JP2017138088A - Cooling system for cabinet and cooling cabinet by forced air - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a size and a weight of a cooling system by using proper ventilation means at a low temperature side having horizontal ventilation flow, and using direct ventilation of a cabinet or an air duct.SOLUTION: An integrated cooling system for a cabinet, and a cooling cabinet by forced air are provided. In detail, the cooling system has a high temperature region including a cooling fluid compression device and a cooling fluid condensation medium, and a low temperature region including a heat exchanger (13), ventilation means (8), an air inlet, and an air outlet, so that the cooling system has a reduced size to effectively use a small internal volume of the cabinet when the cabinet is mounted in the cooling system. This invention relates to technical fields of providing a thermodynamic system and cabinet refrigeration.SELECTED DRAWING: Figure 1

Description

  The present invention describes a cooling system for a cabinet and a cooling cabinet with forced air. The present invention is in the field of thermodynamic systems and cooling cabinets.

  The diversity of supermarkets or transactions requires that merchandise be exposed and delivered to the customer so that the product desired by the customer can be easily moved from the shelf or storage location. However, when related to products that require refrigeration, such as drinks, dairy products, meat, vegetables, meat, etc., they need to be in a low temperature environment.

  Traditional cooling cabinets use axial fans that draw air through the bottom of the cabinet and discharge cool air through the walls of the lower and upper shelves. Some versions also discharge air from the front upper part to form an air curtain. The heat exchanger is usually attached to the bottom of the cabinet inside the air duct. Depending on the form and application of the case, the heat exchanger can be operated with direct expansion cooling or a secondary fluid, and in both cases the cooling system is remotely located.

  However, the system used in this situation is large and uses a large amount of cooling. This fact means that, in addition to reducing the useful volume inside the cabinet, for example, in a refrigerated cabinet, the cold side, ie the area where the cold air is discharged, is fixedly attached to the cabinet and uses up its internal volume. With greater difficulty in installing the system.

  In a more compact form, there is an option where the cooling system is attached directly to the cabinet. In this case, the cabinet allows for greater freedom with respect to its installation and does not depend on the preceding infrastructure for the office with respect to connection to the remote cooling system. The installation of multiple independent components and their subsequent interconnections can be achieved by direct mounting to the cabinet so that the cooling unit can no longer be removed without removing some or all of the cooling air supply. Understood. The direct cooling unit concept is more effective and significantly reduces the cooling charge. However, if the cooling system fails, it will lead to difficulties and slowness in moving or installing a new refrigeration unit, meaning that the entire cabinet will be damaged and that the cabinet will be out of operation.

  Another option is to consider a cooling system that is mounted independently of the cabinet. Its assembly to the cabinet is in this case usually done at the top, at the bottom or side of the cabinet, so that cold air is available inside it. For products mounted at the top of the cabinet, air is sucked through a central axial fan and attached to a tray that serves as a collector defrost and air duct, which is towards the heat exchanger, left and right Unload the cold. Another option for this same concept is to collect food heated air and provide cool air to the cabinet through the top opening so that the evaporator is mounted outside the cabinet.

  These installations allow the refrigeration unit to be modularized and quickly replaced if a failure occurs. There are also benefits of efficiency and reduced charge air cooling. However, these installations place some limitations on their direct use in the office. Its cold region is inserted into the cabinet, the first is effective for direct ventilation of the cabinet, but is inefficient when engaged with the air duct, because this is the air inlet of the axial fan This is because it requires two different ducts and an overlap, one duct for the air intake at the bottom of a tray, another duct on the left and right side at the cold air outlet. The second option is different from this, which is effective for installing pipes because it allows for a minimal internal space, but becomes an inefficient cabinet if the cabinet is required to be vented directly.

  Therefore, it is clear from the literature that no literature has been found that suggests or expects the teachings of the present invention, and therefore the proposed solution is novel to the current state of the art. And having an inventive step.

  Therefore, the present invention uses a suitable low-temperature ventilation means with horizontal ventilation flow to reduce the useful internal volume occupied by the installation of the cooling system in the refrigerated cabinet, and also the cabinet or air duct It aims to solve the problems listed in the industry by reducing the size and weight of the cooling system by allowing the use of direct ventilation.

For the first purpose, the present invention provides:
i. A cooling compressor assembly, and ii. Having cooling fluid condensing means a. A high temperature region (HR);
i. Heat exchanger (13),
ii. Ventilation means,
iii. An air inlet (14), and iv. Air outlet (15)
Having B. Low temperature region (CR),
With
The high temperature region (HR) and the low temperature region (CR) are separated by adiabatic means (12);
The cooling fluid compressor device, the cooling fluid condensing means, the expansion device, and the cold-side heat exchanger (13) are associated with one another through the cooling circuit;
The air inlet (14) and the air outlet (15) are mediated by a heat exchanger (13) and venting means,
Provide a cooling system for the cabinet.

For the second purpose, the invention is adapted to accept at least one cooling system as defined above,
a. The cabinet comprises an open area for inserting the cooling system;
b. The system is secured to the cabinet through the mounting area;
c. An air inlet (14) from the cabinet faces the heating area (HA) and / or the opening of the cooling cabinet that can allow access to the heating area (HA);
d. Providing a refrigerated cabinet with forced air, where the air outlet (15) faces the cold area (CR) of the cooling cabinet and / or the opening of the cooling cabinet that can allow access to the cold area (CR) To do.

Also, for the third object, the present invention
i. A cooling fluid compressor apparatus, and ii. Having cooling fluid condensing means a. A high temperature region (HR);
i. Heat exchanger (13),
ii. Ventilation means,
iii. An air inlet (14), and iv. Air outlet (15)
B. Low temperature region (CR),
With
The high temperature region (HR) and the low temperature region (CR) are separated by adiabatic means (12);
A cooling fluid compressor device, a cooling fluid condensing means, an expansion device, and a cold side heat exchanger (13) are associated between them by a cooling circuit;
The air inlet (14) and the air outlet (15) are mediated by a heat exchanger (13) and ventilation means,
The aeration means is constituted by a tangential type fan (8) associated with the air deflector (7) or by an axial flow type fan (8);
A cooling system for a cooling environment is provided.

  The inventive concept common to all claimed protection situations is a refrigerated cabinet that allows horizontal air flow, uses ventilation means with an original fan (8), and allows reversal of the direction of air flow through the positioning system More particularly, it relates to the use of a cooling system in a forced air cooling cabinet. This also allows for direct use in the cabinet or air duct as a cabinet operating characteristic or design.

  These and other objects of the present invention will be readily understood by those skilled in the art and by companies interested in the sector and will be described in sufficient detail to reproduce in the description below.

  These figures are presented to better define and clarify the contents of this patent application.

It is an exploded view of the cooling system presented by the present invention. Here, cover (1), compressor (2), fan compressor (3), base (4), base support (5), engine support (6), air deflector (7), fan (8) The tray (9), baffle tray (9a), access cover (10), condenser (11), insulation (12), and heat exchanger (13) are described in detail. FIG. 3 is a second exploded view of the cooling system presented in the present invention. Here, cover (1), compressor means (2), fan for compressor means (3), base (4), base support (5), engine support (6), air deflector (7), The fan (8), tray (9), baffle tray (9a), access cover (10), condenser (11), insulation (12), and evaporator (13) are detailed. Fig. 4 shows an exploded view of the cooling system presented in the present invention of a fan version of an axial evaporator, and in this case, an air-cooled condenser may be presented in a water-cooled version. Cover (1), compressor means (2), fan for compressor means (3), base (4), fan (8), tray (9), condenser (11), insulation (12), and An evaporator (13) is shown. It is a figure which shows the mounting system of the system proposed by this invention about a refrigeration cabinet. As shown, cabinet top (TG), insulation (12), cooling system hot zone (HR), cooling system cold zone (CR), air inlet (14), air outlet (15), cabinet The heating area (HA) and the cold area (CR) of the cabinet, both of which are in the interior area (IR) of the cabinet. To detail the high temperature region (HR) of the cooling system, the low temperature region (CR) of the cooling system, the heated region of the cabinet (HA), the cold region of the cabinet (CR), and the internal region of the cabinet (IR) FIG. 3 is a side view of an embodiment of the proposed system implemented in a refrigerated cabinet.

  The following description is presented by way of example and is not intended to limit the scope of the present invention, so that the purpose of this application will be more clearly understood.

  The present invention provides a cooling system to be installed in a refrigerated cabinet, as can be seen in FIG. 1, FIG. 2, or FIG. 3, but to maintain an appropriate temperature in the cabinet for the products stored therein. To do. And a cooling system for the high temperature region (HR) and the low temperature region (CR) of the high temperature region (HR) is defined, comprising components having a temperature rise during operation, and providing air under low temperature conditions The defined low temperature region (RF) region is responsible for cooling the interior region (IR) of the cabinet.

  In the context of the present invention, refrigerated cabinet means an environment for storage of products or any kind of thing that needs to be cooled to a suitable temperature. Forced air, such as shelves or cabinets, is available to grocery stores that store refrigerated or frozen products, for which appropriate product temperatures are used to avoid losing use. Must be maintained. Also, the offices listed in the present invention can be of modular type, i.e. the cabinet is coupled to other cases that are of the same type or different from operating together.

  The high temperature region (HR) located outside the refrigerated cabinet consists of a refrigeration compressor assembly and a condensed cooling medium, where complex processes occur by conventional means. The cooling may be any fluid that can be conditioned, compressed and condensed in the process. In one embodiment, the cooling used in the present invention is natural cooling R-290, but is not limited thereto.

  In one embodiment, the cooling compressor apparatus used in the present invention comprises at least one compressor (2) and at least one fan (3) of the compressor, but this is not necessary. The compressor (2) has the main function of achieving compression for cooling for further cooling processes and promotes the pressure differential for system operation, while the compressor fan (3) ) And / or to ensure air is blown into the condenser.

  In one embodiment, the means for condensing and cooling is air, water, or any other fluid provided by the structure of the installation product such as, for example, capacitor (11), water, or air. Can be understood by any component that can exchange the high pressure side of the heat and allow condensation for cooling.

  The cold region (CR) located inside the cooled cabinet comprises a heat exchanger (13), a vent means air inlet (14), and an air outlet (15). In this area, the air heated by the product stored in the cabinet, the heated area (HA) is cooled and sent to the cabinet in the suction area, the cold area (CR), as can be seen in FIG. Cool the area of interest, the interior area (IR) of the cabinet.

  In one embodiment, the means for venting the cold region (CR) comprises a fan (8) and a tangential air deflector (7), where air is in the axis of the fan (8). Go out tangentially. The tangential fan (8) reduces the size of the cooling system proposed in the present invention, resulting in the fact that the space where the cold region (CR) occupies the internal volume of the cabinet is reduced. In the second embodiment, the ventilation means includes an axial flow type fan (8). In this case, the axial flow fan (8) is used to a depth of a low temperature region (CR) and is installed inside the cabinet. Larger as it necessitates space to penetrate and direct the air to the heat exchanger (13). Already through the use of a tangential fan (8), the depth dimension is at most reduced to the width of the fan impeller or from the heat exchanger (13), anyway. This configuration allows the performance of the refrigeration system to be maintained when compared to a system using an axial flow type fan.

  Said tangential fan (8) has the function of moving the return air to the cabinet, i.e. hot air through the evaporator for cooling and its supply to the cabinet discharges the cold air. Also, an air deflector (7) is used to maximize the tangential fan inhalation (8) of air and to allow the generation of a directing vortex.

  In one embodiment, the heat exchanger (13) placed in the system is defined by meanders appearing adjacent along the length of the tangential fan (8). In one embodiment, as can be seen in FIGS. 1 and 2, the coil (13) is disposed parallel to the tangential fan (8) and extends along its length. This configuration reduces the air velocity through the heat exchanger (13), which reduces the pressure loss between the heat exchanger inlet pressure and the air outlet.

  For the fan (8) in the axial direction, it occupies a much larger internal volume, but this concept is also similar to that recognized in the form of cross-flow fans depending on the arrangement of the components. Allows their use directly in the duct. In this case, the reduction in product size allows its application even in smaller offices called product 1 ports. The version with a tangential fan allows its assembly into a larger office called two products or multiple ports.

  In the embodiment of the fan (8), the axial heat exchanger (13) is defined by meanders arranged in a region opposite to the region where the axial fan (8) is mounted.

  Moreover, both the ventilation means and the blower (8) in the tangential direction in the case of the axially ventilating device (8) are arranged in the cooling cabinet structure, which in this case does not belong to the cooling unit assembly, ie a refrigeration unit Is not provided with ventilation means.

  FIG. 4 shows the arrangement of the cooling system proposed in the present invention for a refrigerated cabinet, where the system mounting area is the cold area (CR) located in the area cooling cabinet, i.e. the desired product is stored and this is cooled. It can be seen that a portion can be provided. As such, the high temperature region (HR) is located in the insulated cabinet region and prevents heat generated by the operation of the component from being transferred to the low temperature region (CR). For this purpose, the high temperature region (HR) and the low temperature region (CR) are separated by a heat insulating material (12) arranged outside the cabinet.

  Any material that reduces heat transfer from the high temperature region (HR) to the low temperature region (CR) is understood by the thermal insulation (12). In that case, in one embodiment, the insulating medium used in the present invention is EPS (expanded polystyrene), its thermal conductivity is about 0.033 W / mK, PU (polyurethane), its thermal conductivity is It may be about 0.02 W / mK, or other insulating elements not listed.

  Thus, the system is attached to the refrigerated cabinet via the mounting area, which comprises a base (4) and a base support (5). The base (4) ensures the system structure and insulator housing (12) between the cold region (CR) and the high temperature (HR) and allows components to be mounted thereon. The base support (5) allows for the attachment of the refrigeration system to the cabinet, allows for the coupling of sealing members such as gaskets at the intermediate surface between the system and the cabinet, and acoustic thermal insulation. A sealing element is mounted around the intermediate surface between the case and the proposed system, avoiding physical contact with the metal parts and preventing outward cold air leakage or insect and dust ingress.

  The air intake (14) located in the cold zone (CR) is responsible for allowing the air to enter the heating zone (HA) of the cabinet, which is hot and therefore it is cooled. And advanced through the air vent (15) to the interior area (IR) of the cabinet. For this purpose, the air inlet (14) and the air outlet (15) are mediated by a heat exchanger (13) and the fan (8) allows horizontal ventilation.

  The concept of horizontal ventilation is defined by the fact that the air flow moves horizontally within the environment in which the system is applied, for example in a cooling cabinet.

  Thus, the ventilation means allows the direction of air flow to be defined according to the system configuration, in which case the direction is determined by the location where the proposed system is installed. The direction of the air flow is set by variation around 180 °.

  In addition, in the low temperature region (RF), a condensate tray (9) is arranged, which acts as an air duct for the heat exchanger (13), allowing the collection of defrost water and avoiding dripping in the office . This fact means that the system allows air flow circulation in both directions by simply inverting the refrigeration unit and reconditioning drain connections.

  The tray (9) presented in the tangential blower concept is equipped with a baffle (9a) that allows the direction of the air to enter or exit the system. That is, the cold air reaches the internal area (IR) of the refrigerated cabinet that is directed by the deflector (9a) at the system air outlet. In one example, the tray air deflector (9a) can provide an adjustable air outlet angle that can be adapted to the installation environment.

  The present invention also provides a forced air refrigeration cabinet that is adapted to receive the proposed cooling system, the arrangement of which is described herein as shown in FIGS. 4 and 5. The case has an open area for insertion of the proposed cooling system in order to facilitate the installation of the refrigeration unit. The system is thus placed in the cabinet cooling air, which in this case is forced through the mounting area included in the system itself, in which case the base support (5) is a fastener for connecting the system to the cabinet Allows insertion of

  In addition, the assembly of the system includes a system air inlet (14) facing the opening of the cooling cabinet that can allow access to the heating area (HA) of the cabinet, or a heating area (HA) such as a suction duct. Defined by

  Thus, the air outlet (15) faces the refrigeration cabinet opening that can allow access to the refrigeration cabinet cooling area (CR), or the cold area (CR), so that the cool air is This is done directly into the internal region (IR). Another way to provide a cold air supply to the interior area (IR) of the cooling cabinet is to engage the cooling system air duct located at the top (TG) of the cooling cabinet, thereby providing a single compartment or modular・ Cooled air can be provided to the office. Thus, the air outlet (15) may be wholly or partially engaged with the vent duct and provide cool air to be blown into the interior area (IR) of the cabinet.

  The forced air cabinet proposed in the present invention is coupled to at least one second cooling cabinet and may be of the same or different design, in which case all associated forced air cabinets are one. Or share multiple cooling units. Thus, once an associated set of cabinets can share two or more refrigeration units in operation, the total cooling unit cooling capacity is suitable for the total heat demand of all the cabinets associated with the assembly. .

  Therefore, the present invention provides a cooling cabinet with a small size cooling system that occupies a small internal volume of the cabinet, in addition, is low in weight, easy to install, and achieves airflow circulation in both directions with horizontal ventilation. to enable.

  Those skilled in the art will respect the knowledge presented herein, and may act on the inventions shown in the embodiments and other embodiments that fall within the scope of the appended claims. .

DESCRIPTION OF SYMBOLS 1 Cover 2 Compressor 3 Compressor fan 4 Base 5 Base support 6 Engine support 7 Air deflector 8 Tangential fan 9 Tray 9a Baffle tray 10 Access cover 11 Condenser 12 Heat insulating material 13 Evaporator 14 Air inlet 15 Air outlet CR, RF Low temperature area, Cooling area HA Heating area HR High temperature area, Heating area IR Internal area TG Top of cabinet

Claims (13)

i. A cooling fluid compressor apparatus, and ii. Having cooling fluid condensing means a. A high temperature region (HR);
i. Heat exchanger (13),
ii. Ventilation means,
iii. An air inlet (14), and iv. Air outlet (15)
B. Low temperature region (CR),
With
The high temperature region (HR) and the low temperature region (CR) are separated by adiabatic means (12);
A cooling fluid compressor device, a cooling fluid condensing means, an expansion device, and a cold side heat exchanger (13) are associated between them by a cooling circuit;
A cooling system for a cabinet, characterized in that the air inlet (14) and the air outlet (15) are mediated by a heat exchanger (13) and ventilation means.   The cooling system for a cabinet according to claim 1, characterized in that the ventilation means are constituted by at least one fan (8) of the tangential fan type associated with the air deflector (7).   2. Cooling system for cabinets according to claim 1, characterized in that the ventilation means are constituted by at least one fan (8) of the axial fan type.   The cooling system for a cabinet according to claim 1, wherein the ventilation means is arranged in a cabinet structure.   The cooling system assembly area of claim 1 comprising a cabinet capable of facilitating placement of a cold area (CR) in a cabinet cooling area and a high temperature area (HR) in an insulating area of the cabinet. Cooling system for the described cabinet.   The assembly region comprises at least one base (4) attached to at least one base support (5), wherein at least one sealing member is associated with said base support (5), The cooling system for a cabinet according to claim 5.   The cooling system for a cabinet according to claim 1 or 2, characterized in that the heat exchanger (13) is defined by a condenser arranged adjacent through the length of the tangential fan (8). .   6. A cooling system for a cabinet as claimed in any one of the preceding claims, characterized in that the aeration means is adapted to allow a horizontal aeration flow and is in a flow direction determined by system positioning. . Adapted to receive at least a cooling system as defined in claims 1 to 6;
a. The cabinet comprises an open area for inserting the cooling system;
b. The system is secured to the cabinet by an assembly area;
c. The air inlet (14) coming from the cabinet faces the heating zone (HR) and / or the cooling cabinet opening that can allow access to the heating zone (HR);
d. Cooling cabinet with forced air, characterized in that the air outlet (15) faces the cooling cabinet (CR) of the cooling cabinet and / or the cooling cabinet opening that can facilitate access to the cooling zone (CR) .   10. Cooling cabinet with forced air according to claim 9, characterized in that the air outlet (15) can directly expand the cool air inside the cabinet (IR).   10. Forced air according to claim 9, characterized in that the air outlet (15) can directly expand the cool air inside the cabinet (IR) and is connected in whole or part to the duct. By cooling cabinet.   12. Cooling cabinet with forced air according to claim 9-11, characterized in that it is at least coupled to a second cooling cabinet with forced air and the cooling unit is shared by all associated cabinets. i. A cooling fluid compressor apparatus, and ii. Having cooling fluid condensing means a. A high temperature region (HR);
i. Heat exchanger (13),
ii. Ventilation means,
iii. An air inlet (14), and iv. Air outlet (15)
B. Low temperature region (CR),
With
The high temperature region (HR) and the low temperature region (CR) are separated by adiabatic means (12);
A cooling fluid compressor device, a cooling fluid condensing means, an expansion device, and a cold side heat exchanger (13) are associated between them by a cooling circuit;
The air inlet (14) and the air outlet (15) are mediated by a heat exchanger (13) and ventilation means,
A cooling system for a cooling environment, characterized in that the ventilation means are constituted by a tangential type fan (8) associated with the air deflector (7) or by an axial flow type fan (8).

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