CN220958588U - Refrigerating type range hood - Google Patents

Abstract

A refrigerating type fume exhauster is characterized in that a ventilation opening is formed in the annular wall of a volute of a fan, an air guide valve used for guiding hot air blown out by a heat dissipation fan into the volute is arranged at the ventilation opening, an inner side pressure sensor is arranged on the inner side wall of the air guide valve facing the inside of the volute, an outer side pressure sensor is arranged on the outer side wall of the air guide valve facing the outside of the volute, and a controller can receive output signals of the inner side pressure sensor and the outer side pressure sensor and control a motor according to the received signals so as to adjust the rotation angle of the air guide valve. The cooling type fume exhaust guides hot air blown out by the heat radiation fan into the volute through the ventilation opening, on one hand, the working efficiency of the air conditioner is improved, on the other hand, the hot air is blown into the volute to clean the volute and the impeller, in addition, the air guide valve arranged at the ventilation opening is provided with an internal pressure sensor and an external pressure sensor, and the opening of the air guide valve can be adjusted by the controller according to the internal pressure differential state and the external pressure differential state, so that the air guide valve is ensured to be in an optimal state.

Description

Refrigerating type range hood

Technical Field

The utility model relates to a range hood, in particular to a refrigeration type range hood.

Background

Various refrigeration type range hoods are disclosed in the prior art, an air conditioning component is added on the basis of a range hood platform, a compressor, a condenser and an evaporator are communicated through refrigerant pipelines, and the refrigeration type range hood can realize all functions of the range hood and can realize functions of an air conditioner. In the daily use process of the refrigeration range hood, a large amount of oil dirt can be remained on the spiral case and the impeller, and the oil dirt can form a hard grease layer on the spiral case and the impeller after long-time air drying and solidification, so that the oil dirt is very difficult to clean. At present, the traditional range hood on the market often has no cleaning function, and even if the cleaning function is increased, the water pump and the heating rod are simply increased to heat, spray and clean the externally added water, so that additional parts are required to be added, and the reliability of the whole range hood is reduced. Meanwhile, a water source is required to be added through the outside, so that the complexity is increased. Although, there is also disclosed a range hood using condensate water to clean a volute, such as the 'air-conditioning type' disclosed in chinese patent No. 202220018984.6 (issued publication No. CN 217004584U), a water collecting box for collecting condensate water condensed on the surface of an evaporator is disposed in a casing of the range hood, a steam generator is mounted in the casing, the water collecting box is communicated with a water inlet of the steam generator through a water outlet pipe, and a steam outlet of the steam generator is communicated with an air duct in the range hood. The air conditioner comdenstion water gets into the range hood inside after steam generator evaporates, and high temperature steam washs the impeller through fan impeller, and although this air conditioner formula range hood utilizes the comdenstion water to wash fan impeller, nevertheless need utilize the steam generator in casing inside to heat the comdenstion water, not only the structure is complicated, has still increased the cost moreover, does not obtain effective utilization to the heat that the air conditioner during operation condenser produced. In addition, chinese patent No. 201220666311.8 (issued publication No. CN 203051230U) discloses a fan volute middle plate guide vane air inlet structure of a range hood, which includes an annular middle plate connected with a volute front cover plate and a rear cover plate, wherein a volute tongue angle at the front end of the annular middle plate is designed to prevent air quantity from entering an outlet and flowing to the volute again at a better angle, an air inlet is formed at the rear end of the volute tongue, and an air inlet is formed at the rear end of the volute tongue of the annular middle plate, so that air flow is immediately introduced from the air inlet through an air inlet guide plate after the blade of the impeller passes through the volute tongue, the fan efficiency is improved, the air quantity at the outlet is increased, but the air inlet structure cannot regulate the air quantity of the air inlet, and the intelligent degree is insufficient.

Disclosure of utility model

The utility model aims to solve the technical problem of providing the refrigeration type range hood capable of intelligently adjusting the air inlet quantity of the heat radiation fan entering the interior of the range hood.

The technical scheme adopted for solving the technical problems is as follows: this refrigeration formula range hood is including oil smoke absorption module, compressor, heat dissipation module and interior machine module, oil smoke absorption module is including the oil smoke ventilator, compressor, heat dissipation module and interior machine module are linked together through the refrigerant pipeline, the outside of oil smoke ventilator is located to heat dissipation module and interior machine module, the oil smoke ventilator includes the spiral case and installs the impeller inside the spiral case, heat dissipation module's has heat dissipation fan, its characterized in that: the air guide valve is arranged at the position of the ventilation opening, hot air blown by the heat dissipation fan is guided into the volute, an inner side pressure sensor is arranged on the inner side wall of the air guide valve, which faces the inside of the volute, an outer side pressure sensor is arranged on the outer side wall of the air guide valve, which faces the outside of the volute, and the air guide valve further comprises a controller and a motor for driving the air guide valve to rotate, wherein the controller can receive output signals of the inner side pressure sensor and the outer side pressure sensor, and control the motor according to the received signals, so that the rotation angle of the air guide valve is adjusted.

Preferably, the air guide part of the air guide valve is a flat plate, and the range of an included angle A between the tangent line of the volute casing ring wall at the root part of the air guide valve and the air guide valve is more than or equal to 10 degrees and less than or equal to 50 degrees. The air guide valve adopts the angle range, so that on one hand, the air of the heat radiation fan can be effectively guided to enter the smoke ventilator volute, and meanwhile, the air in the smoke ventilator volute is prevented from overflowing outwards through the ventilation opening.

Further preferably, the length B of the air guide valve is in the range of 10 mm-60 mm.

Further preferably, a volute tongue is arranged on the volute annular wall, the vertical distance between the edge closest to the impeller and the peripheral surface of the impeller on the air guide valve is L1, the vertical distance between the edge closest to the impeller and the peripheral surface of the impeller is L2, and the L1-L2 is more than or equal to 0 and less than or equal to 6mm.

Still more preferably, the vent is provided at a front section of the volute annular wall, the air guide valve is mounted at a front side edge of the vent, the length of the air guide valve changes along with the position change of the vent, the shorter the vent is relatively close to the root of the volute tongue, the longer the vent is relatively far away from the volute tongue, and the longer the air guide valve is. By the arrangement, hot air blown out by the heat dissipation fan can smoothly enter the volute, and meanwhile, when back pressure exists at the air outlet of the fan, the air in the volute can be prevented from overflowing from the vent.

In order to enable air flow blown out by the heat dissipation fan to smoothly enter the oil fume suction fan, the oil fume suction fan and the heat dissipation fan are centrifugal fans, and the impeller central shaft of the oil fume suction fan is parallel to the impeller central shaft of the heat dissipation fan.

Preferably, the oil fume suction module comprises an upper box body and an air inlet body arranged at the bottom of the upper box body, the oil fume suction fan is arranged in the upper box body, and a fume inlet communicated with an air inlet of the oil fume suction fan is formed in the air inlet body.

The heat dissipation module can have various mounting structures, preferably, the heat dissipation module is arranged at the top of the upper box body, the heat dissipation fan is arranged above the oil fume suction fan, and the air outlet of the heat dissipation fan faces downwards and faces the ventilation opening.

The heat dissipation module and the inner machine module can have a plurality of mounting structures, preferably, the heat dissipation module comprises a condenser and the heat dissipation fan, the inner machine module comprises an evaporator and the inner machine fan, and the heat dissipation module and the inner machine module are adjacently arranged.

Compared with the prior art, the utility model has the advantages that: the refrigerating type fume exhaust fan is characterized in that the ventilation opening of the surrounding wall of the spiral case guides hot air of a heat dissipation channel into the spiral case of the fume exhaust fan, negative pressure generated by rotation of the fume exhaust fan sucks the hot air into the spiral case, on one hand, the work efficiency of an air conditioner is improved, on the other hand, the hot air is blown into the spiral case to clean the spiral case and the impeller, in addition, an air guide valve arranged at the ventilation opening is provided with an internal pressure sensor and an external pressure sensor, and a controller can adjust the opening of the air guide valve according to the differential state of the internal pressure and the external pressure, so that the air guide valve is in an optimal state.

Drawings

Fig. 1 is a schematic structural view of a range hood according to an embodiment of the present utility model;

Fig. 2 is a side view of a range hood according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram illustrating the connection of an air conditioning assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of an installation structure of an air guiding valve according to an embodiment of the present utility model;

fig. 5 is a control logic diagram of a control method according to an embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 4, the refrigerating range hood of the present embodiment includes a range hood module 1, a compressor 2, a heat dissipation module 3 and an inner hood module 4, the range hood module 1 includes a range hood fan 11, an upper box 12 and an air inlet body 13, the range hood fan 11 is installed in the upper box 12, the air inlet body 13 is installed at the bottom of the upper box 12, and a smoke inlet communicated with an air inlet of the range hood fan 11 is opened on the air inlet body 13. The fume exhaust fan 11 is a centrifugal fan and comprises a volute 111, an impeller 112 and a volute tongue 113, wherein the volute tongue 113 is arranged on a volute annular wall 114 and is close to a fan air outlet.

The compressor 2 is installed above the air inlet body 13 and on the right side of the upper box body 12, and the internal machine module 4 is arranged above the compressor 2. The heat dissipation module 3 is arranged at the top of the upper box 12, the heat dissipation module 3 and the inner machine module 4 are adjacently arranged, and the heat dissipation module 3 and the inner machine module 4 share an air inlet. The heat radiation module 3 comprises a condenser 32 and a heat radiation fan 31, the inner machine module 4 comprises an evaporator 42 and an inner machine fan 41, and the compressor 2, the condenser 32 and the evaporator 42 are communicated through a refrigerant pipeline 5. The compressor 2, the condenser 32 and the evaporator 42 constitute an air conditioning assembly, and the specific operation principle thereof is the same as that of the existing air conditioner, and will not be described again. An inner machine air outlet 43 is formed in the upper portion of the air inlet body 13, an air outlet of the inner machine fan 41 is in fluid communication with the inner machine air outlet 43 through an air guide channel 44, and cold air is blown out from the inner machine air outlet 43 when the air conditioner works in a refrigerating mode, so that cooking experience of a user is improved.

The heat dissipation fan 31 of the present embodiment is a centrifugal fan, and the impeller center axis of the heat dissipation fan 31 is parallel to the impeller center axis of the oil smoke absorbing fan 11. The volute annular wall 114 of the fume exhaust fan 11 is provided with a vent 115, the heat radiation fan 31 is arranged above the fume exhaust fan 11, the air outlet of the heat radiation fan 31 faces downwards and faces the vent 115, and the air outlet of the heat radiation fan 31 is in fluid communication with the vent 115. In this embodiment, the ventilation opening 115 is formed at the front section of the annular wall 114 of the volute and is close to the root of the volute tongue 113, when there is back pressure at the outlet of the smoke machine, the wind in the volute 111 will not overflow from the ventilation opening 115, and the position of the ventilation opening 115 needs to be as close to the volute tongue 113 as possible at 1/4 of the front section of the annular wall.

In this embodiment, the vent 115 is provided at the position 1/4 of the front section of the volute annular wall 114, and the air guide valve 6 is mounted at the vent 115, and the air guide valve 6 is used for guiding the hot air blown out by the heat dissipation fan 31 into the volute 111. Specifically, the air guide valve 6 includes a mounting portion mounted on the front edge of the ventilation opening 115, and an air guide portion that is flat and extends from front to rear. The range of the included angle A between the tangent line of the volute annular wall 114 at the root of the air guide valve 6 and the air guide part of the air guide valve 6 is more than or equal to 10 degrees and less than or equal to 50 degrees. The length B of the air guiding part of the air guiding valve 6 is in the range of 10mm less than or equal to B less than or equal to 60mm, the B value is related to the position of the vent hole 115 of the volute annular wall 114, the closer the vent hole 115 is to the volute tongue 113, the B value can be relatively reduced, and conversely, the B value is increased. In addition, in order to obtain the optimal air guiding performance of the air guiding valve, the A value and the B value have certain relevance, the larger the A value is, the smaller the B value is, and conversely, the smaller the A value is, the larger the B value is.

Note that the vertical distance between the edge closest to the impeller 112 and the peripheral surface of the impeller 112 on the air guiding valve 6 is L1, and the vertical distance between the edge closest to the impeller 112 of the volute tongue 113 and the peripheral surface of the impeller 112 is L2, so that L1 and L2 need to satisfy 0.ltoreq.l1-l2.ltoreq.6mm, and l1=l2 is preferable.

An inner pressure sensor 81 is mounted on the inner side wall of the air guide valve 6 facing the inside of the scroll case 111, and an outer pressure sensor 82 is mounted on the outer side wall of the air guide valve 6 facing the outside of the scroll case 111, the inner pressure sensor 81 detecting the pressure F1 of the air guide valve 6, and the outer pressure sensor detecting the pressure F2 outside the air guide valve 6.

When the range hood works, the pressure value F1 read by the inner side pressure sensor 81 and the pressure value F2 read by the outer side pressure sensor 82 are converted into electric signals to be transmitted to the controller, the controller outputs an instruction to the motor 7, and the motor 7 drives the air guide valve 6 to rotate according to the received instruction to adjust the rotation angle of the air guide valve 6, so that the air guide valve 6 is always at the optimal angle position. When l1=l2, the extreme end of the air guiding part of the air guiding valve 6 and the lowest part of the volute tongue are located on a concentric circle, and at this time, Δf=fn, the pressure difference Δf is the largest, which is most beneficial for the air intake of the heat dissipating fan 31. When Δf=0, the air guide valve 6 is in the critical position, the inside and outside pressures at the vent 115 are balanced, and the vent 115 does not intake air.

As shown in fig. 5, the control method of the refrigeration type range hood of the embodiment specifically includes the following steps:

s1, starting;

s2, if a user starts the range hood, entering steps S4 to S10;

s3, if the user only starts the refrigerating function, the steps S11 to S16 are carried out;

S4, starting to operate the oil smoke suction fan;

S5, judging whether a user starts a refrigeration function or not;

If so, entering step S6;

if not, returning to the step S4;

S6, driving the air guide valve 6 to open by the motor 7, detecting the pressure F1 by the inner side pressure sensor 81, detecting the pressure F2 by the outer side pressure sensor 82, and obtaining an inner side pressure difference delta F=F1-F2;

S7, judging whether the delta F is the maximum value;

If yes, go to step S8;

if not, returning to the step S6;

S8, whether delta F is not more than Fn;

If yes, go to step S9;

If not, the motor 7 drives the air guide valve 6 to rotate, and the step S8 is returned to;

S9, stopping the motor 7, and keeping the air guide valve 6 in the existing state;

s10, if the user adjusts the gear of the smoke machine, returning to the step S7;

If the user turns off the cooling function, the air guide valve 6 is turned off, and the flow ends.

S11, driving an air guide valve 6 to open by a motor 7, detecting the pressure F1 by an inner side pressure sensor 81 and the pressure F2 by an outer side pressure sensor 82, and detecting the difference delta F=F1-F2 between the inner side pressure and the outer side pressure by default weak gear of the range hood;

s12, judging whether delta F is the maximum value;

if yes, go to step S13;

If not, returning to the step S11;

S13, whether delta F is not more than Fn;

If yes, go to step S14;

If not, the motor 7 drives the air guide valve 6 to rotate, and the step S13 is returned to;

s14, stopping the motor 7, and keeping the air guide valve 6 in the existing state;

S15, closing a refrigeration function by a user;

s16, closing the air guide valve 6, and ending the flow.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

The term "fluid communication" as used herein refers to a spatial positional relationship between two parts or portions, hereinafter collectively referred to as a first portion and a second portion, respectively, that is, a fluid gas, a liquid, or a mixture of both can flow along a flow path from the first portion to the second portion, or can be directly communicated with each other between the first portion and the second portion, or can be indirectly communicated with each other between the first portion and the second portion through at least one third member, which can be a fluid channel such as a pipe, a channel, a conduit, a flow guide, a hole, a groove, or the like, or can be a chamber allowing a fluid to flow through, or a combination thereof.

Claims (8)

1. The utility model provides a refrigeration formula range hood, includes oil smoke absorption module (1), compressor (2), heat dissipation module (3) and interior machine module (4), oil smoke absorption module (1) is including oil smoke absorption fan (11), compressor (2), heat dissipation module (3) and interior machine module (4) are linked together through refrigerant pipeline (5), the outside of oil smoke absorption fan (11) is located in heat dissipation module (3) and interior machine module (4), oil smoke absorption fan (11) include spiral case (111) and install impeller (112) inside spiral case (111), heat dissipation module (3) have heat dissipation fan (31), its characterized in that: the oil fume exhaust fan is characterized in that a vent (115) is formed in a volute annular wall (114) of the oil fume exhaust fan (11), an air guide valve (6) used for guiding hot air blown by a heat radiation fan (31) into the volute (111) is arranged at the vent (115), an inner side pressure sensor (81) is arranged on the inner side wall of the air guide valve (6) facing the inside of the volute (111), an outer side pressure sensor (82) is arranged on the outer side wall of the air guide valve (6) facing the outside of the volute (111), a controller and a motor (7) for driving the air guide valve (6) to rotate are further included, the controller can receive output signals of the inner side pressure sensor (81) and the outer side pressure sensor (82), and control the motor (7) according to the received signals, so that the rotation angle of the air guide valve (6) is adjusted.

2. The refrigerated extractor hood of claim 1 wherein: the air guiding part of the air guiding valve (6) is a flat plate, and the range of an included angle A between the tangent line of the volute casing annular wall (114) at the root part of the air guiding valve (6) and the air guiding valve (6) is more than or equal to 10 degrees and less than or equal to 50 degrees.

3. A refrigerated extractor hood according to claim 2, characterized in that: the length B of the air guide valve (6) is in the range of more than or equal to 10mm and less than or equal to 60mm.

4. A refrigerated extractor hood according to claim 3, characterized in that: a volute tongue (113) is arranged on the volute annular wall (114), the vertical distance between the edge closest to the impeller (112) on the air guide valve (6) and the peripheral surface of the impeller (112) is L1, the vertical distance between the edge closest to the impeller (112) of the volute tongue (113) and the peripheral surface of the impeller (112) is L2, and the vertical distance is more than or equal to 0 and less than or equal to L1-L2 and less than or equal to 6mm.

5. The refrigerated extractor hood of claim 4 wherein: the vent (115) is arranged at the front section of the volute annular wall (114), the air guide valve (6) is arranged at the front side edge of the vent (115), the length of the air guide valve (6) changes along with the position change of the vent (115), the vent (115) is relatively close to the root of the volute tongue (113), the shorter the air guide valve (6) is, the longer the length of the air guide valve (6) is relatively far away from the volute tongue (113).

6. A refrigerated extractor hood according to any of claims 1 to 5, characterized in that: the oil fume suction module (1) comprises an upper box body (12) and an air inlet body (13) arranged at the bottom of the upper box body (12), the oil fume suction fan (11) is arranged in the upper box body (12), and a fume inlet communicated with an air inlet of the oil fume suction fan (11) is formed in the air inlet body (13).

7. The refrigerated extractor hood of claim 6 wherein: the heat dissipation module (3) is arranged at the top of the upper box body (12), the heat dissipation fan (31) is arranged above the oil fume suction fan (11), and an air outlet of the heat dissipation fan (31) faces downwards and faces the ventilation opening (115).

8. The refrigerated extractor hood of claim 7 wherein: the heat dissipation module (3) comprises a condenser (32) and the heat dissipation fan (31), the inner machine module (4) comprises an evaporator (42) and an inner machine fan (41), and the heat dissipation module (3) and the inner machine module (4) are adjacently arranged.