Hot air handling unit

Abstract

The utility model discloses a hot air handling unit which comprises a handling case, a partition plate, a first heat exchanger, a surface air cooler, a fan and a second heat exchanger. A closed space is formed in the treatment machine box, and the partition plate is arranged in the treatment machine box and divides the closed space into a first flow channel cavity and a second flow channel cavity; according to the utility model, the purpose of cooling the hot air can be realized by utilizing the heat of the hot air through the first hot air treatment system and the second hot air treatment system which work at the same time, specifically, the hot air is guided to enter the air inlet, and then the air inlet is communicated with the air outlet. The hot air is cooled for the first time under the action of the surface air cooler and the fan, and in the primary cooling process, due to the fact that the hot air makes direct contact with the first heat exchanger, the hot air enables a refrigerant in the first heat exchanger to be evaporated into a vapor state from a liquid state, and the purpose of cooling the hot air can be achieved through the operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to air treatment technical field, concretely relates to a hot air treatment unit. BACKGROUND

[0002] The hot air treatment unit is a device for adjusting and circulating air, which is usually applied in heating, ventilation and air conditioning systems. The hot air treatment unit processes air through various components inside. Outdoor air is introduced into the unit, mixed with return air, and then processed through steps such as filtration, heating or cooling, humidification or dehumidification, and delivered to various indoor areas through a duct system.

[0003] For example, the patent document with the application number CN201220100409.7 discloses a heat recovery type steam heated air treatment unit, which can utilize the high-temperature condensate heat generated by the steam heater to exchange heat with cold air, recover more than 10% of the steam condensate heat, and achieve energy-saving purposes.

[0004] The above-mentioned patent document discloses an air conditioning unit for processing cold air, but the air conditioning unit can not only process cold air but also process hot air (for example, hot air from outside in summer or air that has been heated in winter, which can easily cause the indoor temperature to quickly become unbalanced if directly discharged into the room).

[0005] However, the current air conditioning unit has limitations when processing hot air. When processing hot air, the current air conditioning unit often uses refrigeration components (such as evaporators) to directly cool the hot air. However, hot air is constantly flowing, and even if the refrigeration components work at high power, the cooling effect is still not ideal.

[0006] If multiple refrigeration components are installed, the cost is high, and the heat of the hot air itself is also wasted.

[0007] Therefore, how to solve the above-mentioned problems of the prior art has become the research topic of the utility model. UTILITY MODEL CONTENT

[0008] The utility model provides a kind of hot air treatment unit, to solve the technical problem proposed in the above background art.

[0009] To achieve the above purpose, the utility model adopts the technical scheme as follows: a kind of hot air treatment unit, including processing machine box, partition, first heat exchanger, surface cooler, fan and second heat exchanger;

[0010] The processing cabinet has a closed space, the partition plate is arranged in the processing cabinet and divides the closed space into a first flow channel chamber and a second flow channel chamber; the first flow channel chamber is arranged above the second flow channel chamber;

[0011] The surface of the partition plate has a flow-through opening, so that the first flow channel chamber and the second flow channel chamber are communicated;

[0012] The surface of the processing cabinet has an air inlet and an air outlet, the air inlet is communicated with the first flow channel chamber, and the air outlet is communicated with the second flow channel chamber;

[0013] In the closed space, hot air passes through the air inlet, the first flow channel chamber, the flow-through opening, the second flow channel chamber and the air outlet in sequence, and forms a hot air treatment flow channel;

[0014] Along the flow direction of the hot air in the hot air treatment flow channel, the first heat exchanger, the surface cooler, the fan and the second heat exchanger are arranged in sequence, and the surface cooler and the fan form a hot air first treatment system;

[0015] The first heat exchanger is arranged in the first flow channel chamber, and the second heat exchanger is arranged in the second flow channel chamber and located above the first heat exchanger;

[0016] Further comprising a first connecting pipe and a second connecting pipe, two ends of the first connecting pipe are respectively communicated with the bottom end of the first heat exchanger and the bottom end of the second heat exchanger; two ends of the second connecting pipe are respectively communicated with the top end of the first heat exchanger and the top end of the second heat exchanger;

[0017] The first heat exchanger, the first connecting pipe, the second connecting pipe and the second heat exchanger form a hot air second treatment system;

[0018] The hot air second treatment system is provided with a refrigerant; the refrigerant has a liquid state and a gas state; when the refrigerant is in the liquid state, the refrigerant acts in the first heat exchanger; in order to make the refrigerant enter the gas state, hot air is guided to contact the first heat exchanger, so that the refrigerant in the first heat exchanger evaporates;

[0019] When the refrigerant is in the gas state, the refrigerant is configured to rise through the second connecting pipe and act in the second heat exchanger; in order to make the refrigerant enter the liquid state, air passing through the first heat exchanger and the surface cooler is guided to contact the second heat exchanger, so that the refrigerant in the second heat exchanger condenses.

[0020] In the above scheme, the relevant contents are explained as follows:

[0021] In the above scheme, the refrigerant can be selected from the common freon.

[0022] The first heat exchanger and the second heat exchanger are connected, so that both of them have a certain pressure, so that the coolant, such as freon, is in a liquid state when it is not heated.

[0023] In the above scheme, the heat exchanger can be selected from the common copper tube heat exchanger, and the surface cooler can also be selected from the common surface cooler.

[0024] In the above scheme, the second heat exchanger is arranged in the second flow passage chamber and above the first heat exchanger. This arrangement is because the refrigerant has a liquid state and a gaseous state, and the gaseous state will rise, and the liquid state will fall. If the second heat exchanger and the first heat exchanger are both in the first flow passage chamber, the flow rate of the gaseous refrigerant will be affected, and the liquid refrigerant cannot flow from the second heat exchanger into the first heat exchanger.

[0025] In the above scheme, the air inlet and the air outlet should be arranged on the left side of the closed space, and the through hole is arranged on the right side of the surface of the partition plate. In this way, the hot air can flow fully in the closed space. The specific arrangement position can be referred to Figure 1 .

[0026] In the above scheme, the working principle of the first heat exchanger and the second heat exchanger can refer to the absorption heat pump.

[0027] Further technical solutions,

[0028] The second heat exchanger is arranged directly above the first heat exchanger.

[0029] The first connecting pipe is vertically arranged on the partition plate, and the second connecting pipe is vertically arranged on the partition plate.

[0030] With the above design, the flow path of the refrigerant between the second heat exchanger and the first heat exchanger is small, and the flow rate is not affected.

[0031] Further technical solutions,

[0032] The second heat exchanger is arranged opposite to the air outlet or on the side of the air outlet close to the through hole.

[0033] With the above design, the gas discharged from the air outlet passes through the second heat exchanger. If the second heat exchanger is arranged away from the air outlet, it is easy to cause the phenomenon that the fan directly discharges the gas from the air outlet.

[0034] Further technical solutions,

[0035] Viewed from a cross-sectional perspective, the hot air handling channel is U-shaped.

[0036] The above design allows for a large flow path of hot air within the hot air handling channel.

[0037] Further technical solutions,

[0038] The height of the surface cooler occupies at least half the height of the first flow channel chamber.

[0039] With the above design, hot air can fully contact the surface cooler when it passes through it. If the surface cooler is too small, hot air may be discharged directly from the outlet without being cooled by the surface cooler.

[0040] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0041] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0042] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0043] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0044] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0045] The working principle and advantages of this utility model are as follows:

[0046] In this invention, the heat of hot air can be efficiently utilized to achieve the purpose of cooling hot air by using a first hot air treatment system and a second hot air treatment system that work simultaneously. Specifically, hot air is directly guided into the air inlet, and then the hot air undergoes a cooling process under the action of the surface cooler and the fan. During the cooling process, since the hot air is in direct contact with the first heat exchanger, the hot air causes the refrigerant in the first heat exchanger to evaporate from liquid to gas. Then the gaseous refrigerant enters the second heat exchanger. That is, when the hot air comes into contact with the surface cooler, some of its heat is carried away by the first heat exchanger. In this way, the purpose of cooling the hot air can be fully achieved. Attached Figure Description

[0047] Appendix Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model.

[0048] In the above attached diagram: 1. Processing chassis; 2. Partition plate; 3. First heat exchanger; 4. Surface cooler; 5. Fan; 6. Second heat exchanger; 7. Flow port; 8. Air inlet; 9. Air outlet; 10. First connecting pipe; 11. Second connecting pipe. Detailed Implementation

[0049] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0050] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0051] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0052] See appendix Figure 1 As shown, a hot air handling unit includes a handling unit 1, a partition plate 2, a first heat exchanger 3, a surface cooler 4, a fan 5, and a second heat exchanger 6.

[0053] The processing chassis 1 has a closed space, and a partition plate 2 is installed inside the processing chassis 1 to divide the closed space into a first flow channel chamber and a second flow channel chamber; the first flow channel chamber is located above the second flow channel chamber;

[0054] The surface of the partition plate 2 has a flow port 7 to allow the first flow channel chamber to communicate with the second flow channel chamber;

[0055] The surface of the processing chassis 1 has an air inlet 8 and an air outlet 9. The air inlet 8 is connected to the first flow channel chamber, and the air outlet 9 is connected to the second flow channel chamber.

[0056] Within a closed space, hot air passes sequentially through the air inlet 8, the first flow channel chamber, the flow outlet 7, the second flow channel chamber, and the air outlet 9, forming a hot air processing flow channel.

[0057] Along the flow direction of hot air in the hot air handling channel, the first heat exchanger 3, the surface cooler 4, the fan 5 and the second heat exchanger 6 are arranged in sequence, and the surface cooler 4 and the fan 5 constitute the first hot air handling system.

[0058] The first heat exchanger 3 is disposed in the first flow channel chamber, and the second heat exchanger 6 is disposed in the second flow channel chamber and located above the first heat exchanger 3.

[0059] It also includes a first connecting pipe 10 and a second connecting pipe 11. The two ends of the first connecting pipe 10 are respectively connected to the bottom end of the first heat exchanger 3 and the bottom end of the second heat exchanger 6; the two ends of the second connecting pipe 11 are respectively connected to the top end of the first heat exchanger 3 and the top end of the second heat exchanger 6.

[0060] The first heat exchanger 3, the first connecting pipe 10, the second connecting pipe 11, and the second heat exchanger 6 constitute the second hot air processing system.

[0061] The second hot air processing system contains a refrigerant; the refrigerant has a liquid state and a gaseous state; when the refrigerant is in a liquid state, the refrigerant acts within the first heat exchanger 3; to allow the refrigerant to enter the gaseous state, hot air is guided to contact the first heat exchanger 3 so that the refrigerant within the first heat exchanger 3 evaporates;

[0062] When the refrigerant is in a gaseous state, the refrigerant is configured to rise through the second connecting pipe 11 and act on the second heat exchanger 6. In order to allow the refrigerant to enter the liquid state, the air passing through the first heat exchanger 3 and the surface cooler 4 is guided to contact the second heat exchanger 6 so that the refrigerant in the second heat exchanger 6 condenses.

[0063] In this invention, the refrigerant can be the commonly used Freon.

[0064] Since the first and second heat exchangers are connected, both can have a certain pressure, so that the coolant, such as Freon, is in a liquid state when not heated.

[0065] In this invention, the heat exchanger can be a common copper tube heat exchanger, and the surface cooler 4 can also be a common surface cooler.

[0066] In this invention, the second heat exchanger 6 is disposed in the second flow channel chamber and above the first heat exchanger 3. This arrangement is because the refrigerant has liquid and gaseous states. When it is in the gaseous state, it will rise, and when it is in the liquid state, it will fall. If the second heat exchanger 6 and the first heat exchanger 3 are both located in the first flow channel chamber, the flow rate of the gaseous refrigerant will be affected, and when it is in the liquid state, it cannot enter the first heat exchanger 3 from the second heat exchanger 6.

[0067] In this invention, the heat of hot air can be efficiently utilized to achieve the purpose of cooling hot air by using a first hot air treatment system and a second hot air treatment system that work simultaneously. Specifically, hot air is directly guided into the air inlet 8. Subsequently, the hot air undergoes a cooling process under the action of the surface cooler 4 and the fan 5. During this cooling process, since the hot air is in direct contact with the first heat exchanger 3, the hot air causes the refrigerant in the first heat exchanger 3 to evaporate from liquid to gas. Then, the gaseous refrigerant enters the second heat exchanger 6. That is, when the hot air comes into contact with the surface cooler 4, some of its heat will be carried away by the first heat exchanger 3. In this way, the purpose of cooling hot air can be fully achieved.

[0068] In some specific embodiments, the second heat exchanger 6 is positioned directly above the first heat exchanger 3;

[0069] The first connecting pipe 10 is vertically inserted through the partition plate 2; the second connecting pipe 11 is vertically inserted through the partition plate 2.

[0070] The second heat exchanger 6 needs to be placed above the first heat exchanger 3. Only in this way can the gaseous refrigerant enter the second heat exchanger 6 quickly and efficiently. If the entry speed is slow, the first heat exchanger 3 will carry some heat, resulting in low efficiency of the heat being absorbed by the first heat exchanger 3 from the hot air.

[0071] Therefore, both the first connecting pipe 10 and the second connecting pipe 11 are perpendicularly installed on the partition plate 2 in order to increase the entry speed.

[0072] With the above design, the refrigerant has a shorter flow path when it flows between the second heat exchanger 6 and the first heat exchanger 3, and the flow rate is not affected.

[0073] In some specific embodiments, the second heat exchanger 6 is positioned directly opposite the outlet 9 or on the side of the outlet 9 near the flow port 7.

[0074] The location of the air outlet 9 can be as shown in the figure, or the air inlet 8 and the air outlet 9 can be set symmetrically with the partition plate 2 as a reference.

[0075] With the above design, the gas discharged from the outlet 9 will pass through the second heat exchanger 6. If the second heat exchanger 6 is set off from the outlet 9, the fan 5 may directly discharge the gas from the outlet 9.

[0076] In some specific implementations, the hot air handling channel is U-shaped when viewed from a cross-sectional perspective.

[0077] The above design allows for a large flow path of hot air within the hot air handling channel.

[0078] In some specific embodiments, the height of the surface cooler 4 occupies at least half the height of the first flow channel chamber.

[0079] With the above design, hot air can fully contact the surface cooler 4 when it passes through the surface cooler 4. If the surface cooler 4 is too small, hot air may be discharged directly from the outlet 9 without being cooled by the surface cooler 4.

[0080] Working principle:

[0081] Hot air is directly guided into the air inlet 8. Then, the hot air comes into contact with the first heat exchanger 3. At this time, the hot air releases heat to the first heat exchanger 3, causing the refrigerant in the first heat exchanger 3 to evaporate from liquid to gas. That is, the hot air is cooled for the first time through the first heat exchanger 3.

[0082] After the first cooling, the hot air will be cooled a second time by the surface cooler 4. At this time, the temperature of the hot air has been reduced to a suitable temperature. Then, the fan 5 guides the air cooled a second time to the second heat exchanger 6.

[0083] As the refrigerant in the first heat exchanger 3 evaporates from liquid to gas, the gaseous air rises, and then rises through the second connecting pipe 11 and enters the second heat exchanger 6.

[0084] When the air, cooled for the second time, is guided to the second heat exchanger 6, it absorbs heat from the refrigerant vapor. The refrigerant vapor is affected by the treated cold air and condenses into refrigerant liquid. The refrigerant liquid flows to the first heat exchanger 3 under the influence of gravity, thus completing the refrigerant cycle between the first heat exchanger 3 and the second heat exchanger 6.

[0085] Meanwhile, the air that has passed through the second heat exchanger 6 will be discharged from the outlet 9.

[0086] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A hot air handling unit, characterized in that: It includes a processing chassis (1), a partition plate (2), a first heat exchanger (3), a surface cooler (4), a fan (5), and a second heat exchanger (6); The processing chassis (1) has a closed space. The partition plate (2) is disposed in the processing chassis (1) and divides the closed space into a first flow channel chamber and a second flow channel chamber. The first flow channel chamber is disposed above the second flow channel chamber. The first heat exchanger (3) and the surface cooler (4) are disposed in the first flow channel chamber. The fan (5) and the second heat exchanger (6) are disposed in the second flow channel chamber. A flow port (7) is provided on the partition plate (2) to connect the first flow channel chamber with the second flow channel chamber; The surface of the processing chassis (1) has an air inlet (8) and an air outlet (9), the air inlet (8) is connected to the first flow channel chamber, and the air outlet (9) is connected to the second flow channel chamber; Within the enclosed space, hot air passes sequentially through the air inlet (8), the first flow channel chamber, the flow port (7), the second flow channel chamber, and the air outlet (9), forming a hot air processing flow channel; Along the flow direction of the hot air handling channel, the first heat exchanger (3), the surface cooler (4), the fan (5) and the second heat exchanger (6) are arranged in sequence, and the surface cooler (4) and the fan (5) constitute the first hot air handling system; It also includes a first connecting pipe (10) and a second connecting pipe (11), the two ends of the first connecting pipe (10) being connected to the bottom end of the first heat exchanger (3) and the bottom end of the second heat exchanger (6) respectively; the two ends of the second connecting pipe (11) being connected to the top end of the first heat exchanger (3) and the top end of the second heat exchanger (6) respectively. The first heat exchanger (3), the first connecting pipe (10), the second connecting pipe (11), and the second heat exchanger (6) constitute a second hot air processing system.

2. The hot air handling unit according to claim 1, characterized in that: The second hot air processing system contains a refrigerant; The refrigerant has both liquid and vapor states; When the refrigerant is in liquid state, the refrigerant acts within the first heat exchanger (3); When the refrigerant is in a gaseous state, the refrigerant is configured to rise through the second connecting pipe (11) and act within the second heat exchanger (6); In order to allow the refrigerant to enter the liquid state, hot air that has passed through the first heat exchanger (3) and the surface cooler (4) is guided to contact the second heat exchanger (6) so that the refrigerant in the second heat exchanger (6) condenses.

3. The hot air handling unit according to claim 1, characterized in that: The second heat exchanger (6) is positioned directly above the first heat exchanger (3); The first connecting pipe (10) is vertically inserted through the partition plate (2); the second connecting pipe (11) is vertically inserted through the partition plate (2).

4. The hot air handling unit according to claim 1, characterized in that: The second heat exchanger (6) is positioned directly opposite the air outlet (9) or on the side of the air outlet (9) near the flow port (7).

5. The hot air handling unit according to claim 1, characterized in that: Viewed from a cross-sectional perspective, the hot air handling channel is U-shaped.

6. The hot air handling unit according to claim 1, characterized in that: The height of the surface cooler (4) occupies at least half the height of the first flow channel chamber.

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