JPH03263582A - Regulating device for amount of cold air blown-off from outlet of showcase - Google Patents

Abstract

PURPOSE:To permit the regulation of flow rate of cold air in a fluid circulating unit, circulating fluid discharged out of an outlet and circulated while cooling the inside of a case, partially by a method wherein the title device is equipped with plugs, blockading the outlets detachably. CONSTITUTION:One part of air, ventilated by a fan 15 and cooled by a cooling device 14, passes through an air passage 6 and is discharged downward out of an air discharging port, then, is sucked from a suction port 8 again and forms circulating flow to form an air curtain 16 while one part of the air is discharged forward through an outlet 13 and cools the inside of a case 1. In this case, when the temperature of a part of commodities on a rack 12 is deviated from the range of preserving temperature, outlets 17, formed on a rear part orthogonal to a bulkhead 5 respectively so as to satisfy the necessary regulating range of flow rate of cold air, discharged into the case 1 by changing the diameters thereof depending on the positions of the holes, are blockaded by fitting plugs 18 selectively in accordance with the flow rate of circulating flow, circulating through the inside of the case 1 after being discharged out of the outlets 17. According to this method, the flow rate of the circulating flow is regulated and the temperatures of all the commodities in the case 1 can be maintained in a range of preservation temperatures.

Description

[Detailed Description of the Invention] [Industrial Application Field] A cooling device cools the inside of the case, which has an open outer circumferential surface and products are displayed and stored inside, and the inside depth of the case is l! ! l
The present invention relates to a showcase @recirculation flow rate adjusting device that adjusts the flow rate of each part of the circulation flow of cold air blown out from a plurality of air outlets opened in a wall surface and circulated within the case.

[Conventional technology]

In a showcase equipped with a case with an open outer circumferential surface, in order to maintain the freshness of the sales products displayed and stored inside the case, a cooling device is used to cool the products inside the case. There is a cooling type that cools the inside of the case by forming a circulation flow of cold air that circulates while cooling the inside of the case.Some of these cooling type showcases cover the front opening of the case with an air curtain. There are so-called open showcases that are front-open showcases with a structure that thermally isolates the inside and outside of the case to prevent the temperature of products displayed and stored inside the case from rising and the cooling efficiency from decreasing. In a showcase with an open front, if the displayed product is fresh vegetables such as parsley or spinach, air is cooled by a cooling device and blown out from an outlet formed along the upper edge of the opening of the case. In other words, the wind speed of the air curtain formed by cold air is 1 m
/ If the cold air after s e clf blows directly onto the displayed products, the products will wither and lose their commercial value. In addition, fresh foods such as fruits and vegetables, including not only vegetables but also fruits, rapidly lose their freshness especially when the ambient temperature rises beyond the storage temperature range. Therefore, when displaying and storing fresh foods, especially fruits and vegetables, in a case, make sure that the cold air that forms the air curtain does not blow directly onto the displayed products. In order to maintain the freshness of the displayed products by indirectly and uniformly circulating cold air through the air surrounding the displayed products, it is necessary to adjust the flow rate of the W7 circulation flow control device for this type of showcase. One of the conventional examples is shown in Fig. 3 and Section 4. Fig. 3 is a left side vertical cross-sectional view showing the internal structure of a conventional showcase including a circulation flow rate adjustment device, and the side facing the figure is This is the front side, and Figure 4 shows the circulation flow rate adjustment device of No. 31M! FIG. 2 is an enlarged front view of a main part showing the configuration of FIG.

In FIG. 31g and FIG. A side plate 3 covers the case 1, and a large opening 4 is formed on the front side of the case 1.
Partition walls 5 having a C-shaped cross section are provided along the inner peripheral surface of the case body 2 at intervals. In the ventilation passage 6 defined by the space partitioned by the case 1 and the side plate 3, a discharge lower and a suction port 8 are formed along both upper and lower edges of the opening 4, with opening surfaces facing each other. A lid 9 having an L-shaped cross section is attached to the ceiling surface of the front end of the case body 2 forming the discharge lower, and the front and rear ends of the lid 9 are fixed by passing screws 11 through elongated holes 10 in the longitudinal direction. By loosening this screw 11, moving the lid 9 back and forth along the elongated hole 10, and tightening the screw, the position of the discharge lower can be adjusted. In addition, the rear end of the partition wall 5, which supports the rear end of the step-shaped product 8112 and forms the inner wall on the depth side of the case 1, has a large number of substantially vertical rear walls that open into the case 1 and communicate with the ventilation passage 6. Holes with approximately the same diameter are formed at approximately the same pitch, and these holes form the air outlet 13. In addition, inside the case 1, there is a cooling device 14 that cools the air on the lower performance side of the ventilation passage 6;
A blower 15 is provided for sucking and blowing air cooled by the cooling device 214 into the ventilation passage 6 from the suction port 8 . This blower! At step 115, the air that is blown and cooled by the cooling device [14] is partially blown out through the ventilation passage 6 and blown downward from the discharge lower, and then flows back into the suction port 8, if the lid 9 is closed and the discharge lower is not blocked. The air curtain 16 is formed as a circulating flow that is sucked in from the air outlet 1.
3 and cools the inside of the case 1. Furthermore, if the lid 9 is closed and the discharge lower is blocked, all the air sent by the blower 15 will be blown into the case 1 from the outlet 13. Therefore, the wind speed of the cold air blown from the discharge lower into the case 1 should be lowered to The product is adjusted so that it does not directly hit the products such as fruits and vegetables above 12, and the product is indirectly cooled through the air around the product, thereby maintaining the freshness of the product.

[Problem to be solved by the invention]

By the way, in such a circulating flow rate adjustment device for a showcase, the air outlets 13, which are formed at the substantially vertical rear part of the partition wall 5 and open into the case 1 and communicate with the ventilation passage 6, are arranged uniformly at a substantially constant pitch. Even if the heat load on each part of the shelf 12 changes due to a change in product type 1 display method 11, etc., the circulating flow of cold air blown out from the air outlet 13 by adjusting the degree of wi of the lid 9 can be maintained. It is possible to change the overall flow rate of this circulation flow, but it is not possible to partially adjust and change the flow rate of this circulating flow, so that the temperature of some of the products on layer 12 may be higher than the storage temperature range. It is difficult to keep all of the products on display 112 within the storage temperature range due to low temperature or low temperatures, and at least one of the products displayed and stored on the display 12, such as fresh foods, especially fruits and vegetables, is difficult to maintain. The freshness of the products in the section is 2
This invention provides a circulating flow flow rate adjustment device for a showcase that can partially adjust the flow rate of cool air at various parts of the air blowing case while cooling the inside of the air blowing case from the air outlet. The task is to do so.

c; Means for Solving am] In order to solve the above problems, the present invention includes a cooling device that cools the inside of a case whose outer peripheral surface is open and in which products are displayed and stored, and which is cooled by the cooling device. A circulation flow flow rate adjustment device for a showcase that adjusts the flow rate of a circulating flow of cold air blowing out from a plurality of air outlets formed on an inner wall on the performance side of the case and circulating while cooling the inside of the case, wherein the air outlet is It shall be equipped with a stopper that can be inserted and removed freely.

[Effect]

This invention is equipped with a stopper that is formed on the inside wall of the case on the entertainment side and removably closes the plurality of air outlets from which cold air is blown out. By selectively closing the outlet with a stopper according to the flow rate and changing the flow rate of cold air blown out from the outlet, the temperature of all products in the case can be maintained within the storage temperature range through partial adjustment. .

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2. The first section is vertical on the left side showing the internal structure of the showcase including the circulating flow flow 1 regulating device of the showcase according to the embodiment of this invention! In the li side view, the right side of the figure is the front side, $2
The figure is an enlarged front view of a main part showing the configuration of the circulation flow rate regulating device of FIG. 1. Components common or identical to those in FIGS. 3 and 4 are designated by the same reference numerals.

In Figures 1 and 2, 1 is a case with an open front, and this case 1 is covered with a case main body 2 having a C-shaped cross section and with openings on the front and both left and right sides, and its left '4Ei cocoon side opening. It consists of a side plate 3, and a large opening 4 is formed in the front surface thereof. In case 1,
A partition wall 5 having a C-shaped side cross section is provided along the inner peripheral surface of the case body 2 at m+i. In the ventilation passage 6 defined by the space partitioned by the case 1 and the side plate 3, a discharge lower and a suction port 8 are formed along both upper and lower edges of the opening 4, with opening surfaces facing each other. A lid 9 having an L-shaped cross section is provided on the front end ceiling surface of case book #-2 forming this discharge lower. A long hole 10 in the longitudinal direction is formed in the lid 9.
The opening of the discharge lower can be adjusted by loosening the screw 11, moving the lid 9 back and forth along the elongated hole 10, and tightening it again. In addition, the almost vertical rear part of the bulkhead 5 forming the box office-side inner wall of the case 1, on which the rear end of the step-shaped product is placed [12], is opened into the case 1 and has ventilation @ 6. A large number of holes communicating with each other are formed with diameters varying depending on their positions. Each of these holes forms an air outlet 17, and a plug 18 that fits into the air outlet 17 and removably closes the air outlet 17 is provided. It constitutes a flow rate adjustment device.

In addition, inside the case 1, there is a cooling device 14 that cools the air in the lower performance side of the ventilation path 6, and a blower 15 that sucks the air cooled by the cooling device 14 into the ventilation path 6 from the suction port 8 and blows the air. It is equipped with

In the configuration described above, the operation of the air blown by the air blower 8115 and cooled by the cooling device 14 is similar to that of the conventional example described above, but there is a case where the temperature of some products on the tank 12 is out of the storage temperature range. In this case, the air outlet 17 is formed at the almost vertical rear part of the partition wall 5, with a diameter varying depending on the position to match the required adjustment range of the flow rate of cold air blown into the case 1.
By selectively fitting and closing the stopper 18 according to the flow velocity of each part of the circulating flow circulating in the blowing case 1 from the blowing outlet 17, the flow rate of the circulating flow in each part in the case 1 is adjusted. The temperature of all products within 1 can be maintained within the storage temperature range.

〔Effect of the invention〕

According to this invention, since the stopper is provided to removably close the plurality of air outlets that are formed on the inner wall of the case on the normal side and blow out cold air, the circulation flow of the cold air that circulates while cooling the inside of the case is controlled. The temperature of the product inside the case can be maintained within the storage temperature range by partially adjusting the flow rate by selectively closing the outlet with a stopper and changing the flow rate of cold air blown out from the outlet. As a result, it is possible to maintain the freshness of fresh foods, especially fruits and vegetables, for a long time.

[Brief explanation of drawings]

WI, Figure 1 is a left vertical sectional view showing the internal structure of the showcase including the circulation flow rate adjustment device of the showcase according to the embodiment of the present invention, and Figure 2 shows the configuration of the circulation flow rate adjustment device of Figure 1. An enlarged front view of the main parts, Figure 3 is a left side vertical sectional view showing the internal S configuration of the showcase including the circulation flow rate adjustment device of a conventional showcase, and Section 4 is the configuration of the circulation flow rate adjustment device in Figure 3. FIG. 2 is an enlarged front view of main parts. DESCRIPTION OF SYMBOLS 1... Case, 2... Case body, 3... Side plate, 4... Opening, 5... Partition wall, 6... Ventilation path, 7...
...Discharge port, 8...Suction port, 9...Lid, 10...
・Long hole, 11...screw, 12...fence, 13.17・
...Air outlet, 14...Cooling device, 15...Blower,
16... Air curtain, 18... Plug body.

Claims (1)

[Claims] 1) A cooling device is provided for cooling the inside of a case with an open outer peripheral surface in which products are displayed and stored, and air is cooled by this cooling device and air is blown out from a plurality of air outlets formed on the inner wall on the depth side of the case. A circulating flow flow rate adjusting device for a showcase that adjusts the flow rate of each part of the circulating flow of cold air circulating while cooling the showcase, characterized in that the showcase is equipped with a stopper that detachably closes the outlet. Air outlet cold air blowout amount adjustment device.