A thin air-conditioning indoor heat exchange system

Abstract

The present invention discloses a thin air conditioner indoor heat exchange system, including a fan, a shell, a plurality of heat exchangers, a plurality of partitions, etc. The heat exchanger forms an S-shaped air flow channel inside the shell with the partition, the shell is provided with an air inlet at the top and an air outlet at the bottom, the space between the top partition and the top of the shell is used as a negative pressure chamber and a fan is installed, and the external air flows through the S-shaped air flow channel through the fan and each heat exchanger and flows out from the air outlet. The present invention utilizes the grouped staggered design of the heat exchanger and the S-shaped air flow channel to achieve ultra-thin design and low wind resistance requirements. It provides a solution for the ultra-thin design of some special air conditioners in the future.

Description

Technical Field

[0001] The invention relates to the field of air-conditioning heat exchange devices, in particular to a thin air-conditioning indoor heat exchange system. Background Art

[0002] As the air conditioners for cabinets, shelters, and cabs continue to be updated, their styles and functions are also constantly enriched to meet the growing new demands. At present, there are two main types of cabin and cabinet refrigeration. The first is to directly use the vapor compression refrigeration principle, that is, to use the refrigerant to dissipate heat in the condenser and change into liquid, and absorb heat in the evaporator and change into gas to form a compressor thermodynamic cycle, in which the evaporator achieves refrigeration by obtaining low temperature through the fins outside the tube; the second is to use a secondary low-temperature coolant (coolant) to flow through the heat exchanger to obtain low temperature on the fins outside the tube to achieve refrigeration.

[0003] In actual design, it is often difficult to complete the design of air conditioning equipment due to space and structural limitations. For example, the heat dissipation of some electronic cabinets currently adopts door-type air conditioners or built-in heat exchangers, among which the evaporator or built-in heat exchanger in the cabinet often requires a thin (such as 50 mm to 90 mm) and narrow (such as 300 mm to 500 mm) design. This type of heat exchanger usually adopts a finned tube heat exchanger, in which the refrigerant or coolant flows in the tube, and the wind generated by the fan outside the tube blows through the fins for heat exchange. Considering the heat exchange effect and wind resistance, the number of rows of heat exchangers along the airflow direction is usually 2 to 9 rows, but sometimes in order to achieve sufficient heat exchange area, the number of rows of heat exchangers along the airflow direction far exceeds this number, resulting in particularly large wind resistance (such as more than 400Pa), and general heat exchange solutions are difficult to implement. There are also some air conditioners installed on the back of the cab seat or attached to the bulkhead in the cabin, which also face the above problems.

[0004] How to utilize narrow and limited space, taking into account heat exchange wind resistance and internal and external air circulation, and using clever heat exchange arrangements is of undoubted significance in improving the heat exchange performance of certain special air conditioners. Summary of the invention

[0005] The purpose of the present invention is to provide a thin air-conditioning indoor heat exchange system to solve the problem that the air-conditioning heat exchange device in the prior art is difficult to be installed in a narrow space.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A thin air-conditioning indoor heat exchange system, characterized in that: it comprises a shell, wherein two opposite vertical sides of the shell are respectively connected to a plurality of partitions, and the partitions of the two vertical sides are staggered from top to bottom, that is, one of the two adjacent partitions in the vertical direction is connected to one vertical side, and the other is connected to the other vertical side, and there is a gap between each partition and the opposite vertical side, and heat exchangers are respectively installed between the two adjacent partitions in the vertical direction, and each heat exchanger has the same angle with the vertical direction due to the staggered distribution of the partitions in the vertical direction, and the angles of the two adjacent heat exchangers in the vertical direction with the vertical direction are different, and the pipes in the plurality of heat exchangers are connected to each other;

[0008] An air inlet is provided at the top of the shell, and an air outlet is provided at the bottom. The air inlet side of each heat exchanger faces upward, and the air outlet side of each heat exchanger faces downward. The space between the top partition in the shell and the top of the shell is a negative pressure chamber, and the space below the top partition is a positive pressure chamber. A fan is installed in the negative pressure chamber, and the air inlet of the fan is connected to the negative pressure chamber, and the air outlet of the fan is connected to the space between the top partition and the vertical side opposite to the partition.

[0009] Under the action of the fan, external air enters the negative pressure chamber from the air inlet on the top of the shell, and is sent to the positive pressure chamber from the air outlet of the fan. The air outlet of the fan blows to each heat exchanger from top to bottom in turn, thus forming an S-shaped airflow field alternating from top to bottom and left to right. Finally, the air outlet of the fan is blown out from the air outlet at the bottom of the shell.

[0010] The thin air-conditioning indoor heat exchange system is characterized in that the shell is an integral structure or an assembled structure.

[0011] The thin air conditioner indoor heat exchange system is characterized in that at least one of the two vertical side surfaces of the shell is provided with a side upper air inlet corresponding to the position of the negative pressure cavity.

[0012] The thin air-conditioning indoor heat exchange system is characterized in that at least one of the two vertical side surfaces of the shell is provided with a side lower air outlet near the bottom corresponding to the positive pressure cavity.

[0013] The thin air-conditioning indoor heat exchange system is characterized in that: except for the top partition, the other partitions are all trapezoidal structures with inclined upper and lower sides, and the angle between the two inclined surfaces in each trapezoidal structure is the same as the angle between the heat exchanger and the vertical direction; thus, in two adjacent heat exchangers in the vertical direction, the condensed water generated on the surface of the upper heat exchanger can flow down to the partition at the lower end of the heat exchanger, and flow along the inclined surface of the partition to the heat exchanger below, and the condensed water generated by each heat exchanger finally converges downward.

[0014] The thin air-conditioning indoor heat exchange system is characterized in that the partition at the lower end of the lowest heat exchanger in the shell is eliminated and replaced by a water tank, and the lower end of the lowest heat exchanger extends into the water tank, so that the condensed water generated by each heat exchanger flows downward into the water tank.

[0015] The thin air-conditioning indoor heat exchange system is characterized in that: except for the top partition, the rest of the partitions are horizontal plates, and each horizontal plate is provided with a condensation water channel vertically penetrating the horizontal plate, and the lower partition of the two vertically adjacent partitions is located directly below the upper partition, so that the angle between the heat exchanger between the upper and lower adjacent partitions and the vertical direction is zero; the condensation water generated on the surface of the upper heat exchanger can flow downstream to the partition at the lower end of the heat exchanger, and flow from the condensation water channel of the partition to the heat exchanger below, and the process is repeated, and finally the condensation water generated by each heat exchanger finally flows downward into the water tank.

[0016] The thin air-conditioning indoor heat exchange system is characterized in that the heat exchanger is an evaporator or a surface cooler of the air-conditioning.

[0017] The thin air-conditioning indoor heat exchange system is characterized in that a plurality of heat exchangers are connected in series in the vertical direction.

[0018] The thin air conditioner indoor heat exchange system is characterized in that guide strips are respectively arranged outside the air inlet and outlet sides of the heat exchanger inside the shell.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention makes full use of the grouped staggered design of the heat exchanger and the S-shaped air flow channel to achieve ultra-thin design and low wind resistance requirements.

[0021] 2. The present invention uses the upper part to suck in hot air and the lower part to blow out cold air, so the air flow at the load end is better.

[0022] 3. The present invention provides a new design idea for the design of vertical ultra-thin air conditioner.

[0023] 4. The structure of the present invention is simple, reliable, compact and easy to design. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention.

[0025] Figure 2 This is a special structural diagram when the partition of the present invention is a horizontal plate. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] like Figure 1As shown, a thin air-conditioning indoor heat exchange system is described. This embodiment takes three heat exchangers as an example to illustrate the structure, including a shell 12, a fan 2, a first heat exchanger 5, a second heat exchanger 7, a third heat exchanger 9, an upper partition 3, a first middle partition 6, a second middle partition 8, a water tank 10, an air inlet 1, an air outlet 11, and a plurality of guide strips 4.

[0028] The upper partition 3, the first middle partition 6, the second middle partition 8, and the water tank 10 are arranged in order from top to bottom, wherein: the left end of the upper partition 3 is fixed to the left vertical side of the shell 12, and there is a gap between the right end of the upper partition 3 and the right vertical side of the shell 12. The right end of the first middle partition 6 is fixed to the right vertical side of the shell 12, and there is a gap between the left end of the first middle partition 6 and the left vertical side of the shell 12. The left end of the second middle partition 8 is fixed to the left vertical side of the shell 12, and there is a gap between the right end of the second middle partition 8 and the right vertical side of the shell 12. The water tank 10 is fixed to the right vertical side of the shell 12. Thus, an S-shaped air flow channel is formed inside the shell 12.

[0029] The first heat exchanger 5, the second heat exchanger 7 and the third heat exchanger 9 are all fin-tube heat exchangers of the same size, and are arranged in the middle of the top, middle and bottom. The first heat exchanger 5 is fixed between the upper partition 3 and the first middle partition 6; the second heat exchanger 5 is fixed between the first middle partition 6 and the second middle partition 8; the upper end of the third heat exchanger 9 is fixed to the second middle partition 8, and the lower end of the third heat exchanger 9 extends into the water tank 10. The air inlet side of each heat exchanger faces upward and the air outlet side faces downward.

[0030] The angle θ between each heat exchanger and the vertical direction is the same, but the directions of the angles θ between adjacent heat exchangers in the vertical direction and the vertical direction are different. An approximately triangular space is left on both sides of each heat exchanger. The pipe outlet of the third heat exchanger 9 is connected to the pipe inlet of the second heat exchanger 7, and the pipe outlet of the second heat exchanger 7 is connected to the pipe inlet of the first heat exchanger 5, forming a relatively complete series heat exchange pipeline structure.

[0031] The upper partition 3 is above the first heat exchanger 5, and the space between the upper partition 3 and the top of the shell 12 serves as a negative pressure chamber, and the interior of the shell below the upper partition 3 serves as a positive pressure chamber. A fan 2 is arranged in the negative pressure chamber, and the air inlet of the fan 2 is connected to the negative pressure chamber, and the air outlet of the fan 2 is connected to the interval between the right end of the upper partition 3 and the right vertical side of the shell. An air inlet 1 is arranged at the top of the shell, and an air outlet 11 is arranged at the bottom of the shell. When the fan 2 is working, the ambient air enters the negative pressure chamber and enters the air inlet of the fan 2, and the air from the air outlet of the fan 2 is blown to the first heat exchanger 5, the second heat exchanger 7 and the third heat exchanger 9 in turn, forming an S-shaped airflow field that alternates from top to bottom and left to right. That is, the fan 2 first blows toward the air inlet side of the first heat exchanger 5, blows out from the air outlet side of the first heat exchanger 5, turns downward to the air inlet side of the second heat exchanger 7, blows out from the air outlet side of the second heat exchanger 7, turns downward to the air inlet side of the third heat exchanger 9, blows out from the air outlet side of the third heat exchanger 9, and turns to the air outlet 11 to blow out.

[0032] The first middle partition 6 and the second middle partition 8 are components integrating water blocking, flow guidance, support and heat insulation. The first middle partition 6 and the second middle partition 8 are both trapezoidal structures with inclined upper and lower sides. The angle between the inclined surfaces coincides with the angle θ between the heat exchanger and the vertical direction. When condensed water is generated on the surface of the first heat exchanger 5, it flows along the fins to the first middle partition 6, and flows along the inclined surface of the first middle partition 6 to the second heat exchanger 7, and then flows to the second middle partition 8 after mixing with the condensed water generated on the surface of the second heat exchanger 7, and then flows to the third heat exchanger 9 along the inclined surface of the second middle partition 8, and finally flows into the water tank 10 after mixing with the condensed water generated on the surface of the third heat exchanger 9. The water tank 10 collects the condensed water and discharges it.

[0033] The first heat exchanger 5, the second heat exchanger 7 and the third heat exchanger 9 are evaporators or surface coolers of the air conditioner, and the corresponding pipes contain refrigerant or coolant. Their sizes and pipe distribution can be determined according to heat exchange requirements.

[0034] The guide bars 4 are respectively located on both sides of the first heat exchanger 5, the second heat exchanger 7 and the third heat exchanger 9, and the specific number and shape can be determined according to the designed wind resistance, air volume and space.

[0035] In addition to the air inlet 1, the present invention also has an upper side air inlet 21 on the left vertical side of the shell 12 corresponding to the negative pressure chamber; in addition to the air outlet 22, a lower side air outlet 22 is provided on the left vertical side of the shell corresponding to the positive pressure chamber near the bottom. Of course, the specific positions of the upper side air inlet 21 and the lower side air outlet 22 can also be adjusted according to the requirements of the external air flow field. The upper side air inlet 21 and the lower side air outlet 22 improve the air inlet and outlet capabilities.

[0036] Further explanation:

[0037] The design of the inclination angle θ should comprehensively consider the sizes of the first heat exchanger 5, the second heat exchanger 7 and the third heat exchanger 9 and the total thickness requirement of the indoor heat exchange. Generally, the design angle θ does not exceed 25°.

[0038] In actual design, if 3 groups of heat exchangers are not enough, 4, 5, 6 or other groups can be grafted; if the wind pressure of the selected fan 2 is not enough, an additional fan can be added at the air outlet 11. These do not conflict with the content protected by this patent.

[0039] In addition, there is no special emphasis on heat insulation treatment here because it does not involve the core content to be protected by this patent, but corresponding treatment should be done in actual applications.

[0040] like Figure 2 As shown, Figure 2 This is a schematic diagram of a special application of the structural principle of the present invention, that is, a special case in which the angle θ between the heat exchanger and the vertical direction is zero degrees. At this time, the first heat exchanger 5, the second heat exchanger 7 and the third heat exchanger 9 are arranged vertically. The upper partition 3, the first middle partition 6 and the second middle partition 8 all include horizontal plates, and the three horizontal plates are directly opposite to each other in the vertical direction. Condensate channels are respectively provided in the first middle partition 6 and the second middle partition 8. The condensate generated by the first heat exchanger 5 passes downward through the condensate channel of the first middle partition 6 and flows to the second heat exchanger 7, and together with the condensate generated by the second heat exchanger 7, passes downward through the condensate channel of the second middle partition 8 and flows to the third heat exchanger 9, and merges with the condensate generated by the third heat exchanger 9 to the water tank 10. At the same time, in order to reduce wind resistance, the horizontal plates of the first middle partition 6 and the second middle partition 8 are connected to the corresponding vertical side surfaces of the shell 12 through guide arcs.

[0041] The above embodiments are only preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. For those skilled in the art, any obvious changes made thereto without departing from the principle of the present invention are within the concept of the present invention and the protection scope of the attached claims.

Claims

1. A thin air-conditioning indoor heat exchange system, characterized in that: The invention comprises a shell, wherein two opposite vertical sides of the shell are respectively connected with a plurality of partitions, and the partitions of the two vertical sides are staggered from top to bottom, that is, one of the two adjacent partitions in the vertical direction is connected to one vertical side, and the other is connected to the other vertical side, and there is a gap between each partition and the opposite vertical side, and heat exchangers are respectively installed between the two adjacent partitions in the vertical direction, and each heat exchanger has the same angle with the vertical direction due to the staggered distribution of the vertical partitions, and the angles of the two adjacent heat exchangers in the vertical direction with the vertical direction are different, and the pipes in the plurality of heat exchangers are connected to each other; the shell is provided with an air inlet at the top and a Air outlet, the air inlet side of each heat exchanger faces upward, and the air outlet side of each heat exchanger faces downward, wherein the space between the uppermost partition in the shell and the top of the shell is a negative pressure chamber, and the space below the uppermost partition is a positive pressure chamber, a fan is installed in the negative pressure chamber, the air inlet of the fan is connected to the negative pressure chamber, and the air outlet of the fan is connected to the space between the uppermost partition and the vertical side opposite to the partition; under the action of the fan, the external air enters the negative pressure chamber from the air inlet at the top of the shell, and is sent to the positive pressure chamber from the air outlet of the fan, and the air outlet of the fan is blown to each heat exchanger from top to bottom in turn, thereby forming an S-shaped airflow field alternating from top to bottom and left to right, and finally the air outlet of the fan is blown out from the air outlet at the bottom of the shell; Except for the top baffle, all other baffles are trapezoidal structures with inclined surfaces on the upper and lower sides. The angle between the two inclined surfaces in each trapezoidal structure is the same as the angle between the heat exchanger and the vertical direction. Therefore, in two adjacent heat exchangers in the vertical direction, the condensed water generated on the surface of the upper heat exchanger can flow down to the baffle at the lower end of the heat exchanger, and flow along the inclined surface of the baffle to the lower heat exchanger, and finally the condensed water generated by each heat exchanger will converge downwards. The baffle at the lower end of the lowest heat exchanger in the shell is removed and replaced by a water tank, and the lower end of the lowest heat exchanger extends into the water tank, so that the condensed water generated by each heat exchanger flows downward into the water tank; A plurality of heat exchangers are connected in series in the vertical direction.

2. A thin air-conditioning indoor heat exchange system according to claim 1, characterized in that: The shell is an integral structure or an assembled structure.

3. A thin air-conditioning indoor heat exchange system according to claim 1, characterized in that: At least one of the two vertical side surfaces of the shell is provided with a side upper air inlet corresponding to the position of the negative pressure chamber.

4. A thin air-conditioning indoor heat exchange system according to claim 1, characterized in that: At least one of the two vertical side surfaces of the shell is provided with a side lower air outlet near the bottom corresponding to the positive pressure chamber.

5. The thin air-conditioning indoor heat exchange system according to claim 1, characterized in that: The heat exchanger is an evaporator or a surface cooler of an air conditioner.

6. A thin air-conditioning indoor heat exchange system according to claim 1, characterized in that: Guide strips are arranged inside the shell on the outside of the air inlet and outlet sides of the heat exchanger.

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