KR101122664B1 - Refrigerator with relative humidity measuring instrument - Google Patents

Abstract

Disclosed is a relative humidity sensing refrigerator. The disclosed relative humidity sensing refrigerator includes: an inner pipe for guiding air introduced into an intake port to an internal heat exchanger, a partition wall having an insulating material installed in contact with the inner pipe, and a relative humidity of air flowing along the inner pipe and installed inside the insulating pipe; Characterized in that it comprises a measuring device for sensing.

Internal heat exchanger, inner passage, sensor element, measuring device, humidity sensor

Description

Relative Humidity Sensing Refrigerator {REFRIGERATOR WITH RELATIVE HUMIDITY MEASURING INSTRUMENT}

The present invention relates to a refrigerator, and more particularly, to a relative humidity sensing refrigerator which prevents water droplets from condensing on a humidity sensor by installing a measuring device inside a heat insulating material to maintain a temperature higher than the inside of the refrigerator.

In general, the refrigerator is a device to keep the freshness as possible by refrigeration or freezing the meat or vegetables or fruits and kimchi or the like.

The refrigerator passes through a compressor that compresses a gaseous refrigerant to provide a circulation force of the refrigerant in a liquid state of high temperature and high pressure, a condenser that forms heat exchange with the outside, and condenses the compressed refrigerant to a normal temperature and high pressure state, and passes the condensed refrigerant. It has a refrigerating cycle consisting of a capillary tube for converting the phase to low temperature and low pressure, and an evaporator passing through the refrigerant at low temperature and low pressure to form a heat exchange and converting the phase into a gas state and returning it to the compressor.

Sensor member for measuring the moisture inside the refrigerator is preferably installed on one side of the air flow.

The foregoing invention refers to the background of the art to which the present invention pertains, and does not mean the prior art.

In the conventional humidity sensor installed in the refrigerator, water condensation occurs on the surface of the humidity sensor due to a sudden change in temperature and humidity. Therefore, there is a need for improvement.

The present invention has been made by the necessity as described above, and an object of the present invention is to provide a relative humidity sensing refrigerator having improved operation reliability by preventing water droplets from forming on the surface of the humidity sensor without installing a separate heater member.

The relative humidity sensing refrigerator according to the present invention includes: an inner conduit for guiding air introduced into an intake port to an internal heat exchanger, a partition wall provided with an insulator installed in contact with the inner conduit, and air installed inside the insulator and flowing along the inner conduit It includes a measuring device for sensing the relative humidity of.

In addition, the measuring device preferably includes a connecting member for communicating with the inner conduit, the air pipe is moved, a body member having an inner space through which the air moved into the connecting pipe is circulated, and a sensor member installed in the inner space.

In addition, the connection pipe preferably includes a first connection pipe through which the air in the inner channel flows, and a second connection pipe through which the air introduced into the first connection pipe goes into the inner pipe.

In addition, the connecting pipe is preferably connected to the inner pipe located between the inlet and the internal heat exchanger.

In addition, the sensor member preferably includes a first dry bulb temperature sensor and a humidity sensor.

In addition, the inner pipe is preferably further provided with a second dry bulb temperature sensor for measuring the temperature of the air before passing through the internal heat exchanger.

As described above, the relative humidity sensing refrigerator according to the present invention, unlike the conventional invention by installing a sensor member on the inside of the heat insulating material, by maintaining the temperature around the sensor member higher than the air flowing inside the refrigerator, It is possible to provide a relative humidity sensing refrigerator having improved operation reliability by preventing water droplets from forming on the surface of the humidity sensor without installing a separate heater member.

Hereinafter, an embodiment of a relative humidity sensing refrigerator according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a side cross-sectional view showing the main portion of the relative humidity-sensing refrigerator according to an embodiment of the present invention, Figure 2 is a perspective view showing the measuring device shown in FIG.

A relative humidity sensing refrigerator according to an embodiment of the present invention includes a partition wall (40) having an inner conduit for guiding air introduced into the suction port (3) to an internal heat exchanger and a heat insulating material (42) installed in contact with the inner conduit. And a measuring device 10 installed inside the heat insulating material 42 to sense the relative humidity of the air flowing along the inner pipe.

The inner tube is connected to the suction port 3 through which the outside air flows to form an air passage.

The partition wall 40 is provided with a heat insulating material 42 to a predetermined thickness, a partition member 44 made of an aluminum plate or a metal plate is installed on one side of the heat insulating material 42.

The measuring device 10 installed inside the partition wall 40 spaced apart from the inner conduit includes a connecting conduit in communication with the inner conduit and an inner space 18 through which the air moved into the conduit is circulated. And a sensor member 20 installed in the body member 16 and the inner space 18.

The connecting pipe is connected to the inner pipe located between the inlet port 3 and the internal heat exchanger, and the first connecting pipe line 12 into which the air from the inner pipe flows in and the air introduced into the first connecting pipe line 12 into the inner pipe line. An outgoing second connector 14 is included.

The first connection pipe 12 and the second connection pipe 14 are formed in a thin tube shape of 5 mm or less, and the change in temperature or humidity according to the movement of air is made gradually.

When the air moved along the inner conduit moves from the lower side to the upper side, the first connecting conduit 12 is installed below the inner conduit and the second connecting conduit 14 is installed above the inner conduit.

The body member 16 adjusts the depth installed inside the heat insulating material 42 so that the temperature of the inner space 18 rises about 3 to 7 degrees above the temperature of the air flowing along the inner pipe.

Alternatively, the body member 16 is installed at a depth of 1/7 to 1/5 of the total thickness of the heat insulating material 42.

For this reason, when the air in the saturated humidity state inside the refrigerator reaches the sensor member 20, the temperature rises by about 3 to 7 degrees, so that no water clumping occurs in the sensor member 20.

The sensor member 20 installed in the inner space 18 includes a first dry bulb temperature sensor 22 and a humidity sensor 24.

In addition, the inner pipe is further provided with a second dry bulb temperature sensor 30 for measuring the temperature of the air before passing through the internal heat exchanger.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating state of the relative humidity-sensing refrigerator according to an embodiment of the present invention.

Some of the air flowing along the inner conduit through the inlet 3 is introduced into the body member 16 through the first connecting conduit 12.

The temperature and humidity of the air introduced into the inner space 18 are sensed by the humidity sensor 24 and the first dry bulb temperature sensor 22 of the sensor member 20 to calculate the relative humidity.

The air measured by the sensor member 20 is mixed with the flow of air flowing back to the inner pipe through the second connecting pipe 14 and flowing through the inner pipe to the inner heat exchanger.

The temperature of the air flowing through the inner pipe is also measured by the second dry bulb temperature sensor 30.

According to one embodiment of the present invention, by changing the installation position of the measuring device 10 including the sensor member 20 to the heat insulating material 42 inside, to prevent condensation generated in the sensor member 20 to operate reliability To improve.

On the other hand, when the humidity is displayed, based on the input value of the sensor that detects the door opening and closing of the refrigerator, if the door opening time is 30 seconds or more, the sensor measurement value is displayed on the display after the display delay is displayed for 2 minutes or more after the door is closed. do. If the door opening time is less than 30 seconds, the sensor measurement value is displayed on the display after 1 minute and 30 seconds.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

In addition, the connection device provided in the refrigerator has been described as an example, but this is merely exemplary, and the relative humidity measuring apparatus of the present invention may be used in a kimchi refrigerator, a freezer, a fan, and a humidifier, instead of the measuring device used in the refrigerator. .

Therefore, the true technical protection scope of the present invention will be defined by the claims.

1 is a side cross-sectional view showing a main portion of a relative humidity sensing refrigerator according to an embodiment of the present invention.

FIG. 2 is a perspective view of the measuring apparatus shown in FIG. 1.

<Description of Symbols for Main Parts of Drawings>

1: inner channel 3: inlet port

10: measuring device 12: first connector

14: second connecting passage 16: body member

18: inner space 20: sensor member

22: first dry bulb temperature sensor 24: humidity sensor

30: second dry bulb temperature sensor 40: partition wall

42: heat insulating material 44: partition member

Claims (6)

An inner conduit for guiding the air introduced into the inlet to the internal heat exchanger; A partition wall having a heat insulating material installed in contact with the inner pipe passage; And And a measuring device installed inside the insulation to sense the relative humidity of the air flowing along the inner conduit. The method of claim 1, wherein the measuring device, A connecting pipe passage communicating with the inner pipe passage for moving air; A body member having an inner space through which air moved to the connection pipe is circulated; And Relative humidity sensing refrigerator comprising a sensor member installed in the inner space. The method of claim 2, The connection pipe line is a humidity sensing refrigerator, characterized in that it comprises a first connection pipe through which the air in the inner pipe flows, and a second connection pipe through which the air introduced into the first connection pipe goes to the inner pipe. The method of claim 2, And the connection pipe is connected to an inner pipe located between the suction port and the internal heat exchanger. The method of claim 2, The sensor member is a humidity sensing refrigerator comprising a first dry bulb temperature sensor and a humidity sensor. The method of claim 1, And a second dry bulb temperature sensor measuring the temperature of the air before passing through the internal heat exchanger in the inner pipe.

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