Fan system, air conditioner and air outlet control method

Abstract

The present invention provides a fan system, an air conditioner and an air outlet control method, wherein the fan system comprises: a plurality of fan structures, each of which comprises a ventilation duct and a plurality of air outlets, and the plurality of air outlets are connected to the ventilation duct; the ventilation ducts of the plurality of fan structures are independent of each other; wherein each fan structure comprises a fan component and a volute tongue component arranged in the ventilation duct, and each volute tongue component is rotatably arranged around a corresponding fan component to block between the fan component and at least one of the plurality of air outlets. The fan system in the present invention solves the comfort problem of "hot head and cold feet" when heating and "cold wind blowing people" when cooling in the air conditioner in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning, and in particular to a fan system, an air conditioner and an air outlet control method. Background Art

[0002] The human body has different demands for "cooling in a hot environment" and "heating in a cold environment". The cooling demand and heating demand are divided into different demands in a dynamic environment (the air conditioner is turned on and the indoor temperature has not reached a stable state) and a steady-state environment (the air conditioner has been running for a period of time and the indoor temperature has tended to be stable).

[0003] Cooling requirements for hot environments:

[0004] In the dynamic environment, in a hot environment, the head, back, chest and calves of the human body are more sensitive to cold stimulation. Therefore, when the air conditioner is turned on, the head, back, chest, calves and other parts of the human body are stimulated by cold air, which makes the human body feel more comfortable. In a steady-state environment, when cooling, the cold air blows directly on people, which can cause discomfort to the human body. When the cold air blows on people, it will also make people lose their minds and distract their work attention. And being in a state of direct cold air blowing for a long time can easily induce various diseases in the human body. Therefore, at this time, the human body does not want the cold air to blow directly on the body. The most easily accepted cooling method is the shower-style air supply, which avoids the cold air blowing directly on people and greatly increases the comfort.

[0005] Heating requirements for cold environments:

[0006] In a dynamic environment, in a cold environment, the head, thighs, calves and hands of the human body are more sensitive to thermal stimulation. The hot air stimulates the head, back, chest, calves and other parts of the human body, making the human body more comfortable. In a steady-state environment, because the heat rises, the room temperature is obviously stratified, and most of the heat accumulates in the upper area of ​​the room. The feet of the human body, which need warmth the most, cannot get warm. If the hot air can be sent to the feet first to warm the feet, it can greatly improve the steady-state thermal comfort of the human body in a cold environment.

[0007] Traditional air conditioners have a single air outlet form, which is the same for cooling and heating, and only change the direction of the airflow by adjusting the sweeping or air guide blades. However, due to the natural characteristics of air, hot air has a relatively small density and tends to float up, while cold air has a relatively large density and tends to sink.

[0008] Therefore, the existing air conditioner always has comfort problems during operation, such as "hot head and cold feet" when heating, "cold wind blowing on people" when cooling, etc.

[0009] Existing air conditioners with upper and lower air outlet functions require the upper and lower air outlets to supply air at the same time, and the output cooling and heating capacity can meet the maximum load demand. There is a problem. The cold air from the cooling lower air outlet blows on people, and the hot air from the heating upper air outlet floats up, causing "hot head and cold feet".

[0010] It can be seen that the air conditioner with upward and downward air outlet function in the prior art has the following problems:

[0011] Problem 1: You can open the upper air outlet only, but the cooling capacity cannot meet the maximum cooling load requirement when the upper air outlet is opened alone;

[0012] Problem 2: For heating, both upper and lower air outlets must be opened at the same time, and only the lower outlet cannot be opened. The reason is that the existing technology only opens the lower outlet with insufficient air volume and cannot meet the maximum heating load requirements.

[0013] Question 3: Existing air conditioners use a single centrifugal fan two-way air outlet system, which has the problem of a large fan blade diameter, resulting in a large external size of the air conditioner. Summary of the invention

[0014] The main purpose of the present invention is to provide a fan system, an air conditioner and an air outlet control method to solve the comfort problems of the air conditioner in the prior art, such as "hot head and cold feet" when heating and "cold wind blowing on people" when cooling.

[0015] According to a first aspect of the present invention, a fan system is provided, comprising: a plurality of fan structures, each of which comprises a ventilation duct and a plurality of air outlets, and the plurality of air outlets are all connected to the ventilation duct; the ventilation ducts of the plurality of fan structures are independent of each other; wherein each of the fan structures comprises a fan component and a volute tongue component arranged in the ventilation duct, and each volute tongue component is rotatably arranged around the corresponding fan component to block between the fan component and at least one of the plurality of air outlets.

[0016] Furthermore, the fan system also includes: a volute assembly, the volute assembly having a first air outlet area and a second air outlet area, wherein a plurality of air outlets of each fan structure are respectively arranged in the first air outlet area and the second air outlet area.

[0017] Furthermore, each ventilation duct includes a first duct section extending to a first air outlet area, a second duct section extending to a second air outlet area, and a fan installation cavity. The first duct section and the second duct section are both connected to the fan installation cavity, and the fan component and the volute tongue component are both installed in the fan installation cavity.

[0018] Furthermore, the first air duct sections of multiple fan structures are arranged along the thickness direction of the volute assembly; and / or the second air duct sections of multiple fan structures are arranged along the thickness direction of the volute assembly; and / or the first air duct sections and the second air duct sections of each fan structure are staggered along the width direction of the volute assembly.

[0019] Furthermore, the volute assembly includes: a volute cover, a volute body and a wind shield, wherein the volute body is arranged between the volute cover and the wind shield; wherein the volute cover and the volute body form a fan installation cavity of each fan structure; in the same fan structure, one of the first air duct segment and the second air duct segment is arranged between the volute cover and the volute body, and the other of the first air duct segment and the second air duct segment is arranged between the volute body and the wind shield.

[0020] Furthermore, a connecting opening for connecting the fan installation cavity and the first air duct section or the second air duct section is provided on the volute body; there are multiple connecting openings, each connecting opening is connected to the corresponding fan installation cavity; wherein the multiple connecting openings are arranged at intervals along the width direction of the volute body.

[0021] Furthermore, a recessed portion for forming a first air duct section and / or a second air duct section is provided on the wind shield; and / or an air inlet opening for communicating with the fan mounting cavity is provided on the volute cover; and / or a connecting opening for connecting the fan mounting cavity and the first air duct section or the second air duct section is provided on the volute body, and an inner wall surface of the connecting opening has an air guiding slope, which is inclined to the distribution direction of the volute body and the wind shield.

[0022] Furthermore, there are two fan structures, each of which has two air outlets, and the two air outlets are arranged in a vertical direction; and / or each ventilation duct includes multiple duct segments, and the multiple duct segments are arranged in one-to-one correspondence with the multiple air outlets, and the airflow flow directions of the multiple duct segments are cross-arranged; the volute tongue component of each fan structure is arranged between the fan component and the multiple duct segments; and / or the fan components of the multiple fan structures are arranged at intervals along the extension direction of the fan system.

[0023] According to a second aspect of the present invention, there is also provided an air conditioner, comprising a casing and a fan system arranged in the casing, wherein the fan system is the above-mentioned fan system.

[0024] Furthermore, the multiple air outlets of each fan structure of the fan system are divided into upper air outlets and lower air outlets, and the ventilation duct of each fan structure includes an upper duct section for communicating with the upper air outlet and a lower duct section for communicating with the lower air outlet, and the air conditioner includes: an upper air outlet mode, the volute tongue component of each fan structure is blocked between the fan component of the fan structure and the corresponding lower air duct section, so that the fan component is connected to the upper air outlet; a lower air outlet mode, the volute tongue component of each fan structure is blocked between the fan component of the fan structure and the corresponding upper air duct section, so that the fan component is connected to the lower air outlet; an upper and lower combined air outlet mode, the multiple fan structures of the fan system include an upper fan structure and a lower fan structure, the volute tongue component of the upper fan structure is blocked between the corresponding fan component and the lower air duct section, and the volute tongue component of the lower fan structure is blocked between the corresponding fan component and the upper air duct section.

[0025] Furthermore, the air conditioner also includes: an indoor temperature detection device, which is used to detect the indoor ambient temperature to control the rotation of the volute tongue components of each fan structure according to the indoor ambient temperature.

[0026] According to a third aspect of the present invention, there is also provided an air outlet control method, which is applicable to the above-mentioned fan system. The air outlet control method comprises: detecting the indoor ambient temperature T 内环 ; According to the indoor ambient temperature T 内环 The rotation of the volute tongue components of each fan structure is controlled to select the corresponding air outlet for air discharge.

[0027] Furthermore, the plurality of fan structures of the fan system include an upper fan structure and a lower fan structure, the plurality of air outlets of each fan structure of the fan system are divided into an upper air outlet and a lower air outlet, and the method for controlling the rotation of the volute tongue component of each fan structure includes: when the indoor ambient temperature T 内环 When the indoor temperature is greater than the preset temperature T, or when the indoor ambient temperature T 内环 With the preset temperature T 设定 When the difference between them is greater than △T, the volute tongue component of the upper fan structure is controlled to block between the corresponding fan component and the lower air outlet, and the volute tongue component of the lower fan structure is controlled to block between the corresponding fan component and the upper air outlet.

[0028] Furthermore, the method for controlling the rotation of the volute tongue components of each fan structure also includes: when the indoor ambient temperature T 内环 When the indoor temperature is less than or equal to the predetermined temperature T, or when the indoor ambient temperature T 内环 With the preset temperature T 设定 When the difference between them is less than or equal to △T, the volute tongue component of the upper fan structure is controlled to block between the corresponding fan component and the lower air outlet, and the volute tongue component of the lower fan structure is controlled to block between the corresponding fan component and the lower air outlet.

[0029] By applying the technical solution of the present invention, the fan system of the present invention includes a plurality of fan structures, each of which includes a ventilation duct and a plurality of air outlets, and the plurality of air outlets are connected to the ventilation duct; the ventilation ducts of the plurality of fan structures are independent of each other. Moreover, each volute tongue component is rotatably arranged around the corresponding fan component to block between the fan component and at least one of the plurality of air outlets. In this way, by controlling the movement of each volute tongue component, the air outlet of the fan system can be realized, thereby realizing the air outlet control in different directions of the fan system. Moreover, the corresponding air outlet can be selected to discharge air according to the needs of cooling and heating, that is, the appropriate air outlet mode can be selected, thereby solving the comfort problem of "hot head and cold feet" when heating and "cold wind blowing people" when cooling in the air conditioner in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0031] Figure 1 A schematic structural diagram of an embodiment of a fan system according to the present invention is shown;

[0032] Figure 2 Shows Figure 1 An exploded view of the fan system from the first perspective;

[0033] Figure 3 Shows Figure 1 An exploded view of the fan system from a second perspective;

[0034] Figure 4 Shows Figure 1 The structural diagram of the fan system in the figure is in the upward air outlet state;

[0035] Figure 5 Shows Figure 1 The structural diagram of the fan system in the figure is in the downward air outlet state;

[0036] Figure 6 Shows a side view of an embodiment of an air conditioner according to the present invention;

[0037] Figure 7 A first front view of an embodiment of an air conditioner according to the present invention is shown;

[0038] Figure 8 Shows Figure 7 AA cross-sectional view of the air conditioner in FIG.

[0039] Fig. 9 A second front view of an embodiment of an air conditioner according to the present invention is shown;

[0040] Fig.10 Shows Fig. 9 BB cross-sectional view of the air conditioner in FIG.

[0041] Fig.11 A flow chart showing the air outlet control method according to the present invention is shown; and

[0042] Fig.12 The working flow chart of the air conditioner of the present invention is shown.

[0043] The above drawings include the following reference numerals:

[0044] 1. Fan system; 11. Ventilation duct; 111. First duct section; 112. Second duct section; 113. Fan installation cavity; 12. Air outlet; 13. Fan components; 14. Volute tongue components; 15. Drive assembly; 20. Volute assembly; 21. First air outlet area; 22. Second air outlet area; 23. Volute cover; 231. Air inlet opening; 24. Volute body; 241. Connecting opening; 242. Wind guide slope; 25. Wind shield; 30. Casing; 40. Heat exchanger; 50. Air inlet grille. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] The present invention provides a fan system, please refer to Figures 1 to 10 The fan system includes: multiple fan structures, each fan structure includes a ventilation duct 11 and multiple air outlets 12, and the multiple air outlets 12 are connected to the ventilation duct 11; the ventilation ducts 11 of the multiple fan structures are independent of each other; wherein each fan structure includes a fan component 13 and a volute tongue component 14 arranged in the ventilation duct 11, and the volute tongue component 14 is rotatably arranged around the corresponding fan component 13 to block between the fan component 13 and at least one air outlet 12 of the multiple air outlets 12.

[0047] The fan system of the present invention includes a plurality of fan structures, each of which includes a ventilation duct 11 and a plurality of air outlets 12, and the plurality of air outlets 12 are connected to the ventilation duct 11; the ventilation ducts 11 of the plurality of fan structures are independent of each other. In addition, each volute tongue component 14 is rotatably arranged around the corresponding fan component 13 to block between the fan component 13 and at least one of the plurality of air outlets 12. In this way, by controlling the movement of each volute tongue component 14, the air outlet of different air outlets 12 of the fan system can be realized, thereby realizing the air outlet control of the fan system in different directions. In addition, the corresponding air outlet 12 can be selected to discharge air according to the needs of cooling and heating, that is, the appropriate air outlet mode can be selected, thereby solving the comfort problem of "hot head and cold feet" when heating and "cold wind blowing people" when cooling in the air conditioner in the prior art.

[0048] Preferably, the fan structure further comprises a driving assembly 15 , which is drivingly connected to the volute tongue component 14 to drive the volute tongue component 14 to move.

[0049] In order to ensure the integrity of the entire fan system, Figures 1 to 3As shown, the fan system further includes: a volute assembly 20, the volute assembly 20 has a first air outlet area 21 and a second air outlet area 22, wherein the plurality of air outlets 12 of each fan structure are respectively arranged in the first air outlet area 21 and the second air outlet area 22.

[0050] Preferably, the first air outlet area 21 is located above the second air outlet area 22, that is, the first air outlet area 21 is an upper air outlet area, and the second air outlet area 22 is a lower air outlet area. At this time, the air outlet 12 in the first air outlet area is an upper air outlet, and the air outlet 12 in the second air outlet area is a lower air outlet.

[0051] In order to facilitate the ventilation duct 11 to communicate with the air outlets 12 at the first air outlet area 21 and the second air outlet area 22, as shown in FIG. Figure 4 and Figure 5 As shown, each ventilation duct 11 includes a first duct section 111 extending to the first air outlet area 21, a second duct section 112 extending to the second air outlet area 22, and a fan installation cavity 113. The first duct section 111 and the second duct section 112 are both connected to the fan installation cavity 113, and the fan component 13 and the volute tongue component 14 are both installed in the fan installation cavity 113. In this way, the airflow in the fan installation cavity 113 can be easily made to flow into each air outlet 12.

[0052] In order to ensure the structural compactness of the entire fan system, the first air duct sections 111 of multiple fan structures are arranged along the thickness direction of the volute assembly 20; and / or the second air duct sections 112 of multiple fan structures are arranged along the thickness direction of the volute assembly 20; and / or the first air duct sections 111 and the second air duct sections 112 of each fan structure are staggered along the width direction of the volute assembly 20.

[0053] At this time, the volute component 20 is a rectangular structure, that is, there are thickness direction, length direction and width direction. In this embodiment, the volute component 20 is vertically arranged, its length direction is its length extending in the vertical direction, and the width direction and thickness direction are both arranged in the horizontal direction.

[0054] In this embodiment, if Figures 1 to 3 As shown, the volute assembly 20 includes: a volute cover 23, a volute body 24 and a wind shield 25, wherein the volute body 24 is arranged between the volute cover 23 and the wind shield 25; wherein the volute cover 23 and the volute body 24 form a fan installation cavity 113 of each fan structure; in the same fan structure, one of the first air duct segment 111 and the second air duct segment 112 is arranged between the volute cover 23 and the volute body 24, and the other of the first air duct segment 111 and the second air duct segment 112 is arranged between the volute body 24 and the wind shield 25.

[0055] At this time, the length direction of the volute assembly 20 is the length direction of the volute cover 23, the volute body 24 and the wind shield plate 25, the width direction of the volute assembly 20 is the width direction of the volute cover 23, the volute body 24 and the wind shield plate 25, and the thickness direction of the volute assembly 20 is the distribution direction of the volute cover 23, the volute body 24 and the wind shield plate 25.

[0056] Since the first air duct section 111 and the second air duct section 112 of each ventilation air duct 11 are respectively located on opposite sides of the volute body 24, as shown in FIG. Figure 3 As shown, the volute body 24 is provided with a communication opening 241 for connecting the fan installation cavity 113 and the first air duct section 111 or the second air duct section 112; there are multiple communication openings 241, each of which is connected to the corresponding fan installation cavity 113; wherein the multiple communication openings 241 are arranged at intervals along the width direction of the volute body 24. By arranging the multiple communication openings 241 along the width direction of the volute body 24, the multiple air ducts can be arranged in a staggered manner, thereby making the structure of the entire fan system more compact.

[0057] In this embodiment, a recessed portion for forming the first air duct segment 111 and / or the second air duct segment 112 is provided on the wind shield 25; and / or an air inlet opening 231 for communicating with the fan mounting cavity 113 is provided on the volute cover 23; and / or a connecting opening 241 for connecting the fan mounting cavity 113 and the first air duct segment 111 or the second air duct segment 112 is provided on the volute body 24, and the inner wall surface of the connecting opening 241 has an air guiding slope 242, and the air guiding slope 242 is inclined to the distribution direction of the volute body 24 and the wind shield 25.

[0058] Specifically, Figures 1 to 5 As shown, there are two fan structures, each of which has two air outlets 12, and the two air outlets 12 are arranged in the vertical direction; and / or each ventilation duct 11 includes multiple duct sections, and the multiple duct sections are arranged in a one-to-one correspondence with the multiple air outlets 12, and the air flow directions of the multiple duct sections are arranged crosswise; the volute tongue component 14 of each fan structure is arranged between the fan component 13 and the multiple duct sections; and / or the fan components 13 of the multiple fan structures are arranged at intervals along the extension direction of the fan system. Preferably, the fan components 13 of the multiple fan structures are arranged at intervals along the vertical direction.

[0059] The present invention also provides an air conditioner, such as Figures 6 to 10 As shown, it includes a casing 30 and a fan system 1 arranged in the casing 30, and the fan system 1 is the above-mentioned fan system.

[0060] In this embodiment, the multiple air outlets 12 of each fan structure of the fan system 1 are divided into upper air outlets and lower air outlets, and the ventilation duct 11 of each fan structure includes an upper air duct section for communicating with the upper air outlet and a lower air duct section for communicating with the lower air outlet. The air conditioner includes: an upper air outlet mode, a volute tongue component 14 of each fan structure is blocked between a fan component 13 of the fan structure and a corresponding lower air duct section, so that the fan component 13 is connected to the upper air outlet; a lower air outlet mode, a volute tongue component 14 of each fan structure is blocked between a fan component 13 of the fan structure and a corresponding upper air duct section, so that the fan component 13 is connected to the lower air outlet; an upper and lower combined air outlet mode, the multiple fan structures of the fan system 1 include an upper fan structure and a lower fan structure, the volute tongue component 14 of the upper fan structure is blocked between the corresponding fan component 13 and the lower air duct section, and the volute tongue component 14 of the lower fan structure is blocked between the corresponding fan component 13 and the upper air duct section.

[0061] in, Figure 7 and Figure 8 Schematic diagram showing the wind direction of the first wind outlet area 21. Fig. 9 and Fig.10 A schematic diagram of the wind direction of the air outlet at the second air outlet area 22 is shown.

[0062] In this embodiment, the air conditioner further comprises: an indoor temperature detection device, which is used to detect the indoor ambient temperature to control the rotation of the volute tongue components 14 of each fan structure according to the indoor ambient temperature. Preferably, the indoor temperature detection device is arranged on the indoor unit of the air conditioner.

[0063] The air conditioner in the present invention mainly includes a casing, an air inlet at the back of the casing, and two air outlets at the upper and lower parts of the casing respectively. A heat exchanger 40, a dual centrifugal fan and an air outlet passage are arranged in the casing. The air flow is sucked into the body through the air inlet at the back of the casing, heat is exchanged through the heat exchanger 40, and then enters the air outlet passage after being pressurized by the dual centrifugal fans, and then is sent out from the upper and lower air outlets of the casing, thereby realizing air circulation.

[0064] like Figure 8 As shown, an air inlet grille 50 is provided on the housing 30 .

[0065] The present invention also provides an air outlet control method, which is applicable to the above-mentioned fan system, such as Fig.11 and Fig.12 As shown, the air outlet control method includes: detecting the indoor ambient temperature Tinner loop; controlling the rotation of the volute tongue component 14 of each fan structure according to the indoor ambient temperature Tinner loop to select the corresponding air outlet 12 for air outlet.

[0066] The air outlet control method in this embodiment is convenient for users to make personalized choices. The air outlet mode of the dual centrifugal fans is controlled by detecting the operating mode of the air conditioner and combining the air outlet mode and temperature conditions set by the user.

[0067] In this embodiment, the multiple fan structures of the fan system 1 include an upper fan structure and a lower fan structure, and the multiple air outlets 12 of each fan structure of the fan system 1 are divided into an upper air outlet and a lower air outlet. The method for controlling the rotation of the volute tongue component 14 of each fan structure includes: when the indoor ambient temperature T 内环 When the indoor temperature is greater than the preset temperature T, or when the indoor ambient temperature T 内环 With the preset temperature T 设定 When the difference between them is greater than △T, the volute tongue component 14 of the upper fan structure is controlled to block between the corresponding fan component 13 and the lower air outlet, and the volute tongue component 14 of the lower fan structure is controlled to block between the corresponding fan component 13 and the upper air outlet.

[0068] In this embodiment, the method for controlling the rotation of the volute tongue component 14 of each fan structure also includes: when the indoor ambient temperature Tinner ring is less than or equal to the predetermined temperature T, or when the difference between the indoor ambient temperature Tinner ring and the preset temperature Tsetting is less than or equal to △T, controlling the volute tongue component 14 of the upper fan structure to block between the corresponding fan component 13 and the lower air outlet, and controlling the volute tongue component 14 of the lower fan structure to block between the corresponding fan component 13 and the lower air outlet.

[0069] The fan system in the present invention is a dual centrifugal fan system, which consists of two independent centrifugal fan subsystems. Each independent centrifugal fan subsystem has two air outlets, and only one air outlet can be used to discharge air during operation. The air outlet is selected by a motion mechanism rotating along the volute. The dual centrifugal fan system has multiple air supply modes:

[0070] Upward air flow mode - such as Figure 4 As shown, the upper and lower fans rotate through the motion mechanism to close the downward air outlet, and both fan components supply air upward to achieve upward air outlet;

[0071] Downward air flow mode - such as Figure 5 As shown, the upper and lower fans rotate through the motion mechanism to close the upward air outlet, and both fan components supply air downward;

[0072] Upper and lower combined air outlet mode: the upper fan rotates through the motion mechanism, closes the downward air outlet, and supplies air upward; the lower fan rotates through the motion mechanism, closes the upward air outlet, and supplies air downward at the same time.

[0073] It can be seen that Fig.12 As shown, the technical solution of this embodiment solves the problem of insufficient air outlet capacity of single upper and single lower:

[0074] When cooling, the air conditioner only needs to open the upper air vent to discharge air, which can meet the cooling demand. The cold wind does not blow on people, making it more comfortable.

[0075] When heating, the air conditioner only needs to open the lower air outlet to meet the heating demand, and the warm air is directly sent to the human activity area, which is more comfortable;

[0076] The dual centrifugal fan solution has a small blade diameter, which reduces the size of the air conditioner and makes it more refined and beautiful.

[0077] like Figures 1 to 5 As shown, the fan system in this embodiment is a dual centrifugal fan system, which is composed of two independent centrifugal fan subsystems. Each independent centrifugal fan subsystem has two air outlets, and only one air outlet can be used to discharge air during operation. The air outlet is selected by a motion mechanism rotating along the volute. The dual centrifugal fan system has multiple air supply modes.

[0078] like Fig.12 As shown, the air conditioner in this embodiment has two working modes:

[0079] 1. Cooling mode

[0080] (1) In cooling mode, set the upper air outlet mode, then the upper and lower fan mechanisms (fan components) rotate to the lower air outlet position, and the upper air outlet is turned on;

[0081] (2) In cooling mode, set the lower air outlet mode, then the upper and lower fan mechanisms rotate to the upper air outlet position, and the lower air outlet is turned on;

[0082] (3) When the air outlet mode is not set, the current indoor ambient temperature and the difference between the indoor ambient temperature and the air conditioner set temperature are detected in real time. If any of the indoor ambient temperature or the difference between the indoor ambient temperature and the air conditioner set temperature is greater than a preset threshold, the upper and lower fan mechanisms rotate to the lower air outlet position and the upper air outlet is turned on.

[0083] 2. Heating mode

[0084] (1) When the down-flow mode is set, the upper and lower fan mechanisms rotate to the upper air outlet position and the down-flow is turned on;

[0085] (2) When the upper air outlet mode is set, the upper and lower fan mechanisms rotate to the lower air outlet position and the upper air outlet is turned on;

[0086] (3) When the air outlet mode is not set, the upper and lower fan mechanisms rotate to the upper air outlet position and the lower air outlet is turned on.

[0087] An air conditioner is proposed, which mainly includes a casing, an air inlet at the back of the casing, and two air outlets at the upper and lower parts of the casing respectively. A heat exchanger, a dual centrifugal fan and an air outlet passage are arranged in the casing. The air flow is sucked into the body through the air inlet at the back of the casing, heat is exchanged by the heat exchanger, and then enters the air outlet passage after being pressurized by the dual centrifugal fans, and then is sent out from the upper and lower air outlets of the casing to realize air circulation.

[0088] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0089] The fan system in this embodiment fundamentally solves the comfort problem of "hot head and cold feet" when the air conditioner is heating, and "cold wind blowing on people" when cooling:

[0090] 1. When cooling, the air conditioner only opens the upper air outlet to discharge air, which can meet the maximum cooling load demand. The cold wind does not blow on people, and the cool wind settles naturally, which is more comfortable;

[0091] 2. When heating, the air conditioner only opens the lower air outlet to meet the maximum heating load demand. The warm air is directly sent to the human activity area, and the warm air naturally floats up, which is more comfortable;

[0092] 3. The improvement of air duct technology reduces the size of the fan blades, making the air conditioner more refined and beautiful;

[0093] 4. The double centrifugal air duct has an efficient layout, less noise and less air loss.

[0094] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fan system, characterized in that: include: A plurality of fan structures, each of the fan structures comprising a ventilation duct (11) and a plurality of air outlets (12), the plurality of air outlets (12) being connected to the ventilation duct (11); the ventilation ducts (11) of the plurality of fan structures being independent of each other; Each of the fan structures comprises a fan component (13) and a volute tongue component (14) arranged in the ventilation duct (11); each of the volute tongue components (14) is rotatably arranged around the corresponding fan component (13) to block between the fan component (13) and at least one of the plurality of air outlets (12); The fan system also includes: A volute assembly (20), the volute assembly (20) having a first air outlet area (21) and a second air outlet area (22), wherein the plurality of air outlets (12) of each of the fan structures are respectively arranged in the first air outlet area (21) and the second air outlet area (22); Wherein, each of the ventilation ducts (11) comprises a first duct section (111) extending to the first air outlet area (21), a second duct section (112) extending to the second air outlet area (22), and a fan installation cavity (113); the first duct section (111) and the second duct section (112) are both connected to the fan installation cavity (113); and the fan component (13) and the volute tongue component (14) are both installed in the fan installation cavity (113); The volute assembly (20) comprises: A volute cover (23), a volute body (24) and a windshield (25), wherein the volute body (24) is arranged between the volute cover (23) and the windshield (25); The volute cover (23) and the volute body (24) enclose a fan installation cavity (113) of each fan structure; in the same fan structure, one of the first air duct segment (111) and the second air duct segment (112) is arranged between the volute cover (23) and the volute body (24), and the other of the first air duct segment (111) and the second air duct segment (112) is arranged between the volute body (24) and the wind shield (25); The volute body (24) is provided with a connecting opening (241) for connecting the fan installation cavity (113) and the first air duct section (111) or the second air duct section (112); the inner wall surface of the connecting opening (241) has an air guiding inclined surface (242); and the air guiding inclined surface (242) is inclined to the distribution direction of the volute body (24) and the wind shield plate (25).

2. The fan system according to claim 1, characterized in that: The first air duct sections (111) of the plurality of fan structures are arranged along the thickness direction of the volute assembly (20); and / or The second air duct sections (112) of the plurality of fan structures are arranged along the thickness direction of the volute assembly (20); and / or The first air duct section (111) and the second air duct section (112) of each of the fan structures are arranged in a staggered manner along the width direction of the volute assembly (20).

3. The fan system according to claim 1, characterized in that: The volute main body (24) is provided with a connecting opening (241) for connecting the fan installation cavity (113) and the first air duct section (111) or the second air duct section (112); there are a plurality of connecting openings (241), each of which is connected to a corresponding fan installation cavity (113); wherein the plurality of connecting openings (241) are arranged at intervals along the width direction of the volute main body (24).

4. The fan system according to claim 1, characterized in that: The wind shield (25) is provided with a recessed portion for forming the first air duct section (111) and / or the second air duct section (112); and / or The volute cover (23) is provided with an air inlet opening (231) for communicating with the fan installation cavity (113).

5. The fan system according to any one of claims 1 to 4, characterized in that: There are two fan structures, each of which has two air outlets (12), and the two air outlets (12) are arranged in a vertical direction; and / or Each of the ventilation ducts (11) comprises a plurality of duct sections, the plurality of duct sections are arranged in one-to-one correspondence with the plurality of air outlets (12), and the airflow directions of the plurality of duct sections are arranged crosswise; the volute tongue component (14) of each of the fan structures is arranged between the fan component (13) and the plurality of duct sections; and / or The fan components (13) of the plurality of fan structures are arranged at intervals along the extension direction of the fan system.

6. An air conditioner, comprising a casing (30) and a fan system (1) arranged in the casing (30), characterized in that: The fan system (1) is the fan system according to any one of claims 1 to 5.

7. The air conditioner according to claim 6, characterized in that: The plurality of air outlets (12) of each fan structure of the fan system (1) are divided into upper air outlets and lower air outlets, and the ventilation duct (11) of each fan structure comprises an upper duct section for communicating with the upper air outlet and a lower duct section for communicating with the lower air outlet. The air conditioner comprises: In the upper air outlet mode, the volute tongue component (14) of each of the fan structures is blocked between the fan component (13) of the fan structure and the corresponding lower air duct section, so that the fan component (13) is connected to the upper air outlet; In the lower air outlet mode, the volute tongue component (14) of each of the fan structures is blocked between the fan component (13) of the fan structure and the corresponding upper air duct section, so that the fan component (13) is connected to the lower air outlet; In an upper and lower combined air outlet mode, the plurality of fan structures of the fan system (1) include an upper fan structure and a lower fan structure, the volute tongue component (14) of the upper fan structure is blocked between the corresponding fan component (13) and the lower air duct section, and the volute tongue component (14) of the lower fan structure is blocked between the corresponding fan component (13) and the upper air duct section.

8. The air conditioner according to claim 6, characterized in that: The air conditioner also includes: An indoor temperature detection device is provided, wherein the indoor temperature detection device is used to detect the indoor ambient temperature so as to control the rotation of the volute tongue components (14) of each of the fan structures according to the indoor ambient temperature.

9. An air outlet control method, applicable to the fan system according to any one of claims 1 to 5, characterized in that: The air outlet control method comprises: Detect indoor ambient temperature T 内环 ; According to the indoor ambient temperature T 内环 The volute tongue component (14) of each fan structure is controlled to rotate so as to select the corresponding air outlet (12) to discharge air.

10. The air outlet control method according to claim 9, characterized in that: The plurality of fan structures of the fan system include an upper fan structure and a lower fan structure, the plurality of air outlets (12) of each fan structure of the fan system are divided into an upper air outlet and a lower air outlet, and the method for controlling the rotation of the volute tongue component (14) of each fan structure includes: When the indoor ambient temperature T 内环 When the indoor temperature is greater than the predetermined temperature T, or when the indoor environment temperature T 内环 With the preset temperature T 设定 When the difference between them is greater than ΔT, the volute tongue component (14) of the upper fan structure is controlled to block between the corresponding fan component (13) and the lower air outlet, and the volute tongue component (14) of the lower fan structure is controlled to block between the corresponding fan component (13) and the upper air outlet.

11. The air outlet control method according to claim 10, characterized in that: The method for controlling the rotation of the volute tongue component (14) of each of the fan structures also includes: When the indoor ambient temperature T 内环 When the indoor environment temperature T is less than or equal to the predetermined temperature T, or when the indoor environment temperature T 内环 With the preset temperature T 设定 When the difference between them is less than or equal to ΔT, the volute tongue component (14) of the upper fan structure is controlled to block between the corresponding fan component (13) and the lower air outlet, and the volute tongue component (14) of the lower fan structure is controlled to block between the corresponding fan component (13) and the lower air outlet.

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