A type of cooling range hood

Abstract

A cooling-type range hood includes a casing and a smoke collection hood. A smoke extraction fan is installed inside the casing, and the smoke collection hood has a smoke inlet. A cooling system is installed inside the casing, which also has a heat dissipation duct. A rotating air outlet plate is installed on the smoke collection hood, forming an air outlet channel inside. In the off state, the rotating air outlet plate flips upwards to the bottom of the smoke collection hood, closing the smoke inlet. In the on state, the rotating air outlet plate flips downwards to the lower rear side of the smoke collection hood. The heat dissipation duct is connected to the air outlet channel, and the air outlet of the air outlet channel faces upwards. When this cooling-type range hood is turned on, the cooling airflow blows upwards, utilizing the Coanda effect to absorb smoke backwards, reducing the front-to-back depth of the range hood and decreasing its overall size. It also eliminates the need for a smoke baffle and dissipates heat to the condenser in cooling mode. When turned off, the rotating air outlet plate flips upwards to the bottom of the smoke collection hood, closing the smoke inlet. The structure is simpler and easier to clean.

Description

Technical Field

[0001] This invention relates to range hoods, and more particularly to a refrigerated range hood. Background Technology

[0002] Existing technologies disclose various cooling-type range hoods, which add an air conditioning component to the existing range hood platform, thus achieving both the functions of a range hood and an air conditioning system. When operating in cooling mode, the condenser needs heat dissipation. Currently, the condenser is typically placed inside the fume duct, and the exhaust fan is used for cooling. Existing technologies disclose various cooling-type range hoods, such as the "Rain Extractor" disclosed in Chinese Utility Model Patent No. 201620118025.6 (Authorization Announcement No. CN205481215U). This range hood places the condenser inside the exhaust chamber. Although the centrifugal fan can purify the oil-laden air and then dissipate heat from the condenser, the oil-laden air can contaminate the condenser surface, causing blockages. Therefore, a purification device is usually installed at the front end of the condenser. However, this purification device can easily lead to obstructed exhaust ducts, higher noise levels, and is also costly, has a high failure rate, and requires regular maintenance. Furthermore, purification devices often cannot completely remove oil fume particles from the air. When the fan blows air onto the condenser, the condenser may become contaminated with oil fume, leading to blockage and reduced heat dissipation performance. For example, the Chinese utility model patent No. 202320059220.6 (authorization announcement No. CN 219222570 U) discloses a "Refrigeration-type Range Hood." In this refrigeration-type range hood, the heat dissipation cavity of the air conditioner outdoor unit module is located outside the fan frame, and the condenser is located inside the heat dissipation cavity. The heat from the condenser can enter the range hood through the heat dissipation outlet and be carried away by the range hood along with the oil fume. Since the condenser is located outside the exhaust duct, no purification device is needed, reducing cost and maintenance rate. In addition, the cooling fan is installed at the top of the heat dissipation cavity, away from the high-temperature hot zone of the outdoor unit module, greatly ensuring the lifespan of the entire cooling fan assembly, reducing motor failure rate, and facilitating maintenance and replacement of the cooling fan. Although this cooling range hood can remove heat from the condenser using the extraction fan, it still requires a separate cooling fan to dissipate heat from the condenser, resulting in higher energy consumption and costs. Furthermore, the cooling airflow enters the extraction fan through ventilation holes on the fan frame, which has little effect on improving smoke extraction efficiency. In conclusion, further improvements to the existing cooling range hood are necessary. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a cooling range hood that can improve the heat dissipation effect of the condenser and the smoke extraction effect, in light of the above-mentioned existing technology.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a refrigerated range hood, comprising a housing and a smoke collection hood installed at the bottom of the housing, a smoke extraction fan installed inside the housing, a smoke collection hood having a smoke inlet, and a refrigeration system installed inside the housing, characterized in that: a heat dissipation duct is provided inside the housing, a rotating air outlet plate is installed on the smoke collection hood, and an air outlet channel is formed inside the rotating air outlet plate; in the off state, the rotating air outlet plate flips upward to the bottom of the smoke collection hood to close the smoke inlet; in the on state, the rotating air outlet plate flips downward to the lower rear side of the smoke collection hood, the heat dissipation duct is connected to the air outlet channel, and the air outlet of the air outlet channel faces upward.

[0005] In order to create an effective wall adhesion effect for the rising fumes, the air outlet of the air outlet channel faces forward and upward.

[0006] Further preferably, the extension surface of the air outlet of the air outlet channel along the air outlet direction intersects with the oil fume inlet. This further enhances the wall adhesion effect, thereby improving the oil fume extraction efficiency.

[0007] To avoid using a separate cooling fan, a vertical partition is provided inside the casing. The range hood fan is located on the front side of the vertical partition, and a cooling fan is located on the rear side of the vertical partition. The cooling fan has the aforementioned cooling air duct. The cooling fan and the range hood fan rotate synchronously under the drive of a motor. In this way, the range hood fan and the cooling fan are coaxial and driven by the same motor, resulting in a more compact, simpler structure and lower cost.

[0008] In order to ensure that the air blown out by the cooling fan can smoothly enter the air outlet channel of the rotating air outlet plate, the cooling fan is a centrifugal fan. The housing has a cooling air inlet that is connected to the air inlet of the cooling fan. The air outlet of the cooling fan faces downward and is connected to the air inlet of the air outlet channel through an air guide channel.

[0009] In order for 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 refrigerant pipes. The condenser is located behind 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 unit fan. An air conditioning vent is opened on the front of the casing, and the air outlet of the indoor unit fan is connected to the air conditioning vent.

[0011] In a further preferred embodiment, the top of the casing has a top plate, and the indoor unit fan and evaporator are installed above the top plate. The indoor unit fan is a cross-flow fan, flowing along the airflow direction. The evaporator is located downstream of the indoor unit fan. The indoor unit fan and evaporator are covered by an indoor unit cover, which has an indoor unit air inlet and an indoor unit air outlet. The indoor unit air outlet is connected to the air conditioner air outlet.

[0012] To prevent cold air leakage, an air guide cover is installed above the top plate, and the indoor unit's air outlet is connected to the air conditioner's air outlet through the air guide cover.

[0013] The compressor can be installed in several different locations; preferably, it is installed above the top plate. When the refrigeration system is operating, the compressor generates noise. Installing the compressor on top of the range hood can reduce the impact of noise on the cook, thus improving the cooking experience.

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

[0015] Various transmission mechanisms are possible. 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 geared motor. The first end of the connecting rod is rotatably connected to the second end of the rocker arm, and 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. This transmission mechanism has a simple structure, low cost, and can also achieve normal rotation of the rotating air outlet plate.

[0016] Compared with the prior art, the advantages of the present invention are as follows: The cooling range hood is equipped with a rotating air outlet plate that can rotate relative to the smoke collection hood. In the powered-on state, the rotating air outlet plate flips downward to the lower rear side of the smoke collection hood. The heat dissipation air duct of the cooling system is connected to the air outlet channel of the rotating air outlet plate. Since the air outlet of the air outlet channel faces upward, the heat dissipation airflow blows upward. This can utilize the Coanda effect (wall adhesion effect) to absorb oil fumes backward, reduce the front and rear depth dimensions of the range hood and reduce its size. At the same time, there is no need to add a smoke baffle. It can also dissipate heat for the condenser in the cooling state. In the powered-off state, the rotating air outlet plate flips upward to the bottom of the smoke collection hood and closes the oil fume intake. The structure is simpler and easier to clean. Attached Figure Description

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

[0018] Figure 2 for Figure 1 The diagram shows the structure of the range hood from another angle.

[0019] Figure 3 for Figure 1 The diagram shown is a schematic of the internal structure of the range hood.

[0020] Figure 4 This is a schematic diagram of the heat dissipation module and the range hood fan in this embodiment;

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

[0022] Figure 6 This is a schematic diagram of the structure of a refrigerated range hood according to an embodiment of the present invention (in the powered-on state);

[0023] Figure 7 for Figure 6 The diagram shows the structure of the range hood from another angle.

[0024] Figure 8 for Figure 7 The diagram shows a cross-sectional view of the range hood.

[0025] Figure 9 This is a schematic diagram of the component connections of the refrigeration system of the refrigeration-type range hood according to an embodiment of the present invention. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figures 1 to 8 As shown, the refrigerated range hood of this embodiment includes a housing 1 and a smoke collection hood 2 installed at the bottom of the housing 1. A smoke extraction fan 3 is installed inside the housing 1, and the smoke collection hood 2 has a smoke inlet 21. A refrigeration system 4 is installed inside the housing 1. Figure 9 As shown, the refrigeration system 4 includes a compressor 41, a condenser 42, an evaporator 43, a cooling fan 45, and an indoor unit fan 46. The compressor 41, condenser 42, and evaporator 43 are connected by a refrigerant pipeline 44. The working principle of the refrigeration system 4 is the same as that of existing air conditioners, and will not be described in detail here.

[0028] The casing 1 has a vertical partition 6 inside. The range hood fan 3 is located on the front side of the vertical partition 6, and the cooling fan 45 is located on the rear side of the vertical partition 6. Both the range hood fan 3 and the cooling fan 45 are centrifugal fans, and they rotate synchronously under the drive of the same motor 7. The motor 7 is a dual-shaft motor. The cooling fan 45 and the range hood fan 3 share this dual-shaft motor, which makes the internal structure of the range hood more compact and saves costs.

[0029] The casing 1 has a top plate 13. An indoor unit fan 46 and an evaporator 43 are mounted above the top plate 13. The indoor unit fan 46 is a cross-flow fan, positioned along the airflow direction. The evaporator 43 is located downstream of the indoor unit fan 46; in this embodiment, the evaporator 43 is located in front of the indoor unit fan 46. An indoor unit cover 48 is provided around the indoor unit fan 46 and the evaporator 43. The indoor unit cover 48 has an indoor unit air inlet 481 and an indoor unit air outlet 482. An air guide hood 49 is installed above the top plate 13. An air conditioning outlet 12 is opened on the front of the casing 1, and the indoor unit air outlet 482 is connected to the air conditioning outlet 12 through the air guide hood 49. When operating in cooling mode, under the action of the indoor unit fan 46, cold air passes through the air guide hood 49 and finally blows forward through the air conditioning outlet 12, cooling the kitchen and improving the user experience.

[0030] The condenser 42 is located behind the vertical partition 6 and surrounds the cooling fan 45, which dissipates heat from the condenser 42. The cooling fan 45 has a cooling duct 451, and cooling air inlets 11 are opened on the top and side of the casing 1. The cooling air inlets 11 are connected to the air inlets of the cooling fan 45, and the air outlet of the cooling fan 45 faces downward and is connected to the air outlet inlet 52 of the air outlet duct through the air guide channel 47. Thus, under the action of the cooling fan 45, external air of the range hood enters the cooling duct 451 through the cooling air inlet 11, then enters the air outlet duct 45 through the air guide channel 47, and is finally blown out through the air outlet 53 of the air outlet duct.

[0031] A rotating air outlet plate 5 is installed on the fume hood 2. The interior of the rotating air outlet plate 5 forms an air outlet channel 51. In the off state, the rotating air outlet plate 5 flips upward to the bottom of the fume hood 2, closing the oil fume inlet 21. The rotating air outlet plate 5 is flush with the fume hood 2, making it more aesthetically pleasing and easier to clean. In the on state, the rotating air outlet plate 5 flips downward to the lower rear side of the fume hood 2. At this time, the rotating air outlet plate 5 is in a vertical position, and the heat dissipation air duct 451 is connected to the air outlet channel 51, with the air outlet 53 of the air outlet channel facing forward and upward. When the machine is turned on and the cooling mode is activated, hot air is blown out of the air outlet 53. Since the air outlet 53 faces forward and upward, and its extension along the airflow direction intersects with the fume inlet 21, the air blown out of the air outlet 53 can be directed towards the fume inlet 21. Because the air outlet 53 is a long and narrow outlet, the outlet air velocity is relatively high, which is much greater than the upward velocity of the fumes. Due to the Coanda effect (wall adhesion effect), the fumes are drawn back and close to the upward airflow, thus preventing the fumes from spreading forward (towards the person). This allows for a reduction in the front-to-back depth of the range hood, or the elimination of the conventional flip-up baffle, reducing the size of the range hood and preventing head bumps. Furthermore, because the condenser 42 is very hot when operating in cooling mode, the heat in the condenser 42 and the heat dissipation duct 451 can be conducted to the vertical baffle 6 and the volute of the range hood fan 3, softening the grease inside the range hood duct and achieving a self-cleaning effect.

[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 oil fumes adhering to the wall, reducing the depth dimension of the range hood, or eliminating the smoke baffle.

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

[0034] A geared motor 8 is installed inside the smoke hood 2. The geared motor 8 drives the rotating air outlet plate 5 to rotate via 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 mounted on the output shaft of the geared 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 via a rotating shaft 10. Driven by the geared motor 8, the rotating air outlet plate 5 can rotate up and down.

[0035] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A refrigerated range hood, comprising a housing (1) and a smoke collection hood (2) installed at the bottom of the housing (1), wherein a smoke extraction fan (3) is installed inside the housing (1), the smoke collection hood (2) has a smoke inlet (21), and a refrigeration system (4) is installed inside the housing (1), characterized in that: The casing (1) has a heat dissipation duct (451) inside. A rotating air outlet plate (5) is installed on the smoke hood (2). An air outlet channel (51) is formed inside the rotating air outlet plate (5). In the off state, the rotating air outlet plate (5) flips upward to the bottom of the smoke hood (2) and closes the oil fume inlet (21). In the on state, the rotating air outlet plate (5) flips downward to the lower part of the rear side of the smoke hood (2). 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 refrigerated range hood according to claim 1, characterized in that: The air outlet (53) of the air outlet channel faces forward and upward.

3. The refrigerated range hood according to claim 2, characterized in that: The air outlet (53) of the air outlet channel extends along the air outlet direction and intersects with the oil fume inlet (21).

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

5. The refrigerated range hood according to claim 4, characterized in that: The cooling fan (45) is a centrifugal fan. The housing (1) has a cooling air inlet (11) that is connected to the air inlet of the cooling fan (45). The air outlet of the cooling fan (45) faces downward. The air outlet of the cooling fan (45) is connected to the air inlet (52) of the air outlet channel through the air guide channel (47).

6. The refrigerated range hood according to claim 4, characterized in that: The refrigeration system (4) includes a compressor (41), a condenser (42), an evaporator (43) and a cooling fan (45). The compressor (41), condenser (42) and evaporator (43) are connected by a refrigerant pipe (44). The condenser (42) is located on the rear side of the vertical partition (6) and surrounds the cooling fan (45).

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

8. The refrigerated range hood according to claim 7, characterized in that: The casing (1) has a top plate (13) on top. The indoor unit fan (46) and evaporator (43) are installed above the top plate (13). The indoor unit fan (46) is a cross-flow fan. The evaporator (43) is located downstream of the indoor unit fan (46). The indoor unit fan (46) and evaporator (43) are covered by an indoor unit cover (48). The indoor unit cover (48) has an indoor unit air inlet (481) and an indoor unit air outlet (482). The indoor unit air outlet (482) is connected to the air conditioner air outlet (12).

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

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

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

12. The refrigerated range hood according to claim 11, characterized in that: The transmission mechanism (9) includes 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 geared motor (8). The first end of the connecting rod (92) is rotatably connected to the second end of the rocker arm (91). 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).

Images