Roof machine

Abstract

The utility model relates to a kind of roof machine, and the roof machine includes shell, partition, outdoor fan, indoor heat exchanger and indoor fan;Partition divides the shell into outdoor chamber and indoor chamber inside part. Outdoor air inlet, outdoor air outlet, indoor air outlet and indoor return air inlet are equipped on the outer wall of shell;Indoor chamber is equipped with ventilation pipe, ventilation pipe one end is communicated indoor return air inlet, and the other end is connected with partition;First air port is equipped on the lateral wall of ventilation pipe, second air port is equipped on the partition;First air valve is equipped at first air port, and second air valve is equipped at second air port;When first air valve opens and second air valve closes, indoor fan can extract house air by first air port, ventilation pipe, indoor return air inlet, after heat exchange with indoor heat exchanger, again by indoor air outlet is transported to house;When first air valve closes and second air valve opens, outdoor fan can extract house air by second air port, ventilation pipe, indoor return air inlet, again by outdoor air outlet is discharged to the outside of shell.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a rooftop unit. Background Technology

[0002] A rooftop unit is a type of integrated air conditioner. Rooftop units are typically installed in gardens or on rooftops.

[0003] A rooftop air conditioner typically includes a casing and, within that casing, a compressor, an outdoor heat exchanger, an indoor heat exchanger, an outdoor fan, an indoor fan, and a control box. The compressor, outdoor heat exchanger, and outdoor fan are usually located in the outdoor space within the casing. The indoor heat exchanger, indoor fan, and control box are usually located in the indoor space within the casing.

[0004] In rooftop air conditioners, treated air is typically delivered into the indoor space through ducts to improve indoor air quality. However, they cannot exhaust polluted indoor air to the outside. A separate exhaust duct and fan are required to exhaust polluted indoor air to the outside, resulting in a complex structure and higher costs. Utility Model Content

[0005] The purpose of this invention is to provide a rooftop unit to solve the problem of indoor air exhaust.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: According to one aspect of the present invention, a roofing unit is provided, comprising: a housing forming the outer shell of the roofing unit; a partition disposed within the housing, dividing the interior of the housing into an outdoor chamber and an indoor chamber; an outdoor fan disposed in the outdoor chamber; an indoor heat exchanger disposed in the indoor chamber; and an indoor fan disposed in the indoor chamber. The outer wall of the housing has an outdoor air inlet and an outdoor air outlet respectively communicating with the outdoor chamber, and the outer wall of the housing has an indoor air outlet and an indoor air return outlet respectively communicating with the indoor chamber. A ventilation duct is provided in the indoor chamber, one end of the ventilation duct communicating with the indoor air return outlet, and the other end of the ventilation duct connected to the partition. A connection is provided on the side wall of the ventilation duct to the outdoor chamber. The indoor chamber and the ventilation duct have a first air outlet, and the partition has a second air outlet connecting the outdoor chamber and the ventilation duct. A first air valve is provided at the first air outlet for opening and closing the first air outlet. A second air valve is provided at the second air outlet for opening and closing the second air outlet. When the first air valve is open and the second air valve is closed, the indoor fan can draw indoor air into the indoor chamber through the first air outlet, the ventilation duct, and the indoor return air inlet, exchange heat with the indoor heat exchanger, and then deliver it to the indoor environment through the indoor air outlet. When the first air valve is closed and the second air valve is open, the outdoor fan can draw indoor air into the outdoor chamber through the second air outlet, the ventilation duct, and the indoor return air inlet, and then discharge it to the outside of the casing through the outdoor air outlet.

[0007] The above-mentioned technical solution has the following advantages or beneficial effects: A ventilation duct is installed between the partition and the indoor return air vent. The side wall of the ventilation duct is provided with a first air vent connecting the indoor cavity and the inside of the ventilation duct. The partition is provided with a second air vent connecting the outdoor cavity and the inside of the ventilation duct. The first air vent is opened and closed in conjunction with the second air vent. When the first air vent is open and the second air vent is closed, indoor air can be discharged into the indoor cavity through the indoor return air vent, the ventilation duct, and the first air vent. After heat exchange by the indoor heat exchanger, it is then delivered to the indoor space through the indoor air outlet, realizing the temperature regulation function of indoor cooling and heating. When the first air vent is closed and the second air vent is open, stale indoor air can be discharged into the outdoor cavity through the indoor return air vent, the ventilation duct, and the second air vent, and then discharged to the outside of the casing through the outdoor air outlet, solving the problem of indoor air exhaust and realizing the one-way fresh air function of exhausting air from indoors to outdoors.

[0008] In some embodiments of this application, a third air vent is provided on the outer wall of the housing, which connects the inner cavity and the outer space of the housing; a third air valve is provided at the third air vent, which is used to open and close the third air vent.

[0009] The above-mentioned technical solution has the following advantages or beneficial effects: by opening the third air vent through the third air valve, the indoor fan can draw fresh air from outside the casing and introduce it into the indoor space inside the casing, and then deliver it to the indoor space through the indoor air outlet, thereby realizing the fresh air function of the indoor space.

[0010] In some embodiments of this application, the rooftop unit includes: a controller disposed within the housing; the controller is connected to the first air valve and the third air valve respectively, and the controller is capable of controlling the opening degree of the first air valve and the third air valve respectively.

[0011] The above-mentioned technical solution has the following advantages or beneficial effects: the controller can control the opening or closing of the first air valve and the third air valve respectively, and the controller can also control the opening degree of the first air valve and the third air valve respectively, so as to realize multiple working modes of the roof machine.

[0012] In some embodiments of this application, a first temperature sensor is provided on the outer wall of the housing, which is used to detect the ambient temperature of the space outside the housing; a second temperature sensor is provided at the indoor return air vent, which is used to detect the air temperature at the indoor return air vent; the first temperature sensor and the second temperature sensor are respectively connected to the controller signal.

[0013] The above-mentioned technical solution has the following advantages or beneficial effects: The controller can obtain the indoor temperature and ambient temperature from the first and second temperature sensors, and then control the opening of the first and third air dampers. Based on the indoor-outdoor temperature difference, it dynamically judges the beneficialness of outdoor fresh air and adjusts the ratio of fresh air intake to compressor cooling capacity to achieve energy-saving cooling mode or hybrid cooling mode. By precisely controlling the ratio of fresh air intake to compressor cooling capacity, it can maximize the energy-saving potential of outdoor fresh air while ensuring indoor comfort and air quality, significantly reduce compressor running time, save energy, achieve optimal air temperature control, and meet the requirements of energy saving and fresh air effects.

[0014] In some embodiments of this application, the controller is connected to the second air valve, and the controller can control the second air valve to open and close the second air outlet, and the controller can control the opening degree of the second air valve.

[0015] The above technical solution has the following advantages or beneficial effects: the controller can control the opening or closing of the second air outlet by controlling the second air valve, and the controller can also control the opening degree of the second air valve to realize the roof unit exhaust mode or unidirectional fresh air mode.

[0016] In some embodiments of this application, the indoor heat exchanger divides the indoor chamber into a first space and a second space; the indoor fan is located in the first space; the ventilation duct is located in the second space; and the third air outlet is located on the outer wall of the casing corresponding to the second space.

[0017] The above-mentioned technical solution has the following advantages or beneficial effects: when the third air vent is opened and the indoor fan is running, the fresh air outside the casing can enter the second space through the third air vent, flow through the indoor heat exchanger, and then enter the indoor space through the indoor air outlet.

[0018] In some embodiments of this application, the ventilation duct is arranged at an interval from the indoor heat exchanger, and the first air outlet is located on the side wall of the ventilation duct facing the indoor heat exchanger.

[0019] The above-mentioned technical solution has the following advantages or beneficial effects: the first air outlet is located on the side wall of the ventilation duct facing the indoor heat exchanger. When the first air outlet is opened and the indoor fan is running, the air force of the indoor fan can easily form a negative pressure at the first air outlet, and then draw air from the indoor space through the ventilation duct and the indoor return air outlet.

[0020] In some embodiments of this application, the third air vent is located on the side wall of the second space away from the indoor heat exchanger.

[0021] The above-mentioned technical solution has the following advantages or beneficial effects: by setting the third air vent on the side wall of the second space away from the indoor heat exchanger, when the third air vent is opened and the indoor fan is running, the air force of the indoor fan can easily form a negative pressure at the third air vent, thereby drawing air from the outdoor space through the third air vent.

[0022] In some embodiments of this application, the air intake end of the indoor fan is arranged facing the indoor heat exchanger, and the air exhaust end of the indoor fan is connected to the indoor air outlet.

[0023] The above-mentioned technical solution has the following advantages or beneficial effects: When the indoor fan is running, the indoor fan can introduce indoor air into the indoor cavity of the casing through the indoor return air inlet, and perform forced heat exchange with the indoor heat exchanger. The air after heat exchange is discharged outside the casing through the indoor air outlet, and then transported to the indoor space through the pipeline.

[0024] In some embodiments of this application, the rooftop unit includes: an outdoor heat exchanger disposed in the outdoor chamber; a compressor disposed in the outdoor chamber; an outdoor fan arranged opposite to the outdoor air outlet; and the compressor, the outdoor heat exchanger, and the indoor heat exchanger connected in sequence to form a refrigerant circulation loop.

[0025] The above-mentioned technical solution has the following advantages or beneficial effects: A refrigerant circulation loop is formed by sequentially connecting the compressor, outdoor heat exchanger, and indoor heat exchanger. The refrigerant circulates within this loop. During the refrigerant circulation process, the outdoor and indoor heat exchangers can function as condensers and evaporators, respectively, allowing the refrigerant to absorb heat through evaporation in the evaporator and release heat through condensation in the condenser, thus enabling the rooftop unit to perform either a cooling or heating cycle. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of a roofing machine according to some embodiments of the present invention.

[0027] Figure 2 yes Figure 1 A structural diagram from another perspective.

[0028] Figure 3 yes Figure 1 A schematic diagram of some of the internal structures.

[0029] Figure 4 yes Figure 3 Top view.

[0030] Figure 5 yes Figure 3 A side view.

[0031] Figure 6 yes Figure 3 Another side view.

[0032] Figure 7 yes Figure 4 A schematic diagram of the structure of the central ventilation duct, the first air valve, the second air valve, and the third air valve.

[0033] Figure 8 yes Figure 7 A structural diagram from another perspective.

[0034] Figure 9 yes Figure 8 A schematic diagram of the structure of the first, second, and third air valves.

[0035] Figure 10 This is a control principle diagram of a roofing machine according to some embodiments of this utility model.

[0036] The reference numerals in the attached drawings are explained as follows: 1. Housing; 110. Outdoor chamber; 120. Indoor chamber; 1201. First space; 1202. Second space; 11. Partition; 111. Second air vent; 112. Second air valve; 12. Outdoor air inlet; 13. Outdoor air outlet; 14. Indoor air outlet; 15. Indoor return air vent; 16. Third air vent; 161. Third air valve; 17. First temperature sensor; 18. Second temperature sensor; 2. Outdoor heat exchanger; 3. Indoor heat exchanger; 4. Compressor; 5. Outdoor fan; 6. Indoor fan; 7. Control box; 71. Controller; 8. Ventilation duct; 80. Ventilation channel; 81. First air vent; 811. First air valve. Detailed Implementation

[0037] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] Figure 1 This is a structural schematic diagram of a roofing machine according to some embodiments of the present invention. Figure 2 yes Figure 1 A structural diagram from another perspective.

[0042] like Figure 1 and Figure 2 As shown, some embodiments of this application provide a roofing machine that may include a housing 1, which may form the outer shell of the roofing machine. The interior of the housing 1 may be used to provide installation space.

[0043] Figure 3 yes Figure 1 A schematic diagram of some of the internal structures.

[0044] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the rooftop unit may include an outdoor heat exchanger 2, which may be housed within the casing 1. The outdoor heat exchanger 2 is used for heat exchange with outdoor air.

[0045] In some embodiments, the rooftop unit may include an indoor heat exchanger 3, which may be disposed within the housing 1. The indoor heat exchanger 3 is used to exchange heat with indoor air to achieve heating or cooling of the indoor air.

[0046] Figure 4 yes Figure 3 Top view.

[0047] like Figure 3 and Figure 4 As shown, in some embodiments, the rooftop unit may include a compressor 4, which is sequentially connected to an outdoor heat exchanger 2 and an indoor heat exchanger 3 to form a refrigerant circulation loop. The refrigerant circulates within this loop. During the refrigerant circulation, the outdoor heat exchanger 2 and the indoor heat exchanger 3 can function as a condenser and an evaporator, respectively, allowing the refrigerant to absorb heat through evaporation in the evaporator and release heat through condensation in the condenser, thus executing either a cooling or heating cycle for the rooftop unit. Specifically, during the cooling cycle, the outdoor heat exchanger 2 can act as a condenser, and the indoor heat exchanger 3 can act as an evaporator. During the heating cycle, the outdoor heat exchanger 2 can act as an evaporator, and the indoor heat exchanger 3 can act as a condenser.

[0048] like Figure 3 and Figure 4As shown, in some embodiments, a partition 11 may be provided inside the housing 1, dividing the space inside the housing 1 into an outdoor chamber 110 and an indoor chamber 120. The outdoor chamber 110 is used to connect to the outdoor space. The indoor chamber 120 is used to connect to the indoor space. The compressor 4 and the outdoor heat exchanger 2 may be located in the outdoor chamber 110. The indoor heat exchanger 3 may be located in the indoor chamber 120.

[0049] like Figure 1 and Figure 2 As shown, in some embodiments, an outdoor air inlet 12 is provided on the outer wall of the casing 1, and the outdoor air inlet 12 can be located on the peripheral side wall of the casing 1. The outdoor air inlet 12 can connect the outdoor chamber 110 and the outdoor space outside the casing 1. The outdoor heat exchanger 2 can be arranged opposite to the outdoor air inlet 12. When outdoor air enters the interior of the casing 1 through the outdoor air inlet 12, it can undergo forced heat exchange with the outdoor heat exchanger 2.

[0050] It should be noted that in other embodiments, the outdoor air inlet 12 may also be located in other areas of the outer wall of the housing 1.

[0051] In some embodiments, multiple sets of outdoor air inlets 12 can be provided, and these multiple sets of outdoor air inlets 12 can be provided in the other peripheral sidewalls of the outdoor chamber 110, excluding the partition 11, so that the outdoor air inlets 12 can be provided on three peripheral sidewalls of the casing 1, thereby improving the air intake efficiency of the outdoor chamber 110. The outdoor heat exchanger 2 can be extended and arranged on the inner wall of the corresponding three peripheral sidewalls, thereby improving the heat exchange efficiency of the outdoor heat exchanger 2.

[0052] like Figure 1 and Figure 2 As shown, in some embodiments, an outdoor air outlet 13 is provided on the outer wall of the housing 1, and the outdoor air outlet 13 may be located on the top wall of the housing 1. The outdoor air outlet 13 can connect the outdoor chamber 110 and the outdoor space outside the housing 1. When outdoor air enters the interior of the housing 1 through the outdoor air inlet 12 and undergoes forced heat exchange with the outdoor heat exchanger 2, the heat-exchanged air can be discharged to the outdoor space outside the housing 1 through the outdoor air outlet 13.

[0053] It should be noted that in other embodiments, the outdoor air outlet 13 may also be located in other areas of the outer wall of the housing 1.

[0054] like Figure 1 and Figure 2As shown, in some embodiments, the roof unit may include an outdoor fan 5. The outdoor fan 5 may be located inside the outdoor chamber 110, and may be arranged opposite to the outdoor air outlet 13. The intake side of the outdoor fan 5 may face the interior of the outdoor chamber 110. The outlet side of the outdoor fan 5 may face the exterior of the outdoor air outlet 13, that is, the outlet side of the outdoor fan 5 may face the exterior of the casing 1. When the outdoor fan 5 is running, it can introduce outdoor air into the outdoor chamber 110 of the casing 1 through the outdoor air inlet 12, where it exchanges heat with the outdoor heat exchanger 2. The heat-exchanged air is then discharged outside the casing 1 through the outdoor air outlet 13, and then into the outdoor space.

[0055] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, an indoor air outlet 14 is provided on the outer wall of the casing 1, and the indoor air outlet 14 can be located on the peripheral side wall of the casing 1. The indoor air outlet 14 can connect the indoor chamber 120 and the outside of the casing 1, and the indoor air outlet 14 can be connected to the indoor space through a pipe. After the air in the indoor chamber 120 undergoes forced heat exchange with the outdoor heat exchanger 2, the heat-exchanged air can be discharged into the indoor space outside the casing 1 through the indoor air outlet 14, thereby achieving temperature control of the indoor space.

[0056] It should be noted that in other embodiments, the indoor air outlet 14 may also be located in other areas of the outer wall of the housing 1.

[0057] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, an indoor return air vent 15 is provided on the outer wall of the casing 1, and the indoor return air vent 15 can be located on the peripheral side wall of the casing 1. The indoor return air vent 15 can connect the indoor chamber 120 and the outside of the casing 1, and the outside of the indoor return air vent 15 can be connected to the indoor space through a pipe. The air in the indoor space can return to the indoor chamber 120 inside the casing 1 through the indoor return air vent 15, exchange heat with the indoor heat exchanger 3 again, and then be delivered to the indoor space through the indoor air outlet 14 to realize the indoor air circulation and thus gradually regulate the indoor temperature.

[0058] It should be noted that in other embodiments, the indoor return air vent 15 may also be located in other areas of the outer wall of the casing 1.

[0059] like Figure 1 , Figure 3 and Figure 4As shown, in some embodiments, the rooftop unit may include an indoor fan 6. The indoor fan 6 may be located within the indoor chamber 120 and may be arranged opposite to the indoor air outlet 14. The intake end of the indoor fan 6 may face the indoor heat exchanger 3. The outlet end of the indoor fan 6 may be connected to the indoor air outlet 14, and the outlet side of the indoor fan 6 may face the outside of the casing 1. When the indoor fan 6 is running, it can introduce indoor air into the indoor chamber 120 of the casing 1 through the indoor return air inlet 15, where it undergoes forced heat exchange with the indoor heat exchanger 3. The heat-exchanged air is then discharged outside the casing 1 through the indoor air outlet 14 and subsequently transported to the indoor space through pipelines.

[0060] In some embodiments, the indoor fan 6 may be a turbine fan, which is located between the indoor heat exchanger 3 and the indoor air outlet 14. The intake end of the turbine fan faces the indoor heat exchanger 3, which may be located at the intake end of the turbine fan. The exhaust end of the turbine fan faces the indoor air outlet 14 and is directly connected to it. The turbine fan can provide a large airflow to transport the heat-exchanged air through ducts to indoor spaces at a greater distance.

[0061] like Figure 3 and Figure 4 As shown, in some embodiments, the rooftop unit may include a control box 7, which is located inside the housing 1. The control box 7 may be located inside the indoor chamber 120. The control box 7 may contain a controller 71. The controller 71 may be connected to the outdoor fan 5, the indoor fan 6, and the compressor 4, respectively. The controller 71 may control the operation of the outdoor fan 5, the indoor fan 6, and the compressor 4, respectively.

[0062] Figure 5 yes Figure 3 A side view.

[0063] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, a ventilation duct 8 may be provided in the indoor chamber 120. One end of the ventilation duct 8 is connected to the indoor return air vent 15, and the other end of the ventilation duct 8 is connected to the partition 11. A ventilation channel 80 may be formed inside the ventilation duct 8.

[0064] In some embodiments, a first air vent 81 may be provided on the side wall of the ventilation duct 8, the first air vent 81 connecting the indoor chamber 120 and the ventilation channel 80 inside the ventilation duct 8. In this way, the indoor return air vent 15 can be connected to the indoor chamber 120 through the ventilation channel 80 inside the ventilation duct 8 and the first air vent 81 on the side wall of the ventilation duct 8.

[0065] In some embodiments, a second air vent 111 may be provided on the partition 11, the second air vent 111 being arranged opposite to the ventilation duct 8, the ventilation duct 8 connecting the outdoor chamber 110 and the ventilation channel 80 inside the ventilation duct 8. In this way, the indoor return air vent 15 can communicate with the outdoor chamber 110 through the ventilation channel 80 inside the ventilation duct 8 and the second air vent 111 on the partition 11.

[0066] In some embodiments, the indoor return air vent 15 may be located on the outer side wall of the housing 1, spaced apart from the partition 11. The indoor return air vent 15 and the second air vent 111 may be located on opposite sides of the indoor chamber 120. This allows the ventilation duct 8 to be a straight pipe structure, thereby improving the ventilation efficiency within the ventilation duct 8.

[0067] Figure 6 yes Figure 3 Another side view. Figure 7 yes Figure 4 A schematic diagram of the structure of the central ventilation duct 8, the first air valve 811, the second air valve 112 and the third air valve 161.

[0068] like Figure 4 , Figure 5 and Figure 7 As shown, in some embodiments, a first air valve 811 is provided at the first air outlet 81, and the first air valve 811 is used to open and close the first air outlet 81. The first air valve 811 can control the opening and closing of the first air outlet 81. In addition, the first air valve 811 can also control the opening degree, thereby controlling the air intake of the first air outlet 81.

[0069] In some embodiments, a second air valve 112 is provided at the second air outlet 111, and the second air valve 112 is used to open and close the second air outlet 111. The second air valve 112 can control the opening and closing of the second air outlet 111. In addition, the second air valve 112 can also control the opening degree, thereby controlling the air intake of the second air outlet 111.

[0070] When the first air valve 811 opens the first air outlet 81 and the second air valve 112 closes the second air outlet 111, the ventilation duct 8 connects to the indoor chamber 120 through the first air outlet 81, and the ventilation duct 8 is isolated from the outdoor space. At this time, the indoor fan 6 starts running, and the indoor fan 6 can draw indoor air into the indoor chamber 120 through the first air outlet 81, the ventilation duct 8, and the indoor return air outlet 15. After exchanging heat with the indoor heat exchanger 3, the air is then delivered to the indoor space through the indoor air outlet 14, thereby realizing the cooling or heating circulation of indoor air and achieving normal temperature regulation of the indoor space.

[0071] When the first air valve 811 closes the first air outlet 81 and the second air valve 112 opens the second air outlet 111, the ventilation duct 8 connects to the outdoor chamber 110 through the second air outlet 111, and the ventilation duct 8 is isolated from the indoor space. At this time, the outdoor fan 5 starts running, and the outdoor fan 5 can draw indoor air into the outdoor chamber 110 through the second air outlet 111, the ventilation duct 8, and the indoor return air outlet 15, and then exhaust it to the outdoor space outside the casing 1 through the outdoor air outlet 13, thereby expelling the polluted air from the indoor space and realizing the one-way fresh air function of the indoor space.

[0072] Thus, a ventilation duct 8 is installed between the partition 11 and the indoor return air vent 15. The side wall of the ventilation duct 8 has a first air vent 81 connecting the indoor chamber 120 and the interior of the ventilation duct 8. The partition 11 has a second air vent 111 connecting the outdoor chamber 110 and the interior of the ventilation duct 8. The first air vent 81 is opened and closed by a first air valve 811, and the second air vent 111 is opened and closed by a second air valve 112. When the first air valve 811 is open and the second air valve 112 is closed, the indoor cooling and heating temperature regulation functions are realized. When the first air valve 811 is closed and the second air valve 112 is open, the indoor stale air is exhausted into the outdoor chamber 110, and then discharged to the outside of the casing 1 through the outdoor air outlet 13, solving the problem of indoor air exhaust and realizing a one-way fresh air function from indoor to outdoor. This solution eliminates the need for a separate exhaust duct and exhaust fan, effectively exhausting stale air from the indoor space to the outdoor space, simplifying the structure and reducing costs.

[0073] Figure 8 yes Figure 7 A structural diagram from another perspective.

[0074] like Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, in some embodiments, a third air vent 16 may be provided on the outer wall of the housing 1, connecting the indoor chamber 120 and the external space of the housing 1. A third air valve 161 is provided at the third air vent 16, which is used to open and close the third air vent 16. The third air valve 161 can control the opening and closing of the third air vent 16. In addition, the third air valve 161 can also control the opening degree, thereby controlling the air intake of the third air vent 16. When the third air valve 161 opens the third air vent 16, the indoor fan 6 can draw fresh air from outside the housing 1 through the third air vent 16 and introduce it into the indoor space of the housing 1, and then deliver it to the room through the indoor air outlet 14, realizing the fresh air function of the room.

[0075] Figure 9 yes Figure 8 A schematic diagram of the structure of the first air valve 811, the second air valve 112, and the third air valve 161. Figure 10This is a control principle diagram of a roofing machine according to some embodiments of this utility model.

[0076] like Figure 4 , Figure 9 and Figure 10 As shown, in some embodiments, the controller 71 can be connected to the first air valve 811, the second air valve 112 and the third air valve 161 respectively. The controller 71 can control the opening or closing of the first air valve 811, the second air valve 112 and the third air valve 161 respectively. The controller 71 can also control the opening degree of the first air valve 811, the second air valve 112 and the third air valve 161 respectively.

[0077] The first air valve 811, the second air valve 112 and the third air valve 161 are controlled by the controller 71. In conjunction with the compressor 4, the indoor heat exchanger 3 and the outdoor heat exchanger 2, the rooftop unit can achieve multiple working modes.

[0078] For example, when the controller 71 controls the second air valve 112 and the third air valve 161 to close and controls the first air valve 811 to open completely, the compressor 4 can be started to realize the compressor heating mode or compressor cooling mode of the roof unit respectively, so as to meet the heating or cooling needs of the indoor space.

[0079] For example, when the outdoor temperature is lower than the indoor temperature, the controller 71 can control the second air valve 112 to close and the first air valve 811 and the third air valve 161 to open. The indoor fan 6 can draw in cold air from outside through the third air vent 16 and introduce it into the indoor cavity 120, and draw in indoor air through the first air vent 81 and the indoor return air vent 15. After the cold air from outside and the indoor air are mixed in the indoor cavity 120, the indoor air is cooled down.

[0080] If the outdoor temperature is lower than the user-set temperature, compressor 4 can remain off, relying solely on the low-temperature outdoor air to cool the indoor air, achieving energy-saving cooling. In this case, the rooftop unit is in energy-saving cooling mode.

[0081] If the outdoor temperature is higher than the user-set temperature, the compressor 4 can be turned on. The cold air outside and the indoor air mix in the indoor chamber 120. The temperature of the mixed air is higher than the user-set temperature. The mixed air can then exchange heat with the indoor heat exchanger 3 to cool down and meet the cooling needs of the indoor space. At this time, the compressor 4 can run at a low frequency to assist in cooling. At this time, the roof unit is in mixed cooling mode.

[0082] For example, when the controller 71 controls the first air valve 811 and the third air valve 161 to close and the second air valve 112 to open, the outdoor fan 5 is started. This can create a pressure difference between the second air outlet 111 and the indoor return air outlet 15, allowing indoor air to enter the outdoor chamber 110 through the indoor return air outlet 15, the ventilation pipe 8, and the second air outlet 111, and then be discharged to the outside of the casing 1 through the outdoor air outlet 13, thus expelling the polluted indoor air from the outside. At this time, the roof unit is in exhaust mode or unidirectional fresh air mode.

[0083] For example, when the controller 71 controls the first air valve 811 to close and the second air valve 112 and the third air valve 161 to open, the indoor fan 6 is started. Fresh air is drawn from outside the casing 1 through the third air vent 16 and delivered into the indoor space through the indoor air outlet 14. The indoor air is then allowed to enter the outdoor chamber 110 through the indoor return air vent 15, the ventilation duct 8, and the second air vent 111, and is discharged to the outside of the casing 1 through the outdoor air outlet 13. This introduces fresh air into the indoor space and simultaneously exhausts stale air from the indoor space. At this time, the rooftop unit is in a fresh air and exhaust mixed mode, which can improve the efficiency of indoor fresh air exchange and exhaust.

[0084] like Figure 1 and Figure 10 As shown, in some embodiments, a first temperature sensor 17 is provided on the outer wall of the casing 1 to detect the ambient temperature of the space outside the casing 1. A second temperature sensor 18 is provided at the indoor return air vent 15 to detect the air temperature at the indoor return air vent 15, thereby detecting the indoor air temperature. The first temperature sensor 17 and the second temperature sensor 18 are respectively connected to the controller 71. Thus, the controller 71 can obtain the indoor temperature and ambient temperature based on the first temperature sensor 17 and the second temperature sensor 18, and then control the opening of the first air valve 811 and the third air valve 161. Based on the indoor and outdoor temperature difference, the controller dynamically judges the benefit of outdoor fresh air and adjusts the ratio of fresh air intake to the cooling capacity of the compressor 4 to achieve an energy-saving cooling mode or a hybrid cooling mode. By precisely controlling the ratio of fresh air intake to the cooling capacity of the compressor 4, the energy-saving potential of outdoor fresh air can be maximized while ensuring indoor comfort and air quality, significantly reducing the compressor 4 running time, saving energy, achieving optimal air temperature control, and satisfying energy saving and fresh air effects.

[0085] In related technologies, the fresh air module or economizer module needs to be installed separately into the whole unit to achieve energy saving and fresh air effects, which is relatively complex and costly. This solution, through the ventilation duct 8 and the first air valve 811, second air valve 112, and third air valve 161, can control the opening logic of the first air valve 811, second air valve 112, and third air valve 161 according to the set temperature, outdoor temperature, and return air temperature, achieving optimal air temperature control and satisfying energy saving and fresh air effects.

[0086] It should be noted that in other embodiments, the second temperature sensor 18 may also be located inside the ventilation duct 8, or in other locations on the housing 1, or in the indoor space.

[0087] like Figure 3 and Figure 4 As shown, in some embodiments, the indoor heat exchanger 3 is connected to the inner wall of the indoor chamber 120 to divide the indoor chamber 120 into a first space 1201 and a second space 1202. An indoor fan 6 can be located in the first space 1201. An indoor air outlet 14 can be located on the outer wall of the casing 1 corresponding to the first space 1201. A ventilation duct 8 can be located in the second space 1202. An indoor return air outlet 15 and a third air outlet 16 can be located on the outer wall of the casing 1 corresponding to the second space 1202. When the third air outlet 16 is open and the indoor fan 6 is running, fresh air from outside the casing 1 can enter the second space 1202 through the third air outlet 16, flow through the indoor heat exchanger 3, and then enter the indoor space through the indoor air outlet 14. If the compressor 4 is running at this time, the fresh air entering the second space 1202 through the third air outlet 16 can undergo forced heat exchange with the indoor heat exchanger 3. If the compressor 4 is not running, the fresh air entering the second space 1202 through the third air vent 16 will flow through the indoor heat exchanger 3.

[0088] In some embodiments, the indoor chamber 120 may be provided with a partition rib, which is connected to the indoor heat exchanger 3, thereby dividing the indoor chamber 120 into a first space 1201 and a second space 1202 through the indoor heat exchanger 3.

[0089] like Figure 3 and Figure 4 As shown, in some embodiments, the ventilation duct 8 and the indoor heat exchanger 3 are arranged at intervals, and the first air outlet 81 can be located on the side wall of the ventilation duct 8 facing the indoor heat exchanger 3. In this way, when the first air outlet 81 is opened and the indoor fan 6 is running, the air force of the indoor fan 6 can easily form a negative pressure at the first air outlet 81, thereby drawing air from the room through the ventilation duct 8 and the indoor return air outlet 15.

[0090] like Figure 3 and Figure 4 As shown, in some embodiments, the third air vent 16 may be located on the side wall of the second space 1202 away from the indoor heat exchanger 3. In this way, when the third air vent 16 is opened and the indoor fan 6 is running, the airflow of the indoor fan 6 can easily create a negative pressure at the third air vent 16, thereby drawing air from the outdoor space through the third air vent 16.

[0091] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A roofing machine, characterized in that, The rooftop unit includes: The housing forms the outer casing of the roofing machine; A partition is disposed inside the housing, which divides the interior of the housing into an outdoor chamber and an indoor chamber; An outdoor fan, wherein the outdoor fan is located in the outdoor chamber; An indoor heat exchanger, wherein the indoor heat exchanger is disposed in the indoor chamber; An indoor fan, wherein the indoor fan is located in the indoor cavity; The outer wall of the housing is provided with an outdoor air inlet and an outdoor air outlet that are respectively connected to the outdoor chamber, and the outer wall of the housing is provided with an indoor air outlet and an indoor air return outlet that are respectively connected to the indoor chamber. The indoor cavity is provided with a ventilation duct, one end of which is connected to the indoor return air vent, and the other end of which is connected to the partition. The side wall of the ventilation duct is provided with a first air vent that connects the indoor cavity and the inside of the ventilation duct, and the partition is provided with a second air vent that connects the outdoor cavity and the inside of the ventilation duct. A first air valve is provided at the first air outlet, and the first air valve is used to open and close the first air outlet. A second air valve is provided at the second air outlet, and the second air valve is used to open and close the second air outlet; When the first air valve is open and the second air valve is closed, the indoor fan can draw indoor air into the indoor chamber through the first air outlet, the ventilation pipe, and the indoor return air outlet, exchange heat with the indoor heat exchanger, and then deliver it to the room through the indoor air outlet. When the first air valve is closed and the second air valve is open, the outdoor fan can draw indoor air into the outdoor chamber through the second air outlet, the ventilation pipe, and the indoor return air outlet, and then discharge it to the outside of the casing through the outdoor air outlet.

2. The roof-mounted machine as described in claim 1, characterized in that, The outer wall of the casing is provided with a third air vent that connects the inner cavity and the outer space of the casing; A third air valve is provided at the third air outlet, and the third air valve is used to open and close the third air outlet.

3. The roofing machine as described in claim 2, characterized in that, The rooftop unit includes: A controller, wherein the controller is disposed within the housing; The controller is connected to the first air valve and the third air valve respectively, and the controller can control the opening degree of the first air valve and the third air valve respectively.

4. The roofing machine as described in claim 3, characterized in that, A first temperature sensor is provided on the outer wall of the housing, and the first temperature sensor is used to detect the ambient temperature of the space outside the housing. A second temperature sensor is provided at the indoor return air vent, and the second temperature sensor is used to detect the air temperature at the indoor return air vent. The first temperature sensor and the second temperature sensor are respectively connected to the controller signal.

5. The roof-mounted machine as described in claim 3, characterized in that, The controller is connected to the second air valve and can control the second air valve to open and close the second air outlet. The controller can also control the opening degree of the second air valve.

6. The roofing machine as described in claim 2, characterized in that, The indoor heat exchanger divides the indoor chamber into a first space and a second space; The indoor fan is located within the first space; The ventilation duct is located in the second space, and the third air outlet is located on the outer wall of the casing corresponding to the second space.

7. The roofing machine as described in claim 6, characterized in that, The ventilation duct is arranged at intervals from the indoor heat exchanger, and the first air outlet is located on the side wall of the ventilation duct facing the indoor heat exchanger.

8. The roof-mounted machine as described in claim 6, characterized in that, The third air vent is located on the side wall of the second space away from the indoor heat exchanger.

9. The roofing machine as described in claim 6, characterized in that, The air intake end of the indoor fan is arranged facing the indoor heat exchanger, and the air exhaust end of the indoor fan is connected to the indoor air outlet.

10. The roofing machine as claimed in claim 1, characterized in that, The rooftop unit includes: An outdoor heat exchanger is provided in the outdoor chamber; The compressor is located in the outdoor chamber; The outdoor fan is arranged opposite to the outdoor air outlet; The compressor, the outdoor heat exchanger, and the indoor heat exchanger are connected in sequence to form a refrigerant circulation loop.

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