Indoor unit and air conditioning system

Abstract

The invention relates to the technical field of air conditioners, particularly provides an indoor unit and an air conditioning system, and aims to solve the problems that a control panel of an existing indoor unit cannot extinguish fire in time after a fire disaster occurs, and large loss is likely to be caused. In order to achieve the purpose, the indoor unit comprises a fire source detector arranged at a control panel of the indoor unit and used for detecting whether a fire occurs on the control panel or not, and the control panel is used for controlling the indoor unit to operate; the electric control board is in communication connection with the fire source detector, and the electric control board and the control panel are arranged at an interval; the fire extinguishing device is in communication connection with the electric control panel, and the fire extinguishing device can extinguish fire of the control panel; and when the fire source detector detects that a fire occurs on the control panel, the electric control board controls the fire extinguishing device to extinguish fire.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly provides an indoor unit and an air conditioning system. Background Art

[0002] With the development of society and economy, air conditioners have become essential electrical appliances in families and workplaces. The service life of an air conditioner is generally up to more than ten years, and during use, many components will inevitably age. There are several components arranged on the control panel. After aging, the heat generated by the components will not decrease or even increase. This will cause the control panel to catch fire spontaneously. Since the control panel is arranged inside the indoor unit, after a fire occurs, as the components and circuit boards are all flammable items, the fire will spread rapidly in the initial stage of the fire, and it is not easy for users to observe it in time, resulting in large-area fires and causing significant losses.

[0003] Therefore, there is an urgent need for an indoor unit and an air conditioning system to solve the above technical problems. Summary of the Invention

[0004] The present invention aims to solve the above technical problems, that is, to solve the problem that the control panel of the existing indoor unit cannot extinguish the fire in time after a fire occurs, which is likely to cause significant losses.

[0005] In a first aspect, the present invention provides an indoor unit, which includes:

[0006] A fire source detector, which is arranged at the control panel of the indoor unit and is used to detect whether a fire occurs on the control panel. The control panel is used to control the operation of the indoor unit;

[0007] An electronic control board, which is communicatively connected to the fire source detector and is arranged at an interval from the control panel;

[0008] A fire extinguishing device, which is communicatively connected to the electronic control board and can extinguish the fire on the control panel;

[0009] When the fire source detector detects that a fire occurs on the control panel, the electronic control board controls the fire extinguishing device to extinguish the fire.

[0010] In the specific implementation manner of the above indoor unit, the fire extinguishing device includes a water tank, a water pump and a nozzle. The water pump is communicatively connected to the electronic control board. The water pump is connected to the water tank and the nozzle and is used to spray the water in the water tank onto the control panel through the nozzle.

[0011] In the specific implementation manner of the above indoor unit, the water inlet of the water tank is connected to the water receiving tray of the indoor unit, and the condensed water generated by the indoor unit can replenish water for the water tank.

[0012] In the specific implementation manner of the indoor unit described above, the indoor unit further includes a backup battery, which is electrically connected to the electronic control board, the fire detector, and the water pump, and is used to supply power to the electronic control board, the fire detector, and the water pump.

[0013] In the specific implementation manner of the indoor unit described above, the indoor unit further includes an alarm device, which is connected to the electronic control board and the backup battery. When a fire occurs on the control panel, the electronic control board controls the alarm device to give an alarm.

[0014] In the specific implementation manner of the indoor unit described above, the electronic control board is communicatively connected to the power switch of the indoor unit. When a fire occurs on the control panel, the electronic control board controls the power supply to be cut off.

[0015] In the specific implementation manner of the indoor unit described above, the backup battery is electrically connected to the power supply of the indoor unit, and the power supply of the indoor unit can charge the backup battery.

[0016] In the specific implementation manner of the indoor unit described above, during the fire extinguishing process of the fire extinguishing device, when the fire detector detects that the fire extinguishing is completed, the electronic control board controls the fire extinguishing device to close.

[0017] In the specific implementation manner of the indoor unit described above, a liquid level detection member is arranged in the water tank for detecting the liquid level in the water tank; the liquid level detection member is communicatively connected to the electronic control board;

[0018] A control valve is arranged between the water receiving tray and the water tank, and the control valve is communicatively connected to the electronic control board. When replenishing water to the water tank, the electronic control board controls the control valve to open.

[0019] In a second aspect, the present invention provides an air conditioning system, which includes the indoor unit as described above.

[0020] In the case of adopting the above technical solution, the indoor unit of the present invention includes a fire detector, an electronic control board, and a fire extinguishing device; the fire detector is arranged at the control panel of the indoor unit for detecting whether a fire occurs on the control panel, and the control panel is used to control the operation of the indoor unit; the electronic control board is communicatively connected to the fire detector and is arranged at an interval from the control panel; the fire extinguishing device is communicatively connected to the electronic control board, and the fire extinguishing device can extinguish the fire on the control panel; when the fire detector detects that a fire occurs on the control panel, the electronic control board controls the fire extinguishing device to extinguish the fire. When a fire occurs on the control panel, controlling the fire extinguishing through the electronic control board can also ensure that the relevant fire extinguishing operations can be successfully completed, avoid the spread of the fire caused by the failure to extinguish the fire in time after the fire occurs, and can also avoid the loss of indoor property caused by the excessive fire.

[0021] In addition, by providing a backup battery, the indoor unit can be powered off, and the fire extinguishing operation can still be carried out smoothly even in the event of a power outage. This can prevent short circuits in the wires connected to the indoor unit and ensure the normal operation of other electrical equipment connected to the wires.

[0022] Furthermore, by providing an alarm device, an alarm can be issued, enabling users to quickly detect a fire alarm so that they can handle it in a timely manner and prevent unnecessary spread of the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which:

[0024] Figure 1 is a schematic structural diagram of the indoor unit provided by the present invention;

[0025] Figure 2 is a flowchart of the control method of the indoor unit provided by the present invention.

[0026] LIST OF REFERENCE NUMERALS:

[0027] 10, control panel; 20, power switch;

[0028] 11, nozzle; 12, water pump; 13, water tank; 2, fire source detector; 3, electronic control board; 4, backup battery; 5, alarm device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0030] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "up", "down", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installed", "set", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Since the control panel of the indoor unit is set inside the indoor unit, in case of a fire, as components and circuit boards are all flammable items, the fire will spread rapidly in the initial stage of the fire, and it is not easy for users to observe it in time, which is likely to cause large-scale fires and result in significant losses. To solve the above technical problems, the present invention discloses an air-conditioning system.

[0033] The air-conditioning system includes an outdoor unit, an indoor unit and a throttling element. The outdoor unit includes an outdoor heat exchanger, and the indoor unit includes an indoor heat exchanger and an indoor fan. Among them, the indoor fan is arranged at the air inlet of the indoor unit, used to send air to the indoor heat exchanger and blow it out through the air outlet. Among them, the outdoor heat exchanger, the throttling element and the indoor heat exchanger are connected in sequence.

[0034] In this embodiment, the throttling element is specifically an electronic expansion valve; in other embodiments, the throttling element can also be a thermal expansion valve or a two-way throttling valve, etc., as long as it can play the role of regulating flow rate and throttling.

[0035] The air-conditioning system further includes a control module. The throttling element is communicatively connected to the control module. The control module can control the opening degree of the control valve to control the refrigerant flow rate flowing through the throttling element, and further control the refrigeration or heating capacity of the air-conditioning system.

[0036] The air-conditioning system also includes a compressor and a four-way valve. The suction port of the compressor is connected to the first interface of the four-way valve, and the discharge port is connected to the second interface of the four-way valve; the side of the outdoor heat exchanger away from the control valve is connected to the third interface of the four-way valve, and the side of the indoor heat exchanger away from the throttling element is connected to the fourth interface of the four-way valve; by changing the state of the four-way valve, the working mode of the air-conditioning system is switched. Among them, the four-way valve is communicatively connected to the control module, and the control module controls the state of the four-way valve to further adjust the working mode of the air-conditioning system.

[0037] In addition, the air-conditioning system also includes a gas-liquid separator. The inlet of the gas-liquid separator is connected to the first interface of the four-way valve, and the exhaust port of the gas-liquid separator is connected to the suction port of the compressor. The gaseous refrigerant discharged from the gas-liquid separator is inhaled by the compressor. The refrigerant flowing into the gas-liquid separator from the first interface of the four-way valve, where the liquid refrigerant is separated and remains in the gas-liquid separator. Under the action of the subsequent flowing gaseous refrigerant, the liquid refrigerant in the gas-liquid separator will absorb the heat in the gaseous refrigerant and vaporize, and then flow out from the exhaust port of the gas-liquid separator, flow into the suction port of the compressor, and be inhaled by the compressor for compression.

[0038] The air-conditioning system also includes a gas-side stop valve and a liquid-side stop valve. The gas-side stop valve is arranged between the fourth interface of the four-way valve and the indoor heat exchanger. The liquid-side stop valve is arranged between the indoor heat exchanger and the throttling element.

[0039] To better achieve environmental protection, the refrigerant filled in the air-conditioning system is mostly flammable refrigerant nowadays. When refrigerant leaks occur on the indoor heat exchanger side, by closing the gas-side stop valve and the liquid-side stop valve, the refrigerant leakage on the outdoor heat exchanger and compressor sides can be effectively avoided, the refrigerant leakage amount can be reduced, and thus the probability of safety accidents can be decreased. Since the refrigerant on the outdoor heat exchanger and compressor sides is retained within the air-conditioning system, when refrigerant filling is carried out again after maintenance, the refrigerant filling amount can be reduced, and the maintenance cost can be lowered. When refrigerant leaks occur on the outdoor heat exchanger side, by closing the gas-side stop valve and the liquid-side stop valve, the refrigerant leakage on the indoor heat exchanger side can be effectively avoided, and thus the probability of safety accidents can be decreased; since the refrigerant on the indoor heat exchanger side is retained within the air-conditioning system, when refrigerant filling is carried out again after maintenance, the refrigerant filling amount can be reduced, and the maintenance cost can be lowered.

[0040] In the refrigeration mode, the first interface and the fourth interface of the four-way valve are connected, and the second interface and the third interface are connected; the high-temperature and high-pressure refrigerant flowing out of the compressor flows through the second interface and the third interface and then flows to the outdoor heat exchanger, where heat exchange occurs to absorb the cold in the air and reduce the high-temperature refrigerant to a low-temperature refrigerant; after flowing out of the outdoor heat exchanger, it flows through the throttling element and the liquid-side stop valve to the indoor heat exchanger for heat exchange; at the indoor heat exchanger, the low-temperature liquid refrigerant absorbs the heat in the air and vaporizes to cool the indoor space. After flowing out of the indoor heat exchanger, it flows back to the compressor through the gas-side stop valve, the first interface and the fourth interface of the four-way valve, and the gas-liquid separator for compression again; for the next cycle.

[0041] In the heating mode, the second interface and the fourth interface of the four-way valve are connected, and the first interface and the third interface are connected; the high-temperature and high-pressure refrigerant flowing out of the compressor flows through the second interface and the fourth interface, and then through the gas-side stop valve to the outdoor heat exchanger, where heat exchange occurs, and the high-temperature gaseous refrigerant releases heat to heat the indoor space; after the high-temperature gaseous refrigerant releases heat at the indoor heat exchanger, it becomes a low-temperature liquid refrigerant. The refrigerant flowing out of the indoor heat exchanger flows through the liquid-side stop valve and then to the electronic expansion valve, and then to the outdoor heat exchanger for heat exchange; the low-temperature liquid refrigerant absorbs heat at the outdoor heat exchanger and becomes a low-temperature gaseous refrigerant. After flowing out of the outdoor heat exchanger, the refrigerant flows back to the compressor through the first interface and the third interface of the four-way valve and the gas-liquid separator for compression again; for the next cycle.

[0042] In the defrost mode, it operates in the heating mode before the defrost mode. That is, the high-temperature and high-pressure refrigerant flowing out of the compressor passes through the second interface and the fourth interface, and then flows through the gas-side stop valve to the outdoor heat exchanger for heat exchange in the indoor heat exchanger. The high-temperature gaseous refrigerant releases heat to heat the room; after the high-temperature gaseous refrigerant releases heat in the indoor heat exchanger, it becomes a low-temperature liquid refrigerant. The refrigerant flowing out of the indoor heat exchanger passes through the liquid-side stop valve and then flows to the electronic expansion valve, and then flows to the outdoor heat exchanger for heat exchange; the low-temperature liquid refrigerant absorbs heat at the outdoor heat exchanger to become a low-temperature gaseous refrigerant. After the refrigerant flows out of the outdoor heat exchanger, it flows back to the compressor through the first interface, the third interface of the four-way valve and the gas-liquid separator for compression again. Then, it switches to the flow mode of the refrigeration mode for defrosting, that is, the high-temperature and high-pressure refrigerant flowing out of the compressor passes through the second interface and the third interface and then flows to the outdoor heat exchanger for heat exchange to absorb the cold in the air, reducing the high-temperature refrigerant to a low-temperature refrigerant; after flowing out of the outdoor heat exchanger, it passes through the throttling element and the liquid-side stop valve and flows to the indoor heat exchanger for heat exchange; at the indoor heat exchanger, the low-temperature liquid refrigerant absorbs the heat in the air and vaporizes to cool the room. After flowing out of the indoor heat exchanger, it flows back to the compressor through the gas-side stop valve, the first interface and the fourth interface of the four-way valve and the gas-liquid separator for compression again. When controlling the refrigerant flow in the defrost mode in the way of the refrigeration mode, only the refrigerant flow is controlled, but the outdoor fan and the indoor fan do not operate. The non-operation of the outdoor fan can accelerate the defrosting of the outdoor heat exchanger. Specifically, when the outdoor fan does not operate, the heat at the outdoor heat exchanger will not be taken away by the cold wind outside, and the heat released by the refrigerant can be used for defrosting as much as possible, which can accelerate the defrosting speed.

[0043] The air-conditioning system further includes a frost amount sensor disposed on the outdoor heat exchanger for detecting whether the outdoor heat exchanger is frosted and the amount of frost on the outdoor heat exchanger. Among them, the frost amount sensor is communicatively connected to the control module. When the frost amount sensor detects the frost amount on the outdoor heat exchanger, it transmits a signal to the control module, and the control module determines whether it reaches a certain thickness. After reaching a certain thickness, the control module controls the air-conditioning system to start the defrost mode for defrosting.

[0044] As Figure 1 shown, the indoor unit further includes a fire source detector 2, a control panel 10, an electronic control board 3 and a fire extinguishing device. Among them, the fire source detector 2 is disposed at the control panel 10 of the indoor unit for detecting whether a fire occurs at the control panel 10. The fire source detector 2 is specifically a temperature sensor or a flame sensor. When the temperature sensor detects that the temperature of the control panel 10 exceeds the set value, it determines that a fire has occurred; or when the flame sensor detects a flame, it determines that a fire has occurred.

[0045] The control panel 10 is used to control the operation of the indoor unit. Among them, the indoor fan and other components of the indoor unit related to refrigeration, heating or defrosting are connected to the control panel 10. That is, the indoor fan, the valve connected to the indoor heat exchanger, and various sensors on the indoor fan and the indoor heat exchanger are all connected to the control panel 10, so that the control panel 10 can control the normal operation of the indoor unit.

[0046] The electronic control board 3 is arranged inside the indoor unit and is spaced from the control panel 10. A high-temperature resistant and fireproof isolation board is arranged between the two, so that even if a fire occurs in the control panel 10, it will not affect the electronic control board 3.

[0047] The fire detector 2 is communicatively connected to the electronic control board 3, and the fire detector 2 transmits the detected information to the electronic control board 3. The fire extinguishing device is communicatively connected to the electronic control board 3, and the fire extinguishing device can extinguish the fire on the control panel 10. When the fire detector 2 detects a fire in the control panel 10, the electronic control board 3 controls the fire extinguishing device to extinguish the fire. In addition, during the fire extinguishing process of the fire extinguishing device, when the fire detector 2 detects that the fire has been extinguished, the electronic control board 3 controls the fire extinguishing device to close; this avoids the fire extinguishing device from doing useless work, causing unnecessary waste of water resources, and reducing the pollution of the indoor environment by the water used for fire extinguishing.

[0048] Among them, the fire extinguishing device includes a water tank 13, a water pump 12 and a nozzle 11. The water pump 12 is communicatively connected to the electronic control board 3. The water pump 12 is connected to the water tank 13 and the nozzle 11, and is used to spray the water in the water tank 13 onto the control panel 10 through the nozzle 11.

[0049] The nozzle 11 is arranged inside the indoor unit and is fixed on the housing or other components of the indoor unit. The water spraying port of the nozzle 11 is arranged facing the control panel 10; this can enable the fire extinguishing device to directly spray water onto the control panel 10 when extinguishing the fire on the control panel 10, so as to effectively extinguish the fire on the control panel 10. Due to the arrangement of the isolation board, when the nozzle 11 sprays water onto the control panel 10, the sprayed water will not splash onto the electronic control board 3, which can ensure that the electronic control board 3 will not short-circuit and can ensure the normal operation of the electronic control board 3 to control the normal progress of the fire extinguishing operation.

[0050] The water pump 12 is also arranged inside the indoor unit; among them, the water tank 13 is arranged inside the indoor unit or outside the indoor unit, specifically located at a position close to the bottom of the indoor unit.

[0051] The water inlet of the water tank 13 is connected to the water receiving tray of the indoor unit, and the condensed water generated by the indoor unit can replenish water for the water tank 13. Since the water tank 13 is arranged at the bottom of the indoor unit, the water in the water receiving tray can replenish water for the water tank 13.

[0052] A liquid level detection component is provided inside the water tank 13 for detecting the liquid level inside the water tank 13; the liquid level detection component is communicatively connected to the electronic control board 3; the liquid level detection component is specifically a liquid level sensor. The liquid level detection component detects the liquid level of the water tank 13 and transmits the detected liquid level information to the electronic control board 3, and the electronic control board 3 determines whether to replenish water for the water tank 13 according to the liquid level information.

[0053] A control valve is provided between the water receiving tray and the water tank 13, and the control valve is communicatively connected to the electronic control board 3. When replenishing water for the water tank 13, the electronic control board 3 controls the control valve to open.

[0054] In addition, the water tank 13 is also connected to an external water source. When the indoor unit has not been in the cooling state for a long time and cannot replenish water for the water tank 13, the external water source replenishes water for the water tank 13. The external water source can be tap water (if it is convenient to connect tap water, then the external water source is tap water), or it can be an external water distribution tank 13 (if it is not convenient to connect tap water), as long as it can replenish water for the water tank 13.

[0055] When it is detected that the liquid level in the water tank 13 is lower than the set value and the indoor unit will not be in the cooling state in the future for a period of time, the external water source is used to replenish water for the water tank 13. Whether the indoor unit will be in the cooling state in the future for a period of time is judged according to the local climate conditions in the future for a period of time.

[0056] Among them, the electronic control board 3 is communicatively connected to the power switch 20 of the indoor unit. When a fire occurs on the control panel 10, the electronic control board 3 controls the power to be cut off; moreover, the power cut-off operation occurs before the fire extinguishing. Since water is used for fire extinguishing, if the power is not cut off, a short circuit phenomenon is likely to occur, affecting the use of other electrical equipment in the home. Therefore, when a fire occurs, the power is cut off first to ensure the safe use of other electrical appliances.

[0057] In addition, the indoor unit further includes a backup battery 4 and an alarm device 5. Among them, the backup battery 4 is arranged away from the control panel 10. When extinguishing the fire on the control panel 10, the sprayed water will not splash onto the backup battery 4, ensuring that the connection between the backup battery 4 and each electrical component will not be short-circuited, and ensuring that each device participating in the fire extinguishing process can operate normally.

[0058] The backup battery 4 is electrically connected to the electronic control board 3, the fire detector 2, and the water pump 12, and is used to supply power to the electronic control board 3, the fire detector 2, and the water pump 12. Since the power supply of the indoor unit is disconnected first during a fire, the indoor unit is in a power-off state and cannot supply power to the water pump 12. Therefore, the backup battery 4 is used to supply power to the electronic control board 3, the fire detector 2, and the water pump 12. Among them, the backup battery 4 is electrically connected to the power supply of the indoor unit, and the power supply of the indoor unit can charge the backup battery 4; when the indoor unit is working normally or turned off, the power supply of the indoor unit can charge the backup battery 4 so that the power of the backup battery 4 remains at a relatively high level, enabling the backup battery 4 to have sufficient power to supply power to the water pump 12, the electronic control board 3, the alarm device 5, and the fire detector 2.

[0059] The alarm device 5 is connected to the electronic control board 3 and the backup battery 4, and the backup battery 4 supplies power to the alarm device 5 so that the alarm device 5 can also give an alarm after the indoor unit is powered off. Among them, the alarm device 5 includes an alarm lamp and a buzzer, which can provide light and sound alarms, making it easier for users to obtain alarm information. Among them, the alarm lamp is arranged on the outer side of the housing of the indoor unit or a hole is opened on the housing, and the alarm lamp is embedded in the hole. The buzzer is arranged inside the housing, but a sound transmission hole is provided at the position of the housing opposite to the buzzer. When a fire occurs on the control panel 10, the electronic control board 3 controls the alarm device 5 to give an alarm. After giving an alarm, a prompt can be given to the user so that the user can process the indoor unit and perform timely maintenance on the indoor unit.

[0060] As Figure 2 shown, the control method of the indoor unit includes the following steps:

[0061] S1. When the fire detector 2 detects a fire on the control panel 10, it transmits a signal to the electronic control board 3;

[0062] S2. The electronic control board 3 controls the indoor unit to cut off the power supply and operates the water pump 12 so that the nozzle 11 sprays water towards the control panel 10 to extinguish the fire on the control panel 10; moreover, at the same time, it controls the alarm device 5 to give an alarm;

[0063] S3. After the fire detector 2 detects that the fire extinguishing is completed during the fire extinguishing process, the electronic control board 3 controls the fire extinguishing device to close and no longer extinguish the fire on the control panel 10; however, the alarm device 5 continues to give an alarm.

[0064] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An indoor unit, characterized in that, It includes: A fire source detector (2), which is arranged at the control panel (10) of the indoor unit and is used to detect whether a fire occurs on the control panel (10), and the control panel (10) is used to control the operation of the indoor unit; An electronic control board (3), which is communicatively connected to the fire source detector (2) and is arranged at an interval from the control panel (10); A fire extinguishing device, which is communicatively connected to the electronic control board (3), and the fire extinguishing device can extinguish the fire on the control panel (10); When the fire source detector (2) detects that a fire occurs on the control panel (10), the electronic control board (3) controls the fire extinguishing device to extinguish the fire.

2. The indoor unit according to claim 1, characterized in that, The fire extinguishing device includes a water tank (13), a water pump (12) and a nozzle (11). The water pump (12) is communicatively connected to the electronic control board (3). The water pump (12) is connected to the water tank (13) and the nozzle (11) and is used to spray the water in the water tank (13) onto the control panel (10) through the nozzle (11).

3. The indoor unit according to claim 2, characterized in that, The water inlet of the water tank (13) is connected to the water receiving tray of the indoor unit, and the condensed water generated by the indoor unit can supplement water to the water tank (13).

4. The indoor unit according to claim 2, characterized in that, The indoor unit further includes a backup battery (4), which is electrically connected to the electronic control board (3), the fire source detector (2) and the water pump (12) and is used to supply power to the electronic control board (3), the fire source detector (2) and the water pump (12).

5. The indoor unit according to claim 4, characterized in that, The backup battery (4) is electrically connected to the power supply of the indoor unit, and the power supply of the indoor unit can charge the backup battery (4).

6. The indoor unit according to claim 4, characterized in that, The indoor unit further includes an alarm device (5), which is connected to the electronic control board (3) and the backup battery (4). When a fire occurs on the control panel (10), the electronic control board (3) controls the alarm device (5) to give an alarm.

7. The indoor unit according to claim 1, characterized in that The electronic control board (3) is communicatively connected to the power switch (20) of the indoor unit. When a fire occurs on the control panel (10), the electronic control board (3) controls the power supply to be cut off.

8. The indoor unit according to claim 1, characterized in that During the fire extinguishing process of the fire extinguishing device, when the fire source detector (2) detects that the fire extinguishing is completed, the electronic control board (3) controls the fire extinguishing device to be closed.

9. The indoor unit according to claim 2, wherein, A liquid level detection component is arranged in the water tank (13) and is used to detect the liquid level in the water tank (13); the liquid level detection component is communicatively connected to the electronic control board (3); A control valve is arranged between the water receiving tray and the water tank (13). The control valve is communicatively connected to the electronic control board (3). When supplementing water to the water tank (13), the electronic control board (3) controls the control valve to open.

10. An air conditioning system, characterized in that, It includes the indoor unit according to any one of claims 1-9.

Images