CN1003488B

CN1003488B - Refrigerated storage cabinet

Info

Publication number: CN1003488B
Application number: CN85108907.0A
Authority: CN
Inventors: 藤井澄
Original assignee: Sanden Corp
Current assignee: Sanden Corp
Priority date: 1984-11-14
Filing date: 1985-11-13
Publication date: 1989-03-08
Also published as: GB2167846A; GB8527741D0; CN85108907A; JPH0124547Y2; JPS6186675U

Abstract

A refrigerated display cabinet with a front glass window has a forced air circulating mechanism which comprises at least one blower fan and two air passageways to improve the display effectiveness. A refrigerating unit is disposed in the cabinet for cooling the storage/display compartment and an evaporator is of the refrigerating unit is disposed in the air passageway which is innermost. The air flow out from the air passages consists of different temperature air flows and moves along an inner surface of the front glass window to reduce the temperature difference across the glass window.

Description

Refrigerator

The present invention relates to a kind of refrigerator with air circulation device, its air circulation device is used to prevent produce condensed water on the refrigerator front glass window.

A refrigerator generally all has a frigorific unit, and this frigorific unit comprises an evaporimeter, a compressor and a condenser; Evaporimeter is used for storeroom or the storage and the showroom of cooling refrigeration cabinet, and compressor and condenser all are installed in the operating room of refrigerator.Generally by free convection or forced convection cooling wareroom, because the rotation of the mobile naturally or air blast of air, the air in the storeroom is by evaporimeter, and evaporimeter is installed in the top and/or the bottom of storeroom.By a temperature controller, for example a thermostat is controlled the work of frigorific unit, makes the temperature in the storeroom remain on predetermined value.

In this refrigerator, the part cooled air that has passed through evaporimeter tends to bump on the inner surface of front glass window, and flows down along it.Therefore, the inner surface of front glass window is by chilled air cools.Yet if the humidity of outside air is higher than the humidity of air in the storeroom, or the change of the temperature difference between outside air and the storeroom is big, will produce condensed water so on the outer surface of front glass window.The effect of the storeroom display commodity that exerted an influence of condensed water does not promptly see the commodity that are displayed in the storeroom 3.

And, invade the temperature difference that heat in the storeroom is proportional to the outer surface and the inner surface of front glass window by the front glass window, therefore, big if temperature difference becomes, the freezing capacity of frigorific unit will descend.

In the technology of existing solution condensed water and heat intrusion, many kinds of schemes have been adopted.One of them scheme is to use a pair of glass to make the front glass window, reduces temperature difference with this, is about to two and opposes mutually and be installed in the front of refrigerator as its front glass window with the glass in some gaps.But glass costs an arm and a leg, and is difficult to make it be applicable to various types of refrigerators its flexural deformation.

The purpose of this invention is to provide a kind of refrigerator that can prevent effectively that it from showing generation condensed water on the window, and the energy simplified structure, reduce cost, improve bandwagon effect.

A kind of refrigerator of design according to the present invention with commodity storage/showroom of sealing, its front openings covers to improve the display of commodity with Transparent Parts, the frigorific unit of this chamber of cooling is housed, the Transparent Parts that covers the refrigerator front openings is an individual layer, refrigerator is equipped with the air circulation device that comprises at least one air blast and at least two air ducts, the evaporimeter of frigorific unit is contained on the passage in two air ducts, make air form the air fluid layer of different temperatures, thereby make the temperature between the above-mentioned Transparent Parts surfaces externally and internally keep approaching, the temperature in the commodity storage/showroom of sealing then remains gives fixed temperature.

This structure only needs that traditional frigorific unit is done simple just the change and can realize, owing to formed effective air circulation in storeroom, has not only improved the effect of display commodity, and has improved the freezing capacity of frigorific unit.

In following accompanying drawing, represented the embodiment of some refrigerators that design according to the present invention.

Fig. 1 is the vertical cross section of existing refrigerator;

Fig. 2 is the vertical cross section of refrigerator of the present invention;

Fig. 3 is the perspective view that is used in the air circulation device in the refrigerator shown in Figure 2;

Fig. 4 is the local amplification profile of second embodiment;

Fig. 5 is the local amplification profile of the 3rd embodiment;

Fig. 6 is the local amplification profile of the 4th embodiment;

Fig. 7 is the vertical cross section of the 5th embodiment.

Referring to Fig. 2, a storage/showroom 11 is arranged at the top of refrigerator 10, and an operating room 12 is arranged at the bottom.Adiabatic wallboard 111 is gone up by one in chamber 11, adiabatic wallboard 112 under one, two sidewall paneling (not shown)s that are installed between wainscot 111 and the lower wall panels 112, glass door 114 constitutes behind front glass window 113 and one, back glass door 114 is slidingly installed, and is used for opening and closing the refrigerator rear opening.Level is installed many shelves 13 in storage/showroom 11, and chamber 11 is separated into many displays space.Have apart from the upper surface of lower wall 112 in the bottom of chamber 11 on the position in some gaps a base plate 14 is set.

As shown in Fig. 3 is clear like that, evaporimeter 15 is suspended on by dividing plate 16 on the inner surface of wainscot 111, dividing plate 16 is connected on the inner surface of wainscot 111 by connector 17.Therefore, two air ducts 201,202 have been formed at 11 top in the chamber, and the air that is recycled in the chamber 11 passes through any one in two air ducts 201,202.The effect of the air blast 18 by being positioned at air duct 201,202 inlet ends, the air in the chamber 11 are compelled to circulation.In this embodiment, an air blast 18 is installed in the inlet end of first and second air ducts, and air is sent in two air ducts.Also can as shown in Figure 4 air blast 18a and 18b be contained in the inlet end of

air duct

201 and 202 respectively,, will further improve the action effect of air circulation device because the air of having controlled in each air duct flows.Therefore, partly circulating air is by first air duct 201, carries out cooling chamber 11 after the heat exchange with evaporimeter 15, and simultaneously, remaining air is only by second air duct 202.The exhaust end of dividing plate 16 is bent downwardly the exhaust end that hides first air duct 201, and simultaneously, the exhaust end of second air duct 202 is also hidden by guide plate 19.Therefore, the air by first and second air ducts is blown out downwards.Drain pan 21 be contained in evaporimeter 15 below, be used to compile the water that drips down from evaporimeter 15.

The frigorific unit that uses in the refrigerator 10 is with chamber 11 coolings and keep its temperature, and it is generally all by a compressor, a condenser, and an evaporimeter 15 and a hydraulic accumulator are formed.Compressor, condenser and hydraulic accumulator all are installed in the operating room 12 of refrigerator bottom.When frigorific unit was worked, the air by evaporimeter 15 was cooled.

In this structure of refrigerator, the air in the chamber 11 is by air blast 18 forced circulation, and makes chamber 11 coolings by the cooling air of evaporimeter 15.When air circulation time in chamber 11, the air by second air duct 202 is by evaporimeter 15 refrigeration, and bumps on the inner surface of front glass window 113 after flowing out second air duct 202.Then, this strand air flows down along the inner surface of front glass window 113, and its flow direction is shown in arrow B among Fig. 2.On the other hand, the air by first air duct 201 is by evaporimeter 15 refrigeration, and directly do not contact with the inner surface of front glass window 5, and its flow direction is shown in arrow A among Fig. 2.This is to make its temperature stabilization because of the air by second air duct 202 around this thigh cooled air.

At this moment, the temperature of the air by second air duct 202 is higher than the temperature by the air of first air duct 201 slightly, and therefore, the temperature of front glass window 113 inner surfaces is held to be higher than slightly the temperature in the chamber 11.Thereby the temperature difference between front glass window 113 surfaces externally and internallies is very little.Because temperature difference is little, produces condensed water on the outer surface of front glass window 113 hardly.And the heat by front glass window 113 is invaded and also is reduced, thereby has improved the freezing capacity of frigorific unit.

Figure 5 shows that another kind of refrigerator, partly the part device of device and refrigerator shown in Figure 2 is identical for it, among the figure with identical numeral.In this embodiment, load onto an air deflector respectively on the exhaust outlet of first and

second air ducts

201 and 202, for example the honeycomb type air deflector 21, are used for correcting the air that flows out from each air duct, make air form the fluid layer of two different temperatures.Owing to used the air fluid layer of 21, two different temperatures of air deflector obviously to separate.Thereby make the mobile inner surface of being close to front glass window 113 of outer air, prevent to produce condensed water on the outer surface of front glass window 113.

Figure 6 shows that a kind of remodeling embodiment illustrated in fig. 4, wherein second air duct 202 is divided into two passages, for example is divided into upper channel 202a and lower channel 202b with second dividing plate 22.Owing to separated second channel 202, the temperature difference between outermost layer air stream and the innermost layer air stream is held bigger.Because having blocked from evaporimeter 15, down logical 202b is delivered to upper channel 202a heat, therefore by upper channel 202a and be not subjected to the influence of evaporimeter 15 work along the air that the inner surface of front glass window 113 flows downward.Therefore the temperature difference between the front glass window surfaces externally and internally is littler, thereby has prevented that front glass from upward producing condensed water in the surface outside window, and has reduced to pass through the heat that the front glass window is invaded.The function that lower channel 202b blocks the heat transmission also can realize by a heat insulating member is installed between second air duct and evaporimeter 15.

Figure 7 shows that another embodiment of refrigerator, wherein air duct and air chiller all are contained in the bottom of chamber 11.Formation first and second air ducts 201 between the upper surface of base plate 14 and lower wall panels 112 ', 202 '.Air duct separates along the horizontally extending dividing plate in space between base plate 14 and the lower wall panels 112 by one.Evaporimeter 15 be contained in first air duct 201 ' on.Second air duct 202 ' exhaust outlet open below front glass window 113, first air duct 201 ' exhaust outlet nestle up second air duct 202 ' the inboard.Air blast 18 be contained in two air ducts 201 ', 202 ' inlet end, make air form forced circulation.Along front glass window 113 up the flow air fluid layer by by first and second air ducts 201 ', 202 ' the air of different temperatures form, and the temperature of outer air stream is higher than the temperature of inner air stream slightly.This be because by second air duct 202 ' outer air stream not by the cause of evaporimeter 15 refrigeration.Therefore, the temperature of front glass window 113 inner surfaces is held to be higher than slightly the temperature in the chamber 11, thereby has solved the problem of condensed water and heat intrusion.

As mentioned above, the air duct that forms the air fluid layer is housed in the refrigerator of the design according to the present invention.These air fluid layers flow up or down along the inner surface of front glass window, and and the temperature of the contacted outer air stream of inner surface of front glass window 113 be higher than the temperature of immediate inner air stream slightly.Because the inner surface and the higher air fluid layer of temperature of front glass window contact, so the temperature difference between the front glass window surfaces externally and internally diminishes.Thereby limited the generation of condensed water, improved freezing capacity.

Claims

1, a kind of refrigerator with commodity storage/showroom of sealing, its front openings covers to improve the display of commodity with Transparent Parts, the frigorific unit of this chamber of cooling is housed, it is characterized in that, the Transparent Parts that covers the refrigerator front openings is an individual layer, refrigerator is equipped with the air circulation device that comprises at least one air blast and at least two air ducts, the evaporimeter of frigorific unit is contained on the passage in two air ducts, make air form the air fluid layer of different temperatures, thereby make the temperature between the above-mentioned Transparent Parts surfaces externally and internally keep approaching, the temperature in the commodity storage/showroom of sealing then remains gives fixed temperature.

2, refrigerator according to claim 1 is characterized in that, an air deflector all is housed respectively on the exhaust outlet of each air duct.

3, refrigerator according to claim 1 is characterized in that, first air duct of evaporimeter is housed in two air ducts, isolates with second air duct by the another one air duct.

4, refrigerator according to claim 1 is characterized in that, first air duct of evaporimeter is housed in two air ducts, isolates with second air duct by a heat-insulating shield.

According to the described refrigerator of above-mentioned arbitrary claim, it is characterized in that 5, the inlet end of each air duct is all installed an air blast respectively.

6, according to each the described refrigerator in the claim 1 to 4, it is characterized in that air circulation device is on the top of storeroom.

7, according to each the described refrigerator in the claim 1 to 4, it is characterized in that air circulation device is in the bottom of storeroom.

8, refrigerator according to claim 5 is characterized in that, air circulation device is contained in the top of storeroom.