Refrigeration type range hood

Abstract

A refrigeration type extractor hood comprises a machine shell and an exhaust fume collecting hood, an oil fume suction fan is installed in the machine shell, the exhaust fume collecting hood is provided with an oil fume suction inlet, a refrigeration system is installed in the machine shell, a heat dissipation air channel is formed in the machine shell, a rotary air outlet plate is installed on the exhaust fume collecting hood, and an air outlet channel is formed in the rotary air outlet plate. And in the starting state, the rotary air outlet plate is overturned upwards to the bottom of the exhaust fume collecting hood to close the oil fume suction inlet, in the starting state, the rotary air outlet plate is overturned downwards to the position below the rear side portion of the exhaust fume collecting hood, the heat dissipation air channel is communicated with the air outlet channel, and an air outlet of the air outlet channel faces upwards. When the refrigeration type range hood is started, heat dissipation airflow is blown out upwards, the Coanda effect is used for adsorbing oil smoke backwards, the front-back depth size of the range hood is reduced, the volume of the range hood is reduced, meanwhile, a smoke baffle does not need to be additionally arranged, heat dissipation is conducted on the condenser in the refrigeration state, and when the refrigeration type range hood is shut down, heat dissipation is achieved. The rotary air outlet plate is turned upwards to the bottom of the exhaust fume collecting hood to close the oil fume suction inlet, the structure is simpler, and cleaning is convenient.

Description

Technical Field

[0001] The invention relates to a range hood, in particular to a refrigeration type range hood. Background Art

[0002] Various refrigeration-type range hoods are disclosed in the prior art. They add air conditioning components on the basis of the range hood platform, which can realize all the functions of the range hood and the function of the air conditioner. When working in the refrigeration mode, the condenser needs to dissipate heat. At present, the condenser is usually placed in the oil fume channel, and the oil fume fan is used to dissipate heat and cool it. Various refrigeration-type range hoods are disclosed in the prior art, such as the "range hood" disclosed in the Chinese utility model patent with patent number 201620118025.6 (authorization announcement number CN205481215U). The range hood sets the condenser in the exhaust chamber. Although the air with oil fume can be purified by the centrifugal fan of the range hood to dissipate the heat of the condenser, the air with oil fume will pollute the surface of the condenser and cause dirty blockage. It is usually necessary to install a purification device at the front end of the condenser. After the purification device is installed, it is easy to cause the exhaust channel to be unsmooth and the noise is high. In addition, the purification device has a high cost and a high failure rate, and requires regular maintenance. Moreover, the purification device often cannot completely remove the oil fume particles in the wind, so when the wind from the fan blows towards the condenser, the condenser may be contaminated by the oil fume, resulting in a decrease in heat dissipation performance caused by dirt and blockage. For example, the Chinese utility model patent No. 202320059220.6 (authorization announcement No. CN 219222570 U) discloses a "refrigeration-type range hood". The heat dissipation cavity of the air-conditioning external unit module of the refrigeration-type range hood is arranged outside the fan frame, and the condenser is arranged in the heat dissipation cavity. The heat of the condenser can enter the range fume exhaust fan through the heat dissipation outlet, and then be taken away by the range fume exhaust fan together with the oil fume. The condenser is arranged outside the exhaust channel, and no purification device is required, so the cost and maintenance rate are reduced. In addition, the heat dissipation fan is installed on the top of the heat dissipation cavity, and the heat dissipation fan is not in the high-temperature hot zone of the external unit module, which greatly guarantees the life of the entire heat dissipation fan assembly, reduces the motor failure rate, and facilitates the maintenance and replacement of the heat dissipation fan. Although the refrigeration-type range hood can use the range hood fan to take away the heat of the condenser, it still needs to use an independent heat dissipation fan to dissipate the heat of the condenser, which has high energy consumption and cost. Moreover, the heat dissipation airflow of the refrigeration-type range hood enters the range hood fan through the ventilation holes on the fan frame, which has little effect on improving the range hood extraction effect. In summary, the existing refrigeration-type range hood needs to be further improved. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a refrigeration range hood that can improve the heat dissipation effect of the condenser and the oil fume extraction effect.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a refrigeration type range hood, comprising a casing and a smoke collecting hood installed at the bottom of the casing, a smoke exhaust fan is installed inside the casing, the smoke collecting hood has a smoke suction port, and a refrigeration system is installed inside the casing, characterized in that: a heat dissipation air duct is provided inside the casing, a rotating air outlet plate is installed on the smoke collecting hood, an air outlet channel is formed inside the rotating air outlet plate, and in the off state, the rotating air outlet plate flips upward to the bottom of the smoke collecting hood to close the smoke suction port, and in the on state, the rotating air outlet plate flips downward to the bottom of the rear side of the smoke collecting hood, the heat dissipation air duct is connected with the air outlet channel, and the air outlet of the air outlet channel faces upward.

[0005] In order to produce an effective wall attachment effect on the rising oil smoke, the air outlet of the air outlet channel faces forward and upward.

[0006] More preferably, the extension surface of the air outlet of the air outlet channel along the air outlet direction intersects with the oil fume suction port, thereby further forming a significant wall attachment effect and further improving the oil fume suction effect.

[0007] In order to avoid using an independent heat dissipation fan, a vertical partition is provided inside the housing, the range fumes fan is provided on the front side of the vertical partition, a heat dissipation fan is provided on the rear side of the vertical partition, the heat dissipation fan has the heat dissipation air duct, and the heat dissipation fan and the range fumes fan rotate synchronously under the drive of the motor. In this way, the range fumes fan and the heat dissipation fan are coaxial and driven by the same motor, and the structure is more compact, simple, and the cost is low.

[0008] In order to allow the wind blown by the cooling fan to smoothly enter the air outlet channel of the rotating air outlet plate, the cooling fan is a centrifugal fan, and a cooling air inlet connected to the air inlet of the cooling fan is opened on the casing. The air outlet of the cooling fan faces downward, and the air outlet of the cooling fan is connected to the air inlet of the air outlet channel through an air guide channel.

[0009] In order to enable the cooling fan to effectively dissipate heat from the condenser, the refrigeration system includes a compressor, a condenser, an evaporator and the cooling fan. The compressor, condenser and evaporator are connected by a refrigerant pipeline. The condenser is arranged on the rear side of the vertical partition and surrounds the cooling fan.

[0010] In order to allow cold air to be blown out from the front of the casing, the refrigeration system also includes an indoor fan. An air-conditioning outlet is opened on the front of the casing, and the outlet of the indoor fan is connected to the air-conditioning outlet.

[0011] Further preferably, the top of the casing has a top plate, the indoor fan and the evaporator are installed above the top plate, the indoor fan is a cross-flow fan, and the evaporator is arranged downstream of the indoor fan along the air flow direction. The indoor fan and the evaporator are externally covered with an indoor outer cover, and the indoor outer cover has an indoor air inlet and an indoor air outlet, and the indoor air outlet is connected to the air outlet of the air conditioner.

[0012] In order to prevent cold air from leaking, an air guide cover is installed above the top plate, and the air outlet of the indoor unit is connected to the air outlet of the air conditioner through the air guide cover.

[0013] The compressor can be installed in a plurality of different positions. Preferably, the compressor is installed above the top plate. When the refrigeration system is working, the compressor will generate noise. Installing the compressor on the top of the range hood can reduce the impact of the noise on the cooker and help improve the cooking experience.

[0014] In order to enable the rotating air outlet plate to rotate, a reduction motor is installed inside the smoke collecting hood, and the reduction motor drives the rotating air outlet plate to rotate through a transmission mechanism.

[0015] There may be many types of transmission mechanisms. Preferably, the transmission mechanism includes a rocker arm and a connecting rod. The first end of the rocker arm is mounted on the output shaft of the reduction motor. The first end of the connecting rod is rotatably connected to the second end of the rocker arm. The second end of the connecting rod is rotatably connected to the rotating air outlet plate. The rotating air outlet plate is also rotatably connected to the smoke hood via a rotating shaft. The transmission mechanism has a simple structure and low cost, and can also realize the normal rotation of the rotating air outlet plate.

[0016] Compared with the prior art, the advantages of the present invention are: a rotating air outlet plate that can rotate relative to the smoke hood is installed on the smoke hood of the refrigeration type range hood. When the machine is on, the rotating air outlet plate flips downward to the bottom of the rear side of the smoke hood, and the heat dissipation duct of the refrigeration system is connected with the air outlet channel of the rotating air outlet plate. Since the air outlet of the air outlet channel faces upward, the heat dissipation air flow blows upward, which can not only utilize the Coanda effect (wall attachment effect) to absorb the smoke backwards, reduce the front and rear depth dimensions of the range hood and reduce the size of the range hood, but also do not need to add a smoke baffle, and can dissipate heat for the condenser in the refrigeration state. In the off state, the rotating air outlet plate flips upward to the bottom of the smoke hood to close the smoke suction port, so the structure is simpler and easier to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a refrigeration-type range hood according to an embodiment of the present invention (in the off state);

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the range hood from another angle;

[0019] Figure 3 for Figure 1 The internal structure diagram of the range hood shown;

[0020] Figure 4 Schematic diagram of the structure of the heat dissipation module and the range hood fan of the range hood of this embodiment;

[0021] Figure 5 for Figure 4 An exploded schematic diagram of the structure shown;

[0022] Figure 6 This is a schematic structural diagram of a refrigeration range hood according to an embodiment of the present invention (when powered on);

[0023] Figure 7 for Figure 6 A schematic diagram of the structure of the range hood from another angle;

[0024] Figure 8 for Figure 7 A structural cross-sectional view of the range hood shown;

[0025] Fig. 9 It is a schematic diagram of the connection of components of a refrigeration system of a refrigeration type range hood extractor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 8 As shown, the refrigeration type range hood of this embodiment comprises a housing 1 and a fume collecting hood 2 installed at the bottom of the housing 1, a range hood fan 3 is installed inside the housing 1, the fume collecting hood 2 has a fume suction port 21, and a refrigeration system 4 is installed inside the housing 1. Fig. 9 As shown, the refrigeration system 4 includes a compressor 41, a condenser 42, an evaporator 43, a cooling fan 45 and an indoor fan 46, wherein the compressor 41, the condenser 42 and the evaporator 43 are connected via a refrigerant pipeline 44. The working principle of the refrigeration system 4 is the same as that of the existing air conditioner and will not be described in detail here.

[0028] A vertical partition 6 is provided inside the housing 1, the range hood fan 3 is provided at the front side of the vertical partition 6, and the heat dissipation fan 45 is provided at the rear side of the vertical partition 6. The range hood fan 3 and the heat dissipation fan 45 are both centrifugal fans, and the heat dissipation fan 45 and the range hood fan 3 rotate synchronously under the drive of the same motor 7. The motor 7 is a double-shaft motor, and the heat dissipation fan 45 and the range hood fan 3 share the double-shaft motor, which can make the internal structure of the range hood more compact and save costs.

[0029] The top of the housing 1 has a top plate 13, and the indoor fan 46 and the evaporator 43 are installed above the top plate 13. The indoor fan 46 is a cross-flow fan. Along the air flow direction, the evaporator 43 is arranged downstream of the indoor fan 46. In this embodiment, the evaporator 43 is located in front of the indoor fan 46. The external cover of the indoor fan 46 and the evaporator 43 is provided with an indoor cover 48, and the indoor cover 48 has an indoor air inlet 481 and an indoor air outlet 482. An air guide hood 49 is installed above the top plate 13, and an air conditioning outlet 12 is opened on the front of the housing 1. The indoor air outlet 482 is connected to the air conditioning outlet 12 through the air guide hood 49. When working in the cooling mode, under the action of the indoor fan 46, the cold air passes through the air guide hood 49 and finally blows forward through the air conditioning outlet 12 to cool the kitchen and improve the user experience.

[0030] The condenser 42 is arranged at the rear side of the vertical partition 6 and surrounds the cooling fan 45, and the cooling fan 45 is used to dissipate heat from the condenser 42. The cooling fan 45 has a cooling air duct 451, and the top and side of the housing 1 are provided with cooling air inlets 11, which are connected to the air inlet of the cooling fan 45. The air outlet of the cooling fan 45 faces downward and is connected to the air inlet 52 of the air outlet duct through the air guide duct 47. Therefore, under the action of the cooling fan 45, the air outside the range hood enters the cooling air duct 451 through the cooling air inlet 11, and then enters the air outlet duct 45 through the air guide duct 47, and finally blows out through the air outlet duct outlet 53.

[0031] A rotating air outlet plate 5 is installed on the smoke hood 2, and an air outlet channel 51 is formed inside the rotating air outlet plate 5. When the machine is turned off, the rotating air outlet plate 5 is turned upward to the bottom of the smoke hood 2 to close the oil smoke suction port 21. The rotating air outlet plate 5 is flush with the smoke hood 2, and the appearance is more beautiful and cleaning is more convenient. When the machine is turned on, the rotating air outlet plate 5 is turned downward to the lower part of the rear side of the smoke hood 2. At this time, the rotating air outlet plate 5 is in a vertical position, the heat dissipation duct 451 is connected to the air outlet channel 51, and the air outlet 53 of the air outlet channel faces the front and upper part. When the machine is turned on and the cooling mode is turned on, the air outlet 53 of the air outlet channel blows out hot air. Since the air outlet 53 of the air outlet channel faces the front and upward and the extension surface along the air outlet direction intersects with the oil fume suction port 21, the air blown out of the air outlet 53 of the air outlet channel can be blown toward the oil fume suction port 21. Since the air outlet 53 of the air outlet channel is a narrow and long outlet, the outlet wind speed is relatively large, and the wind speed is much greater than the rising speed of the oil fume. Due to the Coanda effect (wall attachment effect), the oil fume will be absorbed by the rising airflow and move back close to the rising airflow, so that the oil fume will not spread forward (towards people). In this way, the front and rear depth dimensions of the range hood can be reduced, or the conventional flip smoke baffle can be cancelled, which not only reduces the volume of the range hood, but also avoids the head-on collision phenomenon. In addition, since the temperature of the condenser 42 is very high when working in the cooling mode, the heat in the condenser 42 and the heat dissipation air duct 451 can be thermally transferred to the vertical partition 6 and the volute of the oil fume suction fan 3, softening the oil stains inside the range hood channel, playing a self-cleaning role.

[0032] If the cooling mode is not turned on, the air outlet 53 of the air outlet channel blows out air at room temperature. Rotating the air outlet plate 5 can also achieve the effect of preventing the oil smoke from adhering to the wall, reducing the depth dimension of the range hood, or eliminating the smoke baffle.

[0033] In this embodiment, the rotation structure of the rotating air outlet plate 5 is as follows:

[0034] A reduction motor 8 is installed inside the smoke hood 2, and the reduction motor 8 drives the rotating air outlet plate 5 to rotate through a transmission mechanism 9. Specifically, the transmission mechanism 9 includes a rocker arm 91 and a connecting rod 92. The first end of the rocker arm 91 is installed on the output shaft of the reduction motor 8, the first end of the connecting rod 92 is rotatably connected to the second end of the rocker arm 91, and the second end of the connecting rod 92 is rotatably connected to the rotating air outlet plate 5. The rotating air outlet plate 5 is also rotatably connected to the smoke hood 2 through a rotating shaft 10. Driven by the reduction motor 8, the rotating air outlet plate 5 can be driven to rotate up and down.

[0035] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A refrigeration-type range hood, comprising a housing (1) and a fume collecting hood (2) mounted at the bottom of the housing (1), a fume extractor fan (3) mounted inside the housing (1), the fume collecting hood (2) having a fume suction port (21), and a refrigeration system (4) mounted inside the housing (1), characterized in that: The housing (1) has a heat dissipation duct (451) inside, and a rotating air outlet plate (5) is installed on the smoke hood (2), and an air outlet channel (51) is formed inside the rotating air outlet plate (5). When the machine is turned off, the rotating air outlet plate (5) flips upward to the bottom of the smoke hood (2) to close the oil fume suction port (21); when the machine is turned on, the rotating air outlet plate (5) flips downward to the bottom of the rear side of the smoke hood (2), and the heat dissipation duct (451) is connected to the air outlet channel (51), and the air outlet (53) of the air outlet channel faces upward.

2. The refrigeration type range hood according to claim 1, characterized in that: The air outlet (53) of the air outlet channel faces forward and upward.

3. The refrigeration type range hood according to claim 2, characterized in that: The extension surface of the air outlet (53) of the air outlet channel along the air outlet direction intersects with the oil fume suction port (21).

4. The refrigeration type range hood according to claim 1, characterized in that: A vertical partition (6) is provided inside the casing (1); the fume extractor fan (3) is provided on the front side of the vertical partition (6); a heat dissipation fan (45) is provided on the rear side of the vertical partition (6); the heat dissipation fan (45) has the heat dissipation air duct (451); and the heat dissipation fan (45) and the fume extractor fan (3) rotate synchronously under the drive of the motor (7).

5. The refrigeration type range hood according to claim 4, characterized in that: The heat dissipation fan (45) is a centrifugal fan. The housing (1) is provided with a heat dissipation air inlet (11) which is connected to the air inlet of the heat dissipation fan (45). The air outlet of the heat dissipation fan (45) faces downward, and the air outlet of the heat dissipation fan (45) is connected to the air inlet (52) of the air outlet channel through an air guide channel (47).

6. The refrigeration type range hood according to claim 4, characterized in that: The refrigeration system (4) includes a compressor (41), a condenser (42), an evaporator (43) and the heat dissipation fan (45). The compressor (41), the condenser (42) and the evaporator (43) are connected via a refrigerant pipeline (44). The condenser (42) is arranged on the rear side of the vertical partition (6) and surrounds the heat dissipation fan (45).

7. The refrigeration type range hood according to claim 6, characterized in that: The refrigeration system (4) also includes an indoor fan (46), an air conditioning outlet (12) is provided on the front of the casing (1), and the outlet of the indoor fan (46) is connected to the air conditioning outlet (12).

8. The refrigeration type range hood according to claim 7, characterized in that: The top of the casing (1) is provided with a top plate (13), the indoor fan (46) and the evaporator (43) are installed above the top plate (13), the indoor fan (46) is a cross-flow fan, and along the air flow direction, the evaporator (43) is arranged downstream of the indoor fan (46), and the external cover of the indoor fan (46) and the evaporator (43) is provided with an indoor outer cover (48), the indoor outer cover (48) has an indoor air inlet (481) and an indoor air outlet (482), and the indoor air outlet (482) is connected to the air outlet (12) of the air conditioner.

9. The refrigeration type range hood according to claim 8, characterized in that: An air guide cover (49) is installed above the top plate (13), and the indoor air outlet (482) is connected to the air outlet (12) of the air conditioner via the air guide cover (49).

10. The refrigeration type range hood according to claim 8, characterized in that: The compressor (41) is installed above the top plate (13).

11. The refrigeration type range hood according to any one of claims 1 to 10, characterized in that: A reduction motor (8) is installed inside the smoke collecting hood (2), and the reduction motor (8) drives the rotating air outlet plate (5) to rotate through a transmission mechanism (9).

12. The refrigeration type range hood according to claim 11, characterized in that: The transmission mechanism (9) comprises a rocker arm (91) and a connecting rod (92); the first end of the rocker arm (91) is mounted on the output shaft of the reduction motor (8); the first end of the connecting rod (92) is rotationally connected to the second end of the rocker arm (91); the second end of the connecting rod (92) is rotationally connected to the rotating air outlet plate (5); and the rotating air outlet plate (5) is also rotationally connected to the smoke hood (2) via a rotating shaft (10).

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