Refrigerated range hood

Abstract

A kind of refrigeration range hood, range hood includes first fan and second fan parallel to each other, valve plate is installed at the vent of fan frame, air inlet body has two air inlets and is installed with corresponding baffle, when only range hood is opened, vent is closed, first fan and second fan are opened or one of them is opened, two baffles are opened or only the baffle corresponding to the side of fan is opened, in air conditioning opening mode, vent is opened, and the heat of heat dissipation module is discharged by first fan.The refrigeration range hood realizes greater cooling capacity when air conditioner is opened alone, first fan and second fan are used as range hood when range hood is opened alone, first fan is used as both heat dissipation fan and range hood when air conditioner and range hood are opened, while realizing greater cooling capacity, improve the effect of suctioning oil smoke, air inlet baffle is opened and closed synchronously with one-side single suction of fan, so that air inlet is more smooth, it is beneficial to reduce noise and power.

Description

Technical Field

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

[0002] In a kitchen environment, cooking generates a large amount of oil fumes and heat, leading to increased indoor temperature and decreased comfort. To simultaneously address the needs of fume extraction and environmental cooling, refrigerated range hoods have emerged. However, existing condenser heat dissipation designs in refrigerated range hoods still have several technical limitations. For example, the Chinese invention patent "Kitchen Air Conditioning System" (patent number 201811150307.4, authorization announcement number CN110966676B) installs the condenser in the exhaust duct downstream of the range hood, using the airflow from the fan to directly blow on the condenser and remove the heat generated by the refrigerant during operation. While this solution eliminates the need for a separate outdoor unit and simplifies the equipment structure, the airflow from the fan contains a large number of oil fume particles. These particles easily adhere to the condenser surface, causing a sharp decrease in condenser heat dissipation efficiency and even leading to pipe blockages and abnormal refrigerant circulation. For example, the Chinese utility model patent "A Refrigeration-type Range Hood" with patent number 202420143790.8 (authorization announcement number CN 221881576U) has a ventilation opening on the volute ring wall of the cooling fan. The cooling fan provides separate airflow for cooling the condenser, and then the heated air is guided into the exhaust duct of the range hood and discharged outdoors. Although this solution avoids direct contact between the fumes and the condenser, the additional cooling fan increases the hardware cost of the equipment and also reduces the overall operational reliability. Furthermore, due to the limited installation space inside the range hood, the cooling fan is usually small in size and can only provide a limited amount of cooling airflow.

[0003] Furthermore, most common range hoods on the market currently feature a single-operation, single-suction function. This function allows for adjustment of the smoke extraction mode according to cooking needs, adapting to different levels of smoke generation in various scenarios. However, in actual use, when the single-suction function is activated, the flow path of the smoke within the range hood is not well-designed, often exhibiting a rather tortuous pattern. This tortuous airflow path leads to several problems: Firstly, the smoke encounters significant wind resistance during its flow, drastically reducing the range hood's smoke extraction efficiency. It cannot quickly and effectively remove cooking fumes, and some fumes may diffuse into the kitchen, polluting indoor air and potentially impacting the user's health. Secondly, increased wind resistance also leads to a significant increase in the range hood's operating noise, especially when the fan is running at high speed to overcome wind resistance and achieve the smoke extraction function. The resulting noise disrupts the quiet environment of the kitchen, causing discomfort to the user. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a cooling range hood that can meet the cooling needs of a large cooling capacity section and whose air inlet baffle and corresponding side fan open synchronously, in view of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a refrigeration range hood, including a fan frame and an air inlet body located at the bottom of the fan frame. A range hood fan is installed inside the fan frame, and a compressor, a heat dissipation module, and an indoor unit module are installed outside the fan frame. A ventilation opening is opened on the fan frame, and the air inlet body has an air inlet. The range hood fan includes a first fan and a second fan connected in parallel. A valve plate for opening and closing the ventilation opening is installed at the ventilation opening. The air inlet includes a first air inlet and a second air inlet. A first baffle is installed at the first air inlet, and a second baffle is installed at the second air inlet. When only the range hood is turned on, the ventilation opening is closed, and both the first fan and the second fan are turned on or one of them is turned on. Correspondingly, both the first baffle and the second baffle are turned on or only the baffle on the side corresponding to the fan is turned on. In the air conditioning mode, the ventilation opening is opened, and the heat from the heat dissipation module is discharged through the first fan.

[0006] The fan can have various structures and installation methods. The first fan and the second fan are both centrifugal fans with a double air inlet structure, or both are centrifugal fans with a single air inlet structure, or one of them is a centrifugal fan with a single air inlet structure and the other is a centrifugal fan with a double air inlet structure. The first fan and the second fan are both vertically arranged. The central axis of the impeller of the first fan and the central axis of the impeller of the second fan are located on the same straight line and perpendicular to the left and right side walls of the fan frame.

[0007] In order to allow the heat from the heat dissipation module to be carried away smoothly by the first fan, the ventilation opening is located on the side wall of the fan frame opposite to the air inlet of the first fan.

[0008] The heat dissipation module and the indoor unit module can have various structures. Preferably, the heat dissipation module includes a condenser, and the indoor unit module includes an evaporator and an indoor unit fan. The compressor, condenser, and evaporator are connected through refrigerant pipelines. The heat dissipation module has a heat dissipation air inlet, and a heat dissipation air duct is formed between the heat dissipation air inlet and the vent. The compressor and condenser are installed in the heat dissipation air duct.

[0009] The compressor and condenser can be installed in multiple different locations. Preferably, the condenser is located upstream of the compressor, along the direction of airflow.

[0010] The indoor unit module can be installed in multiple different locations. Preferably, the indoor unit module is located above the fan frame and has an indoor unit air inlet and an indoor unit air outlet.

[0011] In order to enable the exhaust outlets of the first fan and the second fan to be independent of each other, there are independent first air ducts and second air ducts. The first air duct is installed at the air outlet of the first fan, and the second air duct is installed at the air outlet of the second fan.

[0012] As a preferred embodiment of any of the above solutions, the first baffle, the second baffle, and the valve plate can be linked together under the control of the controller.

[0013] Compared with the prior art, the advantages of this utility model are as follows: the exhaust fans of this cooling range hood are a first fan and a second fan connected in parallel, which can provide a larger air volume. When the air conditioner is turned on alone, the first fan can dissipate heat from the heat dissipation module. Since the air volume of the first fan is relatively large, it is conducive to achieving a larger cooling capacity. When the range hood is turned on alone, both the first fan and the second fan are used as exhaust fans. When both the air conditioner and the range hood are turned on, the first fan can be used as a heat dissipation fan and as an exhaust fan. While achieving a larger cooling capacity, it can also improve the exhaust effect. In addition, the air inlet baffle can open and close synchronously with the single-sided exhaust of the fan, making the air intake smoother and helping to reduce noise and power consumption. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention (vent closed);

[0015] Figure 2 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention (with the vent open);

[0016] Figure 3 for Figure 1 The side view of the range hood shown;

[0017] Figure 4 for Figure 1 Another side view of the range hood;

[0018] Figure 5 This is a schematic diagram showing the connection of the refrigeration system components according to an embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the structure of this utility model embodiment with both air inlet baffles open;

[0020] Figure 7 This is a schematic diagram of the structure of this utility model embodiment with the left air inlet baffle open;

[0021] Figure 8 This is a schematic diagram of the structure of this utility model embodiment with the right air inlet baffle open. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 5 As shown, the refrigerated range hood of this embodiment includes a fan frame 1 and an air inlet 2 located at the bottom of the fan frame 1. A range hood 3 is installed inside the fan frame 1, and the air inlet 2 has an air inlet 21. The range hood 3 of this embodiment includes a first fan 31 and a second fan 32 connected in parallel. The first fan 31 and the second fan 32 have identical or similar performance. In this embodiment, both the first fan 31 and the second fan 32 are centrifugal fans with a dual-inlet structure. Both the first fan 31 and the second fan 32 are vertically arranged, with the impeller center axis of the first fan 31 and the impeller center axis of the second fan 32 located on the same straight line and perpendicular to the left and right side walls of the fan frame 1. A first duct 11 is installed at the air outlet of the first fan 31, and a second duct 12 is installed at the air outlet of the second fan 32. The first duct 11 and the second duct 12 are independent of each other and do not interfere with each other.

[0024] In addition, the first fan 21 and the second fan 22 can both be centrifugal fans with a single air inlet structure, or one of them can be a centrifugal fan with a single air inlet structure and the other can be a centrifugal fan with a double air inlet structure.

[0025] The fan frame 1 is externally equipped with a compressor 4, a heat dissipation module 5, and an indoor unit module 6. The heat dissipation module 5 includes a condenser 51 and a heat dissipation air inlet 52. The indoor unit module 6 includes an evaporator 61 and an indoor unit fan 62. The compressor 4, condenser 51, and evaporator 61 are connected by a refrigerant pipe 9. A vent 10 is provided on the fan frame 1, forming a heat dissipation duct 53 between the heat dissipation air inlet 52 and the vent 10. The compressor 4 and condenser 51 are installed within the heat dissipation duct 53, and the condenser 51 is positioned upstream of the compressor 4 along the airflow direction. The indoor unit module 6 is located above the fan frame 1 and has an indoor unit air inlet and an indoor unit air outlet. In cooling mode, the indoor unit air outlet blows out cool air, enhancing the user's cooking experience.

[0026] In this embodiment, the ventilation opening 10 is located on the side wall of the fan frame 1 opposite to the air inlet of the first fan 31. A valve plate 7 for opening and closing the ventilation opening 10 is installed at the ventilation opening 10. Figure 1 As shown, valve plate 7 is in a vertical position, and vent 10 is closed, as... Figure 2 As shown, valve plate 7 is in a horizontal position and vent 10 is open.

[0027] In this embodiment, the air inlet 2 includes a first air inlet 211 and a second air inlet 212. A first baffle 81 is installed in the first air inlet 211, and a second baffle 82 is installed in the second air inlet 212. The first baffle 81 and the second baffle 82 can be opened independently. Furthermore, under the control of a controller (not shown in the figure), the first baffle 81, the second baffle 82, and the valve plate 7 can be linked together to accommodate different working modes.

[0028] like Figures 6 to 8 The image shows the different operating modes of the range hood when it is only turned on, as detailed below:

[0029] like Figure 6 As shown, with vent 10 closed and both the first fan 31 and the second fan 32 open, as well as the first baffle 81 and the second baffle 82 open, the fumes enter the air intake body 2 through the first air inlet 211 and the second air inlet 212, and then flow into the first fan 31 and the second fan 32. Most of the fumes drawn in through the first air inlet 211 flow to the first fan 31, and most of the fumes drawn in through the second air inlet 212 flow to the second fan 32. Furthermore, the fumes airflow within the fan frame 1 will not flow into the heat dissipation duct 53, thus preventing contamination of the condenser 51 and the compressor 4. At this time, both the first fan 31 and the second fan 32 are used to extract fumes, providing a large air volume and achieving good fume extraction.

[0030] like Figure 7 As shown, with vent 10 closed, first fan 31 on, second fan 32 off, first baffle 81 on, and second baffle 82 off, the fumes enter the air intake body 2 through the first air inlet 211 and then flow into the first fan 31. At this time, it is a single suction on the left side, the air path is relatively smooth, the fan power is reduced, and the noise is reduced.

[0031] like Figure 8 As shown, with vent 10 closed, first fan 31 closed, second fan 32 open, first baffle 81 closed, and second baffle 82 open, the fumes enter the air intake body 2 through the second air inlet 212 and then flow into the second fan 32. At this time, it is a single suction on the right side, the air path is relatively smooth, the fan power is reduced, and the noise is reduced.

[0032] like Figure 2As shown, in the air conditioning on mode, the vent 10 is open, and the heat from the heat dissipation module 5 is exhausted through the first fan 31. At this time, the first fan 31 serves as both a heat dissipation fan for the condenser 51 and a range hood fan. The air conditioning on mode can be divided into two types: one where only the air conditioning is on, and the other where both the air conditioning and the range hood are on. In the air conditioning-only mode, it is preferable to only operate the first fan 31. Since the airflow of the first fan 31 is large enough to provide sufficient airflow for the condenser 51 to dissipate heat, the size of the condenser can be reduced, thereby lowering the cost of the condenser. Alternatively, both the first fan 31 and the second fan 32 can be on. The simultaneous operation of the first fan 31 and the second fan 32 can achieve a larger airflow, and both the first fan 31 and the second fan 32 dissipate heat from the condenser 42, resulting in better heat dissipation and facilitating the achievement of large-capacity cooling. When both the air conditioner and the range hood are on, both the first fan 31 and the second fan 32 are turned on. If the first fan 31 has a single-sided air inlet structure, it is used to dissipate heat from the condenser 51, and the heat dissipation airflow is discharged into the first air duct 11 through the first fan 31. If the first fan 31 has a dual air inlet mechanism, it is used not only to dissipate heat from the condenser 51, but also to absorb fumes. The second fan 32 always plays the role of absorbing fumes.

[0033] This range hood can be controlled by a voice module, which is equipped with a control module, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the range hood to perform corresponding operations, thereby realizing intelligent control of the range hood and improving the user experience.

Claims

1. A refrigeration type range hood, comprising a fan frame (1) and an air inlet body (2) arranged at the bottom of the fan frame (1), wherein a range hood fan (3) is arranged in the fan frame (1), a compressor (4), a heat dissipation module (5) and an indoor unit module (6) are arranged outside the fan frame (1), a ventilation opening (10) is formed in the fan frame (1), and the air inlet body (2) has an air inlet opening (21), characterized in that: The range hood fan (3) includes a first fan (31) and a second fan (32) connected in parallel. A valve plate (7) for opening and closing the vent (10) is installed at the vent (10). The air inlet (21) includes a first air inlet (211) and a second air inlet (212). A first baffle (81) is installed at the first air inlet (211), and a second baffle (82) is installed at the second air inlet (212). When only the range hood is turned on, the vent (10) is closed, and both the first fan (31) and the second fan (32) are turned on or one of them is turned on. Correspondingly, both the first baffle (81) and the second baffle (82) are turned on or only the baffle on the side corresponding to the fan is turned on. In the air conditioning mode, the vent (10) is turned on, and the heat from the heat dissipation module (5) is discharged through the first fan (31).

2. The refrigerated extractor hood according to claim 1, characterized in that: The first fan (31) and the second fan (32) are both centrifugal fans with double air intake structure, or both are centrifugal fans with single air intake structure, or one of them is a centrifugal fan with single air intake structure and the other is a centrifugal fan with double air intake structure. The first fan (31) and the second fan (32) are both vertically arranged. The impeller center axis of the first fan (31) and the impeller center axis of the second fan (32) are located on the same straight line and perpendicular to the left and right side walls of the fan frame (1).

3. The refrigerated extractor hood according to claim 2, characterized in that: The ventilation opening (10) is located on the side wall of the fan frame (1) opposite to the air inlet of the first fan (31).

4. The refrigerated extractor hood according to claim 1, characterized in that: The heat dissipation module (5) includes a condenser (51), the indoor unit module (6) includes an evaporator (61) and an indoor unit fan (62), the compressor (4), the condenser (51) and the evaporator (61) are connected by a refrigerant pipeline (9), the heat dissipation module (5) has a heat dissipation air inlet (52), a heat dissipation air duct (53) is formed between the heat dissipation air inlet (52) and the vent (10), and the compressor (4) and the condenser (51) are installed in the heat dissipation air duct (53).

5. The refrigerated range hood according to claim 4, characterized in that: Along the direction of airflow, the condenser (51) is located upstream of the compressor (4).

6. The refrigerated range hood according to claim 1, characterized in that: The indoor unit module (6) is located above the fan frame (1), and the indoor unit module (6) has an indoor unit air inlet and an indoor unit air outlet.

7. The refrigerated range hood according to claim 1, characterized in that: It includes a first air duct (11) and a second air duct (12) that are independent of each other. The first air duct (11) is installed at the air outlet of the first fan (31), and the second air duct (12) is installed at the air outlet of the second fan (32).

8. The refrigerated range hood according to any one of claims 1 to 7, characterized in that: The first baffle (81), the second baffle (82) and the valve plate (7) can be linked together under the control of the controller.

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