CN1153031C

CN1153031C - Refrigerating appts., in particular domestic refrigerating appts.

Info

Publication number: CN1153031C
Application number: CNB961991488A
Authority: CN
Inventors: A・鲁普; A·鲁普
Original assignee: Bsh博施及西门子家用器具有限公司
Current assignee: BSH Hausgeraete GmbH
Priority date: 1995-12-20
Filing date: 1996-10-18
Publication date: 2004-06-09
Anticipated expiration: 2016-10-18
Also published as: EP0868638B1; BR9612139A; CN1205767A; DE59607284D1; WO1997022841A1; TR199800993T2; EP0868638A1; DE19547744A1

Abstract

The invention relates to refrigerating apparatus, in particular domestic refrigerating apparatus, such cooling or freezing apparatus, which has at least one refrigerating circuit with a dryer cartridge (24) arranged therein. In the cartridge housing (30) there is arranged a filter (31) in the form of sintered material through which refrigerant flows. The peripheral edges of said filter (31) in the form of sintered material is surrounded by a frame-like enclosure (32).

Description

Domestic refrigerating appts

The present invention relates to a kind of refrigeration plant especially domestic refrigerating appts such as cooling device or refrigerating equipment, it has a refrigerating circuit at least, and a dehydrating cartridge is housed in the loop, in the shell of tube the filter of flowing through refrigerant that is made of agglomerated material is housed.

In the family expenses refrigeration plant, prior art is to establish dehydrating cartridge in its refrigerating circuit, and it is located at after the condenser in series and drier is housed, so that absorb moisture in the refrigerant that circulates refrigerating circuit.The residue that produces when avoiding impurity in the drier or dehydrating cartridge machining enters refrigerant cycle, and perhaps can block a flow controller passage that is located at before the evaporimeter as expansion valve there, establish a filter in the inner direction of dehydrating cartridge along the refrigerant that is promoted by compressor, it is designed to be fixed on the steel wire filter in the drier body under most situations, can not stop dirt to be invaded in the refrigerating circuit in many cases.In order to improve the filter effect of the filter of using in dehydrating cartridge, people transfer to and use the so-called sintering of the filter that is made of agglomerated material to filter to replace the steel wire filter.They in cross section inside that dehydrating cartridge flows through refrigerant by suitable with the thickness of its filter at least substantially chipless the crimping that is formed in the barrel fix.When fixing and the filter of assembling sintering, because the fragility of sintering filter must aim at the mark very exactly, filter is had certain assembly building unoccupied place insert in the cross section of dehydrating cartridge perforation, and, be controlled to be during crimping in processing the sintering filter is preserved from fixation procedure.In order to satisfy these requirements, must have complicated and thereby expensive assembly tool and setting tool.

The objective of the invention is, improve the filter that constitutes by agglomerated material, to avoid the shortcoming of prior art when the filter that agglomerated material is constituted is installed and is fixed in the dehydrating cartridge by simple structural measure.

Technical scheme by this purpose of the present invention is a kind of domestic refrigerating appts, it has at least one refrigerating circuit, one dehydrating cartridge is housed in this refrigerating circuit, in this shell, be provided with the filter of the flow through refrigerant of making by agglomerated material, the periphery of this filter is centered on by the overcoat of a frame-like, filter is fixed in the flow cross of dehydrating cartridge with this overcoat, it is characterized by: this overcoat has a baffle ring and a retainer ring, and this filter shape matches and frictional force is fixed between this baffle ring and this retainer ring with connecting.

Adopt structure by filter of the present invention, prevented that on the one hand filter from having the marginal zone of brittle fracture danger to be subjected to influencing the destruction of filter effect at it, be connected by the frictional force between the tube wall of overcoat and the cross-sectional boundaries that constitutes the dehydrating cartridge perforation on the other hand, filter also can be fixed in the dehydrating cartridge by being pressed into simply with the expense of few tool technique aspect simultaneously, so avoided being used to operate the extraordinary instrument of sintering filter on the one hand, avoided on the other hand being used for sintering is filtered the extraordinary instrument that is fixed in the dehydrating cartridge.In addition; by the overcoat of protectiveness ground round the periphery of filter; the assembling possibility of the tolerance state that the cross section that provides a kind of adaptation dehydrating cartridge that obtains by means of its frictional force connection to connect is different; by means of this assembling possibility; because assembling difficulty that corresponding tolerance state causes and relevant therewith sometimes restricted filter effect are avoided all the time reliably.In addition, the structure by filter of the present invention can also adopt the dehydrating cartridge of other the material systems that can be out of shape in a small amount, for example brass or steel except using dehydrating cartridge made of copper so far.

According to the most preferred embodiment of object of the present invention regulation, overcoat is designed to the charging cover that at least one side is provided with baffle ring, and filter abuts at least basically on the baffle ring that shape matches and/or frictional force is fixed in charging covers with connecting.

Adopt this overcoat, have the filter of brittle fracture danger can be under the situation that does not have the power effect easy especially and lag apace at its edge, filter by baffle ring under need not the situation of addition thereto just basically accurate positioning and thereby reliable operation be installed in the overcoat.

Press following a kind of most preferred embodiment regulation of content of the present invention, filter fixing in the charging cover realizes that by a retainer ring that is located on the cover this fixedly is particularly advantageous for filter.

By following a kind of optimal design regulation of content of the present invention, the retainer ring that is used for fixing filter is made by a retainer plate that is connected with the charging cover.

By the filter of inlaying in this way, even under the situation of mass production, when high functional reliability was arranged, filter can be subjected to special protection and thereby operation with preventing brittle fracture.

By another kind of alternative design code of content of the present invention, the retainer ring that is used for fixing filter is made by the jacket wall chipless ground distortion that is positioned at charging cover baffle ring relative position.

Therefore the present invention proposes a kind of overcoat that is used to filter that is appropriate to mass production especially, the joint member of the increase production cost that it can need not to add and add be connected measure homogenous material manufacturing, so cancelled time-consuming seam operation.

Particularly advantageously for the manufacturing of the overcoat of mass production be, by the regulation of another kind of alternative embodiment of content of the present invention, filter outer apply mechanically a kind of can be by the material manufacturing in its silhouette edge of embedding of die casting or casting technique processing.

In order to make the overcoat that is used to filter especially easily, by last a kind of most preferred embodiment regulation of content of the present invention, filter has circular cross section, is enclosed within on the profile of filter shape outward and extends suitably.

Embodiment by means of reduced representation in the accompanying drawings illustrates the present invention below.

Wherein:

Fig. 1 is at the domestic refrigerating appts of two temperature of expression from the stereogram of seeing previously, and the stacked up and down rack in the mutual heat insulation chamber that its temperature is different can be closed with independent door;

Fig. 2 represents to be used for remaining on the refrigeration machine that temperature adopted of two warm formula refrigeration plant racks and to be located at compressor dehydrating cartridge afterwards in series circuit in rough schematic view;

Fig. 3 represents dehydrating cartridge by actual basically dimension scale, and biopsy cavity marker devices has a filter by agglomerated material system that is mounted in it; And

Fig. 4 is the profile of the filter of different forms of implementation by filter represented among the present invention and Fig. 3.

Fig. 1 has represented domestic refrigerating appts 10, and its heat insulation housing 11 is provided with the

door

12 and 13 that two fans are contained on the housing and can open separately.Can be near the further mutual heat insulation storage cabinet of expression not among the different figure of temperature by door 12 with 13, the temperature of cabinet is by means of refrigeration machine 14 maintenances.

As especially as seen from Figure 2, refrigeration machine 14 has two cryogen circuit I and II, and they can add refrigerant by 3/2 an automatically controlled way solenoid valve 15.In this its each exit, automatically controlled magnetic valve 15 downstreams, respectively establish a refrigerant tube and magnetic valve 15 mobile flow controllers 16 or 17 that are communicated with by not representing among the figure, these two flow controllers all are designed to the capillary form of spiral wound.Among the figure of each flow controller 16 or 17 outlet side and refrigerant evaporimeter 18 or 19 not the injection phase of expression flow and be communicated with refrigerant evaporimeter 18 and 19 parallel connections mutually.Two evaporimeters 18 can merge with public suction line 21 by refrigerant tube with 19 outlet and be connected, and the latter is flowed with the suction side of coolant compressor 22 and is communicated with.The outlet side of compressor 22 is connected on the condenser 23, and condenser itself is connected for the drier of dehydrating cartridge 24 again with in form.The dehydrating cartridge 24 that outlet side links to each other with magnetic valve 15 has a tubular housing basically with cylindrical cross section, and its tube wall 25 is shaped by chipless at its two ends, for example in form for extending into the shape of

adapter

26 or 27 downwards.Taking near 27, pass through the flow direction of dehydrating cartridge 24 against refrigerant by the symbolic expression of arrow, in the tube chamber 28 that centers on by its tube wall 25, be provided with a filter body 30 as contaminant filter, the sealing of its liquid is fixed on the pipe internal surface of dehydrating cartridge 24 with frictional force with being connected.Filter body 30 comprises one by sintered bronze Sica-Grad for example, the filter 31 that B100 constitutes, the periphery of filter 31 is followed its peripheral overcoat 32 by a contour shape strictness and is surrounded, jacketing frame shape ground around and fixingly filter 31.In the present embodiment, overcoat 32 is made by charging cover 33, the latter constitutes with the metal hollow cylinder of monoblock type plastically deformable, and hollow cylinder round filter, and has a baffle ring 34 of making towards the preformed knuckle of its centerline direction by its outer surface at an one end face with its inner surface.Basically the filter 31 that is not contained in the hollow cylinder abuts on this baffle ring to determine its correct rigging position with an one end face with stressing.In order to filter the 31 tube chamber inside that are fixed on charging cover 33, the tube wall chipless formula distortion that the height that covers hyperfiltration with feeding stretches out, to form a retainer ring 35, it with the retaining of charging cover not 34 and tube outer wall constitute overcoat 32, overcoat both shape match with frictional force fasten with being connected the filter 31, again liquid hermetically round the filter 31.Be applicable to that but the material of making overcoat 32 also has the plastics of resistant to elevated temperatures plastically deformable and can cast and the metal of die casting except that the metal of plastically deformable.

According to second kind of embodiment of the filter body 40 that is used as contaminant filter shown in Figure 4, its filter 41 is matched by dimeric overcoat 42 frame-like shapes and centers on frictional force with being connected.Be fastened on the overcoat 42 of the liquid sealing on the dehydrating cartridge inside pipe wall by means of frictional force, there is first to be designed to the charging cover 43 of hollow cylinder, the same with charging cover 33, it is shaped on the knuckle 44 of its centerline direction on one day at an one end face, and the inner surface of knuckle 44 is as the stop surface of filter body 41.For fixing filter 41, be provided with second stationary bushing 45, it is designed to hollow cylinder as charging cover 43, and its tube wall has a knuckle 46 towards its centerline direction.The diameter of stationary bushing 45 should be designed to make it insert in the charging cover 43, and it is reclining to feed with its outer surface and is covering 43 pipe internal surface at the insertion state.Be fixed on charging cover 43 inside in order to filter 41, stationary bushing 45 is put in charging cover 43 inside, this moment, the outer surface of the knuckle on stationary bushing 45 played filter 41 bearing-surfaces.In order to make overcoat 42, charging cover 43 and stationary bushing 45 match and/or frictional force is connected ground for example by welding or by shrinking connection in the mutual shape in the tube wall district of their mating reactions, by these two sleeve pipes 43 and 45 be connected, made on filter 41 and profile with it shape and matched and is connected ground with frictional force round the overcoat 42 of filtering 41, overcoat liquid surrounds hermetically filters 41.As for overcoat 32, except the metal of plastically deformable, the high-temperature resistance plastice of plastically deformable can be used for making the overcoat 42, though it is also conceivable that the employing plastic deformation ability metal of welding processing well.

Claims

1. domestic refrigerating appts, it has at least one refrigerating circuit (I, II), one dehydrating cartridge (24) is housed in this refrigerating circuit, in this shell, be provided with the filter (31 of the flow through refrigerant of making by agglomerated material, 41), the periphery of this filter is centered on by the overcoat of a frame-like (32,42), to filter (31 with this overcoat, 41) be fixed in the flow cross of dehydrating cartridge, it is characterized by: this overcoat (32,42) has a baffle ring (34,44) and a retainer ring (35,46), this filter (31,41) shape matches and frictional force is fixed between this baffle ring and this retainer ring with connecting.

2. according to the described domestic refrigerating appts of claim 1, it is characterized by: overcoat (32,42) is designed to a charging cover (43) that is provided with baffle ring (34,44).

3. according to the described domestic refrigerating appts of claim 2, it is characterized by: filter (31,41) fixedly is to realize by the retainer ring (35,46) that is located on the cover in charging cover (33,43).

4. according to the described domestic refrigerating appts of claim 3, it is characterized by: the retainer ring (46) that is used for fixing filter (41) is made by a stationary bushing (45) that is connected with charging cover (43).

5. according to the described domestic refrigerating appts of claim 3, it is characterized by: the retainer ring (35) that is used for fixing filter (31) is to be made through the chipless distortion by the end face of baffle ring (34) relative position that is positioned at charging cover (33).

6. according to the described domestic refrigerating appts of claim 1, it is characterized by: the overcoat (32,42) of filter (31,41) can be made by the material in its silhouette edge of embedding of die casting or casting technique processing with a kind of.

7. according to the described domestic refrigerating appts of one of claim 1 to 6, it is characterized by: filter (31,41) has circular cross section, overcoat (32,42) at least basically contour shape match is connected with frictional force round the profile of filtering.

8. according to the described domestic refrigerating appts of claim 1, it is characterized by: filter (31,41) is surrounded by overcoat (32,42) liquid hermetically at its periphery.