CN107763831B

CN107763831B - Heat exchange device and air conditioning equipment

Info

Publication number: CN107763831B
Application number: CN201711102547.2A
Authority: CN
Inventors: 刘从峰; 林军国; 何杜兵; 郑坚斌
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2017-11-10
Filing date: 2017-11-10
Publication date: 2020-11-10
Anticipated expiration: 2037-11-10
Also published as: CN107763831A

Abstract

The invention provides a heat exchange device and air conditioning equipment, wherein the heat exchange device comprises: the heat exchanger comprises at least two sub heat exchangers which are arranged at intervals along the wind direction, each sub heat exchanger comprises a fin and at least one row of refrigerant pipes which are connected with the fin in a penetrating way, each fin comprises a front half part and a rear half part, and the front half part is positioned at the upstream of the wind direction relative to the rear half part; in each sub heat exchanger, at least the front half part of the fin penetrated and connected by the refrigerant pipe in the row at the most upstream in the wind direction is a flat sheet. The heat exchange device provided by the invention can improve defrosting efficiency and avoid the problem that defrosting is easy to carry out again due to accumulated melted water.

Description

Heat exchange device and air conditioning equipment

Technical Field

The invention relates to the field of air conditioners, in particular to a heat exchange device and an air conditioning device.

Background

The heat exchange efficiency of the heat exchanger is directly related to the energy efficiency ratio of the whole air conditioner, in order to improve the heat exchange efficiency of the heat exchanger, the heat exchanger of the existing air conditioning equipment generally adopts slotted fins, corrugated fins and the like with higher heat exchange efficiency, and in the process of realizing the invention, the inventor finds that at least the following problems exist in the prior art: under the working condition of heating in winter, fins of the outdoor heat exchanger are easy to frost, so that the energy efficiency of the whole air conditioner is reduced, and the problem of defrosting of the air conditioner is involved at the moment.

Disclosure of Invention

In order to solve at least one of the above technical problems, an object of the present invention is to provide a heat exchange device.

Another object of the present invention is to provide an air conditioning apparatus having the above heat exchange device.

To achieve the above object, an embodiment of a first aspect of the present invention provides a heat exchange device, including: the heat exchanger comprises at least two sub heat exchangers which are arranged at intervals along the wind direction, each sub heat exchanger comprises a fin and at least one row of refrigerant pipes which are connected with the fin in a penetrating mode, each fin comprises a front half part and a rear half part, and the front half part is located at the upstream of the rear half part in the wind direction; in each sub heat exchanger, at least the front half part of the fin through which the row of refrigerant pipes positioned at the most upstream in the wind direction passes is a flat sheet.

In the heat exchange device provided by the above embodiment of the present invention, the front half of the fin penetrating through the row of refrigerant tubes located at the most upstream in the wind direction in each sub heat exchanger is designed to be a flat sheet, that is, the front half of the fin at the windward side of each sub heat exchanger is designed to be a flat sheet, and compared with the fins such as a slit sheet and a corrugated sheet, the surface of the flat sheet is relatively smooth, so as to facilitate the cooling water on the surface to slip and drop, for the sub heat exchanger located at the most upstream in the wind direction in the plurality of sub heat exchangers, because most of the water vapor in the air is intensively condensed on the front half of the fin under the heating working condition, the front half of the fin at the most upstream in the wind direction is designed to be a flat sheet, so as to help to quickly drain the melted water on the surface of the fin under the defrosting working condition, improve the defrosting efficiency, and avoid the problem that the melted water is easily condensed again due to accumulation, for other sub heat exchangers except for the sub heat exchangers located at the most upstream in the wind direction, because there is the interval space between the adjacent sub heat exchanger and makes the wind pressure have certain decline, lead to the sub heat exchanger in the downwind direction to appear the condition of frosting easily, design this sub heat exchanger in the downwind direction's fin first half is the plain film, can help to change the defrosting under the operating mode with the water on its surface arrange fast to the greatest extent, promote the efficiency of defrosting to avoid the problem of the easy frost of once more because of melting water accumulation.

In addition, the heat exchange device provided by the invention in the embodiment can also have the following additional technical characteristics:

in the above technical solution, in each of the sub heat exchangers, the rear half of the fin through which the row of refrigerant tubes located at the most upstream in the wind direction passes is a flat sheet.

In the scheme, for all the sub-heat exchangers, the rear half part of the fin penetrated and connected by the refrigerant pipe in the row at the most upstream in the wind direction is designed to be a flat sheet, namely the whole fin penetrated and connected by the refrigerant pipe in the row at the windward side of each sub-heat exchanger is designed to be a flat sheet, compared with the fins such as a slotted sheet and a corrugated sheet, the wind resistance of the flat sheet is small, the problem that the frosting condition on the front half part of the fin is intensified due to the increase of the wind resistance of the rear half part of the fin can be prevented, the water discharged from the front half part of the fin is prevented from accumulating on the rear half part of the fin under the defrosting condition, and therefore the effects of quickly exhausting the melted water on the surface of the fin under the defrosting condition, improving the defrosting efficiency and avoiding the phenomenon that the frost is easily condensed again due.

In any of the above technical solutions, in the at least two sub heat exchangers, all the fins of the one that is located at the most upstream in the wind direction are flat fins.

In the scheme, all fins of one of all the sub-heat exchangers which is positioned at the most upstream of the wind direction are flat sheets, so that the wind resistance of the sub-heat exchanger at the most upstream of the wind direction can be relatively reduced, the influence on the heat exchange efficiency of the sub-heat exchanger at the most downstream of the wind direction due to the excessively small wind amount is prevented, and meanwhile, most of water vapor in the air is easily condensed on the sub-heat exchanger at the most upstream of the wind direction under the heating working condition, so that the design can help to quickly drain the melted water on the surface of the sub-heat exchanger at the most upstream of the wind direction under the defrosting working condition, the defrosting efficiency is improved, and the problem that the melted water is easily accumulated and condensed again is solved.

In any of the above technical solutions, in each of the sub heat exchangers, the fins, through which the refrigerant tubes in the other rows except the row located at the most upstream in the wind direction penetrate, are one or a combination of a flat plate, a louver plate, a corrugated plate, and a slit plate.

In the scheme, the fins which are arranged in each sub-heat exchanger and are penetrated and connected by other rows of refrigerant pipes except for the row which is positioned at the most upstream in the wind direction are one or a combination of a flat sheet, a louver sheet, a corrugated sheet and a slotted sheet, and after water vapor in the air meets condensation and is condensed near the refrigerant pipe at the row which is positioned at the most upstream in the wind direction, the water vapor content in the air blown to the downstream part of refrigerant pipe accessories is reduced, and the frosting degree is correspondingly reduced, so that the fins which are penetrated and connected by the part of refrigerant pipes can be flexibly arranged to be one or a combination of a flat sheet, a louver sheet, a corrugated sheet and a slotted sheet, for example, the fins which are penetrated and connected by the part of refrigerant pipes can be arranged to be one or a combination of a louver sheet, a corrugated sheet and a slotted sheet, so that the effect of increasing the air heat exchange area can be realized under other working conditions of the air conditioning equipment, and the refrigeration, the air exchange area can be ensured, The heat efficiency, of course, in addition to this, based on the actual frosting distribution law of each equipment, can also design the fin that this part of tube array passes through to be the plain film.

In any of the above technical solutions, for the case where multiple rows of refrigerant tubes are provided on the sub-heat exchanger, the multiple rows of refrigerant tubes on the same sub-heat exchanger are connected to the same integral fin in a penetrating manner, or the multiple rows of refrigerant tubes on the same sub-heat exchanger are correspondingly connected to multiple single-row fins in a penetrating manner.

In the scheme, for the condition that a plurality of rows of refrigerant pipes are arranged on the sub-heat exchangers, the plurality of rows of refrigerant pipes on the same sub-heat exchanger are connected with the same integral fin in a penetrating way, more specifically, for example, pipe holes for connecting the plurality of rows of refrigerant pipes are formed in the integral fin so as to realize that the plurality of rows of refrigerant pipes on the same sub-heat exchanger are connected with the same integral fin in a penetrating way, the scheme has the advantages of simple structure and convenient assembly, of course, a single-row fin can be designed to be connected with the refrigerant pipes in a penetrating way, for example, pipe holes for connecting the single-row refrigerant pipes are formed in the single-row fin, thus, the plurality of rows of refrigerant pipes on the same sub-heat exchanger are correspondingly connected with the plurality of single-row fins in a penetrating way one by one, the structure design of the fins is more flexible, and fins of different, when the condensation efficiency of the product needs to be finely adjusted, specifically, when the air cooling efficiency is slightly increased as required, the corrugated sheet or the louver sheet or the slotted sheet can be selected according to the requirement to be matched with the refrigerant tube row positioned in the midstream of the wind direction or the refrigerant tube row positioned in the downstream of the wind direction in the sub-heat exchanger, so that the design requirement is met, the fine design of the product is facilitated, and the energy efficiency design precision of the product is promoted.

In any of the above technical solutions, in the at least two sub heat exchangers, a pipe pitch of a refrigerant pipe at an upstream most in a wind direction is greater than or equal to that of the refrigerant pipes of the other sub heat exchangers; and/or the pipe diameter of the refrigerant pipe of the most upstream sub heat exchanger in the wind direction is less than or equal to the pipe diameters of the refrigerant pipes of other sub heat exchangers.

In the scheme, the refrigerant pipe pitch on the sub heat exchanger on the windward side in all the sub heat exchangers is designed to be larger than or equal to the refrigerant pipe pitches of other sub heat exchangers, so that the wind resistance of the wind direction upstream part can be correspondingly reduced, the wind pressure gradient is reduced, the problem that the sub heat exchangers on the wind direction downstream part are reheated due to insufficient wind volume is avoided, the heat dissipation efficiency on the plurality of sub heat exchangers is basically balanced, the heat exchange short plate is avoided, and the overall heat exchange efficiency of the heat exchange device is improved; the pipe diameter of the refrigerant pipe on the sub heat exchanger on the windward side in all the sub heat exchangers is designed to be less than or equal to that of the refrigerant pipe of other sub heat exchangers, on one hand, the heat exchange area on the sub heat exchanger at the downstream of the wind direction can be further increased, so that the heat exchange efficiency of the sub heat exchanger can be basically balanced with that of the sub heat exchanger at the windward side, on the other hand, it is understood that the sub heat exchanger located most upstream in the wind direction is provided with an outlet for the circulation of the refrigerant, the sub heat exchanger located most downstream in the wind direction is provided with an inlet for the inflow of the refrigerant, so that the wind direction is opposite to the refrigerant flow direction, wherein, by controlling the refrigerant pipe diameter of the sub heat exchanger positioned at the most upstream of the wind direction to be smaller, the pipe diameter of the refrigerant pipe at the downstream of the refrigerant flow path is smaller, so that the kinetic energy of the refrigerant at the downstream in the refrigerant flow path is approximately consistent with the kinetic energy of the refrigerant at the upstream, and the effects of reducing noise and improving heat exchange efficiency are achieved.

In any of the above technical solutions, the number of the sub heat exchangers is 3.

In this scheme, the condensation volume that three sub heat exchangers realized basically satisfies the heat transfer (condensation or evaporation) load of most air conditioning equipment, can lead to the heat transfer performance of the most low reaches sub heat exchanger of wind direction to obtain effective performance when its quantity is too much, consequently, the quantity of designing sub heat exchanger is 3, can realize giving consideration to the heat transfer performance and the work efficiency of equipment, improve the cost performance of product, of course, this scheme is not limited to this, technical personnel can also design the quantity of sub heat exchanger to be 2 based on actual heat transfer load, 4 even more than 4.

In any of the above technical solutions, the at least two sub heat exchangers include a first sub heat exchanger, a second sub heat exchanger, and a third sub heat exchanger, which are sequentially arranged along a wind direction, and the number of tube rows of the first sub heat exchanger, the second sub heat exchanger, and the third sub heat exchanger is 1 row, 1 column, and 1 column, or 1 column, 2 columns, or 1 column, and 2 columns, or 1 column, 2 columns, and 2 columns, or 1 column, and 3 columns.

In the scheme, at least two sub heat exchangers are designed to comprise a first sub heat exchanger, a second sub heat exchanger and a third sub heat exchanger which are sequentially arranged along the wind direction, and the number of the tube rows of the first sub heat exchanger, the second sub heat exchanger and the third sub heat exchanger is 1 row, 1 row and 1 row, or 1 row, 2 rows and 1 row, or 1 row, 1 row and 2 rows, or 1 row, 2 rows and 2 rows, or 1 row, 1 row and 3 rows, so that the wind resistance of each part of the heat exchange device and the heat exchange efficiency of each flow path are basically consistent, the integral heat exchange efficiency of the heat exchange device is improved, and the integral energy efficiency of the air conditioning equipment where the heat exchange device is located is favorably improved.

In any of the above technical solutions, the heat exchange device further includes: and the water cooling device is used for delivering water to the interval between the adjacent sub heat exchangers.

In the scheme, the water cooling device is arranged, when the heat exchange device is used as a condenser and is in a refrigeration working condition, the water cooling device can be used for sending water to the interval of the adjacent sub-heat exchangers for auxiliary heat dissipation so as to cool the adjacent sub-heat exchangers, thus realizing the reduction of the heat load of the condenser, the improvement of the condensation effect of the condenser, and the reduction of the surface temperature of the condenser, correspondingly reducing the heat load of a fan, a volute and a motor of air conditioning equipment, preventing the problems of overheating melting and deformation of the fan, the volute and the motor installation structure part of the air conditioning equipment, and ensuring the operation reliability of the whole air conditioning equipment, in addition, the water cooling device can be used for supplying cooling water to the interval of the adjacent sub-heat exchangers after at least the front half part of a fin penetrated by a row of refrigerant pipes at the most upstream of the wind direction on the sub-heat exchangers is a flat sheet, the cooling water is directly hit to the surface of the fin of one of the adjacent sub-heat exchangers in the wind direction downstream under the action of wind pressure to perform auxiliary water-cooling heat dissipation, particularly, the cooling water is intensively hit to the front half part of the fin of the sub-heat exchanger in the wind direction downstream, the front half part of the fin is a flat sheet, so that cooling water which is not evaporated after heat absorption is performed on the surface of the fin can easily slip and drip from the surface of the flat sheet, adverse effects of heat preservation effect formed by inverse fins due to accumulation of the cooling water are prevented, the auxiliary heat dissipation of the fin is ensured to be effective and reliable, the energy efficiency ratio of air conditioning equipment is effectively ensured, meanwhile, the problem of overheating deformation of a volute of an outdoor side fan and a motor fixing structure is effectively prevented.

In the above technical solution, the water cooling device includes a water spraying device, the water spraying device includes nozzles for spraying water, wherein at least one of the nozzles is correspondingly arranged at the same interval; and/or the water cooling device comprises a water fetching device which comprises water fetching wheels, wherein at least one water fetching wheel is correspondingly arranged at the same interval.

In the scheme, the water cooling device comprises a water spraying device, the water spraying device comprises nozzles for spraying water, and at least one nozzle is correspondingly arranged at the same interval, wherein the nozzles can be used for enabling cooling water to be fully dispersed and atomized and then enter the interval, so that the problems of water bridges and liquid layers on the surfaces of fins due to concentrated water distribution under the condition of concentrated spraying can be avoided, the evaporation efficiency of the surfaces of the fins is improved, the combined cooling efficiency of air cooling and water cooling is realized, and the whole energy efficiency of the air conditioning equipment is favorably improved; set up water cooling plant including the device of fetching water, the device of fetching water includes the wheel of fetching water, wherein, same interval correspondence is equipped with at least one wheel of fetching water, utilize the wheel of fetching water to make the cooling water fully disperse, in the interval of getting into after atomizing, can avoid concentrating under the spraying circumstances like this and lead to fin surface water bridge, liquid layer problem to appear owing to the water yield distributes concentratedly, realize promoting fin surface's evaporation efficiency, realize forced air cooling and water-cooled combination cooling efficiency, do benefit to the complete machine efficiency that promotes air conditioning equipment.

An embodiment of a second aspect of the present invention provides an air conditioning apparatus, including the heat exchanging device in any one of the above technical solutions.

The air conditioner provided by the embodiment of the second aspect of the present invention has all the above beneficial effects by providing the heat exchanging device in any one of the above technical solutions, and details are not repeated herein.

Optionally, the air conditioning equipment is mobile air conditioning equipment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a cooling apparatus according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the portion A shown in FIG. 1;

FIG. 3 is a schematic view of a portion A shown in FIG. 1 in another embodiment;

FIG. 4 is a schematic view of the structure of a louver according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view in the direction B-B shown in FIG. 4;

FIG. 6 is a partially enlarged schematic view of a cooling device according to a first embodiment of the present invention;

FIG. 7 is a partially enlarged schematic view of a cooling device according to a second embodiment of the present invention;

FIG. 8 is a partially enlarged schematic view of a cooling device according to a third embodiment of the present invention;

FIG. 9 is a schematic structural view of a cooling apparatus according to an embodiment of the present invention;

FIG. 10 is a partial enlarged schematic view of a cooling device according to a fourth embodiment of the present invention;

FIG. 11 is a partially enlarged schematic view of a cooling device according to a fifth embodiment of the present invention;

FIG. 12 is a partially enlarged schematic view of a cooling device according to a sixth embodiment of the present invention;

fig. 13 is a partially enlarged schematic view of a cooling device according to a seventh embodiment of the present invention;

FIG. 14 is a schematic structural view of a cooling apparatus according to an embodiment of the present invention;

FIG. 15 is an enlarged partial view of a cooling device according to an eighth embodiment of the present invention;

FIG. 16 is an enlarged partial view of a cooling device according to a ninth embodiment of the present invention;

fig. 17 is a partially enlarged schematic structural view of a cooling device according to a tenth embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 17 is:

10 first sub heat exchanger, 11 outlet, 20 second sub heat exchanger, 30 third sub heat exchanger, 31 inlet, 40 interval, 50 fins, 51 flat sheet, 52 louver sheet, 521 pipe hole, 522 louver, 60 refrigerant pipe, 71 water beating wheel and 72 water beating motor.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The heat exchange device according to some embodiments of the present invention is described below with reference to fig. 1 to 17.

As shown in fig. 1 to 17, the heat exchange device according to the embodiment of the first aspect of the present invention includes at least two sub heat exchangers, the at least two sub heat exchangers are arranged at intervals 40 along a wind direction (for example, a W direction illustrated in the drawings), each sub heat exchanger includes a fin 50 and at least one row of refrigerant tubes 60 penetrating through the fin 50, the fin 50 includes a front half and a rear half, and the front half is located upstream of the wind direction relative to the rear half; in each sub heat exchanger, at least the front half part of the fin 50 through which the refrigerant pipe 60 in the row at the most upstream in the wind direction passes is a flat sheet 51.

In the heat exchange device provided by the above embodiment of the present invention, the front half of the fin 50 through which the row of refrigerant tubes 60 located at the most upstream in the wind direction in each sub heat exchanger passes is designed to be the flat sheet 51, that is, the front half of the fin 50 located at the most upstream in the wind direction in each sub heat exchanger is designed to be the flat sheet 51, and compared with the fin 50 such as a slit sheet, a corrugated sheet, and the like, the surface of the flat sheet 51 is relatively smooth, so that the cooling water on the surface can be easily dropped off, and for the sub heat exchanger located at the most upstream in the wind direction in a plurality of sub heat exchangers, because most of the water vapor in the air is intensively condensed and condensed on the front half of the fin 50 under the heating condition, the front half of the fin 50 located at the most upstream in the wind direction is designed to be the flat sheet 51, so as to help to quickly drain off the melted water on the surface under the defrosting condition, so as to improve the defrosting efficiency, and avoid the problem that the melted water is easily condensed again, and for the other sub heat exchangers except for the sub heat exchangers located, because there is interval 40 space between the adjacent sub heat exchanger and makes the wind pressure have certain decline, lead to the sub heat exchanger in the downwind direction to appear the condition of frosting easily, design this sub heat exchanger in the downwind direction's fin 50 first half is plain film 51, can help to change the defrosting operating mode down with the water-logging on its surface arrange away fast, promote the efficiency of defrosting, and avoid the problem of frost once more easily because of the water-logging is accumulated, reduce the spot deposit on fin surface simultaneously, guarantee its heat exchange efficiency.

Alternatively, all of the sub heat exchangers are fixed to the same edge plate, or portions of a plurality of the sub heat exchangers are fixed to the same edge plate.

In one embodiment of the present invention, as shown in fig. 6, 10, 12 and 15, in each sub heat exchanger, the rear half of the fin 50 through which the refrigerant pipe 60 in the row located most upstream in the wind direction passes is a flat piece 51.

In the scheme, for all the sub-heat exchangers, the rear half part of the fin 50 penetrated and connected by the row of refrigerant pipes 60 positioned at the most upstream in the wind direction is designed to be the flat sheet 51, namely, the whole fin 50 penetrated and connected by the row of refrigerant pipes 60 positioned at the windward side of each sub-heat exchanger is designed to be the flat sheet 51, compared with the fin 50 such as a slotted sheet, a corrugated sheet and the like, the wind resistance of the flat sheet 51 is small, the problem that the frost formation condition on the front half part of the fin 50 is intensified due to the increase of the wind resistance on the rear half part of the fin 50 can be prevented, the water discharged from the front half part of the fin 50 under the defrosting condition is prevented from being accumulated on the rear half part of the fin 50, and therefore, the effects of being beneficial to quickly discharging the melted water on the surface of the fin 50 under the defrosting condition, improving the defrosting efficiency and avoiding the.

In one embodiment of the present invention, as shown in fig. 2, 6, 7, 10, 12, 13, 15 and 16, all of the fins 50 of the one of the at least two sub heat exchangers which is most upstream in the wind direction are flat sheets 51.

In the scheme, all the fins 50 of one of all the sub-heat exchangers which is positioned at the most upstream part in the wind direction are flat fins 51, so that the wind resistance of the sub-heat exchanger at the most upstream part in the wind direction can be relatively reduced, the influence on the heat exchange efficiency of the sub-heat exchanger at the most downstream part in the wind direction due to the excessively small wind quantity is prevented, and meanwhile, most of water vapor in the air is easily condensed on the sub-heat exchanger at the most upstream part in the wind direction under the heating working condition, so that the design can help to quickly drain away the melted water on the surface of the sub-heat exchanger at the most upstream part in the wind direction under the defrosting working condition, the defrosting efficiency is improved, and the problem that the melted water is easily accumulated and.

In an embodiment of the present invention, optionally, in each sub heat exchanger, the fins 50 through which the refrigerant tubes 60 of the other rows except for the row located most upstream in the wind direction penetrate are one or more combinations of flat sheets 51, louver sheets 52, corrugated sheets and slit sheets.

In the scheme, the fins 50 which are arranged in each sub heat exchanger and penetrated and connected by the refrigerant pipes 60 of other rows except for the row at the most upstream in the wind direction are one or a combination of a flat sheet 51, a louver sheet 52, a corrugated sheet and a slotted sheet, and after the moisture in the air is subjected to cold condensation near the refrigerant pipes 60 of the row at the most upstream in the wind direction, the moisture content in the air blown to the accessories of the refrigerant pipes 60 at the downstream part is reduced, and the frost formation degree is correspondingly reduced, so that the fins 50 penetrated and connected by the part of the refrigerant pipes 60 can be flexibly arranged to be one or a combination of a plurality of flat sheets 51, louver sheets 52, a corrugated sheet and a slotted sheet, for example, the fins 50 penetrated and connected by the part of the refrigerant pipes 60 can be arranged to be one or a combination of a plurality of louver sheets 52, a corrugated sheet and a slotted sheet, so that the effect of increasing the air heat exchange area can be achieved under other working conditions of the air conditioning equipment, the cooling and heating energy efficiency of the air conditioning equipment is ensured, and besides, the fins 50 penetrated and connected with the part of tube arrays can be designed to be flat sheets 51 based on the actual frosting distribution rule of each equipment.

In an embodiment of the present invention, in the case that a plurality of rows of refrigerant tubes 60 are provided on the sub-heat exchangers, the plurality of rows of refrigerant tubes 60 on the same sub-heat exchanger are connected to the same integral fin 50 in a penetrating manner, or the plurality of rows of refrigerant tubes 60 on the same sub-heat exchanger are correspondingly connected to a plurality of single-row fins 50 in a penetrating manner.

In the present embodiment, for the case that a plurality of rows of refrigerant tubes 60 are disposed on the sub-heat exchangers, the plurality of rows of refrigerant tubes 60 on the same sub-heat exchanger are connected to the same integral fin 50 in a penetrating manner, and more specifically, for example, the integral fin 50 is provided with tube holes 521 for connecting the plurality of rows of refrigerant tubes 60 in a penetrating manner, so as to connect the plurality of rows of refrigerant tubes 60 on the same sub-heat exchanger to the same integral fin 50 in a penetrating manner, which has the advantages of simple structure and convenient assembly, of course, the present embodiment can also design a single-row fin 50 to be connected to the refrigerant tubes 60 in a penetrating manner, for example, the single-row fin 50 is provided with tube holes 521 for connecting the single-row of refrigerant tubes 60 in a penetrating manner, so that the plurality of rows of refrigerant tubes 60 on the same sub-heat exchanger are correspondingly connected to the plurality of single-row fins 50 in a penetrating manner one-to, for example, when the condensation efficiency of the product needs to be fine-tuned, specifically, when the air cooling efficiency needs to be slightly increased, the corrugated sheet or the louver 52 or the slotted sheet can be selected according to the requirement to be matched with the row of the refrigerant pipes 60 in the midstream of the wind direction or the row of the refrigerant pipes 60 in the downstream of the wind direction in the sub-heat exchanger, so as to meet the design requirement, facilitate the fine design of the product, and facilitate the improvement of the energy efficiency design precision of the product.

In some embodiments of the present invention, in at least two sub heat exchangers, the tube pitch of the refrigerant tube 60 of the most upstream in the wind direction is greater than or equal to the tube pitch of the refrigerant tubes 60 of the other sub heat exchangers; and/or the pipe diameter of the refrigerant pipe 60 of the most upstream refrigerant pipe 60 in the wind direction in at least two sub heat exchangers is less than or equal to the pipe diameter of the refrigerant pipes 60 of other sub heat exchangers.

In the scheme, the pipe pitch of the refrigerant pipes 60 on the sub heat exchanger on the windward side in all the sub heat exchangers is designed to be larger than or equal to the pipe pitch of the refrigerant pipes 60 of other sub heat exchangers, so that the wind resistance of the wind direction upstream part can be correspondingly reduced, the wind pressure gradient is reduced, the problem of reheating of the sub heat exchangers on the wind direction downstream part due to insufficient wind volume is avoided, the heat dissipation efficiency on the plurality of sub heat exchangers is basically balanced, the heat exchange short plate is avoided, and the whole heat exchange efficiency of the heat exchange device is improved; the pipe diameter of the refrigerant pipe 60 on the sub heat exchanger on the windward side in all the sub heat exchangers is designed to be less than or equal to the pipe diameter of the refrigerant pipe 60 of other sub heat exchangers, on one hand, the heat exchange area on the sub heat exchanger at the downstream of the wind direction can be further increased, so that the heat exchange efficiency of the sub heat exchanger can be basically balanced with that of the sub heat exchanger at the windward side, on the other hand, it is understood that the sub heat exchanger located at the most upstream in the wind direction is provided with an outlet 11 for the circulation of the refrigerant, and the sub heat exchanger located at the most downstream in the wind direction is provided with an inlet 31 for the inflow of the refrigerant, so that the wind direction is opposite to the refrigerant flow direction, wherein, by controlling the pipe diameter of the refrigerant pipe 60 of the sub heat exchanger positioned at the most upstream of the wind direction to be smaller, that is, the diameter of the refrigerant pipe 60 at the downstream of the refrigerant flow path is smaller, so that the kinetic energy of the downstream refrigerant in the refrigerant flow path is approximately consistent with the kinetic energy of the upstream refrigerant, and the effects of reducing noise and improving heat exchange efficiency are achieved.

In some embodiments of the present invention, as shown in fig. 1 to 17, the number of sub heat exchangers is 3.

In some embodiments of the present invention, as shown in fig. 1 to 17, the at least two sub heat exchangers include a first sub heat exchanger 10, a second sub heat exchanger 20, and a third sub heat exchanger 30 arranged in sequence in a wind direction.

More specifically, as shown in fig. 1, 6, 7 and 8, the numbers of tube rows of the first sub heat exchanger 10, the second sub heat exchanger 20 and the third sub heat exchanger 30 are 1 row, 1 row and 1 column, respectively; as shown in fig. 9 to 13, the number of tube rows of the first sub heat exchanger 10, the second sub heat exchanger 20, and the third sub heat exchanger 30 is 1 row, and 2 rows, but may be 1 row, 2 rows, and 1 row; as shown in fig. 14 to 17, the numbers of tube rows of the first sub heat exchanger 10, the second sub heat exchanger 20, and the third sub heat exchanger 30 are 1 row, and 3 rows, respectively, but may be 1 row, 2 rows, and 2 rows, respectively.

In the scheme, at least two sub heat exchangers are designed to comprise a first sub heat exchanger 10, a second sub heat exchanger 20 and a third sub heat exchanger 30 which are sequentially arranged along the wind direction, and the number of the tube rows of the first sub heat exchanger 10, the second sub heat exchanger 20 and the third sub heat exchanger 30 is 1 row, 1 row and 1 row, or 1 row, 2 rows and 1 row, or 1 row, 1 row and 2 rows, or 1 row, 2 rows and 2 rows, or 1 row, 1 row and 3 rows, so that the size of the wind resistance of each part of the heat exchange device and the heat exchange efficiency of each flow path are basically consistent, the overall heat exchange efficiency of the heat exchange device is improved, and the overall energy efficiency of the air conditioning equipment where the heat exchange device is located is improved.

In a preferred embodiment of the invention, the heat exchange means further comprises water cooling means for feeding water into the space 40 of adjacent sub heat exchangers.

In the scheme, a water cooling device is arranged, when the heat exchange device is used as a condenser and is in a refrigeration working condition, the water cooling device can be used for sending water to the interval 40 of the adjacent sub-heat exchangers for auxiliary heat dissipation so as to cool the adjacent sub-heat exchangers, thus realizing the reduction of the heat load of the condenser, the improvement of the condensation effect of the condenser, and the reduction of the surface temperature of the condenser, correspondingly reducing the heat load of a fan, a volute and a motor of air conditioning equipment, preventing the problems of overheating melting and deformation of the fan, the volute and the motor installation structure part of the air conditioning equipment, and ensuring the operation reliability of the whole air conditioning equipment, in addition, as can be understood, at least the front half part of the fin 50 penetrated and connected with the row of refrigerant pipes 60 at the most upstream in the wind direction on the sub-heat exchangers is a flat sheet 51, in the product operation process, after the water cooling device supplies cooling water to, the cooling water directly hits the surface of the fin 50 of one of the adjacent heat exchangers in the downstream of the wind direction under the action of wind pressure to perform auxiliary water-cooling heat dissipation, especially intensively hits the front half part of the fin 50 of the heat exchanger in the downstream of the wind direction, the front half part of the fin 50 is a flat sheet 51, so that the cooling water which is not evaporated after heat absorption on the surface of the fin 50 can easily drop from the surface of the flat sheet 51, the adverse effect of resisting the formation of heat preservation effect on the fin 50 due to the accumulation of the cooling water is prevented, the auxiliary heat dissipation on the fin 50 is ensured to be effective and reliable, the energy efficiency ratio of the air conditioning equipment is effectively ensured, meanwhile, the problem of overheating deformation of a volute of an outdoor fan and a motor fixing structure is effectively prevented, and the reliability of the.

In some embodiments of the present invention, the water cooling device comprises a water spraying device (not shown in the figures) comprising nozzles for spraying water, wherein at least one nozzle is correspondingly provided at the same interval 40; and/or as shown in fig. 1, 9 and 14, the water cooling device comprises a water fetching device, the water fetching device comprises a water fetching wheel 71, wherein at least one water fetching wheel 71 is correspondingly arranged at the same interval 40, more specifically, a water tank for collecting water is arranged below the water fetching wheel 71, and a water fetching motor 72 is arranged for driving the water fetching wheel 71 to rotate, so that the water in the water tank is driven to be raised when the water fetching wheel 71 rotates, and the purpose of increasing heat dissipation and cooling of the water in the water tank entering the interval 40 is achieved.

In the scheme, the water cooling device comprises a water spraying device, the water spraying device comprises nozzles for spraying water, at least one nozzle is correspondingly arranged at the same interval 40, and cooling water can be fully dispersed and atomized by the nozzles and then enters the interval 40, so that the problems of water bridges and liquid layers on the surfaces of the fins 50 caused by concentrated water distribution under the condition of concentrated spraying can be avoided, the evaporation efficiency of the surfaces of the fins 50 is improved, the combined cooling efficiency of air cooling and water cooling is realized, and the whole energy efficiency of the air conditioning equipment is favorably improved; set up water cooling plant including the device of fetching water, the device of fetching water includes fetching water wheel 71, wherein, same interval 40 correspondence is equipped with at least one fetching water wheel 71, utilize fetching water wheel 71 can make the cooling water fully dispersed, in the interval 40 is gone into after atomizing, can avoid concentrating to spray under the condition like this and lead to fin 50 surface water bridge, liquid layer problem to appear owing to the water yield concentrates the distribution, realize promoting the evaporation efficiency on fin 50 surface, realize forced air cooling and water-cooled combination cooling efficiency, do benefit to the complete machine efficiency that promotes air conditioning equipment.

In the first embodiment of the present invention, as shown in fig. 1, 2 and 6, W indicates a wind direction, the first sub heat exchanger 10, the second sub heat exchanger 20 and the third sub heat exchanger 30 are arranged at an interval 40 along the wind direction W, and a water-beating wheel 71 for beating water into the interval 40 is correspondingly arranged in the interval 40, wherein the first sub heat exchanger 10, the second sub heat exchanger 20 and the third sub heat exchanger 30 are respectively provided with a row of refrigerant pipes 60, and each row of refrigerant pipes 60 is connected to one fin 50 in a penetrating manner.

In the design, the fins 50 on the first sub heat exchanger 10, the fins 50 on the second sub heat exchanger 20 and the fins 50 on the third sub heat exchanger 30 are all flat sheets 51, and the flat sheets 51 can help water on the surfaces of the fins to drop, promote water drainage on the surfaces of the fins 50, improve defrosting efficiency, avoid the problem of easy re-frost due to accumulated melted water, and reduce the energy consumption of equipment operation.

In the second embodiment of the present invention, as shown in fig. 1, 4, 5 and 7, the difference is that the fins 50 of the second sub heat exchanger 20 and the fins 50 of the third sub heat exchanger 30 are of a composite structure, as shown in fig. 7, the fins 50 of the second sub heat exchanger 20 and the fins 50 of the third sub heat exchanger 30, the first half of which is flat sheets 51 and the second half of which is louver sheets 52, in the case that the heat exchange device is used as an evaporator and is in a defrosting condition, because the first sub heat exchanger 10 is located at the most upstream of the wind direction W, the amount of frost formed on the fins 50 is the largest, however, because the fins 50 of the first sub heat exchanger 10 are flat sheets 51, the surface melt water can be quickly drained away, and the problem that frost is easily formed again due to the accumulated melt water can be avoided; the second sub heat exchanger 20 and the first sub heat exchanger 10 and the third sub heat exchanger 30 are respectively provided with a space 40, taking the second sub heat exchanger 20 and the first sub heat exchanger 10 as an example, after wind passes through the first sub heat exchanger 10, the wind pressure in the space 40 between the second sub heat exchanger 20 and the first sub heat exchanger 10 is reduced to a certain extent, so that the wind speed on the windward side of the second sub heat exchanger 20 is suddenly reduced, water vapor is easily condensed on the front half part of the fin 50, because the front half part of the fin 50 is a flat sheet 51, the surface melted water can be quickly drained off during defrosting, the problem that the frost is easily formed again due to the accumulated water is avoided, in addition, when the heat exchange device is used as a condenser and is in a refrigeration working condition, the design that the front half part of the fin 50 is the flat sheet 51 can prevent cooling water which is pumped into the space 40 for cooling and temperature reduction from forming a water bridge on the surface of the fin 50 of the second sub heat exchanger 20, the heat dissipation efficiency of the second sub-heat exchanger 20 is ensured, and the rear half part of the fin 50 of the second sub-heat exchanger 20 is designed to be the louver 52, as shown in fig. 4 and 5, the louver 522 is arranged on the louver 52, so that the heat transfer area is large, the heat transfer efficiency is high, the whole heat transfer efficiency of the heat transfer device can be improved when the heat transfer device is in other working conditions (such as refrigeration and heating), the problem of accumulated water re-condensation can not exist due to low water vapor condensation degree near the louver, meanwhile, the amount of water reaching the louver is small when water is pumped, and the problem of a water bridge can not exist, therefore, the louver 52 is utilized to increase the heat transfer area of the fin 50, the air cooling reinforcement is utilized in the deficiency, the combined cooling efficiency of air cooling and water cooling is realized, the whole machine of the air conditioning equipment is favorably improved, and the energy efficiency can be understood that the condition of the third sub-heat exchanger 30 is similar, and will not be described in detail herein.

In the third embodiment of the present invention, as shown in fig. 1 and 8, the difference from the second embodiment is that the fin 50 of the first sub heat exchanger 10 is a composite structure, as shown in fig. 8, the front half part of the first sub heat exchanger 10 is a flat plate 51, the rear half part of the first sub heat exchanger is a louver 52, and under the condition that the heat exchange device is used as an evaporator and is in a defrosting condition, because the first sub heat exchanger is positioned at the most upstream of the wind direction W, the amount of frost is the most on the front half of the fin 50, however, since the front half of the fin 50 of the first sub heat exchanger 10 is a flat sheet 51, can realize the rapid drainage of the melted water on the surface, avoid the problem of easy frosting again caused by the accumulated melted water, the rear half part of the fin 50 of the first sub-heat exchanger 10 is designed to be the louver 52, so that the overall heat exchange efficiency of the heat exchange device can be improved when the heat exchange device is in other working conditions (such as refrigeration and heating), and the overall energy efficiency of the air conditioning equipment can be improved.

In a fourth embodiment of the present invention, as shown in fig. 9 and 10, W indicates a wind direction, the first sub heat exchanger 10, the second sub heat exchanger 20, and the third sub heat exchanger 30 are arranged at an interval 40 along the wind direction W, and a water-hammering wheel 71 is correspondingly arranged in the interval 40 for hammering water into the interval 40, wherein the first sub heat exchanger 10 and the second sub heat exchanger 20 are respectively provided with a row of refrigerant pipes 60, the third sub heat exchanger 30 is provided with two rows of refrigerant pipes 60, and each row of refrigerant pipes 60 on the several sub heat exchangers is connected to a fin 50 in a penetrating manner. In the design, the fins 50 on the first sub heat exchanger 10, the fins 50 on the second sub heat exchanger 20 and the fins 50 on the third sub heat exchanger 30 are all flat sheets 51, and the flat sheets 51 can help water on the surfaces of the fins to drop, promote water drainage on the surfaces of the fins 50, improve defrosting efficiency, avoid the problem of easy re-frost due to accumulated melted water, and reduce the energy consumption of equipment operation.

In the fifth embodiment of the present invention, as shown in fig. 9 and 11, compared with the fourth embodiment, the difference is that the fins 50 of the first sub heat exchanger 10, the second sub heat exchanger 20 and the third sub heat exchanger 30 are all composite structures, as shown in fig. 11, the fins 50 of the first sub heat exchanger 10, the second sub heat exchanger 20 and the third sub heat exchanger 30 have flat sheets 51 on the front half and louver sheets 52 on the rear half, and in the case that the heat exchange device is used as an evaporator and is in the defrosting condition, because the first sub heat exchanger 10 is located at the most upstream of the wind direction W, the frosting amount on the front half of the fins 50 is the most, however, because the front half of the fins 50 of the first sub heat exchanger 10 is flat sheets 51, the surface melted water can be quickly drained off, and the problem that the frosting is easily caused by the accumulated melted water is avoided; the second sub heat exchanger 20 and the first sub heat exchanger 10 and the third sub heat exchanger 30 are respectively provided with a space 40, taking the second sub heat exchanger 20 and the first sub heat exchanger 10 as an example, after wind passes through the first sub heat exchanger 10, wind pressure in the space 40 between the second sub heat exchanger 20 and the first sub heat exchanger 10 is reduced to a certain degree, wind speed on the windward side of the second sub heat exchanger 20 is suddenly reduced, water vapor is easily condensed on the front half part of the fin 50, because the front half part of the fin 50 is a flat sheet 51, surface melt water can be quickly drained during defrosting, the problem that frost is easily formed again due to melt water accumulation is avoided, in addition, when a heat exchange device is used as a condenser and is in a refrigerating working condition, the design that the front half part of the fin 50 is the flat sheet 51 can prevent cooling water which is pumped into the space 40 for cooling from forming a water bridge on the surface of the fin 50 of the second sub heat exchanger 20, the heat dissipation efficiency of the second sub heat exchanger 20 is ensured, and it can be understood that the situation of the third sub heat exchanger 30 is similar to that of the second sub heat exchanger 20, and is not described herein again; and the rear half parts of the fins 50 of the first sub heat exchanger 10, the second sub heat exchanger 20 and the third sub heat exchanger 30 are all designed to be louver sheets 52, so that the overall heat exchange efficiency of the heat exchange device can be improved when the heat exchange device is in other working conditions (such as refrigeration and heating), and the overall energy efficiency of the air conditioning equipment can be improved.

In the sixth embodiment of the present invention, as shown in fig. 9 and 12, compared to the fourth embodiment, the difference is that the fin 50 through which the last row of refrigerant tubes 60 of the third sub-heat exchanger 30 passes is the louver 52, wherein the fin 50 on the first sub-heat exchanger 10, the fin 50 on the second sub-heat exchanger 20, and the fin 50 through which the first row of refrigerant tubes 60 of the third sub-heat exchanger 30 passes are the flat sheets 51, the flat sheets 51 can help water on the surfaces thereof to drop, promote water drainage on the surfaces of the fins 50, improve defrosting efficiency, avoid the problem of easy re-condensation due to water accumulation, and achieve reduction of energy consumption of equipment operation, and the fin 50 through which the last row of refrigerant tubes 60 of the third sub-heat exchanger 30 passes is designed to be the louver 52, since the louver 52 is located at the most downstream of the wind direction of the whole heat exchange device, the moisture in the air is substantially condensed before, therefore, the louver 52 is designed to be the louver 52, so that the heat exchange efficiency of the whole device can be further increased, the louver 52 can be reinforced due to the fact that the air cooling can be utilized in the position of the louver 52 due to the fact that the louver 52 is insufficient in water cooling, the combined cooling efficiency of air cooling and water cooling is achieved, and the energy efficiency of the whole air conditioning device is improved.

In the seventh embodiment of the present invention, as shown in fig. 9 and 13, compared with the sixth embodiment, the difference is that the fin 50 through which the first row of refrigerant tubes 60 of the foremost end of the third sub heat exchanger 30 passes is of a composite structure, as shown in fig. 13, the fin 50 through which the first row of refrigerant tubes 60 of the foremost end of the third sub heat exchanger 30 passes is of a flat plate 51 at the front half portion thereof and is of a louver 52 at the rear half portion thereof, wherein the fin 50 on the first sub heat exchanger 10, the fin 50 on the second sub heat exchanger 20, and the fin 50 through which the first row of refrigerant tubes 60 of the foremost end of the third sub heat exchanger 30 passes are all flat plates 51 at the front half portion thereof, and the flat plates 51 can help water on the surface thereof to drop, thereby promoting water drainage of the surface of the fin 50, promoting defrosting efficiency, avoiding the problem of easy re-condensation due to water accumulation, reducing the energy consumption of the operation of the apparatus, and designing the fin 50 through which the first row of refrigerant tubes 60 of the rearmost end of the third sub heat exchanger 30 passes and the foremost row of the third The front half part of the cross-connected fin 50 is a louver 52, because the louver 52 is positioned at the most downstream wind direction of the whole heat exchange device, and the water vapor in the air is basically condensed before the water vapor is condensed, the position of the louver 52 basically has no problem of frost condensation, meanwhile, because the third sub heat exchanger 30 is of a double-tube structure, when water is injected into the space 40 between the second sub heat exchanger 20 and the third sub heat exchanger 30, the water quantity which can pass through a row of refrigerant tubes 60 at the most front end of the third sub heat exchanger 30 and the front half part of the cross-connected fin 50 to reach the louver 52 is small, and the problem of water bridge is basically avoided, therefore, the louver 52 is designed on the premise of ensuring that the heat exchange device has high frost melting efficiency and can efficiently dissipate heat when the heat exchange device is used as a condenser, the integral heat exchange efficiency of the device can be further increased, and the position of the louver 52 can be reinforced by wind cooling when the water cooling is insufficient, the combined cooling efficiency of air cooling and water cooling is realized, and the whole energy efficiency of the air conditioning equipment is favorably improved.

In the eighth embodiment of the present invention, as shown in fig. 14 and 15, W indicates a wind direction, the first sub heat exchanger 10, the second sub heat exchanger 20, and the third sub heat exchanger 30 are arranged at an interval 40 along the wind direction W, and a water-hammering wheel 71 is correspondingly arranged in the interval 40 for hammering water into the interval 40, wherein the first sub heat exchanger 10 and the second sub heat exchanger 20 are respectively provided with a row of refrigerant pipes 60, the third sub heat exchanger 30 is provided with three rows of refrigerant pipes 60, and each row of refrigerant pipes 60 on the several sub heat exchangers is connected to one fin 50 in a penetrating manner. In the design, the fins 50 on the first sub heat exchanger 10, the fins 50 on the second sub heat exchanger 20 and the fins 50 on the third sub heat exchanger 30 are all flat sheets 51, and the flat sheets 51 can help water on the surfaces of the fins to drop, promote water drainage on the surfaces of the fins 50, improve defrosting efficiency, avoid the problem of easy re-frost due to accumulated melted water, and reduce the energy consumption of equipment operation.

In the ninth embodiment of the present invention, as shown in fig. 14 and 16, compared with the eighth embodiment, the difference is that first, the front half of the fin 50 through which the second sub heat exchanger 20 is connected is a flat plate 51, the rear half is a louver 52, the second sub heat exchanger 20 and the first sub heat exchanger 10 have a space 40 therebetween, after the wind passes through the first sub heat exchanger 10, the wind pressure is reduced to a certain extent in the space 40 between the second sub heat exchanger 20 and the first sub heat exchanger 10, the wind speed on the windward side of the second sub heat exchanger 20 is suddenly reduced, the water vapor is easily condensed in the front half of the fin 50, since the front half of the fin 50 is the flat plate 51, the surface melt water can be quickly drained off during defrosting, the problem that the frost is easily formed again due to the accumulation of the melt water can be avoided, and in addition, when the heat exchange device is used as a condenser and is in a cooling operation, the design that the front half of the fin 50 is the flat plate 51 can prevent the cooling water injected into the space 40 for cooling from being cooled in the second sub heat exchanger A water bridge is formed on the surface of the fin 50 of the second sub heat exchanger 20 to ensure the heat dissipation efficiency of the second sub heat exchanger 20; next, the fin 50 through which the first row of refrigerant tubes 60 at the foremost end of the third sub heat exchanger 30 are inserted is of a composite structure, as shown in fig. 16, the fin 50 through which the first row of refrigerant tubes 60 at the foremost end of the third sub heat exchanger 30 are inserted is a flat plate 51, the rear half is a louver 52, and the fin 50 through which the first row of refrigerant tubes 60 at the rearmost end of the third sub heat exchanger 30 are inserted is a louver 52, because the louver 52 is located at the most downstream position of the wind direction of the whole heat exchange device, and the water vapor in the air is basically condensed before the louver, the portion of the louver 52 has no problem of frost condensation, meanwhile, because the third sub heat exchanger 30 is of a double-tube structure, when water is injected into the space 40 between the second sub heat exchanger 20 and the third sub heat exchanger 30, the amount of water which can pass through the first row of refrigerant tubes 60 at the foremost end of the third sub heat exchanger 30 and the front half of the fins 50 through which the third sub heat exchanger 30, the problem of water bridge basically can not appear, so, guaranteeing that heat transfer device defrosting is high-efficient, and guarantee that heat transfer device can high-efficient radiating prerequisite when as the condenser under, design this department and be shutter 52, can further increase the holistic heat exchange efficiency of device to make this shutter 52 position can utilize the forced air cooling reinforcement in the water-cooling weak point, realize forced air cooling and water-cooled combination cooling efficiency, do benefit to the complete machine efficiency that promotes air conditioning equipment.

In the tenth embodiment of the present invention, as shown in fig. 14 and 17, compared with the ninth embodiment, the difference is that the fin 50 of the first sub heat exchanger 10 is a composite structure, as shown in fig. 17, the fin 50 of the first sub heat exchanger 10, the first half of which is a flat sheet 51 and the second half of which is a louver sheet 52, in the case that the heat exchange device is used as an evaporator and is in the defrosting mode, the frost formation amount on the first half of the fin 50 is the largest because the first sub heat exchanger 10 is located at the most upstream of the wind direction W, however, because the first half of the fin 50 of the first sub heat exchanger 10 is a flat sheet 51, the surface melted water can be quickly drained off, the problem that frost formation is easy again because of melted water accumulation is avoided, and the second half of the fin 50 of the first sub heat exchanger 10 is a louver sheet 52, so that the heat exchange efficiency of the heat exchange device as a whole can be improved when the heat exchange device is in other modes (such as cooling and heating), so as to be beneficial to improving the whole energy efficiency of the air conditioning equipment.

An embodiment of the second aspect of the present invention provides an air conditioning apparatus (not shown in the drawings), including the heat exchanging device described in any of the above technical solutions.

In summary, in the heat exchange device and the air conditioning equipment provided by the present invention, the front half of the fin through which the row of refrigerant tubes located at the most upstream in the wind direction in each sub heat exchanger in the heat exchange device passes is designed to be a flat sheet, that is, the front half of the fin at the windward side of each sub heat exchanger is designed to be a flat sheet, and compared with the fins such as a slit sheet and a corrugated sheet, the surface of the flat sheet is relatively smooth, so that the cooling water on the surface can drop off and drip off, for the sub heat exchanger located at the most upstream in the wind direction in the plurality of sub heat exchangers, because most of the water vapor in the air is intensively condensed on the front half of the fin under the heating working condition, the front half of the fin of the sub heat exchanger located at the most upstream in the wind direction is designed to be a flat sheet, so as to help to quickly drain off the melted water on the surface under the defrosting working condition, improve the defrosting efficiency, and avoid the problem that the melted water is easily condensed again, for the other sub heat exchangers except for the sub heat exchangers located at the most upstream, because there is the interval space between the adjacent sub heat exchanger and makes the wind pressure have certain decline, lead to the sub heat exchanger in the downwind direction to appear the condition of frosting easily, design this sub heat exchanger in the downwind direction's fin first half is the plain film, can help to change the defrosting under the operating mode with the water on its surface arrange fast to the greatest extent, promote the efficiency of defrosting to avoid the problem of the easy frost of once more because of melting water accumulation.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat exchange device, comprising:

the heat exchanger comprises at least two sub heat exchangers which are arranged at intervals along the wind direction, each sub heat exchanger comprises a fin and at least one row of refrigerant pipes which are connected with the fin in a penetrating mode, each fin comprises a front half part and a rear half part, and the front half part is located at the upstream of the rear half part in the wind direction;

in each sub heat exchanger, at least the front half part of a fin through which a row of refrigerant pipes positioned at the most upstream in the wind direction penetrate is a flat sheet;

in the at least two sub-heat exchangers, all the fins at the most upstream in the wind direction are flat sheets;

in the at least two sub heat exchangers, the pipe pitch of the refrigerant pipe of the most upstream part in the wind direction is larger than or equal to that of the refrigerant pipes of other sub heat exchangers.

2. The heat exchange device of claim 1,

in each sub heat exchanger, the rear half part of the fin, through which a row of refrigerant pipes located at the most upstream in the wind direction passes, is a flat sheet.

3. The heat exchange device according to claim 1 or 2,

in each of the sub heat exchangers, the fins through which the refrigerant tubes of the other rows except the row located most upstream in the wind direction penetrate are one or a combination of flat sheets, louver sheets, corrugated sheets and slit sheets.

4. The heat exchange device according to claim 1 or 2,

and for the condition that a plurality of rows of refrigerant pipes are arranged on the sub-heat exchangers, the plurality of rows of refrigerant pipes on the same sub-heat exchanger are in penetrating connection with the same integral fin, or the plurality of rows of refrigerant pipes on the same sub-heat exchanger are correspondingly in penetrating connection with a plurality of single-row fins.

5. The heat exchange device according to claim 1 or 2,

in the at least two sub heat exchangers, the pipe diameter of the refrigerant pipe of the most upstream sub heat exchanger in the wind direction is less than or equal to the pipe diameters of the refrigerant pipes of the other sub heat exchangers.

6. The heat exchange device according to claim 1 or 2,

the number of the sub heat exchangers is 3.

7. The heat exchange device according to claim 1 or 2,

the at least two sub heat exchangers comprise a first sub heat exchanger, a second sub heat exchanger and a third sub heat exchanger which are sequentially arranged along the wind direction, and the number of tube columns of the first sub heat exchanger, the second sub heat exchanger and the third sub heat exchanger is 1 column, 1 column and 1 row, or 1 column, 2 columns and 1 row, or 1 column, 1 column and 2 columns, or 1 column, 2 columns and 2 rows, or 1 column, 1 column and 3 columns.

8. The heat exchange device of claim 1 or 2, further comprising:

and the water cooling device is used for delivering water to the interval between the adjacent sub heat exchangers.

9. The heat exchange device of claim 8,

the water cooling device comprises a water spraying device, the water spraying device comprises nozzles for spraying water, and at least one nozzle is correspondingly arranged at the same interval; and/or

The water cooling device comprises a water pumping device, the water pumping device comprises a water pumping wheel, and at least one water pumping wheel is correspondingly arranged at the same interval.

10. An air conditioning apparatus, characterized by comprising the heat exchange device according to any one of claims 1 to 9.