CN104329865B - Fan, fin heat exchanger employing fan and refrigerator - Google Patents

Abstract

The present invention provides a fan, which includes an air guiding cylinder, fan blades arranged in the air guiding cylinder, and a motor driving the fan blades to rotate, wherein four installation lugs protrude from the outer peripheral wall of the air guiding cylinder; and the fan It also includes two lock bars, each lock bar has a straight bar portion and a first connecting portion and a second connecting portion symmetrically arranged at both ends of the straight bar portion; the first connecting portion and the second connecting portion of one locking bar are connected to the two Two adjacent mounting lugs are rotatably connected, and rotate around the geometric connection line of two adjacent mounting lugs; the first connecting part and the second connecting part of the other lock bar are respectively adjacent to the other two The mounting lugs are rotationally connected and rotate around the geometric connection line of the other two adjacent mounting lugs. In addition, the invention also provides a finned heat exchanger and a refrigerator with the fan. Because the fan of the present invention has two locking levers, the efficiency of installing the fan on other components is significantly improved, and it is also beneficial to the disassembly of the fan.

Description

Fan, finned heat exchanger and refrigerator with the fan

technical field

The invention relates to heat transfer and dissipation, in particular to a fan, a fin heat exchanger and a refrigerator with the fan.

Background technique

The role of the fan in the air-cooled radiator is to drive the air flow by its own rotation, so that the air flows through the fins at a certain speed and direction, and take away the heat or cold on the fins by using the heat exchange between the air and the fins. Fans are often used in combination with fins to form a finned heat exchanger, such as the evaporator part in an air-cooled refrigerator, the evaporator part and the condenser part of a household air conditioner. The fan usually chooses the axial flow fan, the reason is that the axial flow fan does not change the direction of the air flow and has relatively large air supply volume and relatively high heat dissipation efficiency.

Existing finned heat exchangers generally include fans and fins, which can be applied in multiple technical fields, such as indoor units of air conditioners, outdoor units of air conditioners, refrigerators, electrical components and so on. In some fin heat exchangers, it also includes a base plate on which the fins are installed, and the fan is fixed on the base plate by screws or other fixing methods, which makes the installation and disassembly of the fan inconvenient. In other fin heat exchangers, it also includes a heat conductor passing through each fin; the fan is fixed on the front or rear end of the fin by a fixing device, and the fan and the heat conductor are two separate parts, resulting in the fan's The installation and disassembly is not convenient enough, and the combination of the fan and the fins is relatively poor.

Contents of the invention

An object of the first aspect of the present invention is to overcome at least one drawback of fans in the prior art, to provide a fan that can be installed and disassembled quickly.

A further object of the first aspect of the invention is to maximize the efficiency of fan installation and removal.

Another further object of the first aspect of the invention is to minimize fan vibration.

An object of the second aspect of the present invention is to provide a finned heat exchanger having the above-mentioned fan.

A further object of the second aspect of the invention is to maximize the efficiency of the fan mounted on the fin pack.

An object of the third aspect of the present invention is to provide a refrigerator having the above-mentioned finned heat exchanger.

According to the first aspect of the present invention, there is provided a fan, including an air guiding cylinder, fan blades arranged in the air guiding cylinder, and a motor that drives the fan blades to rotate, wherein the outer peripheral wall of the air guiding cylinder There are four mounting lugs protruding from the top; moreover, the fan also includes two locking levers, each of which has a straight rod portion and a first connecting portion and a second connecting portion symmetrically arranged at both ends of the straight rod portion department;

The first connecting portion and the second connecting portion of one lock bar are respectively rotatably connected to two adjacent mounting lugs; the first connecting portion and the second connecting portion of the other lock bar are respectively connected to the other two Two adjacent mounting lugs are rotationally connected.

Optionally, each of the mounting lugs has a hole; the first connecting portion and the second connecting portion are respectively a first hook-shaped portion and a second hook-shaped portion, respectively hooked on two adjacent into the holes in the mounting lugs.

Optionally, each of the first hook portion and the second hook portion comprises:

an arc-shaped opening hook configured to be hooked in the hole;

The connecting rod section is configured to extend from one end of the corresponding straight rod portion to one end of the corresponding arc-shaped opening hook.

Optionally, the connecting rod segment is a curved rod segment, and the axis of the curved rod segment is on the same plane as the axis of the straight rod portion; the axis of the straight rod portion is perpendicular to the arc-shaped opening hook the plane where the axis is located; and the straight bar portion is located on the opening side of the arc-shaped opening hook.

Optionally, the connecting rod section includes:

a plurality of first straight buckling sections, each of the first straight buckling sections is inclined at an inclination angle of 10° to 70° relative to the straight rod portion; and

A plurality of bent buckle sections are respectively configured to connect the straight bar part with the first straight line buckle section adjacent to the straight bar part, every two adjacent first straight line buckle sections and The arc-shaped opening hook and the first straight buckle segment adjacent to the arc-shaped opening hook.

Optionally, each of the first hook-shaped portion and the second hook-shaped portion has a first straight buckle segment adjacent to the straight rod portion aligned with the straight rod portion from its starting point. Extending from one end of the corresponding straight rod portion to the other end of the straight rod portion obliquely; every two adjacent first straight buckle sections extend in opposite directions.

Optionally, the number of the plurality of first straight buckling segments is two.

Optionally, the bent buckle segment connecting the straight rod portion and the first straight buckle segment adjacent to the straight rod portion includes a second straight buckle segment perpendicular to the straight rod portion and a set Arc segments at both ends of the second straight snap segment.

According to a second aspect of the present invention, there is provided a finned heat exchanger, comprising a fin set and any one of the above-mentioned fans, the fin set has a plurality of fins, and each of the fins has at least two Lock bar notches, so that there are at least two grooves on the fin group; the linear rods of the two lock bars of the fans are respectively located in the two grooves, so that the fan is fixed on the on the fin set.

Optionally, the locking bar notch includes:

an entry port provided on the side wall of the fin to allow the linear rod portion to enter or exit the locking rod slot;

The hook, the opening of which communicates with the inlet, is used to hook the straight rod.

Optionally, each of the fins has four locking bar notches, so that the set of fins has two groups of grooves, and each group of grooves includes two grooves for installing one fan, Therefore, two fans are fixed on the fin set.

Optionally, it further includes a heat pipe passing through each of the fins; the included angle between the upper surface of each of the fins and the axis of the heat pipe is less than 90°.

According to a third aspect of the present invention, there is provided a refrigerator, including any one of the above-mentioned fin heat exchangers.

The fan, the finned heat exchanger and the refrigerator with the fan in the present invention have two locking levers, which significantly improve the efficiency of installing the fan on other components, and are also beneficial to the disassembly of the fan.

Further, due to the special structure of the fan and the fin heat exchanger with the fan and the first connecting piece and the second connecting piece in the refrigerator of the present invention, the mounting and dismounting between the locking bar and the fan is significantly improved.

Further, due to the special structure of the fan of the present invention, the finned heat exchanger with the fan and the connecting rod section in the refrigerator, it is beneficial to reduce the vibration generated when the fan is running.

Further, due to the special structure of the fins in the fin heat exchanger and the refrigerator having the fin heat exchanger, the efficiency of installing and dismounting the fan on and from the fin set is significantly improved.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

FIG. 1 is a schematic structural diagram of a fan according to an embodiment of the present invention;

Fig. 2 is a schematic front view of a locking lever in a fan according to an embodiment of the present invention;

Fig. 3 is a schematic left view of the locking bar shown in Fig. 2;

Fig. 4 is a schematic bottom view of the locking bar shown in Fig. 2;

Fig. 5 is a schematic perspective view of the locking bar shown in Fig. 2;

Fig. 6 is a schematic structural diagram of a finned heat exchanger with the fan according to an embodiment of the present invention, wherein only the fin group and the locking lever are shown;

Fig. 7 is a schematic front view of a finned heat exchanger with the fan according to one embodiment of the present invention, wherein the fixing plate is not shown;

Fig. 8 is a schematic top view of the fin heat exchanger shown in Fig. 7;

Figure 9 is a schematic front view of a fin heat exchanger with the fan according to one embodiment of the present invention;

Fig. 10 is a schematic left side view of the fin heat exchanger shown in Fig. 9;

Figure 11 is a schematic front view of a finned heat exchanger with the fan according to one embodiment of the present invention;

Figure 12 is a schematic front view of a finned heat exchanger with the fan according to one embodiment of the present invention;

13 is a schematic sectional view of a refrigerator having a fin heat exchanger according to one embodiment of the present invention.

detailed description

Fig. 1 is a schematic structure diagram of a fan according to an embodiment of the present invention. The fan 100 may generally include an air guide cylinder 10, a fan blade 20 arranged in the air guide cylinder 10, and a motor driving the fan blade 20 to rotate; the air guide cylinder 10 may also be called an outer frame or a fan frame or a cylinder wall, and Used to fix the motor and guide the airflow, etc. In particular, in order to improve the efficiency of fan installation and removal, four installation lugs 11 protrude from the outer peripheral wall of the air guide tube 10 , and the fan 100 also includes two locking levers 30 . Specifically, each locking bar 30 has a straight bar portion 31 and a first connecting portion and a second connecting portion symmetrically arranged at two ends of the straight bar portion 31 . Wherein, the first connection part and the second connection part of one locking bar 30 are respectively connected with two adjacent mounting lugs 11 in rotation; Adjacent mounting lugs 11 are rotatably connected; it is beneficial to fix or install the straight rod portion 31 on other components, so that the fan 100 can be quickly installed on or disassembled from other components. In some embodiments of the present invention, four installation lugs 11 protrude from the outer peripheral walls of both ends of the air guide tube 10, so as to expand the area of the two end faces of the air guide tube 10, which is beneficial to contact with other components. .

In some embodiments of the present invention, as shown in FIG. 2 , the first connecting portion and the second connecting portion are respectively a first hook-shaped portion and a second hook-shaped portion. Since each mounting lug 11 has a hole 12 , during installation, the first hook portion and the second hook portion are respectively hooked into the holes 12 on two adjacent mounting lugs 11 . The locking rods 30 can rotate around the edge of the hole where the hook portion is in contact with the hole 12 , so as to facilitate the relative opening or closing of the two locking rods 30 .

2 to 5 are views from various angles of the locking lever. Wherein, FIG. 3 is a schematic left view of the lock bar shown in FIG. 2 . Each of the first hook portion and the second hook portion includes: an arc-shaped opening hook 32 configured to be hooked in the hole 12; a connecting rod section 33 configured to extend from one end of the corresponding straight rod portion 31 to a corresponding arc One end of shaped opening hook 32.

Fig. 4 is a schematic bottom view of the locking rod shown in Fig. 2, the connecting rod segment 33 is a curved rod segment, the axis of the curved rod segment and the axis of the straight rod portion 31 are on the same plane; the axis of the straight rod portion 31 is perpendicular to the arc The plane where the axis of the arc-shaped opening hook 32 is located;

Further, FIG. 5 is a schematic perspective view of the lock bar shown in FIG. 2. As shown in FIG. 2 and FIG. The segment 34 is inclined at an inclination angle of 10° to 70° relative to the straight rod portion 31; and a plurality of bent buckle segments 35 are respectively configured to connect the straight rod portion 31 and the first adjacent straight rod portion 31 A straight buckle section 34 , every two adjacent first straight buckle sections 34 and the arc-shaped opening hook 32 and the first straight line buckle section 34 adjacent to the arc-shaped opening hook 32 . The first straight snap section 34 of each of the first hook portion and the second hook portion adjacent to the straight rod portion 31 forms an oblique angle from the starting point relative to the straight rod portion 31 by the corresponding straight rod portion. One end of 31 extends toward the other end of the straight rod portion 31, wherein the inclination angle is equal to the value of the above-mentioned inclination angle; every two adjacent first straight buckling sections 34 extend in opposite directions. Moreover, the distance from the starting point of the first straight buckling section 34 to the straight rod portion 31 is smaller than the distance from the end point to the straight rod portion 31 . This kind of setting is beneficial to the flexibility between the straight rod portion 31 of the lock rod 30 and the arc-shaped opening hook 32, and the fan 100 and other components are fastened by the spring force of the curved rod section, and it is also beneficial to reduce the movement of the fan 100. resulting vibration.

In an optional embodiment of the present invention, the number of the plurality of first straight buckling segments 34 is two. The bent snap section 35 connecting the straight bar portion 31 and the first straight snap section 34 adjacent to the straight bar portion 31 includes a second straight snap section perpendicular to the straight bar portion 31 and a second straight snap section arranged on the second straight snap section. The arc segment at both ends of the buckle segment.

According to the second aspect of the present invention, the present invention also provides a finned heat exchanger 200 with the fan in any one of the above embodiments. The fin heat exchanger 200 may include a fin group 210 and the fan 100 in any of the above-mentioned embodiments. Specifically, the fin set 210 has a plurality of fins, and each fin has at least two locking bar notches, so that the fin set has at least two grooves 211 . The straight rods 31 of the locking rods 30 of the two fans 100 are respectively located in the two grooves 211 to fix the fans 100 on the fin set 210 . When installing, turn the linear rod portion 31 of the locking rod so that it is located in the groove 210; when disassembling, turn the linear rod portion of the locking rod 31 in the opposite direction to make it turn out of the groove 211; Very convenient.

Fig. 6 is a schematic structure diagram of a finned heat exchanger with the fan according to an embodiment of the present invention, in which only the fin group 210 and the locking bar 30 are shown. The locking bar notch on each fin all comprises: inlet, and it is arranged on the side wall of fin, makes linear bar 31 enter locking bar notch or come out from locking bar notch; Grab hook, its opening and The inlet port is connected to hook the straight rod portion 31 . The special shape of the notch of the locking rod can improve the stability of the installation and fixing.

Fig. 7 is a schematic front view of a finned heat exchanger with the fan according to an embodiment of the present invention, wherein the fixing plate 230 is not shown. The fin heat exchanger also includes heat pipes 220 and fixing plates 230 . One end of the heat pipe 220 passes through each fin, and the other end of the heat pipe 220 is fixed on the fixing plate 230 , so that heat can be transferred between the fixing plate 230 and the fin group 210 . The linear rod portion 31 of the locking rod 100 can be arranged vertically, and the fins are arranged horizontally. Wherein, each fin is perpendicular to the axis of the heat pipe 220 to form a straight fin heat exchanger, which can be applied in a semiconductor refrigerator, and dissipates the heat generated by the hot end surface of the semiconductor refrigeration sheet 400 in the semiconductor refrigerator to the surrounding In air, it may also be referred to as a hot end heat exchanger 300 .

Fig. 8 is a schematic top view of the finned heat exchanger shown in Fig. 7; the fins in the finned heat exchanger adopt a special structure to improve the heat dissipation efficiency of the semiconductor refrigerator. Specifically, the novel fin has a first half and a second half that are symmetrical about a geometric axis of symmetry. Both the inner edge angle and the outer edge angle formed by the first half and the second half at the joint portion intersecting the geometric axis of symmetry are greater than 120°. The length of the geometric connection line between the inner edge endpoint of the extended end of the first half and the inner edge endpoint of the extended end of the second half is greater than the outer vertex at the junction of the first half and the second half to the geometric connection line distance so that the length of the fin is greater than the width of the fin. The inner edge of each of the first half and the second half includes: a first inner edge segment extending along a geometric connecting line from the inner edge endpoint of the protruding end of the corresponding first half or second half; an inner edge section extending from the junction of the corresponding first half or the second half to the end of the corresponding first inner edge section at an oblique angle relative to the geometric line; and formed between the first inner edge section and the second inner edge section Lock bar notch between two inner edge segments. One end surface of the air guide tube 10 of the fan 100 can be abutted against the first inner edge segment and the fan 100 is configured to blow airflow from the front of the inner edge of the fin set 210 to the outer edge of the fin set 210 to ensure There is a certain gap between the end surface of the air guide tube 10 of the fan abutting against the first inner edge section and the inner apex at the junction of the first half and the second half. The outer vertices of the fin group 210 formed by the above-mentioned fins can be leaned against the rear wall of the back plate 800 of the refrigerator, and the gap formed between the rear wall of the back plate 800 can be used as a gradual airflow channel to increase the size of the fins. The space in contact with the surrounding environment can effectively improve the heat exchange efficiency.

Fig. 9 is a schematic front view of a finned heat exchanger with the fan according to an embodiment of the present invention; wherein, the straight bar portion 31 of the locking bar 30 can be arranged horizontally, and the fins are arranged vertically, so as to fit into the semiconductor refrigerator. The structure inside the tank and the guidance of the airflow dissipate the cold generated by the cold end surface of the semiconductor refrigeration sheet 400 in the semiconductor refrigerator into the inner tank, which can also be called the cold end heat exchanger 600 . FIG. 10 is a schematic left side view of the fin heat exchanger shown in FIG. 9 ; the surface where the fin abuts against one end surface of the air guide cylinder 10 is a plane.

Fig. 11 is a schematic front view of a finned heat exchanger with the fan according to one embodiment of the present invention; each fin may have four locking bar notches, so that the fin set 210 has two sets of grooves 211, each group of grooves 211 includes two grooves 211 for installing one fan 100, so that two fans 100 are fixed on the fin group 210, so as to improve the heat dissipation or cooling efficiency of the fin heat exchanger.

Fig. 12 is a schematic front view of a finned heat exchanger with the fan according to an embodiment of the present invention; the angle between the upper surface of each fin and the axis of the heat pipe 220 is less than 90° to form an inclined fin heat exchanger. The exchanger can significantly improve heat dissipation or cooling efficiency in some occasions.

According to a third aspect of the embodiments of the present invention, the embodiments of the present invention further provide a refrigerator having the fin heat exchanger in any of the above embodiments. The finned heat exchanger of the embodiment of the present invention is particularly suitable for semiconductor refrigerators, and of course, as known by those skilled in the art, it can also be applied to compression refrigeration refrigerators.

13 is a schematic sectional view of a refrigerator having a fin heat exchanger according to one embodiment of the present invention. A semiconductor refrigerator generally includes a semiconductor refrigeration chip 400 , a cold-end heat exchanger 600 and a hot-end heat exchanger 300 . Wherein the fixed plate of the hot end heat exchanger 300 is in contact with the hot end surface of the semiconductor refrigeration sheet 400, the fixed plate of the cold end heat exchanger 600 exchanges heat with the cold end surface of the semiconductor refrigeration sheet 400 through the cold transfer block 500, and the cold transfer block 500 A thermal insulation layer 700 is provided around the wall. In order to realize the high-efficiency refrigeration of the semiconductor refrigerator.

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (11)

1. a kind of fan, the flabellum including ventilating duct, being arranged in described ventilating duct and the motor driving described flabellum rotation, its It is characterised by,

Four mounting lugs are protruded on the periphery wall of described ventilating duct, each described mounting lug has hole；

And, described fan also includes:

Two locking bars, each described locking bar has straight line bar portion and is arranged symmetrically in the first connecting portion at described straight line bar portion two ends And second connecting portion；

The first connecting portion of one described locking bar and second connecting portion described mounting lug adjacent with two respectively rotates and connects；

The first connecting portion of another described locking bar and adjacent with two other the respectively described mounting lug of second connecting portion turn It is dynamically connected；And

Described first connecting portion and described second connecting portion are respectively the first hook section and the second hook section, are hooked on two respectively In hole on adjacent described mounting lug；

Each of described first hook section and described second hook section include:

Arc opening hook, is configured to be hooked in described hole；

Connect bar segment, be configured to extend to one end of accordingly described arc opening hook from one end of accordingly described straight line bar portion.

2. fan according to claim 1 it is characterised in that

Described connection bar segment is bending bar segment, and the axis of the axis of described bending bar segment and described straight line bar portion is generally aligned in the same plane On；

The axis of described straight line bar portion is perpendicular to the plane at the axis place of described arc opening hook；And

Described straight line pole portion is located at the open side of described arc opening hook.

3. fan according to claim 2 it is characterised in that

Described connection bar segment includes:

Multiple first straight line buckle sections, each described first straight line buckle section is to be in 10 ° to 70 ° with respect to described straight line bar portion Inclined at inclination angles is arranged；With

Multiple bending buckle sections, are respectively configured to connect described straight line bar portion and the first straight line adjacent with described straight line bar portion The adjacent first straight line buckle section of buckle section, each two and described arc opening hook and adjacent with described arc opening hook first Straight line buckle section.

4. fan according to claim 3 it is characterised in that

The first straight line buckle adjacent with described straight line bar portion of each of described first hook section and described second hook section Duan Congqi starting point with respect to described straight line bar portion with becoming a slanted angle from accordingly described straight line bar portion one end to described straight line The direction of the other end of bar portion extends；

The bearing of trend of the adjacent described first straight line buckle section of each two is contrary.

5. fan according to claim 4 it is characterised in that

The quantity of the plurality of first straight line buckle section is two.

6. fan according to claim 3 it is characterised in that

Connect described straight line bar portion and the first straight line buckle section adjacent with described straight line bar portion bending buckle section include vertical Second straight line buckle section and the arc section being arranged on second straight line buckle section two ends in described straight line bar portion.

7. a kind of fin heat exchanger, including fins set it is characterised in that also including any one of claim 1 to 6 Fan,

Described fins set has multiple fins, and each described fin at least has two locking bar notches, so that described fins set On at least there are two grooves；

Described fan Wei Yu be fixed on institute in described two grooves by the linear bar part in the locking bar of two described fans State in fins set.

8. fin heat exchanger according to claim 7 it is characterised in that

Described locking bar notch includes:

Inlet port, it is arranged on the side wall of described fin, so that described straight line bar portion enters described locking bar notch or from institute State locking bar notch out；

Grab, its opening is connected with described inlet port, with straight line bar portion described in hook.

9. fin heat exchanger according to claim 7 it is characterised in that

Four locking bar notches are had on each described fin, so that two groups of grooves, groove described in every group are had on described fins set Including two grooves installing a described fan, so that two described fans are fixed with described fins set.

10. fin heat exchanger according to claim 7 it is characterised in that

Also include:

Heat pipe, it passes through each described fin；

The upper surface of each described fin is less than 90 ° with the angle of the axis of described heat pipe.

A kind of 11. refrigerators are it is characterised in that include the fin heat exchanger any one of claim 7 to 10.