CN1013402B

CN1013402B - Absorption-diffusion refrigerator

Info

Publication number: CN1013402B
Application number: CN88103910A
Authority: CN
Inventors: 克鲁狄科·丹尼斯; 狄哈斯·罗伯特
Original assignee: Association pour la Recherche et le Developpement des Methodes et Processus Industriels
Current assignee: Association pour la Recherche et le Developpement des Methodes et Processus Industriels
Priority date: 1987-05-18
Filing date: 1988-05-18
Publication date: 1991-07-31
Also published as: BR8802503A; PT87497A; AU1638888A; OA08851A; CN1030637A; AU602984B2; FR2615603B1; FR2615603A1

Abstract

The present invention relates to a refrigerator of the absorption-diffusion type, which includes a lower refrigeration compartment, an upper freezing compartment and a refrigerating unit. This refrigerator is characterised in that it is made in two parts which can be fitted one into the other, namely a parallelepipedal cabinet 1, the rear face of which is open over all or the greater part of its height, and an added part (aggregate) 2 which can be fitted in a sealed manner into the cabinet 1 and comprising the refrigerating unit and a vertical wall 12.

Description

Absorption-diffusion refrigerator

The present invention relates to a kind of bottom is that refrigerating chamber, top are the diffusioning-absorption refrigerator of refrigerating chamber.

This refrigerator circulates as cold-producing medium with ammonia usually.This refrigerator comprises a refrigeration unit, and the bottom generator of unit is at the outside rear of refrigerator, and generator is communicated with the condenser that is positioned at top, refrigerator outside by a pipe.The outlet of condenser communicates with an evaporimeter that is made of the pipeline in the wall that is placed on refrigerating chamber, and low-temperature refrigerant just flows in above-mentioned pipeline.Should go up evaporimeter and communicate with the following evaporimeter that is made of pipeline and be placed in the refrigerating chamber of bottom, the refrigerant temperature that flows through in this pipeline is higher.Following evaporimeter links to each other with the absorber that is positioned at outside, device back, and absorber communicates with the hold-up vessel that links to each other with generator again.

Some diffusioning-absorption refrigerators recently, one of them object lesson are described in French Patent (FRP) FR-A-1251816 to some extent.This class refrigerator is assembled by two parts, and one of them parts can be packed in another parts.That is to say that a hexahedral housing and the assembly that can put into housing are hermetically arranged.There is opening above-mentioned housing back, and a horizontal cross member is arranged at housing top, is divided into refrigerating chamber and refrigerating chamber; Said modules comprises refrigeration unit and a vertical panel of being made by heat-insulating material, and this vertical panel is assemblied on the housing rear opening, in order to seal this opening.Extend forward by means of a box part on the top of vertical back plate, and this box part is put into by formed cavity between horizontal wall on the housing, horizontal cross member and two vertical walls.In this class refrigerator, to carry out thermal insulation with two kinds of different heat-insulating materials between the box part of the assembly in housing top refrigerating chamber and this chamber of packing into, promptly form hard heat-insulating material and as lacerable braid of making by mineral wool of the foamed material and so on of housing freezer compartment wall.Braid is inserted between the box part of a part of corresponding adiabatic wall of housing and constituent components, and it is not placed in the refrigerating chamber of housing.For example the cast on-site polyurethane foam material is when making adiabatic wall, and the refrigerating chamber on housing top can be used as adiabatic core rod.

The present invention relates to improvement,, and between above-mentioned two parts, need not just can obtain good insulation effect by lacerable heat insulation layer that the mineral wool fabric forms so that its manufacturing is simple to this class refrigerator.

For this reason, this diffusioning-absorption refrigerator comprises a bottom refrigerating chamber, a top refrigerating chamber and a spread-absorbing type refrigeration unit, and this refrigerator is assembled by two parts, and one of them parts is packed in another parts.These two parts are a hexahedron housing and an osteomere of putting into housing hermetically.The hexahedron housing has one to go up horizontal cross structure machine, is divided into the refrigerating chamber and the refrigerating chamber of back opening.Described osteomere comprises a refrigeration unit and a vertical back plate that is made of heat-insulating material, should can seal the formed opening in housing back by vertical back plate, vertical back plate extends forward by a box part, and this box part is put into by the last horizontal wall of housing, horizontal cross member and two spaces that the vertical edges wall is constituted.

In the following description, the sub-assembly of refrigeration unit, its special heat-insulating shield and its long slab is represented word " osteomere ", the whole assembly that is just constituted, and it can be made separately, and then fits together with housing.

This refrigerator is characterised in that above-mentioned vertical back plate extends to whole housing height substantially, opening is vertically sealed the bottom of back plate by the thermal insulation of evaporimeter down is housed at the refrigerating chamber of the lower housing portion of back, the adiabatic wall of housing and osteomere is made by hard heat-insulating material, they are installed into each other and directly are close to, and need not insert lacerable heat-insulating fiber fabric.

The advantage of refrigerator of the present invention is: two building blocks, be housing and osteomere, can be in the different places manufacturing, make the land used assembling again, like this, the most complicated and the most expensive osteomere can be produced in batches in the given place that relatively is suitable for making, and housing itself can easily be made at the scene, even also can make in the country that lacks advanced process equipment, because it is relatively simple for structure.

Though this refrigerator is to be fitted together and constituted by two individual components, because each parts assembling design is reasonable, thereby by simply two parts directly being assembled together contiguously, and need not insert glass fibre and so on, lacerable adiabatic fabric, also can have fabulous insulation effect.Adopt this adiabatic method, can obtain very low temperature in the refrigerating chamber, under ambient temperature meets or exceeds 40 ℃ situation, also can hang down-18 ℃ exactly.And owing to have suitable guiding parts, osteomere just can be positioned at the housing the inside exactly during assembling.Because the pipeline of evaporimeter is installed on the stiffener of being made by the good material of heat conductivility, and this stiffener has constituted the surface of refrigerating chamber, so the distribution of the cold of freezer compartment of refrigerator inside is very even.

Can understand the present invention further with reference to accompanying drawing and following description.

Fig. 1 is two critical piece simplified perspective view of refrigerator of the present invention, and it has represented the situation that parts are not packed into and gone in another parts;

Fig. 2 is the parts transversely cutaway view of doing along II among Fig. 1-II line, and this moment, refrigerator installed;

Fig. 3 is the parts transversely cutaway view of doing along III among Fig. 1-III line, and this moment, refrigerator installed;

Fig. 4 is the part vertical sectional view of doing along IV among Fig. 1-IV line, and this moment, refrigerator installed;

Fig. 5 is the refrigeration unit assembling view, and its building block does not all draw;

Fig. 6,7 and 8 represents the perspective view of the different embodiment of last evaporimeter that link to each other with refrigerating chamber respectively;

Fig. 9 is the perspective view that has amplified, it represent to flow in it cold-producing medium pipeline and form connection between the inwall of box part of refrigerating chamber.

Diffusioning-absorption refrigerator of the present invention is made up of two critical pieces, and parts in them are contained in another parts.These two critical pieces are: the housing 1 of a common hexahedral shape and one osteomere 2 the housing of can packing into from the housing rear portion.Housing 1 has a bottom 3, and 3 extend two vertical sidewalls that are parallel to each other 4 and 5 from the bottom, and top, two side couples together by a horizontal wall 6 and a by-level cross member 7.All wall 3-6 and cross member 7 be by hard heat-insulating material, for example same thickness a(90mm for example) foamed plastics make.The end 3 and cross member 7 have been determined bottom refrigerating chamber 8, and cross member 7 and last parallel walls 6 have been determined top refrigerating chamber 9, load onto corresponding door (not drawing among the figure) respectively in the front of housing 1, so that bottom refrigerating chamber 8 and top refrigerating chamber 9 are closed, like this, housing 1 is just complete.

The back vertical plane of housing 1 all opens wide, so that osteomere 2 is loaded into from being close to here.Osteomere 2 comprises all parts of refrigeration unit 11, and whole refrigeration unit is shown in Figure 5.Osteomere 2 has the square vertical support plate of a block length 12, and this gripper shoe is made by hard heat-insulating material, and its shape is identical with the shape of housing back opening, so that in this opening of osteomere being packed into, and fully opening is sealed.Extend forward by means of the adiabatic box part 13 of a front portion and bottom opening on the top of adiabatic gripper shoe 12, and this box part is formed by upper water planomural 14 and two 15,16 of vertical walls that extend downwards.The external dimensions of adiabatic box part 13 is chosen to closely cooperate with the inside dimension of the top refrigerating chamber 9 of housing 1.

Preferably the vertical sidewall 15 and 16 of box part 13 draws in forward each other a little, and equal angular is also drawn on the top of two vertical sidewalls 4 of housing 1 and 5 inner surface each other in.Equally, the upper wall 14 of box part 13 from top to bottom, tilt slightly a bit from back to front, the inner surface of the last horizontal wall 6 of housing 1 or lower surface similarly slightly inclination a bit make box part 13 can be placed to tightly in the top refrigerating chamber 9 of housing 1.

In addition, the lower surface of two vertical sidewalls 15,16 of box part 13 from the bottom up, tilt slightly from back to front can move at upper edge, position gathering sill or ramp 17,18 like this.Gathering sill or ramp 17,18 are formed on the both sides of upper surface of cross member 7, and their gradient is identical with the gradient of the lower surface of the wall 15,16 of box part 13.Like this, because gathering sill 17,18 osteomere is accurately located with respect to housing, and this housing has flatly placed in advance according to the needed mobile gradient of cold-producing medium.

As shown in Figure 2, two vertical side 12a of gripper shoe 12 slightly inwardly draw in, so that can be close to the stayed surface with identical gradient, for example are close to by the formed supporting surface 4a in the inner surface rear portion of housing vertical sidewall 4,5.Equally, lower horizontal plane 12b(Fig. 4 of gripper shoe 12) preferably also from the bottom up tilt a bit slightly from back to front,, have on the upper surface 19 identical gradient, housing below rearward part so that be pressed in, above-mentioned below rearward part has constituted the not only shallow but also short end 20 of housing 1.

By the gripper shoe 12 that hard heat-insulating material is made, its rear surface is fixed on the vertical metallic plate 21.Metallic plate 21 extends to the whole height of housing, and covers constituting go to the bottom 20 rear vertical wall of housing.As foregoing, refrigeration unit 11 is done as a whole by osteomere 2 supports.This unit is at vertical heat-insulating shield 12 rear portions, and it comprises a vertical generator 22, and the upper end of generator links to each other with condenser 24 by pipeline 23, and condenser 24 is fixed to the outside on vertical panel 12 tops.The outlet opening of condenser 24 links to each other with evaporimeter 25 with a pipe.Evaporimeter 25 has two parts, promptly is installed in the last evaporimeter 26 in the box part 13, and it is used for producing low temperature in the refrigerating chamber of top, and the following evaporimeter 27 that produces higher temperature in the refrigerating chamber of bottom.It the pipe of last evaporimeter 26 is curved, so that can be installed along the given path in some or all adiabatic wall of top box part.The pipe of evaporimeter 25 all has the identical gradient on its whole passage, so that make flow of refrigerant even.

In the embodiments of the invention shown in Fig. 5 and Fig. 6, the perpendicular cross-sectional shape of box part 13 is for falling " U " word, and in other words, its opening down.The pipeline that is placed on the last evaporimeter 26 in the box part 13 is at first coiled the ring segment 28 that extends forward in the horizontal wall 14 on box 13; Then, be pipeline section 29 on vertical wall 12 tops; Curved the U-shaped section 31 that level is extended forward in the on the left side vertical wall 15 again; Then, be pipeline section 32 on vertical 12 tops, and then in the right part vertical wall 16 of box 13, be made to the U-shaped section 33 of extending forward; At last, be pipeline section 34 on vertical wall 12 tops, pipeline section 34 communicates with following evaporimeter 27.Following evaporimeter 27 comprises the coil pipe that all is placed in vertical wall 12 bottoms, and the bottom of vertical wall 12 constitutes the end of refrigerating chamber.Following evaporimeter is linked refrigerant storage container 35 by an absorber (not drawing among the figure), and container 35 is linked the bottom of generator 22.

Another embodiment of the present invention as shown in Figure 7, seal with a horizontal wall 36 bottom of box part 13, this horizontal wall is just by on the cross member 7 of housing.In this case, the thickness of the lower wall 36 of cross member 7 and box part 13 all should reduce, and makes that their gross thickness of two are consistent substantially with the thickness of each adiabatic wall of refrigerator.

In this embodiment, following horizontal wall 36 also is equipped with and uses the additional annular section 37 that evaporator pipeline constitutes.This additional annular section is extended between pipeline 34 and following evaporimeter 27.Thereby, the pipeline section that formation goes up evaporimeter all is housed on five adiabatic walls of box part 13.

Figure 8 shows that another embodiment of the present invention.Wherein, box part 13 is a shape shown in Figure 6, and promptly opening and is gone up evaporimeter and reduced to and have only two U-shaped sections 31,33 and three-joint pipe section 29,32,34 down.Two U-shaped sections are placed on respectively in two sidewalls 15,16 of box part 13, and the three-joint pipe section places in the top of vertical wall 12.

Fig. 9 has illustrated the method that evaporator pipeline and refrigerating chamber inside are combined.With a kind of by the good material of heat conductivility, for example the stiffener 38 that is pressed into of aluminium flake is close to the inboard of the adiabatic wall 14,15,16 of box part 13, possible words, liner is also sticked in inboard at wall 36, this liner is as the inner surface of each adiabatic wall, and having protruding inwards rib 39, rib 39 is placed along the path of evaporator tube 41.These protruding inward ribs 39 have formed groove outwardly, and a pipe part of 41 is placed in the groove, by welding, make waveform or bonding and so on method can be fixed on pipe in the groove.

Like this, between pipe 41 and the interior metal sheet 38 directly contact, this just makes the negative calorific value that passes to refrigerating chamber inside increase.

Claims

1, a kind ofly comprise a bottom refrigerating chamber, the diffusioning-absorption refrigerator of a top refrigerating chamber and a spread-absorbing type refrigeration unit, the i.e. sub-assembly of forming by two parts, one of them parts can be contained in another parts, these two parts are the osteomeres in a hexahedron housing and the housing of can packing into hermetically, above-mentioned housing has one and goes up horizontal cross member, be divided into the refrigerating chamber and the refrigerating chamber of back opening, described osteomere comprises what a refrigeration unit and one were made by heat-insulating material, but the vertical back plate of closure casing rear aperture, should extend forward by an adiabatic box part by vertical back plate, this box part places the last horizontal wall by housing, in parallel transverse member and two the formed spaces of vertical sidewall, said opening adiabatic box part forward is by the top of above-mentioned vertical back plate, vertical sidewalls of going up horizontal wall and two downward extensions form, vertical back plate extends to the whole height of housing substantially, opening bottom refrigerating chamber is backwards closed by the bottom of the adiabatic vertical back plate that evaporimeter is housed down, the vertical sidewall that it is characterized in that adiabatic box part draws in forward each other slightly, equal angular is also drawn on the top of the vertical sidewall inner surface of housing in, equally, the upper wall of box part from the top to bottom, have slightly from back to front a bit, the inner surface of horizontal wall or lower surface are also done corresponding inclination on the housing, cause above-mentioned box part can pack in the top refrigerating chamber of housing with being adjacent to.

2, refrigerator according to claim 1, it is characterized in that: box part is in lower openings, the lower surface of the vertical sidewall of box has a bit to tilt from the bottom up, from back to front slightly, so that moved by formed gathering sill in cross member upper surface both sides or ramp in the upper edge, position, the gradient of above-mentioned gathering sill is identical with the gradient of the lower surface of box part sidewall.

3, refrigerator according to claim 1 is characterized in that: the pipeline of evaporimeter extends with the inboard on plate top, adiabatic vertical back at two vertical sidewalls of box part on the formation.

4, refrigerator according to claim 3 is characterized in that: the pipeline of evaporimeter also extends in the horizontal wall on box part on the formation.

5, refrigerator according to claim 1, it is characterized in that: the bottom of box part is sealed by a following horizontal wall that is placed on above the housing cross member, the thickness of this box part lower wall and cross member all should reduce, and makes that their gross thickness of two are consistent substantially with the thickness of each adiabatic wall of refrigerator.

6, refrigerator according to claim 5 is characterized in that: the pipeline of evaporimeter also extends in the following horizontal wall of box part on the formation.

7, refrigerator according to claim 1, it is characterized in that: two vertical side of gripper shoe are slightly inwardly drawn in, so that be close to formed by housing vertical sidewall inner surface rear portion, as to have identical gradient supporting surface, equally, the lower horizontal plane of gripper shoe has a bit to tilt from lower to upper, back to front slightly, so that be pressed on upper surface rearward part, that have the identical gradient of housing below, this below rearward part has constituted the not only shallow but also short end of housing.

8, refrigerator according to claim 1, it is characterized in that: in the adiabatic wall inside of box part, with a kind of by the good material of heat conductivility, the hard liner that is pressed into as aluminium flake and form refrigerating chamber, this liner is used as the inner surface of each adiabatic wall, and protruding inwards rib is arranged, and rib is along the evaporator pipeline setting, these ribs to convex have formed groove outwardly, and partly pipe is placed and is fixed in these grooves.