JPH073308B2 - Ventilation method of condenser - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a ventilation method for a condenser such as a refrigerated showcase used as a sushi display case in a sushi restaurant or the like.

(B) Prior art In the display case, which is disclosed in JP-A-57-164017 (A47F3 / 04), a compressor, a condenser and a blower fan are arranged in a machine room,
A structure in which an opening and an exhaust guide surface are formed in the unit base portion is disclosed, and in the display case of Japanese Utility Model Laid-Open No. 59-139166 (A47F3 / 04), a compressor, a blower fan, a storage room are provided in a machine room. Disclosed is a configuration in which fin-tube type condensers are arranged in the passages directly below, and ducts are provided to connect the machine chamber and the passages.

(C) Problems to be Solved by the Invention Both of the above-mentioned two conventional techniques are intended to cool the compressor and the condenser by forced ventilation by a blower fan, but with the outside air sucked into the machine room from the outside. In order to cool either the compressor or the condenser first and the other later, the compressor or the condenser that is cooled afterwards will be cooled by the warmed-up outside air. However, there is a problem that the cooling efficiency is lowered. Particularly, in the case where the condenser is arranged in the passage directly below the storage chamber as in Japanese Utility Model Laid-Open No. 59-139166, the heat exchange of the condenser is not only bad because the warm air from the machine room is sent to the narrow passage. However, the lower surface of the storage chamber is heated by the radiant heat of the condenser in addition to the warm air, which causes a problem of increasing the refrigeration load. In addition, the warm air that has cooled the compressor and condenser is exhausted to the outside (inside the store) at that high temperature, so the warm air that hits the customer sitting at the counter or the sushi that is placed on the counter. There was also a problem that the temperature rises due to warm air.

(D) Means for Solving the Problems In order to solve the above problems, the present invention straddles under both the storage room (7) and the machine room (8) and stores the storage room side area (33A) and A passage (33) formed by communicating the machine room side area (33B) with each other, and a blower fan (8) housed and arranged across the machine room side area (33B) and the machine room (8) of the passage (33).
2) and a compressor (80) and a condenser (8) that are cooled by the blower fan (82) and housed in the machine room (8).
1), an opening (22) that connects the machine room (8) and the passage (33) to each other, and a window (64) that connects the machine room (80) to the outside, and the blower fan ( 82) from the machine room (8) through the opening (22) to the passage (3
(3) A method for ventilating a condenser is provided, which is operated so that the outside air flows into the storage chamber side area (33A) and the outside air from the machine room side area (33B) is sucked.

(E) Action The blower fan (82) introduces the outside air into the machine room (8) through the window (63) to cool the condenser (81) and the compressor (80), and at the same time, the machine in the passage (33). Suck outside air into the room side area (33B). The outside air that has cooled the condenser (81) and the compressor (80) flows from the opening (22) to the storage chamber side area (33A) of the passage (33) and is sucked into the machine room side area (33B). Join the outside air. Therefore, the condenser (81) and the compressor (8
Since the temperature of the outside air heated by cooling (0) is higher than that in the machine room side area (33B), the temperature of the outside air discharged from the storage room side area (33A) can be lowered.

(F) Embodiments Embodiments of the present invention will be described below with reference to the drawings.

(1) is a horizontally long refrigerated showcase such as a sneaky case, which is composed of a horizontally long substrate (2) arranged on the bottom surface and a curved glass, and is formed on the front and rear half of the upper surface. A glass plate (3), a horizontally long upper frame (4) arranged in the rear half of the upper surface, mutually symmetrical side plates (5) (6) arranged on both left and right side surfaces, the substrate (2), The space surrounded by the glass plate (3), the upper frame (4) and the side plates (5) and (6), that is, the inside of the compartment is divided into left and right, and one (left in the embodiment) is the storage chamber (7) and the other is the other. A partition plate (9) having a machine room (8 in the example) on the right side;
Two glass doors (10) (11), which are slidable in the left-right direction, arranged on the back surface corresponding to the storage room (7), and a lid (12) arranged on the back surface corresponding to the machine room (8). The main body is composed of and.

As shown in FIGS. 1 and 2, the substrate (2) has a width substantially equal to the width of the main body, that is, a metal lower plate (a length of the storage chamber (7) to the machine chamber (8)). 13) and the upper plate (14) of the storage chamber (7), which is located above the lower plate with a space between them, and which also serves as the bottom plate of the storage chamber (7) and also serves as the dew receiving plate, and has the same shape. , The front and rear members (15) (16) made of resin having a width substantially equal to the width of the main body, and the upper and lower plates (14) (13) are connected, and one side plate (5) or partition plate (9) is connected. A U-shaped metal spacer (17) (18) extending in the front-rear direction for mounting, a U-shaped metal mounting member (19) extending in the front-rear direction for mounting the other side plate (6), and the upper and lower parts. It is composed of a heat insulating material (20) such as styrofoam or rigid polyurethane arranged between both plates (14) and (13). The lower plate (13) serves as the lower surface of the machine room (8), and the machine room (8) and the below-mentioned passage are provided in a part where a compressor, a condenser, etc., which will be described later, are installed, that is, a part of a so-called unit base part (21). An opening (22) for communicating is formed. The upper plate (14) has a recess (23) for accommodating a cooler described later.
And an annular part (24) around the recess and front and rear compatible upper parts (25) (26) rising upward from both front and rear sides of the annular part. Further, the spacers (17) (18) and the mounting member (19) have the same shape, and when the storage chamber (7) is formed on the right side and the machine room (8) is formed on the left side, the space is formed. The child (17) serves as a mounting member, and the mounting member (19) serves as a spacer.
The front and rear members (15) (16) have elongated groove portions (27) (28) whose upper surfaces open along the upper edges thereof, and elongated dovetail grooves (29) which open a part of the lower surface immediately below these groove portions. (30) is formed, metal reinforcing plates (31) and (32) are closely attached to the inside, and a storage room side area (33A) and a machine room side area (33B) are provided between them. The front and rear legs (34) and (35) are formed as passages (33) each of which has an opening on one side of the both areas. The lower end of the glass plate (3) is fitted into the groove (27) of the front member (15) through a U-shaped soft packing (36), and slides in the groove (28) of the rear member (16). The rails (37) and the lower ends of the glass doors (10) and (11) and the lower ends of the lids (12) that are in sliding contact with the slide rails are fitted. Also, the dovetail groove (29) of the front and rear members (15) (16)
The upper and lower parts (25) (26) of the upper plate (14) are fitted in the (30).

Further, the glass plate (3) has a second inner surface on a portion corresponding to the machine room (8) made of a transparent glass plate material having a heat of 5 mm, for example.
As shown in FIG. 3 to FIG. 3, an opaque ceramic which is colored in any color is coated, and a portion corresponding to the storage room (7) is a transparent portion (38A) and a portion corresponding to the machine room (8) is an opaque portion (38B). ) And then subjected to a bending process.

Further, the upper frame (4) is made of an extrudable resin having a width substantially the same as the width of the main body, that is, a length extending from the storage chamber (7) to the machine chamber (8), As shown in FIG. 5, a mounting part (40) is formed along the front end of the glass plate (3), and the rearward upper end of the glass plate (3) is mounted via a soft packing (39). An elongated resin stopper member (4) also formed as an opening for pressing the upper end of the glass plate (3) through the packing (39).
A housing groove portion (42) for receiving 1) and a slender metal reinforcing member (43) which is formed with a lower surface opened at the rear of the housing groove portion and also serves as a support member for hanging a cooler to be described later are stored. In addition, a storage groove portion (45) that forms a heat insulating space (44) between the reinforcing material and a double wall portion (47) that is curved behind the storage groove portion and forms a heat insulating space (46). ), And is formed by opening downward along the lower end of this double wall,
A groove (4) which faces the groove (28) of the rear member (16) and fits the upper ends of the glass doors (10) (11) and the lid (12).
8) and (48) are provided.

The both side plates (5) and (6) are made of resin and have trapezoidal windows (49) and (50) having the same shape as shown in FIGS. 2 and 3, respectively. The window (49) of the side plate (5) opposite to (7) has a transparent plate (5
1) is provided, and the window (50) of the side plate (6) facing the machine room (8) is provided with a mesh filter (55) supported by a metal frame member (52). The both side plates (5) and (6) have fitting grooves (53) and (54) for fitting both ends of the glass plate (3) at the upper edges facing each other and can be used in common with each other. When 7) is formed on the right side and the machine room (8) is formed on the left side, the side plate (5) is provided on the right side and the side plate (6) is provided on the left side. The mesh filter (55) has the same shape as the mesh filter (described later) provided on the lid (12), and therefore, the frame member (52) is used as an auxiliary member when it is attached to the window (50).

The partition plate (9) is made of a heat insulating material such as resin, and has a recess (57) for accommodating the heat insulating plates (56) on both left and right sides as shown in FIGS. 1, 5, and 6. ) (58) is formed, and pipe lines (59) (6
0) is formed on the left and right sides, that is, the rear side opening (67) defined by the upper frame (4) and the rear member (16), that is, the storage room (7) side and the machine room (8). ) Side is provided with a rear extending portion (61) interposed between the groove portions (28), (48) and (48) facing each other. Further, the partition plate (9) has a band-shaped heat-insulating sealing material (62) at a portion facing the glass plate (3).
Is provided. The heat insulating plate (56) is housed in the recess (57) when the machine room (8) is on the left side of the main body.

Further, the lid (12) is made of an appropriate material such as a metal plate or a resin plate, and is fitted into the groove portions (28) (48) facing each other as in the glass doors (10) (11) as described above. It is detachably fitted and placed in the rear opening (67). This lid (12) is formed with a rectangular window (63) for communicating the machine room (8) with the outside (inside the store) as shown in the sixth part, and this window has the mesh filter (55) and A mesh filter (64) of the same size is fitted. In addition to the window (63), the lid (12) has an earth leakage breaker (65) as shown in FIG.
An inspection window (66) for exposing a part of the earth leakage breaker (65) to the outside is provided to inspect the outside from the outside without opening the lid (12).

Thus, (70) and (71) are coolers each consisting of an evaporation pipe bent in a meandering shape, which are arranged in the storage chamber (7) as shown in FIG. The vessel (70) is fixed in place by a resin clasp (72) suspended from the reinforcing material (43), and the cooler (71) arranged below.
Is fixed in place by a resin clasp (73) attached to the upper plate (14), and the food to be cooled stored in the storage chamber (7), for example, shredded, is cooled by both of them. To a suitable temperature. (74) is both the coolers (70) (7
In the connecting pipe which is a part of 1), both the coolers (70) (71)
Similarly to the above, the cooling action cools the storage chamber (7). Frost formation occurs in both the coolers (70) (71) and the connecting pipe (74) due to the cooling action, and the confirmation of this cooling action is confirmed by the connecting pipe (74) extending vertically in the storage chamber (7). Can be done from outside. Reference numeral (75) is a drainboard having a large number of ventilation passages (76), which are arranged in the recesses (23) of the substrate (2) to cover the cooler (71) and cool through the ventilation passages (76). It promotes convection of cold air that has undergone heat exchange in the vessel (71).

(80) is a refrigerant compressor, (81) is a plate fin type condenser, (82) is an axial flow type fan, and both the coolers (7
0) (71) and these refrigerating parts that constitute a refrigerating cycle are unit base parts (2
Installed in 1). Along with this attachment, part of the condenser (81) and the blower fan (82), that is, the lower portion, passes through the opening (22) and is installed in the machine room side area (33B) of the passage (33). Reference numeral (83) is a fan case that also serves as both the left and right tube plates of the condenser. Similarly to the condenser (81) and the blower fan (82), the lower portion thereof passes through the opening (22) and the passage (3
It is installed in 3). This fan case (83) forms a low-pressure area in the machine room (8) along with the operation of the blower fan (82) and a high-pressure area in the passage (33) directly below the condenser (81) to the storage room (7). Thus, the ventilation port (84) for forming the propeller (82A) of the blower fan (82) is formed.

The blower fan (82) is operated together with the compressor (80), and accompanying this operation, outside air is passed through the filters (55) (64) as shown by arrows in FIGS. ) While sucking the outside air into the machine room side area (33B) of the passage (33) from one end (right side) of the passage (33). The outside air sucked into the machine room (8) first rises in temperature as the compressor (80) is cooled and becomes warm air, and is then heat-exchanged with the hot gas passing through the condenser (81). After further raising the temperature, it flows through the opening (22) into the passage (33), and is exhausted from the other end (left end) of the passage storage chamber side area (33A). On the other hand, the machine room side area (33B) of the aisle (33)
The outside air sucked into the heat exchanger is heat-exchanged in the lower part of the condenser (81) protruding downward from the unit base portion (21), and then merges with the warm air that has passed through the opening (22) to form the passage (33). Exhaust to the outside (inside the store) through the storage room side area (33A).
That is, ventilation cooling of the condenser (81) is performed by both the outside air sucked into the machine room (8) and the outside air sucked into the machine room side area (33B) of the passageway (33).

Therefore, according to such a ventilating method of the condenser (82), not only the outside air heated by cooling the compressor (80) in the condenser (81) but also the machine room side area of the passageway (33) ( 33B) can be cooled by the outside air of low temperature introduced to the condenser (8
The condensing temperature of 1), that is, the heat exchange temperature can be lowered, and the outside air from the machine room side area (33B) is cooled by the condenser (8
Even if heat is exchanged in 1), the temperature is lower than the outside air that has cooled both the compressor (80) and the condenser (81). The temperature of the outside air to be exhausted can be lowered.

(G) Effects of the Invention According to the present invention described above, the effects listed below occur.

Since the condenser is cooled not only by the outside air heated by cooling the compressor but also by the outside air having a low temperature introduced directly into the machine room side area of the passage, the heat exchange temperature can be lowered, resulting in the result. , The heat exchange efficiency is improved and the required refrigerating capacity is obtained.

Even if the outside air introduced into the machine room side area of the passage is heat-exchanged by the condenser, the temperature is lower than the outside air that has cooled both the compressor and the condenser. The temperature of the outside air discharged from the side area to the outside air can be lowered, and as a result, it is possible to improve the conditions for exhausting air into the store.

[Brief description of drawings]

Each of the drawings shows an embodiment of the ventilation method for the condenser of the present invention,
1 is a sectional view taken along the line AA in FIG. 2, FIG. 2 is an overall front perspective view of the refrigerated showcase, and FIG. 3 is an overall rear perspective view thereof.
2 is a sectional view taken along the line BB of FIG. 2, FIG. 5 is a sectional view taken along the line CC of FIG. 2, and FIG. 6 is a sectional view taken along the line DD of FIG. (7) ... storage room, (8) ... machine room, (22) ... opening, (33) ... passage, (33A) ... storage room side area, (33
B) ... Machine room side area, (64) ... Window, (80) ... Compressor, (81) ... Condenser, (82) ... Blower fan.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadao Okada 180 Sakata, Oizumi-cho, Gunma-gun Ogura-gun, Toyo Sanyo Electric Co., Ltd. Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A passage (33) which extends below both the storage room (7) and the machine room (8) and which connects the storage room side area (33A) and the machine room side area (33B) to each other. , The passage (3
Blower fan (82) housed and arranged across the machine room side area (33B) of 3) and the machine room (8), and the fan fan (82)
A compressor (80) and a condenser (81), which are cooled in the machine room (8) and housed in the machine room (8), and an opening (22) for communicating the machine room (8) and the passage (33). , A window (64) for communicating the machine room (80) with the outside, and passing the blower fan (82) from the machine room (8) through the opening (22) to the passage (33). A method for ventilating a condenser, characterized in that the operation is performed so that the outside air flows into the storage room side area (33A) and the outside air from the machine room side area (33B) is sucked.