JP6480814B2 - Refrigeration equipment - Google Patents

Description

  The present invention relates to a refrigeration apparatus, and more particularly to a refrigeration apparatus including a refrigerant circuit that condenses refrigerant discharged from a compressor and then evaporates the refrigerant in an evaporator to exert a cooling action.

  Conventionally, a vertical refrigeration apparatus having a casing that is long in the vertical direction is known (see, for example, Patent Document 1). In the vertical refrigeration apparatus, a storage chamber covered with a heat insulating panel is arranged at the upper part of the casing, and a machine room is arranged at the lower part of the casing. The machine room accommodated a compressor and a condenser provided in a refrigerant circuit for cooling the storage room, a fan for cooling them, and the like.

JP 2002-333255 A

  The compressor, the condenser, the fan, and the like were placed on a base plate that can be attached to and detached from the housing. This base plate may be distorted due to the weight of a compressor or the like placed thereon. When the base plate is distorted, there is a gap at the contact portion between the base plate and the housing, which may increase the fluttering of the base plate due to the vibration of the compressor or the like. An increase in flapping of the base plate can cause an increase in the vibration of the entire refrigeration apparatus.

  This application is made in view of such a situation, and the objective is to provide the technique for reducing the vibration of a freezing apparatus.

  In order to solve the above problems, an aspect of the present application is a refrigeration apparatus. The refrigeration apparatus includes a casing that partitions the storage chamber and the machine chamber, at least a compressor, a condenser, and an evaporator, a refrigerant circuit that cools the storage chamber by the evaporator, and cools the compressor and the condenser. A fan and a unit base disposed in the machine room and detachable from the housing are provided. A compressor, a condenser and a fan are mounted on the unit base. At least one of the unit base and the housing has a convex portion that abuts the other, and the unit base is supported by the housing via the convex portion.

  According to the present application, it is possible to provide a technique for reducing the vibration of the refrigeration apparatus.

It is a perspective view which shows schematic structure of the freezing apparatus which concerns on embodiment. It is a perspective view which shows the inside of a machine room. It is a top view which shows the inside of a machine room. It is a side view which shows the inside of a machine room. It is a perspective view which shows schematic structure of a unit base. FIG. 6A is a side view schematically showing the arrangement of the unit base and the base receiving portion. FIG. 6B is a cross-sectional view schematically showing an enlarged region where the convex portion, the first vibration absorbing material, and the insertion hole are provided in the unit base.

  The present invention will be described below based on preferred embodiments with reference to the drawings. The same or equivalent components, members, and processes shown in the drawings are denoted by the same reference numerals, and repeated descriptions are omitted as appropriate. The embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention. Further, terms such as “first” and “second” used in this specification or in the claims do not indicate any order or importance, but to distinguish one configuration from another. belongs to.

  FIG. 1 is a perspective view showing a schematic structure of a refrigeration apparatus according to an embodiment. In FIG. 1, illustration of a part of wall surface which a housing | casing has is abbreviate | omitted so that the structure inside a housing | casing can be seen. Further, the evaporator 230 is schematically illustrated. The refrigeration apparatus 1 includes a housing 100, a refrigerant circuit 200, a fixed base 300, a unit base 400, a fan 500, and a condenser base 600.

  The housing 100 is a box that partitions the storage room 110 and the machine room 120. In the present embodiment, housing 100 has a rectangular parallelepiped shape that is long in the vertical direction. The storage chamber 110 is used for accommodating living body-derived materials such as cells and living tissues, medicines, reagents, and the like. The storage chamber 110 is disposed vertically above the machine room 120, for example. The storage chamber 110 communicates with the outside through an opening (not shown). The storage chamber 110 is covered with a heat insulating material except for the opening, and the opening is closed with a heat insulating door (not shown). The opening of the storage chamber 110 is arranged on the front side of the refrigeration apparatus 1. Since the structure of the storage chamber 110 is known, a detailed description thereof will be omitted.

  The machine room 120 is a space in which a part of the refrigerant circuit 200, the fan 500, the condenser base 600, and the like are accommodated. In the machine room 120, a fixed base 300 and a unit base 400 are arranged. The fixed base 300 and the unit base 400 define the machine room 120 together with the housing 100. More specifically, the fixed base 300 and the unit base 400 constitute the bottom surface of the machine room 120.

  The refrigerant circuit 200 is a refrigerant circuit having a conventionally known general circuit configuration, and includes at least a compressor 210 (compressor), a condenser 220 (condenser), and an evaporator 230, and the storage chamber 110 is formed by the evaporator 230. Cooling. In the present embodiment, the refrigerant circuit 200 includes a compressor 210, a condenser 220, a capillary tube (not shown) as a decompressor, and an evaporator 230 as main components, and these are connected in an annular shape in this order. . The condenser 220 is composed of, for example, a wire capacitor. In the refrigerant circuit 200, the refrigerant is compressed by the compressor 210 and becomes a high-temperature gaseous refrigerant. This refrigerant is sent to the condenser 220 and condensed and liquefied in the process of passing through the condenser 220.

  The condensed refrigerant flows into the capillary tube, is decompressed, and flows into the evaporator 230. In the evaporator 230, the refrigerant takes heat from the surroundings and evaporates. Thereby, the cooling effect | action of a refrigerant | coolant is exhibited and the inside of the storage chamber 110 is cooled. The refrigerant evaporated in the evaporator 230 returns to the compressor 210 and is compressed again. 1 illustrates a structure in which the evaporator 230 is disposed on the outer peripheral surface of the storage chamber 110, but the present invention is not limited to this structure, and a shelf that is installed in the storage chamber 110 and divides the room (see FIG. 1). The evaporator 230 may be arranged on the back surface or the like (not shown).

  The fixed base 300 is a flat plate-like member, and is disposed in the machine room 120 and fixed to the housing 100. The unit base 400 is a flat plate-like member and is disposed in contact with the fixed base 300 in the machine room 120. The fixed base 300 is disposed on the front side of the refrigeration apparatus 1, and the unit base 400 is disposed on the back side of the refrigeration apparatus 1. The unit base 400 is detachably provided to the housing 100. The housing 100 has an opening 130 on the back side of the refrigeration apparatus 1 that allows the machine room 120 to communicate with the outside. The unit base 400 is inserted into the machine room 120 through the opening 130 and is taken out from the machine room 120 through the opening 130.

  The fixed base 300 has a flange portion 302 at the end on the unit base 400 side. Further, the unit base 400 has a flange portion 402 at an end portion on the fixed base 300 side. The flange portion 302 and the flange portion 402 are formed, for example, by bending an end portion of a flat plate member constituting the fixed base 300 or the unit base 400.

  The casing 100 is provided at the bottom of a pair of side walls facing each other, that is, at the bottom of a pair of wall surfaces extending substantially perpendicular to the front surface where the opening of the storage chamber 110 is provided and the back surface where the opening 130 is provided. A base receiving portion 140 that protrudes from the side wall toward the other side wall is provided. The base receiving part 140 has a hook part 142 that protrudes upward in the vertical direction and whose tip is refracted to the back side at a predetermined position in the front-rear direction (front-rear direction) of the refrigeration apparatus 1. The fixed base 300 is positioned in the front-rear direction of the refrigeration apparatus 1 by the flange portion 302 coming into contact with the hook portion 142. The fixed base 300 is fixed to the base receiving portion 140 at both side end portions. In addition, the fixed base 300 is fixed to the front end of the housing 100 at the front end. The unit base 400 inserted into the machine room 120 is positioned in the front-rear direction of the refrigeration apparatus 1 by the flange portion 402 being abutted against the hook portion 142. And the side edge part of both sides is fastened by the base receiving part 140 by the fastening member mentioned later. Further, the front end of the unit base 400 is prevented from being lifted by the front end of the flange portion 402 coming into contact with the portion of the hook portion 142 that is refracted toward the back side of the refrigeration apparatus 1. The shape of the unit base 400 and the fastening structure to the housing 100 will be described in detail later.

  Next, the inside of the machine room 120 will be described. FIG. 2 is a perspective view showing the inside of the machine room 120. FIG. 3 is a plan view showing the inside of the machine room 120. FIG. 4 is a side view showing the inside of the machine room 120. 2 to 4, the base receiver 140 is not shown. On the unit base 400, a compressor 210, a condenser 220, a part of piping of the refrigerant circuit 200, a fan 500, a condenser base 600, and the like are mounted. On the unit base 400, the compressor 210, the fan 500, and the condenser 220 mounted on the condenser base 600 are mounted on the same straight line in this order. The compressor 210 is disposed on the back side of the refrigeration apparatus 1, and the condenser 220 is disposed on the front side of the refrigeration apparatus 1.

  The fan 500 is a device for cooling the compressor 210 and the condenser 220. The fan 500 has a blowing direction A (a direction indicated by an arrow A in FIGS. 2 to 4) such that air flows from the condenser 220 side to the compressor 210 side. The air around the condenser 220 is sucked by the fan 500, whereby the condenser 220 is cooled. Further, the air is discharged from the fan 500 toward the compressor 210, whereby the compressor 210 is cooled. The air that has passed through the compressor 210 is exhausted to the outside through the opening 130. Note that air flows into the machine chamber 120 from the outside through a slit or the like provided as a vent provided in the fixed base 300.

  A condenser 220 is placed on the condenser base 600. The condenser base 600 has a base portion 602 and a first placement surface 604. The base portion 602 is a portion that supports the first placement surface 604 and is fixed to the unit base 400. Specifically, the base portion 602 is placed and fixed on the second placement surface 404 of the unit base 400. The compressor 210 and the fan 500 are also placed on the second placement surface 404.

  The first placement surface 604 is a surface on which the condenser 220 is placed, and is disposed above the base portion 602 in the vertical direction. Accordingly, the first placement surface 604 is positioned above the second placement surface 404 in the vertical direction. Further, the first placement surface 604 of the condenser base 600 is disposed so that a part thereof protrudes toward the fixed base 300 side. The condenser 220 is also arranged so that a part thereof protrudes toward the fixed base. That is, the condenser 220 and the condenser base 600 are provided in positions where the unit base 400, the condenser base 600, and the condenser 220 are arranged in the arrangement direction or in the vertical direction so that a part of the condenser 220 and the condenser base 600 overlap the fixed base 300.

  In the present embodiment, the compressor 210, the fan 500, and the condenser 220 are arranged on the same straight line. The condenser 220 has a substantially cubic shape. Furthermore, the condenser 220 is entirely upstream of the fan 500 in the blowing direction A of the fan 500. For this reason, if the whole of the compressor 210, the fan 500, and the condenser 220 is to be accommodated on the unit base 400, the unit base 400 needs to be enlarged. When the unit base 400 is increased in size, it is necessary to relatively reduce the size of the fixed base 300. However, downsizing of the fixed base 300 may cause a decrease in rigidity of the refrigeration apparatus 1.

  On the other hand, in this embodiment, the condenser 220 is placed on the condenser base 600 and protruded onto the fixed base 300. Accordingly, the compressor 210, the fan 500, and the cube-shaped condenser 220 are arranged on the same straight line while avoiding an increase in the size of the unit base 400, and the entire condenser 220 is disposed upstream of the blowing direction A of the fan 500. Can be placed on the side.

  By arranging the compressor 210, the fan 500, and the condenser 220 on the same straight line, the cooling efficiency of the compressor 210 and the condenser 220 can be improved. Moreover, the cooling efficiency of the condenser 220 can be further improved by disposing the entire condenser 220 on the upstream side in the blowing direction A of the fan 500. The condenser 220 is a circle drawn by the area of the region where the trajectory of the rotating wing part of the fan 500 overlaps with the condenser 220 or the trajectory of the tip of the wing part as seen from the arrangement direction of the fan 500 and the condenser 220. Is arranged with respect to the fan 500 so that the area of the region of the condenser 220 located inside is preferably 80% or more, more preferably 90% or more with respect to the area of the condenser 220.

  Further, the condenser 220 protrudes toward the fixed base 300 in a state where it is placed on the first placement surface 604 of the condenser base 600. The first placement surface 604 is higher than the second placement surface 404 of the unit base 400 by the height of the base portion 602. For this reason, when installing the unit base 400 in the machine room 120, it can avoid that the condenser 220 and the 1st mounting surface 604 interfere with the fixed base 300. FIG. Thereby, it is possible to avoid the condenser 220 from coming into contact with the fixed base 300 and being damaged. Further, the unit base 400 can be easily assembled to the housing 100.

  In the present embodiment, the fixed base 300 has a flange portion 302, and the unit base 400 has a flange portion 402. For this reason, the condenser base 600 has a base portion 602 that is higher than the flange portions 302 and 402. Thereby, it can avoid that the condenser 220 contacts the flange parts 302 and 402 and is damaged. Further, it can be avoided that the flange portions 302 and 402 are deformed due to contact with the condenser 220 or the first placement surface 604 and the unit base 400 cannot be installed at a position where the unit base 400 is to be arranged.

  Further, the condenser 220 is disposed at a high position with respect to the second placement surface 404 by the condenser base 600. Therefore, a space can be provided below the condenser 220 or the first placement surface 604. For this reason, the heat dissipation of the condenser 220 can be improved. Further, by providing a vent hole such as a slit on the first placement surface 604, the heat dissipation of the condenser 220 can be further improved.

  The condenser 220 is a cube capacitor having a substantially cubic shape. For this reason, the welding location at the time of manufacturing a condenser can be reduced compared with the L-shaped capacitor conventionally used. Thereby, the manufacturing cost of a condenser and by extension, the manufacturing cost of the freezing apparatus 1 can be reduced.

  Next, the shape of the unit base 400 and the fastening structure of the unit base 400 to the housing 100 will be described. FIG. 5 is a perspective view showing a schematic structure of the unit base 400. FIG. 6A is a side view schematically showing the arrangement of the unit base 400 and the base receiving portion 140. FIG. 6B is a cross-sectional view schematically showing an enlarged region where the convex portion 406, the first vibration absorbing material 408, and the insertion hole 410 are provided in the unit base 400. In addition, illustration of the fastening member 700 is abbreviate | omitted in FIG. 6 (A).

  In the present embodiment, as described above, the compressor 210, the fan 500, and the condenser 220 are arranged on the same straight line. A part of the condenser 220 protrudes from the unit base 400 to the fixed base 300 side. For this reason, the unit base 400 is easily distorted by the weight of the compressor 210, the fan 500, and the condenser 220. When the unit base 400 is distorted, it is difficult to bring the base receiving portion 140 and the unit base 400 into surface contact. As a result, the unit base 400 flutters easily due to the vibration of the compressor 210 and the like, and the fluttering degree increases.

  On the other hand, the unit base 400 of the present embodiment has a convex portion 406 that contacts the base receiving portion 140. The convex portions 406 are evenly provided in the front-rear direction of the refrigeration apparatus 1 at both ends of the unit base 400 that abuts the base receiving portion 140. In the present embodiment, convex portions 406 are provided at the front end, the rear end, and the center of the unit base 400. The convex portion 406 can be formed, for example, by performing a pressing process from the second placement surface 404 side. And the unit base 400 is supported by the base receiving part 140 of the housing | casing 100 via the some convex part 406 which protrudes in the base receiving part 140 side. For example, the convex portion 406 has a diameter of about 11 mm and a protruding height of about 1 mm.

  In this manner, the base receiving portion 140 and the unit base 400 can be brought into point contact by bringing the convex portion 406 into contact with the base receiving portion 140. That is, the base receiving part 140 supports the unit base 400 at a plurality of points. As a result, even if the unit base 400 is distorted, the base receiving part 140 and the unit are compared with the case where the convex part 406 is not provided, that is, compared with the case where the base receiving part 140 supports the unit base 400 on the surface. Generation of an unintended gap between the base 400 and the base 400 can be suppressed.

  Therefore, the unit base 400 is stably supported by the base receiving part 140 via the convex part 406. For this reason, even when the unit base 400 vibrates due to the vibration of the compressor 210 or the like, the unit base 400 can be prevented from flapping and hitting the base receiving portion 140. As a result, the machine vibration of the refrigeration apparatus 1 can be suppressed.

  In addition, the refrigeration apparatus 1 includes a first vibration absorber 408. The first vibration absorbing material 408 is a member made of an elastic material such as rubber, for example, and is interposed between the unit base 400 and the base receiving portion 140. For example, the first vibration absorber 408 is in the form of a sheet, one main surface is in contact with the unit base 400, and the other main surface is in contact with the base receiving portion 140. The first vibration absorber 408 can inhibit vibration transmission between the unit base 400 and the housing 100. Thereby, the body vibration of the refrigeration apparatus 1 can be further suppressed.

  The first vibration absorber 408 is provided in the vicinity of the opening 130 (see FIG. 1). For example, the first vibration absorbing material 408 is disposed closer to the opening 130 than the intermediate position of the unit base 400 in the front-rear direction of the refrigeration apparatus 1. Alternatively, the first vibration absorber 408 is disposed closer to the opening 130 than the convex portion 406 closest to the opening 130. In the present embodiment, a first vibration absorber 408 is provided at the rear end of the unit base 400. Usually, the unit base 400 is slid on the base receiving part 140 and accommodated in the machine room 120. By providing the first vibration absorber 408 in the vicinity of the opening 130, it is possible to suppress the sliding of the unit base 400 from being hindered by the first vibration absorber 408.

  The unit base 400 is fastened to the housing 100 by a fastening member 700. The unit base 400 has an insertion hole 410 for the fastening member 700 between the convex portion 406 a closest to the first vibration absorbing material 408 and the first vibration absorbing material 408. By disposing the insertion hole 410 between the convex portion 406a and the first vibration absorbing material 408, the first vibration absorbing material 408 can be more securely attached to the unit base 400 and the base receiving portion 140 by fastening the fastening member 700. It can be made to contact. In addition, since the rear end side of the unit base 400 is fastened to the base receiving portion 140 by the fastening member 700, the unit base 400 is easily inclined so that the front end side is raised and the rear end side is lowered. On the other hand, since the first vibration absorber 408 is disposed on the rear end side of the unit base 400, the inclination of the unit base 400 can be suppressed.

  In addition, the refrigeration apparatus 1 includes a second vibration absorber 412. The second vibration absorbing material 412 is a member made of an elastic material such as rubber, for example, and is interposed between the unit base 400 and the compressor 210. For example, the second vibration absorbing material 412 has a sheet shape, one main surface is in contact with the second placement surface 404 of the unit base 400, and the other main surface is in contact with the bottom of the compressor 210. By providing the second vibration absorbing material 412, the support points of the compressor 210 can be increased. Thereby, since the vibration transmission path from the compressor 210 to the unit base 400 is dispersed, the vibration of the unit base 400 can be suppressed. In addition, vibration of the piping of the refrigerant circuit 200 mounted on the unit base 400 can be suppressed.

  As described above, in the refrigeration apparatus 1 according to the present embodiment, the compressor 210, the fan 500, and the condenser 220 mounted on the condenser base 600 are placed on the same straight line in this order on the unit base 400. It is mounted side by side. Further, the condenser 220 and the condenser base 600 are arranged so that a part of each condenser protrudes to the fixed base 300 side. Thereby, the cooling efficiency of the compressor 210 and the condenser 220 can be improved. Moreover, since the enlargement of the unit base 400 can be avoided, the strength of the refrigeration apparatus 1 can be maintained. Therefore, it is possible to achieve both improvement of the cooling performance of the refrigeration apparatus 1 and maintenance of rigidity.

  Further, the first placement surface 604 of the condenser base 600 is disposed above the second placement surface 404 of the unit base 400 in the vertical direction. Thereby, when installing the unit base 400 in the machine room 120, it can avoid that the condenser 220 contacts the fixed base 300 and is damaged. In addition, the unit base 400 can be easily installed in the machine room 120. Further, the entire condenser 220 is disposed upstream of the fan 500 in the air blowing direction A. Thereby, the cooling efficiency of the condenser 220 can be further improved.

  In the refrigeration apparatus 1 according to the present embodiment, the unit base 400 that can be attached to and detached from the housing 100 is provided with a convex portion 406 that protrudes toward the base receiving portion 140 of the housing 100. Then, the unit base 400 is supported by the base receiving part 140 through the convex part 406. Thereby, even when the unit base 400 is distorted by the weight of the compressor 210 or the like, the base receiving portion 140 can stably support the unit base 400. For this reason, it can suppress that the vibration of the compressor 210, etc. are amplified by the unit base 400, Therefore, the vibration of the refrigerating apparatus 1 can be reduced. Further, vibration transmission to other parts constituting the refrigeration apparatus 1 can be suppressed.

  In addition, the refrigeration apparatus 1 has a first vibration absorber 408 interposed between the unit base 400 and the base receiver 140 in the vicinity of the opening 130. Thereby, since the transmission of the vibration between the unit base 400 and the housing | casing 100 can be suppressed, the vibration of the freezing apparatus 1 can be suppressed more. In addition, since the first vibration absorbing material 408 is provided in the vicinity of the opening 130, it is possible to prevent the unit base 400 from being prevented from being installed in the machine room 120.

  The unit base 400 is a fastening member 700 for fastening the unit base 400 to the base receiving portion 140 between the convex portion 406a closest to the first vibration absorbing material 408 and the first vibration absorbing material 408. The insertion hole 410 is provided. As a result, the first vibration absorber 408 can be brought into contact with the unit base 400 and the base receiver 140 more reliably. In addition, the refrigeration apparatus 1 includes a second vibration absorber 412 that is interposed between the unit base 400 and the compressor 210. Thereby, since it can suppress that the vibration of the compressor 210 is transmitted to the unit base 400, the vibration of the unit base 400 and the vibration of piping can be suppressed.

  The present invention is not limited to the above-described embodiments, and various modifications such as various design changes can be added based on the knowledge of those skilled in the art. Forms are also included within the scope of the present invention. A new embodiment generated by adding a modification to the above-described embodiment has the effects of the combined embodiment and the modification.

  In the above-described embodiment, the convex portion 406 is provided on the unit base 400. However, the configuration is not particularly limited to this configuration, and a convex portion that protrudes toward the unit base 400 may be provided in the base receiving portion 140. In addition, convex portions may be provided on both the unit base 400 and the base receiving portion 140. Further, the number and arrangement of the convex portions 406 are not limited to those illustrated.

  DESCRIPTION OF SYMBOLS 1 Refrigeration apparatus, 100 Case, 110 Storage room, 120 Machine room, 130 Opening part, 200 Refrigerant circuit, 210 Compressor, 220 Condenser, 230 Evaporator, 300 Fixed base, 400 Unit base, 404 2nd mounting Surface, 406,408 first vibration absorbing material, 410 insertion hole, 412 second vibration absorbing material, 500 fan, 600 condenser base, 604 first mounting surface, 700 fastening member.

Claims (4)

A housing that partitions the storage room and the machine room;
A refrigerant circuit having at least a compressor, a condenser and an evaporator, and cooling the storage chamber by the evaporator;
A fan for cooling the compressor and the condenser;
A unit base disposed in the machine room and detachable from the housing;
The compressor, the condenser and the fan are mounted on the unit base,
At least one of the unit base and the housing has a plurality of convex portions that are in point contact with the other, and the unit base is supported by the housing via the convex portions. The housing communicates the machine room with the outside and has an opening into which the unit base is inserted.
2. The refrigeration apparatus according to claim 1, further comprising a first vibration absorbing material provided in the vicinity of the opening and interposed between the unit base and the housing. The unit base is fastened to the housing by a fastening member,
3. The refrigeration apparatus according to claim 2, wherein the unit base includes an insertion hole for the fastening member between the convex portion closest to the first vibration absorbing material and the first vibration absorbing material.   The refrigeration apparatus according to any one of claims 1 to 3, further comprising a second vibration absorbing material interposed between the unit base and the compressor.

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