CN210861409U - Heat exchanger assembly and air conditioner indoor unit with same - Google Patents
Heat exchanger assembly and air conditioner indoor unit with same Download PDFInfo
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- CN210861409U CN210861409U CN201922097151.4U CN201922097151U CN210861409U CN 210861409 U CN210861409 U CN 210861409U CN 201922097151 U CN201922097151 U CN 201922097151U CN 210861409 U CN210861409 U CN 210861409U
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
The utility model discloses a machine in heat exchanger subassembly and the air conditioning that has it, heat exchanger subassembly includes: the main heat exchanger comprises a front heat exchanger and a rear heat exchanger, the front heat exchanger comprises a middle heat exchange part and a front heat exchange part, the upper end of the middle heat exchange part is spliced with the upper end of the rear heat exchanger, the upper end of the front heat exchange part is integrally connected with the lower end of the middle heat exchange part, the front heat exchanger comprises a first heat exchange tube, and the rear heat exchanger comprises a second heat exchange tube; the back pipe heat exchanger is arranged on the windward side of the main heat exchanger and is provided with a third heat exchange pipe; when the heat exchanger assembly refrigerates, the refrigerant flows to the first heat exchange tube and the second heat exchange tube of the main heat exchanger from the third heat exchange tube of the back tube heat exchanger. According to the utility model discloses a heat exchanger assembly can practice thrift production man-hour, and reduction in production cost just can improve heat exchanger assembly's heat transfer efficiency when not increasing the shared space of heat exchanger assembly installation.
Description
Technical Field
The utility model belongs to the technical field of air treatment equipment, particularly, relate to a heat exchanger assembly and air conditioning indoor unit who has it.
Background
The current evaporator which is required to improve the energy efficiency generally adopts the method of increasing the length of a heat exchange pipe, and correspondingly, the size of an internal machine is also increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a heat exchanger assembly, heat exchanger assembly practices thrift man-hour of production and then reduce cost can improve heat exchanger assembly's heat transfer efficiency simultaneously when not increasing the shared space of heat exchanger assembly installation.
The utility model also provides an indoor unit of air conditioner, including foretell heat exchanger assembly.
According to the utility model discloses heat exchanger assembly, include: the main heat exchanger comprises a front heat exchanger and a rear heat exchanger, the front heat exchanger comprises a middle heat exchange part and a front heat exchange part, the upper end of the middle heat exchange part is spliced with the upper end of the rear heat exchanger, the upper end of the front heat exchange part is integrally connected with the lower end of the middle heat exchange part, the front heat exchanger comprises a first heat exchange tube, and the rear heat exchanger comprises a second heat exchange tube; the back pipe heat exchanger is arranged on the windward side of the main heat exchanger and is provided with a third heat exchange pipe; when the heat exchanger assembly refrigerates, the refrigerant flows to the first heat exchange tube and the second heat exchange tube of the main heat exchanger from the third heat exchange tube of the back tube heat exchanger.
According to the utility model discloses heat exchanger assembly is as a whole with preceding heat transfer portion and well heat transfer portion, can reduce the production degree of difficulty of preceding heat transfer portion and well heat transfer portion from this, makes things convenient for heat exchanger assembly's overall assembly simultaneously, practices thrift man-hour, and then reduction in production cost. Meanwhile, the back pipe heat exchanger is arranged on the windward side of the main heat exchanger, and when the heat exchanger assembly refrigerates, the refrigerant flows to the first heat exchange pipe and the second heat exchange pipe of the main heat exchanger through the third heat exchange pipe of the back pipe heat exchanger, so that the structure and the flow path can improve the heat exchange efficiency of the heat exchanger assembly while the length of the heat exchange pipes is not increased and the occupied space of the heat exchanger assembly is not increased.
According to some embodiments of the utility model, the diameter of first heat exchange tube is less than the diameter of second heat exchange tube, the diameter of second heat exchange tube is less than the diameter of third heat exchange tube, heat exchanger assembly's heat transfer flow path includes first flow path, the second flow path, third flow path and fourth flow path, first flow path flows through the third heat exchange tube of back of the body heat exchanger, the second flow path flows through the second heat exchange tube of back heat exchanger, the first heat exchange tube of heat exchanger before the fourth flow path flows through, when heat exchanger assembly refrigerates, the refrigerant flows through first flow path in proper order, the second flow path, third flow path and fourth flow path.
Further, the diameter of the third heat exchange tube is 7mm, the diameter of the second heat exchange tube is 6mm, and the diameter of the first heat exchange tube is 5 mm.
Further, the back pipe heat exchanger comprises a first back pipe heat exchanger and a second back pipe heat exchanger, the first back pipe heat exchanger is located on the windward side of the back heat exchanger, the second back pipe heat exchanger is located on the windward side of the front heat exchange portion, the first flow path comprises a first sub flow path and a second sub flow path, the first sub flow path flows through a third heat exchange pipe of the first back pipe heat exchanger, the second sub flow path flows through a third heat exchange pipe of the second back pipe heat exchanger, and when the heat exchanger assembly is used for refrigerating, refrigerant sequentially flows through the first sub flow path and the second sub flow path.
Furthermore, the second flow path comprises a first main path, a first branch path, a second branch path and a third branch path which are formed by shunting from the first main path, all the second heat exchange tubes of the heat exchanger are shared by the first main path, the first branch path, the second branch path and the third branch path, and when the heat exchanger assembly is used for refrigerating, a refrigerant is simultaneously shunted after flowing through the first main path and enters the first branch path, the second branch path and the third branch path.
Further, the second heat exchange tubes of the rear heat exchanger comprise outer heat exchange tubes, the first main path flows through the outer heat exchange tubes, and the first branch, the second branch and the third branch share the rest of the second heat exchange tubes on the rear heat exchanger.
Further, the rear heat exchanger further comprises a middle row of heat exchange tubes and an inner row of heat exchange tubes, the outer row of heat exchange tubes, the middle row of heat exchange tubes and the inner row of heat exchange tubes are sequentially arranged along the airflow flowing direction, and the first branch, the second branch and the third branch flow to the second heat exchange tubes in the inner row of heat exchange tubes from the second heat exchange tubes in the middle row of heat exchange tubes.
Further, the number of the second heat exchange tubes in the first branch, the second branch and the third branch is the same.
Further, the first main path and the first branch path, and the second branch path and the third branch path are connected through a first distributor.
Further, the fourth flow path includes: the heat exchanger comprises a fifth branch, a sixth branch, a seventh branch, an eighth branch, a ninth branch and a tenth branch, wherein the fifth branch, the sixth branch, the seventh branch, the eighth branch, the ninth branch and the tenth branch share all first heat exchange tubes of the front heat exchanger, and the fifth branch, the sixth branch, the seventh branch, the eighth branch, the ninth branch and the tenth branch flow to first heat exchange tubes on the leeward side of the front heat exchanger from first heat exchange tubes on the windward side of the front heat exchanger.
Further, the number of the first heat exchange tubes in the fifth branch, the sixth branch, the seventh branch, the eighth branch, the ninth branch and the tenth branch is the same.
Further, the third flow path is connected to the fifth branch, the sixth branch, the seventh branch, the eighth branch, the ninth branch, and the tenth branch via a second distributor.
According to some embodiments of the invention, the front heat exchanger has at least three rows of first heat exchange tubes in the direction of airflow flow, and/or the rear heat exchanger has at least three rows of second heat exchange tubes in the direction of airflow flow.
According to some embodiments of the present invention, the number of heat exchange tubes of the main heat exchanger is greater than or equal to 30.
According to the utility model discloses machine in air conditioning, include: a housing; the wind wheel is arranged in the shell; in the heat exchanger assembly, the heat exchanger assembly is arranged in the shell and is positioned on the air inlet side of the wind wheel.
According to the utility model discloses machine in air conditioning is as a whole with preceding heat transfer portion and well heat transfer portion, can reduce the production degree of difficulty of preceding heat transfer portion and well heat transfer portion from this, makes things convenient for heat exchanger assembly's whole assembly simultaneously, practices thrift man-hour, and then reduction in production cost. Meanwhile, the back pipe heat exchanger is arranged on the windward side of the main heat exchanger, and when the heat exchanger assembly is used for refrigerating, the refrigerant flows to the first heat exchange pipe and the second heat exchange pipe of the main heat exchanger from the third heat exchange pipe of the back pipe heat exchanger, so that the heat exchange efficiency of the heat exchanger assembly can be improved while the length of the heat exchange pipes is not increased and the occupied space for installing the heat exchanger assembly is not increased, and further the heat exchange efficiency of the indoor unit of the air conditioner can be increased under the condition that the whole size of the indoor unit of the air conditioner is not increased.
Further, the angle between the rear heat exchanger and the vertical direction is α, and α degrees is equal to or less than 48 degrees.
Further, the distance between the main heat exchanger and the wind wheel is L, and L meets the following requirements: l is more than or equal to 10 mm.
Further, the width dimension of the housing in the front-back direction is not more than 800mm, and the height dimension of the housing in the up-down direction is not more than 300 mm.
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 cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flow path arrangement of a heat exchanger assembly according to an embodiment of the present invention.
Reference numerals:
the heat exchanger assembly 1, the main heat exchanger 10, the front heat exchanger 10a,
a front heat exchanging part 11, a first heat exchanging pipe 110, a fifth branch 111, a sixth branch 112,
a middle heat exchange part 12, a seventh branch 121, an eighth branch 122, a ninth branch 123, a tenth branch 124,
a rear heat exchanger 13, a second heat exchange tube 130, a first main path 131, a first branch 132, a second branch 133, a third branch 134, an outer row of heat exchange tubes a, a middle row of heat exchange tubes b, an inner row of heat exchange tubes c,
the transition duct 14 is provided with a transition duct,
a back pipe heat exchanger 20, a third heat exchange pipe 201, a first back pipe heat exchanger 20aa, a second back pipe heat exchanger 20bb, a first distributor 30, a second distributor 40,
a first channel A, a first sub-channel A1, a second sub-channel A2, a second channel B, a third channel C, a fourth channel D,
the air conditioner indoor unit 1000, a shell 2, a wind wheel 3 and an air outlet 21.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
The heat exchanger assembly 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the utility model discloses a be applied to wall-hanging air conditioning indoor set 1000 for heat exchanger assembly 1, air conditioning indoor set 1000 includes casing 2 and is located casing 2 wind wheel 3, and heat exchanger assembly 1 is located between casing 2 and the wind wheel 3 to carry out the heat transfer to the inspiratory air of wind wheel 3, wherein, wind wheel 3 can be the cross flow wind wheel.
It is understood that the heat exchanger assembly 1 can be applied to an air conditioner or an indoor unit 1000 or an outdoor unit.
As shown in fig. 1, according to the utility model discloses heat exchanger assembly 1, include: a main heat exchanger 10 and a back tube heat exchanger 20.
Specifically, the main heat exchanger 10 includes a front heat exchanger 10a and a rear heat exchanger 13, the front heat exchanger 10a includes a middle heat exchanging portion 12 and a front heat exchanging portion 11, an upper end of the middle heat exchanging portion 12 is spliced with an upper end of the rear heat exchanger 13, and an upper end of the front heat exchanging portion 11 is integrally connected with a lower end of the middle heat exchanging portion 12. Wherein, preceding heat transfer portion 11 and well heat transfer portion 12 body coupling indicates that the fin on preceding heat transfer portion 11 and the well heat transfer portion 12 is integrative, and every fin is all including the preceding heat transfer region who is located preceding heat transfer portion 11 and the well heat transfer region who is located well heat transfer portion 12, regard preceding heat transfer portion 11 and well heat transfer portion 12 as a whole, can reduce the production degree of difficulty of preceding heat transfer portion 11 and well heat transfer portion 12 from this, make things convenient for the whole assembly of heat exchanger component 1 simultaneously, and save man-hour, and then reduction in production cost.
For the shape of adaptation wind wheel 3 better, further be close to wind wheel 3, the medial surface of preceding heat exchanger 10a can set up to the cambered surface design of orientation lordosis, the medial surface of back heat exchanger 13 can set up to the cambered surface setting of orientation kyphosis, make the air current of flowing through heat exchanger subassembly 1 more smooth and easy, under the same operating power of wind wheel 3, so the design can make the air current velocity of flow through heat exchanger subassembly 1 bigger, thereby promote heat exchanger subassembly 1's heat transfer efficiency.
It is understood that, as shown in fig. 1, the side of the assembled air conditioning indoor unit 1000 facing the user is front, and the side facing the wall is rear, and the wall-mounted air conditioning indoor unit 1000 adopts a conventional structure with an upper air inlet and a lower air outlet 21, that is, the heat exchanger assembly 1 is located upstream of the wind wheel 3.
The front heat exchanger 10a includes a first heat exchange pipe 110, and the rear heat exchanger 13 includes a second heat exchange pipe 130. The back-tube heat exchanger 20 is disposed on the windward side of the main heat exchanger 10, and as shown in fig. 1, the heat exchange capacity of the heat exchanger assembly 1 can be increased by disposing the back-tube heat exchanger 20 on the windward side of the main heat exchanger 10, i.e., on the upstream side of the main heat exchanger 10 in the airflow flowing direction. The back tube heat exchanger 20 is provided with a third heat exchange tube 201, according to the arrangement of a wind field, the air flow at the position close to the air inlet flows faster, the air flow at the position far away from the air inlet flows relatively slower, and when the temperature difference between the refrigerant and the air flow at the position where the air flow flows faster is larger than that at the position where the air flow flows slower, the heat exchange efficiency of the heat exchanger assembly 1 is better. Therefore, when the heat exchanger assembly 1 is used for refrigeration, the part of the heat exchanger assembly 1 close to the air inlet flows to the part far away from the heat exchanger assembly 1, so that the heat exchange efficiency of the heat exchanger assembly 1 is better, and when the heat exchanger assembly 1 is used for refrigeration, the refrigerant flows to the first heat exchange tube 110 and the second heat exchange tube 130 of the main heat exchanger 10 from the third heat exchange tube 201 of the back tube heat exchanger 20, so that the heat exchange efficiency of the heat exchanger assembly 1 is better.
According to the utility model discloses heat exchanger component 1, with preceding heat transfer portion 11 and well heat transfer portion 12 as a whole, can reduce the production degree of difficulty of preceding heat transfer portion 11 and well heat transfer portion 12 from this, makes things convenient for heat exchanger component 1's whole assembly simultaneously, practices thrift man-hour, and then reduction in production cost. Meanwhile, the back pipe heat exchanger 20 is arranged on the windward side of the main heat exchanger 10, and when the heat exchanger assembly 1 is used for refrigerating, the refrigerant flows to the first heat exchange pipe 110 and the second heat exchange pipe 130 of the main heat exchanger 10 from the third heat exchange pipe 201 of the back pipe heat exchanger 20, so that the heat exchange efficiency of the heat exchanger assembly 1 can be improved while the length of the heat exchange pipes is not increased and the occupied space for installing the heat exchanger assembly 1 is not increased.
As can be seen from table 1, the flow direction of the refrigerant in different pipe diameters during heating affects the energy efficiency (APF). During heating, the refrigerant flows through the small-diameter pipeline and then flows through the large-diameter pipeline, and the energy efficiency is higher than that of the refrigerant which flows through the large-diameter pipeline and then flows through the small-diameter pipeline; on the contrary, during refrigeration, the refrigerant flows into the small-diameter pipeline after flowing through the large-diameter pipeline firstly, the energy efficiency is higher than that of the refrigerant flowing through the large-diameter pipeline after flowing through the small-diameter pipeline firstly, the pipe diameter is gradually reduced in the process that the refrigerant is in a gas state to a liquid state, and the contact heat exchange area between the refrigerant and the wall surface of the heat exchange pipe is increased.
TABLE 1
| Combined pipe diameter refrigerant flow direction | APF |
| During heating, the water enters the small pipe diameter first and then is gathered to enter the large pipe diameter | 7.45 |
| During heating, the water enters the large pipe diameter firstly and then is shunted to enter the small pipe diameter | 7.15 |
Therefore, in some embodiments of the present invention, the diameter of the first heat exchanging pipe 110 is smaller than that of the second heat exchanging pipe 130, and the diameter of the second heat exchanging pipe 130 is smaller than that of the third heat exchanging pipe 201, so that the heat exchanging efficiency of the heat exchanger assembly 1 is better. In addition, the material of heat exchange tube can be reduced to the heat exchange tube that adopts little pipe diameter, is showing the whole cost that reduces heat exchanger assembly 1 then, but when the refrigerant passes through the heat exchange tube of little pipe diameter, heat transfer resistance is big, and loss of pressure is big, is unfavorable for the circulation of refrigerant, needs the cost and the refrigerant circulation flow efficiency problem of comprehensive consideration heat exchanger assembly 1. Therefore, the diameter of the first heat exchange tube 110 is smaller than that of the second heat exchange tube 130, and the diameter of the second heat exchange tube 130 is smaller than that of the third heat exchange tube 201, so that the production cost of the heat exchanger assembly 1 can be reduced while the heat exchange efficiency of the heat exchanger assembly 1 is better ensured.
The heat exchange flow path of the heat exchanger assembly 1 comprises a first flow path A, a second flow path B, a third flow path C and a fourth flow path D, the first flow path A flows through the third heat exchange tube 201 of the back tube heat exchanger 20, the second flow path B flows through the second heat exchange tube 130 of the rear heat exchanger 13, the fourth flow path D flows through the first heat exchange tube 110 of the front heat exchanger 10a, when the heat exchanger assembly 1 is used for refrigeration, a refrigerant sequentially flows through the first flow path A, the second flow path B, the third flow path C and the fourth flow path D, the refrigerant flows into the small-diameter pipeline after flowing through the large-diameter pipeline, and therefore the heat exchange energy efficiency of the heat exchanger assembly 1 is better.
The third flow path C may be a transition pipe 14 connected between the second flow path B and the fourth flow path D, for example, when the second distributor 40 is further included in the heat exchanger assembly 1, the third flow path C may be a transition pipe 14 connected between the second flow path B and the second distributor 40. Generally, the heat exchange tube in the heat exchanger assembly 1 is a copper tube.
Further, the diameter of the third heat exchange pipe 201 is 7mm, the diameter of the second heat exchange pipe 130 is 6mm, and the diameter of the first heat exchange pipe 110 is 5 mm. As can be seen from table 2, when the diameter of the second heat exchanging pipe 130 is 6mm, the heat exchanging efficiency of the heat exchanger assembly 1 is better than that when the diameter of the second heat exchanging pipe 130 is 5 mm. It can be understood that the heat exchange tubes with the diameter of 7mm, the diameter of 6mm and the diameter of 5mm are widely used in the prior art, so that the heat exchange tubes with the three tube diameters are favorable for reducing the difficulty in obtaining the heat exchange tubes, and the manufacturing cost of the heat exchanger assembly 1 can be reduced while the heat exchange energy efficiency of the heat exchanger assembly 1 is ensured.
TABLE 2
| Second |
APF |
| 6mm | 7.35 |
| 5mm | 7.15 |
Further, as shown in fig. 1, the back tube heat exchanger 20 includes a first back tube heat exchanger 20a and a second back tube heat exchanger 20b, the first back tube heat exchanger 20a is located on the windward side of the rear heat exchanger 13, the second back tube heat exchanger 20b is located on the windward side of the front heat exchanging portion 11, and since the rear heat exchanger 13 is close to the air inlet, the airflow velocity is higher, and the requirement for the temperature difference between the refrigerant and the airflow is higher, therefore, the energy efficiency of the heat exchanger assembly 1 can be better by providing the first back tube heat exchanger 20a on the windward side of the rear heat exchanger 13, and since the number of the first heat exchange tubes 110 in the front heat exchanging portion 11 is small, and the diameter of the first heat exchange tubes 110 is the smallest, the heat exchange capacity is low, and by providing the second back tube heat exchanger 20b on the windward side of the front heat exchanging portion 11, the heat exchange energy efficiency of the. However, the present application is not limited thereto, and in the present embodiment, as can be seen from fig. 1 and 2, the difference between the fin area size shape of the rear heat exchanger 13 and the fin area size shape of the middle heat exchanging portion 12 is not large, the number of the second heat exchanging pipes 130 of the rear heat exchanger 13 and the number of the first heat exchanging pipes 110 of the middle heat exchanging portion 12 are not large, and both the rear heat exchanger 13 and the middle heat exchanging portion 12 are close to the air intake, so that the first back pipe heat exchanger 20a may also be provided on the windward side of the middle heat exchanging portion 12. Of course, the first back pipe heat exchanger 20a may be provided on both the windward side of the rear heat exchanger 13 and the windward side of the middle heat exchanging portion 12. The first flow path a comprises a first sub-flow path a1 and a second sub-flow path a2, the first sub-flow path a1 flows through the third heat exchange tube 201 of the first back tube heat exchanger 20a, and the second sub-flow path a2 flows through the third heat exchange tube 201 of the second back tube heat exchanger 20b, because the first back tube heat exchanger 20a is closer to the air inlet than the second back tube heat exchanger 20b, the air flow velocity is higher, and the requirement for the temperature difference between the refrigerant and the air flow is higher, when the heat exchanger assembly 1 is used for refrigeration, the refrigerant flows through the first sub-flow path a1 and the second sub-flow path a2 in sequence, so that the heat exchange efficiency of the heat exchanger assembly 1 can be better.
Further, as shown in fig. 2, the second flow path B includes a first main path 131, and a first branch path 132, a second branch path 133, and a third branch path 134 branched from the first main path 131, and the first main path 131, the first branch path 132, the second branch path 133, and the third branch path 134 divide all the second heat exchange tubes 130 of the heat exchanger 13, when the heat exchanger assembly 1 is used for refrigeration, a refrigerant flows through the first main path 131, then is simultaneously branched into the first branch path 132, the second branch path 133, and the third branch path 134, and the refrigerant is branched after flowing through the first main path 131, so that the heat exchange efficiency of the heat exchanger assembly 1 is better.
Further, as shown in fig. 1, the second heat exchange tubes 130 of the rear heat exchanger 13 include outer heat exchange tubes a, the first main path 131 flows through the outer heat exchange tubes a, since the airflow velocity of the rear heat exchanger 13 on the windward side is faster than the airflow velocity on the leeward side, the temperature difference between the refrigerant and the airflow required on the windward side of the rear heat exchanger 13 is larger, the energy efficiency of the heat exchanger assembly 1 is better, since the outer heat exchange tubes a are located at the windward side of the rear heat exchanger 13, the air volume adapts to the higher energy of the refrigerant, the first main path 131 flows through the outer heat exchange tubes a which are firstly overcooled and then flow into the first branch 132, the second branch 133 and the third branch 134, and the first branch 132, the second branch 133 and the third branch 134 share the rest of the second heat exchange tubes 130 on the rear heat exchanger 13, thereby the heat exchange efficiency of the heat.
Further, as shown in fig. 1, the rear heat exchanger 13 further includes a middle row of heat exchange tubes b and an inner row of heat exchange tubes c, the outer row of heat exchange tubes a, the middle row of heat exchange tubes b and the inner row of heat exchange tubes c are sequentially arranged along the airflow flowing direction, and the first branch 132, the second branch 133 and the third branch 134 all flow from the second heat exchange tube 130 in the middle row of heat exchange tubes b to the second heat exchange tube 130 in the inner row of heat exchange tubes c, so that the possibility that the first branch 132, the second branch 133 or the third branch 134 flows to the inner row of heat exchanger after the middle row of heat exchangers is finished flowing is avoided, the possibility that the flow direction of the refrigerant in the first branch 132, the second branch 133 and the third branch 134 is changed is reduced, and the design of three flow paths is simplified. Meanwhile, the rear heat exchanger 13 is enabled to be from the windward side to the leeward side, the temperature of each refrigerant on the same straight line of the length direction of the rear heat exchanger 13 is approximately the same, and the air flow velocity approximately the same on the same straight line is matched, so that the heat exchange efficiency of the heat exchanger assembly 1 can be further improved.
Further, the number of the second heat exchange tubes 130 in the first, second and third branches 132, 133 and 134 is the same. Generally, the difference between every two adjacent branches in the number of heat exchange tubes is less than or equal to 3, so that the heat exchange efficiency is better, and the number of the second heat exchange tubes 130 in the first branch 132, the second branch 133 and the third branch 134 is set to be the same, so that the design of the flow path can be further simplified on the premise of meeting the requirement of better heat exchange efficiency.
Further, as shown in fig. 2, the first main path 131 and the first branch path 132, and the second branch path 133 and the third branch path 134 are connected by the first distributor 30, so that the refrigerant flowing out of the first main path 131 is collected by the first distributor 30 and then branched to simultaneously enter the first branch path 132, the second branch path 133 and the third branch path 134.
TABLE 3
| Flow path arrangement mode | APF |
| 7 in and 7 out | 7.30 |
| 6 in and 6 out | 7.45 |
| 5 in and 5 out | 7.35 |
Further, as shown in fig. 2, the fourth flow path D includes: the fifth branch 111, the sixth branch 112, the seventh branch 121, the eighth branch 122, the ninth branch 123 and the tenth branch 124, the fifth branch 111, the sixth branch 112, the seventh branch 121, the eighth branch 122, the ninth branch 123 and the tenth branch 124 share all the first heat exchange tubes 110 of the front heat exchanger 10a, and the fifth branch 111, the sixth branch 112, the seventh branch 121, the eighth branch 122, the ninth branch 123 and the tenth branch 124 all flow from the first heat exchange tube 110 on the windward side of the front heat exchanger 10a to the first heat exchange tube 110 on the leeward side of the front heat exchanger 10 a. As can be seen from table 3, the refrigerant flowing out of the rear heat exchanger 13 is divided into 6 paths, and the heat exchange efficiency of the heat exchanger assembly 1 is the best, so the fourth flow path D is divided into six paths. And the fifth branch 111, the sixth branch 112, the seventh branch 121, the eighth branch 122, the ninth branch 123 and the tenth branch 124 all flow from the first heat exchange tube 110 on the windward side of the front heat exchanger 10a to the first heat exchange tube 110 on the leeward side of the front heat exchanger 10a, so that the fifth branch 111, the sixth branch 112, the seventh branch 121, the eighth branch 122, the ninth branch 123 and the tenth branch 124 can avoid the possibility that all the first heat exchange tubes 110 on the windward side of the front heat exchanger 10a need to be flowed to the first heat exchange tubes 110 on the leeward side of the front heat exchanger 10a, the possibility that the refrigerant in the six branches needs to change the flow direction in order to flow to all the first heat exchange tubes 110 on the windward side of the front heat exchanger 10a is reduced, and the flow path design of the six branches is simplified. Meanwhile, the front heat exchanger 10a is enabled to be from the windward side to the leeward side, the temperature of each refrigerant at each position on the same straight line in the length direction of the front heat exchanger 10a is approximately the same, and the air flow speed approximately the same at the same straight line is matched, so that the heat exchange efficiency of the heat exchanger assembly 1 can be further improved.
Further, the number of the first heat exchange tubes 110 in the fifth, sixth, seventh, eighth, ninth and tenth branches 111, 112, 121, 122, 123 and 124 is the same. As shown in table 4, the number of the heat exchange tubes of the sixth branch 111, the sixth branch 112, the seventh branch 121, the eighth branch 122, the ninth branch 123 and the tenth branch 124 is set to be the same, so that the heat exchange efficiency of the heat exchanger assembly 1 is better, and the flow path design of the six branches can be simplified.
TABLE 4
| Branch copper pipe number distribution mode | APF |
| 4+4+4+4+4+4 | 7.45 |
| 4+3+5+4+4+4 | 7.40 |
| 4+4+3+5+4+4 | 7.42 |
| 4+4+4+3+5+4 | 7.36 |
| 4+4+4+4+3+5 | 7.35 |
Further, as shown in fig. 2, the third flow path C is connected to the fifth branch 111, the sixth branch 112, the seventh branch 121, the eighth branch 122, the ninth branch 123, and the tenth branch 124 by the second distributor 40, so that the refrigerant flowing out of the rear heat exchanger 13 can be collected in the second distributor 40 and can be divided by the second distributor 40 by the corresponding number of flow paths.
In some embodiments of the present invention, the front heat exchanger 10a has at least three rows of first heat exchange tubes 110 in the airflow flowing direction, and/or the rear heat exchanger 13 has at least three rows of second heat exchange tubes 130 in the airflow flowing direction, thereby avoiding insufficient heat exchange due to too few rows of heat exchange tubes and preventing waste due to too many heat exchange tubes.
According to the utility model discloses a some embodiments, the quantity more than or equal to 30 of main heat exchanger 10's heat exchange tube can make heat exchanger component 1's heat transfer efficiency better from this.
According to the utility model discloses machine 1000 in air conditioning, as shown in FIG. 1, include: a housing 2, a wind wheel 3 and the above-mentioned heat exchanger assembly 1.
Specifically, the wind wheel 3 is arranged in the shell 2, and the heat exchanger assembly 1 is arranged in the shell 2 and located on the air inlet side of the wind wheel 3, so that air flow can be driven by the wind wheel 3 to be sent out of the indoor air conditioner 1000 after heat exchange of the heat exchanger assembly 1, and the heat exchange efficiency of the indoor air conditioner 1000 is better.
In this embodiment, the cross-flow wind wheel is selected as the wind wheel 3, the diameter of the cross-flow wind wheel is 115 mm-128 mm, and on the basis of the structure, in order to enable the air-conditioning indoor unit 1000 to have higher heat exchange energy efficiency, the number of heat exchange tubes of the heat exchanger assembly 1 is not less than 30.
According to the utility model discloses machine 1000 in air conditioning, as a whole with preceding heat transfer portion 11 and well heat transfer portion 12, can reduce the production degree of difficulty of preceding heat transfer portion 11 and well heat transfer portion 12 from this, make things convenient for the whole assembly of heat exchanger unit 1 simultaneously, practice thrift man-hour, and then reduction in production cost. Meanwhile, the back pipe heat exchanger 20 is arranged on the windward side of the main heat exchanger 10, and when the heat exchanger assembly 1 is used for refrigeration, the refrigerant flows to the first heat exchange pipe 110 and the second heat exchange pipe 130 of the main heat exchanger 10 from the third heat exchange pipe 201 of the back pipe heat exchanger 20, so that the heat exchange efficiency of the heat exchanger assembly 1 can be improved while the length of the heat exchange pipes is not increased and the occupied space for installing the heat exchanger assembly 1 is not increased, and further the heat exchange efficiency of the indoor air conditioner 1000 can be increased without increasing the overall size of the indoor air conditioner 1000.
Furthermore, the angle between the rear heat exchanger 13 and the vertical direction is α, and the angle is α degrees or less than or equal to 48 degrees, when the heat exchanger assembly 1 is applied to the indoor unit 1000 of the air conditioner, the rear heat exchanger 13 is enabled to be semi-wound around the wind wheel 3, the heat exchange energy efficiency of the heat exchanger assembly 1 can be further improved, and meanwhile, the condensation generated on the rear heat exchanger 13 can flow down along the rear heat exchanger 13.
Further, the distance between the main heat exchanger 10 and the wind wheel 3 is L, and L satisfies: l is larger than or equal to 10mm, so that the air flow can be driven by the wind wheel 3 after fully exchanging heat with the main heat exchanger 10, and the possibility of collision between the wind wheel 3 and the main heat exchanger 10 during operation can be reduced.
Further, the width dimension of the casing 2 in the front-rear direction is not more than 800mm, and the height dimension of the casing 2 in the up-down direction is not more than 300mm, so that the size of the air conditioning indoor unit 1000 can be more appropriate, and the overall size of the air conditioning indoor unit 1000 can be reduced.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 present 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.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (18)
1. A heat exchanger assembly, comprising:
the heat exchanger comprises a main heat exchanger and a heat exchanger body, wherein the main heat exchanger comprises a front heat exchanger and a rear heat exchanger, the front heat exchanger comprises a middle heat exchange part and a front heat exchange part, the upper end of the middle heat exchange part is spliced with the upper end of the rear heat exchanger, the upper end of the front heat exchange part is integrally connected with the lower end of the middle heat exchange part, the front heat exchanger comprises a first heat exchange tube, and the rear heat exchanger comprises a second heat exchange tube;
the back pipe heat exchanger is arranged on the windward side of the main heat exchanger and is provided with a third heat exchange pipe;
when the heat exchanger assembly is used for refrigerating, a refrigerant flows to the first heat exchange tube and the second heat exchange tube of the main heat exchanger from the third heat exchange tube of the back tube heat exchanger.
2. The heat exchanger assembly as claimed in claim 1, wherein the first heat exchange tube has a diameter smaller than that of the second heat exchange tube, the second heat exchange tube has a diameter smaller than that of the third heat exchange tube, the heat exchange flow paths of the heat exchanger assembly include a first flow path, a second flow path, a third flow path and a fourth flow path, the first flow path passes through the third heat exchange tube of the back tube heat exchanger, the second flow path passes through the second heat exchange tube of the rear heat exchanger, the fourth flow path passes through the first heat exchange tube of the front heat exchanger, and when the heat exchanger assembly is used for cooling, a refrigerant passes through the first flow path, the second flow path, the third flow path and the fourth flow path in sequence.
3. The heat exchanger assembly of claim 2, wherein the third heat exchange tube has a diameter of 7mm, the second heat exchange tube has a diameter of 6mm, and the first heat exchange tube has a diameter of 5 mm.
4. The heat exchanger assembly as claimed in claim 2, wherein the back tube heat exchanger includes a first back tube heat exchanger and a second back tube heat exchanger, the first back tube heat exchanger is located at a windward side of the rear heat exchanger, the second back tube heat exchanger is located at a windward side of the front heat exchanging part, the first flow path includes a first sub-flow path and a second sub-flow path, the first sub-flow path passes through the third heat exchanging tube of the first back tube heat exchanger, the second sub-flow path passes through the third heat exchanging tube of the second back tube heat exchanger, and a refrigerant sequentially passes through the first sub-flow path and the second sub-flow path when the heat exchanger assembly is used for cooling.
5. The heat exchanger assembly according to claim 4, wherein the second flow path includes a first main path and a first branch, a second branch and a third branch which are branched from the first main path, the first branch, the second branch and the third branch share all the second heat exchange tubes of the rear heat exchanger, and when the heat exchanger assembly is used for refrigeration, a refrigerant flows through the first main path and then is simultaneously branched into the first branch, the second branch and the third branch.
6. The heat exchanger assembly of claim 5, wherein the second heat exchange tubes of the rear heat exchanger comprise outer rows of heat exchange tubes through which the first major pass flows, the first, second, and third legs splitting the remainder of the second heat exchange tubes on the rear heat exchanger.
7. The heat exchanger assembly of claim 6, wherein the rear heat exchanger further comprises a middle row of heat exchange tubes and an inner row of heat exchange tubes, the outer row of heat exchange tubes, the middle row of heat exchange tubes and the inner row of heat exchange tubes are arranged in sequence along a direction of airflow, and the first leg, the second leg and the third leg all flow from the second one of the middle row of heat exchange tubes to the second one of the inner row of heat exchange tubes.
8. The heat exchanger assembly of claim 5, wherein the number of second heat exchange tubes in the first, second and third legs is the same.
9. The heat exchanger assembly of claim 5, wherein the first main circuit and the first, second and third legs are connected by a first distributor.
10. The heat exchanger assembly of claim 2, wherein the fourth flow path comprises: the heat exchanger comprises a fifth branch, a sixth branch, a seventh branch, an eighth branch, a ninth branch and a tenth branch, wherein the fifth branch, the sixth branch, the seventh branch, the eighth branch, the ninth branch and the tenth branch share all the first heat exchange tubes of the front heat exchanger, and the fifth branch, the sixth branch, the seventh branch, the eighth branch, the ninth branch and the tenth branch flow from the first heat exchange tubes on the windward side of the front heat exchanger to the first heat exchange tubes on the leeward side of the front heat exchanger.
11. The heat exchanger assembly according to claim 10, wherein the number of first heat exchange tubes in the fifth, sixth, seventh, eighth, ninth and tenth legs is the same.
12. The heat exchanger assembly of claim 10, wherein the third flow path and the fifth, sixth, seventh, eighth, ninth, and tenth legs are connected by a second distributor.
13. The heat exchanger assembly of claim 1, wherein the front heat exchanger has at least three rows of the first heat exchange tubes in a direction of airflow,
and/or the rear heat exchanger is provided with at least three rows of second heat exchange tubes in the airflow flowing direction.
14. The heat exchanger assembly according to claim 1, wherein the number of heat exchange tubes of the main heat exchanger is equal to or greater than 30.
15. An indoor unit of an air conditioner, comprising:
a housing;
the wind wheel is arranged in the shell;
the heat exchanger assembly according to any of claims 1-14, provided within the housing on an air inlet side of the wind wheel.
16. An indoor unit of an air conditioner according to claim 15, wherein an angle between the rear heat exchanger and a vertical direction is α, and the α satisfies α ≤ 48 °.
17. An indoor unit of an air conditioner according to claim 15, wherein a distance between the main heat exchanger and the wind wheel is L, and the L satisfies: l is more than or equal to 10 mm.
18. An indoor unit of an air conditioner according to claim 15, wherein a width of the casing in a front-rear direction is not more than 800mm, and a height of the casing in an up-down direction is not more than 300 mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922097151.4U CN210861409U (en) | 2019-11-28 | 2019-11-28 | Heat exchanger assembly and air conditioner indoor unit with same |
| PCT/CN2020/120890 WO2021103827A1 (en) | 2019-11-28 | 2020-10-14 | Heat exchanger assembly and air conditioner indoor unit having same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922097151.4U CN210861409U (en) | 2019-11-28 | 2019-11-28 | Heat exchanger assembly and air conditioner indoor unit with same |
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| CN210861409U true CN210861409U (en) | 2020-06-26 |
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| CN (1) | CN210861409U (en) |
| WO (1) | WO2021103827A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682861A (en) * | 2020-12-29 | 2021-04-20 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner |
| WO2021103827A1 (en) * | 2019-11-28 | 2021-06-03 | 广东美的制冷设备有限公司 | Heat exchanger assembly and air conditioner indoor unit having same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008121950A (en) * | 2006-11-10 | 2008-05-29 | Matsushita Electric Ind Co Ltd | Finned heat exchanger |
| CN204786816U (en) * | 2015-07-20 | 2015-11-18 | 广东美的制冷设备有限公司 | Air conditioner and heat exchanger thereof |
| JP6521087B2 (en) * | 2015-10-23 | 2019-05-29 | 三菱電機株式会社 | Indoor unit of air conditioner |
| US20190257532A1 (en) * | 2016-11-09 | 2019-08-22 | Mitsubishi Electric Corporation | Indoor unit for air-conditioning apparatus and air-conditioning apparatus |
| JPWO2019030793A1 (en) * | 2017-08-07 | 2020-05-28 | 三菱電機株式会社 | Heat exchanger, air conditioner indoor unit, and air conditioner |
| CN207438860U (en) * | 2017-11-22 | 2018-06-01 | 广东美的制冷设备有限公司 | Indoor heat exchanger, air conditioner indoor unit and air conditioner |
| CN109282482B (en) * | 2018-09-03 | 2020-10-09 | 广东美的制冷设备有限公司 | Machine in heat exchanger subassembly and air conditioning |
| CN208936504U (en) * | 2018-09-03 | 2019-06-04 | 广东美的制冷设备有限公司 | Heat exchanger assembly and air conditioner indoor unit |
| CN210861409U (en) * | 2019-11-28 | 2020-06-26 | 广东美的制冷设备有限公司 | Heat exchanger assembly and air conditioner indoor unit with same |
| CN211119692U (en) * | 2019-11-28 | 2020-07-28 | 广东美的制冷设备有限公司 | Heat exchanger assembly and air conditioner indoor unit with same |
-
2019
- 2019-11-28 CN CN201922097151.4U patent/CN210861409U/en active Active
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2020
- 2020-10-14 WO PCT/CN2020/120890 patent/WO2021103827A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021103827A1 (en) * | 2019-11-28 | 2021-06-03 | 广东美的制冷设备有限公司 | Heat exchanger assembly and air conditioner indoor unit having same |
| CN112682861A (en) * | 2020-12-29 | 2021-04-20 | 珠海格力电器股份有限公司 | Heat exchanger and air conditioner |
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| Publication number | Publication date |
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| WO2021103827A1 (en) | 2021-06-03 |
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