CN1087159C - Rear-carried refrigerating showcase - Google Patents

Abstract

The invention provides a type of rear load freezing show case reduce thermal load applied on a refrigeration warehouse following a combination of freezing show cases, and hence prevent stored goods from being damaged for the freezing show case installed on the side of a shop counter parallely with the opening in the refrigeration warehouse so as to directly carry a goods exhibition cast from the goods keeping refrigeration warehouse. A case body 5 includes a ceiling part 6 where there are assembled as condenser 10 and a fan 11 in a ventilation duct with its rear end surface opened toward the refrigeration warehouse, a front part 16 located on lower part of the front surface incorporating a fan 15, and a drawer door back surface door 17 for carrying in the curt. Further, a cold air circulation duct 19 is provided on the back surface door, and part of a cold air stream is circulated to the refrigeration warehouse, and further remaining cold air is circulated in the show case after passage through the duct.

Description

Back Loading Refrigerated Display Cases

The present invention relates to a rear load type refrigerated display cabinet installed in large stores such as supermarkets for displaying and selling refrigerated commodities.

Utility Model Patent Gazette, Public Proclamation No. 51-30215 etc. discloses a kind of refrigerated display cabinet equipment arranged at the sales office of the store. In order to replenish the products easily and quickly, there is a refrigerator in the store for storing the products, which is connected to the refrigerated display cabinet at the sales office in the store, so that it constitutes a trolley for displaying the products through the opening of the refrigerator. Move directly into the display case from the back (rear loading type) refrigerated display case.

This kind of refrigerated display cabinet equipment makes a part of the cold air flowing from the refrigerator to be taken by the main body of the refrigerated display cabinet. After the cold air flow of the air curtain is recovered by the front end, it flows back to the refrigerator through the bottom side of the display cabinet for circulating air supply, so as to cool the shops that are being displayed on the trolley. Moreover, this refrigerated showcase equipment can make it possible to put the goods on the trolley in the refrigerated store, and then directly move them from the refrigerated store into the cabinet of the refrigerated showcase for display and sales without going through the passage of the sales office of the store.

Although refrigerated display cabinets with refrigerated specifications (using temperature about 2-7°C) for exhibition and sales of dairy products, lean meat, and fresh fish are used in combination with refrigerators, the refrigerators receive less heat, but when used for exhibition and sale freezing In the case of a refrigerated display case for food and other refrigerated products (used at temperatures below -18°C), the thermal influence on the refrigerator will be large, and there will be problems in terms of cold storage performance as described below.

The temperature in the refrigerator for storing frozen food is maintained at about -25°C. On the other hand, as mentioned above, the cold air flowing in from the refrigerator is formed into an air curtain that is blown out to the front of the cabinet, and then recovered at the front end. In the method of returning the entire air volume of the air curtain air conditioner to the refrigerator, the air curtain is used as a medium to draw in the surrounding high-temperature and humid air, and the entire air volume of the recycled air containing moisture that raises the temperature to about -5°C is returned. into the freezer. Moreover, the air volume of the cold air flow circulated and ventilated between the refrigerator and the display cabinet is quite large, thus increasing the heat load of the refrigerator. As a result, since the refrigerating capacity of the cooler assembly installed in the refrigerator does not have a sufficient margin, the temperature in the refrigerator rises, and the frozen food stored in the refrigerator becomes a thawed state. There is a problem that a large amount of frost adheres to the package and the food is greatly damaged.

Moreover, when considering that the store will stop operating the display cabinets when encountering holidays, nights, etc., it is necessary to set a cooler with a larger cooling capacity in the refrigerator than the refrigeration capacity required for the cold storage of the refrigerator itself. It is also disadvantageous economically.

The present invention is made to solve the above-mentioned problems in the prior art. Its purpose is to provide a rear-type freezer display case, which is configured to solve the above-mentioned problems, and can reduce the heat load brought to the refrigerator by combining with the freezer display case, thereby avoiding damage to stored goods.

In order to achieve the above object, the present invention provides a back-loading refrigerated showcase, which is connected to the opening of a refrigerator for storing commodities, and commodities can be directly moved into the back-loading refrigerated showcase from the refrigerator. The display cabinet is equipped with an air supply device, which is used to obtain cold air from the refrigerator and blow it to the front of the cabinet body to form a cold air curtain, wherein: it is equipped with a device to recover the cold air in the air curtain and make part of it flow back to the refrigerator 1. A cold air circulation device that circulates the remaining part in the commodity display cabinet.

Specifically, the refrigerated showcase equipped with the above-mentioned cold air circulation air supply duct device is provided with: a top, which is assembled from a ventilation duct with the rear end facing the opening of the refrigerator, a cooler and a fan inside it; There is a fan for sucking the air curtain inside, and it is at the front end of the lower front of the cabinet; the sliding door type rear door of the trolley used for displaying goods is installed, and there is also a ventilation duct that overlaps with the rear door and communicates between the bottom side of the cabinet and the above-mentioned top. cold air circulation pipes.

Corresponding to the above-mentioned cold air circulation method, the top of the cabinet body can also be configured as follows.

(1) There is a ventilation chamber for sucking in cold air, and the ventilation chamber for sucking in cold air is arranged in the top of the cabinet body, at the rear of the spaced ventilation ducts, and arranged longitudinally along the cabinet with multiple fans; The configuration is correspondingly separated alternately: the first cold air intake opening on the back of the refrigerator facing the back and the second cold air intake opening on the lower side of the ventilation duct facing the rear door.

(2) The spaced ventilation ducts in the top of the cabinet body are separated into inner air curtain blowing ducts equipped with coolers and middle air curtain blowing ducts not equipped with coolers; The fan forms the air curtain duct that flows in from the surroundings of the store to the front of the cabinet body.

According to the above-mentioned structure, after the cold air curtain blown to the front of the cabinet body is recovered at the front end, part of the cold air flow passes through the bottom of the rear opening from the bottom side and returns to the refrigerator, so that the remaining cold air flows through the sliding door type rear door. It passes through and rises through the circulation pipe attached to the top, and after being sucked from the upper end of the pipe into the top ventilation cavity for sucking in cold air, it merges with the cold air flowing in from the side of the refrigerator, and then forms an inner air curtain blown out to the front of the cabinet body and The air curtain in the middle circulates the air in the display cabinet. Because in this case, the above-mentioned cold air circulation duct and the rear door are overlapped, there is no influence on the work of entering and exiting when the display case is transported between the cabinet and the refrigerator after the rear door is opened. And because the outer air curtain blown out to the outside of the middle air curtain by being cooled by the cooler is formed in front of the cabinet, thereby it can prevent high temperature, humid ambient air from being drawn into the inner air curtain and the middle air curtain.

In this way, it is enough to use a small amount of cold air flow from the refrigerator through the commodity display cabinet and then return to the refrigerator, so the increase in the heat load of the refrigerator can be reduced, and the amount of moisture intruding into the refrigerator can be reduced. Therefore, the capacity of the cooler assembly installed in the refrigerator should be slightly larger than the freezing capacity of the refrigeration load of the refrigerator itself, which can better avoid damage to the products stored in the refrigerator ( That is, product temperature rise, frost, etc.).

Moreover, in the top of the cabinet body, at the rear end of the divided ventilation duct, the ventilation cavity for sucking cold air provided in combination with the fan has the function of allowing the cold air flowing in from the side of the refrigerator and the cold air passing through the rear door. It is a function that the circulating cold air flowing from the circulation duct is sucked in at a predetermined air volume ratio and mixed at the downstream side of the fan.

Hereinafter, embodiments of the present invention will be described with reference to accompanying drawings 1-4.

Fig. 1 is a longitudinal sectional view showing the structure of a rear loading type refrigerated merchandise showcase according to an embodiment of the present invention,

Figure 2 is a cross-sectional view of the refrigerated display case shown in Figure 1,

Fig. 3 is a perspective view showing the appearance of the back door with the cold air circulation duct in the refrigerated showcase shown in Fig. 1,

Fig. 4 shows the structure of the ventilation chamber for sucking cold air in the refrigerated merchandise showcase shown in Fig. 1; Fig. 4a is a schematic side sectional view; Fig. 4b is a perspective view of the overall appearance seen from the rear side.

In Fig. 1, Fig. 2, 1 is to be located at the refrigerator that stores the merchandise used in the interior of the store, and in the sales place 2 of the store, is communicated with the opening 1a of the refrigerator 1 and is provided with the trolley 3 that can directly put the merchandise on display. The back loading type refrigerated showcase 4 (that is, the open-shelf merchandise showcase) constituted in the interior of the cabinet is transported from the refrigerator 1 .

Wherein, the cabinet body 5 of the refrigerated display cabinet 4 is made as a vertical heat-insulating casing that can open the front, the back and the bottom surface, and is equipped with heat-insulating walls on the left and right, the top, and the lower part of the front, and is divided into air curtains in the top 6. The inner pipeline 7 that outlet opens towards the cabinet front, the middle pipeline 8 and the outer pipeline 9 on the upper side. And inner cooler 10 is set in inner duct 7, and the ventilation cavity 12 (detailed structure will be described below) that is provided with the suction cold air of a plurality of fans 11 is housed in the rear end portion of top 6. In addition, an external fan 13 and an external cooler 14 are installed in the external duct 9 .

On the other hand, a front end 16 is provided at the front lower part of the cabinet body 5, and the fan 15 for air curtain suction is housed inside it, and the front end 16 of the air curtain suction inlet is set on its upper end face; 5, the back door 17 of sliding door type is installed by the track 18 of hanging, on the cabinet inner side surface of this back door 17, overlaps with each fan door, is integrally provided with the cooling circulation pipeline 19 that upper and lower end faces all open . And in Fig. 2, 20 is the frame that is arranged on the left and right, and 21 is the central frame that is arranged in the middle of frame 20, by these frames 20,21, top 6, front end 16 are connected mutually, constitute vertical Cabinet body 5. Although it is not shown in the figure, it is fully possible to arrange multiple layers up and down between the above-mentioned frames 20 and 21, and install them into a multi-layer commodity display rack.

Fig. 3 is a perspective view showing the appearance of the assembly structure of the above-mentioned rear door 17, the bottom of the door panel is provided with a partition 22 with a plurality of cold air ventilation holes 22a between the bottom surface.

(a) of Fig. 4, (b) are the structural diagrams that represent the ventilation chamber 12 of above-mentioned sucking cold air, and it is that the cross section of the rear and lower openings is the inclined surface of a triangular frame, and a plurality of fans 11 are arranged vertically along it, And they are separated from each other with a partition, and at the same time, a cover plate 23 is covered at every interval in the back and below, so that they are alternately formed with the back suction port 24 (the first cold air suction port) and the suction port below. 25 (the second cold air intake). Wherein, the rear suction port 24 opens toward the refrigerator 1 in FIG.

With the above-mentioned structure, the refrigerator 1 and the refrigerated showcase 4 are kept cold, and the trolley 3 for the merchandise on display is transported from the refrigerator 1 to a certain position in the cabinet of the refrigerated showcase 4, and after the rear door 17 is closed, In front of the cabinet body 5, the inner and outer three-layer inner air curtain A, the middle air curtain B and the outer air curtain C that are blown out between the air curtain outlet of the top 6 and the suction port of the front end 16 are formed; cut off by these air curtains External hot air intrudes into the cabinet of the commodity display case from the surroundings to keep the frozen commodities displayed on the trolley 3 cold.

With the above-mentioned structure, the cold air flow D obtained from the interior of the refrigerator 1 and the air flow E circulated in the commodity display cabinet through the cold air circulation duct 19 are sucked into the ventilation chamber 12 of the top 6 with a certain air volume ratio. Afterwards, carry out merging at its downstream side, then be divided into two branches and shunt in the inner pipeline 7, the middle pipeline 8, form the inner air curtain A and the middle air curtain B blown out to the front of the cabinet. The cool air flowing through the inner duct 7 is cooled by the inner cooler 10 to the same degree as the temperature inside the refrigerator 1 . And the outside air that flows into the outer duct 9 from around the commodity display case 4 is cooled to a low temperature by the outer cooler 14 to form an outer air curtain C, and blow out to the outside in front of the cabinet, to the inner air curtain and the middle air curtain A, B for protection. Then, the cold air flow of the inner air curtain A and the middle air curtain B recovered at the front end 16 is blown by the fan 15 and flows to the rear along the bottom surface of the bottom side in the cabinet. At the rear end of the cabinet, a part of the cold air constitutes The return cold air flow F passes through the lower side of the rear door 17 and flows back into the refrigerator 1, and the remaining cold air flows into the circulation pipe 19 arranged on the rear door 17 to form the above-mentioned circulating cold air flow E, and is sucked into the top 6 again. The ventilation chamber 12 of sucking cold air circulates air supply in the showcase.

If numerical values are used to represent the temperature of the cold air flowing in the above-mentioned parts, the temperature inside the refrigerator 1 and the blowing temperature of the inner air curtain A are -25°C; the blowing temperature of the middle air curtain B is -15°C; If the ambient temperature is 25°C, the blowing temperature of the outer curtain C is 15°C, and the temperature of the cool air sucked in from the front end portion 16 is 5°C. Under this condition, the temperature in the cabinet of the frozen product display case 4 is kept below -18° C., and the frozen products displayed on the trolley 3 are kept cold in a frozen state.

As mentioned above, the rear-loading refrigerated showcase of the present invention is to return the cold air flow that is blown to the front of the cabinet body to form the air curtain at the front end, and then return a part of it to the refrigerator, so that the remaining cold air can be circulated. The ventilation duct circulates the ventilation in the display cabinet. Compared with the previous method of making all the air flowing through the display cabinet flow in from one side of the refrigerator and make it all return to the refrigerator, it can not only reduce the cooling effect caused by the combination with the display cabinet. The thermal load of the storage is increased, and the moisture brought into the refrigerator due to the air curtain of the showcase can be reduced. Like this, the refrigerating capacity of the cooler assembly that is arranged in the freezer only needs a little more than the ability of the freezing load of balance refrigerator itself just enough; There is less air with high humidity, thereby reducing the concern of damage to frozen food stored in the freezer.

Also as described in claim 2 of the present application, since the above-mentioned circulating ventilation pipeline is formed by the pipeline arranged on the back door of the showcase, there is no obstacle to the moving in and out of the trolley used for commodity exhibition. . And because the ventilating cavity for sucking cold air described in claim 3 of the present application is set at the rear end of the ventilation duct spaced apart on the top of the cabinet body, the cold air obtained from the refrigerator can be combined with the above-mentioned circulation on the above-mentioned rear door. The circulating cold air from the pipes is combined in the ventilation pipe according to the specified air volume ratio, so that the cold air curtain can be blown out to the front of the cabinet with an average temperature distribution to form.

In addition, because the present invention adopts the structure as claimed in claim 4, that is, the top of the cabinet body is provided with an outer pipe with a cooler inside, and forms a low-temperature outer air curtain blown to the front of the cabinet, thereby further improving the prevention of The heat insulation performance of the air curtain when the outside hot air invades the cabinet.

Claims (5)

1, a kind of rear-carried refrigerating showcase, it links to each other with the opening that is used as the freezer of depositing commodity, commodity can directly be moved into from freezer in this rear-carried refrigerating showcase, this showcase is provided with air-supply arrangement, be used for obtaining cold air from freezer, front to the cupboard body blows out, and to form the cold air air curtain, it is characterized in that: it is provided with the apparatus for cold air circulation that makes its part flow back into freezer, its remainder is circulated after the recovery of the cold air in the air curtain in goods showing cabinet.

2, rear-carried refrigerating showcase as claimed in claim 1 is characterized in that: this showcase has and can move into the go-cart that the merchandise display of this showcase is used by freezer through the opening of freezer.

3, refrigerated display case as claimed in claim 1 or 2 is characterized in that: be provided with in the cupboard body: a top, it by rear end face to the ventilation shaft (7,8) of freezer opening and be located at its inner cooler (10), fan (11) assembles; The inside adorning the fan that sucks air curtain and use, at the leading section of cupboard front lower; Sliding door type back door, and the gas circulating line that is communicated with the ventilation shaft at above-mentioned top with the overlapping bottom surface side in back door at cupboard.

4, rear-carried refrigerating showcase as claimed in claim 3, it is characterized in that: it is provided with the vented cavity (12) that sucks cold air, this vented cavity is located in the top of cupboard body, at the rear portion of isolated ventilation shaft, and the direction along the length of cupboard in this vented cavity is arranged with many desk fans (11); And alternately separate accordingly with the configuration of said fans and to be provided with first cold air sucting inlet (24) and second cold air sucting inlet (25), this first cold air sucting inlet is towards freezer behind, opening backward, this second cold air sucting inlet is towards the ventilation duct at back door, Open Side Down.

5, the freezing goods showing cabinet of back load mode as claimed in claim 3 is characterized in that: isolated ventilation shaft in the described cupboard bodies top is separated into the middle air curtain that the interior air curtain that cooler (10) is housed blows out pipeline (7) and do not adorn cooler blows out pipeline (8); And the upper face side at the top is provided with inside cooler (14), fan (13) is housed, the pipeline (9) of the outer air curtain that leaked-in air around in the shop is blown out previously to the cupboard body.

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