments disclosed in the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention disclosed in the present invention should be subject to the scope of the claims.

Claims

1. The utility model provides a three proofings type electric fan heater which characterized in that: the three-prevention type warm air blower comprises a shell, wherein a return air inlet and an air supply outlet are respectively formed in two ends of the shell, a combustion heat exchanger, a combustion system, a heat exchange fan and an oil pump are arranged in the shell, an oil supply system and a combustion-supporting fan are arranged outside the shell, the combustion heat exchanger is connected with the combustion system, the oil pump is respectively connected with the heat exchange fan and the oil supply system, the oil supply system and the combustion-supporting fan are respectively connected with the combustion system, and a chimney communicated with the combustion heat exchanger is formed in the shell.

2. The triple-protection fan heater according to claim 1, wherein: the combustion system comprises a flame spraying barrel connected with a combustion heat exchanger, wherein an air distributor, an oil nozzle, an ignition electrode and a central oil pipe are arranged in the flame spraying barrel, the air distributor is arranged on the inner side of the front end of the flame spraying barrel, the oil nozzle is arranged on one side close to the air distributor, one end of the central oil pipe is connected with the oil nozzle, and the other end of the central oil pipe is connected with an oil supply system.

3. The triple-protection fan heater according to claim 2, wherein: the combustion system further comprises a photosensitive electric eye which is arranged in the flame projecting barrel.

4. A triple guard fan heater according to claim 3, wherein: the oil supply system comprises an oil tank, a filter, a pipeline filter, a flow control valve, a normally open electromagnetic valve and an oil nozzle, wherein the oil tank is connected with an oil pump sequentially through the filter, the pipeline filter and the flow control valve, the normally open electromagnetic valve is connected with the oil pump, and the oil pump is connected with a central oil pipe through the oil nozzle.

5. The triple-protection fan heater according to claim 4, wherein: the combustion heat exchanger is a complex body formed by a combustion chamber and a heat exchanger, the combustion chamber is arranged in the heat exchanger, a flange is arranged at the front end of the combustion chamber, the flaming cylinder is connected with the combustion chamber through the flange, heat dissipation fins are welded on the outer side of the combustion chamber in a rolling mode, an outer cylinder smoke outlet is formed in the heat exchanger, and the outer cylinder smoke outlet is connected with a smoke cylinder.

6. The triple-protection fan heater according to claim 5, wherein: the three-prevention type warm air blower further comprises a control system, the control system comprises a controller and a room temperature controller, the room temperature controller is connected with the controller, the oil pump is connected with the oil supply electromagnetic valve, and the controller is respectively connected with the combustion-supporting fan, the heat exchange fan, the normally open electromagnetic valve, the ignition electrode, the oil supply electromagnetic valve and the photosensitive eye.

7. The triple-protection fan heater according to claim 6, wherein: the control system further comprises an air preheater for electrically heating the combustion fan and a temperature control switch for controlling the temperature, and the air preheater and the temperature control switch are respectively connected with the controller.

8. A triple-protection fan heater according to any one of claims 1 to 7, wherein: the air supply outlet is connected with an air supply pipe, and the air return inlet is connected with an air return pipe.

9. The triple-protection fan heater according to claim 8, wherein: an openable access cover is further arranged on the shell.

10. The triple-protection fan heater according to claim 8, wherein: the three-prevention type warm air blower further comprises a frame, and the shell is arranged on the frame.