JPH02233966A - Refrigerating device - Google Patents

Abstract

PURPOSE:To increase the area of the interior of a display chamber through communication of a cooler chamber with a cold air passage, to facilitate cleaning, and to enable a fresh food to be preserved in an excellent state through prevention of dry by a method wherein a cooler is disposed in a cooling chamber on the machine room side, the display chamber is formed with an outer and an inner box between which the cold air passage is formed. CONSTITUTION:A cooler chamber 12 is partitioned into the blow fan side and the cooler side by means of a partition plate 64. On the cooler side, a plurality of air direction plates are radially deposed in the vicinity of the delivery port of the blower fan 14 mounted to a machine room 3, and air from the blower fan 14 is properly directed to a cooler 15. A display chamber 2 has a material case 1 in which a display space 65 is formed is formed with an inner and an outer box. Cold air fed with a pressure with the aid of a blower fan 14 is circulated such that it flows through an opening 12a to the cooler chamber 12 and flows through cold air passages 20, 28, 29, and 40 and returns to the cooler chamber 12 through the opening 12b. The cold air passage 40 is communicated to the cold sir passage 29. This constitution enables cooling of goods to be displayed without disposing a cooler and a cooling pipe in the display chamber 2.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a refrigeration device such as a refrigerated showcase or a topping case used for displaying toppings in, for example, a sushi restaurant. [Prior Art] As is well known, such a refrigeration device has a machine room that houses a compressor, etc., and a display room that houses a cooling vibrator, etc., and cools the device by expanding refrigerant sent from the compressor. Pass it through the pipe
It is used to cool, display and preserve, for example, sushi toppings in a display room, and various structures have been proposed and used in the past.

However, as shown in Japanese Unexamined Patent Publication No. 62-37685, for example, all of them had a structure in which a cooling pipe was provided in the display chamber, a refrigerant was passed through the pipe, and the interior of the display chamber was cooled by evaporation of the refrigerant. [Problems to be Solved by the Invention] However, according to the conventional structure as described above, since the cooling pipe is located inside the display room, (1) the cooling pipe is damaged when taking out and taking out items on display or when cleaning the display room; (2) Since the refrigerant is directly evaporated by the cooling vibrator, the moisture in the display room condenses and forms frost on the outer circumferential surface of the cooling pipe, accelerating the drying of the atmosphere inside the display room. (3) If the operation is stopped, the above-mentioned frost will fall on the displayed items, forcing continuous operation and making it difficult to control the temperature inside the refrigerator. (4) Since there is a temperature difference between the cooling pipes and the display room, airflow due to natural convection occurs, which may cause problems when the displayed items are particularly fresh foods. There were various problems such as discoloration of the surface of fresh food due to the influence of airflow. Therefore, an object of the present invention is to provide a refrigeration system that does not have the various problems (1) to (4) mentioned above. [Means for Solving the Problems] In order to achieve this object, the present invention provides a refrigeration system that includes a machine room that accommodates a compressor, a condenser, etc., and a display room that accommodates items to be displayed. In this case, the display room is composed of an inner box and an outer box, and a cold air passage is defined between the inner box and the outer box. Furthermore, the machine room defines a cooler room surrounded by a heat insulating material inside the machine room so as to communicate with the cold air passage. A cold air circulation system and a cooler are installed inside the cooler room, which circulate cold air into the cold air passage and the cooler room. [Function] The cooler through which the refrigerant flows is not located in the display room, but in the cooler room on the machine room side.The display room is usually made up of an inner box and an outer box with a cold air passage between them. The chamber is connected to this cold air passage. Therefore, when the blower fan, which is a cold air circulation device, is driven, the cold air cooled by the cooler flows into the cold air passage defined between the inner box and the outer box.
It does not flow into the exhibition room. [Embodiments] Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which the same reference numerals indicate the same or corresponding parts. In addition, although the present invention will be described below with reference to a case where it is applied to a topping case used in a sushi restaurant, etc., as is clear to those skilled in the art, it can also be used to store or display items other than sushi toppings. It is not limited to neta cases. FIG. 1 shows an outline of a neta case (refrigeration device) 1 according to the present invention. A side force bar 4 fitted to a top force bar 34 is attached to the top force bar 34. Therefore, almost the entire length between both ends of the neta case 1 is the display room 2. When this topping case 1 is placed on a counter (not shown) in a sushi restaurant, the front side in FIG. 1 is placed facing the customer, and the back side shown in FIG. It is placed towards the craftsmen. On the back side, as shown in Figure 2, there is a power cord 5 to the machine room 3, a ground wire 6, a drain pipe 7, a rear cover 8, a ventilation hole 9, a center frame 1o, a sliding door 11, and a power on/off switch. There are switches such as S. Additionally, a transparent double windshield is installed on the customer side, as described below. 3 and 4 are cross-sectional views showing the neta case 1 shown in FIGS. 1 and 2 along a vertical cross section and a horizontal cross section in the longitudinal direction, respectively, and it can be understood from these figures. As shown, in the machine room 3 surrounding the cooler room 12 defined by the heat insulating structure 21 made of a heat insulating material 27, there is an electrical equipment panel 13, a blower fan (cool air circulation device) 14, a cooler 15, preferably a rubber A compressor 16 supported by legs 17, condenser fans 18a, 18b, a condenser 19, a duct forming plate 33, etc. are arranged. The cooler 15, compressor 16, and condenser 19 are interconnected by refrigeration piping (not shown) to form a refrigeration circuit. The cooler chamber 12 is partitioned into a blower fan side and a cooler side by a partition plate 64, and on the cooler side, a plurality of wind direction plates 32 are arranged radially near the outlet of the blower fan 14. The wind from the blower fan 14 is connected to the cooler 1.
5 is properly oriented. Further, in FIG. 4, reference numeral 30 indicates a thermostat, and reference numeral 31 indicates a thermostatic section thereof.

A display room 2 defining a display space 65 within the material case 1
The box is composed of an inner box and an outer box, and cold air passages 20, 28, 29, and 40 are formed between them. Openings 12a and 12b are formed in the upper part of the cooler chamber 12, which communicate with the ends of the cold air passages 20 and 29, respectively, and the air is fed under pressure by the blower fan 14 as shown by the arrows in FIG. The cold air exits the cooler chamber 12 through the aforementioned opening 12a and enters the cold air passages 20, 28, 29 and 40.
The air is circulated through the opening 12b and returns to the cooler chamber 12 through the opening 12b. Cooling passage 40 is shown in FIG. 5 and communicates with cold air passage 29. In FIG. 5, the cold air passages 29 and 40 appear to be blocked by the fixing member 42, but the fixing member 42 does not extend long along the case 1, but is actually spaced apart. The cold air passages 29, 40 are relatively short.
are connected to each other. Although not shown, the cold air passage 40 also communicates with the passage 28. The inner box of the display room 2 has an oval shape 25 formed by a bottom plate 23, side plates 24, top plate 36 and an inner windshield 39 (see Fig. 5).
and an outer windshield 38 (see Fig. 5). The outer windshield 38 is double glazed as shown. As shown in FIG. 3, a heat insulating material 26 is filled between each side force bar 4 and the side frame 25, and the bottom plate 23 from the top of the cooler chamber 12 to the cold air passage 28 is filled with a heat insulating material 26. Appropriate insulation material 2 on the back side
2 is attached.

The condenser fan described above does not consist of only one large-diameter fan, but consists of two small-diameter fans 18a and 18b so that the height of the tiw chamber 3 can be lowered. Furthermore, by employing two fans 18a and 18b, each fan can share the cooling area of the condenser 19 by sucking air, so even if the diameter is made small, the heat exchange efficiency of the condenser 19 will not decrease. No. The air discharge side of the fan 18a is directed toward the compressor 16, and the fan 18b
is directed toward the front side of the machine room 3, that is, toward the customer side, and is used to cool the condenser 19, and when the temperature rises, hot air is sent to the machine room 3.
The front cover 52 (see FIG. 5) of the camera is directed toward the front cover 52 (see FIG. 5). The front cover 52 has an opening 5l, and the warm air passes through the opening 51, passes through a passage 50 defined by the air guide 44 as shown by the arrow in FIG. 5, and flows along the outer surface of the outer windshield 38. This prevents the customer's windshield 38 from fogging up. As best seen in FIG. 5, which shows a cross-section along the line V--V in FIG. Support Neta Case 1 on the counter through the support. Further, the heat insulating structure 21 made of the heat insulating material 27 at the bottom defining the outer box of the display room 2 is inclined upward from the left side in FIG. 5 to the right side in FIG. The space inside the machine room 3 is higher on the craftsman side (on the right side in Figure 5) than on the customer side, and if anything, the cooler 15, compressor 8l16, condenser 19, etc. in the machine room 3 occupy a relatively larger space. The structure is such that it can accommodate enough equipment, and these equipment are installed toward the craftsman's side (upper side in Figure 4), as shown in Figure 4. In this way, the heat insulating elliptical body 2
1, the bottom plate 2 of display room 2 above it
3 also defines the above-mentioned passage 20 5! ] They are placed a predetermined distance apart and tilted in the same way. The heat insulating structure 21 extends to the outer front windshield 1 to or near the lower end of the glass 38 and the inner windshield 39. The bottom plate 23 is bent before the lower end and approaches the heat insulating structure 21, and the bottom plate 23 is bent before the lower end. A corner portion 66 extending in the longitudinal direction of the neta case 1 is formed near the top. The bottom plate 43 is removably disposed in the groove 66 so as to be substantially flush with the upper surface of the bottom plate 23. Although not shown in the drawings, it is common to spread ``drainboard'' or ``ginsu'' on the bottom plate 23 and the bottom plate 43, and to place the toppings on top of them. Drain ports 45 are formed at appropriate locations on the bottom plate 23 and the heat insulating structure 21 (in the embodiment, two locations as seen in FIG. 4) so as to communicate with the above-mentioned extinguishing portion 66 via the seal member 48. A drain hose 49 is connected to this drain port 45 via a connecting pipe 47, and the drain hose 49 communicates with the drain pipe 7. Seal member 48 having an opening
is held by forming an annular embossed portion 46 on the bottom plate 23 and fitting the embossed portion 46 into the opening of the seal member 48. Furthermore, as shown in FIG.
A book rail portion 55 is formed, and two rail portions 53 are formed at the upper end of the rear cover 8 of the machine room 3 to receive the lower end of the sliding door 11 via a slider 54. It can be opened and closed to the left and right along lines 53 and 55 (in the direction perpendicular to the page in Figure 5). rail 53
is placed on the upper end of the bottom plate 23 and stably supported. The lower end of the bottom plate 23 is bent into an L-shape and supports the lower end of the inner windshield 39 via a packing 41a, and the upper end of the inner windshield 39 is supported by the top plate 36 and its fixing member 42 via a packing 4lb. It is supported by On the other hand, the lower end of the outer windshield 38 is supported by the lower end of the heat insulating structure 21 via a packing 37a, and the upper end thereof is supported by the other longitudinal end of the top force bar 34 via a packing 37b. Although not explained in detail, in FIGS. 3 and 6, reference numeral 59 indicates a sealing member for sealing the cooler chamber 12;
In the figures and FIG. 6, reference numeral 60 denotes a drainage pipe for discharging water from the cooler chamber 12, and in FIGS. 4 and 7,
Reference numeral 62 is a mounting plate for attaching compression 1fi16;
In FIG. 8, reference numeral 63 indicates a seal member. [Effects of the Invention] As described above, according to the present invention, objects to be displayed in the display room can be cooled without disposing a cooler or a cooling pipe in the display room. In this way, by eliminating the cooling pipe from the display room, the display room can be used more widely, cleaning is easier, and the cooling pipe does not absorb moisture from the display room, so the display room does not dry out, allowing fresh food to be stored. Food can be properly preserved. Moreover, even if the operation of the refrigeration equipment is stopped, there are no cooling pipes in the display room, so frost will not fall from the cooling pipes, so even if the operation is stopped as desired, there will be no adverse effects. Therefore, it is possible to save electricity.

In addition, since the entire display room is cooled by circulating cold air between the inner and outer boxes of the display room, the temperature difference in the atmosphere within the display room is minimized, and no air currents are generated. It can prevent discoloration and drying of the surface of fresh foods. Furthermore, in a preferred embodiment, the outer windshield constituting the outer box is made of double glass, and the outer surface of the windshield is configured to be blown with warm air exhaust from the machine room, so that the front It can almost completely eliminate the phenomenon of glass fogging.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the refrigeration system according to the present invention as seen from the front side, and Fig. 2 is a perspective view of the refrigeration system as seen from the rear side. Device(
Blower fan) 16...Compressor 19...
・Condenser 20, 28, 29, 40...Cold air passage 21,
25, 35, 38...Insulating structure, side frame, top frame, outer windshield forming the outer box of the display room 23, 24, 36, 39...Bottom plate, side plate forming the inner box of the display room , top plate, inner windshield 27...horizontal sectional view of the insulation chamber cut in the longitudinal direction, FIGS. 5 and 6,
7 and 8 are cross-sectional views taken along lines 1-1, 1-2, 1-2, and 1-2 in FIG. 4, respectively. 1... Refrigeration device (neta case)

Claims (1)

[Claims] In a refrigeration system (1) comprising a machine room (3) containing a compressor (16), a condenser (19), etc., and a display room (2) for accommodating items to be displayed, the display room (2) ) are inner boxes (23, 24, 36, 39) and outer boxes (21, 25, 3).
5, 38), and a cold air passage (20, 28, 29, 40) is defined between the inner box and the outer box, and the machine room (3) is comprised of the cold air passage and A cooler room (27) surrounded by a heat insulating material (27) is provided inside the machine room so as to communicate with the machine room.
12), a cold air circulation device (14) and a cooler (15) are disposed in the cooler chamber (12), and configured to circulate cold air into the cold air passage and the cooler chamber. Refrigeration equipment characterized by: