CN1711454A

CN1711454A - Heat exchanger for a refrigeration device

Info

Publication number: CN1711454A
Application number: CNA2003801030470A
Authority: CN
Inventors: 德特勒夫·切斯利克; 托尔斯滕·库斯尼克
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2002-11-11
Filing date: 2003-11-06
Publication date: 2005-12-21
Also published as: ATE385560T1; AU2003276269A1; DE10252345A1; DE50309133D1; EP1563236A1; ES2300656T3; EP1563236B1; PL375188A1; US20060124274A1; WO2004044507A1

Abstract

The invention relates to a heat exchanger for a refrigeration device comprising a base plate (1) and a tubular duct for coolant (2) fixed thereto and a pipe (7) arranged on the base plate and provided with a temperature sensor. The pipe (7) is fixed to the surface of the base plate with the aid of at least one brace (8) which is connected to the pipe (7) and encompasses the tubular duct (2).

Description

The heat exchanger that is used for refrigeration plant

The present invention relates to a kind of heat exchanger, it has a substrate and one and be fixed in pipeline on the substrate, that be used for cold-producing medium and a sleeve pipe that is used to hold temperature sensor that is provided with on substrate.The invention still further relates to a kind of refrigeration plant, it is equipped with an aforesaid heat exchanger.This heat exchanger can be used as condenser, particularly is used for refrigeration machine as vaporizer.

For the work of this vaporizer of temperature control ground adjusting, a temperature sensor is installed on vaporizer usually, it is connected with the thermostat regulating circuit.This thermostat regulating circuit is controlled the unlatching of refrigeration machine like this, and the temperature that makes temperature sensor record remains in the rated range.The temperature that is recorded by temperature sensor is compared with the actual temperature of vaporizer and is existed some systematic errors usually, and these errors make the sensor measured temperature produce the change of a hysteresis.These systematic errors depend on the thermal conductivity of vaporizer in the temperature sensor heat transfer process in addition, also depend on the distance of temperature sensor to the refrigerant tubing of vaporizer.

For the heat exchanger that guarantees to produce in batches has unified adjusting function, when vaporizer was installed in the refrigeration plant, the sleeve pipe that is provided for holding temperature sensor must have the identical position of refrigerant tubing of extending with respect to along the vaporizer plate for each such vaporizer.

Connect in (Rollbond)-vaporizer in roll extrusion, guaranteed the reproducible location that sleeve pipe distributes with respect to cold-producing medium organ pipe road with plain mode, its mode is, the passage that coolant channel and are used for holding temperature sensor is come out by a compacting from two plates to be interfixed of this vapour kind device jointly.

DE 39 28 471 C2 disclose such technology.Yet it is not suitable for pipe-plate-vaporizer, that is to say, is not suitable for such vaporizer, and it is made of the vaporizer plate, is fixed with the pipeline of cooling agent in its surface.

A kind of possibility is arranged in such vaporizer, in order to hold temperature sensor afterwards, a last passage bonds, this passage can be the passage of thin metal pipe or plastic tube form, yet the bonding process can not jointly be carried out with being installed in the operation of ooling channel, can not guarantee easily that so this passage is with respect to the reproducible location of refrigerant tubing and unified adjusting function.

It is another kind of that what form passage may be that an edge section of substrate is rolled into the passage that is used for temperature sensor.Make temperature sensor be fixed by this way with respect to the position of substrate, yet, it makes temperature sensor can only be positioned on the edge of substrate, that is to say in a zone, this zone is subjected to outside strong relatively interference heat affecting, and the temperature of this temperature sensor is only limited to the mean temperature that is used to infer substrate.

Task of the present invention is, provides a kind of heat exchanger that is used for refrigeration plant with pipe-plate technique, and its allows to realize with plain mode the reproducible location that holds sleeve pipe of temperature sensor, and does not need position measurement or adjustment.

This task solves by the heat exchanger with claim 1 feature, the sleeve pipe on the surface of vaporizer plate is fixed by the stull that at least one acts on the pipeline in this heat exchanger, the position of sleeve pipe is determined that accurately on the certain distance of distance pipeline, this distance is corresponding to the length of stull.Like this, for the vaporizer of making in batches for all, have identical stull length, the temperature sensor of installing in the sleeve pipe all is unified in the heating or the hysteresis aspect the cooling of measuring refrigerant tubing.

The installation of heat exchanger has been simplified, and its mode is that each stull has the clip section that is used to be clipped on the pipeline.This makes quick temporary fixedly the become possibility of sleeve pipe on substrate; Last fixing, particularly by cover layer or-that the carrying pipeline of film covered substrate and a side of sleeve pipe realize is last fixing, can carry out on the time afterwards.

Preferred first configuration is that sleeve pipe and at least one stull constitute integratedly, preferably by flat bar, are in particular the blanking formation of sheet metal form.

Preferred second configuration is that the stull conduct realizes with the parts that sleeve pipe separates, and is clipped on this sleeve pipe.Such stull can have first clamp section that is used to be clipped on the pipeline and the second clamp section that is used to be clamped on the sleeve pipe especially.

For fear of being fixed on sleeve pipe on the cooling pipe with respect to the inclination of ooling channel, at least two stulls that have been preferably ferrule configuration.

These two stulls can be extended with identical direction from sleeve pipe, be used for particularly being clamped in a pipeline section identical, that be parallel to the straight line of sleeve pipe extension, yet they also can extend with opposite direction from sleeve pipe, are used to be clamped in two of pipeline section different, that extend in sleeve pipe two sides.

For pipeline vertically on also fix the installation site of sleeve pipe, can stipulate that pipeline has a mark in the nip points of at least one stull.Such mark can be a groove or recess especially, its predetermined place at pipeline in the process that pipeline is fixed on the vaporizer plate is pressed into, and the clip section of stull can snap in wherein, prevents the slippage on the longitudinal direction of pipeline like this.

Pipeline and sleeve pipe simply mode are connected with the vaporizer plate by adhesive phase.

Preferably, pipeline and sleeve pipe are enclosed in the vaporizer plate be a side with by deformable material, the film that constitutes as pitch, plastic material or aluminium is between the opposing party.

Other feature and advantage of the present invention are below with reference to providing in the embodiment of the accompanying drawing explanation.Accompanying drawing illustrates:

Fig. 1 is according to the perspective view of the vaporizer of first scheme of the present invention;

Fig. 2 is along the cutaway view of Fig. 1 center line II-II;

Fig. 3 is installed in the perspective view of the sleeve pipe in the vaporizer among Fig. 1;

The view that is similar to Fig. 1 of the alternative plan of Fig. 4 vaporizer of the present invention;

Fig. 5 is along the cutaway view of Fig. 4 center line V-V;

The perspective view of the sleeve pipe that Fig. 6 uses in the scheme of Fig. 4; With

The perspective view of the flexible program of Fig. 7 Fig. 6 middle sleeve.

In Fig. 1, illustrate, be to constitute, bently on substrate be provided with the ooling channel 2 that the pipe that also is made of aluminium constitutes back-shapedly by the flat substrate 1 that aluminium sheet constitutes as the heat exchanger of the vaporizer that is used for refrigeration plant with perspective view.Substrate 1 and ooling channel 2 are covered by the fid bed of material 3, it for example by pitch, be used for regulating the mixture that additives of the machinability of the filler of the desired thermal capacity of the fid bed of material 3 and/or thermal conductivity and possible other influence layers 3 constitute and constitute.At this, can be in the share of layer 3 medium pitch less than the share of filler.The fid bed of material 3 also can as polyethylene, have corresponding filler in case of necessity without pitch by plastic material, or constitutes by strengthening the aluminium film.

Shown in the cross-sectional view of Fig. 2, the fid bed of material 3 extends to and enters wedge-shaped part 4, and they are in the both sides of the contact wire between ooling channel 2 and the substrate 1 and mainly contain the available heat conduction that helps between substrate 1 and the ooling channel 2 like this., the thickness that makes the fid bed of material 3 in these wedge-shaped parts 4 conducts for thereby minimizing and further improve heat, refrigerant tubing 2 has the oval-shaped cross section of doing flat, it for example can be obtained like this, promptly by be originally that circular ooling channel is located on the substrate 1 back or is flattened auxilliary on substrate during auxilliary establishing.

At the fid bed of material 3 and ooling channel 2 is that a side and substrate 1 are that the layer 5 that is made of heat adhesive is arranged between the opposing party, and it has much smaller thickness owing to comparing with the substrate 1 and the fid bed of material 3, so only illustrate with line in the drawings.

The passage 6 that is used for supporting temperature sensor is arranged on an intermediate space between two parallel sections of ooling channel 2, and parallel with these sections.Passage 6 constitutes by the sleeve pipe 7 by sheet blanking roll extrusion manufacturing, and sleeve pipe illustrates with perspective view with section with in Fig. 3 in Fig. 2.The sheet blanking that shaping processes sleeve pipe 7 has the shape of double T (or Greek alphabet Л), at this, the beam of these two T is made sleeve pipe 7 by roll extrusion, and its two legs constitute two stulls 8, they with sleeve pipe 7 with respect to a section of ooling channel 2 with fixed distance given in advance, and make sleeve pipe 7 be parallel to ooling channel.These stulls 8 have a rectilinear interlude 10 separately, it in the heat exchanger that installs attached on the thermal adhesive layer 5, and, these stulls have separately one with described interlude clip section 9 that be connected, inverted U-shaped, its two legs be clipped on the ooling channel 2 and at this by strain.This shape of sleeve pipe 7 make that it is can be when heat exchanger is installed predetermined with the length by interlude 10, with respect to the distance location of ooling channel 2, needn't take the measure taken a lot of trouble at this.Install and fix material layer 3 with in order to make immobilization material be connected before the heat hot adhesive phase 5 with substrate 1, clip section 9 is used for when assembling onboard temporarily fixed sleeving 7.

Grip sleeve 7 temporarily on ooling channel 2, an also available certainly independent stull 8 realizes.If among the width of so independent stull and Fig. 3 two of these stulls 8 mutually away from longitudinal edges between distance identical, sleeve pipe 7 can be the same with the precision that reaches with two stulls with respect to the precision of the positioned parallel of ooling channel 2 so.Yet preferably use two parallel stulls 8, because the fid bed of material 3 can be bonded on the thermal adhesive layer 5 in the intermediate space between two stulls 8.

In order also to determine the position of sleeve pipe 7 at the longitudinal direction of ooling channel 2, preferably on carrying a side of substrate 1, it is being pressed into two recesses (not shown go out) on the ooling channel, their width respectively equals the width of a stull 8, and the distance between them equals stull 8 distance each other.These two recesses can be used as and are used for the reference point that sleeve pipe is installed.

According to second configuration of Fig. 4-6 explanation heat exchanger of the present invention, Fig. 4-6 illustrates with the view that is similar to Fig. 1-3 separately.Also fix to clamp on ooling channel 2 at this sleeve pipe 7, yet two stulls 8 are initial respectively with opposite direction extension by the sleeve pipe place, and act on two sections parallel to each other of ooling channel 2 by two stulls.Have the same in structure and first configuration of stull 8 of interlude 10 and clip section 9.Stoped simultaneously by the clamping on the parallel section of two of cooling pipe 2, fixing bonding before when substrate 1 is tumbled sleeve pipe 7 in assembling process, unclamp again.

One that figure 7 illustrates this second configuration becomes example.At this, what the configuration of describing with the front was different is, sleeve pipe 7 and stull 8 are not integrally curved by thin plate, but sleeve pipe is made of a pipe fitting 11, this pipe fitting is pressed and is fixed to plate 1 by a spring lath 12, constitutes these two stulls 8 that act on the ooling channel 2 on this spring lath.

The length of sleeve pipe in all configurations according to waiting that the length that is contained in the temperature sensor in this sleeve pipe determines; It is generally about 160mm.

Being assembled in three above-mentioned configurations of heat exchanger also is the same to a great extent, sleeve pipe be fixed be clamped on the ooling channel after, in the configuration that constitutes by plate 1, ooling channel 2 and sleeve pipe 7, cover a film, so that constitute the fid bed of material 3.By means of a drift, in this drift, constitute groove corresponding to the extension of the ooling channel on plate 12 and the shape of sleeve pipe 7, be pressed in this film on the thermal adhesive layer 5 and heat simultaneously, thereby with the interlude 10 of heat of activation adhesive and adhering film and stull.When the deliquescing and when having enough thickness under the activation temperature of thermal adhesive layer 5 of the material of film, can on film, apply a static pressure pressure in addition, get in the wedge-shaped part 4 between ooling channel 2 and the plate 1 with the material that impels film.For temperature sensor being installed in the sleeve pipe, it is just passable to cut off the fid bed of material 3 at an end place of sleeve pipe; Yet also can use a drift in order to compress film, it is by moulding like this, and promptly it disconnects film on an end of sleeve pipe.

Claims

1, a kind of heat exchanger that is used for refrigeration plant, it has a substrate (1), one at the pipeline that is used for cold-producing medium (2) and a sleeve pipe (7 that is used to hold temperature sensor of settling fixing on the substrate on substrate, 11), it is characterized in that, this sleeve pipe (7,11) fixing by at least one stull (8) on the surface of substrate, this stull and this sleeve pipe (7,11) connect and are clamped on the pipeline (2).

According to the heat exchanger of claim 1, it is characterized in that 2, each stull (8) has a clip section (9) that is used for going up at pipeline (2) clamping.

According to the heat exchanger of one of aforesaid right requirement, it is characterized in that 3, sleeve pipe (7) and described at least one stull (8) are that integral body constitutes.

According to the heat exchanger of claim 3, it is characterized in that 4, sleeve pipe (7) and this at least one stull (8) are shaped by the blanking of flat bar.

5, according to the heat exchanger of claim 4, it is characterized in that, the shaping of the nothing cutting of sleeve pipe (7) by flat bar, particularly make by roll extrusion.

According to the heat exchanger of claim 4 or 5, it is characterized in that 6, flat bar is a sheet metal.

According to the heat exchanger of claim 1 or 2, it is characterized in that 7, stull (8) is clamped on the sleeve pipe (11).

According to the heat exchanger of one of aforesaid right requirement, it is characterized in that 8, it has at least two stulls (8) for this sleeve pipe (7,11) configuration.

9, heat exchanger according to Claim 8 is characterized in that, these two stulls (8) are risen to identical direction by sleeve pipe (7,11) extends.

10, heat exchanger according to Claim 8 is characterized in that, these two stulls (8) rise with opposite direction from sleeve pipe (7,11) extends.

11, according to the heat exchanger of one of aforesaid right requirement, it is characterized in that described pipeline has mark at the application point place of at least one stull.

According to the heat exchanger of one of aforesaid right requirement, it is characterized in that 12, pipeline (2) and sleeve pipe (7,11) are connected with substrate (1) by adhesive phase (5).

13, according to the heat exchanger of one of aforesaid right requirement, it is characterized in that pipeline (2) between substrate (1) and film and sleeve pipe (7,11) are surrounded by deformable material (3).

According to the heat exchanger of claim 13, it is characterized in that 14, film constitutes by pitch, plastic material or aluminium or based at least a mixture of these materials.

15, a kind of refrigeration plant, it has the heat exchanger according to one of aforesaid right requirement.