JPH06193590A - Blower disposing device - Google Patents

Abstract

PURPOSE:To obviate a separately needed instrument when a fan forced heater is inspected and regulated by displaying the number of revolutions of a blower and an energization amount on a display unit to display numerical operation information. CONSTITUTION:A blower disposing device comprises a motor 12; a hall IC 2 to detect the number of revolutions of the motor 12; a current detecting part 8 to detect a fan current; a number of revolutions of fan control circuit 34 to control the number of revolutions of the motor 12 so that the detected number of revolutions is caused to coincide with the target number of revolutions; a display unit 4; and a display switching circuit 38 operated such that, during normal operation, a display content displayed on the display unit 4 forms operation information, such as a set temperature and an operation time, and forms the detected number of revolutions or a detected current value during a test.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A conventional warm air heater blows out a casing having an outlet for blowing warm air into a room, a heating source disposed in the casing, and air heated by the heating source as warm air. A blower that generates an air flow that is directed toward the mouth, a room temperature sensor that detects the room temperature, a temperature setter that sets the room temperature, and a heating source that heats at a heating level that is determined based on the difference between the set temperature and the detected room temperature. And a Hall IC that detects the rotation speed of the blower, and a rotation speed control unit that feedback-controls the blower so that the detected rotation speed is a target rotation speed suitable for the heating level.
And a display for displaying the operating time and the like. Further, there is a warm air heater which does not include the above-described rotation speed control means, but which has a Hall IC for detecting an abnormality in the fan lock.

[0003]

However, the above-mentioned conventional hot air heater has the following drawbacks. Heating level in the inspection / adjustment process during mass production assembly
-When adjusting the characteristic curve of the target rotation speed, when checking whether the blower is rotating at the rotation speed corresponding to the heating level, etc., a measuring instrument for measuring the rotation speed of the blower is separately provided by the inspector. Since it is necessary to prepare for the number of people, a large space is required, and maintenance costs for measuring instruments are required, which increases inspection and adjustment costs. Also, every time the hot air heater is inspected and adjusted, the probe of the measuring instrument is temporarily installed in the blower, and it is necessary to remove it after the inspection and adjustment are completed, which is poor workability.

An object of the present invention is to be separately required when inspecting or adjusting a warm air heater by making it possible to display the blower rotation speed and the energization amount on a display for displaying numerical operation information. It is to provide blower-equipped devices that can omit measuring instruments.

[0005]

[Means for Solving the Problems] In order to solve the above problems,
The present invention has the following configurations. (1) The blower-equipped device is a blower that generates an air flow or supplies combustion air, a rotation speed detection unit that detects the rotation speed of the blower, and a display that can display numerical values in multiple digits. The display content displayed on the display unit is numerical operation information such as set temperature and operation time during normal operation, and a display switching means for setting the detected rotation speed during a test.

(2) The device provided with the blower has a blower for generating an air flow and supplying combustion air, a rotation speed detecting means for detecting the rotation speed of the blower, and an amount of electricity supplied to the blower. The energization amount detection means, a display capable of displaying numerical values with multiple digits, and the display contents to be displayed on the display are used as numerical operation information such as set temperature and operating time during normal operation, and the detected rotation speed or detected energization during testing. Display switching means for setting the quantity.

[0007]

[Action]

[Claim 1] When a device provided with a blower is tested or inspected, when the display switching means is switched to the test side, the rotation speed of the blower detected by the rotation speed detection means is displayed on the display. When the blower-equipped device is normally used, when the display switching means is switched to the normal side, numerical operation information such as set temperature and operating time is displayed on the display.

[Claim 2] When the blower-equipped device is tested or inspected, when the display switching means is switched to the test side, the rotation speed of the blower detected by the rotation speed detecting means or the amount of electricity supplied to the blower is displayed. Displayed on the container. When the blower-equipped device is normally used, when the display switching means is switched to the normal side, numerical operation information such as set temperature and operating time is displayed on the display.

[0009]

【The invention's effect】

[Claims 1 and 2] When inspecting or adjusting the warm air heater, a separately required measuring instrument can be omitted. For this reason, the space for placing the measuring instrument becomes unnecessary and the maintenance cost of the measuring instrument becomes unnecessary. In addition, when inspecting or adjusting the warm air heater, the work of attaching and detaching the probe of the measuring instrument to the blower is unnecessary, and the workability is improved. Incidentally, if the display switching means is switched to the normal side, the numerical operation information is displayed on the display, so that there is no problem in normal use.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the gas warm air heater A is
Convection fan 1, Hall IC 2, combustion level determination unit 3
1, proportional valve drive circuit 32, rotation speed determination unit 33, fan rotation speed control circuit 34, test mode unit 35, display circuit 3
6, 37, control unit 3 having display switching circuit 38, etc.
And a display device 4. Also, 5 is a gas combustor, 5
1 is a proportional valve, 52 and 53 are solenoid valves, 6 is a room temperature sensor, 7
Is a housing, 8 is a current detection unit, 351 is a test switch, 352 is a save operation switch, 353 is a temperature setting switch, and 354 is a rotation speed-fan current display changeover switch.

The convection fan 1 comprises an impeller 11 pivotally mounted in a duct and a motor 12 for driving the impeller 11. The Hall IC 2 is attached to the convection fan 1 and sends out an electric output corresponding to the rotation speed of the fan.

In the normal mode, the combustion level determining unit 31 determines the combustion level (1 to 8) based on the difference between the room temperature detected by the room temperature sensor 6 and the set room temperature set by the temperature setting switch 353, and the combustion level is set. Sends a level signal to the proportional valve drive circuit 32 and the rotation speed determination unit 33 (in normal mode)
To do.

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

The rotation speed determination unit 33 is a combustion level determination unit 3
1 or the fan rotation speed is determined based on the combustion level (1 to 8) determined by the test mode unit 35.

The fan rotation speed control circuit 34 is a Hall IC.
The motor 12 is energized and controlled so that the fan rotation speed detected at 2 becomes the fan rotation speed determined by the rotation speed determination unit 33.

The test mode unit 35 operates as shown in the flow chart of FIG. 3 by turning on a test switch 351 arranged on the control board (a place not touched by the user), and the gas warm air heater is operated. Put A in test mode.

The display circuit 36 converts the electric output of the Hall IC 2 into a display signal 360 which can be digitally displayed by the display 4 in rpm unit. The display circuit 37 displays the output of the current detection unit 8 that detects the current flowing to the motor 12 on the display 4
Is converted into a display signal 370 capable of digital display in mA unit.

The display switching circuit 38 has display signals 360, 3
70 and the driving information signal 380 are input, and normally (during normal driving), the driving information signal 380 is passed, but when the switching signal 350 is input, the display signal 360 or the display signal 370 is passed.

As shown in FIG. 4, the display 4 is composed of seven segment LEDs 41 to 44, and when the normal mode is normal, one of the present time, the remaining operation time, or the set temperature is displayed as a light emission display. However, in the case of an abnormality, an error code is displayed by light emission. In the test mode, the fan rotation speed or fan current is displayed in a light emitting state. When the movable contact of the rotation speed-fan current display changeover switch 354 (disposed on the control board) is on the rotation speed display side (illustrated position), the fan rotation speed is displayed, and when it is on the current display side. Displays the fan current (however, in test mode).

The gas combustor 5 is a ceramic combustion plate 5
4, the combustion cylinder 55 having the ignition electrode 551 and the thermocouple 552, and the nozzle 5 arranged downstream of the air guide path.
A mixing chamber 56 that mixes the gas ejected from 54 and the indoor air guided by the air guiding path 553.
The nozzle 554 is provided at the tip of the gas pipe g in which the solenoid valves 53, 52 and the proportional valve 51 are sequentially arranged from the upstream side.

The housing 7 is provided with suction ports 701 and 702 for the room air 70 used for mixing and combustion in the upper part of the back surface.
The air outlet 703 is provided in the lower part of the front surface. Above suction port 7
01 and 702 are filters 7 for removing dust in the room.
1 is detachably arranged, and a louver 73 that changes the blowing direction of the warm air 72 is attached to the outlet 703. still,
74 is a duct that connects the inlet 701 and the outlet 703, and 553 is an air guiding path that guides the indoor air 70 to the gas combustor 5.

Next, the operation of the test mode section 35 of the control unit 3 will be described with reference to the flowchart of FIG. In the initial state, the operation switch (not shown) is off. In step s1, the test switch 35
When 1 is turned on (YES), the process proceeds to step s2. In step s2, the gas warm air heater A shifts to the test mode. When the save operation switch 352 is turned on (YES) in step s3, the process proceeds to step s4. At the time of shifting to the test mode, the test mode unit 35 first sends 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 switching signal 350 to the display switching circuit 38, and the display unit 4
Indicates the fan rotation speed (rpm) detected by the Hall IC 2 or the fan current (mA) detected by the current sensor. In step s5, it is judged whether or not the (+) side contact of the temperature setting switch 353 is turned on. If the (+) side contact is turned on (YES), the process proceeds to step s6, and if it is not turned on (NO), the step Go to s7. Step s7
Then, it is judged whether or not the (-) side contact of the temperature setting switch 353 is turned on. If the (-) side contact is turned on (YES), the process proceeds to step s8, and if it is not turned on (NO), the process proceeds to step s4. Return. In step s6, the combustion level of the combustion level signal is increased by 1 level, and the process proceeds to step s4. In step s8, the combustion level of the combustion level signal is lowered by one level, and the process proceeds to step s4.

Next, the advantages of the gas warm 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 rotation speed (rp
m) or fan current (mA) can be displayed.
By turning on the (+) side contact and (-) side contact of the temperature setting switch 353 any number of times, without separately preparing a measuring instrument,
It is possible to quickly check whether the rotation speed or the current of the convection fan 1 at an arbitrary combustion level matches the target value. In addition, the space for placing the measuring instrument is unnecessary, and the maintenance cost of the measuring instrument is also unnecessary. Further, at the time of inspection or the like, the work of attaching and detaching the probe of the measuring instrument to and from the convection fan 1 becomes unnecessary, and the workability of the inspection is improved. In the normal mode, the display device 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 embodiments in addition to the above embodiments. a. In the above embodiment, the fan rotation speed control circuit 34 is provided, and the motor rotation speed is determined so that the fan rotation speed detected by the Hall IC 2 becomes the fan rotation speed determined by the rotation speed determination unit 33.
However, the fan rotation speed control circuit 34 is not always necessary. For example, the configuration of the present invention can be applied to a warm air heater provided with a Hall IC to detect the locked state of the fan. Applicable. b. In the above embodiment, the current detection unit 8 is provided on the output side of the fan rotation speed control circuit 34, and the energization current to the motor 12 detected by the current detection unit 8 is used as the energization amount to the blower. The pulse output may be displayed as the amount of electricity supplied to the blower. c. If it is not necessary to display the fan current in the test mode, the current detection unit 8, the display circuit 37, and the rotation speed-fan current display changeover switch may be omitted. d. A sensor other than the Hall IC may be used as the rotation speed detecting means. e. The display may be a liquid crystal display or the like. f. In the test mode, the display may automatically and alternately display the detected rotation speed and the detected current value (claim 2). Further, the combustion level, the detected rotation speed, and the detected energization amount may be sequentially displayed according to the operation of the switch. g. The save operation switch 352 is not limited to that, and may be another preset switch.

[Brief description of drawings]

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

FIG. 2 is a block diagram of the gas warm air heater.

FIG. 3 is a flowchart for explaining an operation of a test mode unit of a control unit arranged in the gas hot air heater.

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

[Explanation of symbols]

 A gas warm air heater (equipment with blower) 1 convection fan (blower) 2 Hall IC (rotation speed detection means) 4 display 8 current detection unit (energization amount detection means) 38 display switching circuit (display switching means)

Claims (2)

[Claims] 1. A blower for generating an air flow and supplying combustion air, a rotation speed detecting means for detecting a rotation speed of the blower, a display capable of displaying a numerical value with a plurality of digits, and the display. An apparatus equipped with a blower, comprising display switching means for displaying the displayed contents as numerical operation information such as set temperature and operating time during normal operation, and detecting rotation speed during testing. 2. A blower for generating an air flow and supplying combustion air, a rotation speed detection means for detecting a rotation speed of the blower, and an energization amount detection means for detecting an energization amount to the blower. A display unit capable of displaying numerical values in digits, and display switching means for displaying the contents displayed on the display unit as numerical operation information such as set temperature and operating time during normal operation and detecting rotation speed or detected energization amount during testing. Blower-equipped equipment comprising.