JPH0213777A - Machine unit - Google Patents

Abstract

PURPOSE:To restrain the height of an unit within a predetermined height while obtain the water packing effect of a drain port by a method wherein a first machine chamber and a second machine chamber are provided in parallel and the opening of an inlet port is blocked by water reserved in the trap unit of a drain tank formed so as to have a flat shape. CONSTITUTION:A first machine chamber 10, in which a compressor 38 and the like are positioned, and a second machine chamber 7, defined and formed separately from the first machine chamber 10 by heat insulating member and arranged with a plate fin type evaporator 39 and a ventilating device for the evaporator to send out cooling air, are formed in a machine box 3. A drain tank 50 is constituted of an inlet port unit 52 having an inlet opening 51 opposed to a drain hole 48 immediately above it, an outlet port unit 54 extended to the upper surface of the drain receiving unit 36B of a discharging water pan and provided with an outlet opening 53 extended downwardly and a trap unit 55 positioned between both units 52, 54 and blockading the inlet opening by water reserved therein to preclude the invasion of air in the first machine chamber, flowing from the outlet opening 53 into a heat exchanger 41. The drain tank is formed so as to have a flat shape, whereby the height thereof may be restrained so as to be low.

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.

Conventional technology In the cooling box body of a refrigerator, etc., in order to guide the defrosting water that drips due to melting of ice and frost during defrosting operation to the evaporating dish, a drain pipe is led out from the drain port and the tip opening of this drain pipe is used for evaporation. It is made to face the plate, and an example of this is JP-A-62
There is a publication No.-108981. 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 having 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 can be installed using the back wall of the refrigerator, there are no restrictions on its height. 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 difficult to close due to dust and dirt, so it is desirable to have a large diameter of the drainage port. Outside air flowing in from the side is easily guided to the drain, increasing the amount of heat that enters the cooling room and the amount of heat that is wasted outside, leading to a decrease in cooling capacity. It is desirable to seal water as quickly as possible.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a mechanical unit having a drain pipe section that 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 can be formed independently of the first machine room using 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 the 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 condenser blower, and a drain tray are arranged horizontally below the intake port, and an evaporator and an evaporator A second machine room that houses the air blower in adiabatic manner and is installed 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 tray, and a storage space for waste water. and a drainage tank located below the second machine room, which has a trap part that closes the inlet opening with stored water, to prevent warm air from entering the second machine room from the first machine room. At the same time, the waste water from the second machine room may be guided to the drain tray.

By arranging the first machine room and the second machine room side-by-side, the height restriction factor in the machine unit is reduced, and by using a flat drain tank, the second machine room The height of the lower part of the room is kept low, and the loudness of the unit as a whole is suppressed.

In addition, by closing the inlet opening with water stored in the trap section of the drain tank, the inlet opening is sealed with water and water can enter through the outlet opening before draining the drain into the drain tray, that is, before the drain tank overflows. This prevents warm air from flowing into the second machine room through the drain hole.

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

(1) consists of a closed display box (2) placed on a display stand such as a glass case, which is formed separately from the display box to house mechanical parts and to draw out cooling air, that is, cold air; The display box (2), which is an unused space formed at the bottom of the display stand, and the machine box (3) as a mechanical unit located at a separate location, and both boxes (2) and (3) are connected by air circulation. This is a separate type showcase that is made up of a blower pipe (4) that is completely covered with a heat insulating material to allow for easy communication and to suppress the rise in temperature of cold air.

The display box (2) includes a base (11) having on its upper surface a turntable (14) on which a product for sale is placed and is rotatably and removably held, and a base (11) placed on the turntable (14). A transparent member (hereinafter referred to as a hood) (13) defines a product storage chamber (12) above a base (11) so as to surround the product, and is placed on a display stand or the like. It is something that makes you

The base (11) is approximately circular in plan view and has a product storage chamber (
12) and becomes the bottom wall of the air outlet (19) and suction port (20).
A ventilation chamber (15) is formed at the lower upper level of the turntable (14), and a lighting chamber (16) is formed at the lower level. Also, a light-transmitting member with heat insulating properties, such as three-layer transparent glass (
18).

In addition, the lighting room (16) is equipped with a lighting lamp, such as an annular fluorescent lamp (2
1) is installed. Incidentally, an electric component such as a glow lamp is arranged using the central space of the fluorescent lamp (21).

A power switch (not shown) for the fluorescent lamp (21) was placed on the base, for example, on the side of the cover of the hinge device (not shown), and was placed on the bottom of the base and around the transparent glass (18). It is preferable that the dew condensation prevention heater (23) is turned off when the fluorescent lamp is turned off.

On the other hand, the hood (13) surrounding the product storage chamber (12) is made of a transparent resin such as acrylic acid resin, and is made of a plurality of transparent bodies whose lower openings have a three-dimensional shape, for example, a hemispherical shape, and are spaced apart from each other. The main body is arranged in multiple layers (in this example, three layers), and a fixing piece protruding outward from the lower part of the transparent body located in the outermost layer is fixed to the hinge device. The distance between each transparent body can be selected within a range where convection is difficult to occur in the air layer in the space, and in this example, it is 5 m.
The air layer itself acts as a kind of heat insulating layer.

The blower pipe (4) carries the cooled air (
an outgoing pipe (24) that serves as a transport route for the air that has cooled the display box (2) (this is called cold air), a return pipe (25) that serves as a transport route for the air that has cooled the display box (2) (this is called return cold air), and a double pipe (24). It consists of a heat insulating material (26) such as a foam heat insulating material that insulates the heat insulating material (25), and a ventilation cover (27) that covers this heat insulating material (26), with one end facing the machine box (3). , and the other end is formed so that it can be attached to and detached from the display box (2).

The machine box (3) has a box-like structure including an upper cover (30), a side cover (31), and a base (32).
Below the air intake port (33) formed on the top surface, there is a plate-fin type condenser (34) installed horizontally so that the fins are vertical, and a condenser blower device (35) that sucks air from above and discharges it downward. In addition, a drain tray (36) is sequentially arranged below, and a first machine room (10) in which a compressor (38) etc. are located is separated from the first machine room (10) by a heat insulating material such as styrofoam. Compartmented plate-fin type evaporator (-cooler) (39) and evaporator blower (
40) to form a second machine room (7) from which cooling air (that is, cold air) is sent. In addition, in order to facilitate the evaporation of the water accumulated in the drain tray (36), an evaporation promoting member (37) that sucks up water and increases the contact area with the air is attached to the drain tray (36).
36). As this 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. (not shown), or one in which one plate surface is tilted upward and the other plate surface is oriented horizontally so that they can intersect [this is called a tilted body and is shown in Figure 3].
All you have to do is form. When we experimented with the two mentioned above side by side, we found that the evaporation amount of the sloped body was about 20% higher than that of the grid-shaped body, and the wind from the blower (35) could no longer be blown directly onto the water surface. This has the advantage that it does not cause any ripples and can prevent the drain tray (36) from spilling over. In addition, the drain tray (3
In 6), a drainage receiving portion (36B) is formed in a portion that is not likely to receive the wind from the blower device (35).

In addition, the height of the unused space at the bottom of the display stand is 233m1l.
Since there are many cases around 1, the height of the machine box (3) is set at 2.
It is necessary to keep the distance within 30m, and the upper cover (30)
At least 301111 air intake ports (33) are provided on the upper surface of the upper box, and exhaust ports (30B) (31B) are provided on the side and side covers (31) of the upper cover (30), respectively.
It is preferable to provide some margin, so the machine box (3)
The height of is set to 20011111.

The second machine room (7) has a main body (7B) and a lid (7A) in the shape of a single box, and there is an evaporator (39
), and a heat exchange section (41) in which the heat exchange section (41) is provided.
) communicates with the casing part (
42), is formed between the air inlet of the heat exchange part (41) and the return cold air intake port (43), and detects the temperature of the return air and starts compressing when the temperature falls below a predetermined temperature (for example, 6°C). Machine (
Temperature control means (44) that stops operation of the compressor (38) and restarts operation of the compressor (38) when the temperature reaches a certain temperature (for example, 9°C) is disposed at an appropriate location, and a cold air intake port (
A suction part (45>) is sloped lower in order from 43) to the air inlet to allow air to flow, and a conduit is formed between the air outlet of the casing part (42) and the cold air outlet (46) to allow air to flow. The delivery portion (47>) is each integrally constructed of styrofoam.

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) as a drain port for discharging defrosting water is provided in the portion where the suction portion (41) and the suction portion (45) overlap. In addition, the casing part (4) is directly connected to the suction part (45).
In order to prevent cold air from flowing into the suction part (45)
) and the inlet opening (42B) of the casing part. Therefore, the return cold air led to the heat exchange part (41) via the suction part (45) is guided below the evaporator (39) and is brought into contact with the evaporator (39) by the suction of the blower (40). The flow passes between the fins of the evaporator (39) and moves from the bottom to the top. At this time, since the bottom surface (41B) of the heat exchange section was sloped so that it became higher sequentially from the inlet side to the opposite side, the lower surface of the evaporator was approximately evenly distributed. On the other hand, the amount of heat is small and moves at high speed, resulting in an approximately uniform flow as a whole, allowing for efficient heat exchange. still,
Like the lower surface, the upper surface (4LA) of the heat exchanger is also sloped so that the outlet side is higher and the opposite side is lower. - On the other hand, by integrally constructing each part such as the heat exchange part (41) and the casing part (42), the casing and pipe body of the blower can be omitted, there is no need to connect each part, and the insulation efficiency is improved. You can improve your performance. Further, it is also possible to easily integrally form a portion of the elbow, which serves as a directing portion for directing horizontally conveyed air upward, to protrude to the side.

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 (50
) is the inlet part ITI (
an inlet portion (52) having a drain portion (51) and a drain receiving portion (
Exit opening (53) extending to the upper surface of 36B> and facing downward.
The outlet section (54) having a A trap part (55) that prevents entry into the exchange part (41).
), and has a flat shape with a low height, as shown in its plane and cross section in FIGS. 10 and 1. Here, the outlet section (54) is the trap section (54).
When the water stored in the drain tray (5) exceeds a certain water level (the surface that defines this is called the overflow surface (56)), the drain tray (
The inlet part (52) has an overflow function for draining water to the trap part (55), and the inlet opening (51) is formed before the water stored in the trap part (55) overflows and flows out.
) is closed by the stored water, the opening surface is lower than the overflow surface (56).
57). Moreover, the trap part (55) forms a raised bottom recess (58) in order to reduce the minimum amount of water when closing the inlet opening (51). Furthermore, (59) is a mounting 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 a mounting piece for attaching and detaching the drain tank (50) from the bottom surface. This is a mounting hole formed in the base plate 32) for the purpose of attaching the base plate. In addition, the area around the drain hole (48) of the main body (7A) constituting the second machine room (7) is the inlet part (50) of the drainage tank (50).
A recessed portion (62) corresponding to the inlet portion (52) is formed.
2) and the recess (62) to connect the drainage tank (50) and the main body (7).
A) is used for positioning. In addition, the entrance part (
An annular backing (63) is disposed on the upper surface of the main body (7A) and seals between the lower surface of the main body (7A) and the upper surface of the inlet (52).

〔Effect of the invention〕

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

The second machine room, which houses the evaporator and the evaporator blower, is made of a heat insulating material and is placed in parallel with the first machine room, which houses other machine parts, thereby eliminating the height-limiting factors for the machine unit. Furthermore, by making the drainage tank flat and arranging it below the second machine room, the height of the machine unit can be reduced.

On the other hand, by installing the condenser, condenser blower, and drainage pan horizontally in a vertical relationship below the air intake hole formed on the top surface, almost all of the air that has passed through the condenser is heated. Since it is applied perpendicularly to the top surface of the evaporating 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 draining 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 wastewater. By closing the inlet opening with the water stored in this trap section, the U vent The water sealing function of the inlet opening can be maintained in the drain tank even without forming a part of the inlet opening, the drain 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. Figure 1 is a vertical sectional view of a drainage tank, Figure 2 is an external perspective view of a showcase, Figure 3 is an exploded perspective view of a machine box, and Figure 4 is an exploded perspective view of a machine box. 2 Plan views of the box constituting the machine room, Figures 5 to 8 are A-A in Figure 4, respectively.
, B-B, C-C. D-D plan view, Figure 9 is a sectional view of the water-sealed state showing the arrangement of the drain outlet, drain tank, and drain tray, Figure 10 is a plan view of the drain tank, and Figure 11 is the base, fixing member, It is an exploded perspective view of a drainage tank. (1)...Showcase, (3>...Machine box, (
7)...Second machine room, (10)...First machine room,
(30B) (31B)...Exhaust port, (32)...
・Base, (33>...Air intake, (34)・
... Condenser, (35) ... Air blower for condenser, (
36)...Drainage pan, (36B>...Drainage receiving part,
(39)... Evaporator, (40)... Evaporator blower, (50)... Drainage tank, (51)...
Inlet opening, (53)...Exit opening, (55)...
- Trap part, (56)...overflow surface.

Claims (1)

[Scope of Claims] 1. A first machine room that houses a compressor, a condenser, a blower for the condenser, and a drain tray, and is formed independently of the first machine room using a heat insulating material and is installed in parallel with the first machine room. Also provided is a second machine room that houses an evaporator and an 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 pan. A mechanical unit characterized by: 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, an air blower 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 a blower 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 tray; A mechanical unit comprising: a drainage tank located below the second machine room and having a trap section configured to store drainage water and close the inlet opening with the stored water.