Defrosting type fin heat exchanger

Abstract

The utility model discloses a defrosting type fin heat exchanger, which belongs to the technical field of heat exchangers and comprises a support, a base tube and a plurality of fins, the base tube is mounted on the support, the fins are fixedly sleeved outside the base tube, the defrosting component comprises an air guide tube and a heating part, the air guide tube is fixedly connected with the support, and the heating part is fixedly connected with the base tube. The heating part is fixedly installed in the air guide pipe, a plurality of air outlets are formed in the side wall of the air guide pipe in the length direction, the air outlets and the fins are arranged in a staggered mode, each fin is located between every two adjacent air outlets, the air outlets are of inclined channel structures, the air inlet ends of the air outlets are communicated with an inner cavity of the air guide pipe, and the air outlet ends of the air outlets face the fins. According to the defrosting type fin heat exchanger, hot air flow is conveyed to the two sides of the fins through the air guide pipes, frost on the fins is heated and removed, the structure is compact, compared with a traditional water flushing defrosting mode, operation is simpler and more convenient, labor intensity is reduced, and the use experience of a user is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field, in particular, relate to a defrosting type fin heat exchanger. BACKGROUND

[0002] Fin heat exchanger is a kind of heat exchanger that improves heat exchange efficiency by increasing heat exchange area and optimizing heat transfer path.Fin heat exchanger in the use process, when the heat exchanger temperature is lower than the dew point temperature of ambient air, the fin surface of whole heat exchanger will produce condensation water, when outdoor temperature is lower than 0 DEG C in winter, condensation water will condense into thin crisp, frost serious will influence heat exchange efficiency, therefore, when the surface of heat exchanger frost, need to carry out defrosting treatment in time.

[0003] Traditional heat exchanger defrosting mode is mainly water flushing defrosting, that is, through the surface of phase heat exchanger sprays warm water or hot water and carries out defrosting, and this mode is low in cost, but the water after defrosting by spraying will flow to the bottom of heat exchanger, it is difficult to guarantee the neatness of heat exchanger installation space, after water flushing defrosting, usually still needs manual cleaning to water separately, increase labor intensity, and user experience is not good. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problems that: in order to overcome the above-mentioned defects existing in prior art, provide a defrosting type fin heat exchanger that is compact in structure and saves manpower.

[0005] The utility model solves its technical problems and adopts the technical scheme that a defrosting type fin heat exchanger, including support, base pipe and fin, the base pipe is installed on support, the fin has multiple and is fixedly sleeved at the outside of base pipe, still include defrosting subassembly, the defrosting subassembly includes gas guide pipe and heating part, the gas guide pipe is fixedly connected with support, the heating part is fixedly installed in the gas guide pipe, the side wall of gas guide pipe is opened along length direction and is equipped with multiple gas outlets, the gas outlet is staggered with the fin, and each fin is located between the adjacent two gas outlets, the gas outlet is inclined channel structure, the gas inlet end of gas outlet is communicated with the inner chamber of gas guide pipe, and the gas outlet end of gas outlet is towards the fin.

[0006] Further, a plurality of heat transfer sheets are sequentially connected on the outer wall of the gas guide pipe along the length direction thereof, every two heat transfer sheets form a group, and the two heat transfer sheets in each group are oppositely arranged and respectively fitted with the two side walls of the fin opposite to each other.

[0007] Further, a groove is formed at the edge of the fin, and the gas guide pipe is fitted and installed at the groove bottom.

[0008] Further, the support comprises two oppositely arranged mounting plates, edges of the mounting plates are provided with mounting grooves, the mounting grooves are in alignment with the grooves, and two ends of the air guide pipe are mounted in the mounting grooves.

[0009] Further, two ends of the air guide pipe are provided with threaded sections, lock nuts are mounted on opposite sides of the mounting plate on the threaded sections, and the mounting plate is clamped and fixed between the two lock nuts.

[0010] Further, the base pipe is in a serpentine structure, the base pipe comprises straight pipe sections and arc pipe sections which are connected to each other, the straight pipe sections are located between the two mounting plates, the arc pipe sections are located on sides of the mounting plates which are away from the straight pipe sections, and the air guide pipe is parallel to the straight pipe sections.

[0011] Further, two air guide pipes are mounted on each fin, and the two air guide pipes are symmetrically arranged about the straight pipe section.

[0012] Further, the heating element is mounted on an inner wall of the air guide pipe through an insulating element.

[0013] Further, the heating element is a heating sheet.

[0014] The defrosting finned heat exchanger has the advantages that the defrosting finned heat exchanger is provided with air guide pipes on the fins, heat is generated after the heating element in the air guide pipes is powered and heated, and then the heat is blown to the fins through the air outlet under the action of air flow, so that frost on the fins is heated and removed, the structure is compact, operation is simpler and more convenient compared with the traditional water defrosting mode, labor intensity is reduced, and the use experience of users is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The defrosting finned heat exchanger will be further described below in combination with the drawings and embodiments.

[0016] Figure 1 is a perspective view of the defrosting finned heat exchanger;

[0017] Figure 2 is Figure 1 is a local enlarged view of position A in the defrosting finned heat exchanger shown in the figure;

[0018] Figure 3 is Figure 1 is a front view of the defrosting finned heat exchanger;

[0019] Figure 4 is Figure 3 is a sectional view of the defrosting finned heat exchanger along B-B;

[0020] Figure 5 isFigure 4 A partial enlarged view of C in the defrosting fin heat exchanger.

[0021] In the figure: 1, support, 11, mounting plate, 111, mounting groove, 112, locking nut, 12, support column, 2, base pipe, 21, straight pipe section, 22, arc pipe section, 3, fin, 31, groove, 4, defrosting assembly, 41, air guide pipe, 411, air outlet, 42, heating element, 43, insulation element, 44, heat transfer sheet. DETAILED DESCRIPTION

[0022] The utility model will be explained in detail in combination with the drawings. The figure is a simplified schematic diagram, and only the basic structure of the utility model is schematically shown, so it only shows the structure related to the utility model.

[0023] Please refer to Figures 1-5 The utility model provides a defrosting fin heat exchanger, including support 1, base pipe 2, fin 3 and defrosting assembly 4, base pipe 2 is fixedly installed on rack 1, fin 3 is fixedly covered in the outside of base pipe 2, defrosting assembly 4 is fixedly installed on support 1, is used for defrosting treatment to fin 3.

[0024] Support 1 includes two oppositely arranged mounting plates 11, and the support column 12 is fixedly connected between the two mounting plates 11, in the embodiment, the mounting plate 11 is rectangular flat plate structure, the support column 12 has four, and is arranged at the four corners of the mounting plate 11 respectively, the relative fixed relationship between the two mounting plates 11 is realized through the fixed action of the support column 12 at the four corners. The support column 12 and the mounting plate 11 can be connected by bolt connection, clamping and other modes, which are not limited here.

[0025] The base pipe 2 is made of copper material, and the base pipe 2 includes a straight pipe section 21 and an arc pipe section 22. The straight pipe section 21 and the arc pipe section 22 are connected to each other to form a serpentine pipe structure. The straight pipe section 21 is fixedly connected to the mounting plate 11, and the straight pipe section 21 is located between the two mounting plates 11. The arc pipe section 22 is located on the side of the mounting plate 11 away from the straight pipe section 21.

[0026] The fin 3 has a plurality of fins 3, and the plurality of fins 3 are fixedly covered on the straight pipe section 21. During operation, the medium flowing through the base pipe 2 conducts heat to the fin 3, thereby exchanging heat with the air around the heat exchanger. In the embodiment, the fin 3 is a circular structure. In other embodiments, the fin 3 can also be a polygonal or elliptical structure, which is not limited here.

[0027] Please refer to Figure 4 , Figure 5The defrosting assembly 4 comprises a gas guide pipe 41 and a heating element 42, the gas guide pipe 41 is fixedly installed between the two mounting plates 11 and is parallel to the straight pipe section 21, the heating element 42 is fixedly installed in the gas guide pipe 41, a plurality of gas outlets 411 are formed in the side wall of the gas guide pipe 41 in the length direction, the gas outlets 411 are arranged staggered with the fins 3, each fin 3 is located between two adjacent gas outlets 411, the gas outlet 411 is an inclined through hole structure, the gas inlet end of the gas outlet 411 is communicated with the inner cavity of the gas guide pipe 41, and the gas outlet end of the gas outlet 411 is directed to the fin 3, so that the gas flowing out of the gas outlet 11 blows on the two side walls of the fin 3.

[0028] When the defrosting type fin heat exchanger needs to perform defrosting operation on the fin 3, the fan is opened, the air generated by the fan is introduced into the gas guide pipe 41 through the pipeline, at the same time, the heating element 42 is connected to the power supply, the heating element 42 generates heat after being electrified, warm air is formed in the gas guide pipe 41, and the warm air blows on the opposite two side walls of the fin 3 through the gas outlet 411, so that the frost on the surface of the fin 3 is heated and removed. In the embodiment, the fin 3 is made of aluminum material, which not only ensures that the fin 3 has light weight and high strength, but also makes the fin 3 have good heat conduction performance, so as to accelerate heat transfer and be beneficial to efficient defrosting of the fin 3.

[0029] In the embodiment, the heating element 42 is installed on the inner wall of the gas guide pipe 41 through the insulating element 43, and the insulating element 43 insulates the heating element 42 and the gas guide pipe 41. The insulating element 43 can be high-temperature-resistant silica gel or high-temperature-resistant rubber, which is not limited here. In addition, two through holes (not shown in the figure) are formed in the gas guide pipe 41, and the through holes are used for the lead wire of the heating element 42 to pass through. As a preferred embodiment, the heating element 42 is a heating sheet, and in other embodiments, the heating element 42 can also be a heating rod or a heating mesh tube, which can generate heat after being electrified, which is not limited here.

[0030] The gas guide pipe 41 is a hollow tubular structure with an opening at one end, the opening end of the gas guide pipe 41 is used for introducing air, and the closed end of the gas guide pipe 41 can prevent air from flowing out from positions other than the gas outlet 411, thereby improving the utilization rate of heat and enhancing the defrosting effect.

[0031] A plurality of heat transfer sheets 44 are sequentially connected to the outer wall of the gas guide pipe 41 in the length direction of the gas guide pipe 41, each two heat transfer sheets 44 form a group, the two heat transfer sheets 44 in each group are oppositely arranged and respectively abut the opposite two side walls of the fin 3. In this way, the heat generated by the heating element 42 in the gas guide pipe 41 can be transferred to the heat transfer sheet 44 after being conducted to the gas guide pipe 41, and at this time, the heat on the heat transfer sheet 44 can be conducted to the fin 3, thereby further heating and defrosting the fin 3 and greatly improving the defrosting efficiency. The gas guide pipe 41 and the heat transfer sheet 44 are made of aluminum material to improve the heat transfer efficiency.

[0032] Further, please refer to Figure 2 , the edge of the fin 3 is provided with a groove 31, and the air guide pipe 41 is matched and installed in the groove 31. In the embodiment, the groove 31 is a U-shaped groove provided along the radial direction of the fin 3, and the air guide pipe 41 is a circular tubular structure. The air guide pipe 41 is matched and installed at the groove bottom of the U-shaped groove, and the groove bottom of the U-shaped groove is exactly a semicircular structure matched with the air guide pipe 41. On the one hand, the air guide pipe 41 can be positioned, and on the other hand, the air guide pipe 41 can be ensured to be in full contact with the fin 3, so as to promote heat conduction and accelerate defrosting speed.

[0033] In order to fix and install the air guide pipe 41 on the support 1, the edges of the two opposite installation plates 11 are each provided with an installation groove 111, and the installation groove 111 is aligned with the groove 31, so that the middle part of the air guide pipe 41 is installed in the groove 31, and the two ends of the air guide pipe 41 can be installed in the installation groove 111. In the embodiment, the air guide pipe 41 is provided with a locking nut 112 on the opposite sides of the installation plate 11, and the two ends of the air guide pipe 41 are provided as threaded segments to install the locking nuts 112. By screwing the locking nuts 112, the installation plate 11 can be fixed and clamped between the two locking nuts 112, so that the fixed connection relationship between the air guide pipe 41 and the installation plate 11 is realized. When the air guide pipe 41 needs to be removed, the locking nuts 112 are loosened to release the locking relationship between the locking nuts 112 and the installation plate 11, and then the air guide pipe 41 can be taken out from the slot of the installation groove 111. In the embodiment, the installation groove 111 is a U-shaped groove.

[0034] Further, two air guide pipes 41 are installed on each fin 3, and the two air guide pipes 41 are symmetrically arranged about the corresponding straight pipe segment 21.

[0035] The defrosting fin heat exchanger of the utility model installs air guide pipe 41 on fin 3, and the heating element 42 inside air guide pipe 41 generates heat after electrification heating, and then blows to fin 3 through air outlet 411 under the action of airflow, thereby heating and removing the frost on fin 3. The structure is compact, the operation is more simple and convenient compared with the traditional water flushing defrosting mode, the labor intensity is reduced, and the use experience of the user is greatly improved.

[0036] Based on the above ideal embodiment according to the utility model, through the above description, relevant staff can make various changes and modifications without deviating from the scope of the utility model. The technical scope of the utility model is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A defrosting type finned heat exchanger comprising a support, a base pipe mounted on the support, and fins having a plurality of and fixedly sleeved on the outside of the base pipe, characterized in that: The defrosting assembly comprises a gas guide pipe and a heating piece, the gas guide pipe is fixedly connected with the bracket, the heating piece is fixedly installed in the gas guide pipe, a plurality of gas outlets are formed in the length direction of the side wall of the gas guide pipe, the gas outlets are arranged staggered with the fins, each fin is located between two adjacent gas outlets, the gas outlet is an inclined channel structure, the gas inlet end of the gas outlet is communicated with the inner cavity of the gas guide pipe, and the gas outlet end of the gas outlet faces the fin.

2. The defrosting finned heat exchanger according to claim 1, wherein: A plurality of heat transfer sheets are sequentially connected on the outer wall of the gas guide pipe along the length direction of the gas guide pipe, two heat transfer sheets form a group, the two heat transfer sheets of each group are oppositely arranged and respectively attached to the two side walls opposite to the fins.

3. The defrosting finned heat exchanger according to claim 1, wherein: A groove is formed at the edge of the fin, and the gas guide pipe is fitted and installed at the groove bottom.

4. The defrosting finned heat exchanger according to claim 3, wherein: The bracket comprises two oppositely arranged mounting plates, mounting grooves are formed at the edges of the mounting plates, the mounting grooves are aligned with the grooves, and the two ends of the gas guide pipe are installed in the mounting grooves.

5. The defrosting finned heat exchanger according to claim 4, wherein: The two ends of the gas guide pipe are provided with threaded segments, lock nuts are installed on the opposite sides of the threaded segments, and the mounting plates are clamped and fixed between the two lock nuts.

6. The defrosting finned heat exchanger according to claim 4, wherein: The base pipe is in a serpentine structure, the base pipe comprises straight pipe segments and arc pipe segments which are connected with each other, the straight pipe segments are located between the two mounting plates, the arc pipe segments are located on the side of the mounting plates away from the straight pipe segments, and the gas guide pipe is parallel to the straight pipe segments.

7. The defrosting finned heat exchanger according to claim 6, wherein: Two gas guide pipes are installed on each fin.

8. The defrosting finned heat exchanger according to claim 1, wherein: The heating piece is installed on the inner wall of the gas guide pipe through an insulating piece.

9. The defrosting finned heat exchanger according to claim 8, wherein: The heating piece is a heating sheet.

Images