JP3730463B2 - refrigerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention has a structure in which refrigeration equipment including a compressor, an air-cooled condenser, and a liquid receiver is housed in an integrated housing, and is generally an outdoor installation type (including a machine room installation type) called an air-cooling condensing unit. It relates to a refrigerator.
[0002]
[Prior art]
A typical prior art relating to an outdoor installation type refrigerator is disclosed in Japanese Patent Application Laid-Open No. 8-152201. The internal structure is as shown in the structural diagram of FIG.
[0003]
Referring to FIG. 5, this refrigerator is an air-cooling condensing unit, in which a compressor 30, a receiver 32, an accumulator 33 and other refrigeration equipment and an electric control box 35 are housed in a lower part of a housing 36. In addition, the condensers 31, 31 and the blower 34 are housed in the upper part.
[0004]
The condensing unit includes a pair of condensers 31 and 31 arranged side by side in a V shape, and high-temperature and high-pressure gas refrigerant discharged from the compressor 30 passes through the gas pipe 37 to the condensers 31 and 31. It is liquefied after entering and cooled by the flowing air by the blower 34 and flows into the lower liquid receiver 32 through the liquid pipe 38. By the way, if the capacity (capacity) of the compressor is to be increased and the capacity as a refrigerator is to be increased, a condenser having a condensing capacity corresponding to that is naturally required, and the height H ( 5), it is necessary to increase the length in the longitudinal direction, that is, in the width direction of the condenser and in the front-rear direction perpendicular to the paper surface in FIG. However, increasing the “height H” is limited due to maintenance of the top blower 34, transportation problems, and the like, and there is a similar problem with increasing the “longitudinal” dimension.
[0005]
As a conventional example that can overcome the above problems, there is a prior art having a structure described in JP-A-11-108534. This example is as shown in a perspective view in FIG. 6 and is characterized by a configuration in which two condensers 31 and 31 are arranged in a plurality of rows so as to face one set of V-shapes. With this structure, even if the flat area increases, the height H will not change, and even if it leads to an increase in the volume of the entire refrigerator and the entire condensing unit, it will have a significant impact on maintenance and transportation. Therefore, the above problem can be solved to some extent.
[0006]
[Problems to be solved by the invention]
However, in the case of such a configuration, in particular, in addition to the configuration shown in FIG. 6, the side surfaces perpendicular to the longitudinal direction (the front and back surfaces in FIG. 6) do not have openings such as openings for introducing air. In the case of a configuration constituted by a plate member or the like, the condenser provided in the inner portion which is the middle row in the middle of the plurality of rows is exchanged by heat exchange via the condenser provided in the outer portion. The rate at which the heated air is used for heat exchange of the condenser in the inner part becomes high, and the original condenser capacity is not fully utilized as a whole for the condenser. There is a problem that it is forced to operate in a state lower than the heat exchanging capacity of the condenser at.
[0007]
The present invention has been made to solve such a problem, and the object of the present invention is to increase the volume of the condensing unit exceptionally, and thus to increase the volume of the entire refrigerator. To provide a refrigerator that can sufficiently cope with an increase in the capacity (capacity) of the compressor without being brought about and can maintain the maximum condensing capacity while reducing the size of the structure.
[0008]
[Means for Solving the Problems]
The present invention has the following configuration in order to achieve the above object. That is, according to the first aspect of the present invention, at least a compressor, a plurality of air-cooled condensers arranged in a row, and a refrigeration apparatus including a liquid receiver are housed in an integrated housing, and the inside of the housing is In a refrigerator that is divided into two upper and lower chambers by a partition wall and is housed in an upper chamber of a housing in which a plurality of the air-cooled condensers are partitioned, a lower bottom portion of the plurality of air-cooled condensers And a space between the upper wall and the lower wall , which are separated from each other by the partition wall. Refrigerant pipes for connecting the refrigeration equipments respectively housed in the chambers pass through the upper part and the lower part of the side wall of the housing across the partition wall, and bypass the partition wall outside the side wall. refrigerator, characterized by comprising a pipe extending vertically A.
[0009]
[0010]
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0012]
In FIG. 1, the outline of the structure of the refrigerator according to the first embodiment of the present invention is schematically shown in a side view in (a) and in a front view in (b). 2 shows a refrigeration circuit according to the refrigerator shown in FIG.
[0013]
Referring to FIGS. 1 and 2, the illustrated refrigerator 1 is an outdoor installation type package type refrigeration apparatus called an air-cooling condensing unit, and is included in a case 12 that forms a monolithic structure. , Compressor 2, oil separator 8, air-cooled condenser (hereinafter referred to as condenser) 3 </ b> A to 3 </ b> F, liquid receiver 4, accumulator 7 refrigeration equipment and blowers 9 </ b> A to 9 </ b> C are housed, and electric control (not shown) Boxes are also stored. And the refrigeration equipment of compressor 2, oil separator 8, condensers 3A-3F, receiver 4 and accumulator 7, and the refrigeration equipment of expansion valve 5 and evaporator 6 provided on the indoor side separately from them As shown in FIG. 3, the refrigerant pipes 18 to 24 are connected to the cycle to form a refrigeration circuit. An oil return line including an oil cooler 19 and a filter 11 is piped between the oil take-out port of the oil separator 8 and the oil return port of the compressor 2.
[0014]
The casing 12 has an internal space divided into two upper and lower chambers, an upper chamber and a lower chamber, by a partition wall 13 provided in the middle in the vertical direction. A plurality of, for example, six condensers 3A are provided in the upper chamber. ˜3F is set up in a set of 2 groups facing each other in a V shape, and is arranged in a plurality of rows, for example, 3 rows in a horizontal direction, while the lower chamber includes a compressor 2 and an oil separator 8. The refrigeration equipment such as the liquid receiver 4 and the accumulator 7 and the electric control box are accommodated. The top plate of the housing 12 has nine air outlets 17 that are V-shaped and are opened in an array of 3 rows and 3 columns and open to the upper chamber. 9I is arranged, and the front plate and the back plate are opened to the intake port 16 through the upper chamber so as to be desired in the front front portion of the condenser 3A and the rear front portion of the condenser 3F. When the air blowers 9A to 9I are driven, the air sucked from the intake port 16 flows from the inclined side surfaces of the condensers 3A to 3F arranged in a V shape and cools the condensers. The air is blown upward from each air outlet 17, and heat exchange is performed between the refrigerant and the air.
[0015]
In the refrigerator 1, the upper chamber divided by the partition wall 13 is formed in the condenser chamber, and a front plate is provided between the bottoms of the six condensers 3 </ b> A to 3 </ b> F and the partition wall 13. And the space | gap part 14 connected to both the inlet ports 16 provided in the backplate is formed. This gap 14 communicates with the space between the condensers 3B and 3C and the condensers 3D and 3E that face each other in the inner part among the adjacent V-shaped condensers 3A to 3F. It is provided to do.
[0016]
When the air blowers 9A to 9I are driven by providing the air gap part 14 in this way, the air sucked from both the suction ports 16 flows from the inclined side surfaces of the condensers 3A and 3F, and at the same time, the air gap part 14 Through the space between the condensers 3B and 3C and between the condensers 3D and 3E also flows from the inclined side surfaces of the condensers 3B to 3E. The condensers 3A to 3F are directly taken in through the section 14 with substantially the same air volume and speed regardless of the outer part and the inner part, and therefore all the condensers 3A to 3F are effectively utilized. Thus, it is possible to obtain an air-cooled condensing unit with good heat exchange efficiency.
[0017]
In the refrigerator 1 according to the first embodiment described above, the partition wall 13 is formed of a single plate-like member and is inclined. That is, the partition wall 13 is formed by arranging a single flat plate inclined downward toward one side portion of the front and rear and left and right side walls of the housing 12, for example, toward the front side wall portion. Is done.
[0018]
In this way, rainwater or the like that has entered by dropping into the upper chamber can be guided to the lower end of the slope, and rainwater or the like is not accumulated in the partition wall 13 by the drainage means provided at the lower end. Therefore, it is possible to keep the upper chamber always dry. Although not shown in the drawings, a ridge or the like may be provided on the edge of the inclined lower end portion of the partition wall 13 to drain rainwater or the like from the ridge. Moreover, the form formed by providing the opening part of a horizontally long slit shape in the outer wall of the location where the partition 13 and a side wall cross | intersect so that it can drain only with respect to the exterior may be sufficient.
[0019]
Further, an air supply duct 15 is disposed in a gap portion 14 formed between the lower bottom portions of the plurality of condensers 3 </ b> A to 3 </ b> F and the partition wall 13 in the upper chamber of the refrigerator 1. The air supply duct 15 is provided to allow the outside air introduced into the gap portion 14 from the intake port 16 to be conducted downward to the condenser of the inner portion of the condensers 3A to 3F, for example, the condensers 3C and 3D. In this embodiment, the partition wall 13 is a bottom plate portion, the left and right side wall portions facing the gap portion 14 of the housing 12 are left and right plate portions, and the condensers 3A to 3F A partition plate 26 horizontally provided at a position directly below the bottom portion is used as a top plate portion, and a part of both the intake ports 16 is formed as a duct.
[0020]
The partition plate 26 includes a horizontal plate portion horizontally disposed immediately below the bottoms of the condensers 3A and 3B and the condensers 3E and 3F, which are outside portions of the condensers 3A to 3F, and the horizontal plate portion. It is composed of upright plate portions that are bent from the inner edge of each of them and are raised by a small size, and an air supply port 27 is provided at the lower bottom of the condensers 3C and 3D in the inner portion.
[0021]
By providing the air supply duct 15 in the gap portion 14, the heat exchange efficiency in the condensers 3C and 3D in the inner portion is improved. That is, if only the air gap portion 14 having no air supply duct is used, the condensers 3C and 3D in the inner part are once warmed by the condensers 3A and 3B and the condensers 3E and 3F in the outer part. The rate at which air is used for heat exchange for condensation increases, leading to a decrease in cooling efficiency. On the other hand, when there is an air supply duct 15, outside air is directly passed through the duct 15 (in other condensers). It can be used for heat exchange in the condensers 3C and 3D in the inner part (without being warmed), and as a result, effective heat exchange is possible.
[0022]
Further, in FIG. 3, the structure of the refrigerator 1 according to the first embodiment of the present invention is shown in (a) a plan view, (b) a left side view, (c) a front view, (d) Are shown in right side views.
[0023]
Figure 3, with 併 allowed pipes form the coolant conduit is provided and in order to connect the refrigeration equipment to be housed in housing 12 in relation to the pipe forms the structure of the air intake formed by providing the air gap 14 Further illustrated .
[0024]
The structure of the air intake of the gap portion 14, in addition to the structure inlet 16 ing are respectively opened wants front portion after the front front portion and a condenser 3F condenser 3A communicates with the upper chamber, In this structure, a plurality of air intake ports 25 communicating with the gap portion 14 are opened in the left side plate and the right side plate. In the example shown in FIG. 3, the left side plate and the right side plate have a structure in which three units are arranged in a horizontal direction in units of V-shaped condensers with a set of two units. Three air intakes 25 are provided corresponding to each set of condensers. One of the air intake ports 25 has a structure in which, for example, three air intake ports 25 provided on the left side surface are used for drawing / withdrawing the refrigerant pipe.
[0025]
As illustrated in FIG. 3, the refrigerant pipes 20 and 21 for connecting the refrigeration equipment respectively housed in the upper chamber and the lower chamber divided by the partition wall 13 sandwich the partition wall 13 and the housing 12. The upper side and the lower side of the side wall are penetrated and the partition wall 13 is bypassed outside the side wall and extends vertically. In this case, since only the condensers 3A to 3F among the respective refrigeration equipment are accommodated in the upper chamber, the oil separator 8 and the coil inlet side of the condensers 3A to 3F are connected to each other with reference to FIG. A refrigerant pipe 20 as a gas pipe to be connected and a refrigerant pipe 21 as a liquid pipe that connects the coil outlet side of the condensers 3 </ b> A to 3 </ b> F and the liquid receiver 4, a portion immediately above the side wall of the housing 12 with the partition wall 13 interposed therebetween. In addition, the structure is formed by penetrating the portion directly below and bypassing the partition wall 13 outside the side wall and extending in the vertical direction and piping. In this case, on the upper chamber side, the refrigerant pipe 20 and the refrigerant pipe 21 are pulled out (drawn) using the air inlet 25. Reference numeral 22 denotes a refrigerant pipe as a liquid refrigerant outlet pipe for connecting the liquid receiver 4 and the expansion valve 5, and reference numeral 24 denotes a gas refrigerant inlet for connecting the evaporator 6 and the accumulator 7. It is a refrigerant pipe as a pipe, and is drawn out to an appropriate location on the side wall facing the lower chamber.
[0026]
By adopting such a refrigerant pipe configuration, it is not necessary to provide a through hole or the like through which the refrigerant pipe passes through the partition wall 13, and rainwater or the like is formed inside the housing 12 through the portion (through hole). Does not leak from the partition wall 13 into the lower chamber. Of course, even in the above-described form in which the refrigerant pipe is taken out from the side wall, there is a problem of leakage of rainwater or the like from the outside to the lower chamber if there is no seal structure, but in view of the rainwater dripping direction (substantially vertical), There is little influence if there are those outlets. Although the conventional structure in which the refrigerant pipe penetrates the partition wall 13 can deal with the problem of leakage of rainwater or the like if the seal structure is applied, the seal portion is located inside the housing 12. Therefore, there is a problem that it is difficult to perform the sealing work, but in this embodiment, this point can also be solved. Further, by providing the air intake 25, the outside air enters not only from the intake port 16 but also from the air intake 25, and flows into the condensers 3A to 3F through the gaps 14, so that the cooling effect is obtained. Can be raised.
[0027]
FIG. 4 shows the structure of the refrigerator 1 according to the second embodiment of the present invention. (A) is a plan view, (B) is a left side view, (C) is a front view, and (D) is a right side. Shown in a side view.
[0028]
In the refrigerator 1 according to the second embodiment of the present invention shown in FIG. 4, the same reference numerals are used for the corresponding members similar to those of the first embodiment, and detailed description is omitted. To do. The second embodiment has a structure in which six condensers 3A to 3F are erected in a pair with two sets facing each other in a V shape and are arranged in two rows in the horizontal direction. On the other hand, the refrigerator 1 of the present embodiment has four condensers 3A to 3D standing upright in a set of two sets facing each other in a V shape, and arranged in two rows horizontally. In addition, each of the six blowers 9 corresponding to the condensers 3A to 3D has a structure in which six blowers 9A to 9F are arranged, and differ in the number of condensers, blowers, and blowers. However, other refrigerant pipes 20 and 21 provided for connecting the refrigeration equipment housed in the casing 12 and the air intake provided in the gap portion 14 in relation to the pipe form. structure of the inlet 25, as well as with respect to various points of the operation and effect of their frozen according to the first embodiment 1 will not be described because it is similar to.
[0029]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects. That is, according to the first aspect of the present invention, the gap between the lower bottom portions of the plurality of the air-cooled condensers and the partition wall allows the outside air to reach the air-cooled condenser at least in the inner part of the air-cooled condenser. And a refrigerant pipe for connecting the refrigeration equipments, which are respectively housed in the upper chamber and the lower chamber divided by the partition wall, above the side wall of the housing with the partition wall interposed therebetween. Even if multiple air-cooled condensers are installed side-by-side by piping through the part and the lower part and bypassing the partition wall outside the side wall and extending in the vertical direction, and a is effective outside air to cool incorporated in air-cooled condensers to Turkey, also have effective heat exchange is improved performed by condensation capacity in the air-cooled condenser of the inner portion. In addition, since the sealing performance of the partition walls can be maintained high and rainwater and the like can be prevented from entering the lower chamber, the long life of the refrigerator can be achieved with a simple structure, and the maintenance can be simplified. .
[0030]
[0031]
[Brief description of the drawings]
FIG. 1 is a schematic structural diagram of a refrigerator according to a first embodiment of the present invention, where (A) is a side view and (B) is a front view.
FIG. 2 is a refrigeration circuit diagram related to the refrigerator shown in FIG. 1;
FIG. 3 is a structural diagram of the refrigerator according to the first embodiment of the present invention, in which (A) is a plan view, (B) is a left side view, (C) is a front view, and (D) is a right side. FIG.
FIG. 4 is a structural diagram of a refrigerator according to a second embodiment of the present invention, in which (A) is a plan view, (B) is a left side view, (C) is a front view, and (D) is a right side. FIG.
FIG. 5 is a structural diagram according to a first example of a conventional refrigerator.
FIG. 6 is a perspective view according to a second example of a conventional refrigerator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Refrigerator 2 ... Compressor 3A-3F ... Air-cooled condenser 4 ... Liquid receiver 5 ... Expansion valve 6 ... Evaporator 7 ... Accumulator 8 ... Oil separator 9A-9I ... Blower 10 ... Oil cooler 11 ... Filter 12 DESCRIPTION OF SYMBOLS ... Housing | casing 13 ... Partition 14 ... Air gap part 15 ... Air supply duct 16 ... Intake port 17 ... Air outlet 18-24 ... Refrigerant pipe 25 ... Air intake 26 ... Partition plate 27 ... Air supply port

Claims (1)

Refrigeration equipment including at least a compressor, a plurality of air-cooled condensers arranged in a row, and a liquid receiver are housed in an integrated housing, and the housing is divided into two upper and lower chambers by a partition wall. In the refrigerator which is housed in an upper chamber of the casing in which the air-cooled condenser is divided, outside air is conducted between a plurality of lower bottom portions of the air-cooled condenser and the partition wall. A gap is formed to reach the air-cooled condenser in at least the inner part of the air-cooled condenser, and the refrigeration equipments respectively housed in the upper chamber and the lower chamber separated by the partition are connected to each other. And a refrigerant pipe for extending through the upper and lower portions of the side wall of the housing with the partition wall interposed therebetween , and extending in the vertical direction around the partition wall and bypassing the partition wall. Refrigerator characterized by.

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