JP4827420B2 - Cooling storage - Google Patents

Description

  The present invention relates to a cooling storehouse having a function of forcibly evaporating wastewater such as defrost water and exhausting it.

For example, in commercial refrigerators, waste water such as defrost water is stored in an evaporating dish provided on the bottom surface of the refrigerator body, and this is forcibly evaporated by heating means such as a heater and then exhausted. (For example, refer to Patent Document 1). Moreover, what vapor | stimulated vaporization was promoted by discharging such a vapor | steam through the exhaust passage which stood up, for example in the back wall of the refrigerator main body, and discharged | emitted from the exhaust port of the upper surface is also well-known.
Japanese Utility Model Publication No. 61-123377

On the other hand, this type of refrigerator is often installed with the back face close to the wall surface of a room such as a kitchen, which means that the steam exhaust port is arranged near the wall surface. In addition, in the case where a machine room containing a refrigeration apparatus or the like is provided on the upper surface of the refrigerator body, the panel constituting the machine room may come close to the exhaust port.
In the case described above, there is a problem that the steam discharged from the exhaust port immediately contacts the wall surface or the machine room panel to condense, and drops when the amount increases.
The present invention has been completed based on the above circumstances, and an object of the present invention is to suppress condensation on a wall surface or the like by steam that is forcibly evaporated as much as possible.

According to the first aspect of the present invention, an evaporating dish for collecting drainage and evaporating by heating means is provided on the bottom surface of the storage body, and an exhaust passage for circulating steam is provided in the peripheral wall of the storage body. An exhaust port that is formed so as to stand up in the form of an opening on the lower surface and that is an outlet of the exhaust passage is provided on the upper surface of the storage body, and the evaporating dish has a lid plate with a steam vent hole. The vapor vent hole of the cover plate is aligned with the lower surface opening of the exhaust passage without leaking, and a vapor diffusion box is provided on the upper surface of the exhaust port, and the bottom surface of the vapor diffusion box A through hole communicating with the exhaust port for introducing the steam is formed in a partial area of the steam diffusion chamber, and a plurality of discharge holes are formed on the upper surface of the vapor diffusion box at positions deviating from the position directly above the through hole. The outlets are dispersed Characterized in place where the structure is formed.

The invention of claim 2 is characterized in that, in the invention of claim 1, the total opening area of each discharge port is set to be larger than the opening area of the through hole .
The invention according to claim 3, in what according to claim 1 or claim 2, wherein the vapor diffusion box includes a receiving box for the through hole is formed and at least the upper surface is opened, the open surface of the receiving box And a cover on which the discharge port is formed is formed so as to be separable and formed.
According to a fourth aspect of the present invention, in the cover according to any one of the first to third aspects, the lid plate placed on the evaporating dish has the steam vent and the peripheral wall of the storage body. It is characterized in that a drainage hole is formed which is aligned with the lower surface opening of the drainage channel formed inside without leaking .

<Invention of Claim 1>
Vapor evaporated from the evaporating dish is pulled up by the exhaust passage in the peripheral wall of the storage body, and then discharged from the exhaust port opened on the upper surface of the storage body. This steam is passed through the through hole into the vapor diffusion box. Once received, it is dispersed and discharged from each discharge port.
By providing a vapor diffusion box, the vapor is discharged in a low concentration state, and even if there are walls or panels in the vicinity, it is avoided that a large amount of vapor is concentrated and touched, resulting in condensation It is prevented. Since no discharge port is formed immediately above the exhaust port, dust or the like can be prevented from entering the exhaust passage.

<Invention of Claim 2>
Steam is discharged smoothly without stagnation.
<Invention of Claim 3 >
The vapor discharged from the exhaust port is once received by the vapor diffusion box through the through hole of the receiving box, and is distributed and discharged from a plurality of discharge ports formed in the cover. Since the vapor diffusion box can be divided into a receiving box and a cover, the inside of the box can be sufficiently cleaned .

<Embodiment>
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In this embodiment, the case where it applies to the vertical refrigerator for business is illustrated, First, the whole structure of the refrigerator R is demonstrated with reference to FIG. The refrigerator main body 10 is constituted by a vertically long heat insulating box body having a front opening, and is supported by legs 11 erected at the four corners of the lower surface, and the inside is a storage chamber 12. The front opening of the storage chamber 12 is partitioned into two upper and lower openings 14 by a partition frame 13, and a heat insulating door 15 is attached to each opening 14 so as to be swingable.

A machine room 17 formed by assembling a panel 17A is provided in the upper surface 10A of the refrigerator main body 10, specifically, a portion excluding a predetermined region on the back surface side of the upper surface 10A, and a refrigeration apparatus 18 is installed therein. ing. The refrigeration apparatus 18 includes a compressor 19, a condenser 20, and the like, and is attached to a heat-insulating base 21 as a unit so that the base 21 closes the window hole 23 on the ceiling wall of the storage chamber 12. It is attached.
A drain pan 24 also serving as an air duct is stretched on the lower surface side of the window hole 23 in the ceiling portion of the storage chamber 12, and a cooler chamber 25 is formed above the drain pan 24. The bottom surface of the drain pan 24 is formed to have a downward slope toward the inner edge (the left side in FIG. 1), and a suction port 26 is opened in the front area, and an outlet 27 is cut out on the inner edge side. It is not formed.

  Inside the cooler chamber 25, a cooler 29 (evaporator) and an internal fan 30 are provided facing the suction port 26. The cooler 29 is circulated and connected to the above-described refrigeration apparatus 18 through refrigerant piping, and constitutes a well-known refrigeration cycle. When the internal fan 30 is driven while operating the refrigeration apparatus 18 (compressor 19), the indoor air in the storage chamber 12 is sucked into the cooler chamber 25 from the suction port 26 by the internal fan 30, and the air is While flowing through the cooler 29, cold air is generated by heat exchange, the cold air is blown out from the outlet 27 along the inner surface of the storage chamber 12, and the cold air is circulated and supplied into the storage chamber 12 to be cooled. It has become so.

On the other hand, in order to remove the frost adhering to the cooler 29 or the like, a defrosting operation is appropriately performed. Therefore, the cooler 29 is provided with a defrost heater 32, and a drainage channel 33 is formed on the back wall 10 </ b> B of the refrigerator body 10. The drainage channel 33 is provided in a vertical direction at a position closer to one side from the center in the width direction in the back wall 10 </ b> B, and its upper end faces the drainage port 24 </ b> A of the drain pan 24, and its lower end is the refrigerator main body 10. Opened on the bottom.
The defrosting operation is performed by energizing and heating the defrosting heater 32, and after the defrosting water is received by the drain pan 24, it flows down the drainage channel 33 and is installed on the lower surface of the refrigerator main body 10 as described later. It can be received by the evaporating dish unit 40.
Further, at the side of the drainage channel 33 on the back wall 10B, for example, at the center position in the width direction, as shown in FIG. The upper surface opening is an exhaust port 36.

As shown in FIG. 2, the evaporating dish unit 40 has a structure in which an evaporating dish 41 made of a metal plate such as a stainless steel plate is accommodated in a case 42 and a cover plate 43 is covered on the upper surface.
The case 42 is a slightly deeper box shape with the top surface and both front and rear surfaces opened, and has a length that is slightly shorter than the depth of the refrigerator body 10 and a width that is a fraction of the width of the refrigerator body 10. ing.
The evaporating dish 41 has a square dish shape having a length dimension of about 2/3 of the entire length of the case 42 and a width dimension slightly smaller than the width of the case 42, and its bottom surface 45 is also shown in FIG. Thus, the front region 46A of about 1/4 on the front side is an inclined surface inclined downward in two steps of steep and loose toward the rear, and the remaining rear region 46B of about 3/4 is slightly slightly. The trailing edge is the deepest downhill. However, even the deepest part is about 2/3 of the depth of the case 42.

On the back surface (outer surface) of the bottom surface 45 of the evaporating dish 41, an evaporating dish heater 47 made of a cord heater is wired in a zigzag manner over almost the entire surface, and is attached with an aluminum foil (not shown). The lead wire of the evaporating dish heater 47 is connected to a control device provided in an electrical box (not shown) in the machine room 17 through the wall surface of the refrigerator body 10 or the like.
Further, a thermostat temperature sensing cylinder 48 (hereinafter simply referred to as a temperature sensing cylinder 48) is attached to the surface of the bottom surface 45 of the evaporating dish 41, for example, the surface of the gently inclined surface of the front region 46A by being pressed by a mounting bracket 49. Has been. The temperature sensing cylinder 48 functions to output an off signal when it is detected that the temperature at the mounting position has reached the operating temperature (for example, 115 ° C.). A signal line (not shown) of the temperature sensing cylinder 48 is connected to a control device in the electrical box, and when an off signal is received from the temperature sensing cylinder 48, the energization to the evaporating dish heater 47 is cut off. It is like that.
The cover plate 43 is formed in an elongated flat plate shape that covers the upper surface of the case 42, and on the rear side in the length direction, a vapor vent hole 51 that is formed by a rectangular hole that is elongated in the same width direction at the center portion in the width direction. And a drain hole 52 made of a round hole is formed on the side of the vapor vent hole 51.

  Then, the evaporating dish 41 is placed in the case 42 with the rear edges aligned, and the left and right mounting plates 54 of the evaporating dish 41 are placed on the left and right flanges 55 of the case 42, so that the evaporating dish 41 is 1, the back surface of the bottom surface 45 to which the evaporating dish heater 47 is attached is supported in a state where it floats from the bottom surface of the case 42. Subsequently, the cover plate 43 is covered, the left and right flanges 56 are placed on the attachment plate 54 of the evaporating dish 41, and the upper surface opening of the evaporating dish 41 is closed by the cover plate 43. On both the left and right sides, the case 42 and the flanges 55 and 56 of the lid plate 43 are fixed at a plurality of locations with fasteners 57 such as screws, with the mounting plate 54 of the evaporating dish 41 interposed therebetween. Thereby, the evaporating dish unit 40 is assembled.

  A pair of left and right rails 58 facing in the front-rear direction are attached to the bottom surface of the refrigerator body 10, and the evaporating dish unit 40 described above is pushed in from the front while the left and right flanges 55 are placed on the corresponding rails 58. It is fixed when the edge is pushed in until it reaches the rear surface of the refrigerator main body 10. At this time, the evaporating dish unit 40 has a cover plate 43 that is substantially in close contact with the bottom surface of the refrigerator main body 10, and a drain hole 52 and a steam vent hole 51 provided on the rear side of the cover plate 43 include the rear wall 10 </ b> B of the refrigerator main body 10. The drainage passage 33 and the exhaust passage 35 formed on the lower surface of the exhaust passage 35 are aligned with each other without causing leakage.

Now, a vapor diffusion box 60 is detachably attached at a position where the exhaust port 36 is opened on the upper surface 10A of the refrigerator body 10. As shown in FIG. 3, the vapor diffusion box 60 includes a receiving box 61 and a cover 62. The receiving box 61 and the cover 62 are also made of a metal plate such as a stainless steel plate.
The receiving box 61 has an open top surface and is formed in a rectangular box shape that is elongated in the width direction of the refrigerator main body 10. For example, the receiving box 61 has a length that is slightly more than three times the length of the long side of the exhaust port 36, And a depth greater than the side dimension. A through hole 64 made of a square hole that is the same as or slightly larger than the exhaust port 36 is formed at the center in the length direction of the bottom surface 61 </ b> A of the receiving box 61. Insertion holes 66 of screws 65 are opened on both sides in the length direction of the through holes 64, and screw holes 67 are formed on both sides of the exhaust port 36 in the upper surface 10 </ b> A of the refrigerator main body 10. It is cut correspondingly.

  The cover 62 is formed in a rectangular box shape with an open bottom surface that fits almost tightly inside the receiving box 61 described above, but the height thereof is larger than the depth of the receiving box 61 by a predetermined dimension. That is, when the cover 62 is inserted into the receiving box 61, the upper surface 62A side protrudes a predetermined amount from the upper edge of the receiving box 61, and the protruding amount is such that it can be grasped by hand. The cover 62 is detachably attached to the receiving box 61. Therefore, the back surface 61B of the receiving box 61 has an insertion hole 70 for a pair of left and right screws 69, and the back of the cover 62. A screw hole 71 is cut at a position aligned with the insertion hole 70 on the surface 62B.

  In addition, both ends in the length direction of the upper surface 62A of the cover 62, in other words, the discharge ports 73 formed of slits that are elongated in the depth direction in the regions on both sides avoiding the position directly above the through hole 64 of the receiving box 61 described above. Are formed at equal intervals along the length direction of the cover 62. Each discharge port 73 is formed to be thin enough to prevent insects from entering. The number of discharge ports 73 is such that the total opening area of all the discharge ports 73 is larger than the opening area of the through holes 64.

Then, the effect | action of this embodiment is demonstrated.
When attaching the vapor diffusion box 60, as shown in FIG. 3, first, the receiving box 61 is placed on the upper surface 10A of the refrigerator body 10, the position of the through hole 64 is aligned with the exhaust port 36, and the bottom surface 61A of the receiving box 61 is inserted. The screw 65 passed through the hole 66 is fixed by screwing into the screw hole 67 of the upper surface 10A of the refrigerator main body 10 and tightening. Next, when the cover 62 is inserted into the receiving box 61 from the upper surface opening and pushed into the bottom surface 61A, the insertion hole 70 of the receiving box 61 and the screw hole 71 of the cover 62 are aligned with each other. 69 is fixed by screwing into the screw hole 71 and tightening. Thereby, as shown in FIG.4 and FIG.5, attachment of the vapor | steam diffusion box 60 is completed. At this time, the upper surface 62A side of the cover 62 protrudes by a predetermined amount. The refrigerator R to which the vapor diffusion box 60 is attached as described above is installed in a state where the back surface thereof is close to the wall surface W of the room, as shown in FIG.

When the defrosting operation is performed during operation of the refrigerator R, the defrost water (drainage) from the cooler 29 and the like passes through the drainage passage 33 of the back wall 10B of the refrigerator body 10 and evaporates from the drainage hole 52 of the lid plate 43. It flows into the dish 41 and is stored. At the same time, the evaporating dish heater 47 is turned on, and the wastewater stored in the evaporating dish 41 is heated and forcibly evaporated, and the generated steam passes through the steam vent hole 51 of the cover plate 43 and the exhaust passage of the back wall 10B. 35 is discharged and discharged from the exhaust port 36 at the upper end. The steam discharged from the exhaust port 36, that is, the through hole 64 into the steam diffusion box 60 hits the central portion of the upper surface 62A of the cover 62 and then splits into the left and right sides, as shown in FIG. Are dispersed and discharged. In addition, since the total opening area of all the discharge ports 73 is set larger than the opening area of the through holes 64, the steam is discharged smoothly without stagnation.
The vapor discharged here may touch the wall surface W in the close position or the panel 17A constituting the machine room 17, but the vapor is discharged in a low concentration state, in other words, a large amount of vapor. Is prevented from concentrating and touching, thereby preventing condensation on the wall surface W or the panel 17A.

  When cleaning the inside of the vapor diffusion box 60, if the two screws 69 on the back surface side are loosened and removed, the cover 62 is detached from the receiving box 61, so that the protruding portion on the upper surface 62A side is grasped by hand. Then, the cover 62 is pulled out from the receiving box 61. If it does so, since the inside of the cover 62 and the receiving box 61 can be made into the open state, the inside can be wiped and cleaned to every corner using a dust cloth. The cover 62 can be washed in a water place or the like. Further, in order to wash the receiving box 61 with water, the receiving box 61 can be removed from the upper surface 10 </ b> A of the refrigerator main body 10 by removing the screw 65 that holds the bottom surface 61 </ b> A.

  As described above, according to the present embodiment, since the vapor diffusion box 60 formed by dispersing a large number of discharge ports 73 is mounted so as to cover the exhaust ports 36 on the upper surface 10A of the refrigerator body 10, the exhaust ports Even if a large amount of steam is discharged from 36, it is once received in the steam diffusion box 60 and then distributed and discharged from each discharge port 73. That is, since the vapor is discharged in a state of being diffused at a low concentration, even if there is a panel 17A constituting the wall surface W or the machine room 17 in the vicinity, a large amount of vapor can be prevented from concentrating and touching them, Condensation is thus suppressed.

Since the vapor diffusion box 60 has a structure in which a cover 62 is fitted in a receiving box 61 and is fixed with a screw 69, it can be divided into two by loosening and removing the screw 69, and both the receiving box 61 and the cover 62 can be opened inside. You can clean every corner.
In addition, although the discharge port 73 is formed on the upper surface 62A of the cover 62, it is formed avoiding the position directly above the through hole 64 of the receiving box 61 and the exhaust port 36. It is avoided as much as possible that it falls into the exhaust passage 35 and enters.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In the above embodiment, the upper surface side protrudes when fitted in the receiving box so that the cover can be easily removed, but a handle may be provided on the upper surface of the cover instead.
(2) The shape of the discharge port that opens on the upper surface of the cover may be other shapes such as a round hole. In this case, each discharge port has a size that does not allow insects to enter, It is desirable to satisfy the condition that the total opening area is larger than the opening area of the through holes.

(3) The two-divided form of the vapor diffusion box is not limited to the one illustrated in the above embodiment. For example, the open surface is closed with a flat cover with respect to the open top receiving box, or the receiving box is It is good also as a shape which opened the other surface besides the upper surface, and covered the open surface with the cover.
(4) Further, in the above embodiment, the vapor diffusion box is illustrated as being capable of being divided into two, but may be an integral box that cannot be divided.
(5) As a heating means of the evaporating dish, for example, when the refrigeration apparatus is provided on the bottom side of the refrigerator main body, the hot gas of the refrigeration apparatus may be used instead of the heater.
(6) The present invention can be widely applied to all cooling storages having a forced evaporation function of drainage such as freezers and refrigerators.

The longitudinal cross-sectional view of the refrigerator which concerns on one Embodiment of this invention Disassembled perspective view of evaporating dish unit Exploded perspective view showing the mounting structure of the vapor diffusion box A perspective view of a state in which a vapor diffusion box is attached The plan view The perspective view which shows the discharge state of steam

Explanation of symbols

  R ... Refrigerator (cooling storage) 10 ... Refrigerator main body (storage main body) 10A ... Top surface of refrigerator main body 10B ... Back wall (peripheral wall) of (refrigeration main body 10) 35 ... Exhaust passage 36 ... Exhaust port 40 ... Evaporation dish unit DESCRIPTION OF SYMBOLS 41 ... Evaporating dish 47 ... Evaporating dish heater (heating means) 60 ... Vapor diffusion box 61 ... Receiving box 61A ... Bottom surface of (receiving box 61) 62 ... Cover 62A ... Upper surface of (cover 62) 64 ... Through-hole 65, 69 ... Screw 73 ... Discharge port

Claims (4)

An evaporating dish is provided on the bottom surface of the storage body to collect drainage and evaporate by a heating means, and an exhaust passage through which steam circulates opens in the lower surface of the storage body inside the peripheral wall of the storage body. An exhaust port that is an outlet of the exhaust passage is provided on the upper surface of the storage body,
The evaporating dish is covered with a lid plate having a vapor vent hole, and the vapor vent hole of the lid plate is aligned with the lower surface opening of the exhaust passage without causing leakage,
And, on the upper surface of the exhaust port is provided vapor diffusion box, together with the part region of the bottom surface of the vapor diffusion box, through hole communicating with the exhaust port to introduce the steam is formed, the the upper surface of the vapor diffusion box, cooling storage plurality of discharge ports at a position deviated from the position immediately above the through hole is characterized in that it is formed by dispersed. The cooling storage according to claim 1 , wherein a total opening area of each of the discharge ports is set to be larger than an opening area of the through hole . The vapor diffusion box includes a receiving box for the through hole is formed and at least the upper surface is opened, and a cover covering the open surface of the receiving box and the discharge port is formed is assembled divisible The cooling storage according to claim 1 or 2, wherein the cooling storage is formed. The lid plate placed on the evaporating dish is provided with a drainage hole that is aligned with the lower surface opening of the drainage channel formed inside the peripheral wall of the storage body together with the vapor vent hole. The cooling storage according to any one of claims 1 to 3 .

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