Kitchen range hood capable of simultaneously producing hot water

Abstract

This invention relates to a kitchen range hood capable of simultaneously generating hot water, comprising a fume extraction component and a water heater component. The fume extraction component includes a housing, a fume removal panel, and a fan. A smoke inlet is located at the front of the housing, and the fume removal panel is positioned at the smoke inlet. The fume removal panel includes a water jacket and heat exchange tubes disposed within the water jacket. An exhaust overflow port and a water inlet are located at the top of the water jacket, and a drain pipe is located at the bottom of the housing. The water heater component includes an air source heat pump water heater body, which is connected to the inlet and outlet of the heat exchange tubes in the fume removal panel via two pipes. The fume removal panel is the evaporator assembly of the air source heat pump water heater. This invention provides excellent fume extraction, simultaneously delivers domestic hot water, and has a long service life.

Description

Technical Field

[0001] The invention relates to a range hood, in particular to a kitchen range hood capable of generating hot water at the same time. Background Art

[0002] Range hoods are common kitchen appliances that are used to exhaust harmful fumes generated when preparing food out of the kitchen to protect the health of operators.

[0003] Existing range hoods mainly have the following types and characteristics:

[0004] The first is direct discharge, which exhausts the smell of food, hot smoke and kitchen air from the wok to the outside. The required fan has a large air volume and pressure, high energy consumption, and high noise. Untreated smoke also pollutes the environment. Moreover, after running for a long time, grease will stick to the air duct and fan impeller, causing the impeller to get stuck and the system to discharge unsmoothly.

[0005] Secondly, the pollution to the environment is reduced after the oil smoke is roughly separated and then discharged, but the actual effect of removing harmful substances is not ideal, and there is no improvement in energy consumption, noise and other aspects.

[0006] Third, a filter device is installed at the front end of the smoke chamber, which has a better effect in separating grease and dirt and can significantly reduce pollution to the environment. However, the filter device cannot remove the odor emitted by the dishes, and the filter device at the front end of the smoke chamber is generally effective when it collides with the airflow. The noise in the kitchen is also significantly increased, sacrificing the indoor environment.

[0007] In addition, only a small amount of the heat energy generated by the stove is actually used to heat food. Most of it is lost in the kitchen or discharged to the outside. The kitchen is generally hot and the operators feel uncomfortable.

[0008] In summary, existing common range hoods will pollute the outdoor environment if the filtering effect is poor, and pollute the indoor environment if the filtering effect is good. They have high energy consumption and cannot eliminate the problem of food odor and heat loss.

[0009] In order to improve the utilization efficiency of heat energy, the Chinese invention patent application with application number and publication number CN102230644A discloses "a multifunctional air energy range hood, comprising a range hood and a fan, the fan is arranged inside the range hood, an air energy heat exchanger is arranged inside the range hood, and the air energy heat exchanger is installed at the vent of the range hood". The technical solution of this application includes an air energy heat exchanger arranged at the internal vent of the range hood, which can exchange heat with hot oil smoke. The Chinese invention patent application with application publication number CN104807055A discloses "a heat recovery range hood system with stove waste heat recovery function, comprising: a heat recovery range hood, an inlet valve, an outlet valve, and an insulated water tank. The heat recovery range hood is based on an ordinary range hood, and a heat exchanger assembly is added inside; one end of the inlet valve is connected to the water inlet pipe of the tap water, and the other end of the inlet valve is connected to one end of the heat exchanger assembly in the heat recovery range hood; one end of the outlet valve is connected to one end of the insulated water tank, and the other end of the outlet valve is connected to the other end of the heat exchanger assembly in the heat recovery range hood", so that hot oil smoke and tap water flowing through the heat exchanger assembly can exchange heat to produce usable hot water, so as to achieve the purpose of energy saving.

[0010] The Chinese invention patent application with application publication number CN104807055A also claims that it is possible to "use an air intake fan to draw fresh air from nature into the kitchen to improve the air quality in the kitchen", with the intention of making full use of the "wind power of the fan".

[0011] The aforementioned technical solution does not describe the structure of the heat exchanger disposed inside the range hood. However, the heat exchange assembly in the prior art, if used in a range hood, will have the problem of difficulty in cleaning the grease. As for the problem of inhaling fresh air from nature through the fan disposed in the range hood, the air outlet of the range hood is generally provided with a check valve, and the external air cannot flow into the room from the air outlet. Moreover, the air outlets of a considerable number of range hoods are currently connected to the public flue, and there is no required fresh air.

[0012] In addition, the characteristics of kitchen fumes are limited temperature difference and enthalpy value, and the effect of recovering waste heat by conduction at room temperature is limited.

[0013] Due to the existence of these problems, the technical solutions in the background technology have no promotion value. Even though the technical solutions have been disclosed for more than ten years, the relevant products have never been launched on the market. Summary of the invention

[0014] The purpose of the present invention is to improve and innovate the shortcomings and problems existing in the background technology, and to provide a kitchen range hood that can simultaneously generate hot water and remove oil smoke and odor.

[0015] The technical solution of the present invention is to construct a kitchen range hood capable of simultaneously generating hot water, comprising a range hood component and a water heater component, wherein the range hood component comprises a housing, a fume removal panel and a fan, wherein the front portion of the housing is provided with a smoke inlet inclined inward from top to bottom, the top of the housing is provided with a smoke outlet, the fume removal panel is provided on the smoke inlet, the fan is provided in the housing, and the exhaust port of the fan is connected to the smoke outlet;

[0016] The oil fume removal panel comprises a water jacket and a heat exchange tube arranged in the water jacket, the refrigerant inlet and the refrigerant outlet of the heat exchange tube extend out of the water jacket, the top of the water jacket is provided with an exhaust overflow port and a water inlet, and the bottom of the shell is provided with an oil water drain pipe;

[0017] An outer guide plate is provided at the upper end of the smoking port of the housing;

[0018] An inner guide plate is also provided in the shell and is located between the oil fume removal panel and the fan, and the upper and side edges of the inner guide plate are sealed and connected to the shell;

[0019] The water heater components include an air energy water heater body, which is connected to the inlet and outlet of the heat exchange tube in the oil fume removal panel through two pipes. The oil fume removal panel is the evaporator assembly of the air energy water heater.

[0020] In one of the embodiments, the outer guide plate is formed by bending the shell downward, the front of the outer guide plate is an operation panel, and there is a gap between the bottom and the top of the oil fume removal panel, and the gap is the oil fume inlet.

[0021] In one embodiment, a Y-shaped support plate is provided at the lower part of the smoke outlet, the bottom of the fume removal panel is a strip plate, the bottom of the strip plate is inserted into the upper part of the Y-shaped support plate, and an oil guide hole is provided on one side of the Y-shaped support plate corresponding to the interior of the range hood.

[0022] In one embodiment, the water jacket comprises an outer condensation oil catcher plate and an inner condensation oil catcher plate, the outer condensation oil catcher plate and the inner condensation oil catcher plate are spaced apart in the middle part and overlapped and connected all around, and the middle part is the water jacket.

[0023] In one of the embodiments, a sealing rubber pad is provided at the overlapping connection between the outer water condensation and oil catching plate and the inner water condensation and oil catching plate.

[0024] In one embodiment, the heat exchange tube is a plain tube or a finned tube, and the material is copper.

[0025] In one of the embodiments, the front of the outer water condensation and oil catching plate is provided with corrugations or fold lines.

[0026] In one embodiment, the control switches of the hot water component and the range fumes extraction component are both arranged on the operation panel.

[0027] Advantages and beneficial effects of the present invention: The present invention combines the range hood with the air energy water heater. The oil fume removal panel (including water jacket, heat exchange tube, etc.) of the range hood constitutes the evaporator assembly of the air energy water heater. The low temperature heat absorption characteristic is used to absorb the high temperature of the range hood, so that the oil fume removal panel is greatly cooled, and the water droplets, oil droplets in the oil fume and the odor and other substances generated by the volatilization and decomposition of food are condensed and precipitated. Since the heat exchange tube does not come into direct contact with the oil fume, it does not need to be cleaned and maintained, and the present invention has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1.

[0029] Figure 2 It is a cross-sectional view of Example 1, and the arrows in the figure indicate the flow direction of the oil smoke.

[0030] Figure 3 Schematic diagram of the structure of the housing in the embodiment.

[0031] Figure 4 It is a cross-sectional view of the water jacket in Example 1. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0033] It should be noted that when an element is considered to be “disposed on” another element, it may be directly disposed on or connected to the other element or there may be an intermediate element at the same time.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification are only for describing specific implementation purposes and are not intended to limit the present invention.

[0035] Example 1

[0036] like Figure 1-3 As shown, a kitchen range hood capable of simultaneously generating hot water comprises a range hood component 1 and a water heater component 2, wherein the range hood component 1 comprises a housing 11, a fume removal panel 12 and a fan 13, wherein a smoke inlet 14 inclined inward from top to bottom is arranged at the front of the housing 11, a smoke outlet 15 is arranged at the top of the housing 11, the fume removal panel 12 is arranged at the smoke inlet 14, the fan 13 is arranged in the housing 11, and the exhaust port of the fan 13 is connected to the smoke outlet 15;

[0037] The oil fume removal panel 12 includes a water jacket 121 and a heat exchange tube 122 disposed in the water jacket 121. The refrigerant inlet 124 and the refrigerant outlet 125 of the heat exchange tube 122 extend out of the water jacket 121. The top of the water jacket 121 is provided with an exhaust overflow port 124 and a water inlet 125. The bottom of the shell 11 is provided with an oil water drain pipe 111.

[0038] The smoke inlet 14 of the housing 11 is provided with an outer guide plate 113. Specifically, the outer guide plate 113 is formed by bending the housing 11 downward, and the front of the outer guide plate 113 is an operation panel. There is a gap between the bottom and the top of the oil fume removal panel 12, and the gap is an oil fume inlet 126. The oil fume enters the interior of the range hood from the oil fume inlet 126. Figure 2 Indicated by the arrow.

[0039] The housing 11 is also provided with an inner guide plate 16, and is located between the oil fume removal panel 12 and the fan 13, and the upper and side edges of the inner guide plate 16 are sealed and connected to the housing 11;

[0040] The water heater component 2 includes an air-energy water heater body 21, and the air-energy water heater body 21 is connected to the refrigerant inlet 124 and the refrigerant outlet 125 of the heat exchange tube 122 in the fume removal panel 12 through two pipes 3. The fume removal panel 12 and the air-energy water heater body 21 are connected through the pipe 3 to form a complete air-energy water heater, wherein the fume removal panel 12 is the evaporator assembly of the air-energy water heater.

[0041] The lower part of the second connecting member is a Y-shaped support plate 127, and the bottom of the first connecting member is a strip plate, the bottom of the strip plate is inserted into the upper part of the Y-shaped support plate 127, and an oil guide hole is set on one side of the Y-shaped support plate 127 corresponding to the inside of the range hood.

[0042] The specific structure of the water jacket 121 includes an outer condensation oil catching plate 121a and an inner condensation oil catching plate 121b. The outer condensation oil catching plate 121a and the inner condensation oil catching plate 121b are both grooved plates. The outer condensation oil catching plate 121a and the inner condensation oil catching plate 121b are overlapped, and the grooves of the two form a water jacket.

[0043] A sealing rubber pad 121c is provided at the overlapping connection between the outer condensation and oil-catching plate 121a and the inner condensation and oil-catching plate 121b.

[0044] The heat exchange tube 122 is a copper fin tube.

[0045] In order to increase the contact area with the oil smoke, the front of the outer water condensation and oil catching plate 121a is provided with corrugations or fold lines.

[0046] The control switches of the hot water component and the range fumes extraction component are both arranged on the operation panel for easy operation.

[0047] The use principle of the present invention is:

[0048] Before the first use of the present invention, water is filled into the water jacket through the water inlet on the water jacket. When in use, the fan and the air-energy water heater are turned on, and a low-temperature refrigerant flows through the heat exchange tube in the water jacket (i.e., the evaporator of the air-energy water heater), which greatly reduces the temperature of the water in the water jacket, and the high-temperature oil smoke fully contacts the water jacket from the front and back for heat exchange. Due to the large temperature difference between the oil smoke and the water jacket, the heat exchange effect is very obvious.

[0049] After testing the internal trial-produced prototype, it was found that in addition to the common oil droplets, the substances precipitated in the oil fume also include dust and particles decomposed by the heating of the food. The low-temperature water jacket also condenses and precipitates the oil fume and moisture in the air, while also eliminating the smell of the food, keeping the kitchen air clean. The experiment found that most of the harmful substances in the oil fume can be removed after only the above treatment, and almost no oil stains are generated in the range hood housing and on the fan, which greatly reduces the stagnation, adhesion and blockage caused by oil stains, extends the maintenance cycle of the range hood, and saves the cost of use. In addition, since the evaporator of the conventional air-energy water heater is changed from heat exchange with air to heat exchange with high-temperature water, more heat is absorbed, the ambient temperature in the kitchen can also be reduced, and the water heater can provide more heat. In the present invention, the heat exchange tube does not directly contact the oil fume, and the problem of adhesion of oil stains will not occur.

[0050] Since the present invention will condense a large amount of moisture in the air and oil smoke when used, oil droplets, dust, particles, etc. are mixed with water and have strong fluidity, so these substances rarely adhere to the surface of the oil smoke removal panel, but are quickly discharged through the oil water drainage pipe, which also greatly reduces the workload of daily cleaning.

[0051] In the present invention, the water jacket together with the heat exchange tubes therein can be used as an independent component, and the evaporator assembly of the air-energy water heater in the prior art can be replaced as a whole. It is easy to implement for those skilled in the art and has strong practicality. The embodiment provides a simple connection structure, which makes the installation of the oil fume removal panel and the shell simple. Of course, since the maintenance cycle of the present invention is long and the number of maintenance times within the service life is small, even if the conventional connection method and structure in the prior art are used to connect the water jacket and the shell, the maintenance difficulty is much less than that of the prior art.

[0052] Since air-energy water heaters are common equipment, their basic structure belongs to the prior art. Other components except the evaporator assembly (i.e., the water heater component 2 in the present invention) and their connection methods with the evaporator assembly are all prior art, so they will not be described in detail in this article.

[0053] When the embodiment is used, the water jacket is filled with water, which can obviously be other heat transfer media. The outer condensation oil catcher plate and the inner condensation oil catcher plate of the water jacket should be made of materials with good heat transfer performance, such as pure aluminum plate stamping, etc. Similarly, the heat exchange tube is preferably a copper plain tube or a finned tube.

[0054] The water jacket in the embodiment is composed of two plates with grooves, and the opposite grooves form a water jacket. This is a better technical solution. In fact, it can also be arranged with a flat plate at intervals. As long as the surroundings can be sealed, a water jacket can be formed between the two flat plates. Or one is a flat plate and the other is a plate with grooves.

[0055] The existing improved technical solution adopts the mode of direct conduction heat exchange at room temperature. Due to the limitations of the actual temperature and enthalpy value of kitchen smoke, its heat energy recovery and utilization value is not high. However, the present invention adopts mature heat pump technology (applied to air energy water heaters), so that air energy water heaters can reach or exceed the thermal efficiency of summer all year round. After promotion, it will achieve very good economic benefits and social benefits of energy conservation and emission reduction.

[0056] The invention has good oil fume cleaning effect, long service life, can significantly improve the kitchen environment, and can allow most of the heat to be used for heating hot water for daily use, thereby reducing energy waste.

[0057] The embodiments described in the present invention are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have all been recorded in the claims.

Claims

1. A kitchen range hood capable of simultaneously producing hot water, characterized in that: It comprises a fume extraction component and a water heater component, wherein the fume extraction component comprises a housing, a fume removal panel and a fan, wherein the front portion of the housing is provided with a smoke inlet inclined from top to bottom, the top of the housing is provided with a smoke exhaust port, the fume removal panel is provided at the smoke inlet, the fan is provided in the housing, and the exhaust port of the fan is connected to the smoke exhaust port; The oil fume removal panel comprises a water jacket and a heat exchange tube arranged in the water jacket, the refrigerant inlet and the refrigerant outlet of the heat exchange tube extend out of the water jacket, the top of the water jacket is provided with an exhaust overflow port and a water inlet, and the bottom of the shell is provided with an oil water drain pipe; An outer guide plate is provided at the upper end of the smoking port of the housing; An inner guide plate is also provided in the shell and is located between the oil fume removal panel and the fan, and the upper and side edges of the inner guide plate are sealed and connected to the shell; The water heater component includes an air energy water heater body, and the air energy water heater body is connected to the refrigerant inlet and the refrigerant outlet of the heat exchange tube in the oil fume removal panel through two pipes, and the oil fume removal panel is the evaporator assembly of the air energy water heater; The outer guide plate is formed by bending the shell downward, and the front of the outer guide plate is the operation panel. There is a gap between the bottom and the top of the oil fume removal panel, and the gap is the oil fume inlet; A Y-shaped support plate is provided at the lower part of the smoke outlet, the bottom of the oil fume removal panel is a strip plate, the bottom of the strip plate is inserted into the upper part of the Y-shaped support plate, and an oil guide hole is provided on one side of the Y-shaped support plate corresponding to the inside of the range hood; The water jacket comprises an outer condensation oil catcher plate and an inner condensation oil catcher plate, wherein the outer condensation oil catcher plate and the inner condensation oil catcher plate are spaced apart in the middle part and overlapped and connected around, and the middle part is the water jacket; A sealing rubber pad is provided at the overlapping connection between the outer condensation oil catching plate and the inner condensation oil catching plate; The front of the outer condensation and oil-catching plate is provided with corrugations or fold lines; The heat exchange tube is a plain tube or a finned tube; The heat exchange tube is a copper tube.

2. The kitchen range hood capable of simultaneously producing hot water according to claim 1, characterized in that: The control switches of the water heater component and the range fumes extraction component are both arranged on the operation panel.

Images