Air conditioner

Abstract

The application relates to the air conditioning technical field and discloses an air conditioner, which comprises a shell, a first air duct arranged in the shell and a heat exchanger arranged in the first air duct, and further comprises a second pipeline and a fan, the second pipeline is arranged in the first air duct and defines a second air duct; the fan comprises coaxially arranged outer ring fan blades and inner ring fan blades, wherein the outer ring fan blades are arranged at a first air outlet of the first air duct, and the inner ring fan blades are arranged at a second air outlet of the second air duct. When the double-fan-blade fan rotates, the heat-exchanged airflow in the first air duct reaches the air outlet after being pressurized by the outer ring fan blades, thereby forming a heat-exchanged airflow; the indoor airflow in the second air duct reaches the air outlet after being pressurized by the inner ring fan blades, thereby forming an indoor airflow. In this way, the mixing of the heat-exchanged airflow and the indoor airflow is realized in the air conditioner, the air outlet wind speed can be uniformly realized without acceleration, the uniform temperature effect can be achieved, high-speed airflow impact can be avoided, and the user experience is better.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, for example, to an air conditioner. Background Technology

[0002] Currently, the air blown out by air conditioners is primarily heat-exchange air, especially when cooling. The cool air blowing directly onto the user can cause discomfort and even lead to "air conditioning sickness." Existing air conditioners that can achieve uniform temperature mainly use a jet-flow method to accelerate the airflow, thereby causing the blown heat-exchange air to move along with the indoor airflow.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0004] Existing air conditioners that can achieve uniform temperature use jet propulsion to accelerate airflow, resulting in a strong airflow impact and a poor user experience. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides an air conditioner to address the problem that existing air conditioners, which can achieve uniform temperature, tend to cause a strong airflow impact and result in a poor user experience.

[0007] In some embodiments, the air conditioner includes a housing, a first air duct disposed within the housing, and a heat exchanger located within the first air duct, and further includes:

[0008] The second duct is installed inside the first air duct, defining the second air duct;

[0009] The fan includes an outer ring fan blade and an inner ring fan blade arranged coaxially, wherein the outer ring fan blade is located at the first air outlet of the first air duct, and the inner ring fan blade is located at the second air outlet of the second air duct.

[0010] The air conditioner provided in this embodiment can achieve the following technical effects:

[0011] When the dual-blade fan rotates, the heat-exchange airflow in the first duct is pressurized by the outer fan blades and reaches the air outlet, forming a heat-exchange airflow. Meanwhile, the indoor airflow in the second duct is pressurized by the inner fan blades and reaches the air outlet, forming an indoor airflow. In this way, the heat-exchange airflow and the indoor airflow mix thoroughly at the air outlet, resulting in temperature neutralization. This mixing of heat-exchange and indoor airflow is achieved within the air conditioner, eliminating the need for increased airflow velocity at the outlet to maintain a uniform temperature. This achieves both temperature uniformity and avoids the impact of high-speed airflow, resulting in a better user experience.

[0012] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0013] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0014] Figure 1 This is a side view of an air conditioner provided in an embodiment of this disclosure;

[0015] Figure 2 This is a front view of an air conditioner provided in an embodiment of this disclosure;

[0016] Figure 3 This is a cross-sectional structural schematic diagram of an air conditioner provided in an embodiment of this disclosure;

[0017] Figure 4 This is a partial structural schematic diagram of an air conditioner provided in an embodiment of this disclosure;

[0018] Figure 5 This is a partial explosion diagram of an air conditioner provided in an embodiment of this disclosure;

[0019] Figure 6 This is a partial structural schematic diagram of an air conditioner provided in an embodiment of this disclosure;

[0020] Figure 7 This is a partial structural schematic diagram of an air conditioner provided in an embodiment of this disclosure;

[0021] Figure 8 This is a schematic diagram of the structure of a fan provided in an embodiment of this disclosure.

[0022] Figure label:

[0023] 10: Shell; 20: First air duct; 21: First air inlet; 22: First air outlet; 30: Second air duct; 31: Second air inlet; 32: Second air outlet; 33: Second pipe; 331: Air inlet pipe; 3311: First gas flow section; 332: Air outlet pipe; 3321: Second gas flow section; 40: Fan; 41: Outer fan blade; 42: Inner fan blade; 50: Heat exchanger; 60: Enclosure plate; 61: Tail slot. Detailed Implementation

[0024] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0025] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0026] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0027] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0028] Unless otherwise stated, the term "multiple" means two or more. The character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B. The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0030] The air conditioner provided in this disclosure is a device that can adjust parameters such as temperature, humidity, cleanliness, and airflow rate of air in a specific space to meet human comfort or process requirements. For example, the air conditioner can be an air conditioner (including but not limited to cabinet air conditioners, window air conditioners, and other air conditioning equipment).

[0031] Combination Figure 1-3 As shown, this embodiment of the present disclosure provides an air conditioner, including a housing 10, a first air duct 20 disposed within the housing 10, and a heat exchanger 50 located within the first air duct 20. It also includes a second pipe 33 and a fan 40. The second pipe 33 is disposed within the first air duct 20, defining the second air duct 30. The fan 40 includes an outer fan blade 41 and an inner fan blade 42 coaxially disposed, wherein the outer fan blade 41 is disposed at the first air outlet 22 of the first air duct 20, and the inner fan blade 42 is disposed at the second air outlet 32 ​​of the second air duct 30.

[0032] The airflow at the first air outlet 22 is driven by the outer fan blades 41 to form a ring-shaped airflow, with very little airflow in the middle. Based on this, a second air duct 30 is placed within the first air duct 20, allowing the airflow from the second air outlet 32 ​​to exit from the center of the first air outlet 22 and mix with the airflow exiting from the first air outlet 22. This ensures thorough mixing of the heated / cooled airflow (heat exchange airflow) from the first air duct 20 with the airflow (indoor airflow) from the second air duct 30, while also making full use of space, resulting in a more compact air conditioning structure.

[0033] Using the air conditioner provided in this embodiment, when the dual-blade fan 40 rotates, the heat-exchange airflow in the first air duct 20, after heat exchange, is pressurized by the outer fan blade 41 and reaches the air outlet, forming a heat-exchange airflow; the indoor airflow in the second air duct 30, after being pressurized by the inner fan blade 42, reaches the air outlet, forming an indoor airflow. In this way, the heat-exchange airflow and the indoor airflow are fully mixed at the air outlet, resulting in temperature neutralization. The mixing of the heat-exchange airflow and the indoor airflow is achieved inside the air conditioner, and the airflow velocity at the air outlet does not need to be increased to achieve uniform temperature. This achieves both uniform temperature and avoids the impact of high-speed airflow, resulting in a better user experience.

[0034] In some embodiments, such as Figure 5 , Figure 6 As shown, the second duct 33 includes an air inlet duct 331 and an air outlet duct 332. The air inlet duct 331 includes a second air inlet 31 and a first gas flow section 3311; the air outlet duct 332 includes a second gas flow section 3321 connected to the first gas flow section 3311 and a second air outlet 32. Indoor airflow flows from the second air inlet 31 of the air inlet duct 331 into the first gas flow section 3311, then through the first gas flow section 3311 into the second gas flow section 3321, and finally flows out from the second air outlet 32, mixing with the heat exchange airflow flowing out from the first air outlet 22. By separating the air inlet duct 331 and the air outlet duct 332 of the second duct 33, the air inlet direction of the second duct 33 can be changed. Furthermore, the position of the air inlet duct 331 can be adjusted according to the actual structure of the air conditioner's housing 10, making the placement of the air inlet duct 331 more flexible.

[0035] Optionally, such as Figure 6 As shown, the air intake direction of the second air inlet 31 is different from the air outlet direction of the second air outlet 32. For example, the second air inlet 31 can be located on the side wall of the air conditioner, and the second air outlet 32 ​​can be located on the front baffle of the air conditioner; or, the second air inlet 31 can be located on the top plate of the air conditioner, and the second air outlet 32 ​​can be located on the front baffle of the air conditioner. In this way, the position of the second air inlet 31 can be adjusted more flexibly according to the actual structure of the air conditioner to achieve air intake within the air conditioner.

[0036] Optionally, the air intake direction of the second air inlet 31 is perpendicular to the air outlet direction of the second air outlet 32. In this way, the airflow entering from the second air inlet 31 is converged and pressurized at the vertical bend of the air inlet duct 331 and the air outlet duct 332, and then blown out from the second air outlet 32. This increases the speed of the indoor airflow blown out from the second air outlet 32, which is beneficial to the mixing of the indoor airflow with the heat exchange airflow blown out from the first air outlet 22, thereby improving the temperature uniformity of the air conditioner.

[0037] Optionally, when there are multiple second air inlets 31, the air intake directions of the multiple second air inlets 31 are different. For example, when there are two second air inlets 31, the two second air inlets 31 are respectively located on the side wall of the air conditioner; when there are three second air inlets 31, two of the second air inlets 31 are respectively located on the side wall of the air conditioner, and one of the second air inlets 31 is located on the top plate of the air conditioner. In this way, the number of second air inlets 31 is increased, and the air intake directions of the multiple second air inlets 31 are different to increase the air intake pressure of the second air inlets 31, which can increase the air volume and air velocity of the second air outlet 32, and better improve the temperature uniformity of the air conditioner.

[0038] Optionally, such as Figure 3 As shown, the air intake direction of the second air inlet 31 is different from that of the first air inlet 21 of the first air duct 20. For example, the first air inlet 21 is located on the back panel of the air conditioner, and the second air inlet 31 is located on the side wall of the air conditioner. In this way, the first air inlet 21 draws air from the back panel of the air conditioner, and the second air inlet 31 draws air from the side wall of the air conditioner. Separating the two air inlets avoids them drawing air from the same point, which increases the air volume of both air inlets and thus improves the heat exchange effect of the air conditioner.

[0039] In some embodiments, such as Figure 4 As shown, the diameter of the first air duct 20 decreases from the air inlet to the air outlet. Since the second air duct 30 is located in the middle of the first air duct 20, in order to better mix the heat exchange airflow flowing through the first air duct 20 with the indoor airflow flowing through the second air duct 30, the first air duct 20 is set in a trumpet shape, with the diameter gradually decreasing from the air inlet to the air outlet. This helps the airflow at the first air outlet 22 to converge towards the center and mix with the airflow at the second air outlet 32. At the same time, it also gradually increases the airflow velocity at the first air outlet 22, increases the airflow volume, and improves the heat exchange efficiency.

[0040] Optionally, such as Figures 5-7 As shown, the diameter of the air outlet duct 332 increases from the air inlet end to the air outlet end. Since the second air duct 30 is located in the middle of the first air duct 20, in order to better mix the heat exchange airflow flowing through the second air duct 30 with the indoor airflow flowing through the first air duct 20, the air outlet duct 332 (second air duct 30) is set in a trumpet shape, with the diameter gradually increasing from the air inlet end to the air outlet end. This facilitates the diffusion of the airflow from the second air outlet 32 ​​to the edge, thereby mixing it fully with the airflow from the first air outlet 22 and improving the temperature uniformity of the air conditioner.

[0041] In some embodiments, such as Figure 3 As shown, the second pipe 33 is located between the heat exchanger 50 and the first air outlet 22. Placing the second pipe 33 between the heat exchanger 50 and the first air outlet 22 shortens the transmission distance of the indoor airflow and avoids the heat exchanger 50 exchanging heat with the airflow in the second air duct 30, which can effectively improve the temperature uniformity of the air conditioner.

[0042] Optionally, the second duct 33 and the heat exchanger 50 are arranged in a non-contact manner. The distance between the second duct 33 and the heat exchanger 50 ranges from 5 to 10 cm, for example, 5 cm, 8 cm, or 10 cm. This reduces the heat exchange effect of the heat exchanger 50 on the indoor airflow within the second duct 33 (second air duct 30), improves the temperature uniformity of the indoor airflow at the air conditioner outlet on the heat exchange airflow in the first air duct 20, and makes the airflow blowing on the user more gentle, thereby improving the user experience.

[0043] Optionally, the second duct 33 is located in the middle of the first air duct 20. Driven by the outer fan blades 41, the airflow in the first air duct 20 converges towards the edge, resulting in poor ventilation and low airflow in the middle. Therefore, placing the second duct 33 in the middle of the first air duct 20 can save space in the air conditioner and make its structure more compact, while reducing the heat exchange between the airflow that has passed through the heat exchanger 50 and the indoor airflow in the second duct 33.

[0044] Optionally, the heat exchanger 50 is arranged along the cross-section of the first air duct 20. This increases the heat exchange area between the heat exchanger 50 and the airflow within the first air duct 20, thereby improving the heat exchange effect of the air conditioner.

[0045] Optionally, a through slot is formed in the middle of the heat exchanger 50, and the air inlet duct is set in the through slot. Taking advantage of the poor ventilation capacity and low airflow in the middle position of the first air duct 20, a through slot is formed in the middle of the heat exchanger 50, where the heat exchange capacity is poor, so that the air inlet duct is set in the through slot. This makes full use of the structure of the heat exchanger 50 to reduce the overall longitudinal length of the heat exchanger 50 and the air inlet duct, further realizing the miniaturization of the air conditioner as a whole, while not affecting the heat exchange effect of the heat exchanger 50.

[0046] In some embodiments, such as Figure 4 As shown, the air conditioner also includes a surround panel 60, which is located at the air outlets of the first air duct 20 and the second air duct 30 and is configured to surround the fan 40, defining a mixing chamber. The function of the mixing chamber is to provide a cavity for the heat exchange airflow blown out of the first air outlet 22 to be fully mixed with the indoor airflow blown out of the second air outlet 32 ​​before being blown out. On the one hand, this can play a role in temperature uniformity, and on the other hand, it can disrupt the airflow direction and reduce the airflow speed, making the airflow blowing on the user more gentle and mild, thereby improving the user experience.

[0047] Optionally, one or more tail slots 61 are provided at the free end of the enclosure 60. The high-speed airflow accelerated by the fan 40 in the first air duct 20 and the second air duct 30 mixes in the mixing chamber, which can cause an increase in noise. Therefore, providing one or more tail slots 61 at the free end of the enclosure 60 can effectively reduce noise.

[0048] Optionally, the opening of the enclosure 60 is concave. Setting the opening of the enclosure 60 to be concave helps to disperse airflow, thereby reducing noise.

[0049] In some embodiments, such as Figure 8 As shown, the fan 40 has multiple outer ring blades 41 and inner ring blades 42 arranged alternately. By arranging the outer ring blades 41 and inner ring blades 42 alternately, the heat exchange airflow accelerated by the outer ring blades 41 and the indoor airflow passing through the inner ring blades 42 can be fully mixed, thereby improving the temperature uniformity of the air conditioner.

[0050] It is understood that the "free end" in the embodiments of this application refers to the end of the component that is not connected to other components.

[0051] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioner, comprising a housing, a first air duct disposed within the housing, and a heat exchanger located within the first air duct, characterized in that, Also includes: The second duct is installed inside the first air duct, defining the second air duct; A fan includes an outer ring fan blade and an inner ring fan blade arranged coaxially, wherein the outer ring fan blade is disposed at the first air outlet of the first air duct, and the inner ring fan blade is disposed at the second air outlet of the second air duct; The second pipe includes: an air inlet pipe, including a second air inlet and a first gas flow section; and an air outlet pipe, including a second gas flow section and a second air outlet connected to the first gas flow section. The air intake direction of the second air inlet is different from that of the first air inlet of the first air duct. The air intake direction of the second air inlet is perpendicular to the air outlet direction of the second air outlet. The first air inlet is located on the back panel of the air conditioner, the second air inlet is located on the side wall of the air conditioner, and the second air outlet is located on the front baffle of the air conditioner.

2. The air conditioner according to claim 1, characterized in that, The diameter of the air outlet duct increases from the air inlet end to the air outlet end.

3. The air conditioner according to claim 1, characterized in that, The second pipe is located between the heat exchanger and the first air outlet.

4. The air conditioner according to claim 1, characterized in that, The second pipe and the heat exchanger are connected in a non-contact manner.

5. The air conditioner according to any one of claims 1 to 4, characterized in that, Also includes: The enclosure, located at the air outlets of the first and second air ducts, is configured to enclose the fan and define the mixing chamber.

6. The air conditioner according to claim 5, characterized in that, The free end of the enclosure is provided with one or more tail grooves.

7. The air conditioner according to claim 5, characterized in that, The opening of the enclosure is concave.

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