JPH06341739A - Air conditioner - Google Patents

Abstract

PURPOSE:To obtain an air conditioner of which the capacity is improved, in which an outdoor-side heat exchanger is hardly frosted and which enables execution of an efficient and comfortable heating operation, by a method wherein dew sticking on the heat exchanger at the time of heating is shaken off by using a vibration generator. CONSTITUTION:An electric motor 2 having an eccentric rotating shaft and being used as a vibration generator is fitted on a side plate l of a heat exchanger 102 and the heat exchanger 102 is vibrated by electrifying the motor at the time of a heating operation. By this vibration, dew sticking on the heat exchanger 102 is shaken off forcibly. In this way, realization of an efficient and comfortable heating operation is enabled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of frost formation on a surface of a heat exchanger for an outdoor unit during a heating operation in winter in a heat pump type air conditioner.

[0002]

2. Description of the Related Art In recent years, in order to improve the efficiency of an air conditioner and the comfort of a room, prevention of frost formation on the outdoor heat exchanger during heating, reduction of defrosting time, and exposure to the heat exchanger. It is required to prevent the deterioration of ability due to attachment.

Conventionally, this type of air conditioner has generally been constructed as shown in FIG. The configuration will be described below with reference to FIG. As shown in the figure, the conventional air conditioner includes a compressor 101 and a heat exchanger 1.
02, the heat exchange blower 103 of the heat exchanger 102, the temperature sensor 104 for measuring the heat exchanger temperature attached to the heat exchanger 102, and the heat exchanger temperature and time measured by the temperature sensor 104. Defrost control circuit 106 for controlling the operation of the valve 105, and the suction pipe 10 of the compressor 101.
7, and a refrigeration circuit unit 109 including the discharge pipe 108 of the compressor 101.

In the above structure, the defrosting control circuit 106 determines the frosted state of the heat exchanger 102 from the heat exchanger temperature and time measured by the temperature sensor 104. Heat exchanger 1
When 02 is frosted, the defrosting control circuit 106 detects it and stops the blower 103 and opens the solenoid valve 105. As a result, the discharge pipe 108 and the low-pressure suction pipe 107 are made to communicate with each other, whereby the evaporation pressure of the heat exchanger 102, that is, the surface temperature of the heat exchanger 102 is raised, and the frost adhering to the heat exchanger 102 is melted and removed. . When the defrosting of the heat exchanger 102 is completed, the defrosting control circuit 106 detects this and releases the stop of the blower 103, closes the electromagnetic valve 105, and returns to normal operation.

As a method of melting and removing frost and ice by vibration, a method as disclosed in Japanese Patent Publication No. 4-2299 is also considered. The configuration will be described below with reference to FIG. As shown in the figure, a semiconductor material 110, an electrode 111 for obtaining a vibration of the semiconductor material 110, a power source 112, and the semiconductor material 110.
It is composed of ice and frost 113 attached to.

With the above configuration, the power source 112 and the electrode 111
As a result, the semiconductor material 110 to which a voltage is applied vibrates, and this vibration is transmitted to ice and frost 113, and friction melting removal is performed.

[0007]

In such a conventional air conditioner, the frosted state of the heat exchanger is judged, and if frosted, the surface temperature of the heat exchanger is raised to melt the frost. Since the method is adopted, by suppressing the amount of dew that adheres to the heat exchanger surface and deteriorates the heat exchanger efficiency of the refrigerant and air flowing in the heat exchanger and the air resistance of the heat exchanger. , Measures to prevent heating capacity deterioration and measures to delay defrosting operation start time by extending heat defrosting of the heat exchanger to extend continuous normal operation time and reduce defrosting frequency are not sufficient. There was a problem.

The present invention is intended to solve the above problems. By preventing dew on the surface of the heat exchanger, the heating capacity is prevented from deteriorating due to dew on the heat exchanger, and frost is not formed on the heat exchanger. It is an object of the present invention to provide an air conditioner that is difficult to operate and that enables efficient and comfortable heating operation.

[0009]

In order to achieve the above-mentioned object, the present invention provides a refrigeration circuit unit having a compressor, a heat exchanger, and a blower for heat exchange of the heat exchanger. The vibration generator for vibrating the exchanger is provided.

[0010]

With the above structure, the present invention makes it possible to vibrate the heat exchanger with the vibration generator to shake off the dew adhering to the surface of the heat exchanger, and suppress dew condensation and frost formation on the heat exchanger. It is a thing.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. The same parts as those of the related art are designated by the same reference numerals, and detailed description thereof will be omitted. As shown in the figure, it has a side plate 1 of the heat exchanger 102, an electric motor 2 as a vibration generator that is attached to the side plate 1 and has an eccentric rotating shaft, and a vibration damping function 3 by piping.

In the above structure, when the electric motor 2 is energized during the heating operation, the side plate 1 vibrates the entire heat exchanger.
Here, the other refrigeration circuits are vibration-proofed by the vibration-proofing function 3 by piping so that this vibration does not affect. When the dew adheres to the vibrating heat exchanger surface 102 by such a mechanism, the dew cannot follow the vibration and is shaken off, the growth of the dew is suppressed, and the amount of dew on the heat exchanger 102 is reduced. . As a result, the deterioration of the heating capacity due to dew is improved.

Since frost formation on the heat exchanger 102 is a fundamental cause of frost formation on the heat exchanger 102, the frost formation on the heat exchanger 102 is reduced by reducing the amount of frost formation. Hard to do. Therefore, it is possible to delay the time to enter the defrosting operation, extend the continuous normal operation time, and reduce the number of defrosting operations.

As described above, according to the air conditioner of the embodiment of the present invention, by vibrating the heat exchanger 102, the performance deterioration due to dew condensation is improved, and the heat exchanger 102 is improved.
It is possible to suppress frost formation on and to reduce the defrosting time, and to perform efficient and comfortable heating operation.

Although the heat exchanger 102 is constantly vibrated during the heating operation in the above embodiment, a vibration control device is provided to determine the dew condensation state of the heat exchanger 102 to determine the strength of vibration. By controlling it, more efficient operation becomes possible.

Further, although the electric motor 2 is used as the vibration generating device in the above-mentioned embodiment, the same effect can be obtained by using the piezoelectric element.

[0017]

As is apparent from the above description of the embodiments, according to the present invention, the vibration generator is used to vibrate the heat exchanger, thereby suppressing the dew condensation on the heat exchanger. This improves the deterioration of heating capacity due to dew,
It is possible to suppress the frost formation on the heat exchanger, delay the time to enter the defrosting operation, extend the continuous normal operation time, reduce the number of defrosting operations, and perform efficient and comfortable heating operation. An air conditioner that can be provided can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a frost-resistant device showing the configuration of an embodiment of the present invention.

FIG. 2 is a sectional view of an essential part of an air conditioner showing a configuration of a conventional example.

FIG. 3 is a cross-sectional view of essential parts showing the configuration of a conventional ice melting method example.

[Explanation of symbols]

 2 electric motor 101 compressor 102 heat exchanger 103 heat exchange blower 109 refrigeration circuit unit

Claims (1)

[Claims] 1. A rotary shaft eccentric as a vibration generator for vibrating the heat exchanger in a refrigeration circuit unit having a compressor, a heat exchanger, and a fan for heat exchange of the heat exchanger. An air conditioner equipped with an electric motor having: