JPH01260278A - Machine case for cooling and separate type cooling showcase equipped with said machine case - Google Patents

Abstract

PURPOSE:To permit the provision of machine cases in a space below a showcase, which is not used yet, by a method wherein a first machine chamber, receiving a compressor, a condenser and the like, and a second machine chamber, constituted independently from the first machine chamber by an insulating material and receiving an evaporator and the like, are provided in parallel. CONSTITUTION:A machine case 2 for circulating and supplying cold air to a showcase is provided in a space below the show case, which is not used yet. The machine case 2 is formed of a first machine chamber P receiving a compressor 31, a condenser 32, a ventilating device 33 for the condenser and the like and a second machine chamber Q, receiving an evaporator and a ventilating device for the evaporator, provided with a cold air sending port 38 as well as a return cold air inlet port 39, which project from the side of the case, a drain tank 40 as well as a drain pan 34, which are arranged at the lower part thereof, and defined from the first machine chamber P by an insulating material to insulate from heat. According to this method, the height of the machine case may be restrained by providing two machine chambers in parallel to arrange them in a space below the showcase, which is not used yet, whereby the effective utilization of the space may be contrived.

Description

[Detailed Description of the Invention] [Object of the Invention] Industrial Application Field The present invention provides a separate cooling showcase in which a display box for cooling and storing products and a machine box for storing mechanical parts are separately formed. Specifically, the present invention relates to an improved mechanical box that obtains cooling air through heat exchange.

Conventional cooling showcases generally have an upper storage chamber and a lower mechanical chamber that are integrally formed. The cooler can be easily attached to the top of the storage room.

On the other hand, a showcase in which a storage room and a machine room are separated and formed separately has also been proposed, and Japanese Utility Model Publication No. 13746/1974 proposes a cooling room equipped with an evaporator and a machine room equipped with mechanical parts. A showcase is disclosed that includes a cooling source device having a cooling source device and a showcase body formed separately from the cooling source device and communicating with a cooling chamber.

Problems to be Solved by the Invention In the above-mentioned publication, the cooling source device and the showcase body are constructed separately, and the two are communicated through an air circulation path so that cool air can be forcedly circulated through the showcase body. I have to.

However, although the cooling source device communicates with the main body of the showcase, no consideration has been given to reducing the arrangement and configuration of the equipment relative to its size (especially height).
This cooling source device could not be installed in the unused space formed below the display case main body because the legs and risers could not be arranged.

Usually, the height of the unused space below the display case body is about 230 mm or more, and an object of the present invention is to provide a machine box that can be installed in this unused space.

[Structure of the invention]

Means for Solving the Problems The cooling machine box of the present invention includes a first machine room having an air intake port on the top surface and an exhaust port on the side surface and housing a compressor/condenser and a blower device for the condenser; The second machine room is configured independently of the first machine room using heat insulating material, and is provided in parallel with the first machine room and accommodates the evaporator and the air blower for the evaporator, and the second machine room projects outward. At the same time, a cold air outlet and a return cold air intake opening that open upward are arranged side by side. Further, as the first machine room, a condenser is arranged horizontally below in correspondence with the air intake hole formed on the upper surface,
Below the condenser, a blower device and a drain tray are arranged vertically in order, and an evaporation promoting member is installed between the drain tray and the blower device, which sucks up the defrosting water stored in the drain tray and increases the area where the defrosting water comes into contact with the air. By arranging the partitions, it is effective in suppressing the height of the machine box within the height limit and increasing the amount of evaporation of the defrosting water. Furthermore, the second machine room includes a heat exchange section in which an evaporator is disposed and a bottom surface inclined, a suction section that guides the return cold air from the return cold air inlet to the lower lower side of the heat exchanger, and a heat exchange section with an inclined bottom surface. It is advantageous in terms of making the machine box thinner and more compact if the casing part that communicates with the exchange part and houses the blower and the outlet that guides the cold air that has passed through the casing part to the cold air outlet are integrally formed using a heat insulating material. , and has excellent heat insulation properties.

On the other hand, the separate showcase of the present invention includes the above-mentioned machine box arranged in the unused space formed by the leg material at the bottom of the display stand, and the machine box, which is separate from the machine box and has a transparent member. A display box in which sales products are displayed and stored in an enclosed product storage area and placed on a display stand, and a blower pipe arranged along the back of the display stand to connect both boxes so that air can circulate are provided. There is a master of things.

By arranging the first working machine room and the second machine room side by side, we can reduce the number of limiting factors in the height direction, and also take into consideration the arrangement of mechanical parts in each machine room to achieve a thinner and more compact structure.

Furthermore, the outer wall of the second machine room and the partition walls of each part are integrally molded with a heat insulating material to improve the heat insulation of each part and to reduce the number of assembly elements. The air that has undergone heat exchange through the condenser is likely to come into contact with the water stored in the drain tray due to its vertical position, promoting its evaporation. Further, the air that has been cooled in the heat exchange section is directed upward from the cold air outlet through the casing section and the delivery section, and is adiabatically conveyed to the display box by the air pipe.

EXAMPLES Examples of the present invention will be described below with reference to FIGS. 1 to 8.

(G) is a display stand, which is provided with leg members (T) that form an unused space (S) below the room where products are displayed.

(1) is a sealed exhibition box (10), which is formed separately from this exhibition box, stores mechanical parts, and draws out cooling air, that is, cold air, for example, to display the unused space (S), etc. A machine box (2) arranged separately from the box (10), and a blower pipe that connects both boxes <10) (2) to allow air circulation and is covered with a heat insulating material to suppress the temperature rise of cold air. (3) It is a separate type showcase consisting of (3) and can be used for freezing, refrigeration, ice heating, and heating by changing the temperature range to be controlled depending on the type of product stored, but this example Let's take a refrigerated showcase as an example.

The exhibition box (10) has a roughly spherical shape, and includes a base (11), which forms the lower half and is generally circular in top view, and a base (11), which forms the upper half and serves as a cooling chamber, as well as a base (11) at the bottom. It consists of a product storage section (12) having a turntable (18) as a display stand for placing products, and in this example, it is placed on the upper part of the display stand (G). The product storage section (12) has a bottom opening in a three-dimensional shape, for example, a cubic curved surface (approximately hemispherical in this example), and a see-through member (hereinafter referred to as a hood) (22) made of a transparent material. A hood (22) and a base (11) are surrounded by a triple-layered structure using transparent resin such as acrylic acid resin as a transparent body, and have an annular frame material (24) arranged around the entire lower end of the hood (22) and a base (11).
(More specifically, the horizontal portion of the partition plate (21)) is provided with a backing (25) on the lower surface of the annular frame member (24). Further, the hood (22) is rotatably fixed to the partition plate (21>) by a hinge portion (23).

The base (11) has a ventilation chamber (13) in the upper layer and a lighting chamber (14) in the lower layer, and the drawing chambers (13) (14).
is partitioned by a partition plate (19), a heat insulating material (15A), and a light-transmitting member having heat insulating properties, such as transparent glass (15B). The ventilation room (13) introduces air (referred to as cold air) that has been cooled in the machine box (2) and transported through the blower pipe (3), and guides this cold air to the product storage section (12). The cold air supply section (16) serves as a high-pressure space, and the product storage section (
12) and a cold air return section (17) as a low-pressure space that collects the air after cooling the air (this is referred to as return cold air) and leads it to the blast pipe (3). .

The air pipe (3) has one end connected to the cold air outlet (2) of the machine box (2).
38), a supply cylinder whose other end is connected to the cold air inlet (not shown) of the cold air supply section (16) and through which cold air flows adiabatically, and whose one end is connected to the return cold air inlet of the machine box (2). (39) and a return cylinder whose other end is connected to the return cold air outlet of the cold air supply section (17) and through which the return cold air flows, and both cylinders are covered with a heat insulating material. Both cylinders may be configured to be bendable and expandable.

The machine box (2) has a box-like structure with a top cover (4), a side cover (5), and a base (6), and the machine box (2) includes:
The first housing accommodates a compressor (31), a condenser (32), a condenser blower (33), etc. that constitute a part of the refrigeration cycle.
The machine room (P) houses the evaporator (-cooler) (36) and the evaporator blower (37), and the air cooled by the evaporator (36) for air circulation to the blower pipe (3). The cold air outlet (38) that sends out the cold air (this is called cold air) and the return cold air inlet (39) that takes in the air that has cooled the product storage section (12) (this is called the return cold air) are on the side. The first machine room (P) is adiabatically separated from the first machine room (P) by a heat insulating material such as styrofoam, which is formed to protrude in the direction, and is arranged side by side with an opening on the top surface, and a drainage tank (40) is disposed below. 2 machine rooms (Q) are formed. The machine box (2) is placed in an unused space (S) formed by the legs (I') in order to make it difficult to see from the outside, especially from the customer display side of the display case (G). It is.

When installing the machine box (2) in an unused space (S), the height of the machine box (2) must be within 230 mm, as the height of most unused spaces (S) is 230 mm or more. It is kept to a minimum. In addition, the first machine room (P) of the machine box (2) on the wood flow side has an air intake port (4A) on the top surface of the top cover (4) and an air intake port (4A) on the side surface of the top cover (4) and the side cover (5). In order to form the exhaust ports (4B) and (5B), it is preferable to leave a margin of at least 30 mm above the box, and the height of the machine box (2) is 200 mm.

In the first machine room (P), the condenser (32) is installed horizontally so that the fins are oriented vertically below the air intake port (4A) on the top surface because there are restrictions on the height of hearing in the machine box (2). A condenser blower (33) and a drain pan (34) are installed below it.
) is located. The drain tray (34) is provided with an evaporation promoting member (35) that sucks up the water accumulated in the drain tray and increases the area of contact with the air to facilitate evaporation. The evaporation promoting member (35) is made of a plate made of a hydrophilic material (for example, a porous resin material), with the plate surfaces facing horizontally and intersecting each other at right angles to form a lattice shape in plan view. (not shown), or one in which one plate surface is inclined and the other plate surface is crossed so that it faces in the horizontal direction [this is called an inclined body and is shown in Figure 1. We have adopted the following. By the way, when we tested both side-by-side, it was 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 (33) was not blown directly onto the water surface. This has the advantage of preventing the water surface from overflowing from the drain tray (34) due to its corrugated surface. Also,
Changing the direction of the wind on a slope, or using a drainage pan34)
It can also be expected that there will be an advantage in that it will be easier to take out the container when taking it out.

The second machine room (Q) is constructed of a main body (Ql) and a lid (Q2) made of a heat insulating material such as polystyrene foam into a single box-like shape, and a plate-fin type evaporator (36) is installed inside the second machine room (Q). A casing part (42) that communicates with the heat exchange part (41) and houses the evaporator blower (37), and an air inlet of the heat exchange part (41). It is formed between the return cold air inlet (39) and the temperature of the returning air is detected at the appropriate place, and when the temperature falls below a predetermined temperature (for example, 6°C), the operation of the compressor (31) is stopped and the temperature is maintained at a constant temperature ( For example, 9℃
) or above, a temperature control means (43) is installed to restart the operation of the compressor (31), and the intake air is gradually sloped lower from the cold air intake port (39) to the air inlet to allow air to circulate. part (44) and the casing part (4
A delivery section (45), which is formed between the air outlet (2) and the cool air delivery port (38), and serves as a conduit through which air can flow is integrally formed. In addition, the bottom of the heat exchange part (41B
) has a rectangular shape and has a sloped surface that gradually becomes higher from one side where the air inlet is located to the opposite side,
Lower side appropriate places (in this example, heat exchange part (41) and suction part (44)
) is located on the bottom of the part () for draining defrost water (
46). In addition, in order to prevent cold air from directly flowing into the casing part (42) from the suction part (44), a partitioning member (47) is used to partition the suction part (44) and the inlet opening (42B) of the casing part (42). has been set up.

Therefore, the return cold air led to the heat exchange part (41) via the suction part (44) is guided below the evaporator (36) and comes into contact with the evaporator (36) by suction by the blower (37). while moving from below to above the evaporator (36).

At this time, since the bottom surface (41B) of the heat exchange section (41) is sloped so as to be higher than the inlet side toward the other side, the return cold air is distributed almost evenly over the entire bottom surface of the evaporator (36). - (more volume on the inlet side and less volume on the low-speed opposite side, moving at high speed, resulting in an almost uniform flow), allowing uniform heat exchange throughout the evaporator (36) and efficient Can be cooled. In addition, the heat exchange part (41
) is similarly sloped so that the outlet side is higher and the opposite side is lower. On the other hand, the second machine room (Q
), the heat exchange part (41), casing part (42), and other parts are integrated with the heat insulating material,
The casing of the blower device (37) and the tube forming the air flow path can be omitted, and there is no need to connect them, and in addition, the heat insulation efficiency can be improved.

Further, a portion of the elbow (48) as a directing portion for directing the cold air conveyed in the horizontal direction upward may also be integrally formed so as to protrude laterally. On the other hand, below the drain hole (46), there is a drain tank () that stores the defrosting water and conveys it from the drain hole (46) to the drain pan (34).
40), and this drainage tank (40) has an inlet opening corresponding to the drain hole (46), a trap section for storing water, and an outlet opening.

Incidentally, the blowing bag f for an evaporator in the present invention is f! It should be added that (37) continues to operate regardless of the cooling operation and defrosting operation (however, off-cycle defrosting) of the evaporator (36) due to operation/stopping of the compressor (31).

〔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 air blower, is made of a heat insulating material and is placed in parallel with the first machine room, which houses other machine parts, as a machine box for storing cooling machine parts. , its height can be reduced. In addition, this second machine room has a cold air outlet and a return cold air intake in parallel, protrudes outward, and opens upward, making it easy to connect to pipe bodies such as blower pipes. I can do it.

In the first machine room, the condenser is installed horizontally below the air intake on the top surface, and the blower and drain pan are arranged vertically below it in order to reduce the height and reduce the height. Warm air is efficiently blown through the condenser onto the surface of the drain pan. In addition, this drainage tray is equipped with an evaporation promoting member that sucks up the stored defrosting water and increases the contact area with the air, so that the stored water in the drainage tray is efficiently evaporated and vaporized. It can be transported to the exhaust port.

Furthermore, by integrally forming the heat exchange section, suction section, casing section, and delivery section from the heat insulating material side of the 24th machine room, the heat insulation properties of each section are improved and miniaturization is facilitated. Since the bottom surface of the heat exchange section is sloped and air is introduced into the lower side of the slope, a uniform flow of air can be formed from the lower side of the slope to the higher side of the slope. This enables uniform cooling, and can be expected to improve cooling efficiency.

On the other hand, by taking advantage of the fact that the height of this machine box can be kept low, it is possible to place the machine box in the unused space formed below the display stand, which would previously be a dead space. can be used effectively. In addition, a display box is provided that is connected to the machine box through an air pipe to allow air circulation.
It is possible to construct a separate type of cooling Schiller case, and the display box is lightweight, and even when placed on the top of the display stand, the load on the display stand can be reduced compared to the conventional one.
It becomes possible to adapt the display box to various shapes and sizes. Incidentally, the display box itself can also constitute a display stand, that is, a display case.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention. Figure 1 is an exploded perspective view of the machine box, Figure 2 is an external perspective view of the showcase installed on a display stand, and Figure 3 is a longitudinal section of the display box. Figure 4 is a plan view of the second machine room, and Figures 5 to 8 are sectional views taken along A-A, B-B, CC, and D-D in Figure 4, respectively. It is. (1)... Showcase, (2)... Machine room, (3
)...Blow pipe, (4A)...Air intake port, (4
A), (5B>...exhaust port, (10)...display box, (P)...first machine room, (Q)...second machine room, (31)...compression machine, (32)...condenser, (33)...condenser blower, (34)...
・Drainage pan, (35)...evaporation promoting member, (36)
... Evaporator, (37) ... Evaporator blower, (
38)...cold air outlet, (39)...return cold air inlet, (41)...heat exchange section, (42)...casing section, (44)...intake section, ( 45)...
Sending section.

Claims (1)

[Scope of Claims] 1. A first machine room having an air intake port on the top surface and an exhaust port on the side surface and housing a compressor, a condenser, and a blower for the condenser, and a heat insulating material that connects the first machine room with the A second machine room is provided with an independently configured second machine room that is arranged in parallel with the first machine room and houses an evaporator and an air blower for the evaporator, and the second machine room projects outward and opens upward. A cooling machine box characterized by having a cold air outlet and a return cold air intake in parallel. 2. A condenser is arranged horizontally below the air intake port formed on the upper surface, and an air blower and a drain tray are arranged vertically in order below the condenser. 2. The cooling device according to claim 1, further comprising a first machine room in which an evaporation accelerating member is disposed between the drain tray and the air blower to suck up frost water and increase the area in which the defrosting water contacts the air. machine box. 3. A heat exchange section that is provided with an evaporator and has an inclined bottom surface, an intake section that guides the return cold air from the return cold air inlet to the lower lower side of the heat exchange section, and communicates with the heat exchange section. Claim 1 or 2, further comprising a second machine room in which a casing part for housing the air blower and a delivery part for guiding cold air passing through the casing part to a cold air delivery port are integrally formed with a heat insulating material.
Mechanical box for cooling as described. 4. The machine box according to claim 1, 2 or 3, which is disposed in an unused space formed by the legs at the bottom of the display stand, and which is constructed separately from the machine box and surrounded by a transparent member. a display box that displays and stores sales products in a product storage section and is placed on the display stand; and an air pipe that connects both boxes so that air can circulate and is arranged along the back of the display stand. A separate cooling showcase equipped with a mechanical box.