Ultrathin radiation convection household air conditioner indoor unit

Abstract

The utility model provides an ultra-thin radiation convection household air conditioner indoor unit. The ultra-thin radiation convection household air conditioner indoor unit comprises an indoor unit shell and a micro-channel radiation heat exchanger assembly fixedly arranged on the front face of the indoor unit shell. The micro-channel radiation heat exchanger assembly comprises a micro-channel radiation plate, an upper refrigerant circulation manifold and a lower refrigerant circulation manifold, wherein a through hole penetrating up and down is formed in the micro-channel radiation plate; the upper refrigerant circulation manifold is communicated with the upper part of the through hole of the micro-channel radiation plate; the lower refrigerant circulation manifold is communicated with the lower part of the through hole of the micro-channel radiation plate; one end of the refrigerant upper circulation manifold is communicated with a first refrigerant connecting pipe of the air conditioner outdoor unit, and the other end of the refrigerant upper circulation manifold is closed; one end of the refrigerant lower circulation manifold is communicated with a second refrigerant connecting pipe of the air conditioner outdoor unit, and the other end of the refrigerant lower circulation manifold is closed; the first refrigerant connecting pipe and the second refrigerant connecting pipe are distributed diagonally; the air conditioner has the advantages of being ultra-thin in structure, free of wind feeling, high in comfort, free of electrification and capable of achieving energy-saving and silent operation.

Description

Technical Field

[0001] The utility model relates to an ultra-thin radiation-convection household air conditioner indoor unit, which relates to the field of heating, ventilation and air conditioning. Background Art

[0002] At present, the indoor units of household air conditioners mainly rely on forced convection heat transfer. No matter what changes are made by various manufacturers, such as wall-mounted, floor-standing, cylindrical, square, etc., they all have one thing in common: they need to forcibly drive the air by the indoor unit fan to exchange heat with the surface cooler of the indoor unit to achieve the process of heating or cooling the indoor air. There are many changes in various shapes and appearances, but the heat transfer method of the indoor unit has not been fundamentally changed. There are the following problems to a certain extent, there is a noise problem, especially more sensitive at night. At the same time, the traditional household air conditioner has an obvious blowing feeling, which makes people feel uncomfortable, with wind hitting the back of the head, dizziness and stuffiness, and it is very easy to get air-conditioning diseases. At the same time, at the end of the convection-type air conditioner, bacteria are also very easy to breed. The fin of the surface cooler and the inside of the indoor unit are dirty and easy to get moldy, which is unhealthy, has a large wind resistance, high energy consumption, many easily damaged parts in mechanical movement, large geometric size of the indoor unit, occupies space, and often needs to be cleaned and maintained, etc. These are all common problems of the traditional forced convection type indoor units of household air conditioners. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an ultra-thin radiation-convection household air conditioner indoor unit with an ultra-thin structure, no wind feeling, higher comfort, simple indoor unit structure, no power supply required, energy-saving and silent operation.

[0004] The technical solution adopted by the utility model to achieve the above technical problem is:

[0005] An ultra-thin radiation-convection household air conditioner indoor unit, which includes an indoor unit housing and a micro-channel radiation heat exchanger assembly fixedly arranged on the front of the indoor unit housing;

[0006] The micro-channel radiation heat exchanger assembly includes a micro-channel radiation plate with upper and lower through holes inside, a refrigerant upper circulation manifold communicated with the upper part of the through hole of the micro-channel radiation plate, and a refrigerant lower circulation manifold communicated with the lower part of the through hole of the micro-channel radiation plate,

[0007] One end of the refrigerant upper circulation manifold is communicated with the first refrigerant connecting pipe of the outdoor unit of the air conditioner, and the other end is closed;

[0008] One end of the refrigerant lower circulation manifold is communicated with the second refrigerant connecting pipe of the outdoor unit of the air conditioner, and the other end is closed;

[0009] The first refrigerant connecting pipe and the second refrigerant connecting pipe are diagonally distributed;

[0010] The first refrigerant connecting pipe and the second refrigerant connecting pipe are respectively communicated with the outdoor unit of the air conditioner through refrigerant connecting pipes to form a refrigerant circulation pipeline.

[0011] Further, the microchannel radiation plate is arranged on the front of the indoor unit housing, and its front radiation surface serves as the front of the indoor unit housing. Heat dissipation fins are arranged on the back surface of the microchannel radiation plate.

[0012] Further, the cross-sectional shape of the heat dissipation fins is oval or semi-circular.

[0013] Further, the indoor unit housing is of a flat rectangular structure. Its back plate, upper top plate, lower bottom plate, left side plate, and right side plate form five surfaces of the indoor unit housing. The microchannel radiation plate serves as the front of the indoor unit housing. An upper circulation air inlet is left between the microchannel radiation heat exchanger assembly and the upper top plate of the indoor unit housing. A lower circulation air inlet is left between the microchannel radiation heat exchanger assembly and the lower bottom plate of the indoor unit housing. An air natural convection upper and lower channel is formed between the back surface of the microchannel radiation plate and the indoor unit housing. The heat dissipation fins are arranged in the air natural convection upper and lower channel.

[0014] Further, isolation nets are respectively arranged at the upper circulation air inlet and the lower circulation air inlet.

[0015] Further, the upper circulation air inlet is located on the lower side of the upper top plate of the indoor unit housing and on the upper side of the refrigerant upper circulation manifold. The lower circulation air inlet is located on the upper side of the lower bottom plate of the indoor unit housing and on the lower side of the refrigerant lower circulation manifold.

[0016] Further, heat insulation layers are arranged on the back plate, upper top plate, lower bottom plate, left side plate, and right side plate of the indoor unit housing.

[0017] Further, a condensate drain outlet is arranged on the lower side of the lower bottom plate of the indoor unit housing.

[0018] Further, the width of the indoor unit housing is the same as that of the microchannel radiation plate, and the thickness of the indoor unit housing is 15 - 25 mm.

[0019] Further, the front radiation area of the microchannel radiation plate is 1 - 1.5 m 2 .

[0020] The beneficial effects of adopting the above technical solutions are as follows:

[0021] This utility model completely bids farewell to the forced convection heat exchange method, and the heat exchange methods are essentially different. It adopts the form of cold / hot radiation + natural convection of air for heat dissipation and cooling, with an ultra-thin structure, featuring no wind feeling and higher comfort. Its indoor unit has a simple structure, does not require power supply, operates energy-efficiently and quietly. The indoor unit has no energy consumption and no mechanical moving parts with low maintenance costs. It is hygienic without dirt accumulation, healthy, ultra-thin and can be hung on the wall like a painting, without occupying much indoor space, being beautiful and generous, and having a high cost performance, representing the future development direction of the indoor unit of household machines.

[0022] This utility model exchanges heat between the indoor unit and indoor air in the way of heat radiation plus natural circulation convection. The indoor unit has no mechanical power-consuming components, which is essentially different from the heat exchange method of the traditional indoor unit of household air conditioners.

[0023] The microchannel radiation plate of this utility model adopts a single-row aluminum microchannel heat exchange plate, which is inlaid on the front of the indoor unit housing. The front of the microchannel radiation plate mainly exchanges heat through cold and hot radiation. A refrigerant upper circulation manifold is arranged on the upper side of the microchannel radiation plate, and a refrigerant lower circulation manifold is arranged on the lower side of the microchannel radiation plate. The refrigerant upper circulation manifold, the refrigerant lower circulation manifold and the microchannel radiation plate are welded to form an integral heat exchanger. Heat dissipation fins are welded on the back of the microchannel radiation plate, and the heat dissipation fins and the microchannel radiation plate are welded into an integral structure. The heat dissipation fins can easily conduct heat out, which is equivalent to increasing the heat exchange area of natural convection.

[0024] This utility model leaves an upper circulation air vent at the refrigerant upper circulation manifold and the upper top plate, and leaves a lower circulation air vent at the refrigerant lower circulation manifold and the lower bottom plate, so that air convection occurs, and natural circulation cooling and heating are realized through the upper circulation air vent and the lower circulation air vent.

[0025] The inner side of the housing of the indoor unit of this utility model is pasted with a heat insulation layer, so that the heat radiation heat transfer and heat transfer from the microchannel radiation plate and the heat dissipation fins to the back plate of the indoor unit housing are inhibited and blocked. All the surfaces of the microchannel radiation plate and the heat dissipation fins in contact with air participate in the natural convection heat exchange process of air, with high thermal efficiency and a compact structure. The geometric shape of the indoor unit housing is rectangular and flat, similar to an ultra-thin painting, and can be hung on the wall with a good decorative effect. Description of the Drawings

[0026] Figure 1 is the structural schematic diagram of this utility model;

[0027] Figure 2 is the a-a cross-sectional structural schematic diagram of this utility model;

[0028] Figure 3 is the partial top view structural schematic diagram of this utility model;

[0029] 1. Micro-channel radiation heat exchanger assembly, 101. Micro-channel radiation plate, 102. Refrigerant upper circulation manifold, 103. Refrigerant lower circulation manifold, 104. Front radiation surface, 105. Heat dissipation fins, 106. Natural air convection upper and lower channels, 107. First refrigerant connecting pipe, 108. Second refrigerant connecting pipe, 2. Indoor unit housing, 201. Thermal insulation layer, 202. Upper top plate, 203. Lower bottom plate, 204. Upper circulation air inlet, 205. Lower circulation air inlet, 206. Isolation net, 207. Condensate drain outlet. Detailed implementation mode

[0030] The present utility model will be further described below with reference to the accompanying drawings.

[0031] As shown in the attached Figures 1 - 3 As shown, this embodiment provides a thin and ultra-thin radiation-convection household air conditioner indoor unit, which includes an indoor unit housing 2 and a micro-channel radiation heat exchanger assembly 1 fixedly arranged on the front of the indoor unit housing 2; the micro-channel radiation heat exchanger assembly 1 includes a micro-channel radiation plate 101 with upper and lower through holes arranged inside, a refrigerant upper circulation manifold 102 communicated with the upper part of the through hole of the micro-channel radiation plate 101, and a refrigerant lower circulation manifold 103 communicated with the lower part of the through hole of the micro-channel radiation plate strip 101. One end of the refrigerant upper circulation manifold 102 is communicated with the first refrigerant connecting pipe 107 of the outdoor unit of the air conditioner, and the other end is closed; one end of the refrigerant lower circulation manifold 103 is communicated with the second refrigerant connecting pipe 108 of the outdoor unit of the air conditioner, and the other end is closed; the first refrigerant connecting pipe 107 and the second refrigerant connecting pipe 108 are diagonally distributed, and the first refrigerant connecting pipe 107 and the second refrigerant connecting pipe 108 are respectively communicated with the outdoor unit of the air conditioner through refrigerant connecting pipes to form a refrigerant circulation pipeline. The present utility model completely abandons the forced convection heat exchange method, and the heat exchange method is essentially different. It mainly uses the form of cold / heat radiation + natural air convection for heat dissipation and cooling. It has an ultra-thin structure, has the characteristics of no wind feeling and higher comfort; its indoor unit structure is simple, does not require power supply, operates energy-saving and quietly, the indoor unit has no energy consumption and no mechanical movement loss components, the maintenance cost is low, there is no problem of dirt and scale, etc., which is unhygienic and healthy. The ultra-thin type can be hung on the wall like a painting, does not occupy a large indoor space, is beautiful and generous, and has a high cost performance, representing the development direction of future indoor units of household machines.

[0032] The micro-channel radiation plate 101 is arranged on the front of the indoor unit housing 2, and its front radiation surface 104 serves as the front of the indoor unit housing 2. The front radiation area of the micro-channel radiation plate 101 is 1 - 1.5 m 2, that is, it can be used to match household air conditioners of 1 horsepower or 1.5 horsepower. The width of the inner machine housing 2 is the same as the width of the microchannel radiation plate 101, and the thickness of the inner machine housing 2 is 15 - 25 mm. Heat dissipation fins 105 are arranged on the back surface of the microchannel radiation plate 101. The cross-sectional shape of the heat dissipation fins 105 is oval or semi-circular. The heat dissipation fins 105 and the microchannel radiation plate 101 are welded into an integral structure. The inner machine housing 2 is a flat rectangular structure, and its back plate, upper top plate 202, lower bottom plate 203, left side plate and right side plate form five faces of the inner machine housing 2. The microchannel radiation plate 101 serves as the front face of the inner machine housing 2. There is an upper circulation air outlet 204 left between the microchannel radiation heat exchanger assembly 1 and the upper top plate of the inner machine housing 2, and there is a lower circulation air outlet 205 left between the microchannel radiation heat exchanger assembly 1 and the lower bottom plate of the inner machine housing 2. The upper circulation air outlet 204 is located on the lower side of the upper top plate 202 of the inner machine housing 2 and on the upper side of the refrigerant upper circulation manifold 102. The lower circulation air outlet 205 is located on the upper side of the lower bottom plate 203 of the inner machine housing 2 and on the lower side of the refrigerant lower circulation manifold 103. An air natural convection up-and-down channel 106 is formed between the back surface of the microchannel radiation plate 101 and the inner machine housing 2. The heat dissipation fins 105 are arranged in the air natural convection up-and-down channel 106. The heat dissipation fins 105 can easily conduct heat out, which is equivalent to increasing the heat transfer area of natural convection.

[0033] Isolation nets 206 are respectively arranged at the upper circulation air outlet 204 and the lower circulation air outlet 205, which can intercept larger suspended matters or mosquitoes in the air.

[0034] Heat insulation layers 201 are arranged on the back plate, upper top plate 202, lower bottom plate 203, left side plate and right side plate of the inner machine housing 2, so that the heat radiation heat transfer and heat transfer from the microchannel radiation plate and the heat dissipation fins to the back plate surface of the inner machine housing are inhibited and blocked. All the surfaces of the microchannel radiation plate and the heat dissipation fins in contact with the air participate in the natural convection heat transfer process of the air, with high heat efficiency and compact structure.

[0035] A condensate drain port 207 is arranged on the lower side of the lower bottom plate 203 of the inner machine housing 2. During the summer refrigeration process, all condensate is drained away through the condensate drain port 207.

[0036] The working principle is as follows:

[0037] Two refrigerant connecting pipes of the outdoor unit of the air conditioner are respectively connected to one end of the upper refrigerant circulation manifold 102 and the lower refrigerant circulation manifold 103. The first refrigerant connecting pipe 107 and the second refrigerant connecting pipe 108 are diagonally connected, forming a complete refrigerant circulation mechanism together with the outdoor unit of the air conditioner; during the refrigeration / heating process, the refrigerant directly exchanges heat in the microchannel radiation heat exchanger assembly 1. Due to the temperature difference with the indoor air, a heat exchange process is formed between the front radiation surface 104 of the microchannel radiation plate 101 and the surrounding environment in the form of thermal radiation; at the same time, in the natural convection upper and lower air channels 106 formed by the back of the microchannel radiation plate 101 and the inner machine housing 2, due to the fluid thermosiphon phenomenon caused by the air temperature difference, the flowing air exchanges heat with the heat dissipation fins 105, and then constitutes a natural circulation heat exchange process of the indoor air in the upper circulation air outlet 204, the lower circulation air outlet 205 and the natural convection upper and lower channels 106, so as to achieve the purpose of heating or cooling the indoor air. Since the inner machine housing structure 2 is internally lined with a heat insulation layer 201 without dead corners, all the condensed water is drained away through the condensed water drainage interface 207. The utility model exchanges heat with the indoor air in the form of thermal radiation plus natural circulation convection for the indoor unit. The indoor unit has no mechanical power-consuming components, which is essentially different from the heat exchange method of the traditional household air conditioner indoor unit.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultra-thin radiation convection household air conditioner indoor unit, characterized in that: It comprises an inner casing (2), and a microchannel radiation heat exchanger assembly (1) fixedly arranged on the front side of the inner casing (2); The microchannel radiation heat exchanger assembly (1) comprises a microchannel radiation plate (101) provided with upper and lower through holes therein, a refrigerant upper circulation header (102) connected to the upper part of the through holes of the microchannel radiation plate (101), and a refrigerant lower circulation header (103) connected to the lower part of the through holes of the microchannel radiation plate (101); One end of the refrigerant upper circulation manifold (102) is connected to the first refrigerant connecting pipe (107) of the air conditioner outdoor unit, and the other end is closed; One end of the refrigerant lower circulation manifold (103) is connected to the second refrigerant connecting pipe (108) of the air conditioner outdoor unit, and the other end is closed; The first refrigerant connecting pipe (107) and the second refrigerant connecting pipe (108) are distributed diagonally; The first refrigerant connecting pipe (107) and the second refrigerant connecting pipe (108) are respectively connected to the air conditioner outdoor unit through the refrigerant connecting pipes to form a refrigerant circulation pipeline.

2. The ultra-thin radiation convection household air conditioner indoor unit according to claim 1, characterized in that: The microchannel radiation plate (101) is arranged on the front side of the inner casing (2), and its front radiation surface (104) serves as the front side of the inner casing (2). Heat dissipation fins (105) are arranged on the back side of the microchannel radiation plate (101).

3. The ultra-thin radiation convection household air conditioner indoor unit according to claim 2, characterized in that: The cross-sectional shape of the heat dissipation fin (105) is elliptical or semicircular.

4. The ultra-thin radiation convection household air conditioner indoor unit according to claim 2, characterized in that: The inner casing (2) is a flat rectangular structure, wherein the back plate, the upper top plate (202), the lower bottom plate (203), the left side plate and the right side plate constitute the five surfaces of the inner casing (2); the microchannel radiation plate (101) serves as the front surface of the inner casing (2); an upper circulation air outlet (204) is left between the microchannel radiation heat exchanger assembly (1) and the upper top plate of the inner casing (2); a lower circulation air outlet (205) is left between the microchannel radiation heat exchanger assembly (1) and the lower bottom plate of the inner casing (2); an upper and lower air natural convection channel (106) is formed between the back surface of the microchannel radiation plate (101) and the inner casing (2); and the heat dissipation fins (105) are arranged in the upper and lower air natural convection channel (106).

5. The ultra-thin radiation convection household air conditioner indoor unit according to claim 4, characterized in that: Isolation nets (206) are respectively provided at the upper circulation air outlet (204) and the lower circulation air outlet (205).

6. The ultra-thin radiation convection household air conditioner indoor unit according to claim 4, characterized in that: The upper circulation air outlet (204) is located on the lower side of the upper top plate (202) of the inner machine casing (2), and is located on the upper side of the refrigerant upper circulation branch pipe (102); the lower circulation air outlet (205) is located on the upper side of the lower bottom plate (203) of the inner machine casing (2), and is located on the lower side of the refrigerant lower circulation branch pipe (103).

7. The ultra-thin radiation convection household air conditioner indoor unit according to claim 4, characterized in that: A thermal insulation layer (201) is provided on the back plate, the upper top plate (202), the lower bottom plate (203), the left side plate and the right side plate of the inner casing (2).

8. The ultra-thin radiation convection household air conditioner indoor unit according to claim 1, characterized in that: A condensate water drain port (207) is provided on the lower side of the lower base plate (203) of the inner casing (2).

9. The ultra-thin radiation convection household air conditioner indoor unit according to claim 1, characterized in that: The width of the inner housing (2) is consistent with the width of the microchannel radiation plate (101), and the thickness of the inner housing (2) is 15-25 mm.

10. The ultra-thin radiation convection household air conditioner indoor unit according to claim 1, characterized in that: The front radiation area of ​​the microchannel radiation plate (101) is 1-1.5 m 2 .

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