JPS6186526A - Ventilation system changing amount of ventilation in accordance with consumption of gas - Google Patents

Abstract

PURPOSE:To optimize electric power consumption necessary for ventilation and improve energy saving effect by a method wherein air is supplied or discharged in accordance with the consumption of gas to obtain the exantness of the ventilation. CONSTITUTION:When cooking work is started in a kitchen and one or a plurality of gas instruments 1 are started to use, the flow amount of using gas is detected by a gas flow detector 10 and an output signal, corresponding to the flow amount of using gas, is outputted from the gas flow detector 10. A control signal, determining converted frequency corresponding to the output signal, is supplied from a converter 18 to an inverter control panel 15. In the inverter control panel 15, an electric power, supplied from a power panel 12 and provided with a commercial frequency, is converted into the electric power having the frequency indicated by the control signal. The amount of exhaust air, discharged out of an air discharging fan 4 to the outside of the kitchen through a suction 2 and an exhaust duct 3 is equalized to the logical amount of exhaust gas of the amount of using gas, on the other hand, the amount of supplying air, which copes with the amount of discharging air, is blown from a blow-off section 7 into the kitchen room through an air supplying fan 5 and an air supplying duct 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical field of the invention The present invention changes the amount of ventilation that can achieve good ventilation by appropriately supplying and exhausting air according to the amount of gas consumed. Regarding ventilation systems.

(0) Background of the technology Because gas appliances are used in kitchens, the need for ventilation is higher than in living spaces where gas appliances are not used, and good ventilation conditions must be maintained at a high level. This is required to improve the kitchen environment by providing a good working environment for the cooks working there and preventing the food from getting cold.

Furthermore, it is also required to reduce the power consumption used for such ventilation.

(c) Prior Art and Problems One conventional ventilation system is a constant air volume supply/exhaust system. This has the advantage of low initial cost, but since the air supply and exhaust volumes are constant, more ventilation (air supply and exhaust) than is necessary is often performed. Particularly in the winter, excessive ventilation (particularly air supply) can have a significant negative impact on kitchen workers and can cause food to become excessively cold.

There are ways to improve the shortcomings of this ventilation system, such as an air volume switching system using a pole change method or a variable air volume system using scroll damper control, but they lack the appropriateness to respond to the required air supply and exhaust volume, and the motor used for the air supply and exhaust Since it is used under constant rotation, there is still room for improvement from the perspective of energy saving.

The present invention was invented to solve the above-mentioned technical problem, and its purpose is to obtain appropriate ventilation by supplying and exhausting gas according to the amount of gas consumed, while also providing the necessary ventilation. An object of the present invention is to provide a ventilation system that changes the amount of ventilation in accordance with the amount of gas consumed, which can optimize power consumption and improve energy saving effects.

Structure of the Invention To achieve this object, the system of the present invention includes a gas consumption detector installed between a gas appliance used in a kitchen or the like and a gas supply source, and a gas consumption a converter that converts the output signal of the detector into a ventilation control signal, an air supply device and an exhaust device installed in the kitchen etc., and interlocks the air supply device and the exhaust device in response to the ventilation control signal. and a control means for producing the required amount of ventilation.

(-) Embodiments of the Invention The present invention will now be described in detail with reference to the accompanying drawings.

The accompanying drawings illustrate one embodiment of the invention. In this diagram,
1 is a gas appliance installed in a kitchen or the like. A combustion gas suction section 2 is installed above the gas appliance 1, and the suction section 2 is communicated via an exhaust duct 3 with the suction port of an exhaust fan 4 installed outside the kitchen room. Reference numeral 5 denotes an air supply fan installed outside the kitchen, which is communicated via an air supply duct 6 to a blowout section 7 installed at a suitable location inside the kitchen. Both the exhaust fan 4 and the air supply fan 5 are driven by electric motors, for example induction motors 8, 9, respectively.

The drive control system for these induction motors 8 and 9 is configured as follows. 10 is a gas flow rate detector installed between the gas meter 11 and the gas equipment 1. 12 is the power panel,
From this power panel, the power supply lines 13 and 14 are connected to the induction motor ta via the inverter control panel 15 and 16 compatible with the induction motor 8 and 9.
8.9 is connected. The inverter control boards 15,16 are interlocked via wire 17 for interlocking.

The inverter control panel 15.16 converts the commercial frequency from the power panel 12 into a desired frequency and supplies power to the induction motor 8.9. A control signal determining the desired frequency is transmitted to a transducer 18 which receives the output signal of the gas flow sensor 10.
It is configured to be generated from.

Next, the ventilation mode by the system of the present invention configured as described above will be explained.

Work has begun in the kitchen and one or more gas appliances have been turned off.
When the gas starts to be used, the flow rate of the used gas is detected by the gas flow rate detector 10, and an output signal corresponding to the used gas flow rate is outputted from the gas flow rate detector 10.

A control signal that determines the conversion frequency corresponding to the output signal is supplied from the converter 18 to the inverter control panel 15. The inverter control panel 15 converts power at a commercial frequency from the power panel 12 into power at a frequency indicated by the above-mentioned control signal. In addition, the inverter control panel 16 is interlocked and interlocked with the inverter control panel 15, but the mode of interlocking is preferably that the induction motor 8 is driven by the output of the inverter control panel 15, and the exhaust fan 4 exhausts the air. Inverter control panel 1 rather than exhaust air volume
It is preferable that the amount of air supplied by the induction motor 9 and the exhaust fan 5 driven by the output of the exhaust fan 6 is set to a value that is approximately 0% smaller.

For such supply/exhaust control, the control signal generated from the converter 18 is preferably set at the theoretical exhaust gas amount of the total gas consumption.

As described above, the amount of exhaust air exhausted from the exhaust fan 4 to the outside of the kitchen via the suction section 2 and the exhaust duct 3 is equal to the theoretical exhaust gas amount of the gas usage amount, while the amount of air supplied corresponding to that amount is the amount of air exhausted from the air supply fan 4. 5. The air is blown into the kitchen room from the air blowing section 7 through the air supply duct 6. Therefore, it is possible to accurately grasp the necessary supply/exhaust N (ventilation amount) in the kitchen and to perform ventilation with the minimum necessary ventilation amount. Therefore, the working environment in the kitchen is improved and energy saving effects can also be obtained.

Further, the control signal generated from the converter 18 is generated as a signal that can be used to perform settings such that ventilation can be performed at the required ventilation amount not only when gas is used in the gas appliance, but also when gas is not used. It is better to do so.

In the above embodiment, a case has been described in which the frequency of power supplied to the induction motor is changed, but for example, the voltage supplied to the induction motor may be changed. Other types of electric motors can be used if desired.

(G) Effects of the Invention As described above, according to the present invention, it is possible to: ■ set an appropriate amount of ventilation, ■ obtain energy saving effects, and ■ improve the working environment in rooms where gas appliances are used. Effects such as:

[Brief explanation of the drawing]

The accompanying drawings illustrate one embodiment of the invention. In the figure, 1 is the gas equipment, 2 is the suction part, 3 is the exhaust duct,
4 is an exhaust fan, 5 is an air supply fan, 6 is an air supply duct, 7
8.9 is the electric motor, 10 is the gas flow rate detector,
15 and 16 are inverter control panels, and 18 is a converter. Patent applicant Nieatsu Takenaka Co., Ltd. Agent Patent attorney Fumi Furuya:,) Wang □′−・
−;/

Claims (2)

[Claims] (1) A gas consumption detector installed between a gas appliance used in a kitchen or the like and a gas supply source, and a converter that converts the output signal of the gas consumption detector into a ventilation control signal; An air supply device and an exhaust device installed in the kitchen, etc., and a control means for interlocking the air supply device and the exhaust device in response to the ventilation control signal to produce ventilation with a required ventilation amount. A ventilation system that changes the amount of ventilation according to the amount of gas consumed. (2) The gas consumption amount detector is a gas flow rate detector, and the ventilation amount is a supply air amount smaller than the exhaust air amount by a predetermined value. A ventilation system that changes the stated ventilation amount depending on the gas consumption.