JPH05196289A - Air conditioner - Google Patents

Abstract

PURPOSE:To enable an automatic removing of polluted air during operation by a method wherein a filter is arranged at an indoor air suction port of an indoor device and the number of operations of a blower for every specified time is increased. CONSTITUTION:An air conditioner in which an outdoor device 9 comprising a compressor 6, a heat exchanger 7 at non-utilized side and an expansion valve 8 at the outdoor device, and an indoor device 1 comprising a heat exchanger 3 at the utilization side, an expansion valve 2 at the indoor device and a blower 4 are connected by refrigerant pipes 11 and 12 is provided with a filter 5 and a control device 10. During operation, only the number of rotation of the blower 4 is regularly increased by the control device 10 and an amount of air is increased to cause indoor air to be supplied again into the room through the filter 5. With such an arrangement, cleaning characteristic against the polluted indoor air can be forcedly carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a control device capable of automatically changing the number of revolutions of an indoor unit and a filter capable of removing dust and smoke from an indoor air inlet.

[0002]

2. Description of the Related Art As disclosed in Japanese Unexamined Patent Publication (Kokai) No. 62-225842, a conventional device has a high heat capacity by setting an optimum air flow rate and air temperature according to the heat load in each room. Accurate room temperature control under load and reduction of blower power under low heat load can be possible, but it is possible to operate for a long time with low air volume, and dirt in the indoor air (dust, smoke, etc.) may accumulate was there.

[0003]

In the prior art, the air volume of the indoor unit is constant or the air volume of the indoor unit is operated for a long time, and the dirt (dust, smoke, etc.) of the room air may accumulate. It was In addition, during heating operation, when operating for a long time with a low air volume, temperature stratification occurs in the indoor space, causing a temperature difference between the ceiling surface and the floor surface.To eliminate this, the capacity of the air conditioner is increased. It was

An object of the present invention is to automatically remove dirt (dust, smoke, etc.) from indoor air at regular intervals during operation, and also by temperature stratification that occurs during heating operation and low air flow. The temperature near the ceiling surface is higher than the temperature near the floor surface. At this time, when you want to raise the temperature near the floor,
By increasing the rotation speed of only the blower of the indoor unit,
It can stir indoor air and raise the temperature near the floor. An object of the present invention is to improve energy saving because it can be dealt with only by increasing the rotation speed of the blower of the indoor unit.

[0005]

A filter is provided at an indoor air intake port of an indoor unit, and a control device for automatically increasing the rotation speed of a blower is provided at regular intervals.

[0006]

[Function] During operation of the air conditioner, by increasing the rotation speed of the indoor unit blower at regular intervals, the amount of air sucked through the filter provided in the indoor unit increases, so that the indoor air is forced to flow. It has the effect of removing dirt (dust, smoke, etc.).

During the heating operation, when the amount of air blown continuously is small, temperature stratification occurs inside the room, and a difference in temperature occurs between the floor surface and the ceiling surface. At this time, instead of increasing the capacity of the air conditioner, by periodically increasing only the rotation speed of the blower of the indoor unit, the indoor air is agitated and the temperature difference between the ceiling surface and the floor surface is eliminated. Energy consumption is improved because it is possible and does not require extra capacity.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

FIG. 1 shows a compressor 6, a non-use side heat exchanger 7,
An outdoor unit 9 composed of an outdoor unit expansion valve 8, an indoor unit 1 composed of a utilization side heat exchanger 3, an indoor unit expansion valve 2 and a blower 4 is connected to an air conditioner by refrigerant pipes 11 and 12, a filter 5,
It is a system block diagram which attached the control apparatus 10.

During operation, the control device 10 periodically increases only the number of revolutions of the blower 4 to increase the air volume so that the indoor air is supplied again to the room through the filter 5 Can be forcibly cleaned.

In the heating operation of an air conditioner having a control capable of automatically changing the air volume to the required amount according to the change of the indoor temperature, when the indoor temperature approaches the required temperature, there is a case of operating for a long time with a low air volume. At this time, the indoor temperature may increase (temperature stratification) as the indoor floor surface approaches the ceiling surface, so the control device 10 periodically increases only the rotation speed of the blower 4 to increase the air volume. As a result, the indoor air is agitated, the temperature difference between the air near the floor surface and the air near the ceiling surface disappears, and the temperature near the floor surface does not increase the capacity of the air conditioner. It is possible to increase the total energy saving effect.

[0012]

Since the present invention is constructed as described above, it has the following effects.

By periodically increasing the number of revolutions of the blower, the amount of air taken in through the filter is increased, so that the indoor air can be forcibly cleaned against dirt.

During the heating operation, when the amount of blown air is small, temperature stratification occurs inside the room, and a difference in temperature occurs between the floor surface and the ceiling surface. At this time, instead of increasing the capacity of the air conditioner, it is possible to stir the indoor air and eliminate the temperature difference between the ceiling surface and the floor surface by periodically increasing only the rotation speed of the blower of the indoor unit. As a result, no energy is required because no extra capacity is required.

[Brief description of drawings]

FIG. 1 is a system block diagram of an embodiment of the present invention.

[Explanation of symbols]

1 ... Indoor unit, 2 ... Indoor unit expansion valve, 3 ... Utilization side heat exchanger,
4 ... Blower, 5 ... Filter, 6 ... Compressor, 7 ... Non-use side heat exchanger, 8 ... Outdoor unit expansion valve, 9 ... Outdoor unit, 10 ... Control device, 11, 12 ... Refrigerant piping.

Claims (1)

[Claims] 1. A refrigeration cycle including a compressor, a non-use side heat exchanger, a pressure reducing device, and an indoor use side heat exchanger, and rotation of an indoor blower disposed on the indoor use side heat exchanger side. In an air conditioner equipped with a control device capable of changing the number, the operating rotation speed is increased at specific time intervals regardless of the set rotation speed of the indoor blower to actively agitate and ventilate the indoor air layer. An air conditioner characterized by being carried out.