CN113616840B

CN113616840B - Air sterilizer

Info

Publication number: CN113616840B
Application number: CN202010385261.5A
Authority: CN
Inventors: 石华山
Original assignee: Oped Servo Motor Energy Saving System Co ltd
Current assignee: Oped Servo Motor Energy Saving System Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2023-03-31
Anticipated expiration: 2040-05-08
Also published as: CN113616840A

Abstract

The invention discloses an air sterilizer, comprising: a housing air inlet mounted at one end of the housing; a housing air outlet mounted at the other end of the housing; a heat exchanger assembly mounted to the housing for sterilizing air, the heat exchanger assembly comprising: an air inlet passage for absorbing indoor air, having an air inlet passage air outlet and an air inlet passage air inlet connected to the housing air inlet; a hot gas channel for outputting the heated and sterilized air, which is provided with a hot gas channel air inlet and a hot gas channel air outlet connected with the shell air outlet; and the air heater is arranged between the air outlet of the air inlet channel and the air inlet of the hot air channel and used for carrying out high-temperature sterilization on the air from the air inlet channel, sending the hot air subjected to high-temperature sterilization into the hot air channel and then sending the hot air into the room through the air outlet.

Description

Air sterilizer

Technical Field

The invention relates to an air sterilizer, in particular to an air sterilizer capable of sterilizing indoor air, belonging to an air sterilizer with physical factors.

Background

The current air sterilizer comprises: the air disinfector of physical factors kills or removes microorganisms in the air by utilizing the methods of electrostatic adsorption and ultraviolet lamp, and can be used for indoor air disinfection under the condition of people, such as electrostatic adsorption type air disinfectors, ultraviolet air disinfectors and the like; the air sterilizer with chemical factors utilizes the generated chemical factors to kill microorganisms in the air so as to achieve air sterilization, and is only used for sterilizing indoor air under the unmanned condition, such as a carbon dioxide air sterilizer, an ozone air sterilizer, a hydrogen peroxide air sterilizer, a peracetic acid air sterilizer and the like; air disinfectors with other factors, such as ion air disinfectors, photocatalyst air disinfectors and the like.

The air disinfector with the physical factors has great influence on life and equipment of people, for example, the electrostatic adsorption type air disinfector can generate high static electricity to influence the working state of electronic equipment, and in addition, people living in an electrostatic environment for a long time can induce arrhythmia, cause blood calcium loss, cause skin inflammation and influence central nerves; the ultraviolet air disinfection can generate a large amount of ultraviolet rays, people can damage the skin in the environment for a long time in working and living, for example, the skin can cause red swelling, pain and desquamation, if the ultraviolet rays are irradiated for a long time, the skin can be cancerated and tumors of the skin can be caused, in addition, the ultraviolet rays can cause conjunctivitis and keratitis of eyes, the phenomena of red swelling, pain and lacrimation of the eyes can be caused, and cataract can be possibly induced after the ultraviolet rays are applied for a long time.

Disclosure of Invention

The invention mainly aims to provide an indoor air sterilizer suitable for high-temperature sterilization of people in work and life, and particularly suitable for killing coronavirus.

An air sterilizer of the present invention for achieving the above object includes:

a housing air inlet mounted at one end of the housing;

a housing air outlet mounted at the other end of the housing;

a heat exchanger assembly mounted to the housing for sterilizing air, the heat exchanger assembly comprising:

the air inlet channel is used for absorbing indoor air and is provided with an air inlet channel air outlet and an air inlet channel air inlet connected with the shell air inlet;

a hot gas path for outputting hot air, the hot gas path having a hot gas path inlet and a hot gas path outlet connected to the housing outlet;

and the air heater is arranged between the air outlet of the air inlet channel and the air inlet of the hot air channel and used for heating the air from the air inlet channel, sending the heated hot air into the hot air channel and sending the heated hot air into a room through the air outlet.

The air sterilizer of the present invention further comprises: and the ventilator is arranged between the hot gas channel gas outlet and the shell gas outlet or between the gas inlet channel gas outlet and the shell gas inlet.

Preferably, the heat exchanger assembly comprises a plurality of heat exchangers; each heat exchanger includes: a plurality of hot channels and a plurality of cold channels which are arranged in a staggered way; forming the hot gas path by joining each hot gas path of each heat exchanger with a corresponding hot gas path of an adjacent heat exchanger; the inlet air passage is formed by connecting each cold passage of each heat exchanger with a corresponding cold passage of an adjacent heat exchanger.

Preferably, each heat exchanger further comprises a heat exchanger space surrounded by an upper cover plate, a lower cover plate and four side cover plates; each heat channel in each heat exchanger is formed by hermetically connecting two metal fins in the heat exchanger space; each cold pass in each heat exchanger is formed by separating the heat exchanger spaces by all the hot passes in that heat exchanger.

Preferably, all the thermal channels in each heat exchanger are mounted side by side in the heat exchanger space and are arranged in a line coincident with the respective thermal channels of the other heat exchangers; all cold aisles in each heat exchanger are mounted side by side in the heat exchanger space and are arranged in a line coincident with the corresponding cold aisles of the other heat exchangers.

Preferably, the plurality of heat exchangers includes: the heat exchanger comprises a front-end heat exchanger, an intermediate heat exchanger connected with the front-end heat exchanger, and a rear-end heat exchanger connected with the intermediate heat exchanger, wherein the air inlet passage air inlet and the hot air passage air outlet are arranged on the front-end heat exchanger.

According to a first embodiment of the present invention, the front end heat exchanger upper cover plate has a plurality of openings for forming each hot channel air outlet of the front end heat exchanger; the front end heat exchanger has a first lower inlet per hot pass; the upper part of the first side plate of the front-end heat exchanger is provided with a first upper notch which forms all cold channel inlets of the front-end heat exchanger, and the first upper notch is used as the air inlet of the air inlet channel and is butted with the air inlet 11 of the shell; the lower part of the second side plate, which is opposite to the first side plate of the front-end heat exchanger, is provided with a first lower notch for forming outlets of all cold channels of the front-end heat exchanger; the first lower notch and the lower inlet of each heat channel of the front-end heat exchanger are positioned in the same area.

Preferably, each hot pass of the intermediate heat exchanger connecting the front end heat exchangers has a second lower outlet and a second upper inlet; the lower part of the first side plate of the intermediate heat exchanger is provided with a second lower notch opposite to the first lower notch of the front end heat exchanger, the second lower notch forms the inlet of each cold channel of the intermediate heat exchanger and is positioned in the same area with the second lower outlet of each hot channel of the intermediate heat exchanger; and a second upper notch used for forming an outlet of each cold channel of the intermediate heat exchanger is formed in the upper part of the second side plate opposite to the first side plate of the intermediate heat exchanger, and the second upper notch and a second upper inlet of each hot channel of the intermediate heat exchanger are positioned in the same area.

Preferably, the upper part of the first side plate of the rear end heat exchanger connected with the intermediate heat exchanger is provided with a third upper notch forming each cold channel outlet of the rear end heat exchanger, the third upper notch and each hot channel outlet of the rear end heat exchanger are positioned in the same area, and the third upper notch is opposite to the upper notch of the intermediate heat exchanger connected with the rear end heat exchanger.

Preferably, a connecting piece is arranged between the first lower notch of the front end heat exchanger and the second lower notch of the intermediate heat exchanger and is used for communicating each hot channel of the front end heat exchanger with each corresponding hot channel of the intermediate heat exchanger or communicating each cold channel of the front end heat exchanger with each corresponding cold channel of the intermediate heat exchanger.

Preferably, a connecting piece is arranged between the second upper notch of the intermediate heat exchanger connected with the rear end heat exchanger and the third upper notch of the rear end heat exchanger and is used for communicating each hot channel of the intermediate heat exchanger with each corresponding hot channel of the rear end heat exchanger or communicating each cold channel of the intermediate heat exchanger with each corresponding cold channel of the rear end heat exchanger.

Preferably, the connector is a first baffle plate including: a rectangular baffle cover plate; a plurality of U-shaped slots extending from said baffle plate, each U-shaped slot interposed between a hot channel of one heat exchanger and a corresponding hot channel of an adjacent one of the heat exchangers, or between a cold channel of one heat exchanger and a corresponding cold channel of an adjacent one of the heat exchangers.

According to a second embodiment of the present invention, the front end heat exchanger upper cover plate has a plurality of openings for forming each hot channel air outlet of the front end heat exchanger; the front end heat exchanger and the intermediate heat exchanger connected with the front end heat exchanger share a lower cover plate, two rows of openings are arranged side by side on the lower cover plate, and each row of openings of the lower cover plate comprises hot channel openings and cold channel openings which are distributed in a staggered mode.

Preferably, the rear heat exchanger and the intermediate heat exchanger connected thereto share an upper cover plate having two side-by-side rows of openings, each row of openings of said upper cover plate comprising hot and cold aisle openings distributed in a staggered manner.

Preferably, a second baffle assembly is provided beneath a lower cover plate common to the front heat exchanger and the intermediate heat exchanger connected thereto to form a plurality of air-tight passages abutting respective hot passage openings and respective cold passage openings of the two rows of openings of the lower cover plate; a second baffle assembly is attached to an upper cover plate common to the rear heat exchanger and the intermediate heat exchanger to which it is attached to form a plurality of air-tight passages which abut respective hot passage openings and respective cold passage openings of the two rows of openings in the upper cover plate.

Preferably, the second baffle assembly comprises a plurality of airtight passages with the same number of openings per column of the lower cover plate or the upper cover plate; each of the airtight passages has inlets or outlets on both sides corresponding to two rows of corresponding openings of the lower cover plate or the upper cover plate.

According to the first and second embodiments of the present invention, in the case where the intermediate heat exchanger is plural, the foremost intermediate heat exchanger is connected to the front-end heat exchanger, the rearmost intermediate heat exchanger is connected to the rear-end heat exchanger, and the hot and cold passages of the two intermediate heat exchangers are connected between each other by the connecting member.

Preferably, an air heater is installed below each hot aisle and each cold aisle of the rear heat exchanger, an air inlet of the air heater being air-tightly connected to an outlet of the cold aisle of each rear heat exchanger, and an air outlet of the air heater being air-tightly connected to an inlet of the hot aisle of each rear heat exchanger.

Preferably, the bottom ends of the rear heat exchanger hot channel and the cold channel are sealed by a first baffle plate and a second baffle plate which are integrally formed, and a plurality of hot gas inlets for forming each rear heat exchanger hot channel inlet are formed in the first baffle plate; the second baffle plate is provided with a plurality of cold air outlets for forming cold channel outlets of each rear end heat exchanger.

Preferably, the air heater comprises a first heating cavity corresponding to the plurality of cold air outlets and having an air inlet, and a second heating cavity corresponding to the plurality of hot air inlets and having an air outlet, wherein the bottom of the first heating cavity is communicated with the bottom of the second heating cavity; the upper end of the air heater is provided with a separation plate for separating a plurality of hot air inlets on the first separation plate and a plurality of cold air outlets on the second separation plate; and a heating element for sterilizing air is arranged in the first heating cavity and/or the second heating cavity.

Compared with the prior art, the invention has the beneficial technical effects that: the indoor air is disinfected, and meanwhile, the life and work of people are not influenced; scalding accidents to human bodies cannot be caused during the high-temperature disinfection period; the heat energy can be fully utilized, and the energy consumption is reduced; the air sterilizer can be miniaturized; the air sterilizer is flexible to place and can be placed anywhere in a room.

Drawings

FIG. 1 is an external view of an air sterilizer of the present invention;

FIG. 2a is a schematic view showing the arrangement of a plurality of heat exchangers in the air sterilizer of the present invention;

FIG. 2b is a schematic diagram showing the connection of hot and cold passes in a plurality of heat exchangers according to the present invention;

FIG. 3a is a schematic cross-sectional view of the cold aisles of a plurality of heat exchangers according to a first embodiment of the present invention;

FIG. 3b is a perspective view of the cold aisles of a plurality of heat exchangers of the first embodiment of the present invention;

FIG. 4a is a schematic cross-sectional view of the hot aisle of a plurality of heat exchangers according to a first embodiment of the present invention;

FIG. 4b is a perspective view of the hot aisle of a plurality of heat exchangers of the first embodiment of the present invention;

FIG. 4c is a schematic illustration of the connection of individual thermal paths in a row in each heat exchanger of the first embodiment of the present invention;

FIG. 4d is a perspective view of a single thermal tunnel of the first embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a first baffle assembly according to the first embodiment of the present invention;

FIG. 6 is a schematic view of a heater structure according to a first embodiment of the present invention;

FIG. 7 is a schematic view of the front end heat exchanger upper cover plate configuration of the first embodiment of the present invention;

FIG. 8 is a schematic structural view of a second baffle assembly according to the first embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view parallel to the cold aisle of a heat exchanger according to a second embodiment of the invention;

FIG. 10 is a schematic cross-sectional view parallel to the hot aisle of a heat exchanger according to a second embodiment of the invention;

FIG. 11 is a schematic structural view of a cover plate according to a second embodiment of the present invention;

FIG. 12 is a front view of a third baffle assembly of the second embodiment of the present invention;

fig. 13 is a schematic structural diagram of a third laminar flow assembly according to a second embodiment of the present invention.

Wherein: the heat exchanger includes a housing 1, an air inlet 11, an air outlet 12, a plate-fin heat exchanger 2, a first heat exchanger 21, a second heat exchanger 22, a third heat exchanger 23, a fourth heat exchanger 24, a fifth heat exchanger 25, fins 201, a hot passage 202, a cold passage 203, a cover plate 204, a first upper notch 211, a first lower notch 212, a second lower notch 221, a second upper notch 222, a third upper notch 231, a third lower notch 232, a fourth lower notch 241, a fourth upper notch 242, a fifth upper notch 251, an upper cover plate 213, a heat exchanger air outlet 214, a first baffle assembly 3, a baffle cover plate 31, a u-shaped groove 32, a heater 4, a heating element 41, a heater air inlet 42, a heater air outlet 43, a ventilator 5, a second baffle assembly 7, an end cover plate 8, a hot passage opening 81, a cold passage opening 82, a third baffle assembly 9, a baffle hot passage opening 91, a baffle cold passage opening 92, a baffle hot passage 93, and a baffle cold passage 94.

Detailed Description

Fig. 1 shows a housing 1 of an air sterilizer according to the present invention, which is provided with a housing air inlet 11 at the front side and a housing air outlet 12 at the back side (see fig. 3 b).

Fig. 2a and 2b show a heat exchanger assembly for sterilizing air mounted in a housing, comprising: an intake channel (indicated by reference numeral 203 in fig. 2 b) for taking in room air, having an intake channel air outlet and an intake channel air inlet connected to the housing air inlet 11; a hot gas path (identified by reference numeral 202 in fig. 2 b) outputting heat sterilized air, having a hot gas path inlet and a hot gas path outlet connected to the housing outlet 12; the air heater 4 (see fig. 3a, 3b, 4a and 4 b) installed between the air outlet of the air inlet channel and the air inlet of the hot air channel is used for heating the air from the air inlet channel at a high temperature, sending the hot air with the high temperature into the hot air channel, and sending the hot air to the outside of the machine body through the air outlet 12. A ventilator 5 arranged between the hot gas path outlet and the housing outlet 12.

Referring to fig. 2a, the heat exchanger assembly of the present invention comprises a plurality of heat exchangers, such as a first heat exchanger 21, a second heat exchanger 22, a third heat exchanger 23, a fourth heat exchanger 24 and a fifth heat exchanger 25, as shown. Each heat exchanger includes: a plurality of hot channels 202 and a plurality of cold channels 203 arranged in a staggered manner; the present invention forms the hot gas path by joining each hot gas path 202 of each heat exchanger with a corresponding hot gas path 202 of an adjacent heat exchanger (see FIG. 4 a); the intake air passage is formed by connecting each cold passage 203 of each heat exchanger with the corresponding cold passage 203 of the adjacent heat exchanger (see fig. 3 a).

Each heat exchanger of the present invention further includes a heat exchanger space surrounded by an upper cover plate 213, a lower cover plate 215 (see fig. 3 a), and a first side cover plate 204, a second side cover plate 205, a third side cover plate 206, and a fourth side cover plate 207 (see fig. 2 b); each heat channel 202 in each heat exchanger is formed by hermetically connecting two sides of two metal fins 201 in the space of the heat exchanger (see fig. 4 d), that is, two sides of two metal fins 201 are connected together, and openings are provided at the upper and lower parts of the two sides (for example, openings 231.1 and 232.1 may be provided at the upper part and the lower part of the left side, and openings may also be provided at the upper part and the lower part of the left side), and the top and the bottom ends of two metal fins 201 are hermetically connected by an upper cover plate and a lower cover plate, respectively; each cold aisle 203 in each heat exchanger is formed by separating the heat exchanger spaces by all the hot aisles in the heat exchanger (see fig. 2a, 3 b). In the first embodiment of the present invention, the upper cover plate 213 (excluding the upper cover plate of the front-end heat exchanger 21) and the lower cover plate 215 (excluding the lower cover plate of the rear-end heat exchanger 25) may be the rectangular baffle plate 31 of the baffle 3 shown in fig. 5, or as shown in fig. 7. It is also possible to form the individual rectangular baffle plate 7.1 together with the plate mounted thereon.

Each hot aisle 202 of each heat exchanger of the invention is installed side by side in the heat exchanger space and is arranged in a line coincident with the corresponding hot aisle of the other heat exchangers (see fig. 4 a-4 b); each cold aisle of each heat exchanger is mounted side by side in the heat exchanger space and is arranged in a line coincident with the corresponding cold aisles of the other heat exchangers (see fig. 3 a-3 b).

The plurality of heat exchangers of the present invention includes: a front end heat exchanger 21, an intermediate heat exchanger 22 connected to the front end heat exchanger, and a rear end heat exchanger 25 connected to the intermediate heat exchanger 24, wherein an intake passage air inlet and a hot gas passage air outlet are provided on the front end heat exchanger 21.

The front-end heat exchanger upper cover plate 213 of the present invention has a plurality of air outlets 214 forming the outlets of each thermal channel of the front-end heat exchanger, i.e. the upper cover plate 213 is provided with a plurality of openings 214, each opening corresponding to a thermal channel 202 formed by hermetically connecting two metal fins 201; the front end heat exchangers each hot aisle 202 has a first lower inlet 212.1 (see fig. 4 c); the upper part of the front end heat exchanger first side plate 204 is provided with a first upper notch 211 (see fig. 3 a) forming inlets of all cold channels of the front end heat exchanger, and the first upper notch 211 is used as the air inlet of the air inlet channel and butted with the shell air inlet 11; the lower part of the second side plate 205 opposite to the first side plate 204 of the front heat exchanger is provided with a first lower notch 212 (see fig. 3 a) forming the outlets of all cold channels of the front heat exchanger; the first lower indentation 212 is located in the same area as the first lower inlet 212.1 of each hot pass of the front end heat exchanger.

Each hot pass of the intermediate heat exchanger 22 of the invention connecting the front end heat exchanger 21 has a second lower outlet 221.1 and a second upper inlet 222.1 (see fig. 4 c); the lower part of the first side plate of the intermediate heat exchanger 22 has a second lower notch 221 opposite to the front heat exchanger first lower notch 212, the second lower notch 221 forming each cold channel inlet of the intermediate heat exchanger (see fig. 3 a) and being located in the same area as the second lower outlet 221.1 of each hot channel of the intermediate heat exchanger (see fig. 3a and 4 c); the upper portion of the second side plate opposite to the first side plate of the intermediate heat exchanger 22 is provided with a second upper notch 222 for forming each cold channel outlet of the intermediate heat exchanger, and the second upper notch 222 and the second upper inlet 222.1 of each hot channel of the intermediate heat exchanger are located in the same area, so that each hot channel inlet 222.1 and each cold channel outlet of the intermediate heat exchanger are formed in the same area.

The upper part of the first side plate of the rear end heat exchanger 25 connected with the intermediate heat exchanger 24 of the invention is provided with a fifth upper notch 251 forming each cold channel outlet of the rear end heat exchanger, the fifth upper notch 251 and each hot channel outlet 251.1 of the rear end heat exchanger are positioned in the same area, and the fifth upper notch 251 is opposite to the fourth upper notch 242 of the intermediate heat exchanger 24 connected with the rear end heat exchanger 25; the air heater 4 is installed below each hot aisle 202 and each cold aisle 203 of the rear heat exchanger, with its upper cover being air-tightly connected to the rear heat exchanger, and the air inlet end 42 of the air heater being air-tightly connected to the outlet of each cold aisle 203 of the rear heat exchanger, and the air outlet end 43 of the air heater being air-tightly connected to the inlet of each hot aisle 202 of the rear heat exchanger.

Referring to fig. 6, the air heating 4 of the present invention comprises a first heating chamber corresponding to a plurality of cold air outlets and having an air inlet 42 (i.e. the heating chamber on the right side in fig. 6), and a second heating chamber corresponding to the plurality of hot air inlets and having an air outlet 43 (i.e. the heating chamber on the left side in fig. 6), wherein the bottom of the first heating chamber is communicated with the bottom of the second heating chamber; the upper end of the air heater is provided with a partition plate 255 (see fig. 3 b) for partitioning a plurality of hot air inlets of the first partition plate 253 and a plurality of cold air outlets of the second partition plate 254, and the partition plate 255 extends from the boundary of the first partition plate 253 and the second partition plate 254 to the upper end of the air heater 4; the first heating cavity and/or the second heating cavity are/is internally provided with a heating element 41 for sterilizing air.

As an implementation manner, a first baffle 253 and a second baffle 254 which are integrally formed are also hermetically connected at the bottom ends of the rear end heat exchanger hot channel 202 and the cold channel 203 of the invention, and a plurality of hot gas inlets for forming each rear end heat exchanger hot channel inlet are opened on the first baffle 253; the second baffle 254 has a plurality of cold air outlets formed therein for forming the cold path outlet of each of the rear heat exchangers. Alternatively, a plurality of cold air outlets for forming an outlet of each rear heat exchanger cold passage may be formed in the first barrier 253; the second baffle 254 has a plurality of hot gas inlets formed therein for forming the inlets of each of the rear heat exchanger hot passages. Thus, the air inlet and the air outlet of the upper cover of the heater can be connected with each other in an airtight manner.

On the other hand, in the case where there are a plurality of intermediate heat exchangers, the foremost intermediate heat exchanger 22 is connected to the front-end heat exchanger 21, the rearmost intermediate heat exchanger 24 is connected to the rear-end heat exchanger 25, and the hot and cold passages of the two intermediate heat exchangers are connected by a connecting member between each two intermediate heat exchangers.

In addition, a connection is provided between the first lower notch 212 of the front heat exchanger 21 and the second lower notch 221 of the intermediate heat exchanger for connecting each hot aisle of the front heat exchanger to each corresponding hot aisle of the intermediate heat exchanger, or connecting each cold aisle of the front heat exchanger to each corresponding cold aisle of the intermediate heat exchanger.

In addition, a connection is provided between the third upper notch 251 of the rear heat exchanger 25 and the associated second upper notch 242 of the intermediate heat exchanger 24 for connecting each hot aisle 202 of the intermediate heat exchanger 24 to each corresponding hot aisle 202 of the rear heat exchanger or connecting each cold aisle 203 of the intermediate heat exchanger to each corresponding cold aisle 203 of the rear heat exchanger.

The connecting piece of the invention is a bridge piece which is arranged between two adjacent heat exchangers and is used for connecting all hot channels and all cold channels of the two adjacent heat exchangers together in an airtight mode respectively, and the bridge piece is provided with a plurality of airtight connecting bridges.

In a first embodiment of the invention, illustrated in fig. 5 of the present application, said connection element is a baffle 3 comprising: a rectangular baffle plate 31; a plurality of U-shaped grooves 32 extending from the baffle plate 31, the plurality of U-shaped grooves 32 extending from the baffle plate 31 forming a plurality of airtight passages opened at both ends. Each U-shaped channel 32 is inserted between one hot aisle 202 of one heat exchanger and a corresponding hot aisle 202 of an adjacent one of the heat exchangers, or between one cold aisle 203 of one heat exchanger and a corresponding cold aisle 203 of an adjacent one of the heat exchangers. For example, each U-shaped slot 32 of baffle 3 (the baffle located at the upper right of fig. 4 c) hermetically connects the upper outlet 251.1 of each thermal pathway 202 of the fifth heat exchanger 25 with the upper inlet 242.1 of each thermal pathway 202 of the fourth heat exchanger 24; each U-shaped slot 32 of baffle 3 (the baffle located at the lower right in fig. 4 c) hermetically connects the lower outlet 241.1 of each thermal pass 202 of the fourth heat exchanger 24 with the lower inlet 232.1 of each thermal pass 202 of the third heat exchanger 23; each U-shaped slot 32 of baffle 3 (the baffle located at the upper left in fig. 4 c) hermetically connects the upper outlet 231.1 of each hot aisle 202 of the third heat exchanger 23 with the upper inlet 222.1 of each hot aisle 202 of the second heat exchanger 22; each U-shaped slot 32 of baffle 3 (the baffle located at the lower left of fig. 4 c) hermetically connects the lower outlet 221.1 of each hot aisle 202 of second heat exchanger 22 with the lower inlet 212.1 of each hot aisle 202 of first heat exchanger 21.

In the second embodiment of the present invention, the upper cover plate of the front-end heat exchanger 21 has a plurality of openings for forming each hot-channel air outlet of the front-end heat exchanger; the front heat exchanger 21 and the intermediate heat exchanger 22 connected thereto share a lower cover plate 8 on which two side-by-side rows of openings are formed, each row of openings of the lower cover plate 8 including hot passage openings 81 (see fig. 10) and cold passage openings 82 (see fig. 9) which are alternately arranged.

The rear heat exchanger 25 and the intermediate heat exchanger 24 connected thereto of the second embodiment of the present invention share an upper cover plate 8 'having openings formed in two rows side by side, the upper cover plate 8' having the same structure as the lower cover plate 8 shown in fig. 11. Each row of openings of the upper cover plate 8' comprises hot passage openings 81' (see fig. 10) and cold passage openings 82' (see fig. 9) which are distributed in a staggered manner.

A third folding assembly 9 (which includes the cold aisle openings 92 and the hot aisle openings 91 shown in fig. 12) is added under a lower cover plate 8 common to the front-end heat exchanger 21 and the intermediate heat exchanger 22 connected thereto of the second embodiment of the invention to form a plurality of airtight aisles abutting the corresponding hot aisle openings 81 and the corresponding cold aisle openings 82 of the two rows of openings of the lower cover plate; a further third fluidic assembly 9 '(of the same construction as the third fluidic assembly 9, including cold passage openings 92' and hot passage openings 91 ') is added to an upper cover plate 8' common to the rear heat exchanger 25 and the intermediate heat exchanger 24 to which it is connected, so as to form a plurality of airtight passages (see fig. 9 and 10) which abut against the corresponding hot passage openings 81 and the corresponding cold passage openings 82 of the two rows of openings of the upper cover plate.

The third baffle assembly 9 of the second embodiment of the present invention comprises a plurality of hot baffle passages 93 and cold baffle passages 94, which have the same number of openings per row as the lower cover plate or the upper cover plate; each channel has inlets or outlets on both sides corresponding to two respective rows of openings in the lower or upper cover plate (see fig. 12 and 13).

The invention is explained in more detail below in two embodiments with reference to the figures.

First embodiment of air sterilizer

The first embodiment air sterilizer heat exchanger arrangement is shown in fig. 1 and 2a, and has a hexagonal housing 1 in which a plurality of counterflow plate-fin heat exchangers 2 having a quadrangular cross section are juxtaposed in a direction perpendicular to the gas flow direction. The number of the heat exchangers of this embodiment is 5, and the heat exchangers are a first heat exchanger 21, a second heat exchanger 22, a third heat exchanger 23, a fourth heat exchanger 24, and a fifth heat exchanger 25. The fins 201 of the heat exchanger are connected in pairs in an airtight manner, and a cavity formed in the middle is an air channel, in this embodiment, a heat channel 202; another air channel, which is a cold channel 203 in this embodiment, is formed between the two adjacent groups and the inner side of the side cover 204 or between the head and tail groups and the inner side of the three side cover. The heat exchanger is in a single stack arrangement with each hot aisle 202 being arranged adjacent to a cold aisle 203. The fins 201 of the heat exchanger are preferably formed by aluminum press working.

As shown in fig. 3a and 4a, the upper end of the side cover plate 204 of the first heat exchanger 21 is provided with a first upper notch (or first notch) 211 corresponding to the air inlet 11 formed at the upper section of the side surface of the housing 1, and the indoor air enters the cold channel 203 of the first heat exchanger 21 and flows downward; the lower end of the other side cover plate 205 of the first heat exchanger 21 is opened with a first lower notch (or a second notch) 212, the lower end of the side cover plate 204 of the second heat exchanger 22 is correspondingly opened with a second lower notch (or a third notch) 221, the first lower notch 212 and the second lower notch 221 are provided with a first baffle component 3 for connecting, and the input gas of the first heat exchanger 21 is baffled and guided into the second heat exchanger 22. The structure of the first baffle assembly 3 is shown in fig. 5, which has a square baffle cover plate 31 for covering the upper end surface of the heat exchanger, U-shaped grooves 32 with the number corresponding to the number of the hot passages 202 or the cold passages 203 are protruded from one end of the cover plate, the U-shaped grooves 32 are placed into a first lower notch 212 formed at the lower end of the first heat exchanger 21 and a second lower notch 221 formed at the lower end of the second heat exchanger 22, each U-shaped groove 32 is correspondingly inserted into the hot passages 202 or the cold passages 203, and three groove walls of the baffle cover plate 31 and the U-shaped grooves are hermetically connected with the heat exchanger fins 201 and the cover plate 204. The input gas is baffled and guided into the second heat exchanger 22 to flow upwards, similarly, the upper end of the cover plate at the other side of the second heat exchanger 22 is provided with a second upper notch (or a fourth notch) 222, the upper end of the side cover plate of the third heat exchanger 23 is provided with a third upper notch (or a fifth notch) 231, the second upper notch 222 and the third upper notch 231 are also provided with a first baffling component 3 for connection, and the input gas of the second heat exchanger 22 is baffled and guided into the third heat exchanger 23; similarly, the lower end of the cover plate on the other side of the third heat exchanger 23 is provided with a third lower notch (or a sixth notch) 232, the lower end of the cover plate on the side of the fourth heat exchanger 24 is provided with a fourth lower notch (or a seventh notch) 241, and the third lower notch 232 and the fourth lower notch 241 are also provided with a first baffle assembly 3 for connection so as to baffle and guide the gas input by the third heat exchanger 23 into the fourth heat exchanger 24; similarly, the upper end of the cover plate on the other side of the fourth heat exchanger 24 is provided with a fourth upper notch (or eighth notch) 242, the upper end of the cover plate on the side of the fifth heat exchanger 25 is provided with a fifth upper notch (or ninth notch) 251, and the fourth upper notch 242 and the fifth upper notch 251 are also provided with a first baffle assembly 3 for connecting, so as to baffle and guide the gas input from the fourth heat exchanger 24 into the fifth heat exchanger 25. The heater 4 is arranged at the lower end of the fifth heat exchanger, the heater structure is shown in fig. 3b, 4a and 7, a left cavity and a right cavity are arranged in the shell, the top parts of the two cavities are isolated, the bottom parts of the two cavities are communicated, heating elements 41 are arranged in the two cavities, and a heater air outlet 43 and a heater air inlet 42 are arranged on the left side and the right side of the top plate of the shell respectively corresponding to a hot channel and a cold channel of the fifth heat exchanger 25. The cold aisle 203 at the lower end of the fifth heat exchanger 25 is connected to the heater air inlet 42 in an airtight manner, and the hot aisle 202 at the lower end of the fifth heat exchanger 25 is connected to the heater air outlet 43 in an airtight manner. The gas enters the heater 4, is heated, is discharged from the gas outlet 43 to the hot channel 202 of the fifth heat exchanger 25 to flow upwards, is deflected by the first baffle assembly 3 to be introduced into the hot channel of the fourth heat exchanger 24 to flow downwards, is deflected by the first baffle assembly 3 to be introduced into the hot channel of the third heat exchanger 23 to flow upwards, is deflected by the first baffle assembly 3 to be introduced into the hot channel of the second heat exchanger 22 to flow downwards, and finally is deflected by the first baffle assembly 3 to be introduced into the hot channel of the first heat exchanger 21 to flow upwards. As shown in fig. 7, the upper cover 213 of the first heat exchanger 21 is opened with a heat exchanger air outlet 214 connected to the hot channel. The ventilator 5 is installed at the upper end of the upper cover plate 213 and the hot air drawn out of the hot path of the heat exchanger is discharged through the housing outlet 12. The connection process can adopt various modes such as welding, bonding and the like which can achieve the airtight fixing effect.

The ventilator 5 of the present embodiment is disposed downstream of the heat exchanger air outlet 214. Of course, in order to enhance the gas circulation capability, the ventilator 9 may be fixedly installed on the gas inlet 11, or flexibly designed and installed at a suitable position in the channel according to the gas circulation requirement.

The heating element 41 may be a heating wire, a quartz tube, or PTC ceramic. Preferably, PTC heaters such as those manufactured by Hainingyong electronic ceramic, inc. models MZF150, MZF180, MZF205, MZF220, and MZF255 are used. The PTC heating element may also be made of honeycomb ceramic, which is sintered into a cross-sectional shape suitable for plugging the cavity. The surface temperature of the PTC heating element or the heater is 180-220 ℃ or 220-280 ℃. Wherein, the honeycomb should be sintered to a suitable size: finer heating is better, but the airflow resistance increases. The size for optimum effect can be obtained by experiment or/and calculation.

In order to prevent heat loss, the surface of the cover plate of each heat exchanger is covered with a heat-insulating layer 6 (not shown), and the processes of sheathing with heat-insulating PU (polyurethane) pipes, spraying heat-insulating coatings and the like can be adopted.

The air sterilizing machine of this embodiment extracts indoor polluted gas through the ventilator 5 and gets into the cold passageway 203 of first heat exchanger 21 by the air inlet 11 that shell 1 lateral wall upper end was seted up, the cold passageway of 4 series connection's adverse current plate-fin heat exchanger 2 is guided to flow behind it by first baffling subassembly 3 respectively again, gather and heat more than 180 degrees at fifth heat exchanger 25 lower extreme via heater 4, carry out the high temperature to harmful bacterium and the virus in the polluted gas and kill, high-temperature gas baffling passes through 5 series connection's adverse current plate-fin heat exchanger 2's hot passageway, discharge to the machine outside through the gas outlet 12 that heat exchanger gas outlet 214 was seted up to shell 1 lateral wall upper end at last. When the high-temperature gas flows through the hot channel of the counterflow plate-fin heat exchanger, the high-temperature gas and the low-temperature input gas in the cold channel of the counterflow plate-fin heat exchanger can exchange heat. As shown in fig. 3 and 4, the heated highest temperature gas (assumed as 180 degrees) enters the hot channel of the fifth heat exchanger 25, the temperature of the gas is reduced from 180 degrees to 155 degrees through heat transfer, the input gas of the cold channel adjacent to the gas forms a certain temperature difference with the output gas of the hot channel to be heated, and the temperature is increased from 130 degrees to 155 degrees; similarly, the hot channel gas temperature entering the fourth heat exchanger 24 is reduced from 155 degrees to 130 degrees through heat transfer, the cold channel gas adjacent to the hot channel gas forms a certain temperature difference heat exchange with the hot channel gas, and the temperature is increased from 105 degrees to 130 degrees through heat transfer; the temperature of the gas entering the hot channel of the third heat exchanger 23 is gradually decreased from 130 degrees to 105 degrees through heat transfer, the gas of the cold channel adjacent to the gas of the hot channel forms certain temperature difference heat exchange with the gas of the hot channel, and the temperature is gradually increased from 80 degrees to 105 degrees; the temperature of the gas entering the hot channel of the second heat exchanger 22 is reduced from 105 degrees to 80 degrees through heat transfer, the gas of the cold channel adjacent to the gas forms certain temperature difference heat exchange with the gas of the hot channel, and the temperature is increased from 55 degrees to 80 degrees through heat transfer; finally, the gas temperature of the hot channel of the first heat exchanger 2 is reduced from 80 ℃ to 55 ℃ through heat transfer, the gas of the adjacent cold channel and the gas of the hot channel form certain temperature difference heat exchange, the temperature is increased from 30 ℃ which is supposed to be the inlet gas temperature to 55 ℃ through heat transfer, so that the dividing wall type heat exchange with the maximum average temperature and pressure is formed, the input gas can be preheated more fully before being heated by the heater 4 to increase the temperature, the time and the consumed power for heating the input gas to be more than 180 ℃ through the heater are less, and the gas can reach the set temperature of 180 ℃ or more quickly, and the harmful bacteria and viruses are killed through flash evaporation.

In other variants, for example, the second baffle assembly 7 shown in fig. 8 is used, which has a single U-shaped slot protruding below the strip-shaped cover plate. The second baffling component 7 is easy to insert into a hot channel or a cold channel of the heat exchanger, is reliably connected with the air tightness of the channels, the number of the second baffling components 7 corresponds to the number of the hot channels or the cold channels which need to be connected, a cover plate for sealing the end face of the heat exchanger is also needed to be connected on the end face of the second baffling component 7, and air outside the U-shaped groove is sealed and guided. The connection process can adopt various modes such as welding, bonding and the like which can achieve the airtight fixing effect.

Second embodiment of air sterilizer

The structure of the air sterilizer of the second embodiment is a modified design of the first embodiment, and the difference from the first embodiment mainly lies in that the baffle assembly and the upper and lower end cover plate structures of the heat exchanger are different, specifically as shown in fig. 9 and 10, the lower end of the first heat exchanger 21 and the lower end of the second heat exchanger 22 of the embodiment are provided with the heat exchanger end cover plate 8, the end cover plate 8 structure is shown in fig. 10, and is provided with two rows of openings side by side, which respectively correspond to the two adjacent heat exchangers, and each row of openings are respectively provided with a hot channel opening 81 corresponding to a hot channel of the heat exchanger and a cold channel opening 82 corresponding to a cold channel of the heat exchanger, which are alternately arranged and are hermetically connected with the hot channel and the cold channel of the heat exchanger. The third folded assembly 9 is arranged at the lower end of the sealing cover plate 8, the structure of the third folded assembly 9 is as shown in fig. 11 and fig. 12, a hot deflection channel 93 and a cold deflection channel 94 corresponding to the hot channel and the cold channel of the heat exchanger are arranged in the third folded assembly 9, a hot deflection channel opening 91 and a cold deflection channel opening 92 are correspondingly arranged on the end surface connected with the sealing cover plate 8, and the hot deflection channel opening 81 and the cold deflection channel opening 82 of the sealing cover plate 8 are respectively and hermetically communicated with the hot channel and the cold channel of the heat exchanger. Similarly, the upper end of the second heat exchanger 22 and the upper end of the third heat exchanger 23; the lower end of the third heat exchanger 23 and the lower end of the fourth heat exchanger 24; the upper end of the fourth heat exchanger 24 and the upper end of the fifth heat exchanger 25 are connected by a sealing cover plate 8 and a third folded flow assembly 9, and the hot channel of the adjacent heat exchanger and the cold channel of the adjacent heat exchanger are respectively communicated in series. The connection process can adopt various modes such as welding, bonding and the like which can achieve the airtight fixing effect.

The air disinfection machine of this embodiment extracts indoor polluted gas through the ventilation fan 5 and gets into the cold passageway 203 of first heat exchanger 21 from the air inlet 11 that shell 1 lateral wall upper end was seted up, and the cold passageway of 4 series connection's adverse current plate-fin heat exchanger 2 is guided to flow through it respectively by third folded flow subassembly 9 again, gathers and heats more than 180 degrees at fifth heat exchanger 25 lower extreme via heater 4, carries out the high temperature to harmful bacterium and the virus in the polluted gas and kills, and high-temperature gas baffling passes through 5 series connection's fork flow plate-fin heat exchanger 2's hot passageway, and the gas outlet 12 that offers to shell 1 lateral wall upper end through heat exchanger gas outlet 214 is discharged to the machine outward finally. When the high-temperature gas flows through the hot channel of the counterflow plate-fin heat exchanger, the high-temperature gas and the low-temperature input gas in the cold channel of the counterflow plate-fin heat exchanger can exchange heat. The heat exchange process is similar to that of the first embodiment, and is not described herein again. Therefore, the input gas can be preheated more fully before being heated by the heater to increase the temperature, so that the time and the consumed power for heating the input gas to be more than 180 ℃ by the heater are less, and the input gas can reach the set temperature of 180 ℃ or more quickly to be flashed to kill harmful bacteria and viruses.

Although the present invention has been described in detail, the present invention is not limited thereto, and those skilled in the art can make various modifications according to the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.

Claims

1. An air sterilizer, comprising:

a housing air inlet mounted at one end of the housing;

a housing air outlet mounted at the other end of the housing;

a heat exchanger assembly mounted within the housing for sterilizing air, the heat exchanger assembly comprising:

an air inlet passage for absorbing indoor air, having an air inlet passage air outlet and an air inlet passage air inlet connected to the housing air inlet;

the air heater is arranged between the air outlet of the air inlet channel and the air inlet of the hot air channel and is used for heating the air from the air inlet channel, sending the heated hot air into the hot air channel and sending the heated hot air into a room through the air outlet;

the heat exchanger assembly comprises a front-end heat exchanger, an intermediate heat exchanger connected with the front-end heat exchanger, and a rear-end heat exchanger connected with the intermediate heat exchanger;

the upper cover plate of the front-end heat exchanger is provided with a plurality of openings for forming each hot channel air outlet of the front-end heat exchanger; the front end heat exchanger has a first lower inlet per hot pass; the upper part of the first side plate of the front-end heat exchanger is provided with a first upper notch for forming inlets of all cold channels of the front-end heat exchanger, and the first upper notch is used as an air inlet of the air inlet channel and is butted with the air inlet of the shell; the lower part of the second side plate, which is back to the first side plate of the front-end heat exchanger, is provided with a first lower notch for forming outlets of all cold channels of the front-end heat exchanger; the first lower notch and the lower inlet of each heat channel of the front-end heat exchanger are positioned in the same area.

2. An air sterilizer of claim 1, further comprising: and the ventilator is arranged between the hot gas channel air outlet and the shell air outlet or between the air inlet channel air outlet and the shell air inlet.

3. An air sterilizer as claimed in claim 1 or 2, wherein the front, intermediate and rear heat exchangers each comprise: a plurality of hot channels and a plurality of cold channels which are arranged in a staggered way; forming the hot gas path by connecting each hot gas path of each heat exchanger with a corresponding hot gas path of an adjacent heat exchanger; the inlet air passage is formed by connecting each cold passage of each heat exchanger with a corresponding cold passage of an adjacent heat exchanger.

4. An air sterilizer as claimed in claim 3, wherein each heat exchanger further comprises a heat exchanger space surrounded by an upper cover plate, a lower cover plate and four side cover plates; each heat channel in each heat exchanger is formed by hermetically connecting two metal fins in the heat exchanger space; each cold pass in each heat exchanger is formed by separating the heat exchanger spaces by all the hot passes in that heat exchanger.

5. An air sterilizer as claimed in claim 4 wherein all of the thermal pathways in each heat exchanger are mounted side by side in the heat exchanger space and are arranged in a line coincident with the respective thermal pathways of the other heat exchangers; all cold aisles in each heat exchanger are mounted side by side in the heat exchanger space and are arranged in a line coincident with the corresponding cold aisles of the other heat exchangers.

6. An air sterilizer as claimed in claim 3, wherein the inlet air passage inlet and the outlet air passage outlet are provided in the front end heat exchanger.

7. An air sterilizer as claimed in claim 1, wherein each of the hot aisles of the intermediate heat exchanger to which the front end heat exchanger is connected has a second lower outlet and a second upper inlet; the lower part of the first side plate of the intermediate heat exchanger is provided with a second lower notch opposite to the first lower notch of the front end heat exchanger, the second lower notch forms the inlet of each cold channel of the intermediate heat exchanger and is positioned in the same area with the second lower outlet of each hot channel of the intermediate heat exchanger; the upper part of the second side plate, which is opposite to the first side plate of the intermediate heat exchanger, is provided with a second upper notch for forming an outlet of each cold channel of the intermediate heat exchanger, and the second upper notch and a second upper inlet of each hot channel of the intermediate heat exchanger are positioned in the same area.

8. An air sterilizer as claimed in claim 6, wherein the upper portion of the first side plate of the rear heat exchanger to which the intermediate heat exchanger is connected has a third upper notch forming each cold path outlet of the rear heat exchanger, the third upper notch is located in the same region as each hot path outlet of the rear heat exchanger, and the third upper notch is opposite to the upper notch of the intermediate heat exchanger to which the rear heat exchanger is connected.

9. An air sterilizer as claimed in claim 7, wherein a connection is provided between the first lower notch of the front heat exchanger and the second lower notch of the intermediate heat exchanger for connecting each hot aisle of the front heat exchanger to each corresponding hot aisle of the intermediate heat exchanger or for connecting each cold aisle of the front heat exchanger to each corresponding cold aisle of the intermediate heat exchanger.

10. An air sterilizer as claimed in claim 7 or 8, wherein a connecting member is provided between the second upper notch of the intermediate heat exchanger connected to the rear heat exchanger and the third upper notch of the rear heat exchanger for communicating each hot channel of the intermediate heat exchanger with each corresponding hot channel of the rear heat exchanger or communicating each cold channel of the intermediate heat exchanger with each corresponding cold channel of the rear heat exchanger.

11. An air sterilizer as defined in claim 10 wherein the connector is a first baffle plate comprising:

a rectangular baffle cover plate;

a plurality of U-shaped slots extending from said baffle plate, each U-shaped slot interposed between a hot channel of one heat exchanger and a corresponding hot channel of an adjacent one of the heat exchangers, or between a cold channel of one heat exchanger and a corresponding cold channel of an adjacent one of the heat exchangers.

12. An air sterilizer as claimed in claim 6, wherein the upper cover plate of the front end heat exchanger has a plurality of openings for forming each hot aisle air outlet of the front end heat exchanger; the front end heat exchanger and the intermediate heat exchanger connected with the front end heat exchanger share a lower cover plate, two rows of openings are arranged side by side on the lower cover plate, and each row of openings of the lower cover plate comprises hot channel openings and cold channel openings which are distributed in a staggered mode.

13. An air sterilizer as claimed in claim 1 wherein the rear heat exchanger and the intermediate heat exchanger connected thereto share a common upper cover plate having two side-by-side rows of openings, each row of openings comprising hot and cold aisle openings in a staggered arrangement.

14. An air sterilizer as claimed in claim 12 or 13, wherein a second baffle assembly is provided beneath a lower cover plate common to the front heat exchanger and the intermediate exchanger connected thereto to form a plurality of air-tight passages abutting against respective hot passage openings and respective cold passage openings of the two rows of openings of the lower cover plate; a second baffle assembly is attached to an upper cover plate common to the rear heat exchanger and the intermediate heat exchanger to which it is attached to form a plurality of air-tight passages which abut respective hot passage openings and respective cold passage openings of the two rows of openings in the upper cover plate.

15. An air sterilizer as claimed in claim 14, wherein the second baffle assembly comprises a plurality of airtight passages as many as the number of openings per column of the lower cover plate or the upper cover plate; each of the airtight passages has inlets or outlets on both sides corresponding to two rows of corresponding openings of the lower cover plate or the upper cover plate.

16. An air sterilizer as claimed in claim 3, wherein in case of plural intermediate heat exchangers, the foremost intermediate heat exchanger is connected to the front end heat exchanger, the rearmost intermediate heat exchanger is connected to the rear end heat exchanger, and the hot and cold passages of the two intermediate heat exchangers are connected between each other by a connecting member.

17. An air sterilizer as claimed in claim 16 wherein an air heater is mounted below each hot aisle and each cold aisle of the rear heat exchanger, an air inlet end of the air heater being air tightly connected to an outlet of the cold aisle of each rear heat exchanger and an air outlet end of the air heater being air tightly connected to an inlet of the hot aisle of each rear heat exchanger.

18. An air sterilizer as claimed in claim 17, wherein the rear heat exchanger hot and cold aisle bottom ends are sealed with first and second integrally formed baffles, the first baffle having a plurality of hot air inlets formed therein for forming each of the rear heat exchanger hot aisle inlets; the second baffle plate is provided with a plurality of cold air outlets for forming the cold channel outlet of each rear-end heat exchanger.

19. The air sterilizer of claim 18, wherein the air heater comprises a first heating chamber corresponding to the plurality of cold air outlets and having an air inlet, and a second heating chamber corresponding to the plurality of hot air inlets and having an air outlet, wherein the bottom of the first heating chamber and the bottom of the second heating chamber are in communication; the upper end of the air heater is provided with a partition plate for isolating a plurality of hot air inlets on the first partition plate and a plurality of cold air outlets on the second partition plate; and a heating element for heating air is arranged in the first heating cavity and/or the second heating cavity.