CN103649656A

CN103649656A - Structure for attaching thermosensor element to air conditioning apparatus

Info

Publication number: CN103649656A
Application number: CN201280035219.4A
Authority: CN
Inventors: 浅地野衣
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2011-08-01
Filing date: 2012-07-11
Publication date: 2014-03-19
Anticipated expiration: 2032-07-11
Also published as: CN103649656B; WO2013018516A1; JP5509160B2; JP2013032862A

Abstract

A heat exchanger (1) is provided with: two vertical header pipes (2, 3); a plurality of horizontal flat tubes (4) that connect the header pipes to each other; and a plurality of fins (6) that are attached to the flat surfaces of the flat tubes. A thermosensor element holder (20) that holds a thermosensor element (15) is attached to the heat exchanger. The thermosensor element holder holds the thermosensor element (15) by sandwiching the thermosensor element between a main body section (21) and a cover section (22) connected to the main body section by means of a thin hinge section (23). The main body section is provided with a holding section (24) that holds the header pipe (3) between the adjacent flat tubes. The thermosensor element holder connected to the header pipe by means of the holding section has a protruding section (30) in contact with the inner surface of a housing (11) of an outdoor unit (10) of an air conditioner, consequently, the thermosensor element holder is prevented from rotating with the holding section as a supporting point.

Description

For temperature-sensitive element is set up to the structure to air conditioner

Technical field

The present invention relates to for temperature-sensitive element is set up to the structure with the air conditioner of parallel flow heat exchanger.

Background technology

Parallel flow heat exchanger is widely used in for example vehicle air and regulates machine and building with in the outdoor unit of air conditioner.Parallel flow heat exchanger has a plurality of flat tubes that are arranged between a plurality of house stewards, a plurality of coolant channels in each flat tube inside are all connected with house steward's inside, and between flat tube, are furnished with such as fin such as corrugated fins (corrugated fin).

In air conditioner, in order to carry out automatic temperature-adjusting control, conventionally on heat exchanger, be furnished with such as temperature-sensitive elements such as thermistors (thermistor).Refer to the example in the patent documentation 1 to 4 of listing below.

Patent documentation 1 discloses the outdoor unit of air conditioner.In this outdoor unit, be integrally formed and be useful on the fixedly thermistor holding parts of thermistor with grill-protected (protective grid) for the protection of heat exchanger, this thermistor is used for measuring outside air temperature.

Patent documentation 2 has mentioned how thermistor being held in the outdoor unit of air conditioner.In this outdoor unit, outside air temperature thermistor is being kept by outside air temperature thermistor support.Outside air temperature thermistor support has: for the claw (claw) of shell interlock with forming the air inlet of outdoor unit; For keeping the retention tab (holding piece) of the lead-in wire of outside air temperature thermistor; And for the protection of the wall of outside air temperature thermistor.

Patent documentation 3 discloses the outdoor unit of air conditioner, wherein, forms and is useful on the grill-protected of protection heat exchanger and for thermistor holding parts fixing and protection thermistor, this thermistor is for sensing outside air temperature.

Patent documentation 4 discloses the outdoor unit of air conditioner, wherein, is formed with continuously accommodation section with a part for motor erecting bed, and this accommodation section holds the thermistor for sensing outside air temperature between heat exchanger and motor erecting bed.

Citing document list

Patent documentation

Patent documentation 1: Japanese Patent Application Laid-Open No.2003-130397

Patent documentation 2: Japanese Patent Application Laid-Open No.2005-69587

Patent documentation 3: Japanese Patent Application Laid-Open No.2003-185187

Patent documentation 4: Japanese Patent Application Laid-Open No.2003-185191

Summary of the invention

Problem to be solved by this invention

The object of the invention is: by using the distinctive structure of parallel flow heat exchanger, easily temperature-sensitive element is set up to having in the air conditioner of parallel flow heat exchanger.

The technical scheme of dealing with problems

The invention provides a kind of for temperature-sensitive element being set up to the structure to air conditioner, this structure is constructed as follows: described air conditioner is provided with parallel flow heat exchanger, a plurality of fin of the flat horizontal surface that described heat exchanger comprises two house stewards, a plurality of flat tubes that described two house stewards are coupled together and is mounted to described flat tube; For keeping the temperature-sensitive element support of described temperature-sensitive element to be set up to described heat exchanger; Described temperature-sensitive element support has clamping part (gripper), and described clamping part for clamping described two house stewards' a house steward between adjacent described flat tube; And the inner surface of the described temperature-sensitive element support that utilizes described clamping part and be incorporated in to a described house steward by the housing with described air conditioner contacts to prevent that described temperature-sensitive element support from take described clamping part and rotating as fulcrum.

Above-mentioned, for temperature-sensitive element being set up to the structure to air conditioner, preferably, on described temperature-sensitive element support, be formed with the protuberance contacting with the described inner surface of described housing.

Above-mentioned, for temperature-sensitive element being set up to the structure to air conditioner, preferably, on described temperature-sensitive element support, in the position away from described clamping part, be formed with the protuberance of the buffer (bumper) serving as for described heat exchanger.

Above-mentioned, for temperature-sensitive element being set up to the structure to air conditioner, preferably, described clamping part clamps this house steward near a described house steward's center.

Above-mentioned for temperature-sensitive element being set up to the structure to air conditioner, preferably, described temperature-sensitive element support has cap (lid), described cap utilizes hinge and is incorporated in to the main part that is formed with described clamping part, described temperature-sensitive element support is by being clipped in described temperature-sensitive element between described main part and described cap and keeping described temperature-sensitive element, described temperature-sensitive element support has and is formed at described main part and the described cap passage in each, and described passage and the location overlap that is equipped with the lead-in wire of described temperature-sensitive element.

Beneficial effect of the present invention

According to the present invention, temperature-sensitive element is set up to heat exchanger by temperature-sensitive element support, and described temperature-sensitive element support is provided with clamping part, and this clamping part is clamping a house steward in two house stewards between adjacent flat tube.Therefore,, by using some parts (being house steward and the flat tube of parallel flow heat exchanger), described temperature-sensitive element can easily be set up under the prerequisite of not using instrument.Therefore described clamping part is installed between described flat tube, even and when described heat exchanger vibrates, also can prevent described temperature-sensitive element support being axially subjected to displacement along described house steward.In addition, once described clamping part is clamping described house steward, described temperature-sensitive element support just contacts with the inner surface of the housing of air conditioner, thereby has prevented that described temperature-sensitive element support from take described clamping part and rotating as fulcrum.Therefore, can do not use special fixed component and and unpainful prerequisite under, temperature-sensitive element support is fixed on to pre-position.

Accompanying drawing explanation

Fig. 1 is the structural representation of side-flow type (side-flow type) parallel flow heat exchanger;

Fig. 2 is the sectional view along the line II-II in Fig. 1;

Fig. 3 has implemented the horizontal sectional view of outdoor unit that temperature-sensitive element of the present invention is set up the air conditioner of structure therein;

Fig. 4 is at the local amplification sectional view of setting up the part place of temperature-sensitive element;

Fig. 5 is the front view of cap and the temperature-sensitive element support of main part in open mode; And

Fig. 6 is the side view of cap and the temperature-sensitive element support of main part in open mode.

The specific embodiment

Fig. 1 shows the basic structure of parallel flow heat exchanger.Parallel flow heat exchanger shown in Fig. 1 is side-flow type.In Fig. 1, the upside of paper is the upside of heat exchanger, and the downside of paper is the downside of heat exchanger.

Parallel flow heat exchanger 1 is provided with two house stewards 2 vertically and 3 and the flat tube 4 that is arranged in a plurality of along continuous straight runs between these two house

stewards.House steward

2 and 3 is arranging abreast in mode separated by a distance in the horizontal direction.Flat tube 4 is vertically being arranged side by side according to preset space length.When in fact heat exchanger 1 being assembled in product, can be by the arbitrarily angled heat exchanger 1 of installing that is suitable for this design.Therefore, in this manual, term " vertical direction " and " horizontal direction " should not explained with their stricti jurise; The convenience that they only should be understood to for reference defines direction comparatively speaking.

Flat tube 4 is slender members that the extrusion molding by metal is formed, and as shown in Figure 2, flat tube 4 have in the inside of flat tube 4, form, for the coolant channel 5 of refrigerant circulation.Flat tube 4 is to allow their longitudinally (that is, the extrusion molding direction of flat tube 4) arrange for the mode of horizontal direction; So the direction that cold-producing medium circulates in coolant channel 5 is also level.Coolant channel 5 comprises a plurality of passages with identical cross-sectional shape and same cross-sectional area, and the plurality of passage is being arranged along the left and right directions in Fig. 2.So the vertical cross-section of flat tube 4 is similar to the cross section of mouth organ.Each coolant channel 5 is all connected with the inside of

house steward

2 and 3.

Fin 6 is installed to the flat horizontal surface of flat tube 4.Here, fin 6 is corrugated fins, but instead, can be plate-shaped fin.Among the fin 6 being vertically arranged side by side, the fin 6 that is arranged in highest line has respectively with the fin 6 that is arranged in minimum row the side plate 7 that is arranged in their outsides separately.

House steward

2 and 3, flat tube 4, fin 6 and side plate 7 are all made by the metal such as aluminium etc. with thermal conductive resin.By soldering (brazing) or welding (welding), flat tube 4 is fixed to

house steward

2 and 3, and fin 6 is fixed to flat tube 4, and side plate 7 is fixed to fin 6.

House steward 2 inside is divided into two section S1 and S2 by a dividing plate P1.Dividing plate P1 is divided into a plurality of groups by a plurality of flat tubes 4.In amounting to 24 flat tubes 4, one group that 12 flat tubes, consists of is connected with section S1, and another group being comprised of 12 flat tubes is connected with section S2.

House steward 3 inside is divided into three section S3, S4 and S5 by two dividing plate P2 and P3.Dividing plate P2 and P3 are divided into many group flat tubes by a plurality of flat tubes 4.In amounting to 24 flat tubes 4, one group that 4 flat tubes, consists of is connected with section S3, and another group being comprised of 15 flat tubes is connected with section S4, and another group of being comprised of 5 flat tubes is connected with section S5.

Above the sum of specifically mentioned flat tube 4, the quantity of the dividing plate of each inner manifold, the quantity of so dividing the quantity of the section obtaining and distributing to the flat tube 4 in each group of being opened by baffle for separating are all example, and not mean and limit by any way the present invention.

Cold-producing medium inflow/effuser 8 is connected with section S3.Cold-producing medium inflow/effuser 9 is connected with section S5.

Heat exchanger 1 works in the following manner.When heat exchanger 1 is used as to condenser, cold-producing medium is fed in section S3 via cold-producing medium inflow/effuser 8.Then, the cold-producing medium that has entered section S3 enters section S1 through four flat tubes 4 that section S3 and section S1 are coupled together.This group being comprised of four flat tubes 4 forms refrigerant path A.Refrigerant path A represents by hollow arrow.Other refrigerant path also represent by hollow arrow.

The cold-producing medium that has entered section S1 turns to, and then through eight flat tubes 4 that section S1 and section S4 are coupled together, enters section S4.This group being comprised of eight flat tubes 4 forms refrigerant path B.

The cold-producing medium that has entered section S4 turns to, and then through seven flat tubes 4 that section S4 and section S2 are coupled together, enters section S2.This group being comprised of seven flat tubes 4 forms refrigerant path C.

The cold-producing medium that has entered section S2 turns to, and then through five flat tubes 4 that section S2 and section S5 are coupled together, enters section S5.This group being comprised of five flat tubes 4 forms refrigerant path D.Then, the cold-producing medium that has entered section S5 is discharged from via cold-producing medium inflow/effuser 9.

When heat exchanger 1 is used as to evaporimeter, cold-producing medium is fed to section S5 via cold-producing medium inflow/effuser 9.Then, cold-producing medium flows through following path: this path is just in time contrary with the path that cold-producing medium flows through when heat exchanger 1 is used as to condenser.Particularly, cold-producing medium is through refrigerant path D, and then through refrigerant path C, then through refrigerant path B, then, through refrigerant path A, the cold-producing medium that has then entered section S3 is discharged from via cold-producing medium inflow/effuser 8.

Fig. 3 shows the outdoor unit 10 of air conditioner.Outdoor unit 10 has housing 11, and the plan view shape of housing 11 is rectangle, and in the inside of housing 11, accommodate compressor 12, propeller type fan 13, for making motor 14 and the heat exchanger 1 of propeller type fan 13 rotation.The plan view shape of heat exchanger 1 is bent to L shaped.

In Fig. 3, shown in the upside of this figure is the rear side of outdoor unit 10, and shown in the downside of this figure is the front face side of outdoor unit 10.At the back side of housing 11, be formed with air entry (not shown); Before housing 11, be formed with exhaust outlet (not shown).Air entry and exhaust outlet include the set of a plurality of apertures (perforation) or slit.When motor 14 makes propeller type fan 13 rotation, extraneous air is inhaled in housing 11 via air entry.This extraneous air and heat exchanger 1 exchanged heat, be then discharged from via exhaust outlet.

Housing 11 comprises a plurality of members.These members comprise: the basal part that is used to form the bottom surface of housing 11; Be used to form four parts (being protecgulum, bonnet, left cap and right cap) of four sides of housing 11; And the top cover that is used to form the end face of housing 11.A part for left cap and a part for right cap stretch in the back side.Air entry is mainly arranged in bonnet, and a part for air entry is also arranged in stretching in those parts in back side of shell of left cap and right cap.Left cap is positioned at the position that the minor face of the heat exchanger L-shaped with plan view shape 1 is faced mutually, and in left cap, is formed with a part of air entry.Exhaust outlet is arranged in protecgulum.

Fig. 4 shows the part of right cap 11SR.This part of right cap 11SR shown in Fig. 4 is positioned at the position of facing mutually with the rear side of the right part of heat exchanger 1.Here, between this rear side of heat exchanger 1 and the inner surface of housing 11, be furnished with for measuring the temperature-sensitive element 15 of outside air temperature.Temperature-sensitive element 15 comprises thermistor, and temperature-sensitive element 15 is set up to heat exchanger 1 by temperature-sensitive element support 20.Now, with reference to Fig. 4 to Fig. 6, by the structure of explanation temperature-sensitive element support 20.

Temperature-sensitive element support 20 forms by the injection moulding of elastic synthetic resin, and there is such structure: wherein, plate-like body portion 21 and cylinder top shape cap (barrel-roof-shaped lid) 22 utilize to be formed compared with the hinge of little thickness 23 and be joined together.From plane, observe, main part 21 has the integrated clamping part 24 at its right-hand member place.Clamping part 24 is configured to the c-shaped clip of plan view shape (clip).

Clamping part 24 is installed between adjacent in vertical direction flat tube 4, and clamping house steward 3.As shown in Figure 5 and Figure 6, clamping part 24 comprises two parts that form abreast in vertical direction, and these two parts are installed on respectively between different a pair of flat tubes 4 for clamping house steward 3.

Clamping part 24 can be configured to other structures except the clip of C shape.For example, it can be configured to be similar to Insulock(registration mark) the soft bundling belt of band (cable tie).In this case, this bundling belt is wound around and tension round house steward 3, thereby temperature-sensitive element support 20 is set up to house steward 3.

Cap 22 has two hooks 25, and hook 25 is formed on cap 22 and edges hinge 23 opposition sides.Main part 21 has two recessed hook retainers 26, and hook retainer 26 is formed on main part 21 and edges hinge 23 opposition sides.When cap 22 rotates in the counterclockwise direction 180 while spending in Fig. 6, cap 22 enters closure state, now link up with 25 flexibly with 26 interlocks of hook retainer, thereby maintain this closure state.Approximately 3/4 area of the main body covered portion 21 of cap 22, that is, and the area except being held the area that portion 24 takies.

Main part 21 has formation passage 27 in the inner, and similarly, cap 22 has formation passage 28 in the inner.Passage 27 and 28 comprises respectively a plurality of apertures.Because the existence of

passage

27 and 28, so even when cap 22 is closed, air also can flow in temperature-sensitive element support 20.

Temperature-sensitive element 15 is placed on the pedestal that pre-position in main part 21 forms, closed cap 22 then, above-mentioned these actions just make temperature-sensitive element 15 be sandwiched between main part 21 and cap 22, thereby are firmly kept.Therefore, at hook 25, the resilient snap between retainer 26 and the resilient snap between main part 21 and cap 22 that therefore causes have just firmly maintained the held state of temperature-sensitive element 15 with hook.Before cap 22 closures, for the lead-in wire 16 of the electric wiring of temperature-sensitive element 15, be layed between a plurality of guide protrusions (guide boss) 29, these guide protrusions 29 are formed on main part 21.Passage 27 in main part 21 and the passage 28 in cap 22 be formed be equipped with lead-in wire 16 location overlap.Therefore, utilize air to pass those passages, lead-in wire 16 is by cooling fully.

On main part 21, be formed with the two class protuberances of all giving prominence to outside.One class is protuberance 30, and from the opposition side of clamping part 24, the inner surface of side cover 11SR is outstanding to the right for they.Another kind of is protuberance 31, and they are outstanding from the rear side of the left end heat exchanger 1 of main part 21 as shown in Figure 5.Protuberance 30 is formed to such an extent that in the top and bottom of main part 21, there is respectively this protuberance at each person place as shown in Figure 5, and protuberance 31 is like this too.

Protuberance 30 has flat part 30a at their free end, and protuberance 31 has flat part 31a at their free end.Flat part 30a is parallel with the plate face of plate-like body portion 21 with 31a.

Before right cap 11SR is installed, the temperature-sensitive element support 20 that maintains temperature-sensitive element 15 in it is set up to heat exchanger 1.Clamping part 24 is placed on house steward 3 from behind, then promotes forward clamping part 24, it is then closed that first above-mentioned these actions open clamping part 24, finally clamps as shown in Figure 4 house steward 3.Clamping part 24 utilizes the elasticity of himself and clamps house steward 3, and this has prevented that clamping part 24 is from house steward's 3 disengagings, unless be applied in external force.

Thereby clamping part 24 can be installed between flat tube 4, near a part of fin 6 this is cut off.Due to the clamping part 24 being installed between flat tube 4, so even when heat exchanger 1 is because of the vibration that passes over from compressor 12 or while vibrating because of the pressure oscillation of cold-producing medium, also can prevent temperature-sensitive element support 20 being axially subjected to displacement along house steward 3.

Clamping part 24 clamps house steward 3 near house steward 3 center.That is, temperature-sensitive element support 20 is arranged near the center along the vertical direction of heat exchanger 1 as shown in Figure 1.This is a position that there is no the too many radiant heat from reaching of carrying out automatic heat-exchanger 1.This has reduced the impact of radiant heat on temperature-sensitive element 15.

Protuberance 31 serves as the buffer for heat exchanger 1.When temperature-sensitive element support 20 tends to take clamping part 24 when fulcrum is rotated counterclockwise from the angle shown in Fig. 4, the flat part 31a of protuberance 31 just contacts with heat exchanger 1, thereby has prevented this rotation.Therefore, temperature-sensitive element support 20 keeps the angle shown in Fig. 4 substantially.This contributes to protuberance 30 to keep contacting with the stable of right cap 11SR.

Temperature-sensitive element support 20 is being set up to heat exchanger 1, and when right cap 11SR is installed, as shown in Figure 4, the flat part 30a of protuberance 30 contacts with the inner surface of right cap 11SR.Now, any trial that temperature-sensitive element support 20 is rotated in a clockwise direction in Fig. 4 or rotates in the counterclockwise direction all can be because of the bight failure of protuberance 30, and this is due to the radius of turn at these places, bights, to be greater than the radius of turn of the center of flat part 30a.That is, prevented that temperature-sensitive element support 20 from take along clockwise direction and in the counterclockwise direction the rotation that clamping part 24 is fulcrum in Fig. 4.By clamping part 24 is installed between flat tube 4, prevented that temperature-sensitive element support 20 (that is, along house steward 3 axially) in the vertical direction of the paper with Fig. 4 is moved.This prevents that with utilizing right cap 11SR rotating photo is combined, and has just fully prevented the movement of temperature-sensitive element support 20.Like this, can, not using under special fixed component and unpainful prerequisite, just temperature-sensitive element support 20 be fixed on to pre-position.

In another available structure, can from temperature-sensitive element support 20, omit protuberance 30, and as an alternative, the protuberance being formed on right cap 11SR can contact with temperature-sensitive element support 20, thereby prevent the rotation of temperature-sensitive element support 20.

A part that is inhaled into the air in housing 11 along with the rotation of propeller type fan 13 was passed temperature-sensitive element support 20 before passing heat exchanger 1.Temperature-sensitive element 15 is measured the temperature of the extraneous air being inhaled into, and then based on this measurement result, the controller (not shown) of air conditioner is controlled the running of this air conditioner.

As shown in Figure 4, when temperature-sensitive element support 20 is set up to heat exchanger 1, temperature-sensitive element support 20 only touches heat exchanger 1 by clamping part 24.Protuberance 31 may touch heat exchanger 1 once in a while, but other parts in addition all never contact with heat exchanger 1.Therefore, as the result of restricted like this contact point (contact spot), do not have too many heat and pass over from heat exchanger 1, and temperature-sensitive element support 20 is not subject to the too many impact of the heat of heat exchanger 1.Therefore, temperature-sensitive element 15 can accurately be measured outside air temperature.

Although what above-described embodiment related to is side-flow type parallel flow heat exchanger 1, the present invention also goes for being provided with lower flow pattern (down-flow type) parallel flow heat exchanger of the house steward of along continuous straight runs and flat tube vertically.In the situation that comprise parallel flow heat exchanger in the indoor unit of air conditioner, the present invention is also applicatory.

Should be understood that, being used for above illustrates that embodiments of the invention never mean and limit the scope of the invention.The present invention has comprised many modifications of making under the prerequisite that does not deviate from main idea of the present invention.

Industrial applicibility

The present invention has obtained the extensive use in comprising the air conditioner of parallel flow heat exchanger.

Reference numerals list

1 heat exchanger

2,3 house stewards

4 flat tubes

5 coolant channels

6 fin

10 outdoor units

11 housings

15 temperature-sensitive elements

16 lead-in wires

20 temperature-sensitive element supports

21 main parts

22 caps

23 hinges

24 clamping parts

27,28 passages

30,31 protuberances

Claims

1. for temperature-sensitive element being set up to the structure to air conditioner, wherein,

Described air conditioner is provided with parallel flow heat exchanger, and described heat exchanger comprises: two house stewards; A plurality of flat tubes that described two house stewards are coupled together; And a plurality of fin that are mounted to the flat horizontal surface of described flat tube,

For keeping the temperature-sensitive element support of described temperature-sensitive element to be set up to described heat exchanger,

Described temperature-sensitive element support has clamping part, and described clamping part is used for clamping described two house stewards' a house steward between adjacent described flat tube, and

The inner surface of the described temperature-sensitive element support that utilizes described clamping part and be incorporated in to a described house steward by the housing with described air conditioner contacts to prevent that described temperature-sensitive element support from take described clamping part and rotating as fulcrum.

2. according to claim 1 for temperature-sensitive element being set up to the structure to air conditioner, wherein, on described temperature-sensitive element support, be formed with the protuberance contacting with the described inner surface of described housing.

3. according to claim 1 for temperature-sensitive element being set up to the structure to air conditioner, wherein, on described temperature-sensitive element support, in the position away from described clamping part, be formed with the protuberance serving as for the buffer of described heat exchanger.

4. according to claim 1 for temperature-sensitive element being set up to the structure to air conditioner, wherein, described clamping part clamps this house steward near a described house steward's center.

According to described in any one in claim 1 to 4 for temperature-sensitive element being set up to the structure to air conditioner, wherein, described temperature-sensitive element support has cap, described cap utilizes hinge and is incorporated in to the main part that is formed with described clamping part, described temperature-sensitive element support is by being sandwiched in described temperature-sensitive element between described main part and described cap and keeping described temperature-sensitive element, described temperature-sensitive element support has and is formed at described main part and the described cap passage in each, and described passage and the location overlap that is equipped with the lead-in wire of described temperature-sensitive element.