JPH0434680Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is a hot air heater used mainly for heating the inside of a greenhouse in the winter, such as a greenhouse, and an expansion when blowing hot air. In hot air heater equipment equipped with ducts made of materials that sometimes make noise, such as vinyl ducts (hereinafter simply referred to as vinyl ducts), noise prevention measures to prevent the noise generated when the vinyl ducts are expanded. This relates to a prevention mechanism.

``Conventional technology'' In greenhouse cultivation, such as vinyl greenhouses, heating is generally required because the temperature inside the greenhouse drops at night.

For this reason, a heat exchange mechanism usually involves installing a warm air heater using gas, liquid, or solid fuel inside the house, and introducing the cold air from inside the house into this warm air heater.
This air is exchanged with warm air through heat exchange with a pot etc. inside the warm air heater, and then the warm air is supplied almost uniformly into the house from the vinyl duct, that is, cold air → warm air. The circulation path is as follows: conversion to wind → hot air blowing to the vinyl duct → hot air supply from the vinyl duct to the inside of the house, and the above control, that is, hot air supply to the inside of the house,
Generally, this is done intermittently using a temperature sensor installed inside the greenhouse.

In the above-mentioned recirculation route, hot air from the warm air heater is supplied to a relatively thick vinyl duct, and when the vinyl duct expands, it is forced to expand. As a result, a loud crunching sound is generated, and this crunching sound is a so-called crunching sound that occurs intermittently, which is annoying to the ears. It has become a social problem.

In particular, when the vinyl house gets cold and the vinyl ducts become hard, the crunching noise becomes quite loud and the noise becomes even more intense, and especially in the morning, this noise can be audible to the ears and cause sleep disturbances. The current situation is that greenhouse farmers are in great pain.

Such noise problems are noticeable in large houses where vinyl ducts have a large area and distance, and urgent measures are needed.

``Means for Solving Problems'' Therefore, the present invention is configured to separately control the air suction fans installed in the hot air heater.First, one fan is operated and the Blows warm air into the duct.

The amount of air blown is set to approximately 1/2 of the total amount of air blown, and after a certain period of time (to be precise, when almost all of the vinyl duct has been expanded to about 2/3), the next one is installed. The fan is operated to control the amount of warm air blown into the vinyl ducts in an amount equivalent to the total amount of air blown. At least two air inlets installed in the hot air heater, motor-driven fans installed in each of the at least two air inlets, and generated by the hot air heater installed in the hot air heater. a duct made of a material that makes a sound when the plurality of vinyl ducts are expanded, which blows warm air into the house; and one of the two motors installed in the house. a control device comprising: a temperature thermosensor that controls the operation of the two motors and controls the stopping of the two motors; and a timer that controls the operation timing of the other one of the two motors; ,
In the hot air heater device, the temperature thermo sensor detects the temperature inside the house, and when the detected value is below a set value,
Activating the one motor to blow approximately 1/2 of the total amount of hot air into the vinyl duct,
The timer is input, and then, after the set time of this timer has elapsed, the other motor is activated to blow air into the vinyl duct in an amount approximately equivalent to the total amount of hot air blown, to blow air into the house. heating,
After that, the temperature thermo sensor detects the temperature inside the house, and when the detected value is equal to or higher than a set value, the operation of the two motors is stopped. This is a noise prevention mechanism for machine equipment.

``Function'' Next, to explain the function of the present invention, when the temperature thermo sensor installed in the house detects the indoor temperature below the set value, first turn on the electromagnetic switch and When one thermometer installed in the air intake of the wind heater is activated,
Approximately 1/2 of the total intake amount of cold air is sucked into this warm air heater.

At about the same time, the hot air heater's fuel system was turned on.
The kettle and a heat exchanger (not shown) such as an erofine pipe are heated by the flame of the fuel gas.

Therefore, the cold air sucked into the hot air heater (hereinafter simply referred to as sucked air) is heated through heat exchange with the surface of the pot and the heat exchanger and converted into warm air.

After that, this warm air is sequentially blown into the vinyl duct, and the vinyl duct is gradually expanded by blowing warm air equivalent to approximately 1/2 of the total air volume of the vinyl duct.

Then, the inside of the house is gradually heated through the hot air supplied through the openings of the vinyl ducts.

In addition, the timer is configured to be energized at the same time as the motor is activated, and as described above,
When almost all of the vinyl duct has expanded by about 2/3, the timer switch is activated and another electromagnetic switch is turned on, which connects the air heater to another air intake port. The other motor is also operated, so that two motors are operated at the same time.

Therefore, the cold air equivalent to the total suction volume of the hot air heater is sucked in, and the sucked cold air is heated through heat exchange with the surface of the pot and heat exchanger and converted into warm air. After that, this entire amount of warm air is blown into the vinyl duct (so-called warm air is blown into the vinyl duct, which corresponds to the total amount of air blown), and the vinyl duct, which has been expanded by about 2/3, is expanded. , and further expand one after another until it is fully opened.

Then, warm air is supplied into the house through the opening of the vinyl duct, and the room temperature inside the house gradually rises. When the room temperature reaches a certain level, the temperature thermo sensor and temperature thermo control section are turned off.
Then, both electromagnetic switches are turned OFF, the operation of the two motors and fans is stopped, and the intake of air into the warm air heater is also stopped.

As a result, the hot air blowing to the vinyl duct is stopped, and the vinyl duct is then shrunk.
They form a flat plate shape that looks like they overlap each other.

By controlling the amount of hot air blown to the vinyl duct through such operations, the vinyl duct can be expanded gradually and gradually.

Thereafter, the system operates in the same manner as described above, and is controlled to repeatedly suck air into the warm air heater, stop it, increase or decrease the amount of warm air sent to the vinyl duct, and turn on and off the heating in the house. It is.

``Embodiment'' The drawing shows an embodiment of the present invention, and in the drawing, 1 is a hot air heater of a known gas, liquid, or solid fuel type installed in a house 2;
etc. (hereinafter 3, 3a, etc. will be simply referred to as 3 etc.) is its hot air outlet, 5 is a fuel device such as a burner and a fuel device, and this hot air heater 1 also includes a pot and an air heater (not shown). A heat exchanger such as a pipe is installed inside.

A vinyl duct 6 is connected to the outlet 4 of the warm air heater 1.

Reference numeral 7 denotes a motor installed at the suction port 3 of the hot air heater 1, and an output shaft of this motor 7 is provided with a fan 8 for sucking air.

Similarly, another motor 7a is provided at another suction port 3a of the warm air heater 1, and this motor 7a
A fan 8a for sucking air is provided on the output shaft.

Although not shown, when the hot air heater 1 has other suction ports, it is also equipped with a motor and a fan in the same manner as described above.

In the figure, reference numeral 9 denotes a thermostat sensor installed in the house 1, and the two motors 7 and 7a are individually controlled by the operation of the thermostat sensor 9 via the control device A. .

A preferable example of this control device A will be explained as follows.
It will be as follows.

That is, a temperature thermostat control section 9a connected to the thermostat sensor 9 is connected to an electromagnetic switch 10 that controls ON/OFF of the motor 7, and one end of the timer 11 is connected to, for example, The timer 11 is connected to the R phase and T phase of the power supply circuit of the motor 7, and the other end is connected to the R phase of the power supply circuit of another motor 7a and the electromagnetic switch 10a, respectively.
The input signal is input when the power supply circuit of the motor 7 is closed, and the switch of the timer 7 is activated when the required time has elapsed, thereby controlling the activation timing of one heater 7a.

Although not shown, the motor 7a is connected to the timer 1.
Instead of 1, other means, such as a temperature thermostat control unit 9
can be controlled via a.

In this case, for example, it is preferable to use a circuit similar to that of the motor 7, temperature thermostat control section 9a, and electromagnetic switch 10, and to install another temperature thermostat sensor in the house.

Further, it is necessary to set predetermined temperatures for the temperature thermostat control section 9a and the other temperature thermostat control sections, respectively.

Note that 12 in the figure is a chimney connected to the hot air heater 1.

Next, to explain the operation of the present invention, when the temperature thermo sensor 9 installed in the house 2 detects the temperature in the house below the set value, the electromagnetic switch 10
When the fan 8 is turned on and the motor 7 installed at the air suction port 3 of the hot air heater 1 is turned on, approximately 1/1/2 of the total suction amount is supplied to the hot air heater 1. 2 cold air is sucked in.

At about the same time, the fuel device 5 of the hot air heater 1
It is turned on, and the heat exchanger (not shown) such as the pot and the Erofine pipe is heated by the flame of the fuel gas.

Therefore, this sucked air is heated through heat exchange with the pot of the warm air heater 1 and the surface of the heat exchanger, and is converted into warm air.

After that, this warm air is sequentially blown into the vinyl duct 6, and the warm air is blown in an amount approximately equivalent to the total air volume of the so-called vinyl duct 6.
When the vinyl duct 6, which has been expanded by about 3 degrees, is gradually expanded as shown in Figure 3B, it becomes fully opened as shown in Figure 3C.

Then, warm air is supplied into the house 2 through the opening of the vinyl duct 6, and the room temperature gradually rises.When the room temperature inside the house 2 reaches a certain level, the temperature thermo sensor 9 The control unit 9a is turned off, and then the other electromagnetic switches 10a are turned off.

As a result, the two motors 7 and 7a stop almost simultaneously, and the fans 8 and 7a that are interlocked at this time,
8a stops.

Therefore, the intake of air into the warm air heater 1 is stopped, and at the same time, the blowing of hot air to the vinyl duct 6 is stopped, and the vinyl duct 6 contracts and becomes a so-called overlapping plate shape.

Through such operations, the amount of hot air blown to the vinyl duct 6 is controlled, and the vinyl duct 6
The expansion will be gradual.

Thereafter, the operation is similar to that described above, and by stopping the intake of air into the hot air heater 1 or adjusting the amount of hot air blown to the vinyl duct 6, the vinyl duct 6 can be expanded or contracted, and the house 2 can be expanded or contracted. It is controlled so that the heating is turned on and off repeatedly.

``Technology of the Invention'' As detailed above, the present invention has a configuration in which the motor installed in the air inlet of the hot air heater is expanded in at least two stages via a control device such as a sensor or a timer. be.

Therefore, the blowing of warm air to the vinyl duct is controlled in at least a two-stage manner, making it possible to suppress the crunching noise that occurs when the vinyl duct expands, and to reduce the noise. have an effect.

Similarly, when the vinyl duct is expanded by approximately 2/3 and the vinyl duct is heated and softened by warm air, air equivalent to the total amount of air is blown, causing noise. The effect is great.

In addition, the present invention can eliminate the various problems mentioned above based on the noise, and can be used by greenhouse farmers,
Noise pollution to neighboring residents can be reduced.

Furthermore, since the present invention does not have a configuration in which the vinyl duct is expanded rapidly, the vinyl duct is less likely to be damaged, which is very advantageous and is preferable from the viewpoint of resource saving.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a sectional view showing the entire house, Fig. 2 is a circuit diagram showing an example of the control device, and Fig. 3 A to C show the expanded state of the vinyl duct. FIG. 1... Warm air heater, 2... House, 3, 3a, etc.... Inlet, 4, 4a, 4b, etc.... Outlet, 5...
...Fuel system, 6...Vinyl duct, 7,7a...
...Motor, 8, 8a...Fan, 9...Temperature thermometer sensor, 9a...Temperature thermometer control unit, 1
0, 10a...Electromagnetic switch, 11...Timer,
A...control device.

Claims (1)

[Scope of Claim for Utility Model Registration] A hot air heater installed in a house, at least two air inlets installed in the hot air heater, and a motor drive installed in each of the at least two air inlets. and a fan made of a material that makes a sound when a large number of hot air blowers are expanded to blow hot air generated by the hot air heater equipped on the hot air heater into the house. a duct, a temperature thermo sensor that controls the operation of one of the two motors installed in the house and controls the stoppage of the two motors, and one of the two motors. A hot air heater device comprising: a control device equipped with a timer that controls the operation timing of another motor; and the temperature thermo sensor detects the temperature inside the house. When the detected value is below the set value, the one motor is activated to blow approximately 1/2 of the total amount of warm air into the duct made of a material that makes noise when the hot air is expanded. At the same time, the timer is input, and then, after the set time of this timer has elapsed, the other motor is activated to completely fill the duct made of a material that makes a sound when the warm air blows out. The inside of the house is heated by blowing air approximately equivalent to the amount of warm air blown, and then the temperature thermo sensor detects the temperature inside the house, and when the detected value is equal to or higher than a set value, the second temperature sensor detects the temperature inside the house. A noise prevention mechanism for a warm air heater device in a house, characterized by stopping the operation of the base motor.