Centrifugal fan, fresh air component and air conditioner

Abstract

The present invention provides a centrifugal fan, a fresh air component and an air conditioner, wherein a guide ring and a volute are detachably connected. When replacing the fan blades of the centrifugal fan, the fan blades of the centrifugal fan can be replaced by simply removing the guide ring without removing the volute. The centrifugal fan comprises a motor, an impeller and a volute, wherein the motor and the impeller are arranged inside the volute, and the volute has an air inlet, and the opening size of the air inlet is at least large enough for the impeller to enter and exit; a guide ring is detachably installed at the air inlet, and the guide ring can cover part of the opening of the air inlet to limit the axial movement of the impeller at the air inlet.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a centrifugal fan, a fresh air component and an air conditioner. Background Art

[0002] The centrifugal fan includes a motor, centrifugal fan blades and a volute. The motor and the centrifugal fan blades are arranged in the volute. At the air inlet of the volute, a guide ring is generally provided at the air inlet of the volute to allow air to enter the centrifugal fan blades more smoothly. The inner diameter of the guide ring is generally smaller than the diameter of the centrifugal fan blades. Therefore, when replacing the centrifugal fan blades, the volute needs to be disassembled and then the centrifugal fan blades are removed, which makes maintenance troublesome and the efficiency of replacing the centrifugal fan blades is low. Summary of the invention

[0003] To solve the above problems, the present invention provides a centrifugal fan, a fresh air assembly and an air conditioner, wherein the guide ring and the volute are detachably connected. When replacing the fan blades of the centrifugal fan, only the guide ring needs to be removed to replace the fan blades of the centrifugal fan without removing the volute.

[0004] The present invention provides a centrifugal fan, comprising a motor, an impeller and a volute, wherein the motor and the impeller are arranged inside the volute, and the volute has an air inlet, the opening size of which is at least large enough for the impeller to enter and exit; a guide ring is detachably installed at the air inlet, and the guide ring can cover part of the opening of the air inlet to limit the axial movement of the impeller at the air inlet.

[0005] When replacing the impeller of the centrifugal fan, it is only necessary to remove the guide ring, and the impeller of the centrifugal fan can be replaced through the air inlet of the volute without disassembling the volute.

[0006] Furthermore, the guide ring is snap-connected to the volute, or bolted, or magnet-connected.

[0007] Furthermore, there are two impellers, which are respectively connected to the left and right output shafts of the motor and are located in the left and right air inlets of the volute.

[0008] The centrifugal fan adopts a double-suction centrifugal fan. The use of a double-suction centrifugal fan can increase the air intake volume and make the fresh air exchange effect better.

[0009] Furthermore, the volute includes a front volute and a rear volute, and the front volute and the rear volute are detachably connected.

[0010] When repairing or replacing the motor, only the front volute needs to be removed for replacement or repair without removing the entire centrifugal fan from the air conditioner.

[0011] Furthermore, the guide ring is mainly composed of a first guide half ring and a second guide half ring, the first guide half ring is arranged on the front volute, and the second guide half ring is arranged on the rear volute.

[0012] In this way, when disassembling the front and rear volutes, the guide ring can be disassembled together without having to disassemble the guide ring separately. In addition, if the centrifugal fan is installed in a small space, it is difficult to install the entire guide ring due to space constraints. The guide ring is divided into two parts, front and rear, which does not affect installation even in a small space.

[0013] Furthermore, at least one fixing plate extends from the outer side of the guide ring, and the fixing plate and the volute are connected by screws.

[0014] The guide ring is fixed to the volute by screw connection, which is easy to disassemble and assemble.

[0015] Furthermore, there are two guide rings.

[0016] The present invention provides a fresh air component, comprising the above-mentioned centrifugal fan.

[0017] Furthermore, it also includes an air guide component, which is detachably connected to the volute.

[0018] The air guide component guides the air outlet of the centrifugal fan and further limits the air outlet direction.

[0019] Furthermore, a purification module is also included.

[0020] The purification module can purify the air entering the room to prevent large particles and harmful substances from entering the indoor environment.

[0021] The present invention also provides an air conditioner, comprising the above-mentioned fresh air component.

[0022] The fresh air component brings outdoor air into the room and filters and purifies the outdoor air through the purification module, so that the air conditioner also has a fresh air function. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the fresh air component;

[0025] Figure 2This is an exploded schematic diagram of the fresh air component;

[0026] Figure 3 The figure is a schematic diagram of the assembly of the guide ring;

[0027] Figure 4 The schematic diagram of the splitting of the guide ring;

[0028] Figure 5 is a structural schematic diagram of an air conditioner;

[0029] Figure 6 This is a schematic diagram of an air conditioner explosion.

[0030] Description of reference numerals:

[0031] 100-centrifugal fan; 110-motor; 120-impeller; 130-volute; 131-front volute; 132-rear volute; 133-guide ring; 1331-fixed plate; 200-fresh air component; 210-air guide component; 220-purification module; 230-side connection part; 240-bottom connection part; 300-air conditioner; 310-front panel; 311-fresh air outlet; 320-rear panel; 321-air inlet; 330-lower support plate; 331-first opening; 332-second opening. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] Example 1

[0034] A centrifugal fan 100 includes a motor 110, an impeller 120 and a volute 130, wherein the motor 110 and the impeller 120 are arranged inside the volute 130, and the volute 130 has an air inlet, and the opening size of the air inlet is at least large enough for the impeller 120 to enter and exit; a guide ring 133 is detachably installed at the air inlet, and the guide ring 133 can cover part of the opening of the air inlet to limit the axial movement of the impeller 120 at the air inlet.

[0035] When replacing the impeller 120 of the centrifugal fan 100 , it is only necessary to remove the guide ring 133 , and then the impeller 120 of the centrifugal fan 100 can be replaced through the air inlet of the volute 130 , without disassembling the volute 130 .

[0036] The guide ring 133 is connected to the volute 130 by snapping, bolting, or magnet adsorption.

[0037] like Figure 4As shown, at least one fixing sheet 1331 extends from the outer side of the guide ring 133, and the fixing sheet 1331 and the volute 130 are connected by screws, so that the guide ring 133 is fixed to the volute 130, and only one is schematically drawn in the figure.

[0038] There are two impellers 120 , which are respectively connected to the left and right output shafts of the motor 110 and are located in the left and right air inlets of the volute 130 .

[0039] The centrifugal fan 110 is a double-suction centrifugal fan. The use of a double-suction centrifugal fan can increase the air intake volume and achieve a better fresh air exchange effect.

[0040] There are two guide rings 133, which are respectively located outside the two air inlets.

[0041] The volute 130 includes a front volute 131 and a rear volute 132, and the front volute 131 and the rear volute 132 are detachably connected, preferably screwed. When repairing or replacing the motor 110, only the front volute 131 needs to be removed for replacement or repair, without removing the centrifugal fan 100 from the air conditioner.

[0042] Corresponding to the structure of splitting the volute front and back, the guide ring 133 is mainly composed of a first guide half ring and a second guide half ring, the first guide half ring is arranged on the front volute 131, and the second guide half ring is arranged on the rear volute 132. In this way, when disassembling the front and rear volutes, the guide ring 133 can be disassembled front and back together without disassembling the guide ring separately; in addition, if the centrifugal fan is installed in a small space, it is difficult to install the entire guide ring due to space constraints. The guide ring is divided into two parts, front and back, so that it does not affect installation even in a small space.

[0043] A center hole is provided at the center of the impeller 120, and the cross-sectional shape of the center hole matches the cross-sectional shape of the motor shaft of the motor 110, for example, it can be square, elliptical, pentagonal, hexagonal or irregular in shape, to prevent the hub of the impeller 120 and the output shaft of the motor 110 from rotating relative to each other.

[0044] Example 2

[0045] A fresh air assembly 200 includes the centrifugal fan 100 and the air guide component 210 described in Example 1. The air guide component 210 is detachably connected to the volute 130 of the centrifugal fan 100. The fresh air device 200 is connected to the outdoor air and can draw the outdoor air into the room to achieve the function of replacing the indoor fresh air.

[0046] An air inlet is arranged on the lower surface of the air guide component 210, which is opposite to the air outlet of the centrifugal fan 100. An air outlet is arranged on the front surface of the air guide component 210, and the air outlet is connected to the indoor environment. The air guide component 210 guides the air outlet of the centrifugal fan 100 and further limits the air outlet direction.

[0047] The fresh air device 200 also includes a purification module 220. There are two purification modules 220, which are respectively arranged outside the left and right air inlets of the volute 130. The purification module 220 can purify the air entering the room to prevent large particles and harmful substances in the outdoor area from entering the indoor environment.

[0048] Example 3

[0049] An air conditioner 300 includes a fresh air component 200 and a front panel 210 , wherein the fresh air component 200 is located at the lower part of the air conditioner 300 .

[0050] The fresh air assembly 200 is provided with a side connection portion 230 and a bottom connection portion 240 for connecting with the side frame and the bottom frame of the air conditioner 000 , so as to fix the fresh air assembly 200 in the air conditioner 300 .

[0051] An air inlet 321 is provided at a corresponding position of the rear panel 320 and the air inlet of the volute 130 , and the air inlet 321 is connected to the outdoor air, or is connected to the outdoor air and the indoor air at the same time.

[0052] A fresh air outlet 311 is provided at a position corresponding to the air outlet of the front panel 310 and the air guide component 210 .

[0053] A lower support plate 330 is also provided between the fresh air device 200 and the front panel 310. A first opening 331 is provided at a position corresponding to the lower support plate 330 and the air guide component 210, which can support the air guide component 210 and reduce the vibration of the air guide component 210, thereby reducing the wind outlet noise. In addition, the lower support plate 330 can also reduce the propagation of the noise of the fresh air device 200, reduce indoor noise, and improve comfort.

[0054] A second opening 332 is provided at a position corresponding to the lower support plate 330 and the purification module 220 , and the purification module 220 passes through the second opening 332 . When replacing the purification module 220 , only the front panel 310 needs to be removed to replace the purification module 220 , without removing the lower support plate 330 .

[0055] The fresh air component brings outdoor air into the room, and filters and purifies the outdoor air through the purification module, so that the air conditioner 300 also has a fresh air function.

[0056] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0057] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air conditioner, characterized in that: The air conditioner comprises a fresh air component (200), a front panel (310) and a rear panel (320); the fresh air component (200) comprises a centrifugal fan (100), an air guide component (210) and a purification module (220); The centrifugal fan (100) comprises a motor (110), an impeller (120) and a volute (130); the motor (110) and the impeller (120) are arranged inside the volute (130); the volute (130) has an air inlet, the opening size of which is at least large enough for the impeller (120) to enter and exit; a guide ring (133) is detachably mounted at the air inlet, and the guide ring (133) can cover a part of the opening of the air inlet to limit the axial movement of the impeller (120) at the air inlet; there are two impellers (120), the two impellers (120) are respectively connected to the left and right output shafts of the motor (110), and are located in the left and right air inlets of the volute (130); The air guide component (210) is detachably connected to the volute (130) of the centrifugal fan (100), and the fresh air component (200) is in communication with outdoor air; an air inlet is provided on the lower surface of the air guide component (210), opposite to the air outlet of the centrifugal fan (100); an air outlet is provided on the front surface of the air guide component (210), and the air outlet is in communication with the indoor environment; There are two purification modules (220), which are respectively arranged outside the left and right air inlets of the volute (130); A lower support plate (330) is provided between the fresh air component (200) and the front panel (310); a first opening (331) is provided at a position corresponding to the lower support plate (330) and the air guide component (210), for supporting the air guide component (210); and a second opening (332) is provided at a position corresponding to the lower support plate (330) and the purification module (220), and the purification module (220) passes through the second opening (332).

2. The air conditioner according to claim 1, characterized in that: The guide ring (133) is connected to the volute (130) by snapping, bolting, or magnet adsorption.

3. The air conditioner according to claim 1, characterized in that: The volute (130) comprises a front volute (131) and a rear volute (132), and the front volute (131) and the rear volute (132) are detachably connected.

4. The air conditioner according to claim 3, characterized in that: The guide ring (133) is mainly composed of a first guide half ring and a second guide half ring, wherein the first guide half ring is arranged on the front volute (131), and the second guide half ring is arranged on the rear volute (132).

5. The air conditioner according to claim 1, characterized in that: At least one fixing plate (1331) extends from the outer side of the guide ring (133), and the fixing plate (1331) and the volute (130) are connected by screws.

6. The air conditioner according to claim 1, characterized in that: There are two guide rings (133).

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