JP2510619Y2 - Sensor mounting structure in cooling storage - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor mounting structure in a cooling storage which is configured to be mounted on the wall surface of an inner box of the cooling storage by a sensor mounting member.

[0002]

2. Description of the Related Art As is well known, a cold box having a double box structure indirectly cooled by a heat conducting box has a refrigerating circuit for cooling a cooler, electric components housed in a machine room, and other accessories. It is composed of and. And operation buttons, display devices, etc. are provided on the surface of the machine room or the electrical equipment box,
The temperature signal from the sensor of the cooling storage is input to the temperature sensing device main body in the electrical equipment box to display the temperature and control the refrigeration circuit. The sensor S is held by a synthetic resin holder H as shown in FIG.
It is attached to the inner box U with screws N. The cold store
Although only a part is shown in FIG. 3, it is composed of an inner box U having good heat conductivity, an air passage T is provided on the outer periphery thereof, and the outside thereof is covered with a heat insulating box D. There is. Therefore, when the refrigeration circuit is operated and the air cooled by the cooler is circulated in the ventilation passage T by the blower, the inside of the cooling storage is cooled through the inner box U having good heat conductivity. By the way, when the door is opened and closed in the above cold storage, warm and moist air flows into the storage. Then, since there is a large temperature difference between the temperature of the inner box U having good thermal conductivity and the temperature of the inflowing air, the water content in the air becomes water drops and then becomes frost. When the frost melts due to an increase in the temperature inside the chamber when warm air flows in when the door is opened, or when it melts due to the defrosting operation, the water droplets are directed toward the drainage outlet along the inner box U with good thermal conductivity. Although flowing, as shown in FIG. 3, when the sensor S is directly attached to the inner box U having good heat conductivity, the water droplet M also remains attached to the sensor. If left
Freezing occurs when the temperature inside the refrigerator drops. Then, for example, even if the temperature inside the refrigerator rises due to opening and closing of the door, the ice does not melt immediately, so the temperature rise inside the refrigerator cannot be detected and the refrigeration circuit cannot be operated, so the temperature inside the refrigerator can be controlled accurately. Disappear. Further, since the wall surface of the cooling storage having the double-box structure is a part of the ventilation path T for the cooled air, the temperature near the wall surface of the inner box U is lower than the central portion inside the storage. The air cooled at the upper portion of the wall surface of the inner box U becomes a descending air flow because of its large specific gravity. Then, as it descends, it is further cooled, the flow velocity further increases, and the temperature difference between the central portion and the wall surface inside the refrigerator further increases. Then, the accurate temperature inside the refrigerator cannot be detected.

Therefore, various types of sensor mounting devices or sensor mounting structures have been proposed in the past for the purpose of solving the above problems or drawbacks. Particularly, as a document which is the prior art of the present invention, there is
28368, 48-9725, 51-1413.
No. 5 etc. can be mentioned. Mitsuko Sho 48-28368
No. 3 shows a temperature control device in which a thermostat is attached to a wall surface inside a refrigerator via a spacer. Also, Japanese Utility Model Publication No. 48-9725 discloses a refrigerator in which a thermoswitch is attached to a wall surface in a refrigerator with a supporting member, and the thermoswitch is covered with a protective cover.
The issue shows a refrigerator with a thermostat attached below the drainage receiver.

[0004]

[Problems to be solved by the device]
The temperature control device described in No. 8368 is attached to the wall surface inside the refrigerator via a spacer, but in the spacer between the wall surface and the temperature control device, water droplets and cold air bypass the spacer and descend. However, water drops adhered to the temperature control device to a greater or lesser degree, and the temperature control device was exposed to cold air, and the above-mentioned problems have not been solved. In addition, real public Sho 48-9
The thermoswitch described in No. 725 is covered with a protective cover, but since it is in contact with the wall surface of the cooled inner box, the thermoswitch cannot be accurately detected due to the influence thereof. In addition, the number of steps for attaching the protective cover is increased, and the number of parts is also increased. Furthermore, real public Sho 5
The thermostat of No. 1-14135 is provided below the drainage receiver, and since the drainage receiver also serves as the water receiver, it is advantageous in terms of the number of parts and man-hours, but the mounting position is limited. Will be done. In addition, there is a risk that the thermostat will be touched and damaged when, for example, food is taken in and out of the refrigerator. Therefore, the present invention has a sensor mounting structure in a cooling storage that is not contaminated by water drops flowing along the wall surface of the inner box of the cooling storage, cold air falling, etc., and is not affected by the cold air falling along the wall surface. It is intended to be provided.

[0005]

In order to achieve the above object, the present invention provides a sensor mounting structure configured to mount a sensor on a wall surface of an inner box of a cold storage by a sensor mounting member. The mounting member includes a connecting portion between a holding portion that holds the sensor and a fixing portion that is fixed to the wall surface of the inner box, and the connecting portion separates the sensor from the wall surface of the inner box by a predetermined distance. It has a predetermined length and has a smaller diameter portion than the holding portion in order to improve the flow of fluid such as water droplets and cold air. In the invention according to claim 2, in the sensor mounting structure configured to mount the sensor on the wall surface of the inner box of the cooling storage by the sensor mounting member, the connecting portion defines the sensor from the wall surface of the inner box. It is configured to have a predetermined length so as to be separated from the distance, and has a portion having a downward slope from the holding portion in order to improve the flow of fluid such as water droplets.

[0006]

Since the present invention is constructed as described above,
The fixed part of the sensor mounting member is mounted at a predetermined position on the wall surface of the inner box of the cooling storage with a screw, an adhesive or the like. Then, the holding unit holds the sensor. Then, the sensor is mounted on the wall surface of the inner box of the cooling storage at a predetermined distance from the wall surface of the inner box. Water droplets, cold air, etc. flow down through the smaller diameter portion than the holding portion. The device according to claim 2 operates in substantially the same manner, but in the device according to claim 2, since the connecting portion has a part having a downward slope, the water droplets flow down along the part having the downward slope.

[0007]

Embodiments of the present invention will be described below. FIG.
Although (a) shows the cooling storage 1, the refrigeration circuit for cooling the cooler, the electrical components housed in the machine room, and other accessories are not shown in FIG. The cooling storage chamber 2 includes an inner box 3 made of a good heat conductor, a ventilation path 4 provided outside the inner box 3 so as to surround the inner box 3, and upper, lower, side and rear surfaces of the ventilation path 4. The heat insulating walls 5, 6, and 7 that surround the Although not shown in the figure, a door having a heat insulating structure is provided in the front opening 8 so as to be openable and closable.

The sensor mounting member 10 according to the first embodiment of the present invention, as shown in FIGS. 1B and 1C, is a holding portion 11 for holding the sensor S, and this holding portion 11
A connecting portion 2 integrally formed with, for example, synthetic resin
1 and 21, and a fixed portion 20 that comes into contact with the wall surface of the inner box 3 when attached. The holding portion 11 is formed in a bifurcated shape from two upper and lower holding pieces 12 and 13 which are slightly narrower than the diameter of the sensor S. The space between the holding pieces 12 and 13 is slightly wider inside. Therefore, once the cylindrical circular sensor S is held between the holding pieces 12 and 13, it is elastically held. At the bottom of the holding portion 11, insertion holes for the two screws 14 and 15 for attachment are formed. The connecting portions 21 and 21 have a predetermined length, and in the present embodiment, the diameter is reduced in two stages as compared with the diameter of the holding portion 11. That is, the cross section has a circular shape, and the water droplet M flowing down or the cold air that is reduced in two steps toward the inner box 3 can easily bypass the diameter-reduced connecting portions 21 and 21 and fall. It has become.

Next, the operation of the above embodiment will be described. The sensor mounting member 10 is fixed to a predetermined height of the inner box 3 with screws 14 and 15 so that the holding portion 11 is horizontal. The screws 14 and 15 may be fixed with an adhesive.
Then, the upper and lower holding pieces 12 and 13 are unfolded to put the sensor S between the holding pieces 12 and 13. Alternatively, the holding pieces 12, 13
Insert against the elasticity of. By operating a refrigeration circuit (not shown), the air cooled by the cooler is blown by the blower 4
When the heat is circulated, the inside of the cooling storage 2 is a heat-conductive inner box 3
Is cooled through. At this time, even if, for example, a water droplet M drops along the inner box 3 from the dew receiving plate 9, the sensor S is held at a predetermined distance from the inner box 3 by the holding portion 11, so that the water droplet M is applied to the sensor S. It does not adhere and freeze to cause the problems described above. Further, since the sensor S is held by the holding portion 11 at a predetermined distance from the inner box 3, the sensor S does not come into contact with the descending cold air, and therefore an incorrect value is not measured. Furthermore, according to the present embodiment, since the connecting portions 21, 21 are reduced in diameter, the water droplet M
Even the cold air does not contaminate the sensor S, and the reduced diameter connecting portion 21 smoothly descends. Therefore, according to the present embodiment, even if the temperature of the inside 2 rises due to the opening and closing of the door, the inside 2 immediately returns to the set temperature, so that the freshness of the food during storage can be kept good. it can. Further, since the water droplet M smoothly descends through the reduced diameter of the connecting portion 21, the water droplet M does not drop onto the food material being stored, and the food material is not damaged. In addition, in (b) of FIG.
The falling state of the water droplet M is indicated by the symbol M, and the descending state of the cool air is indicated by the dotted arrow.

FIG. 2 shows a second embodiment of the present invention. The same members as those in the above-described embodiment are designated by the same reference numerals and will not be described below. According to the embodiment shown in FIG. 2A, the connecting portion 21 has a downwardly sloping portion toward the inner box 3, and the holding portion 11 in the attached state.
Are located above the fixed portion 20. However, also in this embodiment, the holding portion 11 is separated from the inner box 3 by a predetermined distance. Therefore, as in the above-described embodiment, the water droplets M, cold air, etc. do not contaminate. Further, since the connecting portion 21 has a downward slope, even if the water droplet M reaches the connecting portion 21, the water droplet M
Is guided to the inner box 3 by the connecting portion 21 and does not adhere to the sensor S. The shape of the connecting portion 21 is not limited to the example shown in the drawing, but may be bent in an arc shape or bent to have a corner.

In FIG. 2B, the holding portion 11 is the fixing portion 2.
Another embodiment is shown above 0. According to the present embodiment, the connecting portion 21 is formed so as to be lowered stepwise toward the inner box 3, and the fixing portion 20 is made of an adhesive.
It is fixed to. In this embodiment, the diameter of the connecting portion 21 is smaller than that of the holding portion 11. Also in this embodiment, since the connecting portion 21 is formed in a stepped shape, it has a downward slope portion as a whole. The connecting portion 21
Can also be implemented in the same manner by gradually lowering toward the fixed portion 20 side instead of the stepwise shape.

In FIG. 2C, the holding portion 11 and the fixing portion 2 are shown.
Another embodiment is shown in which the 0s are approximately the same height. In the present embodiment, the holding portion 11 and the fixed portion 20 are at the same height, but the connecting portion 21 is bent in an arc shape as a whole so that the lower portion has a convex shape, and has the convex portion 22. Two
1 has a downward slope portion toward the inner box 3. Therefore, the water droplet M that is about to flow from the inner box 3 to the holding portion 11 is cut off by the convex portion 22. Also in this embodiment, the diameter of the connecting portion 21 is small. The connecting portion 21
As long as it has a descending slope portion that guides the water droplet M, even if there is a portion that is convex upward, or even if it is bent so that convex portions are formed vertically, the same can be performed. .

[0013]

As described above, according to the first aspect of the present invention, the connecting portion of the sensor mounting member has a predetermined length for separating the sensor from the wall surface of the inner box by a predetermined distance. The sensor is configured to have a smaller diameter than the holding part in order to improve the flow of fluid such as water drops and cold air, so that the sensor is contaminated with water drops flowing down along the wall surface of the inner box of the cooling storage, falling cold air, etc. Never be done again,
The unique effect of the present invention is that it is not affected by the cold air that descends along the wall surface. According to the second aspect of the present invention, the connecting portion is configured to have a portion having a downward slope from the holding portion in order to improve the flow of fluid such as water droplets. There is also an effect that the flow sensor does not adhere to the direction away from the holding portion, that is, away from the sensor.

[Brief description of drawings]

FIG. 1 is a view showing a first embodiment of the present invention, (a) is a side sectional view showing the mounted state, (b) is an enlarged view of the vicinity of a sensor mounting member, and (c) is (b). FIG. 3 is a side view seen from the direction of the arrow.

FIG. 2 is a diagram showing a second embodiment of the present invention, in which (a)-
(C) is a side view which shows a different Example, respectively.

FIG. 3 is a side view showing a conventional example.

[Explanation of symbols]

1 Cooling storage 3
Inner box 10 Sensor mounting member 11
Holding part 20 Fixed part 21
Connecting part S sensor

Claims (2)

(57) [Scope of utility model registration request] 1. A sensor mounting structure configured to mount a sensor on a wall surface of an inner box of a cooling storage by a sensor mounting member, wherein the sensor mounting member includes a holding portion for holding the sensor and a wall surface of the inner box. A connecting portion is provided between the inner wall of the inner box and a fixing portion fixed to the inner box.
It has a specified length to allow
In order to improve the flow of fluid such as drops and cold air,
It is characterized by having a smaller diameter portion.
Sensor mounting structure for cooling storage. 2. A sensor mounting structure configured to mount a sensor on a wall surface of an inner box of a cooling storage by a sensor mounting member, wherein the sensor mounting member includes a holding portion for holding the sensor, and
A connecting part is provided between the fixing part fixed to the wall surface of the inner box, and the connecting part separates the sensor from the wall surface of the inner box by a predetermined distance.
In addition to being configured to a predetermined length to allow water drops
Etc. to improve the flow of fluid such as
It is specially configured to have an arranged portion.
Sensor mounting structure for cooling storage.