CN206247549U - A kitchen air-makeup system with waste-heat recovery device - Google Patents

Abstract

The utility model discloses a kitchen supplementary air system with a waste heat recovery device, which includes a supplementary air unit and a waste heat recovery unit. The supplementary air unit includes a fan controlled by a frequency converter, and the waste heat recovery unit includes copper pipes for heat exchange and The phase-change energy storage material has a working state of supplementing warm air and a working state of supplementing fresh air. First of all, it uses the frequency converter to control the frequency of the fan according to the output signal of the pressure controller, so as to realize the automatic control of the indoor pressure, which can reduce the phenomenon of odor accumulation, and will not cause the problem of insufficient fresh air; secondly, the system can choose supplementary heating according to needs In the wind working state or fresh air working state, using the waste heat of the range hood exhaust can reduce the overall energy consumption, save energy, and is conducive to environmental protection, especially suitable for the living environment in the north.

Description

A kitchen supplementary air system with waste heat recovery device

technical field

The utility model relates to the technical field of kitchen ventilation, in particular to a kitchen air supply system with a waste heat recovery device.

Background technique

As the world pays more and more attention to building energy conservation, the airtightness of houses is also increasing. Although a good airtightness of the envelope structure brings good energy-saving effects to the indoor environment, it also presents some problems. As we all know, the air circulation in the rooms of traditional residential buildings mainly depends on natural ventilation, especially in winter in the northern region, the outdoor weather is cold, and the air infiltrates mainly through doors and windows when cooking. It can only produce little or even zero air infiltration, which makes the kitchen space cannot be effectively supplemented with air when the doors and windows are closed and the range hood is turned on. In severe cases, indoor odors will occur. In addition, the national standard "Code for Design of Heating, Ventilation and Air Conditioning in Civil Buildings" (GB507736-2012) points out that the frequency of comprehensive ventilation in kitchens and bathrooms should not be less than 3 times/h. Therefore, the supplementary air system of the kitchen has great practicality in today's residential buildings.

In the current inventions and creations, there are also related equipment for supplementing air in the kitchen, but most of the equipment only filters the inhaled air and then directly passes it into the room, and there are few waste heat recovery systems and variable frequency fan systems.

Utility model content

The embodiment of the utility model provides a kitchen supplementary air system with a waste heat recovery device, which can adjust the supplementary air intensity in real time according to the needs, and can use waste heat to save energy while improving the combustion efficiency of kitchen gas and reducing indoor odor. The phenomenon.

A kitchen supplementary air system with a waste heat recovery device. The kitchen is equipped with a range hood smoke exhaust channel. The system includes a supplementary air unit and a waste heat recovery unit. The supplementary air unit includes an air duct with an air inlet and an air outlet , the first louver, the fire damper, the filter mechanism, the fan, the first air valve and the second louver are sequentially arranged in the air duct from the air inlet to the air outlet, and the air There is an attached air outlet on the side wall of the pipe, and the attached air outlet passes through the attached air pipe to the described air outlet. The attached air pipe is provided with a second air valve, and the described filter mechanism has four layers HEPA filter, the fan is connected to a frequency converter; the waste heat recovery unit includes a plurality of baffles arranged in the air duct and a number of copper pipes one less than the number of baffles, the The baffle plate is located between the first air valve and the air outlet, and a serpentine heat exchange channel for air flow is formed from the first air valve to the air outlet. One end of the copper pipe extends into the air duct respectively, and the ends are correspondingly located between two adjacent baffles, and the other end of the copper pipe extends into the smoke exhaust channel of the range hood. The outer wall of the copper tube is covered with a sleeve, the sleeve is located between the air duct and the smoke exhaust channel of the range hood, and the inner wall of the sleeve and the outer wall of the copper tube are filled with phase change Energy storage material, the system has a working state of supplementing warm air and a working state of supplementing fresh air. When the system is in the working state of supplementing warm air, the first air valve is in an open state, and the second air valve is in a closed state ; When the system is in the working state of supplying fresh air, the first air valve is in the closed state, and the second air valve is in the open state.

Preferably, the system further includes a pressure sensor, a temperature sensor and a humidity sensor, the signal output ends of the pressure sensor, the temperature sensor and the humidity sensor are connected to a display panel installed in the kitchen.

Preferably, the frequency converter is connected to a pressure controller, and the pressure sensor is connected to the pressure controller.

Preferably, the air duct has a first side wall and a second side wall, the first side wall is parallel to the second side wall, and the width of the baffle is smaller than that of the first side wall. The vertical distance between the side wall and the second side wall, the baffle is vertically installed on the first side wall or the second side wall, and any two adjacent One of the baffles is installed on the first side wall, and the other is installed on the second side wall.

Preferably, the first shutter is a double-layer structure.

Preferably, the first air valve has two valve plates.

Preferably, the second air valve has two valve plates.

A kitchen supplementary air system with a waste heat recovery device of the utility model, firstly, it uses a frequency converter to control the frequency of the fan according to the output signal of the pressure controller, so as to realize automatic control of the indoor pressure, which can reduce the phenomenon of odor accumulation, and will not There is a problem of insufficient fresh air volume; secondly, the system can choose the working state of supplementary heating air or supplementary fresh air according to the needs, and use the waste heat of the smoke exhausted by the range hood, which can reduce the overall energy consumption, save energy, and is conducive to environmental protection. Especially suitable for the living environment in the north.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a front view of a kitchen supplementary air system with a waste heat recovery device provided by an embodiment of the present invention;

Fig. 2 is the enlarged schematic diagram of place A in Fig. 1;

Fig. 3 is a top view of a kitchen supplementary air system with a waste heat recovery device provided by an embodiment of the utility model;

Fig. 4 is a side view of a kitchen supplementary air system with a waste heat recovery device provided by an embodiment of the utility model.

Explanation of reference signs:

1-air duct, 101-air inlet, 102-air outlet, 2-first louver, 3-fire damper, 4-filter mechanism, 5-fan, 6-first air valve, 7-second louver Window, 8-attached air duct, 9-second air valve, 10-baffle, 11-copper pipe, 12, bushing, 13-exhaust channel of range hood.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 to 4, a kitchen supplementary air system with a waste heat recovery device is provided. The air duct 1 of the tuyere 101 and the air outlet 102, the first louver 2, the fire damper 3, the filter mechanism 4, the fan 5, the first air valve 6 and The second shutter 7, the side wall of the air duct 1 is provided with an attached air outlet, and the attached air outlet passes through the attached air duct 8 to the air outlet 102, and the attached air duct 8 is provided with a second air valve 9, a filter mechanism 4 It is a four-layer HEPA filter, and the fan 5 is connected to a frequency converter; the waste heat recovery unit includes a plurality of baffles 10 arranged in the air duct 1 and copper pipes 11 whose number is one less than that of the baffles 10, and the baffles 10 are located at the first Between a damper 6 and the air outlet 102, from the first damper 6 to the air outlet 102, a serpentine heat exchange passage for air flow is formed, and one end of these copper pipes 11 respectively extends into the air pipe 1 and the ends Correspondingly located between two adjacent baffles 10, the other end of the copper tube 11 extends into the smoke exhaust channel 13 of the range hood. Between the smoke exhaust passages 13 of the machine, the phase change energy storage material is filled between the inner wall of the casing 12 and the outer wall of the copper pipe 11. , the first air valve 6 is in the open state, and the second air valve 9 is in the closed state; when the system is in the fresh air supply working state, the first air valve 6 is in the closed state, and the second air valve 9 is in the open state. It also includes a pressure sensor, a temperature sensor and a humidity sensor, the signal output ends of the pressure sensor, temperature sensor and humidity sensor are connected to the display panel, the display panel is installed in the kitchen, the frequency converter is connected to a pressure controller, and the pressure sensor is connected to the pressure sensor. The controller, the air duct 1 has a first side wall and a second side wall, the first side wall is parallel to the second side wall, the width of the baffle plate 10 is smaller than the vertical distance between the first side wall and the second side wall, The baffle 10 is vertically installed on the first side wall or the second side wall, and one of any two adjacent baffles 10 is installed on the first side wall, and the other is installed on the second side wall, The first louver 2 has a double-layer structure, the first air valve 6 has two valve plates, the second air valve 9 has two valve plates, the signal output end of the frequency converter is connected to the input end of the fan, and the frequency converter according to the pressure The signal from the controller adjusts the operating frequency of the fan.

First, the fan 5 introduces fresh air from the outside, passes through the first louver 2 and then enters the filter mechanism 4. The first layer of filter screen is treated with antibacterial substances, which can filter out larger particle pollutants, and the second layer is an anion filter. Net, which settles suspended particles such as dust and smoke in the fresh air. The three layers are HEPA high-efficiency ultra-clean filters, which filter out pollutants, dust and smoke above 0.3 microns. At the same time, antibacterial coatings are used to inhibit bacteria and viruses. The fourth The first layer is an activated carbon filter, which filters harmful gases in the air such as automobile exhaust, industrial pollution, nitrogen dioxide, and air odors. Afterwards, the system is divided into two steps:

1. In the season when the indoor temperature is lower than the optimum thermal comfort temperature, the channel where the first air valve 6 is located is opened, the channel where the second air valve 9 is located is closed, the waste heat recovery device is activated, and the filtered wind passes through the waste heat recovery unit to dissipate heat Enter the room through the second shutter 7 after the exchange. The phase change temperature of the phase change energy storage material in the waste heat recovery unit is about 23°C, and the heat is retained during the cooking process, so that it can also continue to replenish the energy during the process of opening the range hood in the kitchen to dissipate odor after cooking. The fresh air from the air system is heated.

2. In seasons when the indoor temperature is greater than or equal to the optimum comfort temperature, the channel where the first air valve 6 is located is closed, and the channel where the second air valve 9 is located is opened, and fresh air is sent into the room without going through the heating process. Be applicable.

The main effect of the second shutter 7 is the manual switch of indoor aspect, also can carry out manual control to the blowing wind direction of fresh air simultaneously.

The main function of the fire damper 3 is to cut off the supplementary air system when a fire breaks out in the kitchen, so as not to introduce new air into the kitchen through the supplementary air system, thereby increasing the intensity of the fire.

The installation positions of the pressure sensor, pressure controller, temperature sensor and humidity sensor can be arranged on site along with the construction. It is recommended to attach a temperature and humidity sensor and place it on the upper part of the ceiling together with the pressure sensor (especially near the new kitchen smoke detector) , and use the display panel to display the detection value.

In addition, the control system of this device is divided into two types: manual and automatic, that is, the wind speed of the fan 5 can also be manually controlled by the user in three levels.

Furthermore, ammonia water is used as a catalyst, and acetamide is used as a phase change material to configure a phase change energy storage material with a phase change temperature of 23.2°C, and the phase change energy storage material can be replaced as required.

The beneficial effects of the system of the present invention are, firstly, it uses the frequency converter to control the frequency of the fan according to the output signal of the pressure controller, realizes automatic control of the indoor pressure, can reduce the phenomenon of odor accumulation, and will not cause the problem of insufficient fresh air volume; secondly, The system can choose the working state of supplementing warm air or supplementing fresh air according to the needs, and utilizes the waste heat of the smoke exhausted by the range hood, which can reduce the overall energy consumption, save energy, and is conducive to environmental protection, especially suitable for the living environment in the north.

Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

Claims (7)

1. a kitchen air-makeup system with waste-heat recovery device, is provided with lampblack absorber discharge flue, the spy of the system in kitchen Levy and be, including mend wind unit and waste heat recovery unit, described wind unit of mending includes the airduct with air inlet and air outlet, Be disposed with from described air inlet to described air outlet in described airduct the first shutter, fire resisting damper, filter mechanism, Blower fan, the first air-valve and the second shutter, attached air outlet is offered on the side wall of described airduct, and described attached air outlet passes through Attached airduct insertion is provided with the second air-valve to described air outlet in described attached airduct, described filter mechanism is four layers HEPA filters, described blower fan is connected to a frequency converter；Described waste heat recovery unit includes being arranged in described airduct Multiple baffle plates and quantity than few one described of baffle number copper pipe, described baffle plate is located at described the first air-valve and institute Between the air outlet stated, the mobile snakelike heat exchanger channels of supply stream are formed from the first described air-valve to described air outlet, One end of copper pipe described in these is extended respectively in described airduct and end correspondence is positioned at the gear described in adjacent two Between plate, the other end of described copper pipe is extended in lampblack absorber discharge flue, and the outer wall of described copper pipe is arranged with sleeve pipe, institute The sleeve pipe stated is located between described airduct and lampblack absorber discharge flue, between described internal surface of sleeve pipe and described copper pipe outer Filled with phase-changing energy storage material, the system has mends warm wind working condition and mends fresh air working condition, when the system is warm in mending During wind working condition, the first described air-valve is in opening, and the second described air-valve is closed；At the system When fresh air working condition is mended, the first described air-valve is closed, and the second described air-valve is in opening.

2. the system as claimed in claim 1, it is characterised in that the system also includes pressure sensor, temperature sensor and wet Degree sensor, the signal output part of described pressure sensor, described temperature sensor and described humidity sensor is connected To display panel, the display panel is arranged in kitchen.

3. system as claimed in claim 2, it is characterised in that：Described frequency converter is connected to a pressure controller, described Pressure sensor is connected to described pressure controller.

4. the system as claimed in claim 1, it is characterised in that described airduct has the first side wall and second sidewall, described The first side wall it is parallel with described second sidewall, the width of described baffle plate is less than described the first side wall and described the Vertical range between two side walls, described baffle plate is vertically mounted in described the first side wall or described second sidewall, and One of baffle plate described in two of arbitrary neighborhood is on described the first side wall, another one is arranged on described second On the wall of side.

5. the system as claimed in claim 1, it is characterised in that the first described shutter is double-decker.

6. the system as claimed in claim 1, it is characterised in that the first described air-valve has two valve plates.

7. the system as claimed in claim 1, it is characterised in that the second described air-valve has two valve plates.