JPH0581821B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] Industrial Field of Application The present invention relates to a drainage device for defrosting water in a cooling box body, and the drainage device and other devices are arranged in close contact with each other to make the overall structure thin. Concerning mechanical units that change.

Prior Art In a cooling box body of a refrigerator, etc., a drain pipe is led out from a drain port and an opening at the tip of the drain pipe is used to guide the defrosting water dripped by ice melting during defrosting operation to the evaporating dish. An example of this is disclosed in Japanese Patent Application Laid-Open No. 108981/1983. In this publication, the drain pipe is composed of three members: first and second drain pipes and a water conduit pipe, and the water conduit pipe is provided with a trap with a folded part in the middle, and the entrance and exit are set eccentrically on the inlet side of this trap. An expanded tube portion having a capacity larger than half the capacity of the trap is formed.

Problems to be Solved by the Invention According to the above-mentioned publication, since the drain pipe consisting of three members is installed using the back wall of the refrigerator, there are not many restrictions on its length in the height direction. Therefore, little consideration has been given to reducing the length in the height direction. For this reason, this drain pipe cannot be used in applications that require a drainage device with a height restriction. In addition, if the diameter of the inlet of the drainage device, that is, the drainage port, is large, the drainage port will be less likely to be blocked by dust, dirt, etc., so it is desirable to have a larger diameter. The outside air flowing in from the side is easily guided to the drain, increasing the amount of heat entering the cooling room and wastefully releasing it outside, leading to a decrease in cooling capacity. It is desirable to quickly seal the water with water.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a mechanical unit having a drain pipe portion which is formed to suppress the height of the unit itself and has a water-sealing effect on the drain port while keeping the height of the unit within a predetermined height. shall be.

[Structure of the invention]

Means for Solving the Problems The mechanical unit of the present invention includes a first machine room that houses a compressor, a condenser, a blower for the condenser, and a drain tray, and a first machine room that is formed independently of the first machine room by a heat insulating material. and a second machine room that is located side by side and houses the evaporator and the evaporator blower, and a flat drainage tank that is located below the second machine room and guides waste water from the second machine room to the drain tray. It has been established that

In addition, there is a first machine room in which an air intake port is formed on the top surface and an exhaust port is formed on the side surface, and a condenser, a blower device for the condenser, and a drain tray are arranged horizontally below the intake port, and an evaporator and a drain tray for the evaporator. A second machine room that houses the blower insulated and is installed in parallel with the first machine room and has a drain port formed on the bottom, and an inlet opening corresponding to the drain port.
The first machine is provided with an outlet opening located above the drain pan and a drain tank located below the second machine room, which has a trap section for storing waste water and blocking the inlet opening with the stored water. The waste water from the second machine room may be guided to the drain tray while preventing warm air from entering the second machine room.

Effect By arranging the first machine room and the second machine room side by side,
The height-restricting factors in the mechanical unit are reduced, and by using a flat-shaped drainage tank, the height of the lower part of the second machine room is kept low, and the height of the unit as a whole is suppressed. ing.

In addition, by blocking the inlet opening with water stored in the trap section of the drainage tank,
The inlet opening is water-sealed before the drain water flows into the drain tray, that is, before the drain tank overflows, to prevent warm air entering from the outlet opening from flowing into the second machine room through the drain hole.

Embodiments Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 to 11.

Reference numeral 1 denotes a sealed display box 2 that is placed on a display stand such as a glass case, and a closed display box 2 that is formed separately from the display box and that stores mechanical parts and draws out cooling air, that is, cold air, and that is used to store the display stand. The display box 2, which is an unused space formed at the bottom, and the machine box 3, which is a mechanical unit, is arranged at a remote location, and both boxes 2 and 3 are connected to each other so that air can circulate, and the temperature rise of cold air is suppressed. This is a separate type case that is constructed of a blower pipe 4 and a blower pipe 4 that is preferably covered with a heat insulating material.

The display box 2 includes a base 11 having on its upper surface a turntable 14 on which products for sale are placed and is rotatably and removably held, and a base that surrounds the products placed on the turntable 14. It consists of a transparent member (hereinafter referred to as a hood) 13 that defines a product storage chamber 12 above a stand 11, and is placed on a stand such as a display stand.

The base 11 has a substantially circular shape in plan view, and serves as the bottom wall of the product storage chamber 12. The base 11 has a ventilation chamber 15 at the upper level below the turntable 14 and a lighting chamber 16 at the lower level, respectively. has formed,
Both chambers 15 and 16 are provided with a partition plate, a heat insulating material 17, and a light-transmitting member having heat insulating properties, such as three-layer transparent glass 1.
It is divided into 8 sections.

Further, in the illumination room 16, an illumination lamp, for example, an annular fluorescent lamp 21, which is a part of the illumination device, is disposed below the three-layer transparent glass 18. Note that the central space of the fluorescent lamp 21 is used to arrange an electrical component, such as a glow lamp. A power switch (not shown) for the fluorescent lamp 21 is placed on the base, for example, on the side of the cover of the hinge device (not shown), and a heater for preventing condensation is installed at the bottom of the base and around the transparent glass 18. 23
It is preferable that the lamp is energized when the fluorescent lamp is turned off.

On the other hand, a hood 13 surrounding the product storage chamber 12
For example, a plurality of transparent bodies made of transparent resin such as acrylic acid resin and each having a three-dimensional opening on the bottom surface, for example, a hemispherical shape, are arranged in multiple layers (in this example, three layers) with an interval between them. A fixing piece, which is formed as a main body and protrudes outward from the lower part of the transparent body located at the outermost layer, is fixed to the hinge device. The interval between each transparent body is selected within a range where convection is difficult to occur in the air layer in the interval, and in this example, the interval is 5.
mm, so that the air layer itself acts as a kind of heat insulating layer.

The blast pipe 4 includes an outgoing pipe 24 that serves as a conveyance path for air cooled in the machine box 3 (this is referred to as cold air);
A return cylinder 25 serves as a transport path for the air that has cooled the exhibition box 2 (this is called return cold air), and both cylinders 24 and 25
A heat insulating material 26 such as a foamed heat insulating material that thermally covers the
and a blower cover 27 that covers the heat insulating material 26, and is formed so that one end can be attached to and detached from the machine box 3 and the other end can be attached to and detached from the display box 2.

The machine box 3 is configured in a box shape with an upper cover 30, a side cover 31, and a base 32, and a plate fin type is installed horizontally below an air intake port 33 formed on the upper surface of the upper cover 30 so that the fins are oriented vertically. A condenser 34, a blower device 35 for the condenser that sucks air from above and discharges it downward, and a drain tray 36 are arranged below in sequence, and a first machine room 10 in which a compressor 38 etc. is located, and a space made of polystyrene foam etc. A second machine room 7 is separated from the first machine room 10 by a heat insulating material and is equipped with a plate-fin type evaporator (=cooler) 39 and an evaporator blower 40 to send out cooling air (i.e. cold air). and is formed. In order to facilitate the evaporation of the water accumulated in the drain tray 36, an evaporation promoting member 37 is provided on the drain tray 36, which sucks up the water and increases the area of contact with the air. As the evaporation accelerating member 37, a plate made of a hydrophilic material (for example, a porous resin material) is used, and the plates are orthogonal to each other in the horizontal direction to form a lattice shape in plan view [referred to as a lattice member]. ] (not shown), or one in which one plate surface is inclined upward and the other plate surface is oriented horizontally and intersects [this is called an inclined body and is shown in Figure 3]
All you have to do is form. When we experimented with the two above-mentioned side by side, we found that the sloped body evaporates about 20% more than the grid-shaped body, and the wind from the blower 35 can no longer be blown directly onto the water surface, causing the water surface to rise. There is an advantage that overflowing from the drain tray 36 can be prevented without causing any ripples. Further, the drain tray 36 has a drain receiving portion 36B formed in a portion that is not likely to receive the wind from the blower 35.

In addition, the height of the unused space at the bottom of the display stand is 230 mm.
Since there are many products around mm, the height of the machine box 3 has to be adjusted.
It is necessary to keep it within 230mm, and the upper cover 3
The air intake port 33 is provided on the top surface of the machine box 3, and the exhaust ports 30B and 31B are provided on the side surface of the top cover 30 and the horizontal cover 31, respectively. The height is 200mm.

The second machine room 7 has a box-like structure including a main body 7B and a lid 7A, and an evaporator 39 is installed in the second machine room 7.
a casing section 42 communicating with the heat exchange section 41 and accommodating the blower 40;
, the air inlet of the heat exchange section 41 and the return cold air inlet 43
The compressor 38
Temperature control means 44 is installed at a suitable location to stop operation of the compressor 38 and restart operation of the compressor 38 when the temperature reaches a certain temperature (for example, 9° C.). Suction part 45 that allows circulation and casing part 42
A delivery section 47, which is formed between the air outlet and the cold air delivery port 46 and serves as a conduit through which air can flow, is each integrally constructed of styrofoam. still,
The bottom surface 41B of the heat exchange section has a rectangular shape in plan view, and is sloped so that it becomes higher from one side where the air inlet is located to the opposite side. A drain hole 48 serving as a drainage port for discharging defrosting water is provided in the portion where 45 and 45 overlap. In addition, in order to prevent cold air from directly flowing into the casing part 42 from the suction part 45, the inlet opening 42B between the suction part 45 and the casing part
A partition plate 49 is provided to separate the two. Therefore, the return cold air guided to the heat exchange section 41 via the suction section 45 is guided below the evaporator 39 and sent to the blower device 4.
The evaporator 3 is in contact with the evaporator 39 due to the suction of
Pass through 9 fins and move from below to above. At this time, since the bottom surface 41B of the heat exchange section is sloped so that it becomes higher sequentially from the inlet side to the opposite side, it is almost uniform over the entire lower surface of the evaporator (the inlet side has a large volume and low speed, and the opposite side has a high volume). It moves at a high speed with a small amount of heat, and flows almost uniformly throughout), allowing efficient heat exchange. still,
Like the lower surface, the upper surface 41A of the heat exchange section is sloped so that the outlet side is higher and the opposite side is lower. On the other hand, by configuring each part such as the heat exchange part 41 and the casing 42 as one unit, the casing and pipe body of the blower can be omitted, and there is no need to connect each part, and the insulation efficiency can be improved. . Further, it is also possible to easily integrally form an elbow portion, which serves as a directing portion for directing horizontally conveyed air upward, and projects laterally.

On the other hand, a drain tank 50 is provided below the drain hole 48 as a drain pipe for conveying defrosting water from the drain hole 48 to the drain tray 36. This drainage tank 5
0 is an inlet opening 51 corresponding to the position immediately below the drain hole 48
An inlet portion 52 having a drain tray and a drain receiving portion 36B of a drain tray.
an outlet section 54 that extends to the upper surface and has an outlet opening 53 facing downward; and a first machine that is located between both sections 52 and 54 and stores water, which blocks the inlet opening with the stored water and allows the water to flow through the outlet opening 53. The trap part 55 prevents the air from entering the heat exchange part 41, and the trap part 55 has a flat shape and a low height as shown in the plane and cross section of FIGS. 10 and 1. It is said that Here, the outlet part 54 is formed to have an overflow function to drain water to the drain tray 36 when the water stored in the trap part 55 exceeds a certain water level (the surface that defines this is referred to as an overflow surface 56). The part 52 is the trap part 5
In order to allow the inlet opening 51 to be blocked by the stored water before the water stored in the recess 5 overflows and flows out, a recess 57 is formed with the opening surface at a lower position than the overflow surface 56. Further, the trap portion 55 has a raised bottom recess 58 in order to reduce the minimum amount of water when the inlet opening 51 is closed. Furthermore, 59 is an attachment piece for attaching to the flange 60B of the fixing member 60 that fixes the drain tank 50 to the base 32, and 61 is an attachment hole formed in the base 32 for attaching and detaching the drain tank 50 from the bottom surface. The area around the drain hole 48 of the main body 7A constituting the second machine room 7 is the drainage tank 5.
A recess 62 corresponding to the inlet 52 of 0 is formed,
The inlet portion 52 and the recess 62 are used to position the drain tank 50 and the main body 7A. An annular packing 63 is provided on the upper surface of the inlet portion 52 to seal between the lower surface of the main body 7A and the upper surface of the inlet portion 52.

〔Effect of the invention〕

Since the present invention is configured as described above, it has the following effects.

A second section that houses the evaporator and the evaporator blower
By forming the machine room with a heat insulating material and placing it in parallel with the first machine room that houses other machine parts, it is possible to reduce the height-restricting factors as a machine unit. By arranging it below the machine room, the height of the machine unit can be reduced.

On the other hand, by installing the condenser, the condenser blower, and the drain pan horizontally in a vertical relationship below the air intake hole formed on the top surface, almost all of the air heated by passing through the condenser evaporates. Since it is applied perpendicularly to the top surface of the dish, the amount of warm air that comes into contact with the water surface can be increased, and the evaporation of water accumulated in the drain dish can be promoted. In addition, the drainage tank has an inlet opening corresponding to the drain port of the second machine room and a trap section for storing drainage water, and by blocking the inlet opening with the water stored in this trap section, the U-bend Even without forming a section, the water sealing function of the inlet opening can be maintained in the drain tank, the tank can be easily flattened, and the outlet opening can be set at any position relative to the inlet opening.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention, and FIG. 1 is a vertical sectional view of a drainage tank, FIG. Plan views of the box that constitutes the machine room, Figures 5 to 8 are A-A, B-B, CC, and D in Figure 4, respectively.
-D each cross-sectional view, Figure 9 is a cross-sectional view in a water-sealed state showing the arrangement relationship of the drain outlet, drain tank, and drain tray, Figure 10
The figure is a plan view of the drain tank, and FIG. 11 is an exploded perspective view of the base, fixing member, and drain tank. 1... Showcase, 3... Machine box, 7... Second machine room, 10... First machine room, 30B, 31B... Exhaust port, 32... Base, 33... Air intake port, 34... Condenser, 35... Condenser air blower Device, 36...Drainage pan, 36B...Drainage receiving part, 39...Evaporator, 40...Evaporator blower, 50...Drainage tank, 51...Inlet opening, 53...Outlet opening, 55...Trap part, 56
...overflow surface.

Claims (1)

[Scope of Claims] 1. A first machine room housing a compressor, a condenser, a blower device for the condenser, and a drain tray;
A second machine room is formed independently of the machine room and is arranged in parallel with the machine room, and houses an evaporator and a blower for the evaporator. A mechanical unit characterized by being equipped with a flat drainage tank leading to a drainage pan. 2. A first machine room in which an air intake port is formed on the top surface and an exhaust port is formed on the side surface, and a condenser, a condenser blower device, and a drain tray are arranged horizontally below the intake port, and an evaporator and a blower for the evaporator. a second machine room that houses the device in adiabatic manner and is arranged in parallel with the first machine room and has a drain port formed on the bottom; an inlet opening corresponding to the drain port; an outlet opening located above the drain pan; and a drain. and a drainage tank located below the second machine room and having a trap section configured to store water and close the inlet opening with the stored water.