CN113669795A - Heat exchanger, air duct machine and air conditioner - Google Patents
Heat exchanger, air duct machine and air conditioner Download PDFInfo
- Publication number
- CN113669795A CN113669795A CN202111040300.9A CN202111040300A CN113669795A CN 113669795 A CN113669795 A CN 113669795A CN 202111040300 A CN202111040300 A CN 202111040300A CN 113669795 A CN113669795 A CN 113669795A
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- heat exchanger
- heat exchange
- air outlet
- cavity
- heat
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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
- F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a heat exchanger, an air duct machine and an air conditioner, which comprise a plurality of fins arranged in parallel at intervals and a heat exchange tube penetrating through the fins, wherein the middle part of the heat exchanger is in a straight plate shape parallel to the plane of an air outlet; according to the characteristic that the air volume of the heat exchanger in the air pipe machine is gradually reduced from the middle part to the two sides, the heat exchange capacity of the middle part of the heat exchanger is optimized, the thickness of fins and the number of heat exchange pipes in the middle part of the heat exchanger are increased, the heat exchange capacity of the extension parts on the two sides is relatively weakened, and the overall heat exchange efficiency of the heat exchanger is improved; and the heat exchange tubes of the heat exchanger adopt staggered tube arrangement, so that the heat exchange efficiency is further improved.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment manufacturing, in particular to a heat exchanger, an air duct machine and an air conditioner.
Background
The air duct type air conditioner indoor unit (air duct type for short) is selected by commercial and household scenes due to the characteristics of strong unique concealment and no damage to the home decoration style. The air duct machine generally comprises a shell, fan blades, a volute, a heat exchanger and the like, when the air duct machine runs, a motor drives the fan blades in the volute to rotate, air flow is generated to enter the shell, heat is replaced when the air duct machine passes through the heat exchanger, and then the air flow is blown out from an air outlet frame, so that temperature adjustment in an installation area is completed.
The tuber pipe machine is because the restriction of fan mounting panel and air-out frame when moving, and the air current can appear the heat transfer when flowing through the heat exchanger heat transfer and concentrate the scheduling problem, promptly: the heat exchange of the air outlet frame inner part heat exchanger is most concentrated, and the heat exchange efficiency of the air outlet frame outer parts at two sides is obviously low. The tuber pipe machine heat exchanger of current circulation on the market is mostly v type or straight plate type structure, and heat exchanger thickness is unanimous, so because the existence of the near concentrated condition of the amount of wind of air-out frame just can lead to the heat exchanger both sides to produce the problem such as heat exchange efficiency low, wasting of resources certainly. Therefore, it is necessary to develop a novel heat exchanger with inconsistent thickness, change the existing structure, design the shape of the whole heat exchanger into a trapezoid with different thickness, emphasize the heat exchange at the air outlet frame, reduce the heat exchange cost of other low air volume parts, and improve the whole heat exchange efficiency.
In addition, chinese patent No. CN112240610A discloses an air duct type air conditioning device, which includes a casing, heat exchange fins, a fan assembly, a first manifold plate and a second manifold plate; the shell forms an accommodating cavity, the heat exchange fins are arranged in the accommodating cavity and comprise first contour lines and second contour lines, the width of each heat exchange fin is gradually reduced from the middle area of each heat exchange fin to the end areas at the two ends of each heat exchange fin, and the heat exchange fins are integrally C-shaped. The utility model adopts the heat exchanger design of the special-shaped fins, but the C-shaped heat exchanger has great difficulty in assembly and poor fixing performance; the space occupied inside the housing cavity is large, and the multi-connected unit with high pipe distribution requirements is extremely crowded; from the perspective of the shell, the overall appearance of the heat exchanger can be seen when the C-shaped heat exchanger is seen from the direction of the air outlet frame, the heat exchanger is in a convex shape, and the attractiveness and tidiness of the unit are relatively influenced; in addition, the heat exchanger adopts a parallel pipe arrangement mode when arranging pipes, and the mode can cause the condition of short contact time of a refrigerant and air when the heat exchanger exchanges heat in a large area, thereby influencing the heat exchange efficiency.
Disclosure of Invention
In view of the above, the invention provides a heat exchanger and an air duct machine, which solve the problem of uneven heat exchange of the heat exchanger caused by concentrated air outlet and effectively improve the overall heat exchange efficiency of the heat exchanger.
The invention provides a heat exchanger which comprises a plurality of fins arranged in parallel at intervals and a heat exchange tube penetrating through the fins, wherein the middle part of the heat exchanger is in a straight plate shape parallel to the plane of an air outlet, two sides of the heat exchanger in the width direction extend outwards towards one side far away from the air outlet to form an extension part, and the thickness of the extension part is gradually reduced along the extension direction.
Preferably, the heat exchange tube is a U-shaped heat exchange tube penetrating through both ends of the indoor heat exchanger along the length direction of the heat exchanger.
Preferably, the number of the tube arrangement layers of the heat exchange tube in the thickness direction is greater than that of the extension part in the thickness direction.
Preferably, two adjacent layers of heat exchange tubes positioned in the middle of the heat exchanger are arranged in a staggered mode.
Preferably, when the heat exchanger is installed, the tube distribution density of the heat exchange tube at the bottom is greater than that of the heat exchange tube at the top.
Preferably, the thickness of the fin located at the middle portion of the heat exchanger is greater than the thickness of the fin located at the extension portion.
Preferably, the middle part of the heat exchanger is provided with 3 rows of heat exchange tubes along the thickness direction, and the extension part is provided with 2 rows of heat exchange tubes along the thickness direction.
An air duct machine adopts the heat exchanger described in any one of the above technical schemes.
Preferably, the device also comprises a shell and a fan;
a cavity is arranged in the shell, an air outlet frame is arranged on the cavity wall of one side of the cavity, and the opposite side of the cavity is communicated with an air outlet of the fan;
the indoor side heat exchanger is arranged in the containing cavity and separates a containing cavity space close to one side of the air outlet frame from a containing cavity space close to one side of the air outlet of the fan;
the air outlet surface of the main body is opposite to the air outlet frame and is parallel to the plane of the air outlet frame, and the first auxiliary heat exchanger and the second auxiliary heat exchanger are bent towards one side of the air outlet of the fan;
the first secondary heat exchanger is positioned at the upper part of the main body, and the top edge of the first secondary heat exchanger is hermetically connected with the top wall of the cavity;
the second secondary heat exchanger is positioned at the lower part of the main body, and the bottom edge of the second secondary heat exchanger is connected with the bottom wall of the containing cavity in a sealing way.
Preferably, a water receiving tray is arranged at the position, opposite to the heat exchanger, of the bottom wall of the cavity.
An air conditioner adopts the ducted air conditioner described in any one of the above technical means.
The invention has the beneficial effects that: according to the characteristic that the air volume of the heat exchanger in the air pipe machine is gradually reduced from the middle part to the two sides, the heat exchange capacity of the middle part of the heat exchanger is optimized, the thickness of fins and the number of heat exchange pipes in the middle part of the heat exchanger are increased, the heat exchange capacity of the extension parts on the two sides is relatively weakened, and the overall heat exchange efficiency of the heat exchanger is improved; and the heat exchange tubes of the heat exchanger adopt staggered tube arrangement, so that the heat exchange efficiency is further improved.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
fig. 1 is a structure of a duct type air conditioner having V-shaped heat exchange tubes in the related art.
FIG. 2 is a perspective view of the heat exchanger of the embodiment.
FIG. 3 is a cross-sectional view of an embodiment heat exchanger.
FIG. 4 is a cross-sectional view of an embodiment duct machine.
FIG. 5 is a fin parameter map.
Description of reference numerals:
the heat exchanger comprises 1-fins, 2-heat exchange tubes, 3-a shell, 4-a containing cavity, 5-a fan, 51-a volute, 52-a fan blade, 53-a fan air outlet, 6-a heat exchanger, 7-an air outlet frame and 8-a water pan.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the invention, and does not imply that every embodiment of the invention must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
The principles of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The heat exchanger shown in fig. 1-2 comprises a plurality of fins 1 arranged in parallel at intervals and a heat exchange tube 2 penetrating through the fins, the middle part of the heat exchanger is in a straight plate shape parallel to the plane of the air outlet, two sides of the heat exchanger in the width direction extend outwards towards one side far away from the air outlet to form an extension part, and the thickness of the extension part is gradually reduced along the extension direction.
The middle part of heat exchanger is mainly the wind-receiving face, and the heat transfer ability at middle part has been strengthened to this embodiment, has weakened the heat transfer ability of both sides extension relatively: the heat exchange tubes 2 are U-shaped heat exchange tubes penetrating through two ends of the indoor heat exchanger along the length direction of the heat exchanger, 3 rows of heat exchange tubes 2 are arranged in the middle of the heat exchanger along the thickness direction, and two rows of heat exchange tubes 2 are arranged in the extension part along the thickness direction; and the thickness of the central fin 1 is greater than the thickness of the extended portions on both sides.
In order to further improve the heat exchange capacity, the two adjacent layers of heat exchange tubes 2 in the middle of the heat exchanger are staggered and uniformly arranged, so that the contact time of the refrigerant and the fluid is ensured to the maximum extent, and the heat exchange loss is reduced to the minimum.
When the heat exchanger is used for refrigerating, water vapor in the air is condensed into water drops in the process, so that condensed water is bound to exist on the evaporator, the performance of the evaporator during working is influenced to a certain extent by the existence of the condensed water, and the condensed water flows to the bottom of the heat exchanger under the action of gravity; because the production of a large amount of comdenstion water, the running performance of the comparatively intensive bottom of comdenstion water will receive great influence, in order to improve the emergence of this kind of condition, the extension of heat exchanger bottom side has add two rows of U heat exchange tubes 2 than the extension of comparing the top, furthest has guaranteed the performance of heat exchanger.
The mutual interval parallel arrangement's multi-disc fin 1 is heterotypic integrative trapezoidal fin, and integrative characteristic makes unnecessary the assurance angle in the installation, need not the installation of later stage concatenation, need not to increase the process of pasting sealing clay for considering sealed, leak protection scheduling problem, also need not to cut off earlier just can constitute the angle like other heterotypic fins, has reduced production processes, has promoted the production progress on the production line, the production of being convenient for more.
The invention also provides an air duct machine which adopts any one of the heat exchangers.
In the embodiment shown in fig. 4, the ducted air conditioner includes a housing 3, and the housing 3 forms a cavity 4 together with a fan 5 after assembly. The heat exchanger 6 is arranged in the cavity 4, and an air outlet frame 7 is arranged on one side of the cavity 4, which is far away from the fan 5.
The plane of the air outlet frame 7 is vertical to the horizontal plane, and the straight plate type middle part of the heat exchanger 6 is opposite to the air outlet frame 7.
The upper side extension part of the heat exchanger is upwards tightly contacted with the sponge of the upper cover of the machine shell, and the lower side extension part of the heat exchanger is downwards tightly contacted with the sponge at the bottom of the machine shell.
The distance L1 between the middle part of the heat exchanger 6 and the air outlet 53 of the fan is controlled to be 165-170 mm, and the distance L2 between the middle part of the heat exchanger 6 and the air outlet frame 7 is controlled to be 15-20 mm; the distance L4 between the middle part of the heat exchanger 6 and the bottom edge of the shell 3 is controlled to be 55 mm-60 mm, and the distance L5 between the middle part of the heat exchanger 6 and the top edge of the shell 3 is controlled to be 40 mm-45 mm.
The fan 5 is composed of a volute 51 and a fan blade 52, wherein an included angle between two sides of a fan air outlet 53 is ≤ 1, an extension line of the fan air outlet and the heat exchanger 6 intersects at two points, a vertical distance between the two points is L3, and L3 is controlled to be 102-107 mm, as can be seen from fig. 5, most of the intersecting area of the fan air outlet 53 and the heat exchanger 6 is located in the middle of the heat exchanger 6 and almost completely distributed in the air outlet frame 7, that is, the main working part of the heat exchanger 6 is a middle straight plate part distributed in the air outlet frame 7. In the working process of the whole machine, air enters the cavity 4 through the fan air outlet 53 under the driving of the fan blades 52 and is blown out through the air outlet frame 7 after passing through the heat exchanger 6, most of fluid is in the heat exchange of the middle straight plate part of the heat exchanger 6 in the process, and on the basis, the problems of uneven heat exchange, uneven heat loss and the like can be directly reduced fundamentally due to the uneven number of rows of the heat exchange tubes 2 of the middle part and the extension parts at the two sides of the heat exchanger 6.
Fig. 5 shows a detailed parameter diagram of the fin 1. The side of the heat exchanger 6 facing the air outlet frame 7 is a front side.
In the embodiment, the front height L1 of the straight plate type middle part of the heat exchanger 6 is controlled to be 89 mm-93 mm, and the thickness L2 is controlled to be 33 mm-36 mm; the total height L3 of the heat exchanger 6 is controlled to be 178-182 mm, and the ratio of L1 to L3 is set to be 0.48-0.52.
In the embodiment, the height L4 of the upper side extension part of the heat exchanger 6 is controlled to be 47-49 mm, the height of the lower side extension part is controlled to be 36-38 mm, and L4 is more than L5; the heat exchanger 6 is designed in a non-uniform row number mode, namely the straight plate type middle part of the heat exchanger is designed into 3 rows of heat exchange tubes, and the extending parts at the upper side and the lower side are two rows of heat exchange tubes; the middle part of the straight plate is provided with 16 hole sites which are distributed in three rows in a staggered and uniform manner, the lower side extension part is provided with 6 hole sites, and the upper side extension part is provided with 4 hole sites. The distance between the hole sites in the first row of the middle part and the edge of the fin is L6, the distance between the hole sites in the first row and the second row is L7, the distance between the second row and the third row is L8, the distance between the hole sites and each row of the hole sites is L9, L6 is controlled to be 5.5 mm-6 mm, L7 is controlled to be 11 mm-11.5 mm, wherein L7= L8, and L9 is controlled to be 9.4 mm-9.6 mm.
The included angle between the front surface of the straight-plate type middle part of the heat exchanger 6 and the upper side extension part is less than 3, the included angle between the back surface of the straight-plate type middle part of the heat exchanger 6 and the upper side extension part is less than 1, the included angle between the back surface of the straight-plate type middle part of the heat exchanger 6 and the lower side extension part is less than 2, wherein the angle 3 is controlled to be 145-150 degrees, the angle 4 is controlled to be 138-142 degrees, the angle 1 is controlled to be 152-155 degrees, and the angle 2 is controlled to be 140-144 degrees;
an included angle formed between the front surfaces of the upper extending part and the lower extending part is less than 8, an included angle formed between the back surfaces of the upper extending part and the lower extending part is less than 7, wherein the less than 8 is controlled to be 106-109 degrees, and the less than 7 is controlled to be 114-117 degrees;
the included angle between the front surface and the back surface of the upper side extension part is less than 5, the included angle between the front surface and the back surface of the lower side extension part is less than 6, wherein the less than 5 is controlled between 5 degrees and 6 degrees, and the less than 6 is controlled between 2 degrees and 3 degrees.
In this embodiment, a water pan 8 is disposed at a position where the bottom wall of the cavity 4 faces the heat exchanger 6;
because what the heat exchanger 6 was taken when the installation is the large tracts of land vertical, according to the principle of gravity, such design can do benefit to the comdenstion water more and flow into water collector 8, and then the discharge unit, and the angle of inclination of downside extension can form the device of drainage, and the principle is similar to the drainage stick, can make things convenient for the comdenstion water to flow into water collector 8 more rapidly and thoroughly.
Compared with the air duct machine structure shown in the figure 1, the heat exchanger of the invention occupies a smaller space, can leave more room for pipe arrangement, wire routing and the like, and can even further simplify the width of the unit under the condition of ensuring the optimal performance of the unit, thereby increasing the diversified competitiveness of products in the market.
The invention also provides an air conditioner which adopts the air duct machine.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (11)
1. The heat exchanger is characterized in that the middle of the heat exchanger is in a straight plate shape parallel to the plane of an air outlet, two sides of the width direction of the heat exchanger extend outwards towards one side far away from the air outlet to form an extension part, and the thickness of the extension part is gradually reduced along the extension direction.
2. The heat exchanger as claimed in claim 1, wherein the heat exchange pipe is a U-shaped heat exchange pipe penetrating both ends of the indoor heat exchanger in a length direction of the heat exchanger.
3. The heat exchanger of claim 1, wherein the number of tube laying layers of the heat exchange tubes in the thickness direction is greater than the number of tube laying layers of the extension portion in the thickness direction.
4. A heat exchanger according to claim 3, wherein adjacent two layers of said heat exchange tubes located in the middle of said heat exchanger are arranged offset from each other.
5. A heat exchanger as claimed in claim 1, wherein the heat exchanger is installed with the tube distribution density of the heat exchange tubes at the bottom being greater than the tube distribution density of the heat exchange tubes at the top.
6. The heat exchanger of claim 1, wherein the fins located in the middle of the heat exchanger have a thickness greater than the fins located in the extension.
7. The heat exchanger as recited in claim 1, wherein the heat exchanger has 3 rows of heat exchange tubes arranged in the thickness direction in the middle portion thereof, and the extension portion has 2 rows of heat exchange tubes arranged in the thickness direction thereof.
8. A ducted air conditioner, characterized in that a heat exchanger according to any one of claims 1 to 7 is used.
9. The ducted air conditioner of claim 8, further comprising a housing and a fan;
a cavity is arranged in the shell, an air outlet frame is arranged on the cavity wall of one side of the cavity, and the opposite side of the cavity is communicated with an air outlet of the fan;
the heat exchanger is arranged in the cavity and separates a cavity space close to one side of the air outlet frame from a cavity space close to one side of the air outlet of the fan;
the air outlet surface of the main body is opposite to the air outlet frame and is parallel to the plane of the air outlet frame, and the first auxiliary heat exchanger and the second auxiliary heat exchanger are bent towards one side of the air outlet of the fan;
the first secondary heat exchanger is positioned at the upper part of the main body, and the top edge of the first secondary heat exchanger is hermetically connected with the top wall of the cavity;
the second auxiliary heat exchanger is positioned at the lower part of the main body, and the bottom edge of the second auxiliary heat exchanger is connected with the bottom wall of the containing cavity in a sealing way.
10. The ducted air conditioner of claim 9 wherein a water pan is provided in a position opposite said heat exchanger from said bottom wall of said cavity.
11. An air conditioner characterized by using the duct unit according to any one of claims 8 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111040300.9A CN113669795A (en) | 2021-09-06 | 2021-09-06 | Heat exchanger, air duct machine and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111040300.9A CN113669795A (en) | 2021-09-06 | 2021-09-06 | Heat exchanger, air duct machine and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113669795A true CN113669795A (en) | 2021-11-19 |
Family
ID=78548523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111040300.9A Pending CN113669795A (en) | 2021-09-06 | 2021-09-06 | Heat exchanger, air duct machine and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113669795A (en) |
-
2021
- 2021-09-06 CN CN202111040300.9A patent/CN113669795A/en active Pending
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