CN113091161A

CN113091161A - Central fresh air purification system for refrigeration and heating

Info

Publication number: CN113091161A
Application number: CN201911400782.7A
Authority: CN
Inventors: 宋宝山; 刘宝东; 于淑英; 于婷; 宋硕
Original assignee: Qinhuangdao Xinwei Environmental Protection Technology Co ltd; Changde Tobacco Machinery Co Ltd
Current assignee: QINHUANGDAO XINWEI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd.
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2021-07-09

Abstract

The invention belongs to the technical field of air conditioning devices, in particular to a central fresh air purification system for cooling and heating; by setting an air distribution device, the fresh air can be cooled, heated, filtered and purified and deodorized in multiple rooms through one device, The longest air supply distance can reach 30 meters, and the air volume is not attenuated, and central centralized control can be achieved; by setting only one layer of glass fiber filter and multi-functional filter to purify the fresh air and remove peculiar smell, the purification index can be achieved. , simplifies the structure of the purification outdoor unit, reduces the frequency of filter material replacement, reduces wind resistance, and increases the fresh air throughput; by using a wave-shaped white wire mesh primary filter, the filter area is increased, which can be cleaned and prolong the replacement cycle. ; By setting a double-layer white steel turbine cover filled with foaming agent in the middle, and a water filter hole at the bottom, the problem of equipment failure under the influence of cold and warm air is solved. In addition, the system has strict structure and reasonable design, and is suitable for social promotion.

Description

Central fresh air purification system for refrigeration and heating

Technical Field

The invention belongs to the technical field of air conditioning devices, and particularly relates to a central fresh air purification system for refrigeration and heating.

Background

With the improvement of living standard of people, people have higher and higher requirements on the environment around the people, and the people hope that the air around the people is clean and safe. However, with the development of economy, the air environment is continuously worsened, people are continuously disturbed by the haze weather, the three items of sulfur dioxide, nitrogen oxide and inhalable particles are the main components of haze, harmful particles in the air contain various fine particles and more than 20 toxic substances which are harmful to human bodies, and if people live and work in the environment with poor air quality for a long time, the reduction of the respiratory function and the generation of respiratory system diseases are caused, and the life is threatened. In addition, the residual formaldehyde in the existing indoor decoration exceeds the standard, and the influence is caused to the living environment, so that the fresh air purifying equipment is more and more popular with consumers. But traditional clarification plant is only pure to the space purification filtration, can't reduce formaldehyde concentration simultaneously, can realize the regulation to air temperature again.

In prior art, some refrigerate, heat and filtration purify the new trend to a room alone, can not realize many rooms central control, and the filter needs the multilayer to set up or receives the influence of material in existing equipment in addition, and the filter media life-span is short, makes the change frequency increase, and the equipment fan is easy to break down because of the influence that receives cold and warm air.

Disclosure of Invention

The invention aims to solve the problems and provide a central fresh air purification system for refrigeration and heating; by arranging the air distribution device, a plurality of rooms can refrigerate, heat and filter and purify fresh air through one device, the longest air supply distance can reach 30 meters, the air quantity is not attenuated, and central centralized control can be realized; the purification index can be achieved by only arranging one layer of glass fiber filter and the multifunctional filter for purifying and removing peculiar smell of fresh air, the structure of the purification external unit is simplified, the replacement frequency of filter materials is reduced, the wind resistance is reduced, and the fresh air throughput is increased; by adopting the wave-shaped white steel wire mesh primary filter, the filtering area is increased, the filter can be cleaned, and the replacement period is prolonged; through setting up the double-deck white steel sheet turbine cover of filling foamer in the middle of, its bottom is equipped with the drainage hole, solves the problem that receives the influence equipment of changes in temperature air and easily breaks down. In addition, the system has a strict structure and a reasonable design, and is suitable for social popularization and use.

In order to achieve the purpose, the invention is realized by the following technical means:

a central fresh air purification system for refrigeration and heating is composed of a cold-heat exchanger, a control device, an air distribution device, a control panel, an air inlet pipeline, a lead, an external purification unit, an external air conditioner unit, an air supply pipeline and an air supply branch pipe. The cold-heat exchanger is arranged on the purifying outer machine, the left side of the cold-heat exchanger is connected with the air supply pipeline through a flange plate, and the right side of the cold-heat exchanger is connected with the air conditioner outer machine through a copper pipe. The control device is placed indoors and connected with a control panel arranged on a wall through a wire, and the control device is respectively connected with a power supply, a cold-heat exchanger, a purification outdoor unit and an air conditioner outdoor unit through wires. The air separation device is arranged on an indoor wall or in an indoor ceiling, one end of the air separation device is provided with an air separation opening which is connected with an air supply pipeline in a sealing way, and the front vertical surface and the rear vertical surface are respectively provided with two air supply branch pipes. The purification outer machine is arranged at the lower part of the cold-heat exchanger, and an air inlet pipeline is arranged at the left side of the purification outer machine and connected with the cold-heat exchanger through a flange plate.

Furthermore, the cold-heat exchanger comprises a top cover, a heating pipe, a cold-heat exchanger shell, a low-pressure pipe, a low-pressure expansion angle valve, a high-pressure expansion angle valve, silencing cotton, a high-pressure pipe, a silencing plate, a partition plate, a refrigerating pipe, a refrigerating temperature controller, a heating temperature controller and an induction head. The cold and heat exchanger outside is provided with cold and heat exchanger casing, and upper portion sets up the top cap, the cold and heat exchanger right side is provided with low pressure expansion angle valve, high pressure expansion angle valve, the hole that the refrigeration pipe was arranged according to the refrigeration support, passed on the refrigeration support is fixed on the refrigeration support, and refrigeration support bottom is equipped with the picture peg and inserts admittedly in the draw-in groove of the inboard bottom of heat exchanger. The utility model discloses a cold and heat exchanger, including cold and heat exchanger shell, baffle, heat exchanger shell, baffle, heat exchanger shell left side inner wall, be provided with two holes on the left of the cold and heat exchanger shell, be provided with the baffle on the baffle, preceding, back, right side of cold and heat exchanger shell inner wall and top cap all are provided with the acoustical panel, the acoustical panel inboard is provided with the amortization cotton, be provided with a plurality of rectangular hole on.

Furthermore, one side of the heating temperature controller is connected with the induction head through a sensing wire, the induction head is inserted into the hole, and the heating temperature controller is respectively connected with the control device and the heating pipe through conducting wires. The two ends and the middle part of the heating pipe are fixed in the cold-heat exchanger through heating supports arranged on the partition plate, and the heating pipe is provided with cooling fins to increase the heat dissipation area.

Furthermore, the cooling pipe is provided with a cooling fin to increase the cooling area, the cooling pipe is connected with a low-pressure pipe, a high-pressure pipe and a cooling temperature controller, the low-pressure pipe is connected with a low-pressure expansion angle valve, one end of the high-pressure pipe is provided with a filter, and the high-pressure pipe is connected with the high-pressure expansion angle valve.

Furthermore, the refrigeration temperature controller is connected with the induction head through a sensing wire, the induction head is inserted into the hole, and the refrigeration temperature controller is respectively connected with the control device through a conducting wire.

Furthermore, the control device is respectively connected with a heating temperature controller, a refrigerating temperature controller, an air conditioner external unit and a motor in the purification external unit in the cold-heat exchanger through leads.

Further, the purifying outer machine comprises a purifier shell, an air outlet, a filter element frame, a glass fiber filter, a water filtering hole, a multifunctional filter, a white steel wire mesh primary filter, a waterproof baffle and a filter element baffle plate, wherein the front end of the purifier shell is provided with a front cover plate, the front cover plate is provided with a plurality of strip holes, the upper end of the purifier shell is provided with a top plate, the rear end of the purifier shell is provided with a rear cover plate, the lower end of the purifier shell is provided with a bottom plate, the bottom plate is provided with a water leakage port, the middle part in the purifier shell is provided with the filter element frame, the filter element baffle plate is arranged in the filter element frame, the glass fiber filter and the multifunctional filter are sequentially arranged at the front end of the filter element frame, the front end of the multifunctional filter is provided with a short baffle plate, the short baffle, the turbine cover is made for the double-deck galvanized sheet of middle packing foamer, fixes mutually through the stub beam between filter core frame and the back plate, is provided with the mounting hole on the stub beam, is provided with the wind wheel in the turbine cover, is provided with a plurality of side strips around the wind wheel, is provided with one-way three-speed motor in the wind wheel, and turbine cover rear end is provided with the back plate, and turbine cover bottom sets up the drainage hole, and turbine cover one side is provided with the air outlet and is connected with the intake stack, and the intake stack both ends are 90 crooked.

Furthermore, two adjacent surfaces of the filter element frame are folded inwards by 90 degrees, and the filter element frame is fixed by the aquarium tube edible glass cement. The rotation number of the unidirectional three-speed motor is 850 revolutions per minute, 650 revolutions per minute and 450 revolutions per minute respectively.

Further, the cold-heat exchanger, the controller panel, the air conditioner outer unit, the top cap, the heating pipe, the cold-heat exchanger casing, the low-pressure pipe, the high-pressure pipe, the acoustical panel, the fin, the baffle, refrigeration support, refrigeration pipe, inductive head, sensing line, the support that heats, the clarifier shell, turbine cover, back shroud, back plate, waterproof baffle, filter core baffle, roof, front shroud, the material of bolt all adopt white steel material to prepare and form, the motor and the power connection in the purification outer unit.

Further, the system can be arranged outdoors or a plurality of sets of the system can be arranged in a machine room in a centralized manner.

The invention mainly has the following beneficial effects:

1. the system is provided with the air distribution device, so that a plurality of rooms can refrigerate, heat, filter and purify fresh air and remove peculiar smell through one device, the longest air supply distance can reach 30 meters, the air quantity is not attenuated, and central centralized control can be realized.

2. The system is provided with a layer of glass fiber filter and a multifunctional filter for purifying and removing peculiar smell of fresh air, so that the purification index can be reached, the structure of the purification external machine is simplified, the replacement frequency of filter materials is reduced, the wind resistance is reduced, and the fresh air throughput is increased; the adoption presses into the white steel silk screen primary filter of wave, has increased filtration area, through can rinsing, prolongs the replacement cycle.

3. The system is provided with a double-layer white steel plate turbine cover filled with foaming agent in the middle, and the bottom of the double-layer white steel plate turbine cover is provided with water filtering holes, so that the problem that equipment is prone to failure due to the influence of cold and warm air is solved.

4. The exchanger has a strict structure and a reasonable design, and is suitable for social popularization and use.

Drawings

FIG. 1 is a schematic perspective view of a central fresh air purification system for refrigeration and heating according to the present invention.

FIG. 2 is a top view of a cold-heat exchanger of a central fresh air purification system for cooling and heating according to the present invention.

FIG. 3 is a schematic view of a refrigeration tube structure of a central fresh air purification system for refrigeration and heating according to the present invention.

FIG. 4 is a schematic view of a refrigeration support of the central fresh air purification system for refrigeration and heating according to the present invention.

FIG. 5 is a schematic structural diagram of a sound-absorbing panel of a central fresh air purification system for refrigeration and heating.

FIG. 6 is a schematic view of a heating pipe structure of a central fresh air purification system for refrigeration and heating according to the present invention.

FIG. 7 is a schematic structural view of a heating temperature controller of a central fresh air purification system for refrigeration and heating according to the present invention.

FIG. 8 is a schematic view of the internal structure of the air distribution device of the central fresh air purification system for refrigeration and heating.

FIG. 9 is a schematic view of the air distribution port of the central fresh air purification system for refrigeration and heating according to the present invention.

FIG. 10 is a top view of an external purifying unit of the central fresh air purifying system for cooling and heating according to the present invention.

FIG. 11 is a schematic structural view of a purifying outdoor unit of a central fresh air purifying system for refrigeration and heating according to the present invention.

FIG. 12 is a schematic diagram of the main structure of a central fresh air purification system for refrigeration and heating according to the present invention.

FIG. 13 is a wind wheel sectional view of a central fresh air purification system for refrigeration and heating according to the present invention.

FIG. 14 is a front view of a wind wheel of a central fresh air purification system for refrigeration and heating.

FIG. 15 is a schematic diagram of a filter element partition plate of the central fresh air purification system for refrigeration and heating.

FIG. 16 is a schematic view of a primary filter made of white steel wire mesh for a central fresh air purification system for refrigeration and heating according to the present invention.

As shown in fig. 1-16, the various parts of the figure are represented by the following arabic numerals:

a cold-heat exchanger-1, a control device-2, a wind distribution device-3, a control panel-4, an air inlet pipeline-5, a lead-wire-6, an external purifying machine-7, an external air conditioner-8, an air supply pipeline-9, an air supply branch pipe-10, a flange-11, a top cover-101, a heating pipe-108, a cold-heat exchanger shell-109, a low-pressure pipe-110, a low-pressure expansion angle valve-111, a high-pressure expansion angle valve-112, silencing cotton-113, a high-pressure pipe-114, a silencing plate-115, a radiating fin-116, a partition plate-117, a refrigerating bracket-118, a plug plate-1181, a refrigerating pipe-119, a refrigerating temperature controller-120, a heating temperature controller-121, an induction head-122, a hole-123, a sensing wire-124, The air purifier comprises a filter-125, a heating support-126, an air distribution port-31, a purifier shell-701, a turbine cover-702, a rear cover plate-703, a rear plate-704, a mounting hole-705, an air outlet-706, a filter element frame-707, a glass fiber filter-708, a water filtering hole-709, a multifunctional filter-710, a white steel wire mesh primary filter-711, a waterproof baffle-712, a filter element partition-713, a wind wheel-714, a water leakage port-715, a top plate-716, a front cover plate-717 and a side strip-718.

The invention is described in further detail below with reference to examples and the accompanying drawings of the specification:

Detailed Description

Examples

As shown in fig. 1 to 16, a central fresh air purification system for cooling and heating is composed of a cold heat exchanger 1, a control device 2, an air distribution device 3, a control panel 4, an air inlet duct 5, a lead wire 6, an external purification unit 7, an external air conditioner unit 8, an air supply duct 9, and an air supply branch duct 10, wherein the cold heat exchanger 1 is arranged on the external purification unit 7, the left side of the cold heat exchanger is connected with the air supply duct 9 through a flange 11, and the right side of the cold heat exchanger is connected with the external air conditioner unit 8 through a copper pipe. The control device 2 is placed indoors and connected with a control panel 4 arranged on a wall through a wire, and the whole purification system is centrally controlled. The control panel can be controlled manually, remotely or by network signals, and the control device 2 is respectively connected with a power supply, the cold-heat exchanger 1, the purification external unit 7 and the air conditioner external unit 8 through leads 6. The air separation device 3 is arranged on an indoor wall or in an indoor ceiling, one end of the air separation device is provided with an air separation port 31 which is hermetically connected with the air supply pipeline 9, and the front vertical surface and the rear vertical surface are respectively provided with two air supply branch pipes 10. And an S-shaped elbow can be added according to room requirements to carry out multi-path air supply so as to increase an air outlet branch, so that the requirement of heating, refrigerating and purifying fresh air for multiple rooms can be met, and central control is realized. The purifying outer unit 7: the air inlet pipe 5 is arranged at the lower part of the cold-heat exchanger 1, and the left side of the air inlet pipe is connected with the cold-heat exchanger 1 through a flange plate 11.

As shown in fig. 1 to 16, further, the heat exchanger 1 includes a top cover 101, a heating pipe 108, a heat exchanger shell 109, a low pressure pipe 110, a low pressure expansion angle valve 111, a high pressure expansion angle valve 112, silencing cotton 113, a high pressure pipe 114, a silencing plate 115, a partition plate 117, a cooling pipe 119, a cooling thermostat 120, a heating thermostat 121, and an induction head 122, a cold-heat exchanger shell 109 is provided outside the cold-heat exchanger 1, a top cover 101 is provided on the upper portion, a low pressure expansion angle valve 111 and a high pressure expansion angle valve 112 are provided at the right side of the cold heat exchanger 1, the refrigeration tubes 119 are arranged according to holes of the refrigeration support 118, penetrate through the holes in the refrigeration support 118 and are fixed on the refrigeration support 118, the refrigeration supports 118 are symmetrically arranged into 2 pairs, the middle parts of the refrigeration supports are connected through a transverse bar, and the bottom parts of the refrigeration supports are provided with inserting plates 1181 which are inserted and fixed in clamping grooves at the bottom of the inner side of the heat exchanger 1. The first vertical row on refrigeration support 118 sets up 8 apertures, and the second vertical row sets up 2 apertures, is equipped with a macropore in the middle of two rows, and this kind of arrangement has increased the area that new trend passes through, increases the new trend throughput. The left side of the cold-heat exchanger shell 109 is provided with two holes 123, the inner wall of the left side of the cold-heat exchanger shell 109 is provided with a partition plate 117, the partition plate 117 is provided with a heating temperature controller 121, the front, the back, the right side and the top cover 101 of the inner wall of the cold-heat exchanger shell 109 are respectively provided with a silencing plate 115, the inner side of the silencing plate 115 is provided with silencing cotton 113, and the silencing plate 115 is provided with a plurality of long holes.

As shown in fig. 1 to 16, one side of the heating thermostat 121 is connected to an induction head 122 through a sensing wire 124, the induction head 122 is inserted into a hole 123, and the heating thermostat 121 is connected to the control device 2 and the heating pipe 108 through a conducting wire 6. The two ends of the heating pipe 108 and the middle part of the heating pipe 108 are fixed in the cold-heat exchanger 1 through a heating bracket 126 arranged on a partition plate 117, and the heating pipe 108 is provided with a radiating fin 116 to increase the radiating area.

As shown in fig. 1 to 16, further, a cooling fin 116 is disposed on the cooling pipe 119 to increase a cooling area, the cooling pipe 119 is connected to a low pressure pipe 110, a high pressure pipe 114, and a cooling thermostat 120, the low pressure pipe 110 is connected to a low pressure expansion angle valve 111, one end of the high pressure pipe 114 is disposed with a filter 125, and the high pressure pipe 114 is connected to a high pressure expansion angle valve 112.

As shown in fig. 1 to 16, further, the refrigeration thermostat 120 is connected to an induction head 122 through a sensing wire 124, the induction head 122 is inserted into a hole 123, and the refrigeration thermostat 120 is respectively connected to the control device 2 through a conducting wire 6.

As shown in fig. 1 to 16, the controller 2 is connected to the heating temperature controller 121, the cooling temperature controller 120, the outdoor unit 8 and the motor inside the outdoor unit 7 in the heat exchanger 1 through the wires 6.

As shown in fig. 1 to 16, the purifying outdoor unit 7 is composed of a purifying casing 701, an air outlet 706, a filter element frame 707, a glass fiber filter 708, a water filtering hole 709, a multifunctional filter 710, a white steel wire mesh primary filter 711, a waterproof baffle 712, and a filter element partition 713, wherein a front cover 717 is arranged at the front end of the purifying casing 701, a plurality of strip holes are arranged on the front cover 717, a top plate 716 is arranged at the upper end of the purifying casing 701, a rear cover 703 is arranged at the rear end of the purifying casing 701, a bottom plate is arranged at the lower end of the purifying casing 701, a water leaking hole 715 is arranged on the bottom plate, the filter element frame 707 is arranged at the middle part of the purifying casing 701, the filter element partition 713 is arranged in the filter element frame 707, the glass fiber filter 708 and the multifunctional filter 710 are sequentially arranged at the front end of the filter element frame 707, The multifunctional filter 710 comprises bamboo carbon, volatile carbon and HEPA (HEPA), the thickness of the multifunctional filter is 9cm, the structure of the purifying outdoor unit is simplified by adopting the filtering structure, the replacement frequency of filtering materials is reduced, the service life can reach 3 years, the structure reduces wind resistance, the fresh air throughput is increased, and the peculiar smell removing effect is achieved, a short partition plate is arranged at the front end of the multifunctional filter 710 and is fixedly arranged in a purifier shell 701, a white steel wire mesh primary filter 711 and a waterproof baffle 712 are sequentially arranged at the front end of the short partition plate, the white steel wire mesh primary filter 711 is made of 304 white steel wire meshes and is pressed into a wave shape, and the filtering area is increased; and can be cleaned, and the replacement period is prolonged. The rear end of the filter element frame 707 is provided with a turbine cover 702, the turbine cover 702 is made of a double-layer white steel plate filled with foaming agent in the middle, the filter element frame 707 and the rear plate 704 are fixed through a short beam, the short beam is provided with a mounting hole 705, a wind wheel 714 is arranged in the turbine cover 702, a plurality of side strips 723 are arranged around the wind wheel 714, a one-way three-speed motor is arranged in the wind wheel 714, the rear end of the turbine cover 702 is provided with the rear plate 704, the bottom of the turbine cover 702 is provided with water filtering holes 709, and when the turbine cover 702 is influenced by cold and hot air, water can be removed in time, and faults. An air outlet 706 is arranged on one side of the turbine cover 702 and connected with an air inlet pipeline 5, and two ends of the air inlet pipeline 5 are bent by 90 degrees.

As shown in fig. 1-16, further, two adjacent surfaces of the filter element frame 707 are folded inwards by 90 degrees, and the filter element frame 707 is fixed by edible glass cement of the aquarium. The rotation number of the unidirectional three-speed motor is 850 revolutions per minute, 650 revolutions per minute and 450 revolutions per minute respectively.

As shown in fig. 1 to 16, the heat exchanger 1, the controller panel 4, the outdoor unit 8, the top cover 101, the heating pipe 108, the heat exchanger housing 109, the low pressure pipe 110, the high pressure pipe 114, the sound-absorbing panel 115, the heat sink 116, the partition 117, the cooling bracket 118, the cooling pipe 119, the induction head 122, the sensing wire 124, the heating bracket 126, the purifier housing 701, the turbine cover 702, the rear cover 703, the rear plate 704, the waterproof baffle 712, the filter partition 713, the top plate 716, the front cover 722, and the bolts are all made of 304 white steel, and the motor in the outdoor unit 7 is connected to a power supply.

As shown in fig. 1-16, further, the system can be arranged outdoors or in a plurality of sets in a machine room.

In the using process, firstly, the cold-heat exchanger 1 is placed on the purifying external machine 7, the cold-heat exchanger 1, the purifying external machine 7 and the air conditioner external machine 8 are placed and fixed outdoors or in a machine room, and the cold-heat exchanger 1 and the purifying external machine 7 are connected with each other through the air inlet pipeline 5; then, the cold-heat exchanger 1 is connected with the air distribution device 4 through the air supply pipeline 9, the air distribution device 3 is installed on a specific suitable position in a room, such as an indoor side wall or an indoor ceiling, the processed fresh air can be conveyed to each position or each room in the room through the air supply branch pipe 10, and the installation position can be adjusted in time according to the requirements of indoor decoration and decoration; then, a refrigeration temperature controller 120, a heating temperature controller 121 and a motor in the purifying outdoor unit 7 in the cold-heat exchanger 1 are connected with the controller 2 through wires, the refrigeration temperature controller 120 is connected with a refrigeration pipe 119 through a wire and is connected with an air conditioner outdoor unit 8 through a copper pipe, the control device 2 and the control panel 4 can be installed indoors, and the installation position can be adjusted timely according to the requirements of indoor decoration and decoration; finally, the power supply is switched on, the control panel 4 can be started manually, and can also be controlled remotely or controlled by a mobile phone or a computer network; meanwhile, before the product leaves the factory, the temperature controller is set to a set temperature,

secondly, the outdoor air is purified by the purifying external machine 7 and then enters the cold-heat exchanger 1 through the air inlet pipeline 5, the purified air is heated or cooled in the cold-heat exchanger 1 and then is continuously conveyed into the indoor space through the air supply pipeline 9, the air distribution device 3 and the air supply branch pipe 10, not only is fresh air supplied, but also the indoor air pressure is larger than the outdoor air pressure, and indoor formaldehyde is discharged from gaps such as doors and windows through the air pressure. The heating temperature in the cold-heat exchanger 1 can reach 50-60 ℃, the refrigerating temperature in the cold-heat exchanger 1 can reach 15-18 ℃, and clean and fresh air with positive pressure and proper temperature can be provided for a room at any time for seasonal climate change.

It should be noted that: the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention. Therefore, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A central fresh air purification system for cooling and heating, comprising a cooling and heat exchanger (1), a control device (2), an air distribution device (3), a control panel (4), an air inlet duct (5), a wire ( 6), purifying the outer unit (7), the air conditioner outer unit (8), the air supply duct (9), the air supply branch pipe (10) to form, it is characterized in that:

A cold heat exchanger (1): arranged on the purification external unit (7), the left side is connected to the air supply duct (9) through the flange (11), and the right side is connected to the air conditioner external unit (8) through a copper pipe ;

A control device (2): placed indoors, connected to a control panel (4) arranged on the wall through wires, the control device (2) is connected to the power supply, the cooling and heat exchanger (1), The purification outdoor unit (7) and the air conditioner outdoor unit (8) are connected;

An air distribution device (3): installed on the indoor wall or in the indoor ceiling, one end is provided with an air distribution port (31) to be sealed with the air supply duct (9), and two air supply pipes are respectively provided on the front and rear facades. branch pipe (10);

A purifying outdoor unit (7): arranged at the lower part of the cold heat exchanger (1), with an air inlet pipe (5) on the left side connected to the cold heat exchanger (1) through a flange (11).

2. A central fresh air purification system for cooling and heating according to claim 1, characterized in that: the cold heat exchanger (1) comprises: a top cover (101), a heating pipe (108), a cold and heat exchange housing (109), low pressure pipe (110), low pressure expansion angle valve (111), high pressure expansion angle valve (112), muffler cotton (113), high pressure pipe (114), muffler plate (115), baffle ( 117), a refrigeration pipe (119), a refrigeration thermostat (120), a heating thermostat (121), and an induction head (122), and a cold heat exchanger (1) is provided outside the cold heat exchanger (1). The casing (109) is provided with a top cover (101) on the upper part, a low-pressure expansion angle valve (111) and a high-pressure expansion angle valve (112) are provided on the right side of the cold heat exchanger (1), and the refrigeration pipe (119) Arrange according to the holes of the refrigeration bracket (118), pass through the holes on the refrigeration bracket (118) to be fixed on the refrigeration bracket (118), and the bottom of the refrigeration bracket (118) is provided with a plug plate (1181) that is inserted into the heat exchanger (118). 1) Inside the slot at the bottom of the inner side; two holes (123) are provided on the left side of the cold heat exchanger shell (109), and a partition plate is provided on the left inner wall of the cold heat exchanger shell (109). (117), the partition plate (117) is provided with a heating thermostat (121), and the front, rear, right side and top cover (101) of the inner wall of the cold heat exchanger shell (109) are provided with mufflers (115), the muffler plate (115) is provided with muffler cotton (113) inside, and the muffler plate (115) is provided with a number of elongated holes.

3. The central fresh air purification system for cooling and heating according to claim 2, characterized in that: one side of the heating thermostat (121) is connected to the sensing head (122) through a sensing wire (124) connection, the induction head (122) is inserted into the hole (123), the heating thermostat (121) is connected with the control device (2) and the heating pipe (108) through the wire (6) respectively; the heating pipe ( 108) both ends and the middle of the heating pipe (108) are fixed in the cold heat exchanger (1) by heating brackets (126) arranged on the partition plate (117), and the heating pipes (108) are provided with cooling fins (116), increasing the heat dissipation area.

4. A central fresh air purification system for cooling and heating according to claim 2, characterized in that: the cooling pipes (119) are provided with cooling fins (116) to increase the cooling area, and the cooling pipes (119) ) is connected with the low-pressure pipe (110), the high-pressure pipe (114) and the refrigeration thermostat (120), the low-pressure pipe (110) is connected with the low-pressure expansion angle valve (111), and one end of the high-pressure pipe (114) is provided with a filter (125), the high pressure pipe (114) is connected with the high pressure expansion angle valve (112).

5. The central fresh air purification system for cooling and heating according to claim 2, characterized in that: the cooling thermostat (120) is connected to the sensing head (122) through a sensing wire (124), and sensing The head (122) is inserted into the hole (123), and the refrigeration thermostat (120) is respectively connected with the control device (2) through the wire (6).

6. A central fresh air purification system for cooling and heating according to claim 1, 2, characterized in that: the control device (2) is respectively connected with the control device in the cooling heat exchanger (1) through the wire (6). The heating thermostat (121), the refrigeration thermostat (120), the air conditioner outdoor unit (8), and the motors in the purification outdoor unit (7) are connected to each other.

7. A central fresh air purification system for cooling and heating according to claim 1, characterized in that: the purification external machine (7) consists of a purification machine shell (701), an air outlet (706), a filter element frame (707) ), glass fiber filter (708), water filter hole (709), multi-function filter (710), white steel mesh primary filter (711), waterproof baffle (712), filter element separator (713) , is characterized in that: the front end of the purifier shell (701) is provided with a front cover plate (717), the front cover plate (717) is provided with a number of elongated holes, and the upper end of the purifier shell (701) is provided with a top plate (716), purifying The rear end of the casing (701) is provided with a rear cover (703), the lower end of the casing (701) is provided with a bottom plate, a water leakage port (715) is arranged on the bottom plate, and a filter element frame ( 707), the filter element frame (707) is provided with a filter element partition plate (713), and the front end of the filter element frame (707) is sequentially provided with a glass fiber filter (708) and a multi-functional filter (710). 710) The front end is provided with a short baffle, the short baffle is fixedly installed in the purifier casing (701), and the front end of the short baffle is sequentially provided with a steel mesh primary filter (711), a waterproof baffle (712), a filter element frame ( 707) The rear end is provided with a turbine cover (702), the turbine cover (702) is made of a double-layer white steel plate filled with a foaming agent in the middle, and the filter element frame (707) and the rear plate (704) are fixed by a short beam, A mounting hole (705) is arranged on the short beam, a wind wheel (714) is arranged in the turbine cover (702), a plurality of side bars (723) are arranged around the wind wheel (714), and a one-way is arranged in the wind wheel (714) Three-speed motor, a rear plate (704) is arranged at the rear end of the turbine cover (702), a water filter hole (709) is arranged at the bottom of the turbine cover (702), and an air outlet (706) and an air inlet are arranged on one side of the turbine cover (702). The pipes (5) are connected with each other, and both ends of the air inlet pipe (5) are bent at 90°.

8. The central fresh air purification system for cooling and heating according to claim 7, characterized in that: the two adjacent surfaces of the filter element frame (707) are folded inwards by 90°, and the filter element frame (707) is eaten through an aquarium tube Glass glue fixed. The one-way three-speed motor has a rotational speed of 850 rpm, 650 rpm, and 450 rpm, respectively.

9. A central fresh air purification system for cooling and heating according to claim 2, 7, characterized in that: the cold heat exchanger (1), the controller panel (4), the air conditioner external unit (8), Top cover (101), heating pipe (108), cooling and heat exchanger shell (109), low pressure pipe (110), high pressure pipe (114), muffler plate (115), heat sink (116), partition plate (117) ), cooling bracket (118), cooling pipe (119), sensing head (122), sensing wire (124), heating bracket (126), purifier housing (701), turbine cover (702), rear cover (703), the rear plate (704), the waterproof baffle (712), the filter element partition plate (713), the top plate (716), the front cover plate (722), and the bolts are all made of 304 white steel material. The motor in the external unit (7) is connected to the power supply.

10 . The central fresh air purification system for cooling and heating according to claim 1 , wherein the system can be installed outdoors, or multiple sets can be centrally installed in a computer room. 11 .