Novel air conditioning unit

Abstract

The utility model discloses a novel air conditioning unit which comprises a unit body, the unit body sequentially comprises an air inlet section, a first primary and medium efficiency section, a fan section and an air outlet section, the air inlet section is provided with a first air valve, the novel air conditioning unit is characterized in that the fan section is further provided with a second air valve, when the first air valve is closed, the second air valve is opened, and when the first air valve is closed, the second air valve is opened. And the outdoor space is communicated with the fan section. The second air valve is arranged on the draught fan section, outdoor air is introduced into the draught fan section of the unit body from the second air valve through the draught fan section to be exhausted into a room when the draught fan section is in a low-temperature season or region, so that low-temperature air is kept away from the coil pipe, the coil pipe is prevented from being frozen, a surface air cooler is prevented from being frozen to crack, meanwhile, air can be introduced into the room, and the service life of the air conditioner is prolonged. And indoor negative pressure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning equipment, in particular to a new type of air conditioning unit. Background Art

[0002] In cold weather, the outdoor temperature is often too low to freeze the heating coil, resulting in the interlocking shutdown of the fresh air unit or the air conditioning unit according to the program, causing the building to lose the function of introducing fresh air. Fresh air can only enter through a small amount of infiltration through doors and windows, resulting in a headache-causing lack of oxygen indoors. Since the exhaust system can continue to operate regardless of the decrease in outdoor temperature, when a large amount of indoor turbid gas is continuously exhausted while fresh air cannot enter in cold weather, the indoor negative pressure situation is aggravated, reducing the comfort level.

[0003] The existing anti-freezing method often adopted is a two-pipe air conditioning water system. That is, when the air temperature T1 after the preheating section coil is monitored by a temperature sensor or an anti-freezing switch and is lower than 5°C, the controller will interlock to stop the operation of the fresh air unit and close the fresh air valve. In order to prevent the cold air from infiltrating and freezing the coil, the bypass valve at both ends of the electric control valve in the air conditioning water system can be opened to maintain a certain flow rate of the circulating water volume in the coil.

[0004] However, the above existing technology has the following defects. When the above anti-freezing method is actually used, the reliability is poor, and it cannot make the fresh air or the air conditioning unit operate normally, and can only play a safety protection role. For a variable flow system in which the water system connects multiple fresh air units and air conditioning units, even if the electric control valve is changed to manual adjustment and set to the maximum opening, due to the change of air temperature and the fluctuation of the external network, the hydraulic condition of the coil bundle will be unbalanced, and the possibility of freezing still exists. Content of the Utility Model

[0005] Therefore, in order to solve the above deficiencies, the utility model provides a new type of air conditioning unit here, which includes a unit body. The unit body sequentially includes an air inlet section, a first primary and intermediate efficiency section, a fan section, and an air outlet section. A first air valve is provided in the air inlet section, and a second air valve is also provided in the fan section. When the first air valve is closed, the second air valve is opened to connect the outdoor with the fan section.

[0006] In the utility model, by providing a second air valve in the fan section, in seasons or regions with lower temperatures, the outdoor air is introduced from the second air valve into the fan section of the unit body and discharged indoors, so that the low-temperature air avoids the coil, thereby preventing the coil from freezing, avoiding the freezing and cracking of the surface cooler, and at the same time, air can be introduced into the room to avoid causing indoor negative pressure.

[0007] Furthermore, the air conditioning unit further includes a fresh air module, and the fresh air module is connected to the fan section of the air conditioning unit to filter the outdoor air introduced from the second air valve.

[0008] By adding a fresh air module to filter the outdoor air introduced from the second air valve in the fan section, the quality of the introduced air is guaranteed.

[0009] Furthermore, the fresh air module is integrally arranged outside the unit body and is connected to the second air valve through an air duct.

[0010] Placing the fresh air module outside can facilitate installation, use, and maintenance without modifying the original design of the modular air conditioner unit.

[0011] Furthermore, the fresh air module is integrally arranged inside the unit body and is located between the fan section and the air outlet section.

[0012] Furthermore, a air distribution section is provided between the fresh air module and the fan section. The air distribution section is respectively connected to the fan section and the fresh air module. A third air valve is provided outside the air distribution section, and a fourth air valve is provided at the connection between the air distribution section and the fresh air module;

[0013] When the first air valve is closed, the second air valve and the fourth air valve are opened, and the third air valve is closed.

[0014] Fresh air and return air enter and exit through different air vents according to the season, avoiding freezing of the surface cooler caused by fresh air passing through the surface cooler in winter. Through automatic control, it is convenient to operate. It does not increase the height of the unit and does not affect the installation of pipelines on the top of the unit.

[0015] Furthermore, the filtration grade of the fresh air module is selected as medium and low efficiency.

[0016] The utility model has the following advantages:

[0017] In this utility model, by setting a second air valve in the fan section, when in a season or region with relatively low temperature, the outdoor air is introduced from the second air valve into the fan section of the unit body and then discharged into the room, so that the low-temperature air avoids the coil, thereby preventing the coil from freezing, avoiding cracking of the surface cooler, and at the same time, air can be introduced into the room to avoid causing negative pressure in the room. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the air conditioner unit in Embodiment 2;

[0019] Figure 2 is Figure 1 the schematic diagram of the summer operation of the air conditioner unit shown;

[0020] Figure 3 is Figure 1 the schematic diagram of the winter operation of the air conditioner unit shown;

[0021] Figure 4 is a schematic structural diagram of the air conditioner unit in Embodiment 3;

[0022] Figure 5 is Figure 4 the schematic diagram of the air conditioner unit in summer operation as shown;

[0023] Figure 6 is Figure 4 the schematic diagram of the air conditioner unit in winter operation as shown;

[0024] In the figure:

[0025] 100, the unit body; 110, the air inlet section; 120, the first primary and intermediate efficiency section; 130, the fan section; 140, the air outlet section; 150, the air distribution section; 160, the second primary and intermediate efficiency section;

[0026] 200, the primary and intermediate efficiency air supply box;

[0027] 300, the first air valve;

[0028] 400, the second air valve;

[0029] 500, the third air valve;

[0030] 600, the fourth air valve. Detailed implementation manners

[0031] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0032] 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 actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0033] As described in the background art, in actual use, the existing anti-freezing methods have poor reliability and cannot enable the fresh air or the air conditioner unit to operate normally, and can only play a safety protection role. For a variable flow system in which the water system connects multiple fresh air units and air conditioner units, even if the electric control valve is changed to manual adjustment and set to the maximum opening, due to the change of temperature and the fluctuation of the external network, the hydraulic condition of the coil tube bundle will be unbalanced, and the possibility of freezing still exists.

[0034] Embodiment 1:

[0035] Therefore, to solve the above technical problems existing in the prior art, the present embodiment provides a new type of air conditioning unit. The air conditioning unit includes a unit body 100, and the unit body sequentially includes an air inlet section 110, a first primary and intermediate efficiency section 120, a fan section 130, and an air outlet section 140. A first air valve 300 is provided in the air inlet section, and a second air valve 400 is further provided in the fan section. When the first air valve is closed, the second air valve is opened to connect the outdoor with the fan section.

[0036] The principle of this embodiment is as follows:

[0037] When the ambient temperature is higher than the preset temperature, the unit body operates normally, and the fan in the fan section operates to drive the outside air to enter the first primary and intermediate efficiency section through the air inlet section for treatment, and finally discharged into the room through the air outlet section.

[0038] When the ambient temperature is lower than the preset temperature, the first air valve is closed, and the second air valve is opened to introduce outdoor air into the fan section, and the fresh air is introduced into the room through the air outlet section that communicates with the room in the fan section.

[0039] In this utility model, a second air valve is provided in the fan section. When the temperature is relatively low in seasons or regions, the outdoor air is introduced from the second air valve into the fan section of the unit body and then discharged into the room, so that the low-temperature air avoids the coil, thereby preventing the coil from freezing and avoiding cracking of the surface cooler. At the same time, air can also be introduced into the room to avoid creating negative pressure in the room.

[0040] In this embodiment, the air conditioning unit further includes a fresh air module. The fresh air module is connected to the fan section of the air conditioning unit, and the outdoor air introduced from the second air valve is filtered through the fresh air module.

[0041] By adding a fresh air module to filter and process the outdoor air introduced from the second air valve in the fan section, the quality of the introduced air is guaranteed.

[0042] In this embodiment, the indoor is the interior of the target space, including but not limited to factories, warehouses, etc., and the outdoor is all other spaces outside the target space, including but not limited to air conditioning unit rooms, the external environment, etc.

[0043] Embodiment 2:

[0044] The present embodiment provides one of the solutions of the above embodiment. As Figure 1 shown, the fresh air module is integrally arranged outside the unit body and connected to the second air valve through an air duct.

[0045] In this embodiment, the fresh air module can be selected as the primary and intermediate efficiency air supply box 200.

[0046] As Figure 2As shown, when the ambient temperature is higher than the preset temperature, the second air valve is closed, the first air valve is opened, and the unit body operates normally.

[0047] like Figure 3 As shown, when the environment is lower than the preset temperature, the first air valve is closed and the second air valve is opened. The fan section drives air to enter from the primary and secondary efficiency air supply boxes. After the air is filtered by the primary and secondary efficiency air supply boxes, it is sent to the fan section through the air duct and finally discharged from the air outlet section.

[0048] In this embodiment, the primary and secondary efficiency air supply boxes are externally arranged, so that the original design of the combined air conditioning unit can be kept unchanged, and installation, use and maintenance are convenient.

[0049] In this embodiment, the primary and medium efficiency air supply boxes are devices in the prior art that can drive air flow and filter the air. In addition to selecting primary and medium efficiency air supply boxes, the fresh air module externally disposed on the unit body in this embodiment can also select medium and high efficiency air supply boxes or other devices that can filter the air according to actual needs.

[0050] Embodiment 3:

[0051] This embodiment provides another solution of embodiment 1, such as Figure 4 As shown, different from Example 2, the fresh air module in this embodiment is arranged as a whole in the unit body, and the fresh air module is arranged between the fan section and the air outlet section.

[0052] In this embodiment, the fresh air module selects the second primary and secondary efficiency section 160 having the same structure as the first primary and secondary efficiency section or the primary and secondary efficiency air supply box.

[0053] When the ambient temperature is higher than the preset temperature, the second air valve is closed, the unit body operates normally, and fresh air can be input into the room through the second primary and secondary effect section and the air outlet section in sequence;

[0054] When the ambient temperature is lower than the preset temperature, the second air valve opens and the second primary and secondary effect section operates, driving the outdoor air from the first air valve into the fan section, and then processed by the second primary and secondary effect section, and finally discharged to the outdoors from the air outlet section.

[0055] In this embodiment, the fresh air module is built-in, which does not increase the height of the unit and does not affect the installation of the pipeline on the top of the unit. And it is easy to operate through automatic control.

[0056] However, if fresh air is also input into the room through the air outlet section in summer, the fresh air introduced by the unit body will pass through the second primary and secondary effect section, which will affect the air output and increase energy consumption.

[0057] Therefore, in this embodiment, a air distribution section 160 is further provided between the fresh air module and the fan section. The air distribution section is respectively communicated with the fan section and the fresh air module. A third air valve 500 is provided outside the air distribution section, and a fourth air valve 600 is provided at the connection between the air distribution section and the fresh air module;

[0058] When the first air valve is closed, the second air valve and the fourth air valve are opened, and the third air valve is closed.

[0059] As Figure 5 shown, when the ambient temperature is higher than the preset temperature, the second air valve and the fourth air valve are closed, the first air valve and the third air valve are opened, and the return air generated by the unit body is directly discharged into the room through the third air valve; As Figure 6 shown, when the ambient temperature is lower than the preset temperature, the second air valve and the fourth air valve are opened, the first air valve and the third air valve are closed, the fan operates, the outdoor air is introduced through the second air valve, and after passing through the air distribution section and the second primary and secondary efficient sections, it is discharged into the room from the air outlet section.

[0060] In this embodiment, the fresh air and the return air enter and exit from different air outlets according to the season, avoiding the freezing of the surface cooler caused by the fresh air passing through the surface cooler in winter, not affecting the air output, and not increasing the energy consumption.

[0061] 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 apparent 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 the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new type of air conditioning unit, including the unit body, the unit body successively includes an air inlet section, a first primary and intermediate efficiency section, a fan section and an air outlet section, and a first air valve is provided in the air inlet section, characterized in that, A second air valve is also provided in the fan section. When the first air valve is closed, the second air valve is opened to connect the outdoor with the fan section.

2. A novel air-conditioning unit according to claim 1, characterized in that, The air conditioning unit further includes a fresh air module, which is connected to the fan section of the air conditioning unit, and the outdoor air introduced from the second air valve is filtered through the fresh air module.

3. A novel air-conditioning unit according to claim 2, characterized in that, The fresh air module is integrally arranged outside the unit body and is connected to the second air valve through an air duct.

4. A novel air-conditioning unit according to claim 2, characterized in that, The fresh air module is integrally arranged inside the unit body, and the fresh air module is arranged between the fan section and the air outlet section.

5. A novel air-conditioning unit according to claim 4, characterized in that, A air distribution section is also provided between the fresh air module and the fan section. The air distribution section is respectively connected to the fan section and the fresh air module. A third air valve is arranged outside the air distribution section, and a fourth air valve is arranged at the connection between the air distribution section and the fresh air module; When the first air valve is closed, the second air valve and the fourth air valve are opened, and the third air valve is closed.

6. A novel air conditioning unit according to claim 2, characterized in that, The filtration grade of the fresh air module is selected as medium and low efficiency.

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