WO2022151510A1

WO2022151510A1 - Humidifier having heating-film heating mechanism

Info

Publication number: WO2022151510A1
Application number: PCT/CN2021/072732
Authority: WO
Inventors: 杜启明
Original assignee: 杜启明
Priority date: 2021-01-16
Filing date: 2021-01-19
Publication date: 2022-07-21
Also published as: CN112665066A; JP3235173U

Abstract

A humidifier having a heating-film heating mechanism. The humidifier comprises a machine body (1), a water tank (2) and a heating mechanism (3). The machine body (1) comprises a base (11) and a top shell (12), the top shell (12) being mounted on an upper end surface of the base (11) and the top shell (12) being vertically and fixedly connected to the base (11). The water tank (2) is mounted in the middle of the top shell (12), and the water tank (2) is fixedly connected to the top shell (12). The heating mechanism (3) comprises a heating box (31) and an air exhaust mechanism (32), wherein the heating box (31) is mounted at the lower end of the water tank (2), and the heating tank (31) is fixedly connected to the water tank (2) in a sealed manner; the air exhaust mechanism (32) is mounted on a side surface of the heating box (31), and the air exhaust mechanism (32) is fixedly connected to the heating box (31). Water droplets fall into the lower end of the water tank by means of different through holes in a water droplet separation plate (312), thereby achieving the aim of a water source being dispersed in all directions, and finally, the fallen water droplets drop onto a microcrystal plate heating film (313), and by means of the microcrystal plate heating film (313), the water droplets are heated and steam is generated. The temperature of the microcrystal plate heating film (313) is high, such that it can be ensured that steam can be generated instantly when the water droplets fall onto the microcrystal plate heating film (313).

Description

A humidifier with a heating film heating mechanism

technical field

The invention relates to the technical field of humidifiers, in particular to a humidifier with a heating film heating mechanism.

Background technique

A humidifier is a household appliance that increases the humidity of a room. A humidifier can humidify a designated room, or it can be connected to a boiler or central air-conditioning system to humidify the entire building. The humidifier can be divided into industrial humidifiers, There are three major categories of commercial humidifiers and household humidifiers. Ultrasonic technology is a relatively mature technology in the world and has been widely used in various fields. The ultrasonic humidifier uses 2 million ultrasonic high-frequency oscillations per second to atomize the water into ultrafine particles and negative oxygen ions of 1 micron to 5 microns. The accompanying rich negative oxygen ions can achieve uniform humidification, freshen the air, and improve health. The humidifier is mainly used to humidify the air, but the existing structure and spraying principle are similar, and the water quality requirements are relatively high. Impurity water is not suitable, and at the same time will cover certain germs into the air.

The inventor of the present application found that the existing humidifiers have a simple structure, and most of them use ultrasonic waves to decompose the water source. During the decomposition process, the water source is not only cooled quickly, but also needs to be equipped with corresponding heating equipment inside the humidifier. The mechanism is not convenient to use. At the same time, the traditional humidifier does not have the function of sterilizing the water source. When the humidifier is not used for a long time, the water source inside the water tank is easy to breed bacteria, which will require higher water quality and require regular cleaning of the interior. , otherwise it will cause pollution to the environment after long-term use.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a humidifier with a heating film heating mechanism, which aims to improve the simple structure of the existing humidifiers. Most of them use ultrasonic waves to decompose the water source, which will not only cause the water source to cool during the decomposition process. It is faster, and the inside of the humidifier also needs to be equipped with a corresponding heating mechanism, which is not convenient to use. At the same time, the traditional humidifier does not have the function of sterilizing the water source. When the humidifier is not used for a long time, the water source inside the water tank is easy to breed bacteria, so It will have higher water quality requirements, and the interior needs to be cleaned regularly, otherwise it will cause pollution to the use environment after long-term use.

The present invention is realized in this way:

A humidifier with a heating film heating mechanism includes a body, a water tank and a processing mechanism, the body includes a base and a top shell, the top shell is installed on the upper end face of the base, and the top shell is vertically and fixedly connected to the base, The water tank is installed in the middle of the top shell, and the water tank is fixedly connected with the top shell. The processing mechanism includes a heating box and an air exhaust mechanism. The exhaust mechanism is installed on the side of the heating box, and the exhaust mechanism is fixedly connected with the heating box. By studying the structure and use process of the traditional humidifier, a humidifier with a heating film heating mechanism is designed. The heating technology of film microcrystalline plate greatly improves the energy efficiency output. The heating film technology is a kind of heating technology with low power and high thermal efficiency. The heating film technology of the microcrystalline plate has a far-infrared high temperature for high temperature sterilization of water, which can be used for ordinary tap water. Do not choose water quality, output healthy and sterile water mist, for the entire water tank, the water valve controls the water flow rate, and through the water flow separation plate, and then drips onto the heating film microcrystalline plate to generate mist, and then the steam is discharged from the body through the fan to generate mist It also has the effect of simple control method and low cost, ensuring that the user can stably pass the base to ensure that the equipment can be stably placed on the ground or any horizontal position when needed, and then Ensure the stability of the equipment during use, and then the user can stably store water in the water tank for use, and the present invention is not a traditional ultrasonic decomposition water source, so there is no need to consider the problem of water quality, which greatly improves the use of the equipment. In the process of use, the user can drive the control valve to rotate synchronously by rotating the operating torque outside the device, thereby realizing the control of the amount of water supplied by the water tank to the interior of the heating box, so that the size of the humidifier weapon can be stably controlled. When the water source inside the water tank flows into the inside of the installation shell, it will be stably separated by the water droplet separation plate, and dripped to the lower end through the different through holes on the water droplet separation plate, thereby realizing the purpose of separating the water source around, and finally dripping The falling water droplets will fall on the heating film of the microcrystalline plate, and steam is generated by the heating of the heating film of the microcrystalline plate. Since the temperature of the heating film of the microcrystalline plate is high, it can ensure that the water droplets fall on the heating film of the microcrystalline plate. In the future, steam can be generated instantly, and the instantaneous high temperature can sterilize the water source at high temperature, so as to ensure the safety of the humidifier during use, and avoid polluting the use environment due to water quality problems. The user can stably turn on the rotating motor to drive the exhaust fan to blow, and then the water vapor can pass through the mist outlet to reach the mist outlet, and finally be stably discharged into the air through the mist outlet, so that the humidifier can pass the above process. The purpose of humidifying the room is achieved, and the user can not only humidify the air by controlling the discharge of water vapor, but also play the role of beautifying the skin, effectively solving the simple structure of the existing humidifiers, most of which use Ultrasonic to decompose the water source, in the process of decomposition, it will not only cause The water source cools quickly, and the inside of the humidifier needs to be equipped with a corresponding heating mechanism, which is not convenient to use. At the same time, the traditional humidifier does not have the function of sterilizing the water source. When the humidifier is not used for a long time, the water source inside the water tank is easy to breed bacteria. , this will require higher water quality, and the interior needs to be cleaned regularly, otherwise it will cause pollution to the use environment after long-term use. In the process of stability, at the same time, the water tank and the processing mechanism are installed to ensure that the water tank and the processing mechanism can be used stably through the setting of the top shell, so that the water tank and the processing mechanism can operate stably inside the top shell. Carry out water storage to ensure that the processing mechanism is provided with a water source, and through the structural setting of the processing mechanism, it is ensured that the user can stably vaporize the incoming water source through the heating box, and then stably discharge the water vapor through the exhaust mechanism. .

Further, the base includes a storage case and a bottom cover, the bottom cover is installed on the lower end face of the storage case, and the bottom cover and the storage case are detachably and fixedly connected, and the structure of the base is arranged to ensure that the user can pass through stably. The storage case ensures the stability of the device during use, and at the same time, the bottom cover is arranged so that the user can regularly open the lower end of the storage case for cleaning and use.

Further, the head of the top case is provided with an installation groove, and the side of the top case is evenly provided with a number of air inlet holes, and the upper end of the top case is also provided with a mist outlet, which is ensured by the setting of the installation groove. The user can stably install the water tank for use, and at the same time, the setting of the air inlet hole ensures that the exhaust mechanism can better blow air, and the setting of the mist outlet matches the purpose of discharging water vapor from the mist outlet.

Further, a drainage pipe is installed on the lower end surface of the water tank, the water tank is sealed and fixedly connected with the heating box through the drainage pipe, and the drainage pipe is fixedly connected with the water tank, and the arrangement of the drainage pipe ensures that the water tank can be stable. It is used in conjunction with the heating box to ensure that the water source inside the water tank can enter the heating box stably.

Further, a control valve is installed in the middle of the drain pipe, the control valve is rotatably connected with the drain pipe, and an operating torque is also installed on the head of the control valve, and the operating torque is fixedly connected with the control valve. The setting of the control valve ensures that the user can stably control the flow of the drain pipe, and at the same time, the setting of the operating torque ensures that the user can better rotate the control valve outside the device.

Further, the head of the heating box is provided with an installation shell, and a water droplet separation plate is installed in the middle of the installation shell, and the water droplet separation plate is fixedly connected with the installation shell. Ensure that the water source entering the installation shell can be dispersed and dripped through the water droplet separation plate.

Further, a microcrystalline plate heating film is installed on the bottom plate of the heating box, a sealing box is fixedly installed on the lower end surface of the microcrystalline plate heating film, and the microcrystalline plate heating film is fixedly connected to the heating box. The setting of the plate heating film can achieve the purpose of high-temperature vaporization of water droplets. At the same time, the setting of the sealing box can ensure that the user can stably install the corresponding circuit components inside to use it, so as to ensure the normal heating of the microcrystalline plate heating film. use.

Further, the air exhaust mechanism includes a rotating motor and an exhaust fan, the rotating motor is fixedly installed on the side of the heating box, and the exhaust fan is connected to the output end of the rotating motor. The purpose of stably controlling the rotating motor to drive the exhaust fan to rotate, thereby achieving the purpose of blowing air.

Further, the side of the heating box is also provided with a mist outlet pipe matched with the mist outlet, the mist outlet pipe is sealed and fixedly connected with the heating box, and the water vapor inside the heating box is ensured by the arrangement of the mist outlet pipe. The purpose of discharging to the outside can be better carried out.

Further, a tank cover is installed on the head of the water tank, the tank cover is sealed and fixedly connected to the water tank, and an operating rod is fixedly installed on the head of the tank cover, and the water tank is covered and used by the setting of the tank cover. At the same time, it is convenient to use this for the purpose of taking the box cover better by setting the operating lever.

Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention has the characteristics of reasonable design and simple operation, the present invention provides a humidifier with a heating film heating mechanism, and adopts the heating film microcrystalline plate heating technology, which greatly The energy efficiency output is improved. The heating film technology is a heating technology with low power and high thermal efficiency. The microcrystalline plate heating film technology has a far-infrared high temperature for high-temperature sterilization of water. It can be used for ordinary tap water, and the output is healthy and sterile. The water mist is controlled by the water valve on the water tank, and the water flow is passed through the water flow separation plate, and then drips onto the microcrystalline plate of the heating film to generate mist, and then the steam is discharged from the body through the fan to produce the entire working principle and structure of atomization. At the same time, the control method is simple and the cost is low.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the perspective view of the device of the present invention;

Fig. 2 is a front view of the device shown in Fig. 1;

3 is a cross-sectional view of the device shown in FIG. 2 along the A-A direction;

Fig. 4 is the structural schematic diagram of the device shown in Fig. 1 when the processing mechanism is not installed;

Figure 5 is a front view of the device shown in Figure 4;

6 is a cross-sectional view of the device shown in FIG. 5 along the B-B direction;

Fig. 7 is the structural representation of the processing mechanism shown in Fig. 1;

Figure 8 is a front view of the device shown in Figure 7;

FIG. 9 is a cross-sectional view of the device shown in FIG. 8 along the B-B direction.

In the figure: 1. Body; 11. Base; 111. Storage shell; 112. Bottom cover; 12. Top shell; 121. Installation slot; 122. Air inlet hole; 123. Mist outlet; Drain pipe; 211, control valve; 212, operating torque; 22, box cover; 221, operating rod; 3, processing mechanism; 31, heating box; 311, installation shell; 312, water drop separation plate; 313, microcrystalline plate Heating film; 314, sealed box; 315, mist outlet pipe; 32, exhaust mechanism; 321, rotating motor; 322, exhaust fan.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiment of this invention, and it is not an embodiment of all. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8 and Figure 9, a humidifier with a heating film heating mechanism includes a body 1, a water tank 2 and a processing Mechanism 3, the fuselage 1 includes a base 11 and a top shell 12. By setting the structure of the fuselage 1, it is ensured that the user can stably pass the base 11 to ensure the stability of the equipment during use. At the same time, by setting the top shell 12 To ensure that the water tank 2 and the processing mechanism 3 are installed for use, to ensure that the water tank 2 and the processing mechanism 3 can operate stably inside the top shell 12, the top shell 12 is installed on the upper end face of the base 11, and the top shell 12 is vertically and fixedly connected to the base 11. By studying the structure and use process of the traditional humidifier, a humidifier with a heating film heating mechanism is designed. The heating film microcrystalline plate heating technology is adopted, which greatly improves the energy efficiency output. The heating film technology is low power and high thermal efficiency. A kind of heating technology, the microcrystalline plate heating film 313 technology far-infrared high temperature can sterilize water at high temperature, and it can be used for ordinary tap water. The water flow rate is large, and it passes through the water flow separation plate, and then drips onto the heating film microcrystalline plate to generate mist, and then the steam is discharged from the body through the fan to generate the entire working principle and structure of the atomization. effect, to ensure that the user can stably pass the base 11 to ensure that the device can be stably placed on the ground or any horizontal position when needed, thereby ensuring the stability of the device during use, and then the user can stably The internal water storage of the water tank 2 is used, and the present invention is not a traditional ultrasonic decomposition water source, so it is not necessary to consider the problem of water quality, which greatly improves the use range of the equipment, and the user can rotate outside the equipment during use. Twist 212 to drive the control valve 211 to rotate synchronously, so as to control the amount of water supplied by the water tank 2 to the heating box 31, so that the size of the humidifier weapon can be stably controlled. In the future, the water droplet separation plate 312 will be used to separate stably, and the water droplets will drop to the lower end through different through holes on the water droplet separation plate 312, thereby realizing the purpose of separating the water source around, and finally the dripping water droplets will fall to the crystallite. On the plate heating film 313, steam is generated by the heating of the microcrystalline plate heating film 313. Since the temperature of the microcrystalline plate heating film 313 is relatively high, it can ensure that the water droplets fall on the microcrystalline plate heating film 313 and can instantly generate steam. , and the instantaneous high temperature can sterilize the water source at high temperature, so as to ensure the safety of the humidifier during use, and avoid polluting the use environment due to water quality problems. When the water source gasifies into steam, the user can stabilize Turn on the rotating motor 321 to drive the exhaust fan 322 for blowing, and then the water vapor can pass through the mist outlet 315 to reach the mist outlet 123, and finally be stably discharged into the air through the mist outlet 123, so that the humidifier can be discharged through the above process. to humidify the room and the user can not only humidify the air but also beautify the skin by controlling the discharge of water vapor, which effectively solves the problem of the simple structure of the existing humidifiers, and most of them use ultrasonic waves to irrigate the water source. Decomposition treatment, in the process of decomposition, will not only cause the water source to cool quickly, but also need to be equipped with a corresponding heating mechanism inside the humidifier, which is not convenient to use. At the same time, the traditional humidifier does not have the function of sterilizing the water source. When in use, the water source inside the water tank 2 is easy to breed bacteria, which will require higher water quality, and the interior needs to be cleaned regularly, otherwise it will cause pollution to the use environment after long-term use;

The base 11 includes a storage shell 111 and a bottom cover 112 , the bottom cover 112 is installed on the lower end surface of the storage shell 111 , and the bottom cover 112 is detachably and fixedly connected to the storage shell 111 . The storage case 111 is used to ensure the stability of the device during use. At the same time, the bottom cover 112 is arranged to facilitate the user to regularly open the lower end of the storage case 111 for cleaning. The head of the top case 12 is provided with a mounting slot 121, and The side of the top shell 12 is evenly provided with a number of air inlet holes 122, and the upper end of the top shell 12 is also provided with a mist outlet 123. The setting of the installation groove 121 ensures that the user can stably install the water tank 2 for use. The setting of the air inlet hole 122 ensures that the air exhaust mechanism 32 can better blow air, and the setting of the mist outlet 123 matches the purpose of discharging water vapor with the mist outlet pipe 315;

The water tank 2 is installed in the middle of the top shell 12, and the water tank 2 is fixedly connected with the top shell 12. The setting of the water tank 2 ensures that the user can store water stably inside, and ensures that the processing mechanism 3 is provided with a water source. A drain pipe 21 is installed on the lower end surface. The water tank 2 is sealed and fixedly connected to the heating tank 31 through the drain pipe 21, and the drain pipe 21 is fixedly connected to the water tank 2. The arrangement of the drain pipe 21 ensures that the water tank 2 can be stably connected. It is used in conjunction with the heating box 31 to ensure that the water source inside the water tank 2 can enter the heating box 31 stably. A control valve 211 is installed in the middle of the drain pipe 21. The control valve 211 is rotatably connected to the drain pipe 21, and controls The head of the valve 211 is also provided with an operating knob 212, which is fixedly connected to the control valve 211. The setting of the control valve 211 ensures that the user can stably control the flow rate of the drain pipe 21. To ensure that the user can better rotate the control valve 211 outside the device, a tank cover 22 is installed on the head of the water tank 2, the tank cover 22 is sealed and fixedly connected to the water tank 2, and the head of the tank cover 22 is fixedly installed There is an operating lever 221, which can be used to cover the water tank 2 through the setting of the tank cover 22. At the same time, the purpose of taking the tank cover 22 is better when it is convenient to use the setting of the operating lever 221;

The processing mechanism 3 includes a heating box 31 and an exhaust mechanism 32. The heating box 31 is installed at the lower end of the water tank 2, and the heating box 31 is sealed and fixedly connected to the water tank 2. The exhaust mechanism 32 is installed on the side of the heating box 31, and the exhaust mechanism 32 is fixedly connected with the heating box 31, and the structure of the processing mechanism 3 ensures that the user can stably vaporize the incoming water source through the heating box 31, and then stably discharge the water vapor through the exhaust mechanism 32. , the head of the heating box 31 is provided with a mounting shell 311, the middle of the mounting shell 311 is mounted with a water droplet separation plate 312, the water droplet separation plate 312 is fixedly connected with the mounting shell 311, and the installation of the mounting shell 311 is convenient to install the water droplet separation plate 312, To ensure that the water source entering the installation shell 311 can be dispersed and dripped through the water droplet separation plate 312, a microcrystalline plate heating film 313 is installed on the bottom plate of the heating box 31, and a sealing box 314 is fixedly installed on the lower end surface of the microcrystalline plate heating film 313. , and the microcrystalline plate heating film 313 is fixedly connected to the heating box 31, the purpose of high-temperature vaporization of water droplets is achieved by the setting of the microcrystalline plate heating film 313, and at the same time, the setting of the sealing box 314 ensures that the user can stabilize In order to ensure the normal heating use of the microcrystalline board heating film 313, the microcrystalline board heating film 313 can be used not only with heating film, but also with heating devices such as heating tubes or heating wires. The exhaust mechanism 32 includes a rotating motor 321 and an exhaust fan 322. The rotating motor 321 is fixedly installed on the side of the heating box 31, and the exhaust fan 322 is connected with the output end of the rotating motor 321. The purpose of rotating the motor 321 can be stably controlled to drive the exhaust fan 322 to rotate, thereby achieving the purpose of blowing air. The side of the heating box 31 is also provided with a mist outlet pipe 315 matched with the mist outlet 123. The mist outlet pipe 315 is connected to the heating box. 31 is sealed and fixedly connected, and the arrangement of the mist outlet pipe 315 ensures that the water vapor inside the heating box 31 can be better discharged to the outside.

The device obtained through the above design can basically meet the use of a humidifier with a heating film heating mechanism, but in order to further improve its function, the designer has further improved the device.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

A humidifier with a heating film heating mechanism, comprising a body (1), a water tank (2) and a processing mechanism (3), characterized in that the body (1) comprises a base (11) and a top case (12) ), the top case (12) is installed on the upper end face of the base (11), and the top case (12) is vertically and fixedly connected with the base (11), and the water tank (2) is installed in the middle of the top case (12), And the water tank (2) is fixedly connected with the top shell (12), the processing mechanism (3) includes a heating box (31) and an air exhaust mechanism (32), and the heating box (31) is installed at the lower end of the water tank (2) , and the heating box (31) is sealed and fixedly connected to the water tank (2), the exhaust mechanism (32) is installed on the side of the heating box (31), and the exhaust mechanism (32) is fixedly connected to the heating box (31).
A humidifier with a heating film heating mechanism according to claim 1, characterized in that the base (11) comprises a storage case (111) and a bottom cover (112), and the bottom cover (112) is installed on the The lower end surface of the storage case (111), and the bottom cover (112) and the storage case (111) are detachably and fixedly connected.
A humidifier with a heating film heating mechanism according to claim 2, characterized in that, a mounting groove (121) is formed in the head of the top case (12), and the side surface of the top case (12) is uniform. A plurality of air inlet holes (122) are provided, and a mist outlet (123) is also opened on the upper end of the top shell (12).
A humidifier with a heating film heating mechanism according to claim 3, characterized in that a drain pipe (21) is installed on the lower end surface of the water tank (2), and the water tank (2) passes through the drain pipe (21) is sealed and fixedly connected with the heating box (31), and the drain pipe (21) is fixedly connected with the water tank (2).
A humidifier with a heating film heating mechanism according to claim 4, characterized in that a control valve (211) is installed in the middle of the discharge pipe (21), and the control valve (211) is connected to the discharge pipe (21). The pipe (21) is rotatably connected, and the head of the control valve (211) is also provided with an operating torque (212), which is fixedly connected with the control valve (211).
A humidifier with a heating film heating mechanism according to claim 5, characterized in that a mounting shell (311) is provided on the head of the heating box (31), and a middle part of the mounting shell (311) is mounted with a mounting shell (311). A water droplet separation plate (312), the water droplet separation plate (312) is fixedly connected with the installation shell (311).
A humidifier with a heating film heating mechanism according to claim 6, characterized in that a microcrystalline plate heating film (313) is installed on the bottom plate of the heating box (31), and the microcrystalline plate heating film A sealing box (314) is fixedly installed on the lower end surface of (313), and the microcrystalline plate heating film (313) is fixedly connected with the heating box (31).
A humidifier with a heating film heating mechanism according to claim 7, characterized in that the exhaust mechanism (32) comprises a rotating motor (321) and an exhaust fan (322), and the rotating motor (321) is fixed It is installed on the side of the heating box (31), and the exhaust fan (322) is connected with the output end of the rotating motor (321).
A humidifier with a heating film heating mechanism according to claim 8, characterized in that, a mist outlet pipe (315) matched with the mist outlet (123) is further provided on the side of the heating box (31). , the mist outlet pipe (315) is sealed and fixedly connected with the heating box (31).
A humidifier with a heating film heating mechanism according to claim 9, characterized in that a head (22) of the water tank (2) is installed with a cover (22), and the cover (22) is connected to the water tank (2). ) is sealed and fixedly connected, and an operating rod (221) is fixedly installed on the head of the box cover (22).