KR101907309B1 - Apparatus for measuring contamination and refrigerator having the same - Google Patents

Abstract

The present invention relates to a contamination measuring apparatus and a refrigerator having the same. The contamination measuring apparatus according to the present invention comprises: a measuring case for forming an outer appearance; the measurement surface for forming one surface of the measuring case and having a measurement port for measuring pollutants; an incident light path and a fluorescent path extending from the measurement port to the inside of the measurement case, respectively; a light emitting unit provided inside a light receiving path to irradiate predetermined light toward the measurement port; and a fluorescent unit provided inside the fluorescent pathe so as to detect a fluorescent signal by the light emitted from the light emitting portion. The incident light path may be formed at a predetermined angle (θ) which is an acute angle with the measurement surface, and the fluorescent path may be formed at an angle larger than the predetermined angle with the measurement surface.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contamination measuring device,

The present invention relates to a contamination measuring device and a refrigerator having the same.

Generally, a refrigerator is a household appliance that allows food to be stored at a low temperature in an internal storage room that is shielded by a door.

The refrigerator is provided with a plurality of storage rooms for storing the stored products. The storage room includes a refrigerator room for refrigerated storage of the stored product and a freezer room for freeze storage. One side of the storage chamber is opened to allow the storage of the stored product. A refrigerator door for selectively shielding the storage compartment is provided at one side of the storage compartment.

In addition, the refrigerator compartment and the freezer compartment are provided with various types of reservoirs for effectively storing the stored contents. For example, the refrigerator compartment and the freezer compartment may be provided with at least one shelf on which the storage is placed, or at least one basket in which the storage is received.

Thus, the storage that is seated or received in the reservoir must be kept clean and provided to the user. Therefore, it is necessary to measure the contamination state of the shelf or basket corresponding to the storage, and take measures against it.

In this connection, the present applicant has filed and registered the following documents.

(1) First Prior Art: Patent No. 10-1259636 (registered on Apr. 24, 2013), air purifier for refrigerator

The first prior art document relates to an air purifier for a refrigerator, and includes a filter unit composed of a plurality of filters for purifying air introduced through a suction port to purify the air. Air discharged through the filter unit can be discharged together with negative ions generated in the negative ion generator.

(2) Second Prior Art: Registration No. 10-1660745 (registered on September 22, 2016), refrigerator

The second preceding document relates to a refrigerator capable of detecting adenosine triphosphate (ATP) by an electrochemical method to monitor microorganisms and food scraps in a storage space in real time or periodically. Accordingly, the storage space and the contamination of the food stored in the storage space can be confirmed, and the storage space can be kept clean.

According to this prior art, the following problems arise.

(1) The above-mentioned first prior document does not have a measure for measuring the contamination inside the refrigerator, and the second preceding document requires an additional device configuration such as a pump and a chemical sample, so that excessive cost There is a required problem. That is, the prior art has a problem that a pollution measuring device is not provided or a pollution measuring device having no effect is provided.

(2) There is a problem that it is not possible to measure the pollution or it is difficult to measure the pollution, and accordingly, appropriate measures can not be taken.

In order to solve such a problem, the present embodiment aims to propose a contamination measuring device which is provided in a simple and movable form and installed in various devices such as a refrigerator to measure contamination.

Another object of the present invention is to provide a refrigerator having the contamination measuring device without any structural change.

The pollution measuring apparatus according to the present invention includes a measuring case for forming an outer appearance, a measuring surface forming one surface of the measuring case and having a measuring port for measuring contaminants, A light emitting portion provided inside the incident light path for irradiating predetermined light toward the measurement port, and a light emitting portion for detecting a fluorescent signal due to the light emitted from the light emitting portion, Wherein the light path is formed at a predetermined angle (?) Provided at an acute angle with the measurement surface, and the fluorescent path is larger than the predetermined angle (?) With the measurement surface May be formed at an angle.

A light receiving path extending from the measurement port to the inside of the measurement case, and a light receiving unit installed inside the light receiving path to detect light emitted from the light emitting unit.

The fluorescent passage may be disposed between the light receiving passage and the light receiving passage.

The light receiving path may be formed by inclining at the predetermined angle? In a counterclockwise direction on the measurement surface, and the light receiving path may be formed by inclining the light receiving path in the clockwise direction at the predetermined angle? .

The light emitting portion and the light receiving portion may be positioned symmetrically with respect to the fluorescent portion.

The measurement case may be formed as a rectangular parallelepiped having the measurement surface as one surface.

And a fluorescent filter provided inside the fluorescence passage to pass the fluorescence signal.

And an odor sensor detachably coupled to the measurement case.

And a display unit for visualizing the fluorescence signal detected by the fluorescence unit when the fluorescence signal is greater than or equal to a reference value and visualizing the fluorescence signal when the light sensed by the light receiving unit is lower than a reference value.

The display unit may visualize microbial contamination when the fluorescence signal is equal to or higher than a reference value, and may visualize general contamination when the reflectance is lower than a reference value.

The refrigerator according to the present invention includes the contamination measuring device.

Further comprising at least one shelf on which a predetermined storage is seated and the contamination measuring device may be seated on the shelf to measure contamination of the shelf.

The contamination measuring device may be seated on the shelf such that the measuring surface is in contact with the shelf.

According to the proposed embodiment, the pollution measuring apparatus of the present invention is provided in a simple movable form, and thus can be installed for pollution measurement at various places.

In addition, the pollution measuring apparatus can take optimum measures by separately measuring general pollution and microbial pollution. In addition, since the general pollution and the microbial pollution are separately displayed, there is an advantage that the user can be trusted.

In addition, the pollution measuring apparatus can measure both general contamination and microbial contamination with a single light source, and the manufacturing cost of the apparatus can be reduced.

In addition, since one light source and two light receiving portions are arranged in an optimal state, there is an advantage that the structure of the device can be simplified and miniaturized.

Further, the pollution measuring apparatus is relatively small in size, and has an advantage in that it does not require additional deformation in the installed apparatus.

In addition, since the time required for the contamination measurement by the pollution measurement apparatus is very short, the user can grasp the pollution and contact the user at a desired place.

1 is a view showing a pollution measuring apparatus according to an embodiment of the present invention.
2 is a cross-sectional view taken along line I-I 'of FIG.
FIG. 3 is a view showing the path of light in FIG. 2. FIG.
4 is a cross-sectional view taken along line I-I 'in accordance with another embodiment of the present invention.
5 is a view showing a pollution measuring apparatus according to another embodiment of the present invention.
6 is a view illustrating a refrigerator having a pollution measuring device according to an embodiment of the present invention.
FIG. 7 is an enlarged view of 'A' in FIG. 6. FIG.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept.

FIG. 1 is a view showing a contamination measuring apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line I-I 'of FIG.

As shown in FIGS. 1 and 2, the contamination measuring device according to the present invention includes a measuring case 1 formed as an outer appearance of a substantially rectangular parallelepiped. The shape of the measurement case 1 is merely an example, and the measurement case 1 may be formed in various shapes.

On one surface of the measurement case 1, a measurement port 11 for measuring a pollutant is provided. At this time, one surface of the measurement case 1 on which the measurement port 11 is formed is referred to as a measurement surface 10.

In FIG. 1, the contamination measuring device is installed so that the measuring surface 10 is disposed at the bottom. In such an installation, it is possible to measure the contaminants on the floor surface. That is, the pollution measuring apparatus can measure the pollutant by arranging the measuring surface 10 to be in contact with the surface for measuring the pollutant.

Since the contamination on the bottom surface is generally measured in many cases, the measurement case 1 may be provided in a shape that can be installed with the measurement surface 10 as a bottom surface. For example, it may be provided in various shapes such as a rectangular parallelepiped, a cylindrical shape, and a triangular pyramid shape as shown in Fig.

Accordingly, the arrangement of FIG. 1 is only an embodiment, and the contamination measuring device can be arranged in various ways such that the measurement surface 10 is located on the upper side, the side surface, or the like.

In addition, a plurality of passages are provided in the measurement case 1. The surface of each passage may be provided with an oxidized material, for example, an oxidized metal. Since each passage functions as a path through which light travels, the surface is oxidized to prevent reflection of light.

Oxidation treatment causes the surface to be opaque or dark so that irregularly reflected light is absorbed without being reflected. The diffracted light is not reflected again, so that it does not affect the path of the predetermined light, so that the measurement can be performed more accurately.

At this time, the plurality of passages may be provided so as to be in contact with the measurement port 11, respectively. That is, the plurality of passages may extend from the measurement port 11 to the inside of the measurement case 1, respectively.

The plurality of passages include an incident light passage (20), a light receiving passage (30), and a fluorescent passage (40). Particularly, the fluorescent passage 40 is disposed between the light receiving passage 20 and the light receiving passage 30.

As shown in FIG. 2, the light incident path 20 and the light receiving path 30 are inclined at a predetermined angle in the measurement opening 11. In particular, the light incident path 20 and the light receiving path 30 are inclined and extended to correspond to each other.

In detail, the incident light passage 20 is inclined at a predetermined angle (?) In the counterclockwise direction on the measuring surface 10 and extends in the measuring hole 11. On the other hand, the light receiving path 30 is inclined at a predetermined angle (?) In the clockwise direction on the measurement plane 10 and extends in the measurement aperture 11.

At this time, the predetermined angle? Is provided at an acute angle, for example, may be 60 degrees.

2, the fluorescent passage 40 is perpendicular to the measurement surface 10, that is, at an angle of 90 degrees with respect to the measurement surface 10, and extends in the measurement aperture 11 .

It is not necessary that the fluorescent passage 40 and the measurement surface 10 are perpendicular to each other and the fluorescent passage 40 is disposed between the light receiving passage 20 and the light receiving passage 30 Do. Therefore, it can be understood that the fluorescent passage 40 is formed to be inclined at an angle larger than the predetermined angle? In the clockwise or counterclockwise direction on the measurement surface 10.

A light emitting portion 22, a light receiving portion 32, and a fluorescent portion 42 are provided in the measurement case 1.

The light emitting unit 22 may be installed in the incident light path 20 to irradiate predetermined light. Specifically, the light emitting portion 22 is provided in the incident light path 20 so as to irradiate light toward the measurement port 11.

The light emitting unit 22 includes a laser diode (LD). The laser diode may emit light having a predetermined wavelength value or a wavelength range. For example, the predetermined wavelength value may be 405 nm and the wavelength range may be 395 to 415 nm.

The output of the laser diode may have a value less than the set output. If the output of the laser diode becomes too high, a problem may occur that the measurement object is destroyed before measurement. For example, the set output value may be 20 mW.

Although not shown in FIG. 2, the incident light path 20 may further include an incident light lens and an incident light filter. The incident light lens functions to collimate the light emitted from the light emitting unit 22. The incident light filter has a function of passing only a predetermined wavelength region of the light emitted from the light emitting unit 22 .

The light receiving unit 32 may be installed in the light receiving passage 30 to sense the light emitted from the light emitting unit 32. In detail, the light receiving unit 32 is installed in the light receiving passage 30 so as to sense the light irradiated from the light emitting unit 22 and reflected by the measuring aperture 11. [

The light receiving unit 32 includes a photodiode (PD). The photodiode can sense light of a predetermined wavelength value or a wavelength range.

At this time, the light receiving unit 32 is provided to sense the light of the wavelength emitted from the light emitting unit 22. For example, when the light emitting unit 22 emits light having a wavelength of 405 nm, the light receiving unit 22 is provided to sense light having a wavelength of 405 nm.

Although not shown in FIG. 2, a light receiving lens and a light receiving filter may be additionally provided in the light receiving passage 30. FIG. The light receiving lens and the light receiving filter can be understood as a configuration having a function similar to that of the above-mentioned incident lens and the above-mentioned incident light filter.

The fluorescent portion 42 may be installed in the fluorescent passage 40 to sense the light emitted from the light emitting portion 32. The fluorescence unit 42 is installed in the fluorescence passage 40 so as to sense the fluorescence signal emitted from the measurement unit 11 by being irradiated from the light emitting unit 22. [

The fluorescence unit 42 may be a photodiode that senses light having a wavelength value or a wavelength range set with the light receiving unit 32. However, unlike the light-receiving unit 32, the fluorescent unit 42 is provided to sense a predetermined fluorescent signal.

The fluorescence signal is generated when a microorganism or a bio-derived substance is irradiated with light. In detail, riboflavin is included in the microorganism or the bio-derived substance. The riboflavin can be understood as a coenzyme contained in microorganisms. For example, when the riboflavin receives light having a wavelength of 405 nm, it emits light having a wavelength of 565 nm, that is, a fluorescence signal.

Further, the fluorescent passage 40 may further include a fluorescent filter 44. The fluorescence filter 44 functions to pass light corresponding to the fluorescence signal. In other words, it functions to block a signal other than the fluorescence signal.

For example, the fluorescent filter 44 may function to prevent a wavelength region of the light emitted from the light emitting portion 22 from passing therethrough. Therefore, among the light emitted from the light emitting unit 22, the light reflected by the fluorescent passage 40 can be filtered through the fluorescent filter 44.

Although not shown in FIG. 2, a fluorescent lens may be further provided in the fluorescent passage 40. The fluorescent lens may perform the same function as the light-incident lens and the light-receiving lens described above.

Hereinafter, the contamination measurement by the configuration of the pollution measuring apparatus will be described in detail. Particularly, FIG. 3 shows a state in which the bottom surface and the measurement surface 10 are in contact with each other so as to measure the contaminants on the bottom surface.

FIG. 3 is a view showing the path of light in FIG. 2. FIG.

As shown in FIG. 3, the measuring surface 10 is disposed so as to be in contact with a bottom surface containing contaminants C, and the contaminant C is measured through the measuring port 11 And can be disposed inside the case 1. That is, the contaminant C is measurably disposed in the incident light path 20, the light receiving path 30, and the fluorescent path 40.

Referring to Fig. 3, the path of the light L1 irradiated by the light emitting portion 22 will be described. Light having a predetermined wavelength is irradiated on the light emitting portion 22 and the irradiated light L1 reaches the measuring aperture 11 along the incident light path 20 as described above. That is, the pollutant C disposed in the measurement port 11. [

At this time, the bottom surface provided with the contaminant C, that is, the surface for measurement may be formed of a material that reflects at least a part of the irradiated light. Therefore, the contaminant C May be reflected at the same reflection angle [theta].

The reflected light L2 is directed toward the light receiving passage 30 and reaches the light receiving portion 32 and can be sensed. At this time, the predetermined reflectance can be calculated through the amount of the light L1 irradiated by the light emitting portion 22 and the amount of the light L2 reaching the light receiving portion 32.

Therefore, it is possible to measure the amount of the contaminant (C) by comparing the reflectance measured when the contaminant (C) does not exist and the measured reflectance. Therefore, when the reflectance is relatively high, it can be determined that the pollutant C is small and the reflectance is relatively low, that the pollutant C is large.

As described above, the contamination measured by the information sensed by the light receiving unit 32 is referred to as 'general contamination'.

At this time, when the contaminant C includes a microorganism including riboflavin, the contaminant C generates a fluorescent signal L3 by the irradiated light. In Fig. 3, a fluorescent signal is shown by a dotted line.

Since the fluorescence signal L3 is radiated in all directions, at least a part of the fluorescence signal L3 can be transmitted to the fluorescence passage 40. [ That is, the fluorescence signal L3 can be detected by reaching the fluorescence unit 42 through the fluorescence filter 44.

At this time, it is possible to determine the amount of the contaminant C, that is, the microorganism, including the riboflavin, by the amount of the fluorescent signal L3 reaching the fluorescent unit 42. The contamination measured by the information sensed by the fluorescence unit 42 is referred to as " microbial contamination ".

As a result, the degree of contamination can be determined variously as the plurality of light-receiving units 32 and 42 detect the light L1 emitted from the one light-emitting unit 22. Specifically, the 'microorganism contamination' can be determined by measuring the reflectance through the light receiving unit 32 to determine 'general contamination', and measuring the fluorescence signal L3 through the fluorescence unit 42.

Since the detection by the light receiving unit 32 and the fluorescent unit 42 is independent of each other, contamination can be determined using only one of the light receiving unit 32 and the fluorescent unit 42 .

For example, when information on microbial contamination is unnecessary, 'general contamination' can be determined using only the light emitting unit 22 and the light receiving unit 32. At this time, the contamination measuring device may be formed by omitting the fluorescent passage 40 including the fluorescent part 42. In addition, the fluorescence passage 40 may be closed or the detection by the fluorescence unit 42 may be omitted.

On the other hand, if only microbial contamination is concerned, 'microbial contamination' can be determined using only the light emitting unit 22 and the fluorescent unit 42. At this time, the contamination measuring device may be formed by omitting the light receiving passage 30 including the light receiving portion 32. Such a formation is shown in Fig.

As shown in FIG. 4, only the incident light passage 10 and the fluorescent passage 40 are formed in the case 1 to measure microbial contamination.

In detail, the incident light passage 10 is formed by inclining at a predetermined angle (?) From the measurement plane 10, and the light emitting unit 22 is provided with light having a predetermined wavelength toward the measurement aperture 11 (L1).

The fluorescent passage 40 is formed at an angle larger than the predetermined angle θ on the measuring surface 10 and the fluorescent portion 42 is disposed on the measuring surface 10 in such a manner that the contaminant C And detects the fluorescence signal C generated from the fluorescence signal.

The embodiment of the pollution measuring apparatus has been described above. However, the pollution measuring apparatus according to the present invention may further have various functions. Hereinafter, one embodiment will be described.

5 is a view showing a pollution measuring apparatus according to another embodiment of the present invention.

As shown in FIG. 5, the pollution measuring apparatus according to the present invention may include an odor sensor 50. The odor sensor 50 may be detachably coupled to the measurement case 1.

The odor sensor (50) is provided to sense a predetermined odor generated in the surroundings. For example, the odor sensor 50 may be configured to detect malodor originating from organic volatiles such as ethylene gas generated by food spoilage.

The user can grasp the degree of contamination more on the basis of the information sensed by the odor sensor 50 and the information sensed by the light receiving unit 32 and the fluorescent unit 42, .

In addition, the contamination measuring device according to the present invention may further include a temperature sensor, a dust sensor, and the like to measure information about a degree of contamination.

The contamination measuring apparatus may include a power source, a display unit, a communication unit, and the like. If necessary, the pollution measuring apparatus may be operated, the result of measurement by the pollution measuring apparatus may be visualized, .

In addition, general contamination and microbial contamination detected by the light receiving unit 32 and the fluorescent unit 42 can be displayed or transmitted in different ways. For example, a display unit for visualizing predetermined light is provided, so that red can be visualized in the case of general contamination, and orange can be visualized in the case of microorganism contamination.

As described above, the pollution measuring apparatus according to the present invention is not limited to the installation site. That is, it can be installed at any place where measurement is required. Hereinafter, a case where the contamination measuring device is installed in the refrigerator will be described as an example.

FIG. 6 is a view showing a refrigerator having a pollution measuring device according to an embodiment of the present invention, and FIG. 7 is an enlarged view of 'A' in FIG.

As shown in FIG. 6, the refrigerator 100 according to the embodiment of the present invention includes a main body 110 forming an outer appearance.

The front surface of the main body 110 is opened so that a refrigerating chamber 120 and a freezing chamber 130 are formed therein. 6, the refrigerating compartment 120 is formed at an upper portion of the freezing compartment 130 and is partitioned by the compartment wall 102. As shown in FIG.

The shape of the refrigerator 100 is an example, and the refrigerator 100 of the present invention may be provided in various forms. For example, the freezing chamber 130 may be formed above the refrigerating chamber 120, or the freezing chamber 130 and the refrigerating chamber 120 may be arranged in parallel with each other.

The refrigerator 100 includes a refrigerator compartment door 125 rotatably coupled to the front of the refrigerating compartment 120 and a freezing compartment door 135 provided to be pulled out forward of the freezing compartment 130. The shape of such a door is also exemplary and may be provided in various forms.

The refrigerator compartment door 125 may be provided on both sides of the refrigerating compartment 120 and may be provided in a pair. The refrigerator compartment door 125 is provided with a handle (not shown) that can be held by the user. The user can rotate the refrigerator compartment door 125 in one direction through the handle (not shown) to open the refrigerator compartment 120 as shown in FIG.

One freezing chamber door 135 is provided and a handle 137 is provided on the upper portion. The user can open the freezing chamber 130 as shown in FIG. 6 by rotating the freezing chamber door 135 forward through the handle 137.

In addition, the refrigerator compartment door 125 may be provided with a storage unit 147 provided to provide water or ice to a dispenser device (not shown) operable to extract water or ice. As shown in FIG. 6, the storage unit 147 may be provided in any one of the pair of refrigerating compartment doors 125.

Various storage materials are stored in the refrigerating compartment 120 and the freezing compartment 130 and the refrigerating compartment 120 and the freezing compartment 130 include various storage devices for effectively storing the contents. Hereinafter, various types of reservoirs provided in the refrigerating compartment 120 and the freezing compartment 130 will be exemplarily described.

A door pocket 150 is provided on the rear surface of the refrigerator door 125 in which the dispenser device 140 and the storage unit 147 are not formed. As shown in FIG. 3, the door pocket 150 may be provided in the refrigerator door 125 in a variety of shapes. Generally, the door pocket 150 may be provided with water, drinks, or the like.

The refrigerating chamber 120 may include at least one shelf 160 for partitioning the storage space of the refrigerating chamber 120. Although one shelf 160 is shown in FIG. 3, a plurality of shelves 160 may be provided and detachably installed. The user can effectively use the storage space divided into the shelves 160 according to the usage form.

In addition, the refrigerator compartment 120 may be provided with a small basket 170 for storing a predetermined storage. As shown in FIG. 6, the small basket 170 may be provided at a lower portion of the refrigerating chamber 120. The small basket 170 may be formed to be transparent so that the user can check the stored contents.

The freezer compartment 130 may include a compartment 180 for receiving a predetermined storage. The compartment 180 may be provided with a front surface so that the user can easily access stored contents.

In addition, the freezing chamber 130 may be provided with an ice basket 190 for storing ice and the like. In the ice basket 190, a relatively large amount of ice can be stored and provided to the user.

In addition, the freezer compartment 130 may be provided with a basket 200 in which a relatively large amount of stored food is stored. The basket 200 is installed on the front surface of the freezer compartment door 135 so that the basket 200 can be discharged to the front as the freezer compartment door 135 is rotated.

As described above, the refrigerator 100 is provided with various types of reservoirs. The pollution measuring apparatus according to the present invention can be installed in a reservoir requiring measurement to measure pollutants. That is, the contamination measuring device may be installed in any one of the door pocket 150, the shelf 160, the small basket 170, the compartment 180, the ice basket 190, and the basket 200 Can be installed.

6 and 7 illustrate a pollution measuring device installed in the shelf 160. FIG. The first storage 210 and the second storage 220 stored in the shelf 160 are also shown for the sake of explanation.

As described above, the measurement case 1 of the contamination measuring device is arranged such that the measurement surface 10 is in contact with the surface for measurement. 6 and 7, the measurement case 1 is arranged so that the measurement surface 10 is disposed on the lower surface and is in contact with the shelf 160. As shown in FIG.

At this time, the first storage 210 may be disposed adjacent to the measurement case 1. The first stored product 210 may be regarded as a product having a high possibility of causing contaminants such as a kimchi passage. That is, the contamination measuring device can be disposed adjacent to the storage material which is likely to cause the pollutant, so that contamination can be effectively measured.

7, the pollution measuring device measures the pollutants such as the kimchi to be discharged from the first storage 210. [ Further, the pollution measuring apparatus can be used more advantageously because it can measure invisible pollutants.

The second storage 220 can be understood as a small-sized general milk box stored in the refrigerating chamber 120. As shown in FIG. 6, the pollution measuring device according to the present invention is provided to be smaller than the small-sized second storage material 220.

That is, the pollution measuring device may be installed so as not to interfere with the stored contents stored in the refrigerator 100. In addition, even in the state where a large amount of stored matter is disposed, it can be disposed in the refrigerator 100 and the contamination can be measured.

Further, the time taken for the contamination measuring device to be placed in a predetermined place to measure the contamination is only several seconds. Therefore, the user can move the contamination measuring device and measure the contamination in real time. The contamination measuring device 120 may be disposed inside the refrigerating compartment 120 by opening the refrigerating compartment 120 and measuring the contamination of the refrigerating compartment 120, So that the refrigerating chamber 120 can be closed.

In FIGS. 6 and 7, the place where the contamination measuring device is installed is described using a refrigerator as an example. As described above, since the pollution measuring apparatus according to the present invention is small in size and takes a short time to measure, the pollution can be measured at various places required by the user.

1: Measurement case 10: Measuring surface
11: Measuring aperture 20:
22: light emitting portion 30: light receiving passage
32: light receiving section 40: fluorescent passage
42: Fluorescent section 44: Fluorescent filter
50: odor sensor 100: refrigerator
160: Shelf

Claims (13)

A measurement case for forming an appearance;
A measurement surface forming one surface of the measurement case and provided with a measurement port for measuring pollutants;
A light receiving passage, a fluorescent passage and a light receiving passage each extending from the measurement port to the inside of the measurement case;
A light emitting portion provided inside the light receiving passage to irradiate a predetermined light toward the measurement port; And
A fluorescence unit installed inside the fluorescence passage for sensing a fluorescence signal by the light emitted from the light emitting unit; And
A light receiving unit installed inside the light receiving path to sense the light emitted from the light emitting unit; / RTI >
The light emitted from the light emitting portion reaches the measurement port along the incident light path (L1)
The light reflected from the measurement port reaches the light receiving portion along the light receiving path (L2)
The fluorescence signal generated in the measurement port reaches the fluorescence part along the fluorescence path (L3)
The amount of the pollutant disposed in the measurement port is measured based on the amount of the light L1 emitted from the light emitting unit and the amount of the light L2 reaching the light receiving unit,
Wherein the microbial contamination is determined by measuring the amount of the contaminant containing riboflavin by the amount of the fluorescent signal (L3) reaching the fluorescent unit. The method according to claim 1,
Wherein the incident light path is formed at a predetermined angle (?) Provided at an acute angle with the measurement surface,
Wherein the fluorescence passage is formed at an angle larger than the predetermined angle (?) With the measurement surface. The method according to claim 1,
And the fluorescent passage is disposed between the light receiving passage and the light receiving passage. 3. The method of claim 2,
Wherein the incident light path is formed at a predetermined angle (?) In a counterclockwise direction on the measurement plane,
Wherein the light receiving path is formed at a predetermined angle (?) In a clockwise direction on the measurement surface. The method according to claim 1,
Wherein the light emitting unit and the light receiving unit are positioned symmetrically with respect to the fluorescent unit. The method according to claim 1,
Wherein the measurement case is formed of a rectangular parallelepiped having the measurement surface as one surface. The method according to claim 1,
And a fluorescence filter provided inside the fluorescence passage to pass the fluorescence signal. The method according to claim 1,
And an odor sensor detachably coupled to the measurement case. The method according to claim 1,
When the fluorescence signal detected by the fluorescence unit is equal to or higher than a reference value,
And a display unit for visualizing the light detected by the light receiving unit when the light is less than a reference value. 10. The method of claim 9,
The display unit includes:
If the fluorescence signal is above the reference value, microbial contamination is visualized,
Wherein the controller is configured to visualize general contamination when the light sensed by the light receiver is below a reference value. delete delete delete

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