Integrated range hood system

Abstract

This invention relates to the field of kitchen appliance technology, and in particular to an integrated range hood system. The integrated range hood system includes: a heat exchange chamber within a housing comprising a first region and a second region, wherein a phase change evaporator is disposed in the first region and a phase change condenser is disposed in the second region; a fume extraction channel within the housing is located within the first region and is not connected to the heat exchange chamber; the phase change condenser is higher than the phase change evaporator in the height direction of the housing; and a baffle plate is disposed within the second region, arranged along the airflow path between the fresh air inlet and the air outlet of the housing, and downstream of the phase change condenser along the fluid flow direction. By adjusting the airflow direction, the smoothness and uniformity of the airflow are improved, thereby increasing the heat recovery efficiency.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to an integrated range hood system. Background Technology

[0002] Kitchens typically don't have a fresh air system, primarily because in winter, when cooking, the outdoor temperature is lower than the indoor temperature. Directly introducing outdoor air would cause the indoor temperature to drop, leading to discomfort. Kitchen air conditioners with fresh air functions require additional electric auxiliary heating to heat the fresh air, resulting in high energy consumption.

[0003] A phase-change heat exchange component is employed, comprising an evaporator, a condenser, and a circulation pipe connecting the evaporator and condenser, with a height difference between them. In the evaporator, the refrigerant transforms from a liquid to a gaseous state, decreasing its density, and then enters the condenser through the circulation pipe. In the condenser, the refrigerant transforms from a gaseous state to a liquid state, releasing heat and thus heating the surrounding air. Simultaneously, the refrigerant density increases, and it re-enters the evaporator through the circulation pipe, continuing the cycle. This phase-change heat exchange component utilizes the heat from the exhaust gas to heat fresh air, recovering and reusing waste heat from the exhaust gas, thereby reducing energy consumption and contributing to environmental protection.

[0004] The problem is that after fresh air enters the integrated range hood system that uses the aforementioned phase change heat exchange components to heat the fresh air, the airflow effect is poor, resulting in poor heat exchange efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated range hood system to solve, to a certain extent, the technical problem of poor fresh air flow and poor fresh air heat exchange efficiency in related technologies.

[0006] This invention provides an integrated range hood system, comprising: a housing having a fume extraction channel, wherein the housing has a fume inlet and a fume outlet, both of which are in fluid communication with the fume extraction channel; the housing also has a heat exchange chamber, wherein the housing has a fresh air inlet for communication with the outside and an air outlet for communication with the inside, both of which are in fluid communication with the heat exchange chamber; the heat exchange chamber includes a first region and a second region, wherein a phase change evaporator is disposed in the first region and a phase change condenser is disposed in the second region; the fume extraction channel is located in the first region and is not in communication with the heat exchange chamber, and the phase change condenser is higher than the phase change evaporator in the height direction of the housing; and further comprising: a guide plate disposed in the second region, wherein the guide plate is arranged on the airflow path between the fresh air inlet and the air outlet, and, along the fluid flow direction, the guide plate is located downstream of the phase change condenser.

[0007] Furthermore, the air outlet is located on the front side of the housing, and the fresh air inlet is located on the top of the housing; a blower is also provided in the heat exchange chamber, and the air outlet of the blower is connected to the air outlet; the guide plate extends forward and backward, and the rear end of the guide plate is the windward end, and the front end of the guide plate is opposite to the air inlet of the blower.

[0008] Furthermore, the phase change condenser is arranged adjacent to the fresh air inlet, and the baffle plate is at least partially located below the phase change condenser.

[0009] Furthermore, the windward side of the phase change condenser is positioned directly opposite the fresh air inlet, and the projection of the phase change condenser onto the plane where the fresh air inlet is located can cover the fresh air inlet.

[0010] Furthermore, the guide plate has an arc-shaped structure with both ends bent towards the same side, and the guide plate as a whole is inclined forward from top to bottom.

[0011] As an alternative, in the thickness direction of the housing, the rear end of the guide plate is opposite to the rear side of the phase change condenser.

[0012] As an alternative, in the thickness direction of the housing, the rear end of the guide plate is opposite to the middle of the phase change condenser, so as to form a flow channel on the front and rear sides of the guide plate respectively; the guide plate is flat.

[0013] Furthermore, the integrated range hood system also includes: a circulation duct, which is disposed within the heat exchange chamber, and the interior of the circulation duct is hollow to form the fume extraction channel.

[0014] Furthermore, the guide plate is provided with a first flow cavity and a second flow cavity that are independent of each other. The first flow cavity and the second flow cavity are both connected between the phase change evaporator and the phase change condenser to realize the circulation of refrigerant between the phase change evaporator and the phase change condenser.

[0015] Furthermore, in the thickness direction of the guide plate, the first flow cavity and the second flow cavity are arranged side by side.

[0016] Furthermore, the ratio of the thickness of the first flow cavity to the thickness of the second flow cavity is in the range of 4:3 to 2:1.

[0017] Furthermore, in the thickness direction of the guide plate, fins are provided on at least the front side plate surface of the guide plate.

[0018] Compared with the prior art, the main advantages of the present invention are as follows:

[0019] Air deflectors guide the flow of fresh air, directing it towards the air outlets. This ensures the fresh air enters the room in a specific direction, preventing it from becoming scattered and disordered. By adjusting the airflow direction, more efficient air circulation and distribution can be achieved, improving airflow smoothness and uniformity, thereby increasing heat recovery efficiency and heat exchange. This also prevents a large temperature difference between the incoming air and the room temperature, improving the user experience. Furthermore, the shape and placement of the air deflectors allow for control of airflow speed, adjusting the fresh air velocity to prevent it from being too fast or too slow. Air deflectors also optimize airflow and reduce noise generation.

[0020] The fume extraction duct is located in the first zone. Kitchen fumes enter the outer casing through the fume inlet, then into the fume extraction duct, and finally exit through the fume outlet into the kitchen fume extraction duct hole. The high temperature of the fumes transfers heat to the air in the first zone, raising its temperature. This increased temperature difference between the heated air and the refrigerant in the evaporator leads to a faster phase change of the refrigerant, improving its heat exchange efficiency. This, in turn, accelerates refrigerant circulation, further improving the heat exchange efficiency of the condenser and ultimately the fresh air, resulting in better warming of the fresh air. Furthermore, the residual heat from the fumes is utilized and recovered, saving energy.

[0021] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an integrated range hood system according to an embodiment of the present invention from one perspective;

[0024] Figure 2 for Figure 1 A structural schematic diagram of the integrated range hood system from another perspective;

[0025] Figure 3 This is a schematic diagram of the structure of an integrated range hood system according to another embodiment of the present invention;

[0026] Figure 4This is a partial structural diagram of the integrated range hood system according to an embodiment of the present invention;

[0027] Figure 5 This is another partial structural diagram of the integrated range hood system according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the baffle plate in the integrated range hood system of this invention.

[0029] icon:

[0030] 1-Shell; 11-Smoke exhaust chamber; 12-First zone; 13-Second zone; 14-Fresh air inlet;

[0031] 2-Phase change evaporator;

[0032] 3-Phase change condenser;

[0033] 4-Guide plate; 41-Windward end; 42-First flow cavity; 43-Second flow cavity; 44-Fin; 45-Front side plate; 46-Rear side plate; 47-Injection port;

[0034] 5-Air supply fan;

[0035] 6- Circulation channels. Detailed Implementation

[0036] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0038] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] It should be noted that, in the embodiments of the present invention, "front" refers to the direction closer to the interior, and "rear" is the opposite direction to "front".

[0043] like Figures 1 to 6 As shown, the present invention provides an integrated range hood system, comprising: a housing 1 having a fume extraction channel, a fume inlet and a fume outlet on the housing 1, both of which are in fluid communication with the fume extraction channel; a heat exchange chamber inside the housing 1, with a fresh air inlet 14 for communication with the outside and an air outlet for communication with the inside, both of which are in fluid communication with the heat exchange chamber; the heat exchange chamber includes a first region 12 and a second region 13 that are independent of each other, a phase change evaporator 2 is disposed in the first region 12, and a phase change condenser 3 is disposed in the second region 13; the fume extraction channel is located in the first region 12 and is not in communication with the heat exchange chamber, and the phase change condenser 3 is higher than the phase change evaporator 2 in the height direction of the housing 1; and a guide plate 4 disposed in the second region 13, the guide plate 4 being arranged on the airflow path between the fresh air inlet 14 and the air outlet, and the guide plate 4 being located downstream of the phase change condenser 3 along the fluid flow direction.

[0044] In this embodiment, outdoor fresh air enters the second region 13 of the heat exchange chamber through the fresh air inlet 14. The fresh air exchanges heat with the refrigerant in the phase change condenser 3, releasing heat and changing from a gaseous state to a liquid state, flowing towards the phase change evaporator 2. The fresh air is heated and flows downstream. The guide plate 4 can guide the flow of fresh air, directing it to the air outlet in a concentrated manner, ensuring that the fresh air enters the room through the air outlet in a specific flow direction. This avoids the fresh air from being scattered and disorderly. By adjusting the airflow direction, more efficient air circulation and distribution can be achieved, improving airflow smoothness and uniformity, thereby improving heat recovery efficiency and heat exchange effect. This also prevents a large temperature difference between the air entering the room and the indoor temperature, improving the user experience. In addition, the shape and position of the guide plate 4 can control the airflow speed and adjust the fresh air velocity, preventing the wind speed from being too fast or too slow. The guide plate 4 can also optimize airflow and reduce noise generation.

[0045] Liquid refrigerant enters the phase change evaporator 2 in the first region 12. The refrigerant in the phase change evaporator 2 exchanges heat with the air in the first region 12. After absorbing heat in the evaporator, the liquid refrigerant is converted into a gaseous state. The gaseous refrigerant then flows to the phase change condenser 3, and so on.

[0046] The fume extraction duct is located within the first zone 12. Kitchen fumes enter the outer casing through the fume inlet, then the fume extraction duct, and finally exit through the fume outlet into the kitchen fume extraction duct hole. The high temperature of the fumes transfers heat to the air in the first zone 12, raising its temperature. This increased temperature difference between the heated air and the refrigerant in the phase change evaporator 2 allows for a faster phase change of the refrigerant, improving its heat exchange efficiency. This, in turn, accelerates refrigerant circulation, further improving the heat exchange efficiency of the phase change condenser 3, and ultimately enhancing the heat exchange efficiency of the fresh air, resulting in better warming of the fresh air. Furthermore, the residual heat from the fumes is utilized and recovered, saving energy.

[0047] It should be noted that traditional air conditioning systems circulate refrigerant through compressors and throttling devices. However, the integrated range hood system provided in this application circulates refrigerant through the pressure difference generated by the phase change of the refrigerant. Since the pressure difference generated by the refrigerant's phase transition is relatively small, there is a height difference between the phase change evaporator 2 and the phase change condenser 3, which promotes refrigerant flow and facilitates heat transfer between the phase change condenser 3 and the phase change evaporator 2.

[0048] Specifically, the upper part of the shell 1 has a heat exchange chamber, the lower part of the shell 1 has a smoke exhaust chamber 11, an oil fume inlet is opened on the lower front side of the shell 1, and an oil fume outlet can be opened on the top of the shell 1.

[0049] A first partition can be provided inside the housing 1 to divide the inner cavity of the housing 1 into a lower exhaust chamber 11 and an upper heat exchange chamber. A second partition can be provided inside the heat exchange chamber to divide the heat exchange chamber into a first region 12 and a second region 13 that are independent of each other. Alternatively, the housing 1 includes an upper shell and a lower shell that are connected to each other. The inner cavity of the upper shell forms the heat exchange chamber, and the inner cavity of the lower shell forms the exhaust chamber 11. A partition can be provided inside the inner cavity of the upper shell to divide the inner cavity into a first region 12 and a second region 13.

[0050] Within the first area 12, a partition can be installed to create a passageway for fume extraction. As an optional solution, such as... Figure 1 As shown, the integrated range hood system also includes: a circulation duct 6, which is installed inside the heat exchange chamber. The circulation duct 6 is hollow inside to form a fume extraction channel, and the circulation duct 6 is designed for easy assembly. One end of the circulation duct 6 is connected to the fume inlet, and the other end is connected to the fume outlet.

[0051] like Figure 2 and Figure 3 As shown, based on the above embodiments, the air outlet is further provided on the front side of the housing 1 (optionally, the air outlet is provided on the upper part of the housing 1), and the fresh air inlet 14 is provided on the top of the housing 1 to facilitate the connection of external pipes to the outside. The fresh air inlet is located on the top of the housing 1, so that the external pipes can be located on the top of the housing 1, avoiding the occupation of the thickness or width space of the integrated range hood system. A blower 5 is also provided in the heat exchange chamber, and the air outlet of the blower 5 is connected to the air outlet. The guide plate 4 extends back and forth, and the rear end of the guide plate 4 is the windward end 41, and the front end of the guide plate 4 is opposite to the air inlet of the blower 5.

[0052] In this embodiment, a supply air fan 5 is installed inside the heat exchange chamber. The supply air fan 5 can draw fresh outdoor air into the second area 13 and deliver the heat-exchanged fresh air into the room, providing power for the circulation of fresh air. The front end of the guide plate 4 is opposite to the air inlet end of the supply air fan 5, so the guide plate 4 can directly guide the fresh air to the supply air fan 5, allowing the supply air fan 5 to deliver fresh air into the room more quickly and improve the efficiency of indoor air quality regulation.

[0053] The phase change condenser 3 can be set in multiple locations within the first region 12, as long as the phase change condenser 3 is set higher than the phase change evaporator 2.

[0054] As an alternative, such as Figure 2 and Figure 3 As shown, the phase change condenser 3 is arranged near the fresh air inlet 14, and the baffle 4 is at least partially located below the phase change condenser 3.

[0055] In this embodiment, the phase change condenser 3 is arranged adjacent to the fresh air inlet 14. Therefore, after the fresh air enters the second region 13 through the fresh air inlet 14, it will pass through the phase change condenser 3 more quickly, resulting in faster heat exchange. This also facilitates more fresh air passing through the phase change condenser 3 and more fresh air being heated. At least a portion of the guide plate 4 is located below the phase change condenser 3, allowing the heat-exchanged fresh air to reach the guide plate 4 more quickly and be guided by it.

[0056] Alternatively, a portion of the guide plate 4 can be positioned below the phase change condenser 3, or the entire guide plate 4 can be positioned below the phase change condenser 3.

[0057] A portion of the windward side of the phase change condenser 3 can be positioned directly opposite the fresh air inlet 14.

[0058] As an alternative, such as Figure 2 and Figure 3 As shown, the windward side of the phase change condenser 3 is positioned directly opposite the fresh air inlet 14, and the projection of the phase change condenser 3 onto the plane where the fresh air inlet 14 is located can cover the fresh air inlet 14.

[0059] In this embodiment, the windward side of the phase change condenser 3 is directly opposite the fresh air inlet 14. It can be understood that the phase change condenser 3 is located directly below the fresh air inlet 14 and can be set close to the wall of the shell 1. With this setting, the fresh air can pass through the phase change condenser 3 immediately and completely after passing through the fresh air inlet 14, so that all the fresh air can be heated by heat exchange, thereby improving the heat exchange efficiency.

[0060] Based on any of the above embodiments, the guide plate 4 can be a straight plate, which is inclined relative to the vertical direction. The rear end of the straight plate is located below the phase change condenser 3, and the front end of the straight plate extends towards the blower 5. It should be noted that a straight plate means that the outline of the side of the guide plate 4 is a straight line, and the plate surface of the guide plate 4 (the two surfaces located between the two side surfaces) can be wavy, sawtooth, etc.

[0061] As an alternative, such as Figures 1 to 6 As shown, the guide plate 4 has an arc-shaped structure with both ends bent towards the same side, and the guide plate 4 is tilted forward from top to bottom (for example, when at least part of the guide plate 4 is located in the phase change condenser 3, the guide plate 4 is convex in an arc shape away from the phase change condenser 3). The guide plate 4 is arc-shaped (the side profile of the guide plate 4 and the plate surface of the guide plate 4 are both arc-shaped), which can make the fresh air flow smoother and can better adjust the flow speed of the fresh air, further improve the smoothness and uniformity of the airflow, and thus further improve the heat recovery efficiency.

[0062] like Figure 2As shown, based on any of the above embodiments, as an optional solution, in the thickness direction of the housing 1, the rear end (i.e., the windward end 41) of the guide plate 4 is opposite to the rear side of the phase change condenser 3. In this embodiment, after the fresh air reaches the guide plate 4, it is guided through the front side plate surface 45 (which can also be understood as the upper side plate surface) of the guide plate 4.

[0063] like Figure 3 As shown, based on any of the above embodiments, as an optional solution, in the thickness direction of the shell 1, the rear end of the guide plate 4 is opposite to the middle part of the phase change condenser 3, so as to form a flow channel on the front and rear sides of the guide plate 4 respectively; the guide plate 4 is flat.

[0064] In this embodiment, the rear end of the guide plate 4 is positioned opposite to the middle of the phase change condenser 3. The guide plate 4 can divide the gas passing through the phase change condenser 3 into two paths, one path located in front of the guide plate 4 and the other path located in rear of the guide plate 4. The guide plate 4 is flat, that is, the thickness of the guide plate 4 is less than the length and width of the guide plate 4. This arrangement can reduce the velocity difference between the two airflow paths, making the velocities of the two airflow paths as consistent as possible, thereby ensuring the uniformity of fresh air heat exchange.

[0065] As an alternative, the deflector 4 is designed in an arc shape and a flat shape, which can not only play a good role in guiding the flow, but also reduce the space occupied.

[0066] like Figures 1 to 6 As shown, based on any of the above embodiments, the guide plate 4 is further provided with a first flow cavity 42 and a second flow cavity 43 that are independent of each other. The first flow cavity 42 and the second flow cavity 43 are both connected between the phase change evaporator 2 and the phase change condenser 3, so as to realize the circulation of refrigerant between the phase change evaporator 2 and the phase change condenser 3.

[0067] Specifically, the first flow chamber 42 connects the outlet of the phase change condenser 3 and the inlet of the phase change evaporator 2, and the second flow chamber 43 connects the inlet of the phase change condenser 3 and the outlet of the phase change evaporator 2. Liquid refrigerant enters the first flow chamber 42 from the outlet of the phase change condenser 3, and then enters the phase change evaporator 2 through the inlet of the phase change evaporator 2. After absorbing heat and converting to gas within the phase change evaporator 2, the gaseous refrigerant enters the second flow chamber 43 through the outlet of the phase change evaporator 2, and then enters the phase change condenser 3 through the inlet of the phase change condenser 3, thus achieving refrigerant circulation. In this embodiment, the guide plate 4 not only guides the gas flow but also facilitates the circulation of refrigerant, replacing part of the refrigerant circulation piping and reducing the piping within the heat exchange chamber. This results in a simple and compact refrigeration cycle structure between the phase change evaporator 2 and the phase change condenser 3.

[0068] It is understandable that since the guide plate 4 is located in the second region 13 and the phase change evaporator 2 is located in the first region 12, the pipeline between the guide plate 4 and the phase change evaporator 2 needs to pass through the wall between the first region 12 and the second region 13.

[0069] The guide plate 4 can be hollow, and a partition is set in the inner cavity of the guide plate 4 to divide the inner cavity of the guide plate 4 into a first flow cavity 42 and a second flow cavity 43.

[0070] The first flow cavity 42 and the second flow cavity 43 can be arranged side by side in the width direction of the guide plate 4 (the width direction of the guide plate 4 is consistent with the width direction of the housing 1).

[0071] As an alternative, such as Figure 3 and Figure 4 As shown, in the thickness direction of the guide plate 4, the first flow cavity 42 and the second flow cavity 43 are arranged side by side, or the first flow cavity 42 and the second flow cavity 43 are arranged vertically. With this arrangement, the area of ​​the plate surface of the guide plate 4 corresponding to the first flow cavity 42 and the area of ​​the plate surface corresponding to the second flow cavity 43 can both reach the maximum, thereby maximizing the effective heat exchange area between the airflow and the refrigerant in the first heat exchange cavity and / or maximizing the effective heat exchange area between the airflow and the refrigerant in the second heat exchange cavity.

[0072] For example, the first flow cavity 42 is located above the second flow cavity 43. When the rear end of the guide plate 4 is opposite to the rear side of the phase change condenser 3 in the thickness direction of the shell 1, the airflow passes through the front plate surface 45 of the guide plate 4 (when the guide plate 4 is tilted, the front plate surface 45 of the guide plate 4 is also its upper plate surface). The gas can exchange heat with the liquid refrigerant in the first flow cavity 42 on the upper plate surface of the guide plate 4, further reducing the temperature of the liquid refrigerant, thereby increasing the temperature difference between the liquid refrigerant and the fresh air, improving the heat exchange effect, and further increasing the temperature of the fresh air. When airflow channels are formed on both the front and rear sides of the guide plate 4 in the thickness direction of the shell 1, the fresh air flow on the upper side exchanges heat with the liquid refrigerant in the first flow cavity 42, and the fresh air flow on the lower side exchanges heat with the gaseous refrigerant in the second flow cavity 43. Both fresh air flows can be temperature-enhanced.

[0073] The cross-sectional area of ​​the first flow cavity 42 can be the same as that of the second flow cavity 43. The cross-sectional areas of the first flow cavity 42 and the second flow cavity 43 can be the same or different. For example, the ratio of the thickness of the first flow cavity 42 to the thickness of the second flow cavity 43 can be 2:1 to 4:3 (e.g., 4:3, 3:2, 9:5 or 2:1).

[0074] Based on the above embodiments, the guide plate 4 is further provided with a first inlet and a first outlet; a first partition plate is provided in the first flow cavity 42, which divides the first flow cavity 42 into a plurality of first diversion cavities arranged sequentially in the width direction and / or the thickness direction of the guide plate 4 (that is, the guide plate 4 is provided with a plurality of first diversion cavities in the thickness direction, or the guide plate 4 is provided with a plurality of first diversion cavities in the width direction, or the guide plate 4 is provided with a plurality of first diversion cavities in both the thickness direction and the width direction); the plurality of first diversion cavities are all connected to the first inlet and the first outlet.

[0075] The guide plate 4 is provided with a second inlet and a second outlet; the second flow cavity 43 is provided with a second partition plate, which divides the second flow cavity 43 into a plurality of second diversion cavities arranged sequentially in the width direction or the thickness direction of the guide plate 4 (that is, the guide plate 4 is provided with a plurality of second diversion cavities in the thickness direction, or the guide plate 4 is provided with a plurality of second diversion cavities in the width direction, or the guide plate 4 is provided with a plurality of second diversion cavities in both the thickness direction and the width direction); the plurality of second diversion cavities are all connected to the second inlet and the second outlet.

[0076] like Figures 2 to 6 As shown, based on the above embodiment, further, in the thickness direction of the guide plate 4, fins 44 are provided at least on the front side plate 45 of the guide plate 4. The fins 44 can realize airflow turbulence, making the gas temperature more uniform and improving the heat exchange efficiency.

[0077] Alternatively, fins 44 can be provided only on the front side panel 45, or on both the front side panel 45 and the rear side panel 46.

[0078] The fin 44 can be a raised structure, such as dotted protrusions or striped protrusions, or a pitted structure, such as dotted pits or striped pits.

[0079] It should be noted that a charging port 47 is provided on the guide plate 4. The charging port 47 can be connected to the first flow chamber 42, the second flow chamber 43, or both the first and second flow chambers 42 and 43. Refrigerant can be charged through the charging port 47. Of course, if necessary, the refrigerant in the phase change condenser 3 and the phase change evaporator 2 can also be discharged.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. Numerous specific details are set forth in the specification provided herein. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the present invention and form different embodiments.

Claims

1. An integrated range hood system, comprising: The housing (1) has an oil fume extraction channel. An oil fume inlet and an oil fume outlet are provided on the housing (1). The oil fume inlet and the oil fume outlet are in fluid communication with the oil fume extraction channel. The housing (1) also has a heat exchange chamber (11) inside. The housing (1) is provided with a fresh air inlet (14) for communicating with the outside and an air outlet for communicating with the inside. The fresh air inlet (14) and the air outlet are both in fluid communication with the heat exchange chamber (11). The heat exchange chamber (11) includes a first region (12) and a second region (13) that are independent of each other. A phase change evaporator (2) is provided in the first region (12), and a phase change condenser (3) is provided in the second region (13). Its features are: The fume extraction channel is located in the first region (12) and is not connected to the heat exchange chamber (11). In the height direction of the shell (1), the phase change condenser (3) is higher than the phase change evaporator (2). It also includes: A baffle plate (4) is provided in the second region (13). The baffle plate (4) is arranged on the airflow path between the fresh air inlet (14) and the air outlet, and the baffle plate (4) is located downstream of the phase change condenser (3) along the flow direction of the fluid.

2. The integrated range hood system according to claim 1, characterized in that, The air outlet is located on the front side of the housing (1), and the fresh air inlet (14) is located on the top of the housing (1); The heat exchange chamber (11) is also equipped with a blower (5), and the air outlet of the blower (5) is connected to the air outlet. The guide plate (4) extends forward and backward, and the rear end of the guide plate (4) is the windward end (41), while the front end of the guide plate (4) is opposite to the air inlet end of the blower (5).

3. The integrated range hood system according to claim 2, characterized in that, The phase change condenser (3) is arranged adjacent to the fresh air inlet (14), and the baffle plate (4) is at least partially located below the phase change condenser (3).

4. The integrated range hood system according to claim 3, characterized in that, The windward side of the phase change condenser (3) is directly opposite the fresh air inlet (14), and the projection of the phase change condenser (3) onto the plane where the fresh air inlet (14) is located can cover the fresh air inlet (14).

5. The integrated range hood system according to claim 3, characterized in that, The guide plate (4) has an arc-shaped structure with both ends bent toward the same side, and the guide plate (4) is tilted forward from top to bottom.

6. The integrated range hood system according to any one of claims 1-5, characterized in that, In the thickness direction of the housing (1), the rear end of the guide plate (4) is opposite to the rear side of the phase change condenser (3).

7. The integrated range hood system according to any one of claims 1-5, characterized in that, In the thickness direction of the housing (1), the rear end of the guide plate (4) is opposite to the middle part of the phase change condenser (3) to form a flow channel on the front and rear sides of the guide plate (4); The guide plate (4) is flat.

8. The integrated range hood system according to claim 1, characterized in that, Also includes: A flow pipe (6) is provided inside the heat exchange chamber (11), and the interior of the flow pipe (6) is hollow to form the oil fume absorption channel.

9. The integrated range hood system according to claim 1, characterized in that, The guide plate (4) is provided with a first flow chamber (42) and a second flow chamber (43) that are independent of each other. The first flow chamber (42) and the second flow chamber (43) are both connected between the phase change evaporator (2) and the phase change condenser (3) to realize the circulation of refrigerant between the phase change evaporator (2) and the phase change condenser (3).

10. The integrated range hood system according to claim 9, characterized in that, In the thickness direction of the guide plate (4), the first flow cavity (42) and the second flow cavity (43) are arranged side by side.

11. The integrated range hood system according to claim 10, characterized in that, The ratio of the thickness of the first flow cavity (42) to the thickness of the second flow cavity (43) is in the range of 4:3-2:

1.

12. The integrated range hood system according to claim 9, characterized in that, In the thickness direction of the guide plate (4), fins (44) are provided on at least the front side plate (45) of the guide plate (4).

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