KR970004721B1 - Blow fan establishment device - Google Patents

Abstract

A fan exhaustion apparatus in which the number of rotation or the amount of current of a fan is displayed on a display for displaying numeric operation information is disclosed. The fan exhaustion apparatus includes a motor 12, a hall IC 2 for detecting the number of rotations of the motor 12, a current detector 8 for detecting current of a fan, a fan rotation number control circuit 34 for controlling the number of rotations of the motor 12 such that the detected rotation number can match a target rotation number, a display 4, and a display conversion circuit 38 for displaying operation information such as set temperature or operation time in a normal period or detected rotation number or detected current value in a test period using the contents displayed on the display 4. Thus, when a fan heater is to be tested or adjusted, an additional testing apparatus can be omitted.

Description

Blower

1 is an explanatory diagram of a gas warm air heater according to an embodiment of the present invention.

2 is a block diagram of the gas hot air heater.

3 is a flowchart for explaining the operation of the test mode section of the control unit in which the gas hot air heater is disposed.

4 is an explanatory diagram of an indicator of the gas warm air heater.

* Explanation of symbols for the main parts of the drawing

A: Gas Hot Air Heater (Blower Exhaust) 1: Convection Fan (Blower)

2: Hall IC (speed detection means) 4: Indicator

8: current detecting unit (current detecting unit) 38: display converting circuit (display variable stage)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower exhaust device provided with a blower for generating air flow or supplying combustion air.

Conventional warm air heaters detect a room temperature, a casing having a spout for ejecting warm air into a room, a heating source disposed in the casing, a blower for generating an air flow that directs the air heated by the heating source to the spout as a warm air, and a room temperature. A room temperature sensor for setting the temperature and a temperature setter for setting the room temperature, a heating controller for heating the heating source at a heating level determined based on a difference between the set temperature and the detected room temperature, a Hall IC for detecting the rotation speed of the blower, And rotation speed control means for feedback-controlling the blower so that the detected rotation speed is a target rotation speed suitable for the heating level, and an indicator for displaying the operation time and the like.

Moreover, although the rotation speed control means as mentioned above is not provided, there exists also the warm air heating which arrange | positioned the hall IC in order to detect abnormality of a fan lock.

By the way, the conventional hot air heater is inadequate as shown below.

In the inspection and adjustment process during mass production assembly, when adjusting the characteristic curve of the target heating speed of the heating level, checking whether the blower is rotating at the rotation speed corresponding to the heating level, etc. It is necessary to prepare a measuring instrument to measure the number of people separately, so that a large space is required, and the maintenance cost of the measuring instrument is also increased, thereby increasing the inspection and adjustment cost. In addition, when inspecting and adjusting a hot air heater, the flow of a measuring instrument is hypothesized by a blower, and when the audit | inspection and adjustment are complete | finished, the work | work is bad.

SUMMARY OF THE INVENTION An object of the present invention is to provide a blower excrement apparatus which can omit a measuring instrument which is required when inspecting or adjusting a hot air heater by enabling the display of the number of blowers and the amount of energization to be displayed on an indicator for displaying numerical operation information. .

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention employ | adopted the following structures.

(1) The blower exhaust equipment includes a blower for generating air flow or supplying combustion air, a rotation speed detecting means for detecting the rotation speed of the blower, an indicator capable of displaying numerical values in multiple digits, and displaying on the display. Display conversion means for setting the display contents as numerical operation information such as a set temperature and an operating time in normal times to be the detected rotational speed during the test is provided.

(2) The blower exhaust equipment includes a blower for generating air flow or supplying combustion air, rotation speed detecting means for detecting the rotation speed of the blower, and energizing amount detecting means for detecting the amount of electricity supplied to the blower; Display converting means for detecting the number of revolutions or the amount of energizing power at the time of testing using a display capable of numerical display in multiple digits and the display content displayed on the display as numerical operation information such as a set temperature or an operating time in a test. Equipped.

[Paragraph 1]

In the case of testing or inspecting the blower excretion apparatus, when the display converting means is changed to the test side, the rotation speed of the blower detected by the rotation speed detecting means is displayed on the display.

[Paragraph 2]

When the blower exhaust equipment is normally used, when the display conversion means is switched to the normal side, numerical operation information such as a set temperature and an operation time is displayed on the display.

In the case of testing or inspecting the blower exhaust equipment, when the display converting means is switched to the test side, the rotation speed of the blower detected by the rotation speed detecting means or the amount of energization to the blower is displayed on the display.

When the blower exhaust equipment is normally used, when the display converting means is switched to the normal side, numerical operation information such as a set temperature and an operation time is displayed on the display.

[Paragraphs 1 and 2]

When inspecting or inspecting a warm air heater, the measuring instrument which is required separately can be omitted.

For this reason, the space which puts a measuring instrument becomes unnecessary, and the maintenance cost of a measuring instrument becomes unnecessary. In addition, when inspecting or adjusting the warm air heater, the attaching and detaching operation of the flow meter of the measuring instrument to the blower becomes unnecessary, thereby improving workability.

In addition, since the numerical operation information is displayed on the display when the display converting means is converted to the normal side, there is no problem in normal use.

An embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 1 and FIG. 2, the gas-heated air heater A includes the convection fan 1, the hall IC 2, the combustion level determining unit 31, the proportional valve driving circuit 32, and the rotation speed. A control unit 3 having a determination unit 33, a fan speed control circuit 34, a test mode unit 35, display circuits 36 and 37, a display conversion circuit 38, and the like, and an indicator 4; It is provided. 5 is gas burner, 51 is proportional valve, 52 is 53 solenoid valve, 6 is room temperature sensor, 7 is housing, 8 is current detector, 351 is test switch, 352 is save operation switch, 353 is temperature setting switch, 354 Is the rotation fan current display changeover switch.

The convection fan 1 is composed of an impeller 11 mounted non-pot in the duct and a motor 12 for driving the impeller 11.

The hall IC 2 is attached to the convection fan 1 and outputs an electric output corresponding to the rotation speed of the fan.

In the normal mode, the combustion level determining unit 31 determines the combustion levels 1 to 8 based on the difference between the room temperature detected by the room temperature sensor 6 and the room temperature set by the temperature setting switch 353. The combustion level signal is sent to the proportional valve driving circuit 32 and the rotation speed determining section 33 (in the normal mode).

The proportional valve driving circuit 32 receives a combustion level signal (in the normal mode) and flows a proportional valve current corresponding to the combustion level to the proportional valve 51.

The rotation speed determination unit 33 determines the fan rotation speed based on the combustion levers 1 to 8 determined by the combustion level determination unit 31 or the test mode unit 35.

The fan rotation speed control circuit 34 energizes and controls the motor 12 so that the fan rotation speed detected by the hall IC 2 is the fan rotation speed determined by the rotation speed determination unit 33.

The tested section 35 turns on the test switch 351 disposed on the control board (where the user does not touch), and operates as shown in the flowchart of FIG. 3 to put the gas warm air heater A in the test mode. .

The display circuit 36 converts the electrical output of the hall IC 2 into a display signal 360 which the display 4 can digitally display in units of rpm.

The display circuit 37 converts the output of the current detector 8 for detecting the current flowing through the motor 12 into a display signal 370 in which the display 4 is digitally displayable in mA units.

The display conversion circuit 38 inputs the display signals 360 and 370 and the operation information signal 380 so that the normal (normal operation) passes through the operation information signal 380 and is displayed by the input of the conversion signal 350. The signal 360 or the display signal 370 is passed through.

As shown in FIG. 4, the indicator 4 is composed of seven segments of LEDs 41 to 44. When the normal mode is normal, one of the current time, the remaining operation time, or the set temperature is displayed. Error code is displayed. In the test mode, fan rotation speed or fan current is displayed.

In addition, when the movable contact of the rotation speed fan current display conversion switch 354 (installed on the control board) is on the rotation speed display side (shown position), the fan rotation speed is displayed. Displays the current (in test mode).

The gas combustor 5 includes a combustion plate 54 made of ceramic, a combustion body 55 provided with an ignition electrode 551 or a thermocouple 552, and a nozzle 554 disposed downstream of the air induction path. It consists of a mixing chamber 56 for mixing the injected gas and the indoor air guided by the air flow path (553). Moreover, the said nozzle 554 is provided in the front-end | tip of the gas pipe g which arrange | positioned the solenoid valve 53 and 52 and the proportional valve 51 sequentially from the upstream.

The housing 7 is provided with suction ports 701 and 702 of the indoor air 70 used for mixing and combustion at the upper part of the rear face, and a blower outlet 703 is provided at the lower part of the front face. A filter 71 for removing dust in the room is detachably disposed at the suction ports 701 and 702, and a louver 73 is provided at the jet port 703 to change the jet direction of the warm air 72. In addition, 74 is a duct which communicates with the inlet 701 and the blower outlet 703, and 553 is the air induction which guides the indoor air 70 to the gas combustor 5. As shown in FIG.

Next, the operation of the test mode unit 35 of the control unit 3 will be described with the flowchart of FIG.

In the initial state, the operation switch (not shown) is in the off state.

When the test switch 351 is turned on (YES) in step S1, the flow advances to step S2.

In step S2, the gas hot air heater A enters the test mode.

If the save operation switch 352 is turned ON (YES) in step S3, the flow advances to step S4. When the test mode is shifted, the test mode unit 35 first transmits a combustion level signal corresponding to the combustion level 4 to the rotation speed determination unit 33.

In step S4, the test mode unit 35 sends the conversion signal 350 to the display conversion circuit 38, and the indicator 4 detects the fan speed (rpm) or the current sensor detected by the hall IC 2; Displays one fan current (mA).

In step S5, the (+) side of the temperature setting switch 353 determines whether the contact is turned on, and if the (+) side contact is turned on (YES), the process proceeds to step S6, and if it is not turned on (NO), the step Proceed to S7.

In step S7, it is determined whether the (-) side contact of the temperature setting switch 353 is turned on. If the (-) side contact is turned on (YES), the flow proceeds to step S8, and if it is not turned on (NO), step S4. Return to.

In step S, the combustion level of the combustion level signal is raised by one level, and the flow proceeds to step S4.

In step S8, the combustion level of the combustion level signal is lowered by one level, and the flow proceeds to step S4.

Next, the advantages of the gas hot air heater A will be described.

When the test switch 351 is turned on and the save operation switch 352 is turned on, the fan speed (rpm) or the fan current (mA) can be displayed on the indicator 4, and the set temperature switch 353 (+ By randomly turning on the () and (-) side contacts, you can quickly check whether the rotation speed or current of the convection fan 1 at any combustion level is consistent with the target value without preparing a separate instrument. There is a number.

In addition, the space for placing the measuring instrument becomes unnecessary, and the maintenance cost of the measuring instrument becomes unnecessary. In addition, the attachment / detachment work of the flow meter of the measuring instrument to the convection fan 1 is unnecessary at the time of inspection and the like, thereby improving the workability of the inspection.

In the normal mode, the display 4 displays operation information such as the current time, operation time, set temperature or error code, so that there is no problem in normal use.

The present invention includes the following embodiment in addition to the above embodiment.

a. In the above embodiment, the fan speed control circuit 34 is provided, and the electric current is controlled by the motor 12 such that the fan speed detected by the hall IC 2 is determined by the speed determining unit 33. Although the fan speed control circuit 34 is not necessarily required, for example, the configuration of the present invention can also be applied to a warm air heater provided with a hall IC in order to detect a locked state of the fan.

b. In the above embodiment, the current detector 8 is provided on the output side of the fan speed control circuit 34, and the energized current to the motor 12 detected by the current detector 8 is the amount of electricity supplied to the blower. The pulse output of the unit 33 may be displayed as the amount of electricity supplied to the blower.

c. If the display of the fan current is not necessary in the test mode, the current detector 8, the display circuit 37 and the fan current display conversion switch may be omitted.

d. Sensors other than the hall IC may be used as the rotation speed detecting means.

e. The indicator may be a liquid crystal display or the like.

f. The configuration (paragraph 2) in which the indicator automatically displays the detected rotational speed and the detected current value in the test mode may be sufficient.

Moreover, the structure which displays the combustion level, the detection rotation speed, and the detection energization order one by one according to operation of a switch may be sufficient.

g. The save operation switch 352 is not limited thereto, and may be a switch other than a preset value.

Claims (2)

A blower for generating air flow or supplying combustion air, a rotation speed detecting means for detecting the rotation speed of the blower, a display capable of displaying numerical values in multiple digits, a mode selecting means, and a display displayed on the display And a display converting means for setting the contents as numerical operation information such as a set temperature and an operating time in a normal mode, and a detection speed in a test mode. A blower for generating air flow or supplying combustion air, a rotation speed detecting means for detecting the rotation speed of the blower, an energization amount detecting means for detecting the amount of electricity supplied to the blower, and a numerical display in multiple digits Display changeover which displays possible display, mode selection means, and display contents displayed on the display as numerical operation information such as set temperature and operation time in normal mode, and detects rotation speed or detected current amount in test mode. A blower excrement apparatus comprising a means.