Duct type air conditioner with novel evaporator

Abstract

The utility model discloses a duct type air conditioner with a novel evaporator, which belongs to the technical field of heat exchange and comprises a fan, the evaporator is arranged on the downstream of the fan, copper fins and aluminum fins are vertically arranged on an inner threaded pipe of the evaporator and are staggered, an air passage is arranged between the copper fins and the aluminum fins, and the air passage is communicated with the evaporator. The direction of the air passing channel is parallel to the direction of the air flow, a refrigerant is arranged in the inner threaded pipe, the air flow makes contact with the inner threaded pipe, the copper fins and the aluminum fins when passing through the air passing channel, and therefore the refrigerant conducts heat exchange through the inner threaded pipe, the copper fins and the aluminum fins. The evaporator adopts a copper-aluminum fin composite design, so that the heat exchange efficiency of the evaporator is ensured, the internal structure of the air duct machine is not easy to damage, and the service life of the air duct machine is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchange technology, and in particular relates to a duct air conditioner with a novel evaporator. Background Technology

[0002] Existing conventional centrifugal fans typically use copper tubes with all-copper or all-aluminum fins for the evaporator. The air inside the duct fan undergoes heat exchange in the evaporator before being blown out from the outlet. However, existing evaporators have the following problems:

[0003] When space is limited inside a ducted air conditioner, if the evaporator uses an internally threaded tube with all-copper fins, the overall cost of the ducted air conditioner will be too high. At the same time, if resonance occurs, the internal structure of the ducted air conditioner will be greatly damaged. If the evaporator uses an internally threaded tube with all-aluminum fins, although the weight of the evaporator is reduced, its heat exchange efficiency cannot meet the requirements of high standards and special conditions.

[0004] Therefore, there is an urgent need to design a duct air conditioner with a new type of evaporator to solve the problems mentioned above. Utility Model Content

[0005] To address the technical issues mentioned in the background art, where the evaporator with internally threaded tubes and all-copper fins causes significant damage to the internal structure of the ducted air conditioner during resonance, and where the heat exchange efficiency of the evaporator with internally threaded tubes and all-aluminum fins fails to meet usage requirements, a ducted air conditioner with a novel evaporator is provided to solve these problems.

[0006] To achieve the above objectives, the specific technical solution of the duct air conditioner with a novel evaporator of this utility model is as follows:

[0007] A ducted air conditioner with a novel evaporator includes a fan and an evaporator located downstream of the fan. Copper and aluminum fins are vertically arranged on the internally threaded tube of the evaporator, and the copper and aluminum fins are staggered. An air passage is provided between the copper and aluminum fins, and the direction of the air passage is parallel to the direction of the airflow. Refrigerant is contained inside the internally threaded tube. When the airflow passes through the air passage, it comes into contact with the internally threaded tube, copper fins, and aluminum fins, thereby allowing the refrigerant to exchange heat through the internally threaded tube, copper fins, and aluminum fins.

[0008] Furthermore, the copper fins and aluminum fins have the same shape, both being C-shaped, thus forming a C-shaped evaporator. The opening direction of the C-shaped evaporator is opposite to the direction of the airflow.

[0009] Furthermore, the copper and aluminum fins gradually narrow from the center to both sides in the direction perpendicular to the airflow, thus forming a high-speed channel in the middle and low-speed channels on both sides of the air passage.

[0010] Furthermore, the copper and aluminum fins located in the high-speed channel are corrugated fins.

[0011] Furthermore, the copper and aluminum fins in the low-speed channel are flat fins.

[0012] Furthermore, a cleaning nozzle is installed upstream of the evaporator, and a water tray is installed below the evaporator. The cleaning nozzle works in conjunction with the fan to clean the evaporator, and the water tray collects the wastewater after cleaning.

[0013] Furthermore, an outlet baffle is installed downstream of the evaporator to prevent wastewater or foam sprayed from the cleaning nozzles from entering the downstream air duct of the outlet baffle.

[0014] Furthermore, the copper and aluminum fins gradually narrow from the center to both sides in the direction of the vertical airflow, thus forming a high-speed channel in the middle and low-speed channels on both sides of the air passage. The copper and aluminum fins in the low-speed channels are flat fins with guide grooves to guide the clean wastewater to the water pan.

[0015] Furthermore, the guide channel is a V-shaped groove.

[0016] Furthermore, the guide channel is inclined downwards along the direction of airflow.

[0017] The duct air conditioner with a novel evaporator of this invention has the following advantages:

[0018] The evaporator of this invention adopts a copper-aluminum fin composite design, which ensures the heat exchange efficiency of the evaporator while also ensuring that the internal structure of the duct unit is not easily damaged, thereby guaranteeing the service life of the duct unit.

[0019] This invention features a self-cleaning function, enabling rapid cleaning of the evaporator without disassembly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the duct air conditioner with a novel evaporator according to this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the evaporator of this utility model.

[0022] Figure 3 This is a cross-sectional schematic diagram of the evaporator of this utility model.

[0023] Figure 4 This is a schematic diagram of the flow guide groove on the copper fin of this utility model.

[0024] The markings in the diagram are as follows: 1. Fan; 2. Evaporator; 201. Internally threaded tube; 202. Copper fins; 203. Aluminum fins; 204. Guide channel; 3. Air passage; 301. High-speed passage; 302. Low-speed passage; 4. Cleaning nozzle; 5. Water tray; 6. Air outlet baffle. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0027] The following is a reference to the appendix. Figure 1 To be continued Figure 4 This invention describes a ducted air conditioner with a novel evaporator.

[0028] When the internal space of a ducted air conditioner is limited, in existing technologies, if the evaporator 2 is made of internally threaded tube 201 with all-copper fins 202, the evaporator 2 will be too heavy when the whole ducted air conditioner resonates, which will cause great damage to the internal structure of the ducted air conditioner and make the ducted air conditioner more prone to damage. If the evaporator 2 is made of internally threaded tube 201 with all-aluminum fins 203, the internal space of the ducted air conditioner is limited. Although the mass of the evaporator 2 is reduced and the ducted air conditioner is less prone to damage, its heat exchange efficiency cannot meet the usage requirements.

[0029] Therefore, this utility model provides a duct air conditioner with a novel evaporator, such as... Figure 1 and Figure 2As shown, the device includes a fan 1, and an evaporator 2 is located downstream of the fan 1. Copper fins 202 and aluminum fins 203 are vertically arranged on the internally threaded tube 201 of the evaporator 2. The copper fins 202 and aluminum fins 203 are arranged alternately, and an air passage 3 is provided between the copper fins 202 and aluminum fins 203. The direction of the air passage 3 is parallel to the direction of the airflow. Refrigerant is provided inside the internally threaded tube 201. When the airflow passes through the air passage 3, it comes into contact with the internally threaded tube 201, copper fins 202 and aluminum fins 203, so that the refrigerant exchanges heat through the internally threaded tube 201, copper fins 202 and aluminum fins 203. Specifically, evaporator 2 adopts a copper-aluminum fin composite design. Since copper has a higher thermal conductivity, it can improve the heat exchange efficiency under the same air volume. The copper-aluminum fin composite staggered arrangement can reduce the total weight compared to using all copper fins 202, while ensuring the heat exchange efficiency compared to using all aluminum fins 203. That is, the copper-aluminum fin composite staggered arrangement not only ensures the heat exchange efficiency of evaporator 2, but also makes the internal structure of the duct unit less susceptible to damage, thus ensuring the service life of the duct unit.

[0030] As a preferred option, such as Figure 2 As shown, the copper fins 202 and aluminum fins 203 have the same shape, both being C-shaped, thus forming a C-shaped evaporator 2. The opening direction of the C-shaped evaporator 2 is opposite to the direction of the airflow. Specifically, the purpose of setting the C-shaped evaporator 2 with the opening direction of the C-shaped evaporator 2 opposite to the direction of the airflow is to allow the airflow to flow smoothly through the air passage 3 between the copper fins 202 and the aluminum fins 203.

[0031] As a preferred option, such as Figure 2 and Figure 3 As shown, the copper fins 202 and aluminum fins 203 gradually narrow from the center to both sides in the direction perpendicular to the airflow, thus forming a high-speed channel 301 in the middle and low-speed channels 302 on both sides of the air passage 3. Specifically, since the air blown out by the fan 1 flows inside the duct unit, a boundary effect occurs when the air passes through the top and bottom plates of the duct unit. That is, the air velocity near the top and bottom plates of the duct unit is significantly lower than the air velocity in the middle. Therefore, by setting the fins to a structure that gradually narrows from the center to both sides in the direction perpendicular to the airflow, the air temperature remains consistent after passing through the high-speed channel 301 and the low-speed channel 302, achieving a uniform heat exchange effect. At the same time, the structural design of the copper fins 202 and aluminum fins 203 gradually narrowing from the center to both sides in the direction perpendicular to the airflow also allows for more flexible arrangement space and less weight for the evaporator 2 in a limited space, reducing the resonance damage of the evaporator 2.

[0032] As a preferred option, such as Figure 2 and Figure 3As shown, the copper fins 202 and aluminum fins 203 located in the high-speed channel 301 are corrugated fins, so that the airflow heat exchange area in the high-speed channel 301 region is larger and the heat exchange efficiency is higher.

[0033] Preferably, the copper fins 202 and aluminum fins 203 of the low-speed channel 302 are flat fins to reduce airflow resistance and increase heat exchange efficiency in the low-speed channel 302 region. At the same time, in conjunction with the corrugated fins of the copper fins 202 and aluminum fins 203 located in the high-speed channel 301, the temperature of the airflow coming out of the high-speed channel 301 and the low-speed channel 302 is kept consistent.

[0034] As a preferred option, such as Figure 1 As shown, a cleaning nozzle 4 is provided upstream of the evaporator 2, and a water tray 5 is provided below the evaporator 2. The cleaning nozzle 4 works in conjunction with the fan 1 to clean the evaporator 2, and the water tray 5 collects the wastewater after cleaning. Specifically, when the evaporator 2 is not running for a long time, a large amount of dust will accumulate inside. Unlike the filter, the evaporator 2 cannot be replaced or repaired under simple conditions. Therefore, the evaporator 2 can be self-cleaned by the above structure. Specifically, the fan 1 is turned off, and the cleaning nozzle 4 is controlled to spray water-based foam. After the cleaning foam on the evaporator 2 dissolves the dust, the fan 1 reduces its speed and blows air. The foam and the wastewater after the foam dissolves are blown off by the low-speed wind and collected by the water tray 5.

[0035] Preferably, an air outlet baffle 6 is provided downstream of the evaporator 2 to prevent wastewater or foam sprayed from the cleaning nozzle 4 from entering the downstream air duct of the air outlet baffle 6. Specifically, the air outlet baffle 6 is closed when the evaporator 2 is self-cleaning, and is opened again after cleaning is completed, thereby preventing wastewater or foam sprayed from the cleaning nozzle 4 from entering the downstream air duct of the air outlet baffle 6.

[0036] As a preferred option, such as Figure 4 As shown, taking copper fin 202 as an example, a guide groove 204 is provided on the flat fin of copper fin 202 so that the clean wastewater can be guided to the water pan 5.

[0037] Preferably, the flow guide trough 204 is a V-shaped trough. It can also be understood that the shape of the flow guide trough 204 can be semi-circular, rectangular, trapezoidal or other shapes that facilitate drainage and flow.

[0038] Preferably, the guide channel 204 is inclined downward along the direction of airflow. The purpose is that after the cleaning foam on the evaporator 2 dissolves the dust, the fan 1 reduces its speed and blows air. The foam and the wastewater formed by the dissolution of the foam flow rapidly into the water pan 5 along the guide channel 204 under the blowing of the fan 1 and the action of gravity, thereby realizing the rapid dehydration of the evaporator 2.

[0039] The evaporator 2 of this utility model adopts a copper-aluminum fin composite design, which ensures the heat exchange efficiency of the evaporator 2 while also ensuring that the internal structure of the duct air conditioner is not easily damaged by the resonance of the evaporator 2, thus ensuring the service life of the duct air conditioner.

[0040] This invention features a self-cleaning function, enabling rapid cleaning of the evaporator 2 without disassembly.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A ducted fan machine with a novel evaporator, characterised in that, The application relates to a heat exchanger, which comprises a fan, an evaporator arranged downstream of the fan, copper fins and aluminum fins vertically arranged on an inner threaded tube of the evaporator, the copper fins and the aluminum fins being arranged alternately, a wind passage being arranged between the copper fins and the aluminum fins, the direction of the wind passage being parallel to the direction of air flow, and refrigerant being arranged in the inner threaded tube, the air flow being in contact with the inner threaded tube, the copper fins and the aluminum fins when passing through the wind passage, so that the refrigerant exchanges heat through the inner threaded tube, the copper fins and the aluminum fins.

2. The ducted type air conditioning unit with a novel evaporator as claimed in claim 1, wherein The copper fins and the aluminum fins are of the same shape, i.e. C-shaped, so as to form a C-shaped evaporator, and the opening direction of the C-shaped evaporator is opposite to the direction of air flow.

3. The ducted air blower with a new type evaporator according to claim 2, characterized in that, The copper fins and the aluminum fins are tapered along the center to both sides in the direction perpendicular to the air flow, so that the wind passage forms a high-speed passage in the middle and low-speed passages on both sides.

4. The ducted air blower with a new type evaporator according to claim 3, characterized in that, The copper fins and the aluminum fins in the high-speed passage are wave-shaped fins.

5. The ducted air blower with a novel evaporator as claimed in claim 4, wherein, The copper fins and the aluminum fins in the low-speed passages are flat fins.

6. The ducted air blower with a new type evaporator according to claim 2, characterized by, A cleaning nozzle is arranged upstream of the evaporator, and a water tray is arranged below the evaporator, the cleaning nozzle being used in cooperation with the fan to clean the evaporator, and the water tray being used to collect the waste water after cleaning.

7. The ducted air blower with a novel evaporator as claimed in claim 6, wherein, An air outlet baffle is arranged downstream of the evaporator, so as to avoid waste water or foam sprayed by the cleaning nozzle from entering the air duct downstream of the air outlet baffle.

8. The ducted air blower with a new type evaporator according to claim 7, characterized by, The copper fins and the aluminum fins are tapered along the center to both sides in the direction perpendicular to the air flow, so that the wind passage forms a high-speed passage in the middle and low-speed passages on both sides, the copper fins and the aluminum fins in the low-speed passages are flat fins, and flow guide grooves are arranged on the flat fins to guide the cleaning waste water to the water tray.

9. The ducted air blower with a novel evaporator as claimed in claim 8, wherein, The flow guide grooves are V-shaped grooves.

10. The ducted air blower with a novel evaporator as claimed in claim 8 or 9, wherein The flow guide grooves are inclined downward along the direction of air flow.

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