CN110345564A - Machine and air conditioner in self sealss heat exchanger, air conditioning - Google Patents

Abstract

The invention provides a self-sealing heat exchanger, an air-conditioning indoor unit and an air conditioner. The self-sealing heat exchanger comprises: a second section (2) of an evaporator and a third section (3) of an evaporator, and the second section of the evaporator (2) and the third section of the evaporator (3) are completely cut at the joint, and then the two are bent mutually, and the third section of the evaporator (3) includes a The third inner side (31), the second section of the evaporator (2) includes the second inner side (21) located on the inner side of the bend, and part of the structure of the third inner side (31) is inserted into the The interior of the second inner side (21), or part of the structure of the second inner side (21), is inserted into the interior of the third inner side (31). The invention can prevent or reduce wind leakage at this part, improve the heat exchange efficiency of the evaporator, reduce noise, reduce cost, and simple process, and can also form a shower-type cooling effect indoors and prevent hidden dangers of dripping water.

Description

A self-sealing heat exchanger, air-conditioning indoor unit and air conditioner

technical field

The invention belongs to the technical field of air conditioners, and in particular relates to a self-sealing heat exchanger, an air conditioner indoor unit and an air conditioner.

Background technique

In the traditional refrigeration industry, the evaporator of the indoor unit is generally in the shape of an inverted V, and the air outlet is obliquely downward. As a result, when the cold air blows downward, the air supply range is very small, and the space above the air outlet cannot be effectively used. Refrigeration. Moreover, the position between the two bending sections of the evaporator is prone to air leakage, causing the air that has not been heat-exchanged by the evaporator to be blown out through the air outlet, which greatly affects the heat exchange efficiency of the evaporator, making indoor cooling or cooling The thermal comfort is reduced; the existing structure uses sealing glue, stainless steel buckle and other structures to seal the place, but the sealing effect is poor, and the noise increases, the cost increases, the process is complicated, and the energy efficiency decreases; and the other part of the evaporator Condensation condensation is likely to occur between the two bending sections, resulting in the hidden danger of dripping water.

Because the indoor evaporator of the air conditioner in the prior art has a position between two bent sections, it is easy to generate wind leakage, resulting in the air that has not been heat-exchanged by the evaporator being blown out through the air outlet, which greatly affects the exchange rate of the evaporator. Thermal efficiency; the layout of the inverted V-shaped evaporator, the air outlet goes out obliquely downward, so that when the cold air blows downward, the air supply range is very small, and the space above the air outlet cannot be effectively cooled; the other part of the evaporator Condensation and condensation are likely to occur between the two bending sections, resulting in technical problems such as hidden dangers of dripping water. Therefore, the present invention researches and designs a self-sealing heat exchanger, indoor unit and air conditioner.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to overcome the fact that the indoor evaporator of the air conditioner in the prior art is prone to wind leakage at the position between the two bending sections, causing the air that has not been heat-exchanged by the evaporator to be blown out through the air outlet. , which greatly affects the heat exchange efficiency of the evaporator, thereby providing a self-sealing heat exchanger, an air conditioner indoor unit and an air conditioner.

The invention provides a self-sealing heat exchanger, which includes:

The second section of the evaporator and the third section of the evaporator, and the second section of the evaporator and the third section of the evaporator are completely cut at the joints, and then the two are bent mutually, and the evaporator The third section includes a third inner edge located inside the bend, the second section of the evaporator includes a second inner edge located inside the bend, and part of the structure of the third inner edge is inserted into the second inner edge. The interior of the inner side, or part of the structure of the second inner side is inserted into the interior of the third inner side.

Preferably,

The second section of the evaporator includes a second bottom edge at its lowermost end, and the third section of the evaporator includes a third bottom edge at its lowermost end, and the third bottom edge includes a third cut left by cutting. edge, and the third cut edge is inserted into the interior between the second bottom edge and the second inner edge;

or,

The second section of the evaporator includes a second bottom edge at its lowermost end, and the third section of the evaporator includes a third bottom edge at its lowermost end, and the second bottom edge includes the second cut left after cutting. edge, and the second trimmed edge is inserted into the interior between the third bottom edge and the third inner edge.

Preferably,

The second section of the evaporator includes a second top edge at its uppermost end, the third section of the evaporator includes a third top edge at its uppermost end, and the third top edge includes a fourth trimming edge left by cutting, And the fourth trimming edge is inserted into the interior between the second top edge and the second inner edge.

or,

The second section of the evaporator includes a second top edge at its uppermost end, the third section of the evaporator includes a third top edge at its uppermost end, and the second top edge includes a fifth trimmed edge left by cutting, And the fifth trimming edge is inserted into the interior between the third top edge and the third inner edge.

Preferably,

The second inner side and the third inner side intersect at point O, the bottom dead center or top dead center of the third inner side is P, and the distance between point P and point O is The sealing interference amount, the range of the self-sealing interference amount is 0.5mm-1.2mm.

Preferably,

The second inner side and the third inner side intersect at point O, the second section of the evaporator includes a second bottom side at its lowermost end, and the third section of the evaporator includes a second bottom side at its lowermost end Three bottom sides, and the second bottom side intersects with the third bottom side and point Q; or, the second section of the evaporator includes a second top side at its uppermost end, and the third section of the evaporator includes a second top side at its uppermost an uppermost third top edge, and said second top edge intersects said third top edge at point Q;

And the distance between point Q and point O is a self-sealing interference range, and the self-sealing interference range is greater than or equal to 20mm.

Preferably,

The second section of the evaporator and the third section of the evaporator are bent to form a "V"-shaped structure, and the "V"-shaped opening is set upward; and/or, the self-sealing heat exchanger includes a heat pipes, fins and evaporator side plates; and/or, the self-sealing heat exchanger is an evaporator.

Preferably,

After the second section of the evaporator and the third section of the evaporator are bent, the second inner side and the third inner side are arranged opposite; and/or, a first section of the evaporator is also included, and the evaporator The first stage of the evaporator is connected to the end of the second stage of the evaporator which is far away from the third stage of the evaporator.

Preferably,

The first section of the evaporator and the second section of the evaporator are also bent at the joint, and the first section of the evaporator includes a first inner edge located inside the bend and a first outer edge located outside the bend. The side edge, the second section of the evaporator includes a second outer edge located outside the bend, and the first outer edge is cut at the position of the bend.

Preferably,

After the first outer side is cut at the bend, the farthest end point on the first outer side in the direction away from the first inner side in the horizontal direction is M, and the The end point at the farthest end of the second outer side in the direction away from the second inner side in the horizontal direction is N, and the distance between the end point M and the end point N in the horizontal direction is MN, and there is MN ≥5mm.

The present invention also provides an air conditioner indoor unit, which includes the self-sealing heat exchanger described in any one of the preceding items, and also includes a fan located inside the second section of the evaporator and the third section of the evaporator that are bent with each other.

The present invention also provides an air conditioner, which includes the self-sealing heat exchanger described in any one of the preceding items or the aforementioned air-conditioning indoor unit.

A kind of self-sealing heat exchanger, indoor air conditioner and air conditioner provided by the present invention have the following beneficial effects:

1. In the present invention, the part where the second section of the evaporator and the third section of the evaporator were originally connected is cut, and then the two are bent, and finally the third inner side is inserted into the second inner side, or Partially inserting the second inner side into the third inner side can cause a large interference between the bottom of the second section of the evaporator and the bottom of the third section of the evaporator (when placed in a positive V shape, the V port faces upwards) , or make a larger interference between the top of the second section of the evaporator and the top of the third section of the evaporator (when the inverted V shape is placed, the V port faces downward), so that the second section of the evaporator and the third section of the evaporator are connected The part forms an effective and reliable seal, which prevents or greatly reduces the wind leakage in this part, prevents the air that has not been heat-exchanged by the evaporator from being blown out through the air outlet, improves the heat exchange efficiency of the evaporator, and compared with the existing sealing For sealing with cement, stainless steel buckle and other structures, the sealing effect is better, and the noise is reduced, the cost is reduced, and the process is simple;

2. In the present invention, the second section of the evaporator and the third section of the evaporator are bent to form a "V"-shaped structure, and the "V"-shaped opening is set upwards, so that the air inlet of the indoor unit of the air conditioner is at the bottom, and the air outlet is at the bottom. The air outlet is on the top, and the wind after heat exchange is blown out from the upper air outlet, so that the effect of shower cooling is formed on the room, which greatly improves the cooling effect on the room;

3. The present invention also cuts the outer edge of the bending part of the first section of the evaporator at the junction of the first section of the evaporator and the second section of the evaporator, so that the water vapor in the cooled air passing through the first section of the evaporator is produced Condensation will not drip down to other parts of the air conditioner indoor unit because the outer edge of the first stage of the evaporator protrudes from the outer edge of the second stage of the evaporator, but the water vapor generated by the first stage of the evaporator will condense The downward direction can be taken over by the second stage of the evaporator, and flows into the second stage of the evaporator without directly dripping down and causing safety hazards, which solves the problem of hidden dangers of dripping water and improves the reliability of air conditioning operation.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of existing evaporator;

Fig. 2 is a schematic structural view of the self-sealing heat exchanger of the present invention before bending;

Fig. 3 is the front sectional view of the self-sealing heat exchanger of the present invention after being bent;

FIG. 4 is a partially enlarged view of part A of FIG. 3 .

Fig. 5 is a three-dimensional schematic diagram of the self-sealing heat exchanger of the present invention after being bent.

The reference signs in the figure represent:

1. The first section of the evaporator; 11. The first inner side; 12. The first outer side; 2. The second section of the evaporator; 21. The second inner side; 22. The second bottom side; 23. The second outer side Side; 3. The third section of the evaporator; 31. The third inner side; 32. The third bottom side; 321. The third trimming edge; 4. Self-sealing interference amount; 5. Self-sealing interference range; 6. Fan; 7 , heat exchange tube; 8, evaporator side plate.

Detailed ways

As shown in Figures 2-5, the present invention provides a self-sealing heat exchanger, which includes:

The second section 2 of the evaporator and the third section 3 of the evaporator, and the second section 2 of the evaporator and the third section 3 of the evaporator are completely cut at the parts where they meet, and then the two are bent mutually, and The third section 3 of the evaporator includes a third inner side 31 located inside the bend, and the second section 2 of the evaporator includes a second inner side 21 located inside the bend (in the second section 2 of the evaporator and the second section 21 of the inner side of the bend). After the three sections 3 of the evaporator are bent to each other, the second inner side 21 and the third inner side 31 are arranged opposite to each other), and part of the structure of the third inner side 31 is inserted into the first The interior of the two inner sides 21 , or part of the structure of the second inner side 21 is inserted into the interior of the third inner side 31 .

In the present invention, the part where the second section of the evaporator and the third section of the evaporator were originally connected is cut, and then the two are bent, and finally the third inner side is partially inserted into the second inner side, or the first Part of the second inner side is inserted into the third inner side, which can cause a large interference between the bottom of the second section of the evaporator and the bottom of the third section of the evaporator (when placed in a positive V shape, the V port faces upward), or Makes a large interference between the top of the second section of the evaporator and the top of the third section of the evaporator (when placed in an inverted V shape, the V port faces downward), thus forming a gap between the second section of the evaporator and the third section of the evaporator. Effective and reliable sealing prevents or greatly reduces wind leakage at this part, prevents air that has not been heat-exchanged by the evaporator from blowing out through the air outlet, improves the heat exchange efficiency of the evaporator, and compares the existing sealing glue, For sealing with structures such as stainless steel buckles, the sealing effect is better, and the noise is reduced, the cost is reduced, and the process is simple.

Preferably,

The second section of the evaporator 2 includes a second bottom edge 22 at its lowermost end, and the third section of the evaporator 3 includes a third bottom edge 32 at its lowermost end, and the third bottom edge 32 includes the cut remaining The lower third trimming edge 321, and the third trimming edge 321 is inserted into the interior between the second bottom edge 22 and the second inner edge 21;

or,

The second section of the evaporator 2 includes a second bottom edge 22 at its lowermost end, the third section of the evaporator 3 includes a third bottom edge 32 at its lowermost end, and the second bottom edge 22 includes the remaining The lower second cut edge (not shown), and the second cut edge (not shown) is inserted into the interior between the third bottom edge 32 and the third inner edge 31 .

This is the preferred structural form of the interference between the second and third sections of the evaporator of the present invention (the V-shaped opening of the V-shaped heat exchanger is upward, that is, a positive V-shaped, as shown in Figures 3 and 5), namely The third bottom edge of the bottom of the third section of the evaporator is cut, and then the third cut edge is inserted into the position between the second inner side and the second bottom edge, as shown in Figure 4, or the bottom of the second section of the evaporator The second bottom of the evaporator is cut, and then the second cut is inserted into a position (not shown) between the third inner side and the third bottom, so that the bottom of the second section of the evaporator and the third section of the evaporator The amount of interference and the interference range formed between the bottoms are larger than those in the prior art (Fig. 1), which improves the effect of preventing air leakage (that is, the sealing effect) at the junction. Compared with the use of sealing glue and stainless steel buckles In terms of sealing with other structures, the sealing effect is better, and the noise is reduced, the cost is reduced, and the process is simple.

Preferably,

The second section of the evaporator 2 includes a second top edge (not shown) at its uppermost end, the third section of the evaporator 3 includes a third top edge (not shown) at its uppermost end, and the third top edge including a fourth trimming (not shown) remaining after being cut, and inserting the fourth trimming into the interior between the second top edge and the second inner side;

or,

The second section of the evaporator 2 includes a second top edge at its uppermost end, and the third section of the evaporator 3 includes a third top edge at its uppermost end, and the second top edge includes the remaining fifth cut edge after being cut. edge (not shown), and the fifth trimmed edge is inserted into the interior between the third top edge and the third inner edge.

This is another preferred structural form of the interference between the second section and the third section of the evaporator of the present invention (the V-shaped opening of the heat exchanger bent into a V-shape faces downward, that is, an inverted V-shape), that is, the third section of the evaporator The third top edge of the section top is cut and the fourth cut edge is inserted into a position (not shown) between the second inside edge and the second top edge, or the second top edge of the second section top of the evaporator. The edge is cut, and then the fifth cut edge is inserted into the position (not shown) between the third inner edge and the third top edge, so that the top of the second section of the evaporator and the top of the third section of the evaporator are formed The amount of interference and the interference range are larger than those in the prior art (Figure 1), which improves the effect of air leakage prevention at the joint (ie, the sealing effect), compared with the use of sealing glue, stainless steel buckles and other structures. In terms of sealing, the sealing effect is better, and the noise is reduced, the cost is reduced, and the process is simple.

Preferably,

The second inner side 21 and the third inner side 31 intersect at point O, the bottom dead center or top dead center of the third inner side 31 is P, and the distance between point P and point O is The distance is the self-sealing interference amount 4, and the range of the self-sealing interference amount is 0.5mm-1.2mm. As shown in Figure 4, this is the size position of the self-sealing interference of the present invention, the position point of the bottom dead center or top dead center P of the third inner side intersects with the second inner side and the third inner side The distance between points O is the self-sealing interference amount, which can explain the size of the distance that the third inner side inserts downward or upward into the second inner side, and can effectively reflect the bottom of the third section of the evaporator and the bottom of the second section of the evaporator The magnitude of the degree of interference between them, and experiments have proved that setting the range of self-sealing interference to the above range of values can effectively improve the heating or cooling capacity (effect), and reduce noise. The performance test results are as follows: the test results under the same 1000r/min and the same test environment:

Table 1

Heating capacity noise air volume non self-sealing 4907.8 43.9 900 Self-sealing interference 0.5mm 4950 43.6 900 Self-sealing interference 0.8mm 5005 43 900 Self-sealing interference 1.0mm 5006 43.1 900 Self-sealing interference 1.2mm 5005 43 900

Preferably,

The second inner side 21 and the third inner side 31 intersect at point O, the second section of the evaporator 2 includes a second bottom side 22 at its lowermost end, and the third section of the evaporator 3 includes a The third bottom edge 32 at its lowermost end, and the second bottom edge 22 intersects with the third bottom edge 32 and point Q; or, the second section of the evaporator 2 includes a second top edge ( not shown), the third section of the evaporator 3 includes a third top edge (not shown) at its uppermost end, and the second top edge (not shown) and the third top edge (not shown) ) intersects with point Q;

And the distance between point Q and point O is the self-sealing interference range 5, and the self-sealing interference range is greater than or equal to 20mm.

The size position of the self-sealing interference range of the present invention, the distance between the position point of the intersection point Q of the third base and the second base and the intersection point O of the second inner side and the third inner side is the self-sealing interference range, which can explain the size of the distance that the third inner side inserts downward or upward into the second inner side, and can effectively reflect the degree of interference between the bottom of the third section of the evaporator and the bottom of the second section of the evaporator, and the experiment It is proved that setting the range of the self-sealing interference amount within the above numerical range can effectively improve the heating capacity or cooling capacity (effect), and reduce noise. According to the experimental results, when the best interference range of the self-sealing interference is 0.8mm-1mm, and the self-sealing interference range is above 20mm, the self-sealing in the best state can be completed, and the self-sealing structure at this time is the most reliable and most Stablize.

Preferably,

The second section 2 of the evaporator and the third section 3 of the evaporator are bent to form a "V"-shaped structure, and the "V"-shaped opening is set upward; and/or, the self-sealing heat exchanger It includes heat exchange tubes 7, fins and evaporator side plates 8; and/or, the self-sealing heat exchanger is an evaporator. In the present invention, the second section of the evaporator and the third section of the evaporator are bent to form a "V" shape structure, and the opening of the "V" shape is set upward, so that the air inlet of the air conditioner indoor unit is at the bottom, and the air outlet is at the bottom. On the top, the wind after heat exchange is blown out from the upper air outlet, which makes the effect of shower cooling in the room, which greatly improves the cooling effect in the room.

Preferably,

After the second section 2 of the evaporator and the third section 3 of the evaporator are bent, the second inner side 21 and the third inner side 31 are arranged opposite; and/or, a first section of the evaporator is also included 1. The first section 1 of the evaporator is connected to the second section 2 of the evaporator which is far away from the third section 3 of the evaporator. This is the preferred setting position and setting form of the first section of the evaporator of the present invention, which can exchange heat for the air flowing through this position, increase the heat exchange area, and increase the heat exchange effect.

Preferably,

The first section of the evaporator 1 and the second section of the evaporator 2 are also bent at the junction of the two, and the first section of the evaporator 1 includes a first inner edge 11 located inside the bend and a first inner edge 11 located outside the bend. The first outer side 12 of the second evaporator section 2 includes a second outer side 23 located outside the bend, and the first outer side 12 is cut at the position of the bend . The present invention also cuts the outer edge of the bending part of the first evaporator at the junction of the first evaporator and the second evaporator, so that the condensation generated by the water vapor in the cooled air passing through the first evaporator Condensation will not drip down to other parts of the air conditioner indoor unit because the outer edge of the first stage of the evaporator protrudes from the outer edge of the second stage of the evaporator, but the water vapor generated by the first stage of the evaporator will condense downward It can be received by the second stage of the evaporator and flow into the second stage of the evaporator without directly dripping downwards and causing safety hazards, which solves the problem of hidden dangers of dripping water and improves the reliability of air conditioner operation.

Preferably,

After the first outer side is cut at the bend, the farthest endpoint on the first outer side 12 in the direction away from the first inner side 11 in the horizontal direction is M, and The end point at the farthest end of the second outer side 23 in the direction away from the second inner side 21 in the horizontal direction is N, and the distance between the end point M and the end point N in the horizontal direction is MN , and have MN ≥ 5mm. Setting the above size to be more than 5mm can effectively prevent the condensed water on the first stage of the evaporator from dripping along the outer edge to a position other than the second stage of the evaporator, which will cause a safety hazard. Instead, the condensation on it will The water is taken over by the second stage of the evaporator as much as possible, thus effectively solving the problem of safety hazards of dripping water.

The present invention also provides an air-conditioning indoor unit, which includes the self-sealing heat exchanger described in any one of the preceding items, and also includes a fan 6 located on the inside where the second section 2 of the evaporator and the third section 3 of the evaporator are bent. .

In the present invention, the part where the second section of the evaporator and the third section of the evaporator were originally connected is cut, and then the two are bent, and finally the third inner side is partially inserted into the second inner side, or the first Part of the second inner side is inserted into the third inner side, which can form an effective and reliable seal on the joint between the second section of the evaporator and the third section of the evaporator, prevent or greatly reduce the occurrence of wind leakage at this part, and prevent the The air exchanged by the evaporator is blown out through the air outlet, which improves the heat exchange efficiency of the evaporator, and compared with the existing structures such as sealing glue and stainless steel buckle for sealing, the sealing effect is better and the noise is reduced. Cost reduction, simple process;

Also by bending the second section of the evaporator and the third section of the evaporator to form a "V"-shaped structure, and the "V"-shaped opening is set upwards, so that the wind after heat exchange can be blown out from the upper air outlet, so that The shower cooling effect is formed on the room, which greatly improves the cooling effect on the room;

Also, by cutting the outer side of the bending part of the first evaporator at the junction of the first evaporator and the second evaporator, the water vapor condensation generated by the first evaporator can be received by the second evaporator downward. Live, and flow to the second section of the evaporator without directly dripping downwards and causing safety hazards, which solves the problem of hidden dangers of dripping water and improves the reliability of air-conditioning operation.

The present invention also provides an air conditioner, which includes the self-sealing heat exchanger described in any one of the preceding items or the aforementioned air-conditioning indoor unit. The self-sealing evaporator of the present invention can reduce costs, reduce procedures, increase energy efficiency, reduce noise, and reduce air conditioning adjustment time, etc.; it solves the problem of hidden water dripping when the positive V evaporator is cooling, and brings an additional function: the pioneered inverted evaporator can Realize the function that the air outlet is on the top and the air inlet is on the bottom, so that the air conditioner can perform shower-type cooling and air supply. This can greatly increase the experience of the human body, save heating time, increase cooling efficiency and cooling comfort.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range. The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made, these improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (11)

1. A self-sealing heat exchanger which is characterized in that: the method comprises the following steps:

the novel solar heat collector comprises an evaporator second section (2) and an evaporator third section (3), the evaporator second section (2) and the evaporator third section (3) are completely cut at the connecting position of the evaporator second section and the evaporator third section (3), then the evaporator second section and the evaporator third section are bent, the evaporator third section (3) comprises a third inner side edge (31) located on the inner side of the bend, the evaporator second section (2) comprises a second inner side edge (21) located on the inner side of the bend, part of the structure of the third inner side edge (31) is inserted into the second inner side edge (21), or part of the structure of the second inner side edge (21) is inserted into the third inner side edge (31).

2. The self-sealing heat exchanger of claim 1, wherein:

the evaporator two-section (2) comprises a second bottom edge (22) positioned at the lowermost end of the evaporator three-section (3), the evaporator three-section (3) comprises a third bottom edge (32) positioned at the lowermost end of the evaporator three-section, the third bottom edge (32) comprises a third cutting edge (321) left after being cut, and the third cutting edge (321) is inserted into the inner part between the second bottom edge (22) and the second inner side edge (21);

or,

the evaporator two-section (2) comprises a second bottom edge (22) located at the lowest end of the evaporator three-section (3), the evaporator three-section comprises a third bottom edge (32) located at the lowest end of the evaporator three-section, the second bottom edge (22) comprises a second cutting edge left after being cut, and the second cutting edge is inserted into the inner portion between the third bottom edge (32) and the third inner side edge (31).

3. The self-sealing heat exchanger of claim 1 or 2, wherein:

the evaporator two-stage section (2) comprises a second top edge at the uppermost end thereof, the evaporator three-stage section (3) comprises a third top edge at the uppermost end thereof, the third top edge comprises a fourth cutting edge left by cutting, and the fourth cutting edge is inserted into the inner part between the second top edge and the second inner side edge;

or,

the evaporator two-stage section (2) comprises a second top edge located at the uppermost end thereof, the evaporator three-stage section (3) comprises a third top edge located at the uppermost end thereof, the second top edge comprises a fifth cutting edge left by cutting, and the fifth cutting edge is inserted into the interior between the third top edge and the third inner side edge.

4. The self-sealing heat exchanger of claim 1, wherein:

the second inner side edge (21) and the third inner side edge (31) are intersected at a point O, the bottom dead center or the top dead center of the third inner side edge (31) is P, the distance between the point P and the point O is a self-sealing interference amount (4), and the range of the self-sealing interference amount is 0.5mm-1.2 mm.

5. The self-sealing heat exchanger of claim 1, wherein:

the second inner side edge (21) and the third inner side edge (31) intersect at a point O, the evaporator two-section (2) comprises a second bottom edge (22) at the lowest end thereof, the evaporator three-section (3) comprises a third bottom edge (32) at the lowest end thereof, and the second bottom edge (22) and the third bottom edge (32) intersect at a point Q; or, the evaporator two-section (2) comprises a second top edge at the uppermost end thereof, the evaporator three-section (3) comprises a third top edge at the uppermost end thereof, and the second top edge and the third top edge intersect at a point Q;

and the distance between point Q and point O is a self-sealing interference range (5) greater than or equal to 20 mm.

6. The self sealing heat exchanger of any one of claims 1-5, wherein:

the evaporator second section (2) and the evaporator third section (3) are bent to form a V-shaped structure, and the opening of the V shape is arranged upwards; and/or the self-sealing heat exchanger comprises a heat exchange tube (7), fins and an evaporator side plate (9); and/or the self-sealing heat exchanger is an evaporator.

7. The self sealing heat exchanger of any one of claims 1-6, wherein:

after the evaporator second section (2) and the evaporator third section (3) are bent, the second inner side edge (21) and the third inner side edge (31) are oppositely arranged; and/or the evaporator further comprises an evaporator first section (1), and the evaporator first section (1) is connected with one end, far away from the evaporator third section (3), of the evaporator second section (2).

8. The self-sealing heat exchanger of claim 7, wherein:

the evaporator is characterized in that the evaporator section (1) and the evaporator section (2) are also bent at the connecting position of the evaporator section and the evaporator section, the evaporator section (1) comprises a first inner side edge (11) located on the inner side of the bent section and a first outer side edge (12) located on the outer side of the bent section, the evaporator section (2) comprises a second outer side edge (23) located on the outer side of the bent section, and the first outer side edge (12) is cut at the bent position.

9. The self-sealing heat exchanger of claim 8, wherein:

after the first outer side edge is cut at the bent part, the end point of the farthest end of the first outer side edge (12) in the direction departing from the first inner side edge (11) along the horizontal direction is M, the end point of the farthest end of the second outer side edge (23) in the direction departing from the second inner side edge (21) along the horizontal direction is N, the distance between the end point M and the end point N in the horizontal direction is MN, and MN is larger than or equal to 5 mm.

10. An air conditioning indoor unit, characterized in that: comprising a self-sealing heat exchanger according to any one of claims 1-9, further comprising a blower (6) located inside the evaporator two-section (2) and the evaporator three-section (3) bent over each other.

11. An air conditioner, characterized in that: comprising the self-sealing heat exchanger according to any one of claims 1 to 9 or the air conditioning indoor unit according to claim 10.