Oil fume pumping and discharging equipment

Abstract

The utility model belongs to the technical field of electric appliances, and particularly discloses oil fume pumping and discharging equipment. The oil smoke pumping and discharging equipment comprises a machine shell with a smoke inlet and a fan arranged in the machine shell, a smoke inlet channel is formed between an air inlet of the fan and the smoke inlet, the oil smoke pumping and discharging equipment further comprises a sound wave refrigerating device, and the sound wave refrigerating device is installed in the machine shell and comprises a refrigerating cavity and a sound wave generating device. The refrigeration cavity is provided with a refrigeration cavity body, an air inlet and an air outlet, the air inlet and the air outlet are both communicated with the refrigeration cavity body, the air inlet is used for introducing air into the refrigeration cavity body, the sound wave generating device is used for sending sound wave pulses into the refrigeration cavity body so as to compress and refrigerate air in the refrigeration cavity body, and the air outlet is used for discharging the refrigerated refrigeration air to the smoke inlet channel. According to the oil fume pumping and discharging equipment, the oil fume condensation effect can be improved, the probability that grease is attached to the draught fan is reduced, and pollution of discharged oil fume to the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to a fume extraction device. Background Art

[0002] Fume extraction equipment such as range hoods and integrated stoves are one of the indispensable electrical appliances in modern home life. They can effectively extract cooking fumes to purify the cooking environment and enhance the cooking experience.

[0003] When the oil fume extraction equipment is in operation, the high-temperature oil fume enters the smoke collecting chamber through the smoke outlet of the oil fume extraction equipment, and then is discharged to the external environment through the fan. Since the oil fume contains a lot of grease, direct discharge will cause serious environmental pollution, and it is easy for a large amount of grease to accumulate in the fan volute, affecting the long-term performance of the fan. In order to reduce the grease content in the oil fume, the prior art usually sets a filter at the smoke outlet or in the smoke collecting chamber to condense the oil fume to reduce the grease content in the oil fume. However, the condensation effect of the filter on the oil fume is relatively general, and it is difficult to meet the demand for oil fume condensation.

[0004] Therefore, there is an urgent need for a fume extraction device to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide an oil fume exhaust device, which can increase the condensation effect of the oil fume entering the smoke collecting chamber, reduce the adhesion of the oil fume to the fan, and reduce the pollution of the exhaust oil fume to the environment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A fume extraction device comprises a casing with a smoke inlet and a fan arranged inside the casing, a smoke inlet channel is formed between the air inlet and the smoke inlet of the fan, and also comprises a sonic refrigeration device, which is installed inside the casing. The sonic refrigeration device comprises a refrigeration cavity and a sonic wave generating device. The refrigeration cavity has a refrigeration cavity, an air inlet and an air outlet. The air inlet and the air outlet are both connected to the refrigeration cavity. The air inlet is used to introduce gas into the refrigeration cavity. The sonic wave generating device is used to send sonic wave pulses into the refrigeration cavity to compress and cool the air in the refrigeration cavity. The air outlet discharges the refrigerated refrigeration gas to the smoke inlet channel.

[0008] As an optional technical solution for oil fume extraction equipment, the sound wave generating device includes:

[0009] A noise collecting device, the noise collecting device is used to collect the noise inside the casing and send noise sound wave pulses to the refrigeration cavity;

[0010] and / or, an ultrasonic generator for sending ultrasonic pulses to the refrigeration cavity.

[0011] As an optional technical solution for oil fume extraction equipment, the noise collection device and the ultrasonic generator are respectively arranged on opposite sides of the refrigeration cavity.

[0012] As an optional technical solution for oil fume extraction equipment, the refrigeration cavity has a first installation cavity separated from the refrigeration cavity, the ultrasonic generator is arranged in the first installation cavity and the ultrasonic transmitting end of the ultrasonic generator extends into the refrigeration cavity;

[0013] And / or, the refrigeration cavity has a second installation cavity separated from the refrigeration cavity, the noise collecting device is installed in the second installation cavity, the cavity wall of the second installation cavity is provided with a sound hole and a noise collecting hole, the sound hole is connected with the refrigeration cavity, the noise emitting end of the noise collecting device is opposite to the sound hole, and the noise collecting hole is connected with the inner cavity of the casing.

[0014] As an optional technical solution for oil fume extraction equipment, a plurality of noise collecting holes are provided in the refrigeration cavity. The noise collecting holes are arranged opposite to the noise collecting end of the noise collecting device. The noise collecting holes are located on the side of the refrigeration cavity facing the fan.

[0015] As an optional technical solution for oil fume extraction equipment, the air inlet is provided with an air inlet unsealing unit, which can be controlled to open or close the air inlet;

[0016] And / or, the air outlet is provided with an air outlet unsealing unit, and the air outlet unsealing unit can be controlled to open or close the air outlet.

[0017] As an optional technical solution for oil fume extraction equipment, a detection device is provided in the refrigeration cavity, and the detection device includes a temperature detection device and / or an air pressure detection device. The detection device is communicatively connected to the controller of the oil fume extraction equipment. The controller controls the action of the air inlet unsealing unit and / or the air outlet unsealing unit according to the detection result of the detection device.

[0018] As an optional technical solution for oil fume extraction equipment, an air inlet is opened on the casing, and the air inlet is connected to the air inlet.

[0019] As an optional technical solution for oil fume extraction equipment, the refrigeration cavity has an air inlet side wall, an air inlet is provided on the air inlet side wall, and the air inlet side wall is fitted with a casing side wall having an air inlet.

[0020] As an optional technical solution for oil fume extraction equipment, a mounting plate is connected to one side of the refrigeration cavity, the edge of the mounting plate protrudes outward from the refrigeration cavity, and the mounting plate is detachably connected to the housing;

[0021] And / or, an inspection port is provided on one side of the refrigeration cavity, and an inspection plate is provided on the inspection port, and the inspection plate can close the inspection port to seal the refrigeration cavity, and the inspection plate can open the inspection port to open the refrigeration cavity.

[0022] The beneficial effects of the utility model are:

[0023] The oil fume extraction device provided by the utility model can compress and cool the air in the refrigeration cavity through the sound wave generating device, and discharge the refrigerated gas into the smoke inlet channel to realize the condensation of the oil fume and enhance the condensation effect of the oil fume, thereby reducing the oil content in the oil fume flowing to the fan, reducing the adhesion of oil to the fan, improving the long-term performance of the fan, and improving the user experience of the range hood; at the same time, due to the increased oil condensation effect, the oil content in the exhausted oil fume can be reduced, reducing pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the oil fume extraction device provided by the embodiment of the utility model;

[0025] Figure 2 It is a cross-sectional view of the oil fume extraction device provided by the embodiment of the utility model in a cross-section;

[0026] Figure 3 is a cross-sectional view of the oil fume extraction device provided by an embodiment of the utility model in another cross-sectional plane;

[0027] Figure 4 yes Figure 3 A partial enlarged view of point I in the middle;

[0028] Figure 5 yes Figure 3 A partial enlarged view of the J in the middle;

[0029] Figure 6 It is a structural schematic diagram of the acoustic wave refrigeration device provided by an embodiment of the utility model;

[0030] Figure 7 It is a cross-sectional view of the acoustic wave refrigeration device provided by an embodiment of the utility model.

[0031] The following are marked in the figure:

[0032] 1. Acoustic wave refrigeration device; 11. Refrigeration cavity; 111. Refrigeration cavity; 112. First installation cavity; 113. Second installation cavity; 1131. Acoustic hole; 114. Air inlet; 115. Air outlet; 116. Noise collection hole; 12. Noise collection device; 13. Ultrasonic generator; 14. Inspection panel; 15. Installation panel;

[0033] 2. Casing; 21. Smoke collecting hood; 211. Smoke inlet; 212. Smoke collecting chamber; 213. Air inlet; 22. Bellows;

[0034] 3. Fan. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] The present embodiment provides an oil fume extraction device, which can be used in the kitchen environment of home life, and can also be used in cooking scenes such as restaurants and canteens, to achieve the extraction of cooking oil fumes, reduce the pollution of the exhaust oil fume to the environment, and improve the user experience of the oil fume extraction device.

[0040] Specifically, Figures 1 to 3As shown, the oil fume extraction equipment includes a housing 2, a fan 3, an acoustic refrigeration device 1 and a controller. Among them, the housing 2 has a smoke inlet 211, a smoke collecting chamber 212 and a smoke exhaust port which are connected in sequence. The fan 3 is installed inside the housing 2 and is located between the smoke inlet 211 and the smoke exhaust port. An air inlet channel is formed between the air inlet of the fan 3 and the smoke inlet 211. When the fan 3 is running, a negative pressure is formed at the smoke inlet 211, so that the external oil fume passes through the smoke inlet 211, the smoke collecting chamber 212 and the fan 3 in sequence and then is discharged from the smoke exhaust port. The acoustic refrigeration device 1 is arranged in the housing 2 to generate a refrigerant gas through the principle of acoustic wave compression refrigeration, and the refrigerant gas is discharged into the smoke inlet channel to cool and condense the oil fume, thereby reducing the oil content in the oil fume. The fan 3 and the acoustic refrigeration device 1 are both connected to the controller in communication so that the controller controls the operation of the fan 3 and the acoustic refrigeration device 1.

[0041] like Figure 3 , Figure 6 and Figure 7 As shown, the acoustic wave refrigeration device 1 includes a refrigeration cavity 11 and an acoustic wave generating device. The refrigeration cavity 11 has a refrigeration cavity 111, an air inlet 114 and an air outlet 115. The air inlet 114 and the air outlet 115 are both connected to the refrigeration cavity 111. The air inlet 114 is used to introduce gas into the refrigeration cavity 111. The acoustic wave generating device is used to send acoustic wave pulses into the refrigeration cavity 111 to compress and cool the air in the refrigeration cavity 111. The air outlet 115 discharges the refrigerated refrigeration gas to the smoke inlet channel.

[0042] The sound wave generating device is communicatively connected with the controller. When the fan 3 is running, the gas enters the refrigeration cavity 111 through the air inlet 114. The controller controls the operation of the sound wave generating device. The sound wave generating device sends sound wave pulses to the refrigeration cavity 111. The sound wave pulses compress the air in the refrigeration cavity 111 to realize gas refrigeration. The refrigerated refrigeration gas is discharged into the smoke inlet channel through the air outlet 115 to cool the oil smoke flowing into the smoke inlet channel.

[0043] The oil fume extraction equipment provided in the present embodiment can compress and cool the air in the refrigeration cavity 111 through the sound wave generating device, and discharge the refrigerated refrigeration gas into the smoke inlet channel to realize the cooling of the oil fume and enhance the condensation effect of the oil contained in the oil fume, thereby reducing the oil content in the oil fume flowing to the fan 3, reducing the adhesion of oil to the fan 3, improving the long-term performance of the fan 3, and improving the user experience of the range hood; at the same time, due to the increased oil condensation effect, the oil content in the discharged oil fume can be reduced, reducing pollution to the environment.

[0044] It is worth noting that the principle of acoustic refrigeration is that the amplitudes of acoustic waves are different during propagation. When acoustic waves propagate in the gas, the air is conducted from the area with small amplitude to the area with large amplitude, compressing the air and thus cooling the gas. The principle of acoustic refrigeration is a well-known principle and will not be described in detail here.

[0045] like Figures 1 to 3 As shown, in this embodiment, the housing 2 includes a smoke collecting hood 21 and a wind box 22. A smoke collecting chamber 212 is provided in the smoke collecting hood 21. A smoke inlet 211 is provided at the bottom of the smoke collecting chamber 212. The acoustic refrigeration device 1 is installed in the smoke collecting chamber 212. The fan 3 is provided in the wind box 22. A smoke exhaust port is provided at the top of the wind box 22. That is, in this embodiment, the oil smoke exhaust device is a top suction range hood.

[0046] However, it is worth noting that in other embodiments, the oil fume extraction device may also be a side suction range hood, a top-side double suction range hood, an island-type range hood, or an integrated stove, as long as there is space inside the oil fume extraction device to install the acoustic refrigeration device 1. This embodiment takes the oil fume extraction device as a top suction range hood as an example to introduce the structure of the acoustic refrigeration device 1 and its arrangement inside the housing 2, but the utility model does not limit the type of range hood.

[0047] In this embodiment, two smoke inlets 211 are arranged at intervals along the left-right direction on the bottom surface of the smoke collecting hood 21, and the acoustic wave refrigeration device 1 is arranged between the two smoke inlets 211, so that the acoustic wave refrigeration device 1 can be installed in the smoke collecting chamber 212 while reducing the influence of the installation of the acoustic wave refrigeration device 1 on the extraction of oil smoke. In other embodiments, the installation position of the acoustic wave refrigeration device 1 can be specifically arranged according to the model and specific structure of the range hood.

[0048] like Figure 3 , Figure 4 and Figure 6 As shown, the housing 2 is provided with an air inlet 213, which is connected to the air inlet 114. Since high-temperature smoke enters the housing 2 when the oil fume extraction device is in operation, the temperature inside the housing 2 is usually higher than the temperature outside the housing 2. The housing 2 is provided with the air inlet 213, so that the external cold air can enter the refrigeration cavity 111 through the air inlet 213 and the air inlet 114 in sequence, thereby reducing the gas temperature in the refrigeration cavity 111, thereby reducing the time required for the gas to be compressed to a preset temperature, improving the efficiency of gas compression refrigeration, and then increasing the amount of refrigeration gas discharged into the smoke inlet channel, thereby improving the condensation effect on oil fume.

[0049] In another embodiment, the housing 2 may not be provided with the air inlet 213, and the air inside the housing 2 directly enters the refrigeration cavity 111 through the air inlet 114. In another embodiment, two air inlets 114 may be provided, one of which is an external air inlet 114 and the other is an internal air inlet 114, the external air inlet 114 is connected to the air inlet 213 of the housing 2, and the internal air inlet 114 is connected to the inner cavity of the housing 2.

[0050] In order to further reduce the probability of the air inside the casing 2 entering the refrigeration cavity 111, the refrigeration cavity 11 has an air inlet side wall, on which an air inlet 114 is provided, and the air inlet side wall is fitted with the side wall of the casing 2 where the air inlet 213 is provided. By fitting the air inlet side wall with the side wall of the casing 2 where the air inlet 213 is located, it is possible to prevent the gas inside the casing 2 from entering the air inlet 114 through the gap between the air inlet side wall and the casing 2 as much as possible, and more effectively ensure that only external air can enter the refrigeration cavity 111 through the air inlet 213 and the air inlet 114.

[0051] In this embodiment, the top of the smoke hood 21 is provided with the above-mentioned air inlet 213, and the top of the refrigeration cavity 11 partially forms an air inlet side wall. In other embodiments, the setting position of the air inlet 213 can be set according to the specific type of the fume extraction setting. For example, for a side-suction range hood, the acoustic refrigeration device 1 can be set close to the left and right side panels of the smoke hood 21, so that the air inlet 213 can be set on the left or right side wall of the smoke collection cavity 212. The setting position of the air inlet side wall corresponds to the setting position of the air inlet 213.

[0052] In this embodiment, the air inlet 114 and the air inlet 213 are both arranged in a long strip shape and are arranged in parallel in multiple numbers, so as to increase the air intake efficiency and reduce the probability of external dust or impurities entering the refrigeration cavity 111. In other embodiments, the air inlet 114 and / or the air inlet 213 may also be circular, rectangular or other shaped holes.

[0053] like Figure 5 and Figure 6 As shown, in this embodiment, the air outlet 115 is arranged at the rear side of the refrigeration cavity 11. However, it can be understood that the arrangement position of the air outlet 115 can be arranged according to the type of the oil fume extraction equipment and the specific installation position of the acoustic refrigeration device 1 inside the housing 2, as long as the refrigeration gas ejected from the air outlet 115 acts on the flow path of the oil fume flowing to the air inlet of the fan 3, the utility model does not impose specific restrictions on the arrangement position of the air outlet 115.

[0054] like Figure 3 and Figure 7As shown, in order to enhance the effect of acoustic wave compression refrigeration, in this embodiment, the acoustic wave generating device includes a noise collecting device 12 and an ultrasonic generator 13. The noise collecting device 12 collects the internal noise of the casing 2 and sends noise acoustic wave pulses to the refrigeration cavity 111. The ultrasonic generator 13 is used to send ultrasonic wave pulses to the refrigeration cavity 111. The noise acoustic wave pulses and the ultrasonic wave pulses are arranged in a non-interference manner or in a superimposed manner.

[0055] The above-mentioned arrangement enables the acoustic wave refrigeration device 1 to have two sound sources, thereby enhancing the acoustic wave refrigeration effect, thereby reducing the temperature of the refrigerant gas discharged from the air outlet 115 while keeping the temperature of the gas entering the refrigeration cavity 111 unchanged, thereby improving the refrigeration effect on the oil fume; at the same time, by collecting the noise inside the casing 2 to realize the emission of the acoustic wave pulse, the noise intensity inside the casing 2 can be weakened at the same time, thereby reducing the operating noise of the oil fume extraction equipment and improving the user experience of the oil fume extraction equipment; furthermore, an ultrasonic generator is used to send ultrasonic pulses for air compression refrigeration, which has a better compression refrigeration effect and will not increase the operating noise of the acoustic wave generator, thereby further improving the user experience of the oil fume extraction equipment.

[0056] In another embodiment, the sound wave generating device may only include the noise collecting device 12, or only include the ultrasonic generator 13. In another embodiment, the sound wave generating device may also be a sound wave generating device capable of generating other frequencies.

[0057] The noise collecting device 12 has a noise collecting end and a noise emitting end. The noise collecting end is used to collect the noise inside the housing 2. The noise collecting device 12 has a noise enhancement structure. The noise enhancement structure is used to enhance the amplitude of the noise collected by the noise collecting end. The enhanced noise sound wave is sent from the noise emitting end to the refrigeration cavity 111 to enhance the compression and refrigeration effect of the gas in the refrigeration cavity 111. Furthermore, the noise collecting end can collect noise of a specific frequency to avoid interference between noise sound wave pulses and ultrasonic pulses. The noise collecting device 12 with the functions of collection, noise increase and pulse emission is a prior art, and the specific structure of the noise collecting device 12 is not limited or elaborated here.

[0058] In this embodiment, the noise collecting device 12 and the ultrasonic generator 13 are arranged on opposite sides of the refrigeration cavity 11, so as to improve the efficiency of compression refrigeration while ensuring the acoustic refrigeration effect, so that the refrigeration cavity 111 can be cooled as evenly as possible. In other embodiments, the noise collecting device 12 and the ultrasonic generator 13 can also be arranged on the same side of the refrigeration cavity 11 or at other positions, which is not limited by the present invention.

[0059] It is worth noting that the frequency and propagation direction of the noise sound wave pulse and the ultrasonic sound wave pulse can be set according to demand, as long as the noise sound wave pulse and the ultrasonic wave pulse are not attenuated due to superposition when propagating in the refrigeration cavity 11.

[0060] The refrigeration cavity 11 has two installation cavities separated from the refrigeration cavity 111, the two installation cavities are respectively a first installation cavity 112 and a second installation cavity 113, the ultrasonic generator 13 is installed in the first installation cavity 112 and the sound wave emitting end of the ultrasonic generator 13 extends into the refrigeration cavity 111. The noise collecting device 12 is installed in the second installation cavity 113, and the cavity wall of the second installation cavity 113 is provided with a sound hole 1131 and a noise collecting hole 116, the sound hole 1131 is communicated with the refrigeration cavity 111, and the noise emitting end of the noise collecting device 12 is directly opposite to the sound hole 1131, so that the noise sound wave pulse generated by the noise generating device can enter the refrigeration cavity 111 through the sound hole 1131. The noise collecting hole 116 is communicated with the inner cavity of the housing 2, so that the noise generating device can collect the noise inside the housing 2 through the noise collecting hole 116. By providing the first installation cavity 112 and the second installation cavity 113 , the influence of compression refrigeration on the noise collecting device 12 and the ultrasonic generator 13 can be reduced, and the use reliability of the noise collecting device 12 and the ultrasonic generator 13 can be improved.

[0061] like Figure 2 , Figure 3 and Figure 5 As shown, a noise collection hole 116 is provided on one side of the refrigeration cavity 11 facing the fan 3. This arrangement can enhance the collection of the operating noise of the fan 3 and improve the effect of noise collection. In this embodiment, the noise collection hole 116 is arranged at the top of the refrigeration cavity 11. In other embodiments, the noise collection hole 116 can also be arranged at other positions, as long as the noise collection device 12 can collect the operating noise of the oil fume extraction equipment.

[0062] A plurality of noise collection holes 116 are provided to reduce the size of a single noise collection hole 116 while ensuring the noise collection effect, thereby reducing the probability of oil smoke entering the second installation cavity 113 and improving the operational reliability of the noise collection device 12. The noise collection holes 116 can be arranged in an array or in a strip shape and arranged side by side.

[0063] like Figure 3 , Figure 6 and Figure 7As shown, in order to improve the acoustic wave compression refrigeration effect, in the present embodiment, an air inlet unsealing unit is provided on the air inlet 114, and an air outlet unsealing unit is provided on the air outlet 115. Both the air inlet unsealing unit and the air outlet unsealing unit are communicatively connected with the controller, and the controller can control the air inlet unsealing unit to open or close the air inlet 114, and control the air outlet unsealing unit to open or close the air outlet 115.

[0064] During the operation of the oil fume extraction device, the acoustic wave refrigeration device 1 performs cyclic refrigeration: first, the controller controls the air inlet 114 to open so that the gas enters the refrigeration cavity 111 through the air inlet 114. At this time, the air outlet 115 and the acoustic wave generating device are both in a closed state; when the air intake state in the refrigeration cavity 111 meets the preset air intake closing condition, the air inlet 114 is closed to seal the refrigeration cavity 111, and the controller controls the acoustic wave generating device to operate so that the acoustic wave pulses are applied to the closed refrigeration cavity 111. The gas in the refrigeration cavity 111 is compressed and cooled; when the compression refrigeration reaches a preset refrigeration state, the sound wave generating device is turned off and the air outlet 115 is opened, and the refrigeration gas is ejected into the smoke inlet channel under the action of the pressure difference between the smoke inlet channel and the refrigeration cavity 111, so as to cool the oil smoke in the smoke inlet channel; when the state in the refrigeration cavity 111 reaches a preset air outlet closing state, the air outlet 115 is closed, and the air inlet 114 is opened, so that the external air can be taken in under the action of the internal and external pressure difference of the refrigeration cavity 111, thereby realizing cyclic refrigeration.

[0065] The above arrangement enables the ultrasonic generating device to compress and cool the air in the closed refrigeration cavity 111, thereby improving the efficiency and effect of compression refrigeration. At the same time, the air intake of the refrigeration cavity 111 and the ejection of the refrigeration gas to the smoke inlet channel through the air outlet 115 can be achieved through the internal and external pressure difference of the refrigeration cavity 111, without the need to set up an additional driving structure to drive the air flow, thereby simplifying the structure of the acoustic wave refrigeration device 1, reducing the volume of the acoustic wave refrigeration device 1, and reducing the cost of the acoustic wave refrigeration device 1. In other embodiments, when the acoustic wave generating device cools the refrigeration cavity 111, the air outlet 115 and / or the air inlet 114 may be in an open state.

[0066] The air inlet unsealing unit and the air outlet unsealing unit can both adopt a structure in which a baffle cooperates with a driving motor, that is, the driving motor drives the baffle to slide or rotate to realize the switching of the corresponding air inlet 114 or air outlet 115 between the closed state and the open state; or a valve structure can be adopted. The utility model does not introduce the specific structure of the air inlet unsealing unit and the air outlet unsealing unit.

[0067] In order to better control the operation of the acoustic wave refrigeration device 1, a detection device is provided in the refrigeration cavity 11. The detection device includes a temperature detection device and / or an air pressure detection device. The detection device is connected to the controller of the oil fume extraction device in communication. The controller controls the operation of the air inlet unsealing unit and / or the air outlet unsealing unit according to the detection result of the detection device. That is, the detection device is used to detect the air pressure and / or temperature of the refrigeration cavity 111, and the detection result is sent to the controller. The controller can judge the gas state in the refrigeration cavity 111 according to the detection result, so as to judge the opening and closing time of the air inlet 114, the air outlet 115 and the acoustic wave generating device.

[0068] The detection device is arranged in the refrigeration cavity 111. In order to install, disassemble and overhaul the structure in the refrigeration cavity 111, an inspection port is provided on the refrigeration cavity 11. An inspection plate 14 is provided at the inspection port. The inspection plate 14 can close the inspection port to seal the refrigeration cavity 111, and the inspection plate 14 can open the inspection port to open the refrigeration cavity 111. The provision of the inspection port and the inspection plate 14 can facilitate maintenance personnel to overhaul the electrical components or other structures in the refrigeration cavity, thereby improving the convenience of use of the acoustic wave refrigeration device 1.

[0069] In order to improve the installation convenience of the acoustic wave refrigeration device 1 inside the housing 2, a mounting plate 15 is connected to one side of the refrigeration cavity 11, and the edge of the mounting plate 15 protrudes outward from the refrigeration cavity 11, and the mounting plate 15 is detachably connected to the housing 2. The mounting plate 15 and the housing 2 can adopt a detachable connection structure such as screw connection or clamping, and the specific connection structure of the mounting plate 15 and the housing 2 of the utility model is not limited.

[0070] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A fume extraction device, comprising a housing (2) having a smoke inlet (211) and a fan (3) arranged inside the housing (2), wherein a smoke inlet channel is formed between the air inlet of the fan (3) and the smoke inlet (211), characterized in that: The invention also comprises an acoustic wave refrigeration device (1), wherein the acoustic wave refrigeration device (1) is installed inside the casing (2), and comprises a refrigeration cavity (11) and an acoustic wave generating device. The refrigeration cavity (11) comprises a refrigeration cavity (111), an air inlet (114) and an air outlet (115), wherein the air inlet (114) and the air outlet (115) are both connected to the refrigeration cavity (111), the air inlet (114) is used to introduce gas into the refrigeration cavity (111), the acoustic wave generating device is used to send acoustic wave pulses into the refrigeration cavity (111) to compress and cool the air in the refrigeration cavity (111), and the air outlet (115) discharges the refrigerated refrigeration gas into the smoke inlet channel.

2. The oil fume extraction device according to claim 1, characterized in that: The sound wave generating device comprises: A noise collecting device (12), the noise collecting device (12) being used to collect the internal noise of the housing (2) and send noise sound wave pulses to the refrigeration cavity (111); And / or, an ultrasonic generator (13) for sending ultrasonic pulses to the refrigeration cavity (111).

3. The oil fume extraction equipment according to claim 2, characterized in that: The noise collecting device (12) and the ultrasonic generator (13) are respectively arranged on two opposite sides of the refrigeration cavity (11).

4. The oil fume extraction device according to claim 2, characterized in that: The refrigeration cavity (11) has a first installation cavity (112) separated from the refrigeration cavity (111); the ultrasonic generator (13) is arranged in the first installation cavity (112) and the ultrasonic transmitting end of the ultrasonic generator (13) extends into the refrigeration cavity (111); And / or, the refrigeration cavity (11) has a second installation cavity (113) separated from the refrigeration cavity (111), the noise collecting device (12) is installed in the second installation cavity (113), the cavity wall of the second installation cavity (113) is provided with a sound hole (1131) and a noise collecting hole (116), the sound hole (1131) is connected to the refrigeration cavity (111), the noise emitting end of the noise collecting device (12) is opposite to the sound hole (1131), and the noise collecting hole (116) is connected to the inner cavity of the housing (2).

5. The oil fume extraction device according to claim 2, characterized in that: The refrigeration cavity (11) is provided with a plurality of noise collecting holes (116), the noise collecting holes (116) being arranged opposite to the noise collecting end of the noise collecting device (12), and the noise collecting holes (116) being located on a side of the refrigeration cavity (11) facing the fan (3).

6. The oil fume extraction device according to any one of claims 1 to 5, characterized in that: The air inlet (114) is provided with an air inlet unsealing unit, and the air inlet unsealing unit can be controlled to open or close the air inlet (114); And / or, the air outlet (115) is provided with an air outlet unsealing unit, and the air outlet unsealing unit can be controlled to open or close the air outlet (115).

7. The oil fume extraction device according to claim 6, characterized in that: The refrigeration cavity (11) is provided with a detection device, the detection device comprising a temperature detection device and / or an air pressure detection device, the detection device is communicatively connected with a controller of the oil fume extraction device, and the controller controls the operation of the air inlet unsealing unit and / or the air outlet unsealing unit according to the detection result of the detection device.

8. The oil fume extraction device according to any one of claims 1 to 5, characterized in that: The housing (2) is provided with an air inlet (213), and the air inlet (213) is communicated with the air inlet (114).

9. The oil fume extraction device according to claim 8, characterized in that: The refrigeration cavity (11) has an air intake side wall, the air intake side wall is provided with the air intake port (114), and the air intake side wall is in contact with the side wall of the casing (2) provided with the air inlet (213).

10. The oil fume extraction device according to any one of claims 1 to 5, characterized in that: A mounting plate (15) is connected to one side of the refrigeration cavity (11), an edge of the mounting plate (15) protrudes outward from the refrigeration cavity (11), and the mounting plate (15) is detachably connected to the housing (2); And / or, an inspection port is provided on one side of the refrigeration cavity (11), and the inspection port is provided with an inspection plate (14), and the inspection plate (14) can close the inspection port to seal the refrigeration cavity (111), and the inspection plate (14) can open the inspection port to open the refrigeration cavity (111).

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