Air conditioner

Abstract

The utility model discloses an air conditioner. The air conditioner comprises a first sub-device and a second sub-device, an electric control box used for conducting sealing protection on an electric control device is arranged on a first shell of the first sub-device, and a second shell of the second sub-device is provided with an exhaust pipeline used for guiding airflow to the outside; the air conditioner further comprises a heat dissipation channel assembly and a wind wheel. The heat dissipation channel assembly is arranged between the first shell and the second shell and forms a heat dissipation channel. The wind wheel is arranged at the communication position of the heat dissipation channel and the exhaust pipeline and used for driving the heat dissipation channel to conduct air cooling heat dissipation under the action of airflow in the exhaust pipeline. Thus, the wind wheel can be driven to rotate under the action of the high-speed airflow generated by the second fan of the second sub-equipment, then air cooling heat dissipation of the heat dissipation channel is achieved based on the structure of the wind wheel, the heat dissipation effect of an electric control device in the air conditioner is effectively improved, and the hardware cost and the maintenance cost of the electric control device are reduced.

Description

Technical Field

[0001] The present application relates to the field of air conditioning, and in particular to an air conditioner. Background Art

[0002] As people's quality of life improves, the application of air conditioners is becoming more and more common. In the related art, there are application scenarios that require the air conditioner's electric control box to be sealed, which brings challenges to the heat dissipation design of the electric control box. For example, in order to improve the cooking experience of users in the high temperature environment of the kitchen, kitchen air conditioners came into being. Kitchen air conditioners are air conditioners specifically used in kitchen scenarios. Considering that there may be a lot of oil smoke and water vapor in the kitchen, in order to prevent the relevant electronic control components from being corroded by oil smoke and water vapor, it is often necessary to fully seal the air conditioner's electric control components through the shell to form an electric control box. Although it can avoid the influence of external oil smoke and water vapor on the operation of the electronic control components, it is not conducive to the heat dissipation of the electronic control components. In addition, in order to improve safety, the refrigerant used in kitchen air conditioners is often carbon dioxide (CO2) refrigerant, but when the compressor is working, the pressure is higher than that of the traditional compressor, and the electric power of the matching electronic control components should be increased accordingly. The increase in electric power and in a closed electric control environment bring challenges to the heat dissipation design of the electronic control components. Utility Model Content

[0003] In view of this, an embodiment of the present application provides an air conditioner, which aims to improve the heat dissipation effect of electronic control components in the air conditioner and improve the reliability of the operation of the air conditioner.

[0004] The technical solution of the embodiment of the present application is implemented as follows:

[0005] The embodiment of the present application provides an air conditioner, comprising:

[0006] A first sub-device and a second sub-device, wherein the first sub-device comprises a first housing, a first heat exchanger and a first fan arranged on the first housing, wherein the first fan is used to guide the airflow to enter the room after heat exchange with the first heat exchanger; the second sub-device comprises a second housing, a second heat exchanger and a second fan arranged on the second housing, wherein the second fan is used to guide the airflow to be discharged outdoors after heat exchange with the second heat exchanger; wherein an electric control box for sealing and protecting the electric control device is arranged on the first housing, and the second housing has an exhaust duct for guiding the airflow to the outdoors;

[0007] a heat dissipation channel assembly, disposed between the first shell and the second shell to form a heat dissipation channel, the heat dissipation channel being disposed toward a first side of the first shell and corresponding to the electric control box, and a second side of the heat dissipation channel being connected to the exhaust duct;

[0008] The wind wheel is arranged at the connection point between the heat dissipation channel and the exhaust duct, and is used for driving the heat dissipation channel to perform air cooling and heat dissipation under the action of the airflow in the exhaust duct.

[0009] In some embodiments, the heat dissipation channel assembly is detachably connected to the first shell and / or the second shell.

[0010] In some embodiments, a through hole is provided on the side wall of the exhaust duct, and the end of the second side of the heat dissipation channel is connected to the through hole and is sealed to the through hole.

[0011] In some embodiments, the heat dissipation channel assembly forms one or more air inlets on the first side.

[0012] In some embodiments, the electric control box includes a first cavity area for accommodating a first type of electric control device and a second cavity area for accommodating a second type of electric control device, wherein the height of the first type of electric control device is smaller than the height of the second type of electric control device, the height of the first cavity area is smaller than the height of the second cavity area, and a first heat sink is disposed at a position of the top plate of the electric control box corresponding to the first cavity area, and a second heat sink is disposed at a position corresponding to the second cavity area;

[0013] The heat dissipation channel assembly forms a plurality of air inlets on the first side, and the plurality of air inlets include a first air inlet for supplying air to flow through the first heat sink and a second air inlet for supplying air to flow through the second heat sink.

[0014] In some embodiments, the first shell and the second shell are spaced apart and fixedly connected.

[0015] In some embodiments, the air conditioner further comprises:

[0016] The temperature sensor is used to generate a temperature detection value indicating the temperature at the electric control box.

[0017] In some embodiments, the heat dissipation channel assembly includes a first inlet channel enclosing the first radiator and a second inlet channel enclosing the second radiator, the inlet side of the first inlet channel forming the first air inlet, and the inlet side of the second inlet channel forming the second air inlet.

[0018] In some embodiments, the electric control box includes an outer shell and an inner shell, a PCB board is arranged in the inner shell, the first type of electric control device is arranged on the PCB board corresponding to the first cavity area, and the second type of electric control device is arranged on the PCB board corresponding to the second cavity area.

[0019] In some embodiments, the inner shell is made of plastic material, and the outer shell is made of metal heat conductor.

[0020] The technical solution provided by the embodiment of the present application is that the air conditioner includes a first sub-device and a second sub-device, an electric control box for sealing and protecting the electric control device is arranged on the first shell of the first sub-device, and the second shell of the second sub-device has an exhaust duct for guiding the airflow to the outside; the air conditioner also includes a heat dissipation channel component and a wind wheel, the heat dissipation channel component is arranged between the first shell and the second shell and forms a heat dissipation channel, the heat dissipation channel is arranged corresponding to the electric control box toward the first side of the first shell, and the second side of the heat dissipation channel is connected to the exhaust duct; the wind wheel is arranged at the connection between the heat dissipation channel and the exhaust duct, and is used to drive the heat dissipation channel to perform air cooling and heat dissipation under the action of the airflow in the exhaust duct. In this way, the wind wheel can be driven to rotate under the action of the high-speed airflow generated by the second fan of the second sub-device, and then the air cooling and heat dissipation of the heat dissipation channel can be achieved based on the structure of the wind wheel, effectively improving the heat dissipation effect of the electric control device in the air conditioner, and reducing the hardware cost and maintenance cost of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the air conditioner according to the embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the structure of the electric control box of the embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the air flow principle of the heat dissipation channel during the operation of the air conditioner according to the embodiment of the present application;

[0024] Figure 4 A flow chart of a method for controlling an air conditioner according to an embodiment of the present application;

[0025] Figure 5 A flowchart of a method for controlling an air conditioner in an application example of the present application;

[0026] Figure 6 A flowchart of a method for controlling an air conditioner in another application example of the present application;

[0027] Figure 7 This is another structural schematic diagram of the air conditioner according to the embodiment of the present application.

[0028] Description of reference numerals:

[0029] 1. First shell; 2. Second shell;

[0030] 3. Electric control box; 31. Outer shell; 32. Inner shell; 321. Heat dissipation opening; 33. First cavity area;

[0031] 34. Second cavity area; 4. Exhaust duct; 41. Through hole;

[0032] 5. heat dissipation channel assembly; 51. first air inlet; 52. second air inlet;

[0033] 6. Wind wheel; 7. First radiator; 8. Second radiator;

[0034] 9. PCB board; 91. First-class electronic control device; 92. Second-class electronic control device;

[0035] 10. hollow structure; 700. air conditioner; 701. processor; 702. memory;

[0036] 703. User interface; 704. Bus system. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0039] In the related art, air conditioners (for example, kitchen air conditioners) use an electric control box structure that seals and protects the electric control components, and the air conditioner uses CO2 refrigerant as a refrigerant, which makes the compressor work under a relatively high pressure, and the electric power of the matching electric control components increases accordingly. Combined with the closed structure of the electric control box, this brings challenges to the heat dissipation design of the electric control components. Traditional solutions generally add a separate heat dissipation fan, and use the air volume generated by the heat dissipation fan to cool the surface of the electric control box, thereby reducing the heat accumulation of the electric control components inside the electric control box. However, the addition of the heat dissipation fan brings about cost and service life issues, that is, increases hardware cost and maintenance cost; in addition, the cold air from the main air duct of the indoor unit can also be introduced for heat dissipation, but this will make the overall structural design complicated and at the same time reduce the energy efficiency of the entire air conditioner.

[0040] Based on this, the embodiment of the present application provides an air conditioner, such as Figure 1As shown, the air conditioner includes: a first sub-device, a second sub-device, a heat dissipation channel assembly 5 and a wind wheel 6. The first sub-device includes a first housing 1 and a first heat exchanger and a first fan arranged on the first housing 1. The first fan is used to guide the airflow to enter the room after heat exchange with the first heat exchanger. The second sub-device includes a second housing 2 and a second heat exchanger and a second fan arranged on the second housing 2. The second fan is used to guide the airflow to be discharged to the outside after heat exchange with the second heat exchanger. An electric control box 3 for sealing and protecting the electric control device is arranged on the first housing 1, and the second housing 2 has an exhaust duct 4 for guiding the airflow to the outside.

[0041] It should be noted that the first heat exchanger can be understood as an indoor heat exchanger, the first fan is the indoor fan, and the second heat exchanger can be understood as an outdoor heat exchanger, and the second fan is the outdoor fan. Among them, the first heat exchanger and the second heat exchanger are connected to the compressor through a refrigerant pipeline, so that the refrigerant in the refrigerant pipeline is used as a medium for transferring heat for heat conduction. Taking the operation of the air conditioner in the cooling mode as an example, the compressor compresses the gaseous refrigerant into a high-temperature and high-pressure liquid refrigerant, and then sends it to the second heat exchanger (equivalent to the condenser) for heat dissipation, thereby forming a medium-temperature and medium-pressure liquid refrigerant; the liquid refrigerant formed at the second heat exchanger enters the first heat exchanger (equivalent to the evaporator) through the refrigerant pipeline. Due to the sudden increase in space and the decrease in pressure, the liquid refrigerant is vaporized, and a large amount of heat is absorbed in the process of converting from liquid to gas. At this time, the first heat exchanger will become cold. When the first fan blows the indoor air through the first heat exchanger, the cold air blown out by the first fan is cold air. It is understandable that in order to speed up the heat dissipation efficiency of the refrigerant at the second heat exchanger, the second fan can drive the airflow after absorbing heat to be discharged from the exhaust duct 4 at an accelerated speed.

[0042] In the embodiment of the present application, a heat dissipation channel assembly 5 and a wind wheel 6 are introduced. The heat dissipation channel assembly 5 is arranged between the first housing 1 and the second housing 2 and forms a heat dissipation channel. The heat dissipation channel is arranged corresponding to the electric control box 3 toward the first side of the first housing 1, and the second side of the heat dissipation channel is connected to the exhaust duct 4. It should be noted that the wind wheel 6 can be a passive wind wheel structure, that is, a wind wheel without a motor, which is arranged at the connection between the heat dissipation channel and the exhaust duct 4, and is used to drive the heat dissipation channel to perform air cooling and heat dissipation under the action of the airflow in the exhaust duct 4.

[0043] It is understandable that when the second fan is running, the exhaust duct 4 will generate an airflow ejected outward, and the ejected airflow will drive the wind wheel 6 to rotate, thereby generating a negative pressure in the heat dissipation channel, and the negative pressure can drive the airflow in the heat dissipation channel to flow, thereby achieving air cooling and heat dissipation of the electric control box 3. In this way, the wind wheel 6 can be driven to rotate under the action of the high-speed airflow generated by the second fan of the second sub-device, and then the air cooling and heat dissipation of the heat dissipation channel can be achieved based on the structure of the wind wheel 6, that is, the airflow flowing in the heat dissipation channel exchanges heat with the electric control box 3 and is discharged through the exhaust duct 4, which can take away the heat generated by the electric control components in the electric control box 3, and effectively improve the heat dissipation effect of the electric control components in the air conditioner; in addition, since there is no need to add a separate heat dissipation fan, the hardware cost and maintenance cost of the air conditioner can be reduced.

[0044] It should be pointed out that if the wind wheel 6 is omitted at the connection point between the heat dissipation channel and the exhaust duct 4, the jet airflow generated by the second fan will form a vortex here, which will block the air flow in the heat dissipation channel, resulting in a significant reduction in the air cooling effect.

[0045] In some embodiments, the air conditioner can be an integrated kitchen air conditioner, that is, the first housing 1 is fixedly connected to the second housing 2. In this way, there is no need to install an additional outdoor unit during installation, which can save installation space and cost. For example, in order to facilitate the installation of the air conditioner, the first housing 1 and the second housing 2 are spaced apart and fixedly connected, for example, Figure 1 As shown, the first shell 1 and the second shell 2 are arranged in parallel and spaced apart, and are fixedly connected by a connecting plate, so that a hollow structure 10 is formed between the first shell 1 and the second shell 2, which is convenient for embedding the keel of the kitchen ceiling. In this way, during the installation of the air conditioner, there is no need to remove the keel of the kitchen ceiling, which simplifies the installation operation.

[0046] In some embodiments, the heat dissipation channel assembly 5 is detachably connected to the first shell 1 and / or the second shell 2. It should be noted that designing the heat dissipation channel assembly 5 as a detachable connection method can further simplify the installation operation of the air conditioner. For example, during the installation process, the air conditioner without the heat dissipation channel assembly 5 installed can be first embedded in the keel of the kitchen ceiling, and then the heat dissipation channel assembly 5 can be installed and fixed to the first shell 1 and / or the second shell 2. Here, the detachable connection method may include but is not limited to: snap connection, screw fixed connection, etc. Exemplarily, the heat dissipation channel assembly 5 can be connected to both the first shell 1 and the second shell 2, so that the fixation of the heat dissipation channel assembly 5 is more reliable.

[0047] In some embodiments, a through hole 41 is provided on the side wall of the exhaust duct 4 , and the end of the second side of the heat dissipation channel is connected to the through hole 41 and is sealed to the through hole 41 .

[0048] It should be noted that, since the airflow in the heat dissipation channel needs to be driven by the rotation of the wind wheel 6, in order to better realize the negative pressure effect under the rotation of the wind wheel 6, a sealing gasket or a labyrinth sealing structure can be provided at the connection between the end of the second side of the heat dissipation channel and the through hole 41, so that the two are sealed and connected. In this way, the wind wheel 6 rotates driven by the high-speed airflow in the exhaust duct 4, and generates negative pressure in the heat dissipation channel, thereby driving the air in the heat dissipation channel to flow faster.

[0049] Exemplarily, the heat dissipation channel assembly 5 forms one or more air inlets on the first side, so that air on the first shell 1 side can enter the heat dissipation channel through the one or more air inlets to achieve air cooling and heat dissipation of the electric control box 3.

[0050] It should be noted that the heights of the electric control components in the electric control box 3 are not uniform, some are flat components, and some are high components. Figure 1 and Figure 2 As shown, the electric control box 3 includes a first cavity area 33 for accommodating a first type of electric control device 91 and a second cavity area 34 for accommodating a second type of electric control device 92, wherein the height of the first type of electric control device 91 is smaller than the height of the second type of electric control device 92, the height of the first cavity area 33 is smaller than the height of the second cavity area 34, and a first radiator 7 is arranged on the top plate of the electric control box 3 at a position corresponding to the first cavity area 33, and a second radiator 8 is arranged at a position corresponding to the second cavity area 34; the heat dissipation channel assembly 5 forms a plurality of air inlets on the first side, and the plurality of air inlets include: a first air inlet 51 for supplying air to flow through the first radiator 7 and a second air inlet 52 for supplying air to flow through the second radiator 8.

[0051] Exemplarily, the first type of electronically controlled devices 91 include, but are not limited to: compressor IPM (Intelligent Power Module), fan IPM, IGBT (Insulated Gate Bipolar Transistor), fast recovery diode (FRD), bridge stack and other relatively small and short components. The first type of electronically controlled devices 91 can be packaged on a circuit board, or packaged separately and then electrically connected to a circuit board. The second type of electronically controlled devices 92 can include capacitive devices such as capacitors and / or inductive devices such as inductors, and the height of the second type of electronically controlled devices 92 is higher than that of the first type of electronically controlled devices 91.

[0052] In an application example, Figure 2As shown, the electric control box 3 includes an outer shell 31 and an inner shell 32. A PCB board 9 is arranged in the inner shell 32. A first cavity area 33 and a second cavity area 34 are formed in the inner shell 32. A first type of electric control device 91 is arranged on the PCB board 9 corresponding to the first cavity area 33, and a second type of electric control device 92 is arranged on the PCB board 9 corresponding to the second cavity area 34.

[0053] The top surface of the electric control box 3 is provided with a first heat sink 7 at a position corresponding to the first cavity area 33. The first heat sink 7 is at least partially provided in the first cavity area 33 and exchanges heat with the first type of electric control device 91. For example, the outer shell 31 has a first assembly hole, and the inner shell 32 has a second assembly hole corresponding to the first assembly hole. The bottom of the first heat sink 7 passes through the first assembly hole and the second assembly hole and contacts with at least one first type of electric control device 91, so that the heat generated by the first type of electric control device 91 can be quickly conducted to the outside of the electric control box 3, reducing the heat accumulation in the first cavity area 33. It should be noted that in order to ensure the sealing effect of the electric control box 3, a sealing ring can be provided at the first assembly hole and the second assembly hole.

[0054] The second heat sink 8 is arranged on the top surface of the electric control box 3 at a position corresponding to the second cavity area 34. The second heat sink 8 can be arranged on the outer shell 31, and the inner shell 32 has a heat dissipation opening 321 communicating with the second cavity area 34. Specifically, during operation, the second type of electric control components 92 on the PCB board 9 generate heat and accumulate in the second cavity area 34 of the electric control box 3. The heat is transferred to the outer shell 31 through the heat dissipation opening 321 provided in the inner shell 32, and then the heat inside the sealed electric control box 3 is conducted out based on the heat conduction property of the outer shell 31. In addition, the heat dissipation capacity is enhanced by the second heat sink 8 installed on the outer shell 31, and the heat accumulation inside the sealed electric control box 3 is further reduced.

[0055] Exemplarily, the inner shell 32 can be made of plastic material, for example, the inner shell 32 is an integral structure formed by injection molding, and the outer shell 31 has a heat-conducting function and can be a metal heat-conducting part (for example, an aluminum heat-conducting part). In this way, the heat accumulated inside the electric control box 3 can be directly transferred to the outer shell 31 made of the metal heat-conducting part through the heat dissipation vent 321, and the internal heat can be quickly conducted away by relying on the high thermal conductivity of the metal material.

[0056] Exemplarily, the heat dissipation channel assembly 5 of the embodiment of the present application may include a plurality of inlet channels, for example, Figure 1As shown, the heat dissipation channel assembly 5 includes a first inlet channel enclosing the first radiator 7 and a second inlet channel enclosing the second radiator 8, the inlet side of the first inlet channel forms the aforementioned first air inlet 51, the inlet side of the second inlet channel forms the aforementioned second air inlet 52, and the first inlet channel and the second inlet channel are both connected to the main channel, the end of the main channel is connected to the exhaust duct 4, and the wind wheel 6 is arranged at the connection.

[0057] like Figure 3 As shown in FIG. 1 , when the second fan rotates, the outward jet airflow generated by it is hot air and cannot be directly used for heat dissipation of the electronic control device. However, it will drive the fan wheel 6 to rotate, generate negative pressure, and then drive the air flow in the heat dissipation channel to take away the heat generated by the first radiator 7. At the same time, the heat generated by the second radiator 8 is also taken away. The flow of air is shown in FIG. Figure 3 As shown in the direction of the arrows, the first type of electronically controlled components 91 and the second type of electronically controlled components 92 in the electronic control box 3 can be cooled synchronously, thereby reducing the heat generated inside the electronic control box 3, achieving low-cost air cooling and reducing the maintenance cost of heat dissipation.

[0058] Illustratively, the present application also provides a method for controlling an air conditioner, such as Figure 4 As shown, the method includes:

[0059] Step 401, obtaining the working mode of the air conditioner and the detected temperature value indicating the temperature at the electric control box.

[0060] The air conditioner of the embodiment of the present application is the air conditioner of the aforementioned embodiment, and the air conditioner also includes a temperature sensor for detecting the temperature at the electric control box. For example, the temperature sensor can be arranged on the surface of the electric control box to detect the temperature of the surface of the electric control box, or be arranged inside the electric control box to detect the temperature inside the electric control box. The embodiment of the present application is not limited to this.

[0061] Step 402, based on the working mode and the detected temperature value, control the operating state of the air conditioner.

[0062] It should be noted that the working mode of the air conditioner can reflect the heat dissipation requirements of its electronic control components, and the detected temperature value can reflect the current heat accumulation state in the electronic control box. The embodiment of the present application controls the operating state of the air conditioner based on the working mode and the detected temperature value, and can take into account the heat dissipation requirements of the electronic control components and the current heat accumulation state in the electronic control box, control the air cooling of the air conditioner, and improve the energy efficiency of the air conditioner while effectively reducing heat accumulation.

[0063] Exemplarily, based on the working mode and the detected temperature value, controlling the operating state of the air conditioner includes:

[0064] If it is determined that the working mode is the cooling mode, then based on the detected temperature value and the first set threshold interval, the operating state of the second fan and / or the compressor of the air conditioner is controlled;

[0065] If it is determined that the operating mode is the air supply mode, the operating state of the second fan of the air conditioner is controlled based on the detected temperature value and the second set threshold value interval.

[0066] It should be noted that in cooling mode, the heat generated by the electronic control components of the air conditioner is relatively large, and the speed of the second fan can be controlled to improve the heat dissipation effect of the electronic control components and meet the energy efficiency requirements; in addition, the heat dissipation effect of the electronic control components can also be improved based on the frequency control of the compressor. In air supply mode, since the compressor is not started, the heat generated by the electronic control components of the air conditioner is relatively small, and the second fan can be started and the speed of the second fan can be controlled according to the heat dissipation requirements to meet the heat dissipation requirements and energy efficiency requirements.

[0067] Exemplarily, the first set threshold interval includes a first threshold interval, a second threshold interval, and a third threshold interval from small to large, and based on the detected temperature value and the first set threshold interval, controlling the operating state of the second fan and / or compressor of the air conditioner includes:

[0068] If it is determined that the detected temperature value falls within the first threshold interval, controlling the second fan of the air conditioner to operate normally;

[0069] If it is determined that the detected temperature value falls within the second threshold interval, the second fan of the air conditioner is controlled to run at an accelerated speed;

[0070] If it is determined that the detected temperature value falls within the third threshold interval, the compressor of the air conditioner is controlled to operate at a reduced frequency.

[0071] Here, the first threshold interval can be understood as the temperature at the electrical control box having sufficient margin from the temperature upper limit. In an application example, the first threshold interval is ≤70°C. If the detected temperature value falls into the first threshold interval, the second fan of the air conditioner can be controlled to operate normally, that is, the speed of the outdoor fan can operate normally according to the set speed.

[0072] Here, the second threshold interval can be understood as the temperature at the electric control box having insufficient margin from the upper temperature limit. In an application example, the value range of the second threshold interval is: 70°C < temperature value < 73°C. If the detected temperature value falls into the second threshold interval, the second fan of the air conditioner can be controlled to accelerate. Exemplarily, the accelerated operation can be to control the second fan to run at a speed higher than the set speed. For example, when the detected temperature value falls into the second threshold interval, the speed of the second fan is controlled to be positively correlated with the detected temperature value, that is, it increases with the increase of the detected temperature value, or the speed of the second fan is controlled to run at a set high speed.

[0073] Here, the third threshold interval can be understood as a situation where the temperature at the electric control box has reached the upper temperature limit and the speed of the second fan has reached the rated speed. In an application example, the third threshold interval is ≥75°C. If the detected temperature value falls into the third threshold interval, the compressor of the air conditioner can be controlled to reduce the frequency. The compressor frequency reduction operation can be understood as controlling the compressor to operate at a frequency below the frequency value determined by the refrigeration performance, thereby reducing the heat generation of the power device. Exemplarily, the air conditioner can restore the control of the compressor to operate at a frequency value determined by the refrigeration performance when it is determined that the detected temperature value is below the third threshold interval, that is, the detected temperature value is <75°C.

[0074] Exemplarily, the second set threshold interval includes a fourth threshold interval less than the set temperature threshold and a fifth threshold interval greater than or equal to the set temperature threshold, and based on the detected temperature value and the second set threshold interval, controlling the operating state of the second fan of the air conditioner includes:

[0075] If it is determined that the detected temperature value falls within the fourth threshold interval, the second fan of the air conditioner is controlled to be in an off state;

[0076] If it is determined that the detected temperature value falls within the fifth threshold interval, the second fan of the air conditioner is controlled to start running.

[0077] It is understandable that when the detected temperature value falls into the fourth threshold interval, it indicates that the heating inside the electric control box is relatively low, and the second fan may not be started at this time, thereby improving the energy efficiency of the air conditioner; when the detected temperature value falls into the fifth threshold interval, it indicates that the heating inside the electric control box needs to be dissipated by the wind wheel, and the second fan is started to run, so that the airflow generated by the second fan drives the wind wheel to rotate, thereby realizing air cooling of the heat dissipation channel. Exemplarily, the speed of the second fan can increase with the increase of the detected temperature value, that is, the speed of the second fan increases with the increase of the temperature inside the electric control box, so as to avoid the temperature rise of the power device too fast and ensure the reliability of the operation of the power device.

[0078] Taking a kitchen air conditioner as an example, the control method of the kitchen air conditioner is illustrated below in combination with an application example.

[0079] Application Example 1

[0080] like Figure 5 As shown, in this application example, the kitchen air conditioner operates in cooling mode, including:

[0081] Step 501: the kitchen air conditioner operates in cooling mode, and the compressor, the first fan and the second fan are running.

[0082] It can be understood that, in response to a control instruction, the kitchen air conditioner can operate in a refrigeration mode. At this time, the compressor, the first fan, and the second fan all operate, and the heat generation of the electronic control device is relatively large. Moreover, the jet flow generated by the rotation of the second fan can drive the passive wind wheel to rotate, thereby taking away the heat in the heat dissipation channel and realizing air-cooled heat dissipation.

[0083] Step 502, obtain the temperature T of the heater.

[0084] Here, the processor of the kitchen air conditioner can obtain the temperature T of the heater (i.e., the aforementioned detected temperature value) based on the temperature sensor, and control the rotation speed of the second fan based on the detected temperature value, thereby improving the heat dissipation effect of the electronic control device and being compatible with the energy efficiency requirements; in addition, the heat dissipation effect of the electronic control device can also be improved based on the frequency control of the compressor.

[0085] Step 503, determine whether T ≤ 70°C. If so, execute Step 504; if not, execute Step 505.

[0086] Step 504, the external fan rotates at the rotation speed required by the performance.

[0087] Here, if it is determined that the temperature T of the heater falls within the first threshold range, the second fan of the kitchen air conditioner is controlled to operate normally; otherwise, execute Step 505.

[0088] Exemplarily, assume that the indoor ambient temperature is 37°C, the rotation speed of the second fan is 1000 revolutions per minute, the rotation speed of the first fan is 800 revolutions per minute, and the compressor operates at a frequency of 47 Hz. Suppose the temperature T of the heating device on the air-cooled radiator is 70°C at this time, and the distance from the upper limit value of 75°C is sufficient, then the second fan operates at 1000 revolutions per minute.

[0089] Step 505, determine whether 70°C < T < 73°C. If so, execute Step 506; if not, execute Step 507.

[0090] Step 506, gradually increase the rotation speed of the second fan.

[0091] Here, if it is determined that the temperature T of the heater falls within the second threshold range, the second fan of the kitchen air conditioner is controlled to accelerate. For example, when the temperature T of the heating device rises to 73°C and the margin from the upper limit value is not much, the processor will force the system to increase the rotation speed of the second fan to 1200 revolutions per minute until the temperature T drops below 73°C.

[0092] Step 507, determine whether T ≥ 75°C. If so, execute Step 508.

[0093] Step 508, the compressor operates at a reduced frequency.

[0094] Here, if it is determined that the speed of the second fan has been increased to the upper limit of 1400 revolutions per minute and still cannot reduce the temperature T, and the temperature T has reached 75° C., the compressor is controlled to operate at a reduced frequency.

[0095] Application Example 2

[0096] like Figure 6 As shown, in this application example, the kitchen air conditioner operates in the air supply mode, which specifically includes:

[0097] Step 601, the kitchen air conditioner operates in air supply mode, and the first fan operates.

[0098] It is understandable that the kitchen air conditioner can operate in the air supply mode in response to the control instruction. At this time, the first fan is running, the compressor and the second fan are not started, and the heat generated by the electronic control components is small, that is, the electronic control components related to the first fan will generate heat.

[0099] Step 602, obtaining the heater temperature T.

[0100] Here, the processor of the kitchen air conditioner can obtain the heater temperature T (i.e. the aforementioned detected temperature value) based on the temperature sensor, and control the speed of the second fan based on the detected temperature value, thereby improving the heat dissipation effect of the electronic control device and being compatible with energy efficiency requirements.

[0101] Step 603, determine whether T>65°C, if not, execute step 604, if yes, execute step 605.

[0102] Step 604, the second fan is turned off.

[0103] Step 605, the second fan runs at a low speed to drive the passive wind wheel to perform air cooling and heat dissipation. When the temperature T continues to increase, the speed of the second fan is increased accordingly.

[0104] It is understandable that when the temperature T is lower than 65°C, the external fan (i.e., the second fan) does not start to improve the system energy efficiency. When the temperature T exceeds 65°C, the external fan starts to run at a low speed, driving the passive wind wheel to dissipate heat from the air-cooled radiator. When the temperature continues to increase, the speed of the external fan is increased accordingly to dissipate heat.

[0105] In order to implement the method of the embodiment of the present application, the embodiment of the present application also provides an air conditioner. Figure 7 Only an exemplary structure of the air conditioner is shown, not all structures, and it can be implemented as needed. Figure 7 Partial or complete structure shown.

[0106] like Figure 7As shown, the air conditioner 700 provided in the embodiment of the present application includes: at least one processor 701, a memory 702 and a user interface 703. The various components in the air conditioner 700 are coupled together through a bus system 704. It can be understood that the bus system 704 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 704 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, in Figure 7 Various buses are labeled as bus system 704 .

[0107] The user interface 703 may include a display, a keyboard, a mouse, a trackball, a click wheel, keys, buttons, a touch pad or a touch screen.

[0108] The memory 702 in the embodiment of the present application is used to store various types of data to support the operation of the air conditioner. Examples of such data include: any computer program used to operate on the air conditioner.

[0109] The control method of the air conditioner disclosed in the embodiment of the present application can be applied to the processor 701, or implemented by the processor 701. The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the control method of the air conditioner can be completed by the hardware integrated logic circuit or software instructions in the processor 701. The above-mentioned processor 701 can be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 701 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the memory 702. The processor 701 reads the information in the memory 702 and completes the steps of the control method of the air conditioner provided in the embodiment of the present application in combination with its hardware.

[0110] In an exemplary embodiment, the air conditioner can be implemented by one or more application specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field programmable gate array (FPGA), general processor, controller, microcontroller (MCU), microprocessor, or other electronic components to execute the aforementioned method.

[0111] It can be understood that the memory 702 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0112] In an exemplary embodiment, the present application also provides a storage medium, namely a computer storage medium, which may be a computer-readable storage medium, for example, a memory 702 storing a computer program, and the computer program may be executed by a processor 701 of an air conditioner 700 to complete the steps described in the method of the present application. The computer-readable storage medium may be a memory such as a ROM, a PROM, an EPROM, an EEPROM, a Flash Memory, a magnetic surface memory, an optical disk, or a CD-ROM.

[0113] In an exemplary embodiment, the embodiment of the present application further provides a computer program product, including a computer program, which can be executed by the processor 701 of the air conditioner 700 to complete the steps described in the method of the embodiment of the present application.

[0114] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0115] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0116] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An air conditioner, characterized in that: include: A first sub-device and a second sub-device, wherein the first sub-device comprises a first housing, a first heat exchanger and a first fan arranged on the first housing, wherein the first fan is used to guide the airflow to enter the room after heat exchange with the first heat exchanger; the second sub-device comprises a second housing, a second heat exchanger and a second fan arranged on the second housing, wherein the second fan is used to guide the airflow to be discharged outdoors after heat exchange with the second heat exchanger; wherein an electric control box for sealing and protecting the electric control device is arranged on the first housing, and the second housing has an exhaust duct for guiding the airflow to the outdoors; a heat dissipation channel assembly, disposed between the first shell and the second shell to form a heat dissipation channel, the heat dissipation channel being disposed toward a first side of the first shell and corresponding to the electric control box, and a second side of the heat dissipation channel being connected to the exhaust duct; The wind wheel is arranged at the connection point between the heat dissipation channel and the exhaust duct, and is used for driving the heat dissipation channel to perform air cooling and heat dissipation under the action of the airflow in the exhaust duct.

2. The air conditioner according to claim 1, characterized in that: The heat dissipation channel assembly is detachably connected to the first shell and / or the second shell.

3. The air conditioner according to claim 1, characterized in that: A through hole is provided on the side wall of the exhaust duct, and the end of the second side of the heat dissipation channel is communicated with the through hole and is sealedly connected to the through hole.

4. The air conditioner according to claim 1, characterized in that: The heat dissipation channel assembly forms one or more air inlets on the first side.

5. The air conditioner according to claim 4, characterized in that: The electric control box comprises a first cavity area for accommodating a first type of electric control device and a second cavity area for accommodating a second type of electric control device, wherein the height of the first type of electric control device is smaller than the height of the second type of electric control device, the height of the first cavity area is smaller than the height of the second cavity area, and a first radiator is arranged at a position of the top plate of the electric control box corresponding to the first cavity area, and a second radiator is arranged at a position corresponding to the second cavity area; The heat dissipation channel assembly forms a plurality of air inlets on the first side, and the plurality of air inlets include a first air inlet for supplying air to flow through the first heat sink and a second air inlet for supplying air to flow through the second heat sink.

6. The air conditioner according to any one of claims 1 to 5, characterized in that: The first shell and the second shell are spaced apart and fixedly connected.

7. The air conditioner according to any one of claims 1 to 5, characterized in that: The air conditioner also includes: The temperature sensor is used to generate a temperature detection value indicating the temperature at the electric control box.

8. The air conditioner according to claim 5, characterized in that: The heat dissipation channel assembly includes a first inlet channel enclosing the first radiator and a second inlet channel enclosing the second radiator, the inlet side of the first inlet channel forms the first air inlet, and the inlet side of the second inlet channel forms the second air inlet.

9. The air conditioner according to claim 5, characterized in that: The electric control box includes an outer shell and an inner shell. A PCB board is arranged in the inner shell. The first type of electric control components are arranged on the PCB board corresponding to the first cavity area. The second type of electric control components are arranged on the PCB board corresponding to the second cavity area.

10. The air conditioner according to claim 9, characterized in that: The inner shell is made of plastic material, and the outer shell is made of metal heat-conducting parts.

Images