Ventilation pipe and fresh air air conditioner

Abstract

The present application relates to the technical field of air conditioning, and discloses a ventilation pipe and a fresh air air conditioner, wherein the ventilation pipe comprises a first tube body and a second tube body, wherein the first tube body comprises a first air inlet and a first air outlet, and the second tube body passes through the first tube body, wherein the second tube body comprises a second air inlet and a second air outlet, and the first airflow direction in the first tube body is opposite to the second airflow direction in the second tube body. The present invention integrates the indoor exhaust air and the fresh air pipelines, and when the fresh air is turned on, the introduced outdoor fresh air passes through the ventilation pipe, and the heat of the indoor exhaust air is used to perform heat exchange on the fresh air, so that the introduced outdoor air is close to the indoor temperature, and energy recovery is achieved, and no additional heat exchange structure is required for the fresh air and the exhaust air, thereby simplifying the air conditioning structure, effectively reducing energy loss, and improving the energy recovery rate of the air conditioning.

Description

Technical Field

[0001] The present application generally relates to an air conditioner, and more specifically, to a ventilation duct and a fresh air air conditioner. Background Art

[0002] In order to promote the circulation of indoor air, the application of fresh air devices is becoming more and more widespread, and they are combined with various air conditioners to achieve air treatment and heat exchange. Fresh air devices introduce fresh air from the outside and mix it with indoor air. When fresh air air conditioners use fresh air ventilation systems to ventilate the room, due to the temperature difference between indoor and outdoor, directly introducing fresh air will increase / decrease the indoor temperature, thereby increasing the energy consumption of the air conditioner. When the indoor air is discharged to the outside, the heat of the indoor air is also directly discharged, and cannot be directly recycled.

[0003] In order to reduce heat loss in the heat exchange process, existing fresh air air conditioners will exchange heat for fresh air and indoor exhaust air separately. Two heat exchange structures need to be set at the air inlet position and the exhaust position respectively, which occupies the internal space of the air conditioner, has a complex structure, and leads to increased energy consumption.

[0004] In view of this, it is urgent to improve the structure of the existing fresh air air conditioner to reduce energy loss and simplify the structure. Summary of the invention

[0005] A main purpose of the present application is to overcome at least one defect of the above-mentioned prior art and provide a ventilation tube, comprising:

[0006] A first tube body includes a first air inlet and a first air outlet; and

[0007] The second tube body passes through the first tube body, the second tube body includes a second air inlet and a second air outlet, and the first air flow direction in the first tube body is opposite to the second air flow direction in the second tube body.

[0008] According to an embodiment of the present invention, the first airflow and the second airflow perform heat exchange through the tube wall of the second tube body.

[0009] According to one embodiment of the present invention, the second tube body includes a heat exchange section and an air outlet section, the heat exchange section is arranged inside the first tube body, the heat exchange section is provided with the second air inlet, and the air outlet section is arranged outside the first tube body, the air outlet section is provided with the second air outlet.

[0010] Furthermore, in the above embodiment, the heat exchange section extends in an S-shape, a spiral shape or a U-shape along the length direction of the first tube body.

[0011] Or further, in the above embodiment, the length of the pipeline of the heat exchange section is more than twice the length of the first pipe body.

[0012] Or further, in the above embodiment, the second tube body further has an air inlet section, the air inlet section is in a bent shape, the air inlet section passes through the first tube body, and the second air inlet is arranged at the end of the air inlet section.

[0013] According to an embodiment of the present invention, a sleeve for fixing to a hole in a wall is provided on the outer periphery of the first tube.

[0014] The present invention also provides a fresh air air conditioner, comprising an air intake system, an air outlet system and a ventilation pipe of the above structure placed between the air intake system and the air outlet system, wherein the first air inlet is connected to the air outlet end of the air intake system, the first air outlet is connected to the indoor room, the second air inlet is connected to the indoor room, and the second air outlet is connected to the air inlet end of the air outlet system.

[0015] According to an embodiment of the present invention, the air intake system includes an air inlet pipe and an air inlet fan which are sequentially connected along the air flow direction, and a volute of the air inlet fan forms the air outlet end.

[0016] According to an embodiment of the present invention, the air outlet system includes an air outlet fan and an exhaust pipe which are sequentially connected along the air flow direction, and the second air inlet is connected to the air inlet end of the air outlet fan.

[0017] It can be seen from the above technical scheme that the advantages and positive effects of the ventilation duct and fresh air air conditioner of the present application are: by setting the indoor exhaust and fresh air pipelines as one, the outdoor fresh air is introduced through the ventilation duct when the fresh air is turned on, and the heat of the indoor exhaust air is used to exchange heat with the fresh air, so that the introduced outdoor air is close to the indoor temperature, thereby realizing energy recovery. There is no need to add additional heat exchange structures to the fresh air and exhaust air, which simplifies the air conditioning structure, effectively reduces energy loss, and improves the energy recovery rate of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 is a cross-sectional view of a ventilation pipe according to an exemplary embodiment.

[0021] Figure 2 is perpendicular to Figure 1Cross-sectional view of the vent pipe in the mid-section direction.

[0022] Figure 3 The figure is a front view of a fresh air air conditioner according to an exemplary embodiment.

[0023] Figure 4 The figure is a top view of a fresh air air conditioner according to an exemplary embodiment.

[0024] Figure 5 yes Figure 3 Longitudinal section of .

[0025] Figure 6 yes Figure 3 Right view of .

[0026] The reference numerals are described as follows:

[0027] The first tube body 11, the first air inlet 111, the first air outlet 112, the sleeve 12, the heat exchange section 21, the air outlet section 22, the air inlet section 23, the second air inlet 211, the second air outlet 212, the wall 100, the air inlet pipe 201, the air inlet fan 202, the filter 203, the exhaust pipe 301, and the air outlet fan 302. Specific embodiments

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0029] In order to overcome the problem of high energy consumption of fresh air treatment in the prior art, such as Figure 1 and Figure 2 As shown, the present application provides a ventilation pipe, including a first tube body 11 and a second tube body. The first tube body 11 includes a first air inlet 111 and a first air outlet 112. The second tube body passes through the first tube body 11, and the second tube body includes a second air inlet 211 and a second air outlet 212. The first airflow direction in the first tube body 11 is opposite to the second airflow direction in the second tube body.

[0030] The technical solution of the present invention is to integrate the indoor exhaust and fresh air pipelines, and when the fresh air is turned on, the outdoor fresh air is introduced through the ventilation pipe, and the heat of the indoor exhaust air is used to exchange heat with the fresh air, so that the introduced outdoor air is close to the indoor temperature, thereby realizing energy recovery. There is no need to add additional heat exchange structures to the fresh air and exhaust air, thus simplifying the air-conditioning structure, effectively reducing energy loss, and improving the energy recovery rate of the air-conditioning.

[0031] It can be understood that the second tube body is arranged inside, and the second airflow inside should be used as a heat exchange medium to exchange heat with the first airflow in the second tube body.

[0032] In a preferred embodiment, the first airflow and the second airflow are heat exchanged through the tube wall of the second tube body. In this embodiment, the tube wall of the second tube body serves as the heat exchange surface of the first airflow and the second airflow to achieve the heat exchange effect of the two airflows. Specifically, the outer surface area of ​​the tube body of the second tube body should be increased as much as possible. This can be achieved by extending the length of the second tube body, setting a small-sized second tube body, or increasing the number of second tube bodies, so that the second airflow can achieve a higher heat exchange rate as much as possible after being discharged from the second air outlet 212, so that the temperature of the second airflow is closer to the temperature of the first airflow. The first airflow can be the introduced fresh air, and the second airflow can be the indoor air, thereby reducing the energy consumption of the air conditioner.

[0033] In a preferred embodiment, the second tube body includes a heat exchange section 21 and an air outlet section 22, wherein the heat exchange section 21 is arranged inside the first tube body 11, and the heat exchange section 21 is provided with a second air inlet 211, and the air outlet section 22 is arranged outside the first tube body 11, and the air outlet section 22 is provided with a second air outlet 212. In this embodiment, the second tube body is configured as two parts, wherein the heat exchange section 21 is used to achieve heat exchange, and the air outlet section 22 is used to achieve rapid output of the second airflow, thereby alleviating the internal air pressure of the heat exchange section 21. As mentioned above, in order to fully exchange heat, the second tube body has a smaller tube body size, and the corresponding cross-sectional area is also smaller. Therefore, it can be known that the airflow pressure inside the second tube body will be relatively large, and in order to maintain the air outlet efficiency and reduce the energy efficiency required for air outlet, the air outlet section 22 needs to ensure that the second airflow passes quickly, thereby alleviating the air outlet pressure of the heat exchange section 21.

[0034] Furthermore, the heat exchange section 21 is extended in an S-shape, spiral shape or U-shape along the length direction of the first tube body 11. In this embodiment, in order to increase the heat exchange area of ​​the heat exchange section 21 and improve the heat exchange effect, the heat exchange section 21 is bent and coiled in a limited cavity, and at the same time, the direction of the first airflow should be ensured to be consistent with the characteristics of the gas flow as much as possible. Here, the heat exchange section 21 can be extended in the above-mentioned S-shape, spiral shape or U-shape. It can be understood that one, two or three of the above-mentioned three shapes can also be used in combination, and the above-mentioned structures can also be combined and changed in space to generate similar structures to increase the heat exchange area, avoid turbulence with low stability of the gas, and prevent turbulence from affecting subsequent exhaust, thereby increasing the energy consumption of the fan and the like.

[0035] Or further, the length of the pipe of the heat exchange section 21 is more than twice the length of the first tube body 11. In this embodiment, the length of the heat exchange section 21 is optimized. The increase in the length of the pipe of the heat exchange section 21 can increase the contact area between the second airflow and the first airflow, and the airflow fluidity is stronger. In order to maximize the contact between the first airflow and the second airflow, the length of the heat exchange section 21 is at least twice the length of the first tube body 11. It should be understood that the length of the pipe of the heat exchange section 21 is only one way to improve the heat exchange efficiency. Specifically, it can also be combined and coordinated with the cross-sectional size of the heat exchange section 21.

[0036] Specifically, the first air inlet 111 is disposed on one lateral side of the first tube body 11, and the second tube body passes through both ends along the length direction of the first tube body 11. The air inlet position of the first airflow and the air outlet position of the second airflow are separated for easy installation and disassembly.

[0037] Or further, if Figure 1 and Figure 2 As shown, the second tube body further has an air inlet section 23, which is in a bent shape and passes through the first tube body 11. The second air inlet 211 is provided at the end of the air inlet section 23. In this embodiment, in addition to allowing the second airflow to enter, the air inlet section 23 passes through the first tube body 11 to facilitate maintenance. This is because if the vent pipe is used in an air conditioner, the vent pipe should pass through a wall 100 or a window, etc. Figure 5 and Figure 6 As shown, the interior of the vent pipe needs to be connected to the components inside the air conditioner, so the vent pipe is passed out to facilitate disassembly by maintenance personnel. Specifically, the air inlet section 23 can be set to a handle shape, and is preferably set to an arc shape, which conforms to the gas flow direction and is convenient for manual operation. Moreover, the air inlet section 23 can be combined with the structure of the aforementioned implementation, and can be formed by extending outward from the end of the heat exchange section 21, and can be obtained by winding and bending the structure of the heat exchange section 21. It can be imagined that the angle and shape of the bend can be distinguished from the heat exchange section 21. The bending of the heat exchange section 21 is for the purpose of increasing the length of the pipeline, and the bending of the air inlet section 23 is for the purpose of improving the convenience of use.

[0038] Or further, the outer periphery of the first tube body 11 is provided with a sleeve 12 for fixing with the perforation of the wall 100. In this embodiment, the sleeve 12 is provided on the outer periphery of the first tube body 11, and the sleeve 12 can be pre-embedded in the wall. The sleeve 12 not only protects the first tube body 11 and prevents the first tube body 11 from being damaged due to corrosion or moisture, but also blocks the gas heat of the first tube body 11 from diffusing outward, prevents thermal damage to the perforation of the wall 100, and improves the stability and service life of the overall system. Moreover, the sleeve 12 also has a positioning function for the first tube body 11, alleviates the gas impact and shaking of the first tube body 11, and can also reduce the noise generated by the gas impact of the first tube body 11.

[0039] like Figure 3-6 As shown, the present application also discloses a fresh air air conditioner, including an air intake system, an air outlet system and a ventilation pipe of the aforementioned structure placed between the air intake system and the air outlet system, the first air inlet 111 is connected to the air outlet end of the air intake system, the first air outlet 112 is connected to the indoor room, the second air inlet 211 is connected to the indoor room, and the second air outlet 212 is connected to the air inlet end of the air outlet system.

[0040] When the fresh air air conditioner performs air exchange, the outdoor fresh air is introduced into the room through the air inlet pipe 201, and the indoor circulating air is discharged to the outside through the exhaust pipe 301, so as to perform air circulation. In the process of introducing outdoor air into the room and discharging indoor air to the outside, there is a certain temperature difference between the indoor and outdoor air. The present application combines the exhaust pipe 301 and the air inlet pipe 201 on a ventilation pipe, so that the fresh air introduced in the air circulation process and the exhausted air can exchange heat in the ventilation pipe, so that the temperature of the introduced fresh air is closer to the temperature of the indoor air, thereby reducing the energy consumption of the air conditioner. Specifically, the air intake system is used to provide negative pressure for the fresh air to allow the fresh air to enter the room, and the air outlet system is used to discharge the indoor air to the outside.

[0041] In another preferred embodiment, the air intake system includes an air intake pipe 201 and an air intake fan 202 which are sequentially connected along the air flow direction, and the volute of the air intake fan 202 forms an air outlet. In this embodiment, the air intake fan 202 of the air intake system can be set as a centrifugal fan, which is the power source for outdoor air to enter the room. The outdoor fresh air enters the volute under the negative pressure of the air intake fan 202, and then enters the first pipe body 11.

[0042] In another preferred embodiment, the first tube body 11 passes through the air-conditioning housing, the air inlet port of the air inlet pipe 201 is fixedly connected to the passing end of the first tube body 11, the outer peripheral surface of the air inlet pipe 201 is provided with an air inlet hole, and an air inlet cavity is formed between the air inlet pipe 201 and the second tube body. In this embodiment, the air inlet pipe 201 is connected to the outer end of the first tube body 11, which reduces the branching of the pipeline and the occupied space. Specifically, the air inlet hole of the air inlet pipe 201 is arranged along the outer peripheral surface of the air inlet pipe 201, and a filter screen 203 can be arranged on the inner side of the air inlet pipe 201. The filter screen 203 should fit the shape of the air inlet pipe 201. In this embodiment, the filter screen 203 is arranged in a cylindrical shape. Specifically, a filter screen protective cover is arranged at the filter screen 203 to play a protective role. After the outdoor air enters, the filter screen 203 can prevent large particles of debris and insects from entering the room with the air flow. The air in the second tube body has been heat exchanged and may have some residual heat. At this time, the outdoor air enters the air inlet pipe 201 and can also exchange heat with the residual heat of the indoor air in the second tube body, making full use of the residual heat of the air in the second tube body. Specifically, the second tube body includes a heat exchange section 21 and an air outlet section 22. At this time, the air enters and exchanges heat with the indoor exhaust air in the air outlet section 22.

[0043] In another preferred embodiment, the air outlet system includes an air outlet fan 302 and an exhaust pipe 301 which are sequentially connected along the air flow direction, and the second air inlet 211 is connected to the air inlet end of the air outlet fan 302. Specifically, the air outlet fan 302 is a power source for exhausting indoor air to the outside. Under the action of the air outlet fan 302, the indoor air passes through the heat exchange section 21 and the air outlet section 22 of the second pipe body and is then discharged to the outside.

[0044] like Figure 2 As shown, when the air conditioner turns on the fresh air function, the air inlet fan 202 and the exhaust fan operate simultaneously, the solid arrow indicates the indoor air flow direction, and the dotted arrow indicates the outdoor fresh air flow direction. The fresh air enters the air inlet pipe 201 through the filter 203, is introduced by the air inlet fan 202 and sent to the first tube body 11, at which time the exhaust fan 302 draws the indoor air into the second tube body, and the outdoor air and the indoor air cross each other in the tube wall of the first tube body 11 to exchange heat, and then the outdoor fresh air enters the room, at which time the outdoor air temperature entering the room is close to the indoor air temperature, thereby reducing indoor energy loss.

[0045] It can be seen from the above technical scheme that the advantages and positive effects of the fresh air air conditioner of the present application are: by setting the indoor exhaust and fresh air pipelines as one, the outdoor fresh air is introduced through the ventilation pipe when the fresh air is turned on, and the heat of the indoor exhaust air is used to exchange heat with the fresh air, so that the introduced outdoor air is close to the indoor temperature, thereby realizing energy recovery. There is no need to add additional heat exchange structures to the fresh air and exhaust air, which simplifies the air conditioning structure, effectively reduces energy loss, and improves the energy recovery rate of the air conditioner.

[0046] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may 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 the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A ventilation tube, characterized in that: include: A first tube body (11), comprising a first air inlet (111) and a first air outlet (112), the first tube body (11) being in a long cylindrical structure, the first air inlet (111) being arranged on a lateral side of the first tube body (11); and A second tube body passes through the first tube body (11), and the first air inlet (111) faces the outer tube wall of the second tube body, the second tube body comprises a second air inlet (211) and a second air outlet (212), and a first air flow direction in the first tube body (11) is opposite to a second air flow direction in the second tube body; The second tube body further comprises a heat exchange section (21) and an air outlet section (22), and the heat exchange section (21) extends in an S-shaped, spiral or U-shaped coil along the length direction of the first tube body (11).

2. The vent pipe according to claim 1, characterized in that The first airflow and the second airflow perform heat exchange through the tube wall of the second tube body.

3. The vent pipe according to claim 1, characterized in that The heat exchange section (21) is arranged inside the first tube body (11), and the heat exchange section (21) is provided with the second air inlet (211); the air outlet section (22) is arranged outside the first tube body (11), and the air outlet section (22) is provided with the second air outlet (212).

4. The vent pipe according to claim 1, characterized in that The length of the pipeline of the heat exchange section (21) is more than twice the length of the first pipe body (11).

5. The vent pipe according to claim 1, characterized in that The second tube body further comprises an air inlet section (23), the air inlet section (23) is in a bent shape, the air inlet section (23) passes through the first tube body (11), and the second air inlet (211) is arranged at the end of the air inlet section (23).

6. The vent pipe according to any one of claims 1 to 5, characterized in that: The outer periphery of the first tube body (11) is provided with a sleeve (12) for being fixed to the wall (100) through a hole.

7. A fresh air air conditioner, characterized in that: The invention comprises an air intake system, an air outlet system and a ventilation pipe as described in any one of claims 1 to 6 disposed between the air intake system and the air outlet system, wherein the first air inlet (111) is connected to an air outlet end of the air intake system, the first air outlet (112) is connected to a room, the second air inlet (211) is connected to a room, and the second air outlet (212) is connected to an air inlet end of the air outlet system.

8. The fresh air air conditioner according to claim 7, characterized in that: The air intake system comprises an air inlet pipe (201) and an air inlet fan (202) which are sequentially connected along the air flow direction, and the volute of the air inlet fan (202) forms the air outlet end.

9. The fresh air air conditioner according to claim 7, characterized in that: The air outlet system comprises an air outlet fan (302) and an exhaust pipe (301) which are connected in sequence along the air flow direction, and the second air inlet (211) is connected to the air inlet end of the air outlet fan (302).

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