JP2003106747A - Condensing unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem of a conventional cooling showcase to evaporate drained water with hot air from a cooling fan for condensation and using a hot pipe in which an overheated refrigerant flows that the structure of the unit chamber is restricted by considering the layout of the hot pipe, and a problem of the evaporating device of the showcase that the drained water which is not evaporated from an evaporation tray is reserved in a drained water tray below to be discharged by drawing the tray out by hand. SOLUTION: In the condensing unit, the hot pipe is eliminated to solve the above problems by setting an evaporator, which has the evaporation area for evaporating the whole defrosting water introduced to the evaporator with hot air, on a board located downwind of a fan. The evaporator is located at such a position that the defrosting water of a cooling showcase is introduced and the hot air blown out of the fan flows in directly.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor, a condenser for condensing refrigerant compressed by the compressor, and a blower for promoting heat exchange of the condenser. The present invention relates to a condensing unit arranged on a substrate. 2. Description of the Related Art Japanese Unexamined Patent Publication No. 7-4827 discloses an apparatus for evaporating defrosted water (drain water) in a cooling showcase such as a conventional freezing and refrigerated showcase. The unit room is provided with a compressor, a condenser, and a cooling fan for condensation. Behind the condensing cooling fan, a drain water evaporator in which three upper and lower evaporating dishes are installed is arranged. A hot pipe through which a superheated refrigerant flows is piped to each evaporating dish of the evaporating device to promote evaporation of drain water, and a receiving tray for collecting drain water overflowing from the evaporating dish is provided below the evaporating dish. Configuration. [0003] This evaporator is a mechanism for evaporating drain water by hot air from a condensing cooling fan and a hot pipe through which a superheated refrigerant flows, and the configuration of a unit room is restricted in consideration of the arrangement of the hot pipe. . In addition, in this evaporator, drain water that cannot be completely evaporated from the three-stage evaporating dish accumulates in a lower drain pan, and the accumulated drain water is
In this method, the tray is pulled out and thrown away by hand. [0004] The present invention is to provide an evaporator which does not require a hot pipe through which such superheated refrigerant flows and a drain pan, and further comprises a compressor and a condenser for condensing the refrigerant. A condensing unit in which a condenser and a blower for a condenser are arranged on a substrate is configured as a set, and the set is incorporated in a machine room. In this case, a condensing unit including an evaporating device is provided in a component of the set. Things. [0005] In order to solve the above problems, the present invention provides a compressor, a condenser for condensing a refrigerant compressed by the compressor, and a blower for promoting heat exchange of the condenser. And a condensing unit arranged on a substrate and installed in a lower machine room of a cooling showcase, wherein the defrost water of the cooling showcase is introduced onto the substrate downstream of the blower. A condensing unit provided with an evaporator having an evaporating area for evaporating all of the introduced defrost water by the warm air, at a position where the warm air discharged from the air directly flows in. [0006] This eliminates the necessity of the piping of the evaporating pipe and the drain pan, and the blower dedicated to the evaporator, which are conventionally required, and the cost can be reduced accordingly. And since the combination of the evaporator as one component of the condensing unit can be unitized as one set, when combining the refrigeration system with the cooling showcase, conventionally, the evaporating dish was cooled separately from the condensing unit. Compared to those installed in the lower machine room of the showcase, the components installed in the machine room can be modularized and the assembly of the cooling showcase can be simplified. Next, an embodiment of the present invention will be described. Each drawing shows an embodiment of the present invention, FIG. 1 is a schematic front perspective view of a cooling showcase, FIG. 2 is a schematic plan view of a condensing unit, FIG. 3 is a schematic front view of a condensing unit, and FIG. It is a perspective view of an evaporator. The present invention will be described with reference to the drawings. Reference numeral 1 denotes a cooling showcase. The article display room 2 is closed by a transparent opening / closing door 3 and the air cooled to the freezing temperature by the evaporator of the built-in freezing system is circulated to be cooled to the freezing temperature. This is a frozen showcase. Reference numeral 4 denotes a machine room formed at a lower portion of the cooling showcase 1, and a front surface thereof is opened and closed by an opening / closing lid 5. Reference numeral 6 denotes a condensing unit which constitutes a part of the refrigeration system. The condensing unit 6 is mounted on rails provided on the left and right sides of the machine room 4, inserted from the front of the machine room 4 and fixed at predetermined positions by bolt screws. Connected to piping. The condensing unit 6 can be pulled out forward from the rail at the time of repair or replacement. The condensing unit 6 includes a rotary compressor 7, a condenser 8 for condensing the refrigerant compressed by the compressor 7, and a blower 9 for promoting heat exchange of the condenser 8 on a substrate 10. Have been. In addition, on the substrate 10, a receiver tank 11 for the refrigerant flowing out of the condenser 8, an outlet valve 12A for connecting the liquid refrigerant flowing out of the receiver tank 11 to the piping of the refrigeration system, and a compressor from the piping of the refrigeration system. 7, an inlet valve 12B for the gas refrigerant returning to 7,
An accumulator 13 for the refrigerant returning from the evaporator of the refrigeration system to the compressor 7, a high / low pressure switch 14 of the refrigeration system, an electrical box 15, and the like are arranged. Reference numeral 16 denotes an evaporator mounted on the substrate 10 and constituting a part of the components of the condensing unit 6. The evaporator 16 has a mechanism in which defrost water from the evaporator of the refrigeration system is introduced and evaporated. The evaporating device 16 houses an evaporating cloth 18 having a function of sucking up defrost water introduced into the evaporating dish 17 having an upper surface opening by capillary action and exposing the defrosted water to air above the evaporating dish 17. In this configuration, the evaporating device 16 is located at a position where the hot air sent from the blower 9 that has exchanged heat with the condenser 8 directly flows in, and all the introduced defrost water is evaporated by the hot air. The surface area of the evaporating cloth 18 and the evaporating dish 17 is determined so as to have an evaporating area. For this reason, since the defrost water of the evaporator of the refrigeration system is evaporated by the evaporator 16 throughout the four seasons, there is no need to consider the drainage of the defrost water as in the conventional case. The location is not restricted. The present invention is not limited to the above embodiments, and various changes can be made without departing from the technical scope of the present invention, and the present invention includes various embodiments. According to the first aspect of the present invention, the piping of the evaporating pipe, the drainage tray, and the blower dedicated to the evaporator, which are conventionally required, are not required, and the cost can be reduced accordingly. In addition, by using a condensing unit having a space for installing an evaporator, when combining a refrigeration system with a cooling showcase, conventionally, the evaporating dish is installed separately from the condensing unit in the lower machine room of the cooling showcase. As compared with the case where a blower dedicated to the evaporating pipe or the evaporating device is provided, the components to be installed in the machine room can be modularized, and the assembly of the cooling showcase can be simplified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front perspective view of a cooling showcase according to the present invention. FIG. 2 is a schematic plan view of a condensing unit according to the present invention. FIG. 3 is a schematic front view of a condensing unit according to the present invention. FIG. 4 is a perspective view of an evaporator of a condensing unit according to the present invention. [Description of Signs] 1 ... Cooling Showcase 4 ... Machine Room 5 ... Refrigerant Channel 6 ... Condensing Unit 7 ... Compressor 8 ... Condenser 9 ... Blower 10 ..Substrate 16 evaporator

Claims (1)

Claims 1. A compressor, a condenser for condensing refrigerant compressed by the compressor, and a blower for promoting heat exchange of the condenser are arranged on a substrate, and a cooling showcase is provided. A condensing unit installed in a lower machine room, wherein the defrosted water of the cooling showcase is introduced onto the substrate downstream of the blower at a position where warm air directly discharged from the blower flows in. A condensing unit having an evaporator having an evaporating area for evaporating all of the introduced defrost water by the hot air.