Roof machine

Abstract

The utility model provides a roof unit. The roof unit comprises a shell, an indoor unit, an outdoor unit, a door plate and a driving piece. A partition plate is arranged in the shell and divides the shell into a first cavity and a second cavity, the indoor unit is arranged in the first cavity, a gas sensor is arranged in the first cavity, the outdoor unit is arranged in the second cavity, and a ventilation opening is formed in the partition plate; the driving part is arranged in the shell, the door plate is provided with a connecting end, the driving part is connected or disconnected with the connecting end, and the door plate is used for closing or opening the ventilation opening according to the refrigerant leakage condition. The door plate automatically opens the ventilation opening according to the refrigerant leakage condition, so that the leaked refrigerant can be discharged from the first cavity and is prevented from being released into an air duct communicated with the indoor space along with the operation of the indoor unit.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioning and refrigeration, and in particular relates to a rooftop unit. Background Art

[0002] With the improvement of environmental awareness at home and abroad, more and more countries and companies are using environmentally friendly refrigerants in refrigeration products. Among them, the most widely used refrigerants such as R32, R454B, R290, etc. are mostly flammable and explosive gases with a density greater than that of air. Under normal temperature and pressure conditions, since air-conditioning products are mostly installed at the top or higher places of the site, if a refrigerant leak occurs, it will be affected by gravity and gradually spread to the lower place and gradually gather at the bottom of the site. When it reaches a certain concentration, it will cause discomfort to the human body and there is a risk of combustion and explosion.

[0003] Currently, units that use flammable refrigerants, such as duct units, rooftop units, and household units, are mostly equipped with gas leakage sensors to control the power-on and power-off of the unit by detecting whether the refrigerant is leaking. Since the density of refrigerant is greater than that of air, the refrigerant that continues to leak after the unit is powered off will still spread downward, posing a risk of explosion. Utility Model Content

[0004] The utility model provides a rooftop unit, which can solve the technical problem that the refrigerant with continuous leakage will still diffuse downward after the unit is powered off, posing the risk of explosion, because the density of the refrigerant is greater than that of air.

[0005] The utility model provides a rooftop unit, which comprises a housing, an indoor unit, an outdoor unit, a door panel and a driving member;

[0006] The housing is provided with a partition, the partition separates the housing into a first chamber and a second chamber, the indoor unit is provided in the first chamber, a gas sensor is provided in the first chamber, the outdoor unit is provided in the second chamber, and a vent is provided on the partition;

[0007] The driving member is arranged in the shell, the door plate has a connecting end, the driving member is connected to or disconnected from the connecting end, and the door plate is used to close or open the vent according to the refrigerant leakage situation.

[0008] In some embodiments, the driving member is an electromagnet.

[0009] In some embodiments, a magnet is disposed at the connection end, and the magnet extends in a width direction of the door panel.

[0010] In some embodiments, the door panel is slidably arranged in a vertical direction, the driving member is arranged on the partition plate, the magnet member is arranged at the top end of the door panel, and the driving member is arranged opposite to the magnet member.

[0011] In some embodiments, guide rails are respectively arranged on both sides of the vent, the guide rails extend along the height direction of the vent, and the door panel is connected to the guide rails.

[0012] In some embodiments, at least two of the gas sensors are arranged in the first chamber.

[0013] In some embodiments, the indoor unit includes an evaporator, one of the gas sensors is arranged on the evaporator, and the other gas sensor is arranged on the partition.

[0014] In some embodiments, the driving member is a motor, and the output end of the motor is connected to the connection end.

[0015] In some embodiments, the door panel is slidably arranged at the vent, or a rotating shaft is vertically arranged at the vent, both ends of the rotating shaft are respectively connected to the inner wall of the vent, and one end of the door panel away from the connection end is rotatably connected to the rotating shaft.

[0016] In some embodiments, the outdoor unit includes an axial flow fan, and at least two of the axial flow fans are arranged in the second chamber.

[0017] A rooftop unit provided by the present utility model has the following beneficial effects:

[0018] The housing of the present utility model is the external structure of the entire air conditioning system. The housing is separated into two chambers by a partition, namely a first chamber and a second chamber. This setting helps to isolate the indoor unit and the outdoor unit to improve efficiency and safety. The vent arranged on the partition allows the refrigerant to flow between the first chamber and the second chamber. When the gas sensor detects signs of refrigerant leakage, the door panel automatically opens the vent according to the refrigerant leakage situation, enabling the leaked refrigerant to be discharged from the first chamber, preventing it from being released into the air duct communicating with the indoor space during the operation of the indoor unit, avoiding the accumulation of refrigerant inside the unit, and eliminating the potential hazards of fire and explosion caused by excessive refrigerant concentration in the unit. Moreover, the entire working process is automated, aiming to ensure the effective operation of the air conditioning system. At the same time, through the linkage mechanism of the gas sensor and the door panel, the safety is improved, and the impact of refrigerant leakage on the environment and human health is prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0020] Figure 1 Schematic diagram of the rooftop unit according to an embodiment of the present utility model;

[0021] Figure 2 Top view of the rooftop unit according to an embodiment of the present utility model;

[0022] Figure 3 Schematic diagram of the refrigerant flow path in the first chamber and the second chamber according to an embodiment of the present utility model;

[0023] Figure 4 Schematic diagram of the indoor unit according to an embodiment of the present utility model;

[0024] Figure 5 Schematic diagram of the outdoor unit according to an embodiment of the present utility model;

[0025] Figure 6 Schematic diagram of the partition according to an embodiment of the present utility model.

[0026] Accompanying drawings: 1 - housing; 101 - first chamber; 102 - second chamber; 2 - indoor unit; 3 - outdoor unit; 4 - door panel; 5 - driving member; 6 - partition; 601 - ventilation opening; 7 - gas sensor; 8 - magnet member; 9 - guide rail; 10 - evaporator; 11 - axial flow fan. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0029] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used herein will be made accordingly.

[0030] In addition, it should be noted that the use of terms such as "first", "second" etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0031] Referring jointly to Figure 1 and Figure 2 As shown, according to an embodiment of the present utility model, a rooftop unit is provided, which includes a housing 1, an indoor unit 2, an outdoor unit 3, a door panel 4 and a driving member 5; a partition 6 is provided in the housing 1, and the partition 6 divides the housing 1 into a first chamber 101 and a second chamber 102. The indoor unit 2 is disposed in the first chamber 101, a gas sensor 7 is disposed in the first chamber 101, the outdoor unit 3 is disposed in the second chamber 102, and a ventilation opening 601 is formed on the partition 6; the driving member 5 is disposed in the housing 1, the door panel 4 has a connection end, and the driving member 5 is connected or disconnected from the connection end so that the door panel 4 is slidably disposed at the ventilation opening 601, and the door panel 4 is used to close or open the ventilation opening 601 according to the refrigerant leakage situation.

[0032] The rooftop unit air conditioner is a unitary integral unit, and both the indoor unit 2 and the outdoor unit 3 are installed on the roof. The rooftop unit integrates functions such as refrigeration, heating, air supply, air purification and electrical control. The rooftop unit realizes the transfer of energy by circulating refrigerant between the indoor unit 2 and the outdoor unit 3. The indoor unit 2 absorbs the heat in the room, causing the refrigerant to evaporate and become a low-temperature and low-pressure gas. The gaseous refrigerant is transported to the outdoor unit 3 through a pipeline, and the outdoor unit 3 compresses the gaseous refrigerant into a high-temperature and high-pressure gas. The compressed refrigerant enters the condenser of the outdoor unit 3, releases heat to the outdoor environment, the refrigerant becomes a high-pressure liquid, reduces pressure and temperature, and enters the indoor unit 2. In the indoor unit 2, the low-pressure refrigerant evaporates again, absorbs the indoor heat, and completes the cycle.

[0033] Specifically, when the refrigerant leaks from the indoor unit 2, the refrigerant is released into the first chamber 101. The gas sensor 7 will identify the refrigerant leakage signal and cut off the power supply of the indoor unit 2 to prevent the leaked refrigerant from being discharged into the indoor room through the indoor unit 2. At this time, the driving member 5 is disconnected from the door panel 4, and the door panel 4 slides downward due to its own gravity, opening the ventilation opening 601 reserved between the indoor unit 2 and the outdoor unit 3. At this time, the outdoor unit 3 is still operating normally, sucking the leaked refrigerant in the first chamber 101 through the ventilation opening 601 into the second chamber 102 and discharging it outdoors. When the staff arrives at the scene to detect and repair the rooftop unit air conditioner, the indoor unit 2 resumes operation. The driving member 5 is then connected to the door panel 4, and the driving member 5 drives the door panel 4 to slide, closing the ventilation opening 601. The first chamber 101 and the second chamber 102 are restored to two isolated and enclosed spaces, and the rooftop unit operates normally.

[0034] In this embodiment, due to the compact structure of the rooftop unit, it can be installed on the roof or outdoor platform. Both the indoor unit 2 and the outdoor unit 3 are in a relatively enclosed space. When discharging the refrigerant in the first chamber 101, the airtightness and anti-leakage of the unit need to be considered. The housing 1 is the external structure of the entire air conditioning system. The housing 1 is separated into two chambers by the partition 6, namely the first chamber 101 and the second chamber 102. This setting helps to isolate the indoor unit 2 and the outdoor unit 3 to improve efficiency and safety. The ventilation opening 601 provided on the partition 6 allows the refrigerant to flow between the first chamber 101 and the second chamber 102. When the gas sensor 7 detects signs of refrigerant leakage, the door panel 4 automatically opens the ventilation opening 601 according to the refrigerant leakage situation, enabling the leaked refrigerant to be discharged from the first chamber 101, preventing it from being released into the air duct connected to the indoor space during the operation of the indoor unit 2, avoiding the accumulation of refrigerant inside the unit, and eliminating the potential hazards of fire and explosion caused by excessive refrigerant concentration in the unit. Moreover, the entire working process is automated, aiming to ensure the effective operation of the air conditioning system. At the same time, through the linkage mechanism of the gas sensor 7 and the door panel 4, the safety is improved, and the impact of refrigerant leakage on the environment and human health is prevented.

[0035] As a specific implementation manner, this embodiment is also provided with a controller. The gas sensor 7, the indoor unit 2, the outdoor unit 3, and the driving member 5 are all electrically connected to the controller. The gas sensor 7 transmits the detected refrigerant leakage situation to the controller, and the controller then controls the energization state of the driving member 5 and the operating states of the indoor unit 2 and the outdoor unit 3. In other embodiments, the controller may not be provided, and the above components may be connected to the control system of the rooftop unit instead.

[0036] Combined with reference to Figure 1 and Figure 2 As shown, the driving member 5 is an electromagnet.

[0037] Specifically, the electromagnet is installed in the housing 1. When there is no refrigerant leakage, the connecting end of the electromagnet is connected to the door panel 4. When the electromagnet is energized, the generated magnetic field can attract the connecting end of the door panel 4, causing the door panel 4 to move to the ventilation opening 601 and close the ventilation opening 601. When the electromagnet is de-energized, the magnetic field disappears, and the door panel 4 automatically opens the ventilation opening 601 under the action of gravity.

[0038] In this embodiment, the opening and closing of the ventilation opening 601 directly affect the airtight state of the rooftop unit. When refrigerant leaks, opening the ventilation opening 601 can prevent the refrigerant from further leaking into the room and flowing into the second chamber 102. The door panel 4 slides accordingly according to the attraction and release of the electromagnet to control the opening and closing of the ventilation opening 601. This setting enables the rooftop unit to respond quickly when refrigerant leaks and discharge the leaked refrigerant by opening the ventilation opening 601.

[0039] It should be noted that in this embodiment, the electromagnet only needs to be installed in the housing 1. The electromagnet can be directly installed on the partition plate 6, or a bracket with a certain height can be installed in the first chamber 101 or the second chamber 102, and the driving member 5 is installed on the frame to ensure that the driving member 5 can drive the door panel 4 to slide.

[0040] Combined with reference to Figure 1 and Figure 6 As shown, a magnet member 8 is provided at the connecting end, and the magnet member 8 extends in the width direction of the door panel 4.

[0041] Specifically, the door panel 4 itself can be made of iron material. To reduce the weight of the entire body, it can also be made of aluminum material. To ensure that the electromagnet can adsorb the door panel 4, a magnet member 8 is provided on the door panel 4.

[0042] In this embodiment, the extended setting of the magnet member 8 can increase the contact area with the door panel 4, thereby enhancing the adsorption force of the magnet on the door panel 4 and ensuring that the door panel 4 can be firmly fixed in place when closing the ventilation opening 601. The combination of the magnet member 8 and the connecting end of the door panel 4 can improve the mechanical strength of the overall structure and prevent volume loss caused by the brittleness of the magnet, thus ensuring long-term stable use. Moreover, the magnet member 8 can be used to prevent the door panel 4 from colliding and closing due to wind or other reasons after opening, providing a buffering and fixing effect.

[0043] Combined with reference to Figure 1 and Figure 6 As shown, the door panel 4 is slidably arranged at the ventilation opening, or a rotating shaft is vertically arranged at the ventilation opening 601. The two ends of the rotating shaft are respectively connected to the inner wall of the ventilation opening 601, and one end of the door panel 4 away from the connecting end is rotatably connected to the rotating shaft.

[0044] In this embodiment, the optimal way is that the door panel 4 is slidably arranged in the vertical direction. In addition, the door panel 4 can also be opened and closed in the left - right direction. A rotating shaft is arranged at the ventilation opening 601. One end of the door panel 4 away from the connecting end is rotatably connected to the rotating shaft, and a magnet member 8 is arranged at the connecting end of the door panel 4. The magnet member 8 extends in the height direction of the door panel 4. The electromagnet is arranged on the side wall of the ventilation opening 601 and extends along the height direction of the ventilation opening 601. And in order to ensure that the door panel 4 can be opened, a resilient member, such as a spring hinge, is arranged on the door panel 4. When the electromagnet is energized, the electromagnet attracts the magnet member 8, thus closing the ventilation opening 601 with the door panel 4. When the electromagnet is de - energized, under the action of the spring hinge, the door panel 4 can automatically open.

[0045] Refer to the combination of Figure 1 and Figure 6 As shown, the door panel 4 is slidably arranged in the vertical direction. The driving member 5 is arranged on the partition 6. The magnet member 8 is arranged at the top end of the door panel 4, and the driving member 5 is arranged opposite to the magnet member 8.

[0046] Specifically, in order to make the suction force of the electromagnet act more directly on the magnet member 8, the driving member 5 is arranged on the partition 6, the magnet member 8 is arranged at the top end of the door panel 4, and the magnetism of the electromagnet can be controlled by the on - off of the current, so that the opening and closing operation of the door panel 4 can be precisely controlled through the attraction and release of the electromagnet. When the electromagnet is energized, the generated magnetic field will attract the magnet member 8 at the top end of the door panel 4, causing the door panel 4 to close the ventilation opening 601; when de - energized, the magnetic field disappears, and the door panel 4 opens the ventilation opening 601 under the action of gravity. The door panel 4 can either be a folding plate in the form of a lily leaf or there is a fixed plate arranged at the ventilation opening 601, and the door panel 4 can slide in the up - down direction. In this way, when the door panel 4 slides to the uppermost position, the door panel 4 and the fixed plate are staggered in the vertical direction, and the ventilation opening 601 can also be closed.

[0047] In this embodiment, due to the fast response characteristic of the electromagnetic action, the opening and closing actions of the door panel 4 can be quickly completed, which is crucial for a system that needs to quickly respond to the refrigerant leakage situation. When refrigerant leaks, the system can quickly cut off the ventilation opening 601 to prevent the refrigerant from further leaking into the indoor environment and protect the health and safety of indoor personnel. Moreover, the iron member is arranged at the top end of the door panel 4, opposite to the electromagnet on the partition 6. Such a layout makes the whole structure more compact and saves space.

[0048] Refer to the combination of Figure 1 and Figure 6 As shown, guide rails 9 are respectively arranged on both sides of the ventilation opening 601. The guide rails 9 extend along the height direction of the ventilation opening 601, and the door panel 4 is connected to the guide rails 9.

[0049] In this embodiment, the door panel 4 slides along the guide rail 9. The guide rail 9 provides a stable path, enabling the door panel 4 to slide smoothly and stably along the height direction of the ventilation opening 601 during the opening and closing processes. This helps reduce wear and noise caused by the shaking or deviation of the door panel 4. Moreover, the guide rail 9 limits the movement range of the door panel 4, ensuring that the door panel 4 moves within the designed path, preventing the door panel 4 from accidentally falling off or deviating from the track, and increasing the safety of use. And through the guidance of the guide rail 9, the sliding of the door panel 4 is smoother, thereby improving the efficiency of opening and closing the door panel 4, ensuring that the door panel 4 maintains the correct position and angle when opening and closing, and ensuring the sealing performance of the ventilation opening 601.

[0050] Referring to Figures 1 to 4 As shown, at least two gas sensors 7 are provided in the first chamber 101.

[0051] Specifically, the refrigerant does not only accumulate at the bottom. The behavior of the refrigerant after leakage in the air conditioner also depends on the leakage location and environmental conditions. The refrigerant usually exists in a gaseous or liquid state, and its density is similar to that of air. After the refrigerant leaks, a local high-concentration area may form near the leakage point, but then it will quickly disperse due to air flow. In the initial stage of leakage, due to the volatility of the refrigerant, it will quickly change from a liquid state to a gaseous state and mix with the indoor air, and thus be sent into the room as the indoor unit 2 operates.

[0052] In this embodiment, by providing multiple gas sensors 7, the redundancy of detection can be increased to ensure that at least one sensor can accurately detect the refrigerant leakage. This multiple detection mechanism helps improve the reliability and accuracy of the system. Moreover, multiple sensors can monitor the gas concentration in different areas of the first chamber 101, thus covering the entire chamber more comprehensively, reducing the monitoring dead angle, significantly improving the performance of the rooftop unit in gas detection, and enhancing the safety and reliability of the system.

[0053] Referring to Figure 1 and Figure 2 As shown, the indoor unit 2 includes an evaporator 10. One gas sensor 7 is provided on the evaporator 10, and another gas sensor 7 is provided on the partition plate 6.

[0054] In this embodiment, there are many weld joints on the evaporator 10. Especially for a newly installed air conditioner, if the welding technology is not good, it is easy to cause problems such as clamped welds, slag inclusions, and roughness at the weld joints, resulting in leakage. Therefore, two gas sensors 7 are provided in this embodiment. The gas sensor 7 on the evaporator 10 can monitor the gas environment around the evaporator 10 in real time. Since the evaporator 10 is a key component of the indoor unit 2 and usually has a relatively low temperature, it is easy to condense pollutants and moisture in the air. Therefore, the sensor at this position is very sensitive to detecting refrigerant leakage or changes in air quality. The gas sensor 7 provided on the partition 6 can monitor the overall air quality of the first chamber 101 because the position on the partition 6 can better capture the gas entering from the outdoor unit 3 through the ventilation opening 601, so as to more comprehensively monitor refrigerant leakage.

[0055] In this embodiment, by setting gas sensors 7 at different positions, the system can more accurately determine the location and severity of gas leakage, and thus take corresponding measures to open the door panel 4 to release the refrigerant as soon as possible.

[0056] Combined with reference to Figure 1 and Figure 6 As shown, the driving member 5 is a motor, and the output end of the motor is connected to the connecting end.

[0057] In this embodiment, in addition to being able to use an electromagnet, the driving member 5 can also be a motor. A clamping block is provided on the output shaft of the motor. The door panel 4 driven by the motor can achieve automatic control. By connecting to the control system, the motor can automatically open or close the door panel 4 according to the signal of the gas sensor 7 without manual intervention.

[0058] Combined with reference to Figures 1 to 6 As shown, the outdoor unit 3 includes an axial flow fan 11, and at least two axial flow fans 11 are provided in the second chamber 102.

[0059] Specifically, the first chamber 101 circulates and cools or heats the air in the usage place through the inner air outlet and the inner air return opening; the second chamber 102 compresses and discharges the outdoor air through the outer air blowing opening and the outer air return opening. When the refrigerant leaks in the indoor unit 2, the refrigerant is released into the first chamber 101. The gas sensor 7 will identify the refrigerant leakage signal and cut off the power supply of the indoor unit 2 to prevent the leaked refrigerant from being discharged into the indoor room through the indoor unit 2. At this time, the driving member 5 is disconnected from the door panel 4, and the door panel 4 slides downward due to its own gravity, opening the ventilation opening 601 reserved between the indoor unit 2 and the outdoor chamber. At this time, the outdoor unit 3 still operates normally, and the axial flow fan 11 sucks the leaked refrigerant in the first chamber 101 through the ventilation opening 601 into the second chamber 102 and discharges it outdoors. When the staff arrives at the scene to detect and repair the rooftop unit air conditioner, the indoor unit 2 resumes operation. The driving member 5 is connected to the door panel 4 again, and the driving member 5 drives the door panel 4 to slide to close the ventilation opening 601, and the first chamber 101 and the second chamber 102 are restored to two isolated and enclosed spaces, and the rooftop unit operates normally.

[0060] In this embodiment, the ventilation opening 601 on the partition 6 allows air to flow between the first chamber 101 and the second chamber 102, which helps with refrigerant circulation and heat exchange. The door panel 4 is slidably arranged at the ventilation opening 601 and is controlled to open and close by the driving member 5. The combined use of multiple axial flow fans 11 can generate a greater air volume and pressure, which is crucial for maintaining the stability and efficiency of the air conditioning system under different environmental conditions, significantly improving the heat dissipation efficiency, reliability and adaptability of the rooftop unit. The negative pressure generated during the rotation of the axial flow fan 11 causes the refrigerant to be discharged from the housing 1 as soon as possible. The setting of the rooftop unit in this embodiment realizes the temperature control of the indoor environment and the automatic response to refrigerant leakage through the coordinated work of the indoor unit 2, the outdoor unit 3, the gas sensor 7, the driving member 5 and the door panel 4, improving the safety and efficiency of the air conditioning system.

[0061] It is easy for those skilled in the art to understand that, without conflict, the above-mentioned advantageous ways can be freely combined and superimposed.

[0062] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A rooftop unit, characterized in that, Comprising: A housing (1), an indoor unit (2), an outdoor unit (3), a door panel (4), and a driving member (5); A partition (6) is provided in the housing (1), the partition (6) divides the housing (1) into a first chamber (101) and a second chamber (102), the indoor unit (2) is disposed in the first chamber (101), a gas sensor (7) is provided in the first chamber (101), the outdoor unit (3) is disposed in the second chamber (102), and a ventilation opening (601) is formed in the partition (6); The driving member (5) is provided in the housing (1), the door panel (4) has a connecting end, the driving member (5) is connected or disconnected from the connecting end, and the door panel (4) is configured to close or open the ventilation opening (601) according to the refrigerant leakage situation.

2. The rooftop unit according to claim 1, characterized in that, The driving member (5) is an electromagnet.

3. The rooftop unit according to claim 2, characterized in that, A magnet member (8) is provided at the connecting end, and the magnet member (8) extends in the width direction of the door panel (4).

4. The rooftop unit according to claim 3, characterized in that, The door panel (4) is slidably disposed in the vertical direction, the driving member (5) is provided on the partition (6), the magnet member (8) is provided at the top of the door panel (4), and the driving member (5) is disposed opposite to the magnet member (8).

5. The rooftop unit according to claim 1, characterized in that, Guide rails (9) are respectively provided on both sides of the ventilation opening (601), the guide rails (9) extend in the height direction of the ventilation opening (601), and the door panel (4) is connected to the guide rails (9).

6. The rooftop unit according to claim 1, characterized in that, At least two of the gas sensors (7) are provided in the first chamber (101).

7. The rooftop unit according to claim 6, characterized in that, The indoor unit (2) includes an evaporator (10), one of the gas sensors (7) is provided on the evaporator (10), and the other gas sensor (7) is provided on the partition (6).

8. The rooftop unit according to claim 1, wherein, The driving member (5) is a motor, and the output end of the motor is connected to the connecting end.

9. The roof unit according to claim 1, wherein The door panel (4) is slidably disposed at the ventilation opening (601), or a vertically disposed rotating shaft is provided at the ventilation opening (601), both ends of the rotating shaft are respectively connected to the inner walls of the ventilation opening (601), and one end of the door panel (4) away from the connecting end is rotatably connected to the rotating shaft.

10. The rooftop unit according to any one of claims 1 to 9, characterized in that, The outdoor unit (3) includes an axial flow fan (11), and at least two of the axial flow fans (11) are provided in the second chamber (102).

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