CN113669789B

CN113669789B - Air conditioner indoor unit and refrigerating system

Info

Publication number: CN113669789B
Application number: CN202010404347.8A
Authority: CN
Inventors: 林晨; 大森宏; 何家基; 江晨钟; 岳宝
Original assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2023-02-28
Anticipated expiration: 2040-05-13
Also published as: CN113669789A

Abstract

The application discloses machine and refrigerating system in air conditioning, wherein machine includes in the air conditioning: the air conditioner comprises a shell, a fan and a fan, wherein an air inlet area and an air outlet area which are opposite to each other in a first direction are formed in the shell, and the shell forms an accommodating cavity; the heat exchanger is arranged in the accommodating cavity, and the projection of the air inlet area along the first direction falls on the heat exchanger; the guide plate is arranged in the accommodating cavity and located between the heat exchanger and the air outlet area, and the projection of the heat exchanger in the first direction falls on the guide plate. The air conditioner can meet the refrigeration requirement under the condition of not needing a fan by relying on the principle that the air density forms natural circulation along with the temperature change, and realizes noiseless and low wind sense. In addition, the guide plate plays a role in guiding and rectifying cold air cooled by the heat exchanger.

Description

Air conditioner indoor unit and refrigerating system

Technical Field

The application relates to the technical field of air conditioners, in particular to an air conditioner indoor unit and a refrigerating system.

Background

At present, indoor units of air conditioners mostly suck indoor return air into an indoor unit through a fan, and then cold air obtained after heat exchange of an evaporator is blown into the indoor unit, so that the wind sensation is obvious, the noise generated by operation of the fan is large, and bad experience is caused for users.

Disclosure of Invention

The application provides an air conditioner indoor unit and a refrigerating system, which aim to solve the problems of obvious wind sensation and large noise of the existing air conditioner indoor unit.

In order to solve the technical problem, the application adopts a technical scheme that: an indoor unit of an air conditioner, comprising: the air conditioner comprises a shell, a fan and a fan, wherein an air inlet area and an air outlet area which are opposite to each other in a first direction are formed in the shell, and the shell forms an accommodating cavity; the heat exchanger is arranged in the accommodating cavity, and the projection of the air inlet area along the first direction falls on the heat exchanger; the guide plate is arranged in the accommodating cavity and located between the heat exchanger and the air outlet area, and the projection of the heat exchanger in the first direction is located on the guide plate.

According to an embodiment of the application, the guide plate comprises a drainage plate and a bending plate, wherein the bending plate extends from the drainage plate to the air outlet area and bends towards the air inlet area; the bent plate forms a water collecting groove, and the drainage plate is inclined in the first direction.

According to an embodiment of the present application, the number of the baffles is one or more, the baffles are arranged at intervals in a second direction, and the first direction is perpendicular to the second direction.

According to an embodiment of the application, a plurality of the drainage plates of guide plate parallel arrangement, it is adjacent the interval between the drainage plate with the casing is in the ratio more than or equal to 0.05, and less than or equal to 1 of the height in first direction.

According to an embodiment of the present application, the housing comprises a front panel and a back panel opposite to each other in the second direction, and the flow guide plate is inclined toward the back panel along a direction from the air inlet area to the air outlet area; in the second direction, the minimum distance from one side of the heat exchanger close to the rear back plate is greater than or equal to the minimum distance from one end of the guide plate close to the air outlet area to the rear back plate; the minimum distance from one end of the guide plate close to the air outlet area to the rear back plate is more than or equal to 5mm.

According to an embodiment of the present disclosure, an inclination angle of the drainage plate with respect to the first direction is 5 ° to 75 °.

According to an embodiment of the present application, the thickness of the drainage plate is 3mm or less.

According to an embodiment of the present application, the bending plate includes a guiding portion and a bending portion, and the guiding portion is connected to the drainage plate; the bending part is connected with the guiding part and bends towards the air inlet area to form the water collecting tank.

According to an embodiment of the application, at least one end of the bottom wall in the water collection tank is inclined towards the air outlet area.

According to an embodiment of the present application, the water collecting tank is arc-shaped, and the ratio of the radius of the water collecting tank to the thickness of the drainage plate is greater than or equal to 0.4 and less than or equal to 3.

According to an embodiment of the present application, a ratio of a height of the guide portion in the first direction to a radius of the water collection tank is 1 or more and 5 or less.

According to an embodiment of the present application, the end of the bending portion, which is not connected to the guiding portion, is bent toward the guiding portion.

According to an embodiment of the application, relative in the bending plate the lateral wall of water catch bowl is formed with the scarf, the scarf with the slope orientation of drainage plate is the same, the scarf is connected to the bottom of bending plate.

According to an embodiment of the present application, the housing includes a front panel and a back panel opposite in the second direction, and a left side panel and a right side panel opposite in a third direction, the first direction, the second direction, and the third direction being perpendicular to each other; the heat exchanger comprises a plurality of heat exchange fins which are arranged in parallel and a plurality of heat exchange tubes which penetrate through the heat exchange fins, and an included angle between the central plane of the heat exchanger and the third direction is less than 10 degrees.

According to an embodiment of the present application, a height of the housing in the first direction is 350mm or less; the ratio of the length of the shell in the third direction to the height of the shell in the first direction is more than or equal to 1 and less than or equal to 8; the ratio of the width of the air inlet area in the second direction to the height of the shell in the first direction is more than or equal to 0.5 and less than or equal to 5; the ratio of the width of the air outlet area in the third direction to the width of the air inlet area in the second direction is greater than or equal to 0.5 and less than or equal to 1.

According to an embodiment of the present application, a ratio of a distance between adjacent heat exchange fins to a width of the heat exchange fins in the second direction is greater than or equal to 0.05 and less than or equal to 0.6; the ratio of the space between the adjacent heat exchange tubes to the space between the adjacent heat exchange fins is more than or equal to 2 and less than or equal to 12.

According to an embodiment of the present application, the method further includes: the filter screen at least covers the air inlet area; the collecting box is communicated with the water collecting tank so as to collect the condensed water discharged by the water collecting tank; the spray head is positioned on one side of the filter screen, which is far away from the air inlet area, and is communicated with the collecting box so as to spray the condensed water on the filter screen, and the condensed water is collected by the water collecting tank after passing through the filter screen; and the water pump is used for pumping the condensed water in the collecting box into the spray head.

According to an embodiment of the present application, the collecting box is opened with a discharge port.

In order to solve the above technical problem, another technical solution adopted by the present application is: a refrigerating system comprises a compressor, a condenser electrically connected with the compressor, a throttling device electrically connected with the condenser and at least one indoor air conditioner, wherein the indoor air conditioner is electrically connected with the throttling device.

According to an embodiment of the present application, the air-conditioning indoor units are provided in plurality, and the plurality of air-conditioning indoor units are connected in parallel; the throttling device is provided with one throttling device to control all the air-conditioning indoor units; or the throttling devices are provided with a plurality of throttling devices and are respectively arranged in one-to-one correspondence with the indoor units of the air conditioners.

According to an embodiment of the application, the refrigeration system further comprises an intermediate heat exchanger electrically connected with the compressor and a water pump electrically connected with the intermediate heat exchanger, and the indoor unit of the air conditioner is provided with one; or the air-conditioning indoor units are provided with a plurality of air-conditioning indoor units, the refrigerating system further comprises a plurality of control valves, and the control valves and the air-conditioning indoor units are arranged in a one-to-one correspondence mode.

The air conditioner can meet the refrigeration requirement under the condition of not needing a fan by relying on the principle that the air density forms natural circulation along with the temperature change, and realizes noiseless and low wind sense. In addition, the guide plate plays a role in guiding and rectifying cold air cooled by the heat exchanger.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a schematic overall structure diagram of an embodiment of an air conditioning indoor unit according to the present application;

fig. 2 is a schematic cross-sectional view illustrating an embodiment of an indoor unit of an air conditioner according to the present application;

fig. 3 is a schematic cross-sectional view illustrating another perspective of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 4 is a partial schematic structural view of a baffle plate of an embodiment of an indoor unit of an air conditioner according to the present application;

fig. 5 is a schematic view of the overall structure of another embodiment of the indoor unit of an air conditioner according to the present application;

FIG. 6 is a schematic block diagram of an embodiment of a refrigeration system of the present application;

FIG. 7 is a schematic block diagram of yet another embodiment of the refrigeration system of the present application;

FIG. 8 is a schematic block diagram of yet another embodiment of a refrigeration system of the present application;

FIG. 9 is a schematic block diagram of yet another embodiment of the refrigeration system of the present application;

fig. 10 is a schematic structural view of yet another embodiment of the refrigeration system of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 4, fig. 1 is a schematic view of an overall structure of an indoor unit of an air conditioner according to an embodiment of the present disclosure; fig. 2 is a schematic cross-sectional view illustrating an air conditioning indoor unit according to an embodiment of the present disclosure; fig. 3 is a schematic cross-sectional view of another perspective of an air conditioning indoor unit according to an embodiment of the present disclosure; fig. 4 is a schematic partial structural view of a baffle plate of an air conditioning indoor unit according to an embodiment of the present application.

An embodiment of the present application provides an indoor unit 100 of an air conditioner, as shown in fig. 1, including a casing 110 and a heat exchanger 120. The housing 110 forms an air inlet area 111 and an air outlet area 112 opposite to each other in the first directionbase:Sub>A-base:Sub>A, the housing 110 forms an accommodating cavity 113, and external air enters from the air inlet area 111 and is discharged from the air outlet area 112 after passing through the accommodating cavity 113. The heat exchanger 120 is disposed in the accommodating cavity 113, andbase:Sub>A projection of the air inlet area 111 along the first directionbase:Sub>A-base:Sub>A falls on the heat exchanger 120, that is, external air entering from the air inlet area 111 is cooled by the heat exchanger 120. The air in the accommodating cavity 113 is cooled by the heat exchanger 120, because the air density is different at different temperatures, the cold air can sink, the hot air can rise, therefore, cooling air flow can be formed in the accommodating cavity 113, at least part of the cooling air flow can sink, and the cooling air flow is discharged from the air outlet area 112, so that the accommodating cavity 113 is in a negative pressure state, the air outside the shell 110 enters the accommodating cavity 113 from the air inlet area 111 under the action of the negative pressure in the accommodating cavity 113, and is continuously cooled by the heat exchanger 120, and cooling air flow is continuously generated. Therefore, the air conditioner can meet the refrigeration requirement without a fan by relying on the principle that the air density changes along with the temperature to form natural circulation, and realizes noiseless and low wind sensation.

In an embodiment, as shown in fig. 1 and fig. 2, the indoor unit 100 of the air conditioner further includesbase:Sub>A baffle 130, the baffle 130 is disposed in the accommodating chamber 113 and located between the heat exchanger 120 and the air-out area 112, andbase:Sub>A projection of the heat exchanger 120 in the first directionbase:Sub>A-base:Sub>A falls on the baffle 130. The guide plate 130 guides the cool air cooled by the heat exchanger 120. For example, when the air conditioning indoor unit 100 is disposed near a wall, the guide plate 130 may guide the cold air toward the wall, and the cold air contacts the wall, sinks to the ground along the wall, and diffuses, so as to prevent the cold air from directly diffusing toward a person, thereby further reducing a wind sensation; and when the air conditioning indoor unit 100 is not disposed near a wall, the guide plate 130 guides the cool air to a direction opposite to that of a person, thereby preventing the cool air from directly flowing toward the direction of the person, reducing a wind sensation, and improving user experience.

In one embodiment, as shown in fig. 2 and 4, the flow guiding plate 130 includes a flow guiding plate 131, and a bending plate 132 extending from the flow guiding plate 131 to the air outlet region 112 and bending toward the air inlet region 111, wherein the bending plate 132 forms a water collecting groove 133. The flow guide plate 131 is inclined with respect to the first directionbase:Sub>A-base:Sub>A to guide the cool air to the air outlet 112 atbase:Sub>A certain inclination angle, and the cool air is discharged from the air outlet 112 in an inclined manner. When the indoor unit 100 of the air conditioner is installed, the indoor unit 100 of the air conditioner may be set to discharge cold air obliquely toward the wall, so that the cold air contacts the wall and sinks to the ground along the wall to be diffused, thereby further reducing the wind sensation.

In order to achievebase:Sub>A better effect of reducing the wind sensation, as shown in fig. 1, 2 and 4, the inclination angle of the flow guide plate 131 with respect to the first directionbase:Sub>A-base:Sub>A is 5 ° to 75 °, for example, 5 °, 25 °, 45 °, 65 °, or 75 °, and the inclination angle of the flow guide plate 131 can be adjusted according to the specific installation position of the air conditioning indoor unit 100, so as to adjust the cool air to be blown to the wall. For example, when the air conditioning indoor unit 100 is located far from the wall, the inclination angle of the drainage plate 131 needs to be set larger in order to condition cool air to be blown toward the wall; when the air conditioning indoor unit 100 is close to the wall, the inclination angle of the drainage plate 131 is set to be smaller, so that the cool air can be conditioned to be blown to the wall, and the air outlet resistance cannot be increased due to the fact that the angle of the cool air blown to the wall is too vertical.

In an embodiment, as shown in fig. 1 and 2, the number of the baffles 130 is one or more, the plurality of baffles 130 are arranged at intervals in the second direction B-B, the planes of the plurality of baffles 130 are arranged in parallel, the first directionbase:Sub>A-base:Sub>A and the second direction B-B are perpendicular to each other, an air duct for passing cold air is formed between adjacent baffles 130, and the plurality of baffles 130 are arranged at intervals to achievebase:Sub>A better rectification effect on the cold air. Generally, the longer side of the housing 110 in the horizontal direction is defined asbase:Sub>A third direction C-C, the shorter side is defined asbase:Sub>A second direction B-B, the third direction C-C is perpendicular to the first directionbase:Sub>A-base:Sub>A and the second direction B-B, respectively, the housing 110 is generally disposed close to the wall with the longer side, and the air guide plate 130 can guide the cool air to the wall. Of course, if the casing 110 is disposed close to the wall at a shorter side in the horizontal direction in the actual installation of the indoor unit 100, the air deflectors 130 may be arranged at intervals in the third direction C-C, so as to guide the cool air to the wall, thereby reducing the wind sensation.

Specifically, as shown in fig. 4, the thickness of the flow guide plate 131 is less than or equal to 3mm, for example, 3mm, 2mm, or 1mm, and the greater the thickness of the flow guide plate 131, the smaller the width of the air duct through which the cooling air passes, so that the thickness of the flow guide plate 131 is set to be less than or equal to 3mm, and the width of the air duct occupied by the flow guide plate 131 is minimized. In the actual production and use process, the drainage plate 131 with a proper thickness can be selected according to the production process and the production cost.

In order to obtainbase:Sub>A good flow straightening effect, as shown in fig. 2 and 4, and to avoid an excessive resistance to the airflow caused by an excessive distance between the flow guide plates 131, in an embodiment,base:Sub>A ratio ofbase:Sub>A distance between adjacent flow guide plates 131 tobase:Sub>A height of the casing 110 in the first directionbase:Sub>A-base:Sub>A is greater than or equal to 0.05, and less than or equal to 1, for example, 0.05, 0.08, or 1, etc. In this range, the flow guide plate 131 can not only provide sufficient rectification effect for the cold air in the housing 110, but also avoid excessive resistance to airflow due to over-density, thereby avoiding the influence on the cooling effect caused by the sinking of the cold air.

In one embodiment, as shown in fig. 1, 2 and 4, the housing 110 includes a front panel 114 and a back panel 115 opposing each other in the second direction B-B. The flow guide plate 131 inclines towards the back plate 115 along the direction from the air inlet area 111 to the air outlet area 112, in the second direction B-B, the minimum distance D1 from the side of the heat exchanger 120 close to the back plate 115 is greater than or equal to the minimum distance D2 from the end of the flow guide plate 130 close to the air outlet area 112 to the back plate 115, and the minimum distance D2 from the flow guide plate 130 to the back plate 115 is greater than or equal to 5mm, so that the air duct distance between the flow guide plate 130 and the back plate 115 is not too narrow to increase the resistance of cold air discharge. In order to prevent the outside air from directly entering the air outlet area 112 without passing through the heat exchanger 120, a corresponding structural block should be arranged in the area of the distance D1 between the heat exchanger 120 and the back plate 115 to prevent the outside air from directly flowing through the area and entering the air outlet area 112.

In one embodiment, as shown in fig. 2 and 4, the water collecting groove 133 formed by the bent plate 132 is used for receiving condensed water condensed by external hot air when encountering cold in the heat exchanger 120, so as to prevent the condensed water from directly dropping from the air outlet region 112.

Further, as shown in fig. 1, 2 and 4, bending plate 132 includes a guide portion 1321 and a bending portion 1322. The guide part 1321 is connected to the flow guide plate 131, and the bent part 1322 is connected to the guide part 1321 and bent toward the wind inlet region 111 to form the water collecting groove 133. In one embodiment, the guiding portion 1321 isbase:Sub>A flat plate structure connected to the flow guide plate 131, and the guiding portion 1321 parallel to the first directionbase:Sub>A-base:Sub>A is disposed to reduce the influence of the bending portion 1322 on the flow guiding effect of the flow guide plate 131, so as to reduce wind resistance. In other embodiments, the central plane of the guiding portion 1321 of the flat plate structure forms an angle with the first direction of 5 ° or less, for example, 5 °, 3 °, or 0 °; alternatively, the guide portions 131 havebase:Sub>A cambered surface structure, and inbase:Sub>A cross section of the guide portions 131 in the first directionbase:Sub>A-base:Sub>A, an included angle betweenbase:Sub>A connection line of two end points of the guide portions 131, which are respectively connected to the flow guide plate 131 and the bent portions 1322, and the first directionbase:Sub>A-base:Sub>A is 5 ° or less, for example, 5 °, 3 °, or 0 °, and the like.

In one embodiment, the bottom wall of the water collecting groove 133 is inclined toward the air outlet area 112 along the direction from the middle to the two sides, so that the height of the middle of the water collecting groove 133 is higher than the height of the two sides, the condensed water collected in the water collecting groove 133 can be discharged from the two sides, and the two sides of the water collecting groove 133 are respectively communicated with the condensed water pipes to discharge the condensed water. In other embodiments, the inner bottom wall of the water collecting tank 133 is inclined toward the air outlet along a direction from one side to one side, so that the condensed water in the water collecting tank 133 is conveniently discharged to one side; alternatively, the height of the bottom wall of the water collecting groove 133 may be inclined from any point to both sides toward the air outlet region 112, so as to facilitate the drainage of the condensed water. In other embodiments, one end of the inner bottom wall of the water collecting tank 133 is inclined toward the air outlet region 112, which also has the effect of facilitating the drainage of the condensed water.

To facilitate drainage of the condensate, the surface of the water collection tank 133 is hydrophilic to facilitate the flow of the condensate to both sides of the water collection tank 133.

Wherein, the water collecting groove 133 is arc-shaped, and the ratio of the radius R of the water collecting groove 133 to the thickness of the drainage plate 131 is greater than or equal to 0.4 and less than or equal to 3, such as 0.4, 1, 2, or 3. The radius of the water collecting groove 133 is about large, and the more the condensed water can be contained, but the larger the radius R of the water collecting groove 133 is, the larger the width of the air channel where the bending part 1322 is located is, and the cold air discharge is affected, so that the ratio of the radius R of the water collecting groove 133 to the thickness of the drainage plate 131 is controlled within the above range, and the optimal balance state between the water containing amount and the volume can be achieved.

Further, as shown in fig. 4, the ratio of the height H of the guide portion 1321 in the first directionbase:Sub>A-base:Sub>A to the radius of the water collecting tank 133 is 1 or more and 5 or less, for example, 1, 3, 5, or the like. So that the area of the guide portion 1321 can reduce its projected area in the flow guiding direction of the flow guiding plate 131 while the water collecting groove 133 provides a sufficient in-groove volume, thereby reducing its obstruction to the discharge of the cool air.

Further, as shown in fig. 4, one end of the bent portion 1322 not connected to the guiding portion 1321 is bent toward the guiding portion 1321, that is, the outer wall of the bent portion 1322 is in a closed state, so as to prevent the condensed water in the water collecting tank 133 from overflowing, and to reduce the obstruction of the bent portion 1322 to the cold air sinking along the drainage plate 131.

In one embodiment, as shown in FIG. 4, chamfered edge 1323 is formed on the outer sidewall of bending plate 132 opposite to water collecting groove 133, chamfered edge 1323 is inclined in the same direction as flow guiding plate 131, and chamfered edge 1323 is connected to the bottom end of bending plate 132 to prevent air flow vortex generated by the shape change of bending plate 132 and reduce disturbance to the air flow.

In one embodiment, as shown in FIG. 1, the housing 110 includes a front panel 114 and a back panel 115 opposite to each other in the second direction B-B, and a left panel 116 and a right panel 117 opposite to each other in the third direction C-C, and the front panel 114, the back panel 115, the left panel 116 and the right panel 117 are enclosed to form a receiving cavity 113. The first directionbase:Sub>A-base:Sub>A, the second direction B-B and the third direction C-C are perpendicular to each other, the heat exchanger 120 includesbase:Sub>A plurality of heat exchange fins 121 arranged in parallel, andbase:Sub>A plurality of heat exchange tubes 122 penetrating through the heat exchange fins 121, and an included angle betweenbase:Sub>A central plane of the heat exchanger 120 and the third direction C-C is less than 10 °, for example, 10 °, 5 ° or 0 °. When the included angle is 0 degree, the plurality of heat exchange fins 121 are arranged in parallel in the third direction C-C, and the plurality of heat exchange tubes 122 are arranged in parallel in the second direction B-B. The hot air flows from the air inlet area 111 to the air outlet area 112 along the first directionbase:Sub>A-base:Sub>A, and the windward area of the heat exchanger 122 is maximized, so that the heat exchange tube 122 and the heat exchange fins 121 can fully cool the passing hot air, and the heat exchange efficiency is improved.

Further, as shown in fig. 1 and 3, the ratio of the pitch of the adjacent heat exchange tubes 122 to the width of the heat exchange plates 121 in the second direction B-B is greater than or equal to 0.05, and less than or equal to 0.6, such as 0.05, 0.3, or 0.6, etc., and the ratio of the pitch of the adjacent heat exchange tubes 122 to the pitch of the adjacent heat exchange plates 121 is greater than or equal to 2, and less than or equal to 12, such as 2, 6, 10, or 12, etc. Since the heat exchanging fins 121 are arranged in parallel in the third direction C-C, the plane of the heat exchanging fins 121 is located in the first directionbase:Sub>A-base:Sub>A, so that the condensed water on the heat exchanging fins 121 may drip downward along the first directionbase:Sub>A-base:Sub>A. In order to ensure that the dripping condensed water can be collected completely and simultaneously to carry out certain rectification and diversion on the sinking cold air.

Further, as shown in fig. 1, the height of the housing 110 in the first directionbase:Sub>A-base:Sub>A is less than or equal to 350mm, such as 350mm, 300mm, or 200mm, etc., and the ratio of the length of the housing 110 in the third direction C-C to the height thereof in the first directionbase:Sub>A-base:Sub>A is greater than or equal to 1 and less than or equal to 8, such as 1, 3, 5, or 8, etc. Since the heat exchange tube 122 extends along the third direction C-C, the longer the length of the shell 110 in the third direction C-C is, the larger the cooling area that can be covered by the shell 110 is, but the refrigerant inside the excessively long heat exchange tube 122 is prone to have a larger overheating state in the third direction C-C, so that the phenomenon that the temperature of the heat exchanger is inconsistent in the third direction is caused, and the overall cooling effect is unfavorable. Therefore, the ratio of the length of the housing 110 in the third direction C-C to the height thereof in the first directionbase:Sub>A-base:Sub>A is within the above-mentioned optimum ratio range and can be adjusted according to practical situations.

In addition, the ratio of the width of the air inlet region 111 in the second direction B-B to the height of the housing 110 in the first directionbase:Sub>A-base:Sub>A is greater than or equal to 0.5 and less than or equal to 5, such as 0.5, 3, or 5. The ratio of the width of the air outlet region 112 in the third direction C-C to the width of the air inlet region 111 in the second direction B-B is greater than or equal to 0.5 and less than or equal to 1, for example, 0.5, 0.8, or 1, that is, the width of the air inlet region 111 needs to be greater than or equal to the width of the air outlet region 112, so as to prevent external air from flowing back from the air outlet region 112 due to the excessively large width of the air outlet region 112, and hot air can condense in the air outlet region 112, so that condensed water which cannot be collected is formed and drops, thereby affecting the use experience of a user.

The indoor unit 100 of the air conditioner of the present application may be installed in a wall-mounted manner, or may be integrated with a home-mounted ceiling. When the air-conditioning indoor unit 100 is integrated with a home-installed ceiling, different installation forms of the plurality of air-conditioning indoor units 100 on the ceiling may be performed, that is, the air-conditioning indoor units may be arranged along one side or a plurality of side walls, or may be arranged in different areas without depending on the side walls.

Referring to fig. 5, fig. 5 is a schematic view of an overall structure of another embodiment of the indoor unit of an air conditioner according to the present application. The air intake area 111 of the indoor unit 100 is usually covered with a filter screen 140, and the filter screen 140 at least completely covers the air intake area 140. The hot air is filtered by the filter screen 140 and then enters the air inlet region 111, and the heat exchanger 120 that is refrigerated by the natural convection technology in the present application has much condensed water, so that the filter screen 140 can be cleaned by the condensed water. Specifically, the indoor unit 100 of an air conditioner further includes a collection box 150, a spray head 160, and a water pump 170, wherein the collection box 150 communicates with the water collection tank 133 to collect the condensed water discharged from the water collection tank 133. The spray nozzle 160 is located on one side of the filter screen deviating from the air inlet area 111 and is communicated with the collecting box 150 so as to spray condensed water on the filter screen 140, the condensed water cleans the filter screen 140, and the spray range of the spray nozzle 160 covers the filter screen 140 comprehensively. The water pump 170 pumps the condensed water in the collection box 150 into the spray head 160.

It should be noted that the collection box 150 is provided with a discharge port, the discharge port is kept in a normally open state to discharge condensed water, the discharge port is closed only before the filter screen 140 needs to be cleaned, and when the water amount in the collection box 150 is stored to be not higher than the liquid level of the condensed water discharge port of the water collection tank 133, the water pump 170 is started to pump the water in the collection box 150 into the spray head 160, and the spray head 160 sprays the condensed water onto the filter screen 140. The cleaned water with the dirt naturally drops down the guide plate 130 into the water collecting tank 133 and is discharged into the collecting box 150 again. The collection box 150 needs to be cleaned periodically.

Through setting up above-mentioned structure, reuse in clean filter screen 140 with the comdenstion water, improve energy utilization and rate, keep filter screen 140's cleanliness factor simultaneously, maintain air-out efficiency and quality of air conditioning indoor set.

In another embodiment of the present application, a refrigeration system 200 is provided, and includes a compressor 210, a condenser 220 electrically connected to the compressor 210, a throttling device 230 electrically connected to the condenser 220, and at least one indoor air conditioning unit 100 according to any one of the above embodiments, where the indoor air conditioning unit 100 is electrically connected to the throttling device 230.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a refrigeration system according to an embodiment of the present application. In one embodiment, the indoor unit 100 is used alone in a refrigeration system 200 using freon as a refrigerant, and is connected in series with a throttling device 230, a condenser 220, and a compressor 210.

Referring to fig. 7 to 8, fig. 7 is a schematic structural diagram of a refrigeration system according to another embodiment of the present application; fig. 8 is a schematic structural view of yet another embodiment of the refrigeration system of the present application. In another embodiment, there are a plurality of air-conditioning indoor units 100 in the refrigeration system 200 using freon as refrigerant, and the air-conditioning indoor units 100 are arranged in parallel, and there may be one throttling device 230 to control all the air-conditioning indoor units 100; or, the number of the throttling devices 230 is the same as that of the indoor units 100, and each throttling device 230 is respectively arranged in one-to-one correspondence with each indoor unit 100, so that each indoor unit 100 can be independently adjusted and used.

Referring to fig. 9 to 10, fig. 9 is a schematic structural diagram of a refrigeration system according to another embodiment of the present application; fig. 10 is a schematic structural view of another embodiment of the refrigeration system of the present application. In another embodiment, the indoor unit 100 is applied to a central air conditioning system using water as a cooling medium, and the refrigeration system 200 further includes an intermediate heat exchanger 240 electrically connected to the compressor 210 and a water pump 250 electrically connected to the intermediate heat exchanger. If the indoor unit 100 of the air conditioner has one, after being electrically connected with the water pump 250, the indoor unit is electrically connected with the throttling device 230, the condenser 220 and the compressor 210 through the intermediate heat exchanger 240; or, if there are a plurality of indoor units 100, the refrigeration system 200 further includes a control valve 260, where the control valve 260 is disposed in one-to-one correspondence with the indoor unit 100 to individually adjust and use each indoor unit 100.

By adopting the air-conditioning indoor unit 100 in any of the embodiments, the refrigeration system 200 of the present application can meet the refrigeration requirement without a fan by relying on the principle that the air density changes with the temperature to form natural circulation, thereby achieving noiseless and low wind sensation. In addition, the air guide plate 130 serves to guide and rectify the cool air cooled by the heat exchanger 120. For example, when the air conditioning indoor unit 100 is disposed near a wall, the guide plate 130 may guide the cold air toward the wall, and the cold air contacts the wall, sinks to the ground and diffuses, so as to prevent the cold air from directly diffusing toward people, thereby further reducing the wind sensation; and when the air conditioning indoor unit 100 is not installed against a wall, the guide plate 130 guides the cool air to a direction opposite to the direction of the user, thereby preventing the cool air from directly flowing toward the direction of the user, reducing the wind sensation, and improving the user experience.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims

1. An indoor unit of an air conditioner, comprising:

the air conditioner comprises a shell, a fan and a fan, wherein an air inlet area and an air outlet area which are opposite to each other in a first direction are formed in the shell, and the shell forms an accommodating cavity;

the heat exchanger is arranged in the accommodating cavity, and the projection of the air inlet area along the first direction falls on the heat exchanger;

the guide plate is arranged in the accommodating cavity and positioned between the heat exchanger and the air outlet area, and the projection of the heat exchanger in the first direction falls on the guide plate;

the flow guide plate comprises a flow guide plate and a bending plate, wherein the bending plate extends from the flow guide plate to the air outlet area and bends to the air inlet area;

the bending plate forms a water collecting groove, a chamfered edge is formed on the outer side wall of the bending plate, which is opposite to the water collecting groove, and the inclined direction of the chamfered edge is the same as that of the drainage plate.

2. An indoor unit of an air conditioner according to claim 1, wherein the flow guide plate is inclined with respect to the first direction.

3. An indoor unit of an air conditioner as claimed in claim 2, wherein the number of the air deflectors is one or more, and a plurality of the air deflectors are arranged at intervals in a second direction, and the first direction and the second direction are perpendicular to each other.

4. An indoor unit of an air conditioner according to claim 3, wherein the flow guide plates of the plurality of flow guide plates are arranged in parallel, and a ratio of a distance between adjacent flow guide plates to a height of the casing in the first direction is not less than 0.05 but not more than 1.

5. An indoor unit of an air conditioner according to claim 3, wherein the casing includes a front panel and a back panel opposed to each other in the second direction, and the flow guide plate is inclined toward the back panel in a direction from the air-in area to the air-out area; in the second direction, the minimum distance from one side of the heat exchanger close to the rear back plate is greater than or equal to the minimum distance from one end of the guide plate close to the air outlet area to the rear back plate; the minimum distance from one end of the guide plate close to the air outlet area to the rear back plate is more than or equal to 5mm.

6. An indoor unit of an air conditioner according to claim 2, wherein the angle of inclination of the flow guide plate with respect to the first direction is 5 ° to 75 °.

7. An indoor unit of an air conditioner according to claim 2, wherein the thickness of the air guide plate is 3mm or less.

8. The indoor unit of claim 2, wherein the bent plate includes a guide portion and a bent portion, the guide portion being connected to the flow guide plate; the bending part is connected with the guiding part and bends towards the air inlet area to form the water collecting tank.

9. An indoor unit of an air conditioner according to claim 8, wherein at least one end of the inner bottom wall of the water collecting groove is inclined toward the air outlet.

10. An indoor unit of an air conditioner according to claim 8, wherein the water collection groove is formed in a circular arc shape, and a ratio of a radius of the water collection groove to a thickness of the drainage plate is 0.4 or more and 3 or less.

11. An indoor unit of an air conditioner according to claim 10, wherein a ratio of a height of the guide portion in the first direction to a radius of the water collection groove is 1 or more and 5 or less.

12. An indoor unit of an air conditioner according to claim 8, wherein an end of the bending portion that is not connected to the guide portion is bent toward the guide portion.

13. An indoor unit of an air conditioner according to claim 2, wherein the chamfered edge is connected to a bottom end of the bent plate.

14. An indoor unit of an air conditioner according to claim 3, wherein the casing includes a front panel and a back panel opposed in the second direction, and a left side panel and a right side panel opposed in a third direction, the first direction, the second direction and the third direction being perpendicular to each other; the heat exchanger comprises a plurality of heat exchange fins which are arranged in parallel and a plurality of heat exchange tubes which penetrate through the heat exchange fins, and an included angle between the central plane of the heat exchanger and the third direction is less than 10 degrees.

15. An indoor unit of an air conditioner according to claim 14, wherein a height of the casing in the first direction is 350mm or less; the ratio of the length of the shell in the third direction to the height of the shell in the first direction is more than or equal to 1 and less than or equal to 8; the ratio of the width of the air inlet area in the second direction to the height of the shell in the first direction is greater than or equal to 0.5 and less than or equal to 5; the ratio of the width of the air outlet area in the third direction to the width of the air inlet area in the second direction is greater than or equal to 0.5 and less than or equal to 1.

16. An indoor unit of an air conditioner according to claim 14, wherein the ratio of the distance between adjacent heat exchange fins to the width of the heat exchange fin in the second direction is greater than or equal to 0.05 and less than or equal to 0.6; the ratio of the space between the adjacent heat exchange tubes to the space between the adjacent heat exchange fins is more than or equal to 2 and less than or equal to 12.

17. An indoor unit of an air conditioner according to claim 9, further comprising:

the filter screen at least covers the air inlet area;

the collecting box is communicated with the water collecting tank so as to collect the condensed water discharged by the water collecting tank;

the spray head is positioned on one side of the filter screen, which is far away from the air inlet area, and is communicated with the collecting box so as to spray the condensed water on the filter screen, and the condensed water is collected by the water collecting tank after passing through the filter screen;

and the water pump is used for pumping the condensed water in the collecting box into the spray head.

18. An indoor unit of an air conditioner according to claim 17, wherein the collecting case is provided with an outlet.

19. A refrigeration system comprising a compressor, a condenser electrically connected to the compressor, a throttling device electrically connected to the condenser, and at least one indoor air conditioning unit according to any one of claims 1 to 18, the indoor air conditioning unit being electrically connected to the throttling device.

20. The refrigeration system according to claim 19, wherein the number of said air conditioning indoor units is plural, and a plurality of said air conditioning indoor units are connected in parallel;

the number of the throttling devices is one, so that all the air-conditioning indoor units can be controlled; or the throttling devices are multiple and are arranged in one-to-one correspondence with the indoor units of the air conditioner.

21. The refrigeration system of claim 19, further comprising an intermediate heat exchanger electrically connected to the compressor and a water pump electrically connected to the intermediate heat exchanger, the indoor air conditioning unit having one; or the air-conditioning indoor units are provided with a plurality of air-conditioning indoor units, the refrigerating system further comprises a plurality of control valves, and the control valves and the air-conditioning indoor units are arranged in a one-to-one correspondence mode.