JPH0542981U - Articulated case - Google Patents

Abstract

(57) [Summary] [Purpose] In a connected showcase in which a single showcase equipped with an evaporator and an expansion valve are connected in series with a common refrigeration cycle, workability during installation is improved and Improves showcase cooling capacity on average. [Structure] The showcase connecting body 15 is formed by connecting three showcase units 1 in series. First showcase unit 1a
The receiver 18 is incorporated in the second showcase unit 1b, the compressor 17 is incorporated in the third showcase unit 1c, and the accumulator 19 is incorporated in the third showcase unit 1c. The showcase connection body 15 is connected by a pipe to circulate and supply the refrigerant to each showcase unit 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connected showcase in which a plurality of showcases for refrigerating products such as foods are installed in a row in a store room.

[0002]

[Prior Art]

 The basic structure of a refrigeration system used for a refrigerated showcase consists of a refrigeration cycle in which a compressor, a condenser, a receiver, an expansion valve, an evaporator, an accumulator, etc. are connected by piping to circulate a refrigerant. Conventionally, when a plurality of showcases are arranged in series, as shown in FIG. 7, a basic showcase unit including most of the refrigeration cycle equipment such as a condenser 16, a compressor 17, a receiver 18, and an accumulator 19. One 101 is installed, and an additional showcase unit 102 having an evaporator 6 and an expansion valve 7 is connected to this, and a pipe 20 is connected from the basic showcase unit 101 to the additional showcase unit 102 to circulate and circulate the refrigerant. Was.

[0003]

[Problems to be solved by the device]

 However, in the conventional connection type, since the basic showcase unit 101 is extremely heavy, there is a problem in carrying it. Most of the equipment of the refrigeration cycle, such as the compressor 17, the receiver 18, the accumulator 19 or the condenser 16, is centrally built in the basic showcase unit 101, which limits the installation space and the size of each equipment. Was limited. As a result, the cooling capacity of the refrigeration cycle itself has been suppressed below a certain level. Furthermore, by concentrating each device in the basic showcase unit 101, the installation space of the unit itself is also restricted, and the built-in evaporator 6 becomes smaller than that of the additional showcase unit 102, so the cooling capacity is also increased. Even the ones that were inferior to the expansion showcase alone 102 had occurred.

Therefore, an object of the present invention is to obtain a connected showcase with improved work efficiency during installation. Another object of the present invention is to provide a connected showcase in which the cooling capacity of each individual showcase is improved on average.

[0005]

[Means for Solving the Problems]

 In view of this, in the connected showcase of the present invention, the refrigeration cycle equipment is distributed to a plurality of showcase units 1. Specifically, it has a showcase connecting body 15 in which the showcase single bodies 1 each having an evaporator 6 and an expansion valve 7 are individually connected, and the first showcase single body 1a is a liquid receiver 18 and a first showcase single body 1a. The second showcase unit 1b has a compressor 17 therein, the third showcase unit 1c has an accumulator 19 therein, and it is required that the condenser 16 is installed outside the showcase connecting body 15. The present invention has a showcase connecting body 15 in which a single showcase unit 1 having an evaporator 6 and an expansion valve 7 are individually arranged in series, and the first showcase unit 1a is a water-cooled condenser that also serves as a receiver. 25, the second showcase unit 1b has a compressor 17, and the third showcase unit 1c has an accumulator 19.

The present invention has a showcase connecting body 15 in which showcase units 1 each having an evaporator 6 and an expansion valve 7 are individually connected in series, and the first showcase unit 1 a is a receiver 18 , The second showcase unit 1b has a condenser 16, the third showcase unit 1c has a compressor 17, and the fourth showcase unit 1d has an accumulator 19. The present invention has a showcase connecting body 15 in which a single showcase unit 1 including an evaporator 6 and an expansion valve 7 is individually arranged in series, and the first showcase unit 1a is a compressor 17 and a second showcase unit 1a. It is required that the showcase unit 1b has a receiver 18 and an accumulator 19 built therein.

[0007]

[Action]

 The connected showcase is equipped with a condenser 16, a compressor 17, a receiver 18, an accumulator 19 and the like as a common refrigeration cycle, which is responsible for cooling each showcase unit 1, so that the temperature of the entire showcase is reduced. Centralized management is possible. Since the equipment for the refrigeration cycle is distributed to each showcase unit 1, the extremely heavy showcase unit 1 is eliminated. By distributing and installing the refrigeration cycle equipment to each showcase unit 1, a large installation space can be taken for each equipment.

[0008]

[Effect of the device]

 According to the present invention, the weight of each individual showcase forming the linked showcase does not deviate, and the work efficiency in transporting the showcase can be improved. Regarding the equipment of the refrigeration cycle, it is possible to increase the size of the equipment by expanding the installation space for each equipment, and to use equipment with high capacity. Therefore, the cooling capacity of the entire linked showcase is improved. In the case where the condenser is separately installed, the heat generated from the condenser is discharged to the outside or the outside, so that the temperature rise in the store room can be prevented even when the refrigeration system is enlarged. In addition, the capacity of the refrigeration system can be changed at low cost by replacing the condenser alone.

[0009]

【Example】

 First Embodiment FIGS. 1 to 3 show a first embodiment of a connection type showcase according to the present invention. FIG. 3 shows a single showcase 1, which has a display room 2 with a front opening at the upper half and a machine room 3 at the lower part.

A cold air circulation path 4 is formed so as to surround the lower part, the back part, and the upper part of the display room 2, and an evaporator 6 and a fan 8 are provided inside. The upper circulation path 4a is continuous with the air outlet 5 on the front side of the display room 2, and the lower circulation path 4b is continuous with the suction port 9 on the front side of the display room 2. Inside the display room 2, there is provided a shelf 10 on which products are placed. By the rotation of the fan 8, the air in the display chamber 2 is introduced into the lower circulation passage 4b through the suction port 9, and is cooled by the evaporator 6 while passing through the cool air circulation passage 4, and the upper circulation passage 4a is cooled. After that, it is blown into the display room 2 through the blow-out port 5. This cool air cools the inside of the display room 2 while forming an air curtain on the front surface of the opening of the display room 2, and is sucked into the suction port 9 again and circulated.

As shown in FIG. 1, the connection-type showcase of the present embodiment is one in which a showcase connection body 15 formed by connecting three such showcase units 1a, 1b, and 1c is installed in a store room. Is. The evaporator 6 and the expansion valve 7 provided in each showcase unit 1 are standardized to the same standard. The showcase connecting body 15 as a whole includes a compressor 17, a receiver 18, and an accumulator 19, and the condenser 16 is separately installed outside the showcase connecting body 15. These devices are connected by a pipe 20 to form a refrigeration cycle in which a refrigerant circulates.

The equipment constituting this refrigeration cycle includes, for example, the liquid receiver 18 as the first showcase unit 1a, the compressor 17 as the second showcase unit 1b, and the accumulator 19 as the third showcase unit 1c. It is distributed to each showcase 1 and installed. Each device is housed in the machine room 3 of each showcase 1a, 1b, 1c.

A control box 21 is installed in the first showcase unit 1a, and this controls the entire connection-type showcase. In addition, although not shown, a strainer, a dryer, a ballast for internal lighting, and other devices are installed in the third showcase unit 1c. As a result, the weights of the individual showcases 1a, 1b, and 1c become substantially even, and when the showcases are transported, there is no excessively heavy weight, and the workability can be improved. Since the installation space for each device is expanded, workability during maintenance is also improved.

The pipes 20 between the individual showcases 1a, 1b, 1c and between the showcase connecting body 15 and the condenser 16 are connected via a connecting member 22 for circulating and supplying the refrigerant. .. The pressure of the refrigerant flowing through the inside of the series of pipes from the expansion valve 7 to the compressor 17 to the compressor 17 is low, and from the compressor 17 to the expansion valve 7 via the condenser 16 and the receiver 18. The pressure of the internal refrigerant is high in the pipe part.

When the pressure loss of the refrigerant in the refrigeration cycle occurs in the low-pressure side pipe portion rather than in the high-pressure side pipe portion, the performance of the cooling device is deteriorated and appears sharply. .. Therefore, as the connection member 22 of the low-pressure side pipe portion, a material having a small pressure loss such as a flange or a coupling using a shape memory alloy is used to prevent an unnecessary decrease in the cooling capacity.

The coupling using a shape memory alloy is one in which a liner 24 made of a flexible material is inserted inside a cylindrical outer cylindrical body 23 made of a shape memory alloy as shown in FIG. The pipes 20 and 20 to be connected are inserted into the liner 24 from both ends in a butt-like manner, and then the pipes 20 and 20 are kept airtight by being heated to a predetermined temperature from the outside of the main body outer tubular body 23 to shrink and deform. Can be linked together.

The condenser 16 is separately installed outside the showcase connecting body 15 and installed outdoors, and connects the compressor 17 and the receiver 18 on the showcase connecting body 15 side with a connecting member. It is connected by a pipe 20 via 22. In the case where the condenser 16 is built in the showcase coupling body 15, the heat dissipation from the condenser 16 may cause an increase in the room temperature, which may lower the showcase cooling efficiency. Such a situation can be prevented by disposing the condenser 16 separately as an outdoor unit, and the efficiency of cooling the showcase can be further enhanced.

Further, by separately placing the condenser 16 separately, the pipe 20 can be separated from or connected to the case joint body 15 via the connecting member 22, so that a store that uses a showcase is required. Accordingly, it is possible to select and change the type and capacity of the condenser 16 such as water-cooled type or air-cooled type easily and inexpensively before and after installation. In the installation work of the condenser 16 and the replacement work after the installation once, it is only necessary to attach / detach via the connecting member 22, so that the workability could be extremely improved.

Second Embodiment FIG. 4 is a conceptual diagram showing the relationship between the showcase unit 1 and a built-in device according to a second embodiment of the connection type showcase according to the present invention. Here, a shell-and-tube type liquid receiver / water-cooled condenser 25 in which a condenser and a liquid receiver are integrated is used, and this is to be built in the first showcase unit 1a. did. In this case, since the condenser 16 is not separately placed, the pipe 20 and work for connecting the condenser with the showcase coupling body 15 are unnecessary.

However, a water pipe for supplying and discharging the cooling water from the outside of the showcase coupling body 15 to the liquid receiver / water cooling condenser 25 is necessary. However, in the case of the water pipe, a general connecting member 22 can be used as compared with the pipe 20 for the refrigerant, which is cheap in terms of material cost, work cost of piping work, and the like. In addition, since the exhaust heat from the condenser is removed by the cooling water, the cooling efficiency of the showcase does not decrease.

Third Embodiment FIG. 5 shows a third embodiment of the connection type showcase according to the present invention. Here, in the showcase coupling body 15, the first showcase unit 1a has a receiver 18, the second showcase unit 1b has a condenser 16, the third showcase unit 1c has a compressor 17, and the fourth show unit. The accumulator 19 is incorporated in the case unit 1d.

Fourth Embodiment FIG. 6 shows a fourth embodiment of the connection type showcase according to the present invention. In the showcase coupling body 15, a compressor 17 is incorporated in the first showcase unit 1a, and a liquid receiver 18 and an accumulator 19 are incorporated in the second showcase unit 1b. Here, the condenser 16 is separately installed outside the showcase coupling body 15, but the present invention is not limited to this, and may be installed inside any one of the showcase single bodies 1, or in place of this. It is also possible to use the water-cooled condenser 25 that also serves as a receiver.

In each of the above-described embodiments, the showcase unit 1 that does not include a refrigeration cycle device can be arbitrarily added as the showcase unit 1 that constitutes the showcase assembly 15. In that case, the control box 21, strainer, dryer, ballast for interior lighting, etc. can be distributed to the added showcase unit 1.

As a means for electrically connecting the individual showcases 1 for power lines, signal lines, etc., a connector or a terminal block may be used, or a conductive wire or conductive plate made of metal such as a copper plate may be used. You can also connect directly.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a distribution state of cooling devices.

FIG. 2 is a vertical side view of a connecting member.

FIG. 3 is a vertical side view of a single showcase.

FIG. 4 is a conceptual diagram showing a distribution state of a cooling device according to a second embodiment.

FIG. 5 is a conceptual diagram showing a distribution state of a cooling device of a third embodiment.

FIG. 6 is a conceptual diagram showing a distribution state of a cooling device according to a fourth embodiment.

FIG. 7 is an explanatory diagram showing a distribution state of a conventional cooling device.

[Explanation of symbols]

 1 Showcase alone 15 Showcase connecting body 16 Condenser 17 Compressor 18 Liquid receiver 19 Accumulator

Claims (4)

[Scope of utility model registration request] 1. A showcase connecting body (15) formed by connecting three showcase units (1) each having an evaporator (6) and an expansion valve (7), and the first showcase unit (1a) is a liquid receiver. 18, the second showcase unit 1b has a compressor 17 therein, the third showcase unit 1c has an accumulator 19 therein, and a condenser 16 is installed outside the showcase connector 15. Type showcase. 2. A showcase connecting body (15) in which three showcase units (1) each having an evaporator (6) and an expansion valve (7) are connected in series, and the first showcase unit (1a) is a liquid receiver. Combined water cooling condenser 2
5, the second showcase unit 1b has a compressor 17 therein, and the third showcase unit 1c has an accumulator 19 therein. 3. A showcase connecting body (15) formed by connecting four showcase single bodies (1) each having an evaporator (6) and an expansion valve (7), wherein the first showcase single body (1a) is a liquid receiver. 18, the second showcase unit 1b is the condenser 16, the third showcase unit 1c is the compressor 17, and the fourth showcase unit 1 is
Connected showcases in which d respectively include accumulators 19. 4. A showcase connecting body (15) formed by connecting two showcase units (1) each having an evaporator (6) and an expansion valve (7), wherein the first showcase unit (1a) is a compressor (17). The second showcase unit 1b is a connected showcase in which the liquid receiver 18 and the accumulator 19 are incorporated.