CN103201570A

CN103201570A - Evaporator

Info

Publication number: CN103201570A
Application number: CN2011800537783A
Authority: CN
Inventors: R·普拉德尔; D·拉齐沃莱克; B·赛特
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2010-11-08
Filing date: 2011-10-26
Publication date: 2013-07-10
Anticipated expiration: 2031-10-26
Also published as: DE102010043542A1; EP2638337B1; EP2638337A2; WO2012062581A2; WO2012062581A3; ES2529667T3; CN103201570B

Abstract

The invention relates to an evaporator (1) for a refrigeration unit having a pipe, through which a refrigerant can flow and which has an inlet opening (5) and an outlet opening (7), wherein the pipe has U-shaped baffles with limbs comprising pipe sections (10, 10', 16, 16') which extend parallel to one another and rectilinearly, and wherein the pipe is mounted in passage openings (30) of plate fins (20) which are oriented perpendicularly with respect to the rectilinear pipe sections (10, 10'). A defrost heating means (50) is provided along at least part of the rectilinear pipe sections (10, 10'), and the defrost heating means (50) is guided and mounted in the passage openings (30) of the plate fins (20).

Description

Evaporimeter

The present invention relates to a kind of for refrigerating appliance, the evaporimeter of family expenses refrigerating appliance especially, have: one have inlet opening and flow out opening, can cooled dose of pipe of flowing through, wherein, this pipe has the revolution of U-shaped, the revolution of this U-shaped has by the pipe leg that is parallel to each other and linearly extended pipeline section forms, and wherein, this pipe is supported in the pass through openings of some thin slices.

According to cooling principle, cooling apparatus and refrigeration appliance usually comprise the evaporimeter for expansion cooling medium and refrigerated compartment.This evaporimeter tends to freeze.In frostless utensil, the local energy on the zone of tending to freeze of evaporimeter is supplied with and is caused defrosting, and does not make whole refrigerating chamber reach the defrosting temperature simultaneously.Corresponding defroster is known by DE 11 2,004 002 258 T5, and a Defrost heater is installed in the through hole of muscle of evaporimeter in this defroster.DE 31 45 445 illustrates another kind of defroster heating, during this defroster heating and heat exchange muscle are in and contact.

The shortcoming of known solution at first is the installation of heater on evaporimeter, because there is a certain spacing here in known solution.Evaporimeter also should be able to simply and inexpensively be made in manufacture process and heater should can easily be taken off under repair.

The evaporimeter that is used for the refrigerating appliance of the described type of beginning, this task is solving thus, that is and, a Defrost heater is guided and supports in the perforation perforate of thin slice along at least a portion setting and this Defrost heater of straight line pipeline section.

According to the present invention, a kind of evaporimeter for refrigerating appliance is provided, have one and have inlet opening and flow out pipe opening, the MEDIA FLOW that can be cooled warp.At this, this pipe has the revolution of U-shaped, and the revolution of this U-shaped has by the pipe leg that is parallel to each other and linearly extended pipeline section forms.This piping support in the pass through openings of some thin slices that point to perpendicular to described straight line pipeline section and a defroster heating at least a portion setting of straight line pipeline section and the perforation perforate of this Defrost heater at thin slice, be guided and support.Thus, making heater be directly adjacent to this pipe and this two parts is that pass through openings keeps by a guider all, and this machinery that significantly reduces supporting expends.And have the space on the embodiment of the heater that separates compare, also can save heat-conducting plate separately by this structure.

Further, this defroster heating can take off and/or load onto from evaporimeter on one in described rotating side.Therefore, defroster heating can assemble simply in process of production and also can easily be pulled down for the purpose of keeping in repair.

Defroster heating preferably has the revolution of at least one U-shaped, and the revolution of this U-shaped is extended and extended at another pipe leg of the second radial direction upper edge pipe of pipe at a pipe leg of the first radial direction upper edge pipe of pipe corresponding to the revolution of a U-shaped of pipe and this defroster heating.At this, second radial direction and first radial direction have the difference of at least 90 degree.Can realize a kind of profile of pass through openings by this structure (also can describe in detail later on), even when defroster heating is not imported into (this for example may occur during manufacture process), this profile also remains on this pipe its definite should having in the position.

Further preferably, second radial direction and first radial direction have the difference of 180 degree.Because the section of pipe heating device is positioned at respectively on the opposed side of cooling tube like this, the guiding of pipe in pass through openings is modified.In addition, defroster heating be positioned at pipe above or below situation under, dew flows out in the time of can be than neighbouring (in the horizontal direction) that roughly be positioned at pipe when it better.

Defroster heating especially returns the revolution that musical form ground has a plurality of U-shapeds, the revolution of these U-shapeds is corresponding to the revolution of the U-shaped of pipe, and defroster heating the pipe leg of the different radial direction upper edge of pipe straight line extend and the respectively adjacent pipe leg of these radial direction at pipe in be different.Thus, the guiding of pipe in pass through openings then improves by rotating a plurality of cycles always.

Further, defroster heating is resistive heating device, because this resistive heating device can and be saved ground, position and make and pack into little cost.

Defroster heating preferably returns has a plurality of U-shaped zigzag parts bently, and these U-shaped zigzag parts all are in the plane.This does not get rid of other zigzag part and is not in this plane where necessary.By this way, defroster heating is flat assembly, and this assembly can pile up in manufacture process well.Because defroster heating does not have king-sized bending stiffness, the shape that it does not have undue complexity is favourable.

Further, be provided with defroster heating according to the cooling medium stream straight line pipeline section adjacent with inlet opening, and be not provided with defroster heating according to the cooling medium stream straight line pipeline section adjacent with flowing out opening.Because confirm, just in time the pipeline section at input side especially freezes, and it is enough at these pipeline sections corresponding heater being installed.

Corresponding cooling apparatus and/or refrigeration appliance comprise that an evaporimeter and is used for activating defroster heating and thus to control device or the adjusting device of evaporimeter deicing.That is, provide a kind of frostless cooling apparatus and needn't be for deicing whole utensil be heated to temperature greater than 0 degree.

The method of making evaporator without frost has the work flow of a manufacturing vaporiser body, the pipeline section that the pipe of this vaporiser body has some revolutions and is parallel to each other and extends, and this pipe is held and is guided at its vpg connection by thin slice, and in an ensuing installation step, has revolution and the defroster heating of the section of extending of being parallel to each other is encased in the vaporiser body by the importing campaign along the direction of straight line pipeline section.Because pipe heating device is electric assembly, must be handled carefully and for fear of just this pipe heating device being connected with vaporiser body in ensuing procedure of processing in the damage on this pipe heating device.

By accompanying drawing content of the present invention and improvement project thereof are described in more detail below.Accompanying drawing illustrates:

Fig. 1 has the ball view of the evaporimeter of defroster heating,

Defroster heating before Fig. 2 is directed in the vaporiser body,

Fig. 3 imports the centre position of motion when assembling,

The vertical view of Fig. 4 thin slice and

Fig. 5 is to the alternate embodiment of Fig. 7 defroster heating with respect to the position of evaporator tube.

Fig. 1 illustrates a kind of evaporimeter, and this evaporimeter for example is used in the compressor cooling machine.In this cooling principle, by the compressor compresses cold-producing medium, heating and cooling agent thus.These heat are discharged in the environment by condenser.Subsequently, (liquid) cold-producing medium is in order to reduce pressure by flow controller guiding and release by this way.At this, cold-producing medium evaporation and generation evaporation are cold, and this evaporation is cold to be discharged in the surrounding medium by evaporimeter.This surrounding medium is generally the air in the space to be cooled, these air or be guided through evaporimeter according to convective principles or by ventilation blower.At last, cold-producing medium is carried again to compressor, finishes coolant circuit thus.According to Fig. 1, flowing of surrounding medium represented with arrow K.

Current, evaporimeter is implemented as tubular evaparator.Use the pipe that has inlet opening 5 and flow out opening 7 here.This pipe 2 has a plurality of zigzag parts or U-shaped revolution.At this, each U-shaped revolution comprises two pipe legs 10 and 10 ', and these pipe legs are implemented as straight line and pipeline section that be parallel to each other, and pivoted member 12 is positioned on their base portion.Under the simplest situation, this pivoted member can constitute by the bending of pipe.Alternatively, element that also can ground that separate, semicircle is crooked is connected with 10 ' and especially soldering with pipe leg 10.Because the two ends of pipe leg are correspondingly U-shaped ground revolution all, as a result of just produce a kind of form of the pipe leg layer side by side that is parallel to each other.At this, these pipe legs are not in the plane, but each second pipe leg upwards-namely according to Fig. 2 in amount that is equivalent to almost twice pipe diameter of Z direction dislocation.That is, two this layers are mutual so stacked, make that outflow opening 7 is adjacent with inlet opening 5.

In the zone of revolution 12, be provided with the thin slice 20 of coherent logical opening 25 and 30.When assembling evaporimeter 1, correspondingly the pipe 2 of bending moves to thin slice by the motion on the y direction.Thin slice is swan-neck 2 to be remained on it should have in the position and give that the evaporimeter opposing is impacted or the mechanical stability of vibration in the task in the packing into of evaporimeter.In addition, thin slice directly is in pipe and contacts, thereby good heat exchange is possible and the chilled surface of thin slice is used for cooling off air to be cooled like this.On the principle, it is just much of that respectively to have a thin slice for the reason of firmness in rotating two zones.But owing to improve heat transmission, (see figure 3) uses five to have the thin slice 20 that little spacing ground is placed abreast on the end forwardly.Structure is identical respectively for the thin slice at two ends.In addition, on the left side, namely in the zone that air-flow enters, have a plurality of other thin slices 15, these thin slices turn round to cool off by two U-shapeds, and, improve on the one hand from air to be cooled to vaporiser body the heat transmission and in addition also for reducing through flow velocity.

The pass through openings 25 on use top in according to the thin slice 20 of Fig. 4, the size of these pass through openings are determined like this, make the U-shaped revolution of pipe can pass their grafting.The pass through openings 30 of bottom also comprises for the rotating zone of interspersed U-shaped, but widens in different directions, thereby defroster heating can additionally be imported into by these pass through openings 30.Therefore, as by illustrated in fig. 3, the regional 54(of defroster heating 50 is on the Z direction) be in the top of corresponding pipeline section 10, and the zone 54 ' of defroster heating 50 is in the below of pipeline section 10 '.Pass through openings 25 and 30 is sealed around ground respectively.

By defroster heating is incorporated in the identical pass through openings 30 of thin slice 20 with corresponding pipeline section 10 and 10 ', make defroster heating directly abut on the corresponding pipeline section, this produces best defrosting effect.

Fig. 5 illustrates different flexible programs to Fig. 7, and defroster heating can abut in the corresponding U-shaped revolution of pipe in these flexible programs.These figure are from seeing shown in the y direction visual angle to the vaporiser body, and wherein, the interconnective circles that two bigger circle sections represent Guan Erxiao are cross sections of defroster heating.Fig. 6 representative is rotated about 30 degree according to the installation situation of main embodiment and at this, and here defroster heating abuts on linearly extended pipeline section 10 and 10 ' with different directions.Alternatively, a flexible program of pass through openings can be rectangle, thereby according to Fig. 5, pipe heating device abuts on the identical side of pipe.

The embodiment of Fig. 6 is favourable in manufacture process, in this manufacture process, at first pipe is plugged on thin slice, and for example soldering mutually in soaking pit subsequently.From the geometry of the pass through openings 30 of thin slice 20 as can be seen, by its shape, the revolution of the U-shaped of pipe is guided on directions X and Z direction well.In the embodiment of Fig. 5, though defroster heating also abuts on the pipe ideally, defroster heating can just be loaded into after soldering.This just means that in the embodiment of Fig. 5, pipe has certain interval in the Z direction when the time point of soldering, thereby can not guarantee this pipe is remained on should having on the position of it in no problem ground in manufacture process.Even without carry out from the thin slice to the pipe connection, as soldering, the conception of Fig. 6 and Fig. 7 also is favourable, because the vibration of pipe on directions X or Z direction absorbs by thin slice rather than absorbed by defroster heating, this defroster heating has flimsy plastic casing where necessary.

Another alternate embodiment of defroster heating is shown according to Fig. 7.In this case, thin slice has microscler pass through openings, and these pass through openings are complementary with the rotating outside dimension of pipe, have the part that the expansion section is used for the tubular type heater on the right side.Therefore crooked pipe is also being guided on directions X and Z direction during the manufacture process and before pipe heating device being incorporated in its position well.

List of reference signs

1 evaporimeter

2 pipes

5 inlet openings

7 flow out opening

The straight line pipeline section of 10,10 ' inlet opening side

12 revolutions

16,16 ' flows out the straight line pipeline section of open side

20 thin slices

The pass through openings on 25 tops

30 (bottom) pass through openings

50 defroster heatings

54,54 ' straightway

56 revolutions.

Claims

1. be used for refrigerating appliance, especially the evaporimeter of family expenses refrigerating appliance (1), have: one has inlet opening (5) and flows out opening (7), can cooled dose of pipe of flowing through, wherein, this pipe has the revolution of some U-shapeds, the revolution of these U-shapeds has by being parallel to each other and linearly extended pipeline section (10,10 ', 16,16 ') the pipe leg of Xing Chenging, and wherein, this pipe is supported in the pass through openings (30) of some thin slices (20), it is characterized in that, one defroster heating (50) is guided and supports in the perforation perforate (30) of described thin slice (20) along at least a portion setting and this Defrost heater (50) of described straight line pipeline section (10,10 ').

2. according to the evaporimeter (1) of claim 1, it is characterized in that described defroster heating (50) can take out and/or load onto from described evaporimeter (1) on one in the side of described revolution (12).

3. each evaporimeter (1) in requiring according to aforesaid right, it is characterized in that, described defroster heating (50) has the revolution (52) of at least one U-shaped, the revolution of this U-shaped is extended and is extended at another pipe leg (10 ') of the second radial direction upper edge pipe of pipe at the pipe leg (10) of first this pipe of radial direction upper edge of pipe corresponding to the revolution of a U-shaped of described pipe and this defroster heating (50), and described second radial direction has at least 90 difference of spending with described first radial direction.

4. according to the evaporimeter of claim 3, it is characterized in that described second radial direction and described first radial direction have the difference of 180 degree.

5. each evaporimeter (1) in requiring according to aforesaid right, it is characterized in that, described defroster heating returns the revolution (52) that musical form ground has a plurality of U-shapeds, the revolution of these U-shapeds is corresponding to the revolution of the U-shaped of described pipe, and this defroster heating the pipe leg of the different radial direction upper edge of this pipe straight line extend and adjacent pipe leg respectively at this pipe in these radial direction be different.

6. each evaporimeter (1) is characterized in that described defroster heating (50) is resistive heating device in requiring according to aforesaid right.

7. each evaporimeter (1) is characterized in that described defroster heating returns the zigzag part that has a plurality of U-shapeds bently in requiring according to aforesaid right, and the zigzag part of these U-shapeds all is in the plane.

8. each evaporimeter (1) in requiring according to aforesaid right, it is characterized in that, according to the cooling medium stream straight line pipeline section (10 adjacent with described inlet opening (5), 10 ') be provided with described defroster heating (50), be not provided with described defroster heating according to the cooling medium stream straight line pipeline section (16,16 ') adjacent with described outflow opening (7).

9. cooling apparatus and/or refrigeration appliance have one and are used for activating described defroster heating and thus to control device or the adjusting device of described evaporimeter deicing according to each evaporimeter (1) and in the aforesaid right requirement 1 to 8.

10. for the manufacture of the method for evaporator without frost (1), has the work flow of making vaporiser body, the pipeline section (10 that the pipe of this vaporiser body (2) has some revolutions and is parallel to each other and extends, 10 '), and this pipe keeps its shape by some thin slices (20) and is directed, it is characterized in that, in a following installation step, the section (54 that has described revolution (56) and be parallel to each other and extend, 54 ') defroster heating (50) passes through to be encased in the described vaporiser body along the importing campaign of the direction of the pipeline section (10,10 ') of straight line.