Dual-system air conditioner

Abstract

According to the dual-system air conditioner, an indoor unit is provided with an air outlet cavity, an axial flow fan and a first heat exchange coil pipe are arranged in the air outlet cavity, and a second heat exchange coil pipe and a heat exchange fan are arranged in an outdoor unit; a first air inlet and a second air inlet are formed in the air outlet cavity, the second air inlet communicates with a filtering cavity, a third air inlet is formed in the filtering cavity, a filtering assembly is detachably arranged in the filtering cavity and located between the second air inlet and the third air inlet, and an air outlet is formed in the air outlet cavity; when indoor air is subjected to heat exchange, the first air inlet and the air outlet are opened, and the third air inlet is closed, and when indoor air is purified, the third air inlet is opened, and the first air inlet is closed. When heat exchange and air purification of indoor air need to be conducted synchronously, the first air inlet, the air outlet and the third air inlet are opened synchronously so that heat exchange or purification of the indoor environment can be achieved, a heat exchange system and a purification system do not need to be arranged independently, and the use cost is fully saved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to a dual-system air conditioner. Background Art

[0002] In a method known to the inventor, an all-in-one air purifier that integrates air conditioning and air purification functions is one of the main development directions of air conditioners. The all-in-one air purifiers on the market mainly add an air purification module at the air inlet of the air conditioner. However, in this way, the air purification module covers the entire air inlet, which will affect the air volume of the air conditioner and reduce the cooling and heating efficiency of the air conditioner. Summary of the invention

[0003] The object of the present invention is to provide a dual-system air conditioner to solve the problems existing in the prior art, so as to realize heat exchange or purification of the indoor environment without the need to set up a separate heat exchange system and purification system, so as to fully save the use cost.

[0004] To achieve the above object, the present invention provides the following solution: The present invention provides a dual-system air conditioner, comprising an indoor unit and an outdoor unit;

[0005] The indoor unit is provided with an air outlet cavity, in which an axial flow fan for unidirectional air flow along the air outlet cavity and a first heat exchange coil located at the air outlet side of the axial flow fan are provided, and the axial flow fan is provided with at least one; the outdoor unit is provided with a second heat exchange coil and a heat exchange fan for heat exchange with the second heat exchange coil, and a heat exchange medium is circulated and connected between the second heat exchange coil and the first heat exchange coil;

[0006] The air outlet cavity is provided with a first air inlet and a second air inlet both located on the air inlet side of the axial flow fan, the second air inlet is connected with a filter cavity, a third air inlet is provided on the filter cavity, a filter assembly for purifying air is detachably provided in the filter cavity, the filter assembly is located between the second air inlet and the third air inlet, and the air outlet cavity is provided with an air outlet located on the air outlet side of the first heat exchange coil;

[0007] The air outlet, the first air inlet and the third air inlet are all connected to the indoor environment; when the indoor air is exchanged with heat, the first air inlet and the air outlet are opened, and the third air inlet is closed; when the indoor air is purified, the third air inlet is opened and the first air inlet is closed; when the indoor air needs to be heat exchanged and purified simultaneously, the first air inlet, the air outlet and the third air inlet are opened simultaneously.

[0008] Preferably, the filter assembly comprises an activated carbon filter, an adsorption chamber and a photocatalyst filter arranged in sequence along the air intake direction;

[0009] The structure of the activated carbon filter screen matches the flow cross section of the filter cavity;

[0010] An air inlet is provided on a side of the adsorption chamber close to the activated carbon, an air outlet is provided on a side of the adsorption chamber close to the decomposition net, and the adsorption chamber is filled with molecular sieve or diatom mud;

[0011] The structure of the photocatalyst filter is matched with the flow interface of the filter cavity, and light sources for activating photocatalysts are arranged on both sides of the photocatalyst filter along the air flow direction, and the light sources are installed on the inner wall of the filter cavity.

[0012] Preferably, a water inlet for filling water into the adsorption chamber is provided at the top of the adsorption chamber, and a water outlet is provided at the bottom of the adsorption chamber;

[0013] The air inlet and the air outlet are both opened at the top position of the adsorption chamber, the air inlet is connected with an air inlet channel located in the adsorption chamber, and the air inlet channel is provided with an air outlet located at the bottom position of the adsorption chamber.

[0014] Preferably, a window for displaying the liquid level inside the adsorption chamber is provided on the side wall of the adsorption chamber, the window extends in a vertical direction, and a transparent plate is covered on the window.

[0015] Preferably, the portion of the air outlet cavity from the axial flow fan to the first heat exchange coil has a conical structure, and its flow cross section gradually increases along the air outlet direction, and the structure of the first heat exchange coil matches the structure of the flow cross section of the corresponding air outlet cavity.

[0016] Preferably, a plurality of axial flow fans are provided in the air outlet cavity, and the axial flow fans are arranged in sequence perpendicular to the air outlet direction and located in the same straight line direction, and the first heat exchange coil extends along the arrangement direction of the axial flow fans.

[0017] Preferably, the air outlet, the first air inlet and the third air inlet are all provided with electric-controlled valves for opening and closing them.

[0018] Preferably, the electrically controlled valve comprises flap valves respectively installed at the air outlet, the first air inlet and the third air inlet, and each flap valve is equipped with a driving motor for driving it to rotate and open and close.

[0019] Preferably, the air outlet is connected to a first air guide channel, the outlet of the first air guide channel is connected in parallel with a plurality of first channel branches, and each of the first channels is provided with a channel outlet;

[0020] The first air inlet and the third air inlet are connected to a second air guide channel, the inlet of the second air guide channel is connected in parallel with a plurality of second channel branches, and each of the second channel branches is provided with a channel inlet;

[0021] The channel outlet and the channel inlet are spaced apart from each other.

[0022] Preferably, a mounting opening is provided on the side wall of the second air guiding channel corresponding to the first air inlet, and a pull-out filter is slidably installed in the mounting opening, and the pull-out filter extends in a direction perpendicular to the air inlet.

[0023] Compared with the prior art, the present invention has achieved the following technical effects:

[0024] When the indoor air is heat exchanged, the first air inlet and the air outlet are opened, and the third air inlet is closed, and the first heat exchange coil and the second heat exchange coil are started to work; when the indoor air is purified, the third air inlet and the air outlet are opened, and the first air inlet is closed, and the first heat exchange coil and the second heat exchange coil stop working; when the indoor air needs to be heat exchanged and purified simultaneously, the first air inlet, the air outlet and the third air inlet are opened synchronously, and the first heat exchange coil and the second heat exchange coil are started to work; on the one hand, when the first air inlet and the third air inlet are switched on, the indoor environment is heat exchanged or purified separately, and on the other hand, the first air inlet and the third air inlet are opened synchronously, so that the indoor environment is purified synchronously in the process of heat exchange, and the air volume of the heat exchange is not affected. Regardless of heat exchange or purification of the indoor environment, they share the same axial flow fan and air outlet, and there is no need to set up a heat exchange system and a purification system separately, so as to fully save the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 This is a schematic diagram of the overall structure of an indoor unit in one embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the filter cavity structure in one embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the air outlet in one embodiment of the present invention;

[0029] Among them, 1-air outlet, 2-air outlet cavity, 3-axial flow fan, 4-first air inlet, 5-filter cavity, 6-third air inlet, 7-channel inlet, 8-second air guide channel, 9-activated carbon filter, 10-photocatalyst filter, 11-light source, 12-drain outlet, 13-water inlet, 14-air outlet, 15-air inlet channel, 16-first heat exchange coil. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The object of the present invention is to provide a dual-system air conditioner to solve the problems existing in the prior art, so as to realize heat exchange or purification of the indoor environment without the need to set up a separate heat exchange system and purification system, so as to fully save the use cost.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 3As shown, the present embodiment provides a dual-system air conditioner, including an indoor unit and an outdoor unit; the indoor unit is provided with an air outlet cavity 2, the air outlet cavity 2 is provided with an axial flow fan 3 for air to flow unidirectionally along the air outlet cavity 2, and a first heat exchange coil 16 located on the air outlet side of the axial flow fan 3. When working, the axial flow fan 3 guides air and passes through the gap of the first heat exchange coil 16 to deliver the air after heat exchange with the first heat exchange coil 16, and the axial flow fan 3 is provided with at least one; the outdoor unit is provided with a second heat exchange coil and a heat exchange fan for heat exchange with the second heat exchange coil, and a heat exchange medium is circulated and connected between the second heat exchange coil and the first heat exchange coil 16, that is, the present invention uses the first heat exchange coil 16 and the second heat exchange coil The air conditioning heat exchange system is based on the air conditioning heat exchange principle in the prior art. When cooling is required, the heat exchange medium evaporates and absorbs heat in the first heat exchange coil 16. When heating is required, the heat exchange medium condenses and dissipates heat in the first heat exchange coil 16. The air outlet cavity 2 is provided with a first air inlet 4 and a second air inlet, both of which are located on the air inlet side of the axial flow fan 3. The second air inlet is connected to a filter cavity 5. A third air inlet 6 is provided on the filter cavity 5. A filter assembly for purifying air is detachably provided in the filter cavity 5. The filter assembly is located between the second air inlet and the third air inlet 6. The air outlet cavity 2 is provided with an air outlet 1 located on the air outlet side of the first heat exchange coil 16. The air outlet 1, the first air inlet The air vents and the third air inlet 6 are both connected to the indoor environment; when the indoor air is exchanged with heat, the first air inlet and the air outlet 1 are opened, and the third air inlet 6 is closed, at which time the first heat exchange coil 16 and the second heat exchange coil are started to work; when the indoor air is purified, the third air inlet 6 and the air outlet 1 are opened, and the first air inlet is closed, at which time the first heat exchange coil 16 and the second heat exchange coil stop working; when it is necessary to heat exchange and purify the indoor air simultaneously, the first air inlet, the air outlet 1 and the third air inlet 6 are opened simultaneously, at which time the first heat exchange coil 16 and the second heat exchange coil are started to work; on the one hand, when the indoor air is exchanged with heat by switching between the first air inlet and the third air inlet 6, the indoor air is purified separately. For heat exchange or purification of the indoor environment, on the other hand, the first air inlet and the third air inlet 6 are opened synchronously, so as to purify the indoor environment simultaneously during the process of heat exchange with the indoor environment, and the air volume of the heat exchange will not be affected. Regardless of heat exchange with the indoor environment or purification of the indoor environment, the same axial flow fan 3 and air outlet 1 are shared, and there is no need to set up a heat exchange system and a purification system separately, so as to fully save the use cost. Preferably, the air intake of the third air inlet 6 accounts for about 30% of the air intake of the first air inlet, so that after the first air inlet and the air outlet 1 complete the overall heat exchange cycle of the indoor air about three times, the third air inlet 6 and the air outlet 1 complete one purification cycle of the indoor air.

[0034] In a specific embodiment, the filter assembly includes an activated carbon filter 9, an adsorption chamber and a photocatalyst filter 10 which are arranged in sequence along the air intake direction; the structure of the activated carbon filter 9 matches the flow cross-section of the filter cavity 5, and the large particles of impurities in the air are intercepted by the activated carbon filter 9 to complete the preliminary purification of the air; an air inlet is provided on the side of the adsorption chamber close to the activated carbon, and an air outlet 14 is provided on the side of the adsorption chamber close to the decomposition net, and the adsorption chamber is filled with molecular sieves or diatom mud, and the molecular sieves or diatom mud in the adsorption chamber are used to further purify the air to adsorb small particles of impurities; the structure of the photocatalyst filter 10 matches the flow interface of the filter cavity 5, and both sides of the photocatalyst filter 10 along the air flow direction are provided with light sources 11 for activating photocatalysts, and the light source 11 is installed on the inner wall of the filter cavity 5 to achieve the decomposition of harmful gases in the room through the photocatalyst filter 10, and complete the deep purification of the indoor air. Preferably, the light source 11 uses an ultraviolet lamp.

[0035] In a specific embodiment, a water injection port 13 for filling water into the adsorption chamber is provided at the top of the adsorption chamber, and a drain port 12 is provided at the bottom of the adsorption chamber, so that water is injected into the adsorption chamber through the water injection port 13, so that the molecular sieve and diatom mud are in a water environment, ensuring their adsorption capacity for impurities. Preferably, the water injection port 13 and the drain port 12 are connected to the upper and lower water pipes in the room to realize the water injection and drainage work in the adsorption chamber; the air inlet and the air outlet 14 are both provided at the top position of the adsorption chamber, and the air inlet is connected to the air inlet channel 15 located in the adsorption chamber, and the air inlet channel 15 is provided with an air outlet located at the bottom position of the adsorption chamber, so that the air enters the air inlet channel 15 through the air inlet and overflows from the bottom of the adsorption chamber, so that the air flows from the bottom of the adsorption chamber to the top of the adsorption chamber, and then is discharged through the air outlet, so as to improve the air purification effect.

[0036] In a specific embodiment, a window for displaying the internal liquid level is provided on the side wall of the adsorption chamber. The window extends in a vertical direction and is covered with a transparent plate to cover the window to prevent water from seeping through the window. The amount of water in the adsorption chamber can be observed through the window, and the amount of water in the adsorption chamber can be adjusted through the water inlet 13 and the drain outlet 12.

[0037] In a specific embodiment, the portion of the air outlet cavity 2 from the axial fan 3 to the first heat exchange coil 16 is of a conical structure, and its flow cross-section gradually increases along the air outlet direction, and the structure of the first heat exchange coil 16 matches the structure of the flow cross-section of the corresponding air outlet cavity 2, ensuring that sufficient space is reserved in the air outlet cavity 2 to accommodate the first heat exchange coil 16 of the corresponding structure, and the structure of the first heat exchange coil 16 can be expanded accordingly, thereby improving the heat exchange efficiency, and through the structural change of the air outlet cavity 2, the air flow cross-section gradually becomes larger, and then in the process of air outlet, the air circulation speed gradually slows down, then even if the first air inlet and the third air inlet 6 are opened simultaneously, and the speed of the axial fan 3 increases, the air outflow speed can be limited through the guidance of the conical structure of the air outlet cavity 2, avoiding the air speed after heat exchange being too fast, causing discomfort to the human body.

[0038] In a specific embodiment, a plurality of axial flow fans 3 are provided in the air outlet cavity 2, and the axial flow fans 3 are arranged in sequence perpendicular to the air outlet direction and located in the same straight line direction. The first heat exchange coil 16 extends along the arrangement direction of the axial flow fans 3. By providing a plurality of axial flow fans 3, the air outlet volume of the entire air outlet cavity 2 is increased, and the structure of the first heat exchange coil 16 is matched with the arrangement of the axial flow fans 3 so as to fully expand the structure of the first heat exchange coil 16 and thereby improve the heat exchange efficiency.

[0039] In a specific embodiment, the air outlet 1, the first air inlet and the third air inlet 6 are all provided with electric control valves for opening and closing, and then the electric control valves are used to realize the electric control opening and closing of the air outlet 1, the first air inlet and the third air inlet 6, so as to facilitate the subsequent switching and adjustment of modes by remote control, etc. Preferably, the electric control valves include flap valves respectively installed at the air outlet 1, the first air inlet and the third air inlet 6, and each flap valve is equipped with a driving motor for driving it to rotate and open, so that the flap valve is driven and controlled by the driving motor to complete the opening and closing of the air outlet 1, the first air inlet and the third air inlet 6.

[0040] In a specific embodiment, the air outlet 1 is connected to a first air guiding channel, the outlet of the first air guiding channel is connected to a plurality of first channel branches in parallel, and each first channel is provided with a channel outlet; the first air inlet and the third air inlet 6 are connected to a second air guiding channel 8, the inlet of the second air guiding channel 8 is connected to a plurality of second channel branches in parallel, and each second channel branch is provided with a channel inlet 7. Then, in the specific installation process, the channel outlet and the channel inlet 7 are respectively installed in corresponding rooms, or in the same area, so that the channel outlet and the channel inlet 7 can be evenly distributed in the entire area; the channel outlet and the channel inlet 7 are distributed at intervals to avoid the air flowing out through the channel outlet from flowing back to the channel inlet 7 without diffusion, thereby affecting the efficiency of heat exchange and purification of the entire indoor environment.

[0041] In a specific embodiment, an installation opening is opened on the side wall of the second air guide channel 8 corresponding to the first air inlet, and a pull-out filter is slidably installed in the installation opening. The pull-out filter extends in a direction perpendicular to the incoming air. The pull-out filter is installed at the installation opening to filter the incoming air to achieve air purification during the heat exchange process. The pull-out filter is slidably installed so that the pull-out filter can be regularly removed for cleaning to avoid affecting the air output.

[0042] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0043] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0044] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A dual-system air conditioner, characterized in that: Includes indoor and outdoor units; The indoor unit is provided with an air outlet cavity, in which an axial flow fan for unidirectional air flow along the air outlet cavity and a first heat exchange coil located at the air outlet side of the axial flow fan are provided, and the axial flow fan is provided with at least one; the outdoor unit is provided with a second heat exchange coil and a heat exchange fan for heat exchange with the second heat exchange coil, and a heat exchange medium is circulated and connected between the second heat exchange coil and the first heat exchange coil; The air outlet cavity is provided with a first air inlet and a second air inlet both located on the air inlet side of the axial flow fan, the second air inlet is connected with a filter cavity, a third air inlet is provided on the filter cavity, a filter assembly for purifying air is detachably provided in the filter cavity, the filter assembly is located between the second air inlet and the third air inlet, and the air outlet cavity is provided with an air outlet located on the air outlet side of the first heat exchange coil; The air outlet, the first air inlet and the third air inlet are all connected to the indoor environment; when the indoor air is exchanged with heat, the first air inlet and the air outlet are opened, and the third air inlet is closed; when the indoor air is purified, the third air inlet is opened and the first air inlet is closed; when the indoor air needs to be heat exchanged and purified simultaneously, the first air inlet, the air outlet and the third air inlet are opened simultaneously.

2. The dual system air conditioner according to claim 1, characterized in that: The filter assembly comprises an activated carbon filter, an adsorption chamber and a photocatalyst filter arranged in sequence along the air intake direction; The structure of the activated carbon filter screen matches the flow cross section of the filter cavity; An air inlet is provided on a side of the adsorption chamber close to the activated carbon, an air outlet is provided on a side of the adsorption chamber close to the decomposition net, and the adsorption chamber is filled with molecular sieve or diatom mud; The structure of the photocatalyst filter is matched with the flow interface of the filter cavity, and light sources for activating photocatalysts are arranged on both sides of the photocatalyst filter along the air flow direction, and the light sources are installed on the inner wall of the filter cavity.

3. The dual system air conditioner according to claim 2, characterized in that: The top of the adsorption chamber is provided with a water inlet for filling water into the interior thereof, and the bottom of the adsorption chamber is provided with a drainage outlet; The air inlet and the air outlet are both opened at the top position of the adsorption chamber, the air inlet is connected with an air inlet channel located in the adsorption chamber, and the air inlet channel is provided with an air outlet located at the bottom position of the adsorption chamber.

4. The dual system air conditioner according to claim 3, characterized in that: A window for displaying the internal liquid level of the adsorption chamber is provided on the side wall of the adsorption chamber. The window extends in a vertical direction and is covered with a transparent plate.

5. The dual-system air conditioner according to any one of claims 2 to 4, characterized in that: The portion of the air outlet cavity from the axial flow fan to the first heat exchange coil is a conical structure, and its flow cross section gradually increases along the air outlet direction, and the structure of the first heat exchange coil matches the structure of the flow cross section of the air outlet cavity.

6. The dual system air conditioner according to claim 5, characterized in that: A plurality of axial flow fans are arranged in the air outlet cavity, and the axial flow fans are arranged in sequence perpendicular to the air outlet direction and located in the same straight line direction. The first heat exchange coil extends along the arrangement direction of the axial flow fans.

7. The dual system air conditioner according to claim 6, characterized in that: The air outlet, the first air inlet and the third air inlet are all provided with electric control valves for opening and closing them.

8. The dual system air conditioner according to claim 7, characterized in that: The electrically controlled valve comprises flap valves respectively installed at the air outlet, the first air inlet and the third air inlet, and each flap valve is equipped with a driving motor for driving it to rotate and open and close.

9. The dual-system air conditioner according to claim 8, characterized in that: The air outlet is connected to a first air guide channel, the outlet of the first air guide channel is connected in parallel with a plurality of first channel branches, and each of the first channels has a channel outlet; The first air inlet and the third air inlet are connected to a second air guide channel, the inlet of the second air guide channel is connected in parallel with a plurality of second channel branches, and each of the second channel branches is provided with a channel inlet; The channel outlet and the channel inlet are spaced apart from each other.

10. The dual system air conditioner according to claim 9, characterized in that: An installation opening is provided on the side wall of the second air guide channel corresponding to the first air inlet, and a pull-out filter is slidably installed in the installation opening. The pull-out filter extends in a direction perpendicular to the air inlet.

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