A fresh air cabinet type air conditioner indoor unit

Abstract

The present invention provides a fresh air cabinet air conditioner indoor unit, comprising: a casing, having a casing air inlet and at least one casing air outlet; at least one air supply assembly, arranged in the casing, the air supply assembly comprising a centrifugal fan and a volute arranged outside the centrifugal fan, and the centrifugal fan is configured to suck in indoor air from the casing air inlet and cause it to be sent to the indoor environment again through the casing air outlet; a heat exchanger, arranged on the air inlet main air duct between the volute of the centrifugal fan and the casing air inlet, so that the indoor air entering through the casing air inlet can exchange heat with the heat exchanger; and a fresh air device, arranged below the air supply assembly; comprising an air inlet module and a fan module connected thereto; and the air inlet module is located at the lower part of the fan module; at least one air supply assembly is also configured to suck in at least part of the outdoor fresh air discharged by the fresh air fan from the casing air inlet, and discharge it from the casing air outlet after heat exchange with the heat exchanger.

Description

Technical Field

[0001] The invention relates to the technical field of fresh air air conditioners, and in particular to an indoor unit of a fresh air cabinet air conditioner. Background Art

[0002] Air conditioners are a very widely used household appliance. They generally have heating and cooling functions. They adjust the temperature of indoor air when the ambient temperature is too low or too high, providing users with a suitable indoor environment and effectively improving the quality of life of users.

[0003] However, since the current air conditioner only circulates indoor air to heat or cool it when heating or cooling, and users will close the door of the room at the same time in order to maintain the indoor temperature, the indoor air quality will gradually deteriorate over time, thus causing adverse effects on the user's health. In particular, in recent years, air pollution has become increasingly severe, especially in the winter heating season, people are reluctant to open windows for ventilation, so the indoor air quality will become worse and worse, and the oxygen content will become lower and lower, affecting health. Summary of the invention

[0004] An object of the present invention is to provide a fresh air cabinet air conditioner indoor unit to at least solve some of the defects in the prior art.

[0005] A further object of the present invention is to improve indoor air quality.

[0006] Another further object of the present invention is to simplify the internal structure of the indoor unit of the fresh air cabinet air conditioner and reduce the cost.

[0007] In particular, the present invention provides a fresh air cabinet air conditioner indoor unit, comprising:

[0008] a casing having a casing air inlet and at least one casing air outlet;

[0009] At least one air supply assembly is disposed in the casing, the air supply assembly includes a centrifugal fan and a volute disposed outside the centrifugal fan, and the centrifugal fan is configured to suck indoor air from the casing air inlet and cause it to be delivered to the indoor environment again through the casing air outlet;

[0010] A heat exchanger is disposed on the main air inlet duct between the volute of the centrifugal fan and the air inlet of the casing, so that indoor air entering through the air inlet of the casing exchanges heat with the heat exchanger; and

[0011] The fresh air device is arranged below the air supply component; wherein

[0012] The fresh air device includes an air inlet module and a fan module connected thereto; and the air inlet module is located at the lower part of the fan module;

[0013] The air inlet module defines an air inlet cavity inside, and the air inlet cavity is connected to a fresh air inlet pipe leading to the outside;

[0014] The fan module includes:

[0015] The air supply cavity is connected to the air inlet cavity;

[0016] A fresh air fan is located on the side of the air supply cavity close to the air inlet of the casing;

[0017] The volute is arranged outside the fresh air fan;

[0018] The air inlet of the volute of the fresh air fan is connected to the air inlet cavity, and the air outlet is connected to the fresh air outlet duct outside the casing, the air outlet of the fresh air outlet duct faces the top of the casing, and the fresh air fan is configured to inhale outdoor fresh air from the air inlet cavity and discharge it from the air outlet of the volute; and

[0019] At least one air supply component is also configured to inhale at least a portion of outdoor fresh air exhausted by the fresh air fan from the air inlet of the casing, and discharge it from the air outlet of the casing after heat exchange with the heat exchanger.

[0020] Preferably, the air outlet of the fresh air outlet duct is located below the air inlet of the casing.

[0021] Preferably, the indoor unit of the fresh air cabinet air conditioner further includes:

[0022] The electrical box is installed on the upper part of the fresh air device.

[0023] Preferably, the upper portion of the air supply cavity includes a horizontal section extending backward from the front portion of the casing and an inclined section extending upward along the horizontal section toward the air outlet of the volute of the fresh air fan;

[0024] The electrical box is located on the inclined section.

[0025] Preferably, at least one air supply assembly includes a first air supply assembly and a second air supply assembly disposed below the first air supply assembly; and

[0026] At least one air outlet of the housing includes a top air outlet and a lower air outlet, and the first air supply assembly and the second air supply assembly are configured to cause air to flow to the indoor environment through the top air outlet and the lower air outlet, respectively.

[0027] Preferably, the rotation axes of the centrifugal fans of the first air supply assembly and the second air supply assembly are parallel; and

[0028] The rotation axis of the fresh air fan is perpendicular to the vertical plane where the rotation axes of the centrifugal fans of the first air supply assembly and the second air supply assembly are located.

[0029] Preferably, the fresh air device further comprises an air guide plate, which is arranged opposite to the air inlet of the air inlet cavity, and longitudinally divides the air inlet cavity into a first air inlet cavity and a second air inlet cavity;

[0030] There is a gap between the bottom end of the air guide plate and the bottom of the air inlet cavity; after the outdoor fresh air enters the first air inlet cavity, it changes its flow direction through the air guide plate and enters the second air inlet cavity through the gap.

[0031] Preferably, a purification module is provided on one side of the air inlet chamber close to the air supply chamber, for purifying outdoor air delivered to the indoor space.

[0032] Preferably, a filter screen is detachably provided at the air inlet of the fresh air inlet duct.

[0033] Preferably, the fresh air device operates independently of the indoor machine for heating or cooling.

[0034] The fresh air cabinet air conditioner indoor unit of the present invention has a fresh air device added to the traditional cabinet air conditioner indoor unit. Therefore, during the air-conditioning cooling or heating process, even if the windows are closed, outdoor fresh air can be introduced into the room through the fresh air device, providing continuous and fresh air for the closed indoor space, thereby increasing the oxygen content of the indoor air and preventing air-conditioning disease.

[0035] Furthermore, the indoor unit of the fresh air cabinet air conditioner of the present invention is particularly suitable for air conditioners with dual centrifugal fans supplying air up and down. It has a large air supply volume and can timely update the indoor air. After the outdoor fresh air is delivered to the room, it is delivered to the room again after heat exchange through the indoor unit heat exchanger to maintain the stability of the indoor temperature. The structure of the fresh air device is reasonably designed so that the electrical box is installed obliquely above the fresh air device, effectively utilizing the space inside the indoor unit, so that more space is used for the circulation of outdoor fresh air. In addition, a purification device is installed in the fresh air device to purify the outdoor fresh air entering the room, especially now that air pollution is becoming increasingly severe. The purified air is delivered to the room to improve the quality of the indoor air and reduce the harm of polluted air to the body.

[0036] Furthermore, the fresh air device of the present invention can be installed inside the indoor unit and integrated with the indoor unit, or installed outside the indoor unit. Regardless of the installation state, the cost of using the fresh air system in the prior art can be greatly reduced, and the noise is low, providing a good user experience.

[0037] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0039] Figure 1 is a schematic structural diagram of the overall front part of a fresh air cabinet air conditioner indoor unit according to an embodiment of the present invention;

[0040] Figure 2 yes Figure 1 The overall rear schematic structural diagram of the indoor unit of the fresh air cabinet air conditioner is shown;

[0041] Figure 3 yes Figure 1 The schematic internal structure diagram of the indoor unit of the fresh air cabinet air conditioner shown;

[0042] Figure 4 yes Figure 3 The gas flow diagram of the indoor unit of the fresh air cabinet air conditioner is shown;

[0043] Figure 5 yes Figure 3 A schematic structural diagram of a fresh air device according to an embodiment of the present invention;

[0044] Figure 6 yes Figure 3 A schematic structural diagram of a fresh air device according to another embodiment is shown. DETAILED DESCRIPTION

[0045] Figure 1 1 is a schematic structural diagram of the entire front portion of a fresh air cabinet air conditioner indoor unit 10 according to an embodiment of the present invention; Figure 2 yes Figure 1 The overall rear schematic structural diagram of the fresh air cabinet air conditioner indoor unit 10 is shown; Figure 3 yes Figure 1 The internal schematic structure diagram of the fresh air cabinet air conditioner indoor unit 10 is shown. Figure 1 As can be seen from the figure, the indoor unit 10 of the fresh air cabinet air conditioner provided by the present invention includes, in addition to the indoor unit having the same appearance and performance as the indoor unit in the prior art, a fresh air device 200 is also included at the bottom of the interior. Figures 1 to 3 It can be known from the analysis that those skilled in the art are familiar with that the indoor unit 10 includes a housing 100, at least one air supply component and a heat exchanger 130 are arranged inside the housing 100, and a housing air inlet 101 and at least one housing air outlet (102 or 103) are provided on the housing 100. Indoor air is introduced into the indoor unit 10 from the housing air inlet 101 through any air supply component, and after heat exchange (cooling or heating) by the heat exchanger 130, the heat-exchanged air is introduced into the room from the housing air outlet (102 or 103), and the cycle is repeated. When the ambient temperature is too low or too high, the temperature of the indoor air is adjusted to reach the user's preset temperature, providing the user with a suitable indoor environment, and effectively improving the user's quality of life.

[0046] Furthermore, if Figure 2 and Figure 3 As shown, the air outlet 203 of the fresh air device 200 of the present invention leads to the outside of the casing 100 of the indoor unit 10, and the air outlet 203 faces the top of the casing 100. At least one air supply component is configured to inhale at least part of the outdoor fresh air discharged by the fresh air fan 222 from the casing air inlet 101, and discharge it from the casing outlet (102 or 103) after heat exchange with the heat exchanger 130, thereby completing the transportation of outdoor fresh air from outdoor to indoor.

[0047] After the outdoor fresh air of the present invention is introduced by the fresh air device 200, it is directly sent to the outside of the casing air inlet 101 instead of being sent into the casing 100. The outdoor fresh air sent into the room is then sucked into the casing 100 by at least one air supply component, and after heat exchange by the heat exchanger 130 of the indoor unit 10, it quickly reaches the indoor set temperature and is sent into the room again from the casing air outlet (102 or 103), so that the indoor temperature will not fluctuate greatly, the indoor temperature is kept stable, and a comfortable and healthy environment is provided to the user.

[0048] Specifically, at least one air supply assembly is arranged in the housing 100, wherein preferably, in the present invention, at least one air supply assembly includes a first air supply assembly 110 and a second air supply assembly 120, and the second air supply assembly 120 is arranged below the first air supply assembly 110. The first air supply assembly 110 and the second air supply assembly 120 both include a centrifugal fan (111 and 121) and a volute (112 and 122) arranged outside the centrifugal fan (111 and 121), and the centrifugal fan (111 and 121) is configured to inhale indoor air and outdoor fresh air from the housing air inlet 101 and cause them to be delivered into the indoor environment again through the housing air outlet (102 or 103).

[0049] The heat exchanger 130 is disposed on the main air inlet duct between the volute (112 and 122) of the centrifugal fan (111 and 121) and the casing air inlet 101, so that indoor air and outdoor fresh air entering through the casing air inlet 101 can exchange heat with the heat exchanger 130.

[0050] At least one housing air outlet (102 or 103) includes a top air outlet 102 and a bottom air outlet 103, wherein the top air outlet 102 corresponds to the air outlet of the volute 112 of the first air supply assembly 110, and the bottom air outlet 103 corresponds to the air outlet of the volute 122 of the second air supply assembly 120. The first air supply assembly 110 and the second air supply assembly 120 are configured to cause the gas to be transported from the main air duct after heat exchange through the heat exchanger 130, and finally flow to the indoor environment through the top air outlet 102 and the bottom air outlet 103 respectively.

[0051] In a specific embodiment, Figure 4 yes Figure 3 The gas flow diagram of the indoor unit 10 of the fresh air cabinet air conditioner is shown; Figure 4The middle arrow shows a schematic diagram of the gas flow of the indoor unit 10 of the fresh air cabinet air conditioner (the thick arrow represents the flow direction of indoor air, and the thin arrow represents the flow direction of outdoor fresh air). The first air supply component 110 and the second air supply component 120 can operate simultaneously or separately.

[0052] When the first air supply assembly 110 or the second air supply assembly 120 is operated alone, after the outdoor fresh air is delivered to the surrounding of the casing air inlet 101 from the fresh air device 200, the indoor air and the outdoor fresh air are sucked into the indoor unit 10 from the casing air inlet 101, and the indoor air and the outdoor fresh air are delivered to the room through the top air outlet 102 or the lower air outlet 103 by the first air supply assembly 110 or the second air supply assembly 120, completing the air circulation. In this case, the indoor unit 10 of the fresh air cabinet air conditioner of the present invention and the cabinet air conditioner of the prior art have little difference in ventilation air volume and operation capacity, but can deliver outdoor fresh air to the room, update the indoor air in real time, and keep the indoor air fresh.

[0053] When the first air supply assembly 110 and the second air supply assembly 120 are running at the same time, their centrifugal fans (111 and 121) work together to deliver indoor air and outdoor fresh air to the room through the top air outlet 102 or the lower air outlet 103 respectively, completing the air circulation flow. When the first air supply assembly 110 and the second air supply assembly 120 are running at the same time, compared with the cabinet air conditioner in the prior art, the indoor unit 10 of the cabinet air conditioner provided by the present invention can realize up and down air supply, with a large air supply volume, and increase the ventilation capacity of the indoor unit 10. On the basis of the increased ventilation volume, the fresh air device 200 delivers outdoor fresh air to the room, and then the indoor unit 10 has enough power to deliver the fresh air to the room again after heat exchange by the heat exchanger 130, and deliver more outdoor fresh air after heat exchange to the room, which can quickly update the indoor air and improve the quality of the indoor air more effectively and timely.

[0054] In the above embodiment, the specific structure of the fresh air device 200 of the fresh air cabinet air conditioner indoor unit 10 is as follows:

[0055] Figure 5 yes Figure 3 A schematic structural diagram of a fresh air device 200 according to an embodiment is shown; the fresh air device 200 is arranged below the air supply component, specifically below the second air supply component 120.

[0056] The fresh air device 200 includes an air intake module 210 and a fan module 220. Specifically, in this embodiment, the fan module 220 is arranged above the air intake module 210. The air intake module 210 and the fan module 220 are distributed up and down inside the casing 100, and the air intake module 210 and the fan module 220 are connected up and down.

[0057] Further, it is understandable that the distribution positions of the air inlet module 210 and the fan module 220 can be various, such as longitudinally distributed to the left and right. In the present invention, it is preferably distributed up and down, and the specific reasons are described in detail below.

[0058] Specifically, the air inlet module 210 defines an air inlet cavity 211 therein, and the air inlet cavity 211 is connected to a fresh air inlet pipe 212 leading to the outside. The outdoor fresh air enters the air inlet cavity 211 from the fresh air inlet pipe 212 under the action of the fan module 220.

[0059] The fan module 220 includes an air supply chamber 221, a fresh air fan 222 and a volute 223. Specifically, the fresh air fan 222 is a centrifugal fan, the air supply chamber 221 is connected to the air inlet chamber 211, the centrifugal fan is located on the side of the air supply chamber 221 close to the air inlet 101 of the housing, and the volute 223 is arranged outside the fresh air fan 222. The air inlet of the volute 223 of the centrifugal fan is connected to the air inlet chamber 211, and its air outlet 202 is connected to the fresh air outlet pipe 224 leading to the outside of the housing 100, and the air outlet 203 of the fresh air outlet pipe 224 faces the top of the housing 100, so that more gas is directly transported to the housing air inlet 101; the centrifugal fan is configured to inhale fresh air from the outdoor air in the air inlet chamber 211, and send it to the outside of the housing 100 using the fresh air outlet pipe 224.

[0060] Part of the outdoor fresh air entering the room from the fan module 220 enters the indoor unit 10 from the housing air inlet 101 through the indoor unit 10 air supply component for heat exchange and is then sent to the room again. Therefore, the fresh air device 200 is selected to be installed on the side of the housing air inlet 101 as close to the indoor unit 10 as possible, so that the air supply component inhales more fresh air from the outdoor into the indoor unit 10, and discharges it into the room after heat exchange in the indoor unit 10. The more outdoor fresh air enters the indoor unit 10 for heat exchange, the smaller the indoor temperature fluctuation is, and the more stable the indoor temperature is. After the outdoor fresh air is sent to the room by the fan module 220, the first air supply component 110 and / or the second air supply component 120 are respectively sent to the room from the top air outlet 102 and the lower air outlet 103 to send fresh outdoor fresh air into the room, increase the oxygen content of the air in the closed room, and effectively reduce the probability of users suffering from air-conditioning disease.

[0061] In some preferred embodiments, the rotation axes of the centrifugal fans (111 and 121) of the first air supply assembly 110 and the second air supply assembly 120 are parallel; and the rotation axis of the fresh air fan 222 is perpendicular to the rotation axes of the centrifugal fans (111 and 121) of the first air supply assembly 110 and the second air supply assembly 120. The rotation axes of the centrifugal fans (111 and 121) of the first air supply assembly 110 and the second air supply assembly 120 are parallel, which reduces the noise of the indoor unit 10 and improves the user experience. The distribution of the fresh air fan 222, whose rotation axis can be perpendicular to the vertical plane or plane where the rotation axis of the centrifugal fans (111 and 121) of the first air supply assembly 110 and the second air supply assembly 120 are located, is mainly to set the centrifugal fans (111 and 121) longitudinally to save the internal space of the housing 100. In a specific embodiment of the present invention, the rotation axis of the fresh air fan 222 is perpendicular to the vertical plane where the rotation axes of the centrifugal fans (111 and 121) of the first air supply assembly 110 and the second air supply assembly 120 are located.

[0062] Furthermore, the radii of the impellers of the centrifugal fans (111 and 121) of the first air supply assembly 110 and the second air supply assembly 120 may be the same or different, and there is no requirement for the air supply capacity of the first air supply assembly 110 and the second air supply assembly 120, which may be the same or different. The second air supply assembly 120 may be an alternative air supply assembly. When the air conditioner is initially turned on, it is necessary to quickly lower or raise the indoor temperature and a large air volume circulation is required. The second air supply assembly 120 may be turned on to increase the air supply volume of the indoor unit 10 so that the indoor temperature quickly reaches the user's preset temperature. When the indoor temperature is stable, the second air supply assembly 120 may not be operated, and only the first air supply assembly 110 may be operated to maintain the indoor temperature stable. Therefore, the air supply capacity of the second air supply assembly 120 is not required to be the same as the air supply capacity of the first air supply assembly 110.

[0063] Alternatively, when the indoor air quality is seriously polluted and the oxygen content is low, and the fresh air device 200 needs to be turned on, the second air supply component 120 can be turned on and operated to play the function of auxiliary air supply, so that the indoor air can be quickly updated by outdoor fresh air, and the indoor air quality can be quickly restored to a good state.

[0064] As mentioned above, the air inlet module 210 and the fan module 220 of the fresh air device 200 of the present invention are arranged vertically, so as to more reasonably utilize the space inside the housing 100. Specifically, the fresh air cabinet air conditioner indoor unit 10 further includes an electrical box 140, such as Figure 3As shown, the electrical box 140 is arranged at the upper part of the fresh air device 200. In order to effectively utilize the limited space inside the casing 100 of the indoor unit 10, the upper part of the air supply chamber 221 includes a horizontal section 221a extending backward from the front of the casing 100 and an inclined section 221b extending upward along the horizontal section 221a toward the air outlet 202 of the volute 223 of the fresh air fan 222; the electrical box 140 is located on the inclined section 221b.

[0065] Generally, the electrical box 140 is horizontally distributed inside the casing 100. However, in the present invention, the electrical box 140 is creatively tilted and fixedly installed on the inclined section 221b of the air supply chamber 221 of the fresh air device 200. The air supply chamber 221 further plays a role as a bracket, reducing the original fixed structure of the electrical box 140, so that more space inside the casing 100 is used for gas circulation. Therefore, the fresh air cabinet air conditioner indoor unit 10 provided by the present invention not only has sufficient power to promote the flow of outdoor fresh air, but also has sufficient space for outdoor fresh air to enter the indoor unit 10.

[0066] Furthermore, the electrical box 140 is tilted, and the interior of the electrical box 140 faces the front of the casing 100, and the wiring groove of the electrical box 140 is close to the front column of the cabinet air conditioner, which is convenient for maintenance and wiring, not only improving the production efficiency of the production line, but also facilitating after-sales personnel to check and repair.

[0067] For the fresh air device 200, Figure 6 yes Figure 3 A schematic structural diagram of a fresh air device 200 of another embodiment is shown. The fresh air device 200 of this embodiment can be applied to the fresh air cabinet air conditioner indoor unit 10 in the above-mentioned embodiments.

[0068] In this embodiment, the fresh air device 200 also includes an air guide plate 213, which is arranged opposite to the air inlet 201 of the air inlet chamber 211. The air guide plate 213 longitudinally divides the air inlet chamber 211 into a first air inlet chamber 211a and a second air inlet chamber 211b; there is a gap between the bottom end of the air guide plate 213 and the bottom of the air inlet chamber 211; after the outdoor fresh air enters the first air inlet chamber 211a, it changes its flow direction through the air guide plate 213 and enters the second air inlet chamber 211b through the gap. The wind guide plate 213 plays two roles in the present embodiment. One is to block dust, preventing sand and dust in the outdoor fresh air from being directly sucked into the fresh air fan 222 by the fresh air device 200 and damaging the blades of the fresh air fan; the second is to play a role of centrifugal dust reduction. Under the action of the wind guide plate 213, the outdoor fresh air changes its flow direction after entering the air inlet chamber 211 from the fresh air inlet pipe 212, forming a circular circulating air inlet. The circular air inlet can make large particles be thrown out under the centrifugal action, preventing large particles from entering the fresh air fan 222. The two functions together ensure the effect of changing the fresh air.

[0069] In the fresh air device 200 in the above embodiments, a purification module is provided on the side of the air inlet chamber 211 close to the air supply chamber 221, which is used to purify the outdoor fresh air delivered to the room. The purification module 226 uses a strong electric field dielectric technology to purify the air delivered to the room. Specifically, the purification module 226 is an IFD purification device. IFD is a dust removal technology, which is the most advanced and efficient technology among the existing dust removal technologies, and has strong effectiveness. A strong electric field using dielectric materials as carriers. The dielectric material forms a honeycomb hollow microchannel, and the dielectric wrapped electrode sheet forms a strong electric field in the channel, which exerts a huge attraction on the charged particles moving in the air, and can absorb almost 100% of the moving particles in the air while only generating minimal airflow impedance, and the removal effect of particulate pollutants such as PM2.5 is particularly significant. The above purification module 226 can greatly reduce PM2.5 particles in the air in haze-ridden weather, and effectively improve the quality of outdoor air delivered to the room.

[0070] The purification module 226 may also use HEPA filtration, which is a highly efficient filter paper that can filter 99% of fine particles in the air, ensuring that the air output by the fan module 220 is clean and avoiding secondary pollution.

[0071] In addition, a filter is detachably installed at the air inlet of the fresh air inlet pipe 212 to prevent dust or mosquitoes from entering the fresh air device 200 and polluting or damaging the internal structure of the fresh air device 200, thereby preventing the quality of fresh air exchange of the fresh air device 200 from being reduced.

[0072] The fresh air device 200 of the present invention can purify the fresh air entering the room by installing a filter and a purification device. Especially as air pollution is becoming increasingly serious, the purified air can be sent into the room to improve the quality of the indoor air and reduce the harm of polluted air to the body.

[0073] In each of the above embodiments, the fresh air device 200 can be operated independently of the indoor unit 10 for heating or cooling, and of course, can also be operated synchronously with the indoor unit 10 for heating and cooling.

[0074] The fresh air cabinet air conditioner indoor unit 10 of the present invention and the fresh air device 200 can be installed inside the indoor unit 10, integrated with the indoor unit 10, or installed outside the indoor unit 10. Regardless of the installation state, the cost of using the fresh air system in the prior art can be greatly reduced, the noise is low, and the user experience is good.

[0075] In the following description, the directions or positional relationships indicated by "front", "back", "up", "down", "top", "bottom", "inside", "outside", "horizontal", "longitudinal", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0076] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A fresh air cabinet air conditioner indoor unit, include: a casing having a casing air inlet and at least one casing air outlet; At least one air supply assembly is disposed in the housing, the air supply assembly includes a centrifugal fan and a volute disposed outside the centrifugal fan, and the centrifugal fan is configured to suck indoor air from the housing air inlet and cause it to be delivered to the indoor environment again through the housing air outlet; A heat exchanger is arranged on the main air inlet duct between the volute of the centrifugal fan and the air inlet of the casing, so that the indoor air entering through the air inlet of the casing exchanges heat with the heat exchanger; as well as A fresh air device is arranged below the air supply component; wherein The fresh air device includes an air intake module and a fan module connected thereto; and the air intake module is located at the lower part of the fan module; The air inlet module defines an air inlet cavity inside, and the air inlet cavity is connected to a fresh air inlet pipe leading to the outdoors; The fan module comprises: An air supply cavity, connected to the air inlet cavity; A fresh air fan is located at a side of the air supply cavity close to the air inlet of the casing; The volute is arranged outside the fresh air blower; wherein The air inlet of the volute of the fresh air fan is connected to the air inlet cavity, and the air outlet is connected to the fresh air outlet pipe outside the casing, the air outlet of the fresh air outlet pipe faces the top of the casing, and the fresh air fan is configured to inhale outdoor fresh air from the air inlet cavity and discharge it from the air outlet of the volute; and At least one of the air supply components is further configured to inhale at least a portion of the outdoor fresh air discharged by the fresh air blower from the air inlet of the casing, and discharge it from the air outlet of the casing after heat exchange with the heat exchanger; The air outlet of the fresh air outlet duct is located below the air inlet of the casing; The fresh air cabinet air conditioner indoor unit further includes: An electrical box, arranged on the upper part of the fresh air device; The upper part of the air supply cavity includes a horizontal section extending backward from the front part of the casing and an inclined section extending upward along the horizontal section toward the air outlet of the volute of the fresh air fan; The electrical box is located on the inclined section; The fresh air device further comprises an air guide plate, which is arranged opposite to the air inlet of the air inlet cavity and longitudinally divides the air inlet cavity into a first air inlet cavity and a second air inlet cavity; There is a gap between the bottom end of the air guide plate and the bottom of the air inlet cavity; Under the action of the air guide plate, the outdoor fresh air changes its flow direction after entering the air inlet cavity from the fresh air inlet pipe to form a ring-shaped air inlet.

2. The fresh air cabinet air conditioner indoor unit according to claim 1, in, The at least one air supply component includes a first air supply component and a second air supply component disposed below the first air supply component; and The at least one housing air outlet comprises a top air outlet and a lower air outlet, and the first air supply assembly and the second air supply assembly are configured to cause air to flow to an indoor environment through the top air outlet and the lower air outlet, respectively.

3. The fresh air cabinet air conditioner indoor unit according to claim 2, in, The rotation axes of the centrifugal fans of the first air supply assembly and the second air supply assembly are parallel; and The rotation axis of the fresh air fan is perpendicular to the vertical plane where the rotation axes of the centrifugal fans of the first air supply assembly and the second air supply assembly are located.

4. The fresh air cabinet air conditioner indoor unit according to claim 1, in, After entering the first air inlet cavity, the outdoor fresh air changes its flow direction through the air guide plate and enters the second air inlet cavity through the gap.

5. The fresh air cabinet air conditioner indoor unit according to claim 1, in, A purification module is provided on one side of the air inlet chamber close to the air supply chamber, for purifying the outdoor air delivered to the indoor room.

6. The fresh air cabinet air conditioner indoor unit according to claim 1, in, A filter screen is detachably provided at the air inlet of the fresh air inlet pipe.

7. The fresh air cabinet air conditioner indoor unit according to claim 1, in, The fresh air device operates independently of the indoor unit for heating or cooling.

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