JPS63201472A - Showcase - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a showcase equipped with both refrigerated and heated storage areas.

(b) Conventional technology Recently, among the products stored in the storage room, such as canned beverages, using a single showcase, a combination of cooling and heating storage has been carried out in which some products are cooled and other products are heated at the same time. There is. This combined storage becomes more common during the winter when demand for keeping canned beverages warm increases. A showcase that adopts this combined storage method is generally called a hot-and-cold type.
As shown in Publication No. 9-81475 (F25D11102), a storage room is divided into upper and lower halves by a partition member having an elongated opening and an opening/closing member that can open and close this opening, and the upper area is a refrigerating and heating area. When the lower area is used as a refrigerated area and the upper area is used as a heated area, the entrance of cold air from the lower area, which is used as a refrigerated area, is blocked by an opening/closing member, while the heating element consisting of an electric heater is energized. The upper area is heated to serve as a hot storage area. The temperature of this heating area is 60℃ considering the temperature at which canned drinks are at their best.
It is set in the range of ~70°C.

(c) Problems to be solved by the invention According to the above-mentioned conventional technology, when heating with a heating element,
Warm air naturally convects within the heated storage area, but due to the nature of warm air, the upper part of the heated storage area is higher in temperature than the lower part, resulting in an uneven temperature distribution.

As a means to solve this problem, it has been proposed to install a blower that circulates warm air forcibly, but in addition to self-heating of the blower motor, the temperature of the windings rises abnormally due to the influence of the warm air, resulting in burnout. A new problem arises that leads to

(d) Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a cooler (14) and a blower fan (21) which are arranged inside the heat insulating box (2) constituting the main body. A cold air passageway (16) to be installed and a first storage room (16) cooled by forced circulation cold air from this cold air passageway.
17), and a second storage chamber (29) which can be switched into both a refrigerated storage area and a heated storage area.
A heat insulating compartment box (23) that forms a back passage (34) between the partition plate (15) and the cold air passage (16) for guiding cold air from the cold air passage (16) when placed in the storage room (17); ,
A storage section (77) formed on the back wall (28) of the heat-insulating compartment box, the back side of which faces the back passageway (34), and a second storage chamber (29) in which the motor (75) is stored. A blower (73) that circulates the air inside, and the back passage (3)
4) a directing plate (80) that directs the cold air passing through the storage section (77); a heater (68) disposed in the second storage chamber (29) and energized during heating; A first damper (56) that guides the cold air from the back passageway (34) to the second storage chamber (29) and a first damper (56) that directs the cold air from the back passageway (34) to the second storage chamber (29).
A second damper (57) for discharging to the storage room (17),
To provide a showcase (1) in which the flow rate of cold air in a back passage (34) is larger during hot storage than during refrigeration.

(e) According to the working example, both the first and second dampers (56x57) are closed and the heater (68) is energized to
When 9) is used as a heating area, the cold air supplied from the cold air passage (16) to the back passage (34) through the cold air outlet (2o) continues downward and reaches the lower passage (31). A part of the cold air is directed to the storage section (77) by the midway direction plate (80).
) to cool the motor (75) of the blower (73). That is, when the second storage room (29) is used as a hot storage area, compared to when it is used as a refrigerated area, the back passage (
34), and therefore the flow rate of cold air directed toward the storage section (77) also increases, so the cover (78) becomes hot due to self-heating and the effect of the heater (68). The cooling effect of the motor (75) which receives the radiant heat can be further promoted.

(F) Example Hereinafter, an example of the present invention will be described in detail based on the drawings.

6 to 8, (1) is a showcase according to the present invention, (2) is a lower wall (2A), a clay wall (2B), a back wall (
2C) and left and right side walls (2D) (2E), a heat insulating box body constituting the main body of the showcase (1); (3)
(4) and (5) are provided with handles (3a), (4a), and (5a), respectively, and are located at the right and bottom left of the front opening (2a) that serves as the product storage and takeout port of the insulating box (2). (6) is a heat-insulating box (
2) and shown in FIG.
), a condenser (8), a condenser blower (9), etc. are installed in this machine room. In addition, the lower wall (2A
) A drain port (10) is formed at the rear, and a drain pipe (11) is connected to this drain port. Also, (12) is a shade that doubles as a signboard attached to the front end of the upper wall (2B) of the insulating box (2), and inside this shade is a long and narrow fluorescent light (
13) is provided.

Further, at approximately the center of the opening (2a), a column (22) is provided which divides the opening into two sections on the left and right. A partition member (22A) is provided in between to further divide the left section into upper and lower halves.

Further, (15) is a partition plate provided with a space between the back wall (2C) and the earthen wall (2B) of the heat insulating box body (2), and this partition plate allows the cooler (14) and cold air, which will be described later, to be A cold air passageway (16) equipped with a circulation blower and the transparent door (3) (
The first storage room (1), which is opposite to the
7) is defined. Here, a top plate (15A) is provided on the right half of the upper path of the partition plate (15), and this top plate is connected to the upper wall (2
B) extends forward with a space between it and the lower surface of the opening (2a), and its front end is located above the inside of the upper edge of the right section of the opening (2a), thereby creating a first cold air blower along the right half of the upper edge of the opening (2a). Exit(
18) is formed. In addition, between the lower end of the partition plate (15) and the lower wall (2A), there is a cold air inlet (
19) is formed.

Note that a top plate is not provided in the upper left half of the partition plate (15). In addition, there are cold air blow-off holes (2) at the top of the partition plate (15).
0) is formed. (21) is a fan for circulating cold air installed at the top of the cold air passage (16), and this fan forces the cold air that has undergone heat exchange with the cooler (14) as shown by the arrows in Figures 6 and 7. It circulates to form an air curtain in front of the first storage chamber (17), and the partition plate (15
) is located to the right of the top center.

(23) is arranged at the upper left of the first storage room (17) in the insulated box (2), faces the transparent door (5), and serves as a refrigerated or hot storage area. This is a heat insulating compartment box that partitions the room (29).This heat insulating compartment box has both upper and lower walls (24 x 25
), left and right side walls (26 x 27), and a back wall (28), and the front is an opening that can be opened and closed by the transparent door (5). A partition member (2
A lower plate (3o) is provided facing the lower plate (3o), and a lower passage (31) communicating with the cold air passage (16) is provided between this lower plate and the lower wall (25) of the heat-insulating partition box (23). It is formed. In addition, the front end of the lower plate (30) and the partition member (22A
) is formed with a second cold air outlet (32) that blows out cold air from below the heat insulating compartment box (23). Further, an upper passageway (33) is formed between the earthen wall (24) and the earthen wall (2B) of the heat insulating box (2), and a back wall (28
) and the partition plate (15) are formed with a back passage (34) that communicates with the lower passage (31), and an upper passage (33) and a back passage that communicate with the cold air passage (16). The cold air in the cold air passage (16), which has been made high-pressure by the fan case (35), is guided to the cold air passage (34) from the cold air outlet (20) of the partition plate (15).

Hereinafter, Figs.
This will be explained in detail based on the figures. The insulation compartment box (23) is composed of both the inner and outer boxes (36 x 37) and the foam insulation material (38) filled between these two boxes, and the lower surface of the insulation compartment box (23) is connected to the left side wall (2D) of the insulation box (2). ), the partition plate (15), and the supports (39) provided on the pillars (22), respectively. A ring-shaped sealing member (40) is provided around the entire opening edge of the heat-insulating compartment box (23).

This seal member (40) has both the inner and outer boxes (36x37).
a hard base (41) having a U-shaped cross section that connects the front edges of the foam insulation material (38) to each other and prevents foam leakage of the foam insulation material (38);
It extends forward from both ends of this hard base and forms a heat insulating space (42) together with the base, the front surface of which is connected to the heat insulating box (2).
), the front edge of the left side wall (2D), the support (22A), and the soft fin pieces (43) that are in contact with the partition member (22B). The fin piece (43X43) is not formed on the upper side of the seal member (40) in order to form a ventilation passage (44) in front of it in order to cool a fluorescent lamp, which will be described later. (45) is a hanging wall extending downward from the front end of the upper wall (24) of the heat-insulating partition box (23). Immediately below the upper side of the sealing member (40) located in front of this hanging wall, there is a heat-insulating layer made of, for example, foamed polyethylene. material (46) is provided;
Immediately below this heat insulating material, a translucent cover (47) and an elongated fluorescent lamp (48) covered by this cover and illuminating the second storage chamber (23A) are provided. The cover (4
7) is an abbreviated metal plate (45) fixed to the hanging wall (45).
47A) and a translucent resin plate (47B), which has an abbreviated shape and is removably attached to this metal plate and serves as a shade, and these plates provide insulation around the fluorescent lamp (48). A space (49) is formed. (50) is the metal plate (
At least one ventilation passage formed near the end of the upper passageway (33) and the heat insulation space (49) communicates with each other, and guides cold air from the upper passageway (33) to the heat insulation space (49). In order to guide cold air into the heat insulating space (49) through this ventilation path (5o) and cool the fluorescent lamp (48), no fin piece (43 x 43) is provided on the upper side of the sealing member (40), and the heat insulating material (46) is made shorter than the length of the cover (47) to form a cold air ventilation path (44). Further, the heat insulating material (46) is provided to prevent condensation caused by excessive cooling of the cover (47) by cold air.

Further, the fluorescent lamp (48) is removably supported by an elastic holder (51) fixed to the hanging wall (45).

(52) is a cover plate that covers the right side of the heat-insulating compartment box (23), and this cover plate covers both the lower and back passages (31) (
34) to prevent cold air from leaking into the first storage chamber (17). This cover plate (52) is formed with an operation port (53) for operating an operation bar, which will be described later.

(54x55) is the earthen wall (24) of the insulation compartment box (23).
) and a part of the lower wall (25) are opened, and frame members (54A) (55A) are provided in the openings, respectively.
2nd storage room (23A) and both upper and lower roads (33x31
) are in communication with the cold air inlet and cold air outlet, and the cold air inlet and the cold air outlet are connected to the frame members (54A) (55A).
The first U-shaped first member is provided in each of the
, is freely opened and closed by the second damper (56 x 57).

Furthermore, grooves (58) are formed in the left and right directions on the upper and lower surfaces of the first and second dampers (56X57), respectively. (60
) is an operation bar that interconnects the first and second dampers (56 x 57). This operation bar (60) is made of a metal rod bent into a U-shape, with both upper and lower sides (61 x 62) and side sides (63)
Disk-shaped fitting members (64A) (64B) are fixed to substantially central portions of both the upper and lower sides (61) and (62). These fitting members are the first and second dampers (5
6) are fitted into the grooves (58) of (57), respectively. or,
The tips of both the upper and lower sides (61) (62) are pins (5) that serve as fulcrums.
9) is rotatably supported by the earthen wall (24) or the lower wall (25).

Further, a side edge (63) that faces the right side wall (27) of the heat insulating compartment box (23) and also serves as a handle extends in the vertical direction along the outer surface of the right wall (27) of the heat insulating compartment box (23). The center is supported by a guide rail (65) fixed to the right side wall (27). A sliding groove (66) for moving the operating bar (6o) in the front-rear direction is formed in the guide rail (65). The sliding groove (66) has an operation bar (60
) is passed through the support shaft (67) of the center shaft. Further, the second damper (57) is provided with a magnet (IVI), and the lower surface of the lower wall (25) corresponding to the magnet (IVI) has a magnet (CM) when the second damper (57) is closed.
is close to each other and turns on due to its magnetic force, and the second storage chamber (29)
A reed switch (S) is provided to energize a heater (68) consisting of an electric heater arranged inside.

Here, to explain the opening and closing operations of both the first and second dampers (56) (57), the operation port (53) of the cover plate (52)
When the operation bar (6o) is moved forward as shown by the solid line in Figure 5, the first and second dampers (56 x 57) are also moved forward, and the cold air inlet (54) and cold air outlet (55) are moved forward. With this opening, the cold air in the upper passage (33) flows through the cold air inlet (54), the second storage chamber (29), the cold air outlet (55), the lower passage (31), and the second storage chamber (33). 29
) is the refrigerated area. Moreover, when the operation bar (60) is moved rearward as shown in the dashed line in FIG. 5 to use the second storage chamber (29) as a hot storage area, the first,
The second dampers (56) and (57) also move rearward, and both the cold air inlet (54) and the cold air outlet (55) are closed, and the cold air supply from the upper passage (33) to the second storage chamber (29) is blocked. will be cut off.

At this time, the reed switch (S) is turned on to energize the heater (68), and along with this energization, the second storage chamber (2
9) is heated by a heater (68) and becomes a hot storage area.

Note that (69) is a pull-out shelf provided in the second storage room (29).

(70) is a partition plate arranged in the second storage chamber (29) so as to be located directly below the heater (68), and (71) is a partition plate located behind this partition plate and directly below the cold air inlet (54). This is a fan case arranged in the second storage chamber (29) so as to be located at the partition plate (70) and the fan case (7
1) and the earth wall (24) and back wall (28) of the heat-insulating compartment box (23).

(73) is a blower that forcibly circulates the air in the second storage room (29) as shown by the chain arrow in Figure 1, and its propeller (73)
4) is a ventilation hole (
76), while the motor ('75) is housed in a storage section (77) formed through the back wall (28), regardless of the temperature of the second storage chamber (29). Second
It is always operated even when the storage room (29) becomes a refrigerated area or a hot storage area. The front opening of the storage section (77), that is, the surface on the second storage chamber (29) side, is covered with a metal cover (78), and the back opening, that is, the surface on the back passageway (34) side, is covered with a metal cover (78). A part of the cold air passing through the passage is stored in the storage section (77
A metal orientation plate (80) is provided with a orientation piece (79) pointing in ). Due to the arrangement of the orientation plate (80), the upper part of the rear opening of the storage section (77) has an entrance (8
1), an outlet (82) is formed at the bottom, and a directing piece (79)
) Directly guided cold air cools the storage section (77) from the inlet (81), and then flows from the outlet (82) to the back passage (3).
4) and flows into the lower passage (31).

According to this configuration, both the first and second dampers (56) (5
7) is opened to make the second storage room (29) a refrigerated area, one of the cold air supplied from the cold air passage (16) to the back passage (34) through the cold air outlet (2). After being diverted from the upper passage (33) and guided into the second storage chamber (29) through the cold air inlet (54), the cold air outlet (55) leads to the lower passage (31) and the back passage (34). The cold air flows through the second outlet (32) to the insulation compartment box (23).
It is blown out into the first storage chamber (17) below. in this case,
Since the second storage room (29) serves as a refrigerated area and is supplied with cold air, the flow rate of cold air passing through the back passage (34) is reduced, and the directing plate (80) directs the cold air to the storage section (77). Although the amount of cold air introduced is reduced, the heat generated by the motor (75) of the blower (73) itself is also small, and the cold air directly or indirectly from both the front and back surfaces of the storage section (77) is used to drive the motor (75).
), it is possible to suppress the rise in temperature of the windings of the motor (75).

In addition, when both the first and second dampers (56 x 57) are closed and the heater (68) is energized to make the second storage room (29) a hot storage area, the cold air outlet is opened from the cold air passage (16). (
The cold air supplied to the back passageway (34) through the passageway (20) continues downward and passes through the directing plate (31) on the way to the lower passageway (31).
80), a portion of the cold air bypasses the storage section (77) and cools the motor (75) of the blower (73).

That is, when the second storage room (29) is used as a hot storage area,
The flow rate of cold air passing through the back passageway (34) increases compared to when the area is used as a refrigerated area, and therefore the flow rate of cold air directed toward the storage section (77) also increases. ) The cooling effect of the motor (75) which receives the radiant heat of the cover (78) which becomes high temperature due to the effect of
As a result, it is possible to suppress the temperature rise of the windings of the motor (75) and avoid a burnout accident of the windings.

(G) Effects of the Invention According to the present invention described above, when the second storage chamber is used as a hot storage area, the flow rate of cold air passing through the back passage becomes larger than when it is used as a refrigerated area. Since the flow rate of cold air directed toward the storage compartment increases, the cooling effect of the motor, which receives radiant heat from the cover that becomes hot due to the influence of the heater in addition to self-heating, can be further promoted, and as a result, the temperature of the motor windings decreases. It is possible to suppress the rise and avoid burnout accidents and abnormal heating in the hot storage area.

[Brief explanation of the drawing]

The drawings all show embodiments of the showcase of the present invention.
The figure is a longitudinal sectional view of the main part, Fig. 2 is a rear perspective view of the main part, Fig. 3 is an overall front perspective view of the insulation compartment box, Fig. 4 is a longitudinal sectional view showing the second damper, and Fig. 5 is a diagram of the insulation compartment. A perspective view showing the right side of the box, Fig. 6 is a sectional view taken along the line A-A of Fig. 8, and Fig. 7 is a cross-sectional view taken along the line B-B of Fig. 8.
The sectional view and FIG. 8 are overall front perspective views. (2)...insulation box, (14)...cooler, (
15)...Partition plate, (16)...Cold air passage, (
17)...First storage room, (21)...Blower fan,
(23)...Insulated compartment box, (28)...Back wall,
(29)...Second storage chamber, (34)...Back passage, (56)...First damper, (57)...Second damper, (68)...Heater, ( 73)...Blower, (75)...Motor, (77)...Storage section, (80)...Direction plate. Figure 8 Figure 2 Figure 3 Figure 4 Figure 7 Figure 5

Claims (1)

[Claims] 1. A partition plate is placed inside the insulated box that constitutes the main body, and partitions a cold air passageway in which a cooler and a blower fan are installed, and a first storage room that is cooled by forced circulation cold air from this cold air passageway, and a partition plate for refrigeration and heating. a heat insulating compartment that forms a second storage compartment that can be switched to both storage areas, and that forms a back passage that guides cold air from the cold air passage between the partition plate and the partition plate when the second storage compartment is disposed within the first storage compartment; a box, a storage part formed on the back wall of the insulated compartment box and whose back face faces the back passage; a blower having a motor stored in the storage part and circulating air in the second storage compartment; a directing plate that directs the passing cold air toward the storage compartment; a heater disposed in the second storage compartment; a first damper that directs the cold air in the back passage to the second storage compartment; The second part that sends cold air to the first storage room
A showcase equipped with a damper.