Refrigeration type range hood and control method thereof

Abstract

The invention relates to a refrigeration type range hood and a control method thereof, the refrigeration type range hood comprises a fan frame and a lower box body, an oil smoke suction fan is installed inside the fan frame, a compressor, a condenser and an evaporator are installed outside the fan frame, and the lower box body is provided with a smoke inlet and a smoke baffle used for opening and closing the smoke inlet; the condenser is arranged on the air inlet side of the oil smoke suction fan so that heat dissipation air of the condenser can be sucked into the oil smoke suction fan, and under different working modes of the range hood, the air volume of the smoke inlet and the heat dissipation air volume of the condenser can be correspondingly adjusted. The refrigeration type range hood has the advantages that heat dissipation air of the condenser of the refrigeration type range hood is sucked by the oil smoke suction fan and discharged outwards into the public flue, a heat dissipation fan does not need to be additionally arranged, the structure is simple, the cost is low, the heat dissipation air can clean the volute and the impeller of the fan, oil stain condensation is prevented, and the service life of the refrigeration type range hood is prolonged. According to the control method of the range hood, the air volume of the smoke inlet and the heat dissipation air volume of the condenser can be correspondingly adjusted according to different working modes of the range hood, and the intelligent degree is high.

Description

Technical Field

[0001] The invention relates to a range hood, in particular to a refrigeration range hood and a control method thereof. Background Art

[0002] At present, the range hoods on the market only have the function of absorbing oil smoke, but the kitchen environment is often hot and stuffy when cooking, especially in summer, which reduces the comfort of people in the kitchen. Therefore, it is necessary to add an additional air conditioning function, and adding air conditioning requires heat dissipation of its heat dissipation module, and it is necessary to add an additional motor, which causes a complex structure and increased costs. For example, the "range hood" disclosed in the Chinese invention patent with patent number 201610083111.2 (authorization announcement number CN105570950B) includes a heat exhaust channel, and the heat exhaust duct can be set separately, that is, the heat exhaust duct is set with an air inlet and an air outlet separately, and a heat exhaust fan corresponding to the condenser is set inside the heat exhaust duct, so as to avoid oil smoke contamination of the condenser and improve the heat exchange efficiency and life of the condenser. However, the heat exhaust fan is set separately, which causes a complex structure and increases the cost. As an improvement, the "Refrigeration Range Hood" disclosed in the Chinese invention patent with patent number CN201610382769.3 (authorization announcement number CN 105910147 B) has a condenser arranged in the smoke exhaust chamber, and the heat of the condenser is taken away by the smoke exhaust fan. Although the refrigeration range hood omits the heat dissipation fan specifically used to dissipate the heat of the condenser, since the condenser is located in the smoke exhaust chamber, the condenser is easily contaminated by oil smoke, which in turn affects the heat exchange effect of the condenser and reduces the energy efficiency of the air conditioner. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide a refrigeration range hood that does not require an additional heat dissipation fan and has a sufficient fume suction air volume and heat dissipation air volume in different modes in response to the above-mentioned existing technical status.

[0004] The second technical problem to be solved by the present invention is to provide a control method for a refrigeration range hood capable of intelligently adjusting the range hood suction air volume and the heat dissipation air volume in response to the above-mentioned prior art status.

[0005] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: the refrigeration type range hood includes a fan frame and a lower box body arranged at the bottom of the fan frame, a range fume exhaust fan is installed inside the fan frame, and a compressor, a condenser and an evaporator are installed outside the fan frame, the compressor, the condenser and the evaporator are connected by a refrigerant pipeline, the lower box body has a smoke inlet connected to the air inlet of the fan and a smoke baffle for opening and closing the smoke inlet, and is characterized in that: the condenser is arranged on the air inlet side of the range fume exhaust fan so that the heat dissipation wind of the condenser can be sucked into the range fume exhaust fan, and under different working modes of the range hood, the air volume of the smoke inlet and the heat dissipation air volume of the condenser can be adjusted accordingly.

[0006] In order to adjust the heat dissipation air volume of the condenser, an air valve for adjusting the heat dissipation air volume is installed on the air inlet side of the condenser.

[0007] The air valve may have a variety of structures. Preferably, the air valve is an air inlet grille, and the heat dissipation air volume is adjusted by the opening and closing angle of the air inlet grille.

[0008] In order to intelligently adjust the range fumes suction air volume and the heat dissipation air volume, a first wind speed detector for detecting the wind speed at the smoke inlet is installed at the smoke inlet, and a second wind speed detector for detecting the wind speed of the air valve is installed at the air valve. A controller is also included, and the controller can receive data output by the first wind speed detector and the second wind speed detector and then adjust the gear position of the range fumes suction fan and the opening degree of the air valve.

[0009] Further preferably, the range hood fan is a vertically arranged centrifugal fan, and the central axis of the impeller of the centrifugal fan is perpendicular to the front side of the range hood.

[0010] In order to enable the air conditioner indoor unit to blow out cold air smoothly, an air conditioner indoor unit is installed above the fan frame, and the air conditioner indoor unit includes the evaporator and an air outlet fan.

[0011] The compressor can be installed in a plurality of different positions. Preferably, the compressor is arranged on the left side or the right side of the fan frame.

[0012] The technical solution adopted by the present invention to solve the above second technical problem is: the control method comprises the following steps:

[0013] S1, turn on the power;

[0014] S2, determine the working mode of the range hood,

[0015] If the range hood is turned on alone, go to step S3;

[0016] If the air conditioner is turned on alone, go to step S4;

[0017] If the range hood and air conditioner are turned on at the same time, proceed to step S5;

[0018] S3, the air valve is closed, the smoke baffle is opened, the range hood is turned on at different gears according to demand, and the system operates normally;

[0019] S4, the air valve opens to the maximum angle, the smoke baffle is closed, the range hood is turned on at a low gear, and the system operates normally;

[0020] S5, the air valve opens to a certain angle;

[0021] S6, the range hood is turned on at different gears according to demand;

[0022] S7, smoke baffle opens;

[0023] S8, the first wind speed detector detects whether the wind speed at the smoke inlet is less than the lower limit of the smoke suction wind speed,

[0024] If yes, proceed to step S9;

[0025] If not, proceed to step S10;

[0026] S9, the second wind speed detector detects whether the wind speed of the wind valve is less than the upper limit of the heat dissipation wind speed.

[0027] If yes, the range hood increases the air volume and returns to step S8;

[0028] If not, reduce the air valve opening angle and return to step S8;

[0029] S10, the second wind speed detector detects whether the wind speed of the wind valve is less than the lower limit of the heat dissipation wind speed,

[0030] If yes, increase the air valve opening angle and return to step S8;

[0031] If not, the system is operating normally.

[0032] Compared with the prior art, the advantages of the present invention are: the condenser of the refrigeration type range hood is arranged on the air inlet side of the range hood fan, the heat dissipation air of the condenser is sucked into the range hood fan and discharged outwardly into the public flue, there is no need to add a heat dissipation fan separately, the structure is simple, the cost is low, and the heat dissipation air can also clean the fan volute and impeller to prevent oil condensation. In addition, the control method of the range hood can adjust the air volume of the smoke inlet and the heat dissipation air volume of the condenser according to the different working modes of the range hood, and the degree of intelligence is high to meet the requirements of different modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of a range hood according to an embodiment of the present invention;

[0034] Figure 2 for Figure 1 The schematic diagram of the structure of the range hood shown is a diagram without the condenser and the air valve;

[0035] Figure 3 for Figure 1 A schematic structural diagram of the range hood from another angle;

[0036] Figure 4 A connection diagram of an air conditioning assembly according to an embodiment of the present invention;

[0037] Figure 5 This is a logic control diagram of the control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below with reference to the accompanying drawings.

[0039] like Figures 1 to 4 As shown, the refrigeration range hood of this embodiment includes a fan frame 1 and a lower box body 2 arranged at the bottom of the fan frame 1. A fume extractor fan 3 is installed inside the fan frame 1. The fume extractor fan 3 is a vertically arranged centrifugal fan, and the central axis of the impeller of the centrifugal fan is perpendicular to the front of the range hood. The lower box body 2 has a smoke inlet connected to the fan air inlet and a smoke baffle 8 for opening and closing the smoke inlet. The fume extractor air volume can be adjusted by adjusting the fan gear position. The above structure is the same as that of the existing range hood.

[0040] In this embodiment, an air conditioning component is installed outside the fan frame 1, and the air conditioning component specifically includes a compressor 4, a condenser 5 and an evaporator 6. The compressor 4, the condenser 5 and the evaporator 6 are connected through a refrigerant pipeline 7. The specific working principle of the air conditioning component can refer to the working principle of the existing air conditioner, and will not be described in detail here.

[0041] In this embodiment, the compressor 4 is installed on the right side of the fan frame 1, and can also be installed on the left side, front side or rear side of the fan frame 1. An air conditioner 10 is installed on the top of the fan frame 1. The air conditioner 10 includes an evaporator 6 and an air outlet fan 11. The air outlet fan 11 blows out cold air to improve the user's cooking experience. The condenser 5 is arranged on the air inlet side of the range hood fan 3. The range hood fan 3 serves as a heat dissipation fan for the condenser 5. Under the action of the range hood fan 3, the heat of the condenser 5 is sucked into the exhaust passage and then discharged into the public flue. Therefore, the condenser 5 is arranged outside the exhaust passage, and the condenser 5 is not easily polluted by oil smoke. In addition, since there is no need to add an additional heat dissipation fan to dissipate the heat of the condenser 5, the range hood structure can be simple and the cost can be reduced. In addition, an air valve is installed on the air inlet side of the condenser 5, and the heat dissipation air volume of the condenser 5 is adjusted by the air valve. The air valve in this embodiment is an air inlet grille 9, and the heat dissipation air volume is adjusted by the opening and closing angle of the air inlet grille 9.

[0042] In this embodiment, a first wind speed detector for detecting the wind speed at the smoke inlet is installed at the smoke inlet of the lower box body 2, and a second wind speed detector for detecting the wind speed of the air valve is installed at the air inlet grille 9. The controller can receive data output by the first wind speed detector and the second wind speed detector, and adjust the fan gear and the opening degree of the air valve accordingly according to the received data.

[0043] like Figure 5 As shown, the control method of the refrigeration type range hood of this embodiment includes the following steps:

[0044] S1, turn on the power;

[0045] S2, determine the working mode of the range hood,

[0046] If the range hood is turned on alone, go to step S3;

[0047] If the air conditioner is turned on alone, go to step S4;

[0048] If the range hood and air conditioner are turned on at the same time, proceed to step S5;

[0049] S3, the air valve is closed, the smoke baffle 8 is opened, the range hood is turned on at different gears according to demand, and the system operates normally;

[0050] S4, the air valve opens to the maximum angle, the smoke baffle 8 is closed, the range hood is turned on at a low gear, and the system operates normally;

[0051] S5, the air valve opens to a certain angle;

[0052] S6, the range hood is turned on at different gears according to demand;

[0053] S7, the smoke baffle 8 is opened;

[0054] S8, the first wind speed detector detects whether the wind speed at the smoke inlet is less than the lower limit of the smoke suction wind speed,

[0055] If yes, proceed to step S9;

[0056] If not, proceed to step S10;

[0057] S9, the second wind speed detector detects whether the wind speed of the wind valve is less than the upper limit of the heat dissipation wind speed.

[0058] If yes, the range hood increases the air volume and returns to step S8;

[0059] If not, reduce the air valve opening angle and return to step S8;

[0060] S10, the second wind speed detector detects whether the wind speed of the wind valve is less than the lower limit of the heat dissipation wind speed,

[0061] If yes, increase the air valve opening angle and return to step S8;

[0062] If not, the system is operating normally.

[0063] It can be seen from the above control method that in different working modes of the range hood, the oil fume suction air volume and the heat dissipation air volume of the condenser 5 can be adjusted accordingly. When the refrigeration range hood needs to turn on the oil fume mode alone, the air inlet grille 9 is controlled to be closed, and the range hood sucks oil fume from the smoke inlet below. When the refrigeration range hood needs to turn on the separate air conditioning mode, the air inlet grille 9 is fully opened, and the smoke guide plate 8 below the range hood is closed. At this time, through the strong suction force of the impeller of the oil fume fan 3, the air flow flows through the condenser 5 and enters the smoke exhaust channel through the air inlet grille 9, thereby dissipating the heat of the condenser 5, and at the same time, the heat is discharged to the public flue through the smoke exhaust channel. When the refrigeration range hood needs to turn on the oil fume suction mode and the air conditioning mode at the same time, the distribution of the oil fume suction air volume and the heat dissipation air volume is adjusted by controlling the oil fume fan gear and the opening degree of the air inlet grille 9.

Claims

1. A refrigeration type range hood, comprising a fan frame (1) and a lower box (2) arranged at the bottom of the fan frame (1), wherein a range hood fan (3) is installed inside the fan frame (1), and a compressor (4), a condenser (5) and an evaporator (6) are installed outside the fan frame (1), wherein the compressor (4), the condenser (5) and the evaporator (6) are connected via a refrigerant pipeline (7), and the lower box (2) has a smoke inlet connected to the air inlet of the fan and a smoke baffle (8) for opening and closing the smoke inlet, characterized in that: The condenser (5) is arranged on the air inlet side of the range hood exhaust fan (3) so that the heat dissipation air of the condenser (5) can be sucked into the range hood exhaust fan (3). In different working modes of the range hood, the air volume of the smoke inlet and the heat dissipation air volume of the condenser (5) can be adjusted accordingly.

2. The refrigeration type range hood according to claim 1, characterized in that: An air valve for adjusting the heat dissipation air volume is installed on the air inlet side of the condenser (5).

3. The refrigeration type range hood according to claim 2, characterized in that: The air valve is an air inlet grille (9), and the heat dissipation air volume is adjusted by the opening and closing angle of the air inlet grille (9).

4. The refrigeration type range hood according to claim 2, characterized in that: A first wind speed detector for detecting the wind speed at the smoke inlet is installed at the smoke inlet, and a second wind speed detector for detecting the wind speed of the wind valve is installed at the wind valve. A controller is also included, and the controller can receive data output by the first wind speed detector and the second wind speed detector and then adjust the gear position of the range fumes exhaust fan (3) and the opening degree of the wind valve.

5. The refrigeration type range hood according to claim 1, characterized in that: The range hood exhaust fan (3) is a centrifugal fan arranged vertically, and the central axis of the impeller of the centrifugal fan is perpendicular to the front of the range hood.

6. The refrigeration type range hood according to claim 1, characterized in that: An air conditioner indoor unit (10) is installed above the fan frame (1), and the air conditioner indoor unit (10) comprises the evaporator (6) and an air outlet fan (11).

7. The refrigeration type range hood according to claim 1, characterized in that: The compressor (4) is arranged on the left side or the right side of the fan frame (1).

8. A control method for a refrigeration range hood, characterized in that: The control method is applied to the refrigeration range hood according to claim 4, and the control method comprises the following steps: S1, turn on the power; S2, determine the working mode of the range hood, If the range hood is turned on alone, go to step S3; If the air conditioner is turned on alone, go to step S4; If the range hood and air conditioner are turned on at the same time, proceed to step S5; S3, the air valve is closed, the smoke baffle (8) is opened, the range hood is turned on to different gears according to demand, and the system operates normally; S4, the air valve is opened to the maximum angle, the smoke baffle (8) is closed, the range hood is turned on at a low gear, and the system operates normally; S5, the air valve opens to a certain angle; S6, the range hood is turned on at different gears according to demand; S7, the smoke baffle (8) is opened; S8, the first wind speed detector detects whether the wind speed at the smoke inlet is less than the lower limit of the smoke suction wind speed, if so, proceed to step S9; If not, proceed to step S10; S9, the second wind speed detector detects whether the wind speed of the air valve is less than the upper limit of the heat dissipation wind speed. If so, the range hood increases the air volume and returns to step S8; If not, reduce the air valve opening angle and return to step S8; S10, the second wind speed detector detects whether the wind speed of the wind valve is less than the lower limit of the heat dissipation wind speed. If so, the opening angle of the wind valve is increased, and the process returns to step S8; If not, the system is operating normally.

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