CN218096324U - Air conditioning unit - Google Patents
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- CN218096324U CN218096324U CN202222552388.9U CN202222552388U CN218096324U CN 218096324 U CN218096324 U CN 218096324U CN 202222552388 U CN202222552388 U CN 202222552388U CN 218096324 U CN218096324 U CN 218096324U
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Abstract
The utility model discloses an air conditioning unit relates to the air conditioning field for reduce air conditioning unit's energy consumption. The air conditioning unit comprises a first air inlet section, a second air inlet section, a surface cooler assembly and an air feeder section. The first air inlet section comprises a first air inlet and a first air outlet which are communicated with each other through fluid. The second air inlet section comprises a second air inlet and a second air outlet which are communicated with each other through fluid; the second air inlet section is switched over with the first air inlet section between connection and disconnection. The surface cooler assembly is arranged at the downstream of the first air inlet section and the second air inlet section. The air blower section comprises a third air inlet and a third air outlet which are communicated with each other through fluid; the third air inlet is positioned at the downstream of the surface cooler assembly; and the fluid conveyed by the first air inlet section and the second air inlet section enters the third air inlet after passing through the surface air cooler assembly. Above-mentioned technical scheme has realized that the air inlet temperature is adjusted and control more easily, and air conditioning unit's energy consumption is lower.
Description
Technical Field
The utility model relates to an air conditioner field, concretely relates to air conditioning unit.
Background
In recent years, nuclear power is used as a clean and stable energy source, and the electricity consumption is continuously improved in the whole society. According to statistics, as long as 12 months in 2021, 53 nuclear power units can be operated in China, the total installed capacity of the nuclear power is 5465 ten thousand kilowatts, the total installed capacity accounts for 5.02% of the national cumulative power generation, and compared with the global nuclear power generation, the total installed capacity accounts for 10% and has huge development potential. Under the background, by 2025 years, nuclear power is estimated to be about 7000 million kilowatts in the transport and installation machine in China; by 2030, the installed capacity of nuclear power reaches 1.2 hundred million kilowatts, and the power generation amount of the nuclear power accounts for about 8 percent of the national power generation amount. Meanwhile, the requirements of the air conditioning unit for nuclear power are increasing day by day, due to the special working environment of the nuclear power station, the requirements on the performance, stability, shock resistance and the like of the air conditioning unit are higher than those of a daily commercial air conditioning unit, and the air conditioning unit operates all year round and has certain targets and requirements on green energy conservation.
The inventor finds that at least the following problems exist in the prior art: the combined air conditioning unit is an important component of the air conditioning unit, air is treated by the surface air cooler and then sent into a room, the temperature of the air cannot meet the requirement, and therefore other operations are required to be added, such as heating the air, so that the temperature of the air meets the use requirement, and the energy consumption of the air conditioning unit is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air conditioning unit for reduce air conditioning unit's energy consumption.
An embodiment of the utility model provides an air conditioning unit, include:
the first air inlet section comprises a first air inlet and a first air outlet which are communicated by fluid; the first air inlet is used for receiving fresh air;
the second air inlet section comprises a second air inlet and a second air outlet which are communicated with each other through fluid; the second air inlet section and the first air inlet section are switched between connection and disconnection;
the surface cooler assembly is arranged at the downstream of the first air inlet section and the second air inlet section so as to cool the air flow output by the first air outlet and the second air outlet;
the air blower section comprises a third air inlet and a third air outlet which are communicated with each other by fluid; the third air inlet is positioned downstream of the surface cooler assembly; and the fluid conveyed by the first air inlet section and the second air inlet section enters the third air inlet after passing through the surface air cooler assembly.
In some embodiments, the surface cooler assembly comprises:
the first surface cooling section comprises a first surface cooler; the first surface air cooler is arranged at the downstream of the first air outlet of the first air inlet section so as to cool the airflow output by the first air inlet section; and
the second surface cooling section comprises a second surface cooler; the second surface air cooler is arranged at the downstream of the second air outlet of the second air inlet section so as to cool the air flow output by the second air inlet section;
the fluid conveyed by the first air inlet section enters the air feeder section after passing through the first surface cooling section and the third air inlet; and fluid conveyed by the second air inlet section also enters the air feeder section after passing through the second surface cooling section and the third air inlet.
In some embodiments, the air conditioning assembly further comprises:
and the switching valve is arranged between the first air inlet section and the second air inlet section so as to switch the communication and disconnection states of the first air inlet section and the second air inlet section and adjust the opening size in the communication state.
In some embodiments, the air conditioning assembly further comprises:
and the temperature measuring element is arranged at the third air outlet so as to detect the air outlet temperature of the third air outlet.
In some embodiments, the air conditioning assembly further comprises:
the controller is in signal connection with the switching valve and the temperature measuring element; the controller is configured to control a valve position of the switching valve based on the temperature signal measured by the temperature measuring element.
In some embodiments, the first surface cooler comprises a first refrigerant line, and the second surface cooler comprises a second refrigerant line; the air conditioning unit further includes:
a first water supply line in fluid communication with an inlet of a first refrigerant line of the first surface cooling section;
the first water outlet pipeline is communicated with an outlet of the first refrigerant pipeline of the first surface cooling section in a fluid mode;
a second water supply pipeline in fluid communication with an inlet of a second refrigerant pipeline of the second surface cooling section;
the second water outlet pipeline is communicated with the outlet fluid of the second refrigerant pipeline of the second surface cooling section; the first water outlet pipeline and the second water supply pipeline can be selectively switched between a connection state and a disconnection state; and
the main machine comprises an outflow port and a backflow port; the first water supply pipeline and the second water supply pipeline are both in fluid communication with an outflow port of the host machine; the first water outlet pipeline and the second water outlet pipeline are both communicated with a return port of the main machine in a fluid mode.
In some embodiments, the air conditioning assembly further comprises:
the bypass valve is arranged between the first water outlet pipeline and the return port of the main machine; and
and the self-operated temperature control valve is arranged among the first water outlet pipeline, the bypass valve and the second water supply pipeline, and is used for adjusting the temperature of the water output by the first water outlet pipeline and the main machine from the flow port and then conveying the water to the second water supply pipeline.
The air conditioning unit that above-mentioned technical scheme provided has first air inlet section and second air inlet section, and both can independent work, also can communicate each other. The first air inlet section and the second air inlet section are communicated with different air supply sources, so that the temperature of air flow in the first air inlet section and the second air inlet section can be different. According to the requirement of actual control, the first air inlet section and the second air inlet section can be communicated in a fluid mode, so that the temperatures of the first air inlet section and the second air inlet section can be closer to each other. Above-mentioned technical scheme has realized that the air inlet temperature adjusts and control more easily to make the air-out of recent air conditioner satisfy the requirement more, and do not need operations such as extra heating, air conditioning unit's performance can improve, and the energy consumption is lower.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a schematic structural diagram of an air conditioning unit provided by an embodiment of the present invention.
Fig. 2 is a schematic view of a refrigerant flow direction structure at a surface cooler assembly of an air conditioning unit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a control method for an air conditioning unit according to an embodiment of the present invention.
Reference numerals are as follows:
1. a first air intake section; 2. a second air intake section; 3. a surface cooler assembly; 4. a blower section; 5. a switching valve; 6. a temperature measuring element; 8. a host;
11. a first air inlet; 12. a first air outlet; 21. a second air inlet; 22. a second air outlet; 31. a first surface cooling section; 32. a second surface cooling section; 41. a third air inlet; 42. a third air outlet;
311. a first surface air cooler; 311a, a first refrigerant pipeline; 321. a second surface air cooler; 321a, a second refrigerant pipeline; 71. a first water supply line; 72. a first water outlet pipeline; 73. a second water supply line; 74. a second water outlet pipeline; 75. a bypass valve; 76. self-operated temperature control valve.
Detailed Description
The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 3.
An embodiment of the utility model provides an air conditioning unit is particularly useful for combined air conditioning unit, and air conditioning unit has multiple modes such as refrigeration, heating. Hereinafter, the air conditioning unit is described as being in a cooling mode, in which the air blown into the room by the air conditioning unit is cold air.
The air conditioning unit comprises a first air inlet section 1, a second air inlet section 2, a surface air cooler assembly 3 and an air feeder section 4.
The first air inlet section 1 and the second air inlet section 2 are arranged in parallel up and down, can be communicated with each other and can also be mutually independent. The first air inlet section 1 is positioned at the bottom, and the second air inlet section 2 is positioned at the top. The first air inlet section 1 is used for air inlet from the left side and air outlet from the right side. The second air inlet section 2 is used for air inlet from the top surface and air outlet from the right side. The right side end faces of the first air inlet section 1 and the second air inlet section 2 are flush. The arrangement mode is easier to arrange the air channel, and the positions of the components are more reasonable and compact.
The following three flow directions exist for the gas flow: first, the air in the first air inlet section 1 flows to the surface air cooler assembly 3 and then to the blower section 4, and the flow path is called a fresh air flow path, as shown by an arrow S1 in fig. 2. Second, the air in the second air intake section 2 flows to the surface air cooler module 3 and then to the blower section 4, and this flow path is called a return air flow path, as shown by an arrow S2 in fig. 2. Thirdly, the wind of the first wind inlet section 1 flows to the second wind inlet section 2, the surface cooler assembly 3 and then to the blower section 4, and the flow path is called a regulation flow path. The fresh air flow path and the return air flow path can exist at the same time. The fresh air flow path, the return air flow path and the adjusting flow path can also exist at the same time.
The first air inlet section 1, the second air inlet section 2, the surface cooler assembly 3 and the air feeder section 4 respectively adopt a box structure to form a structure shown in fig. 1. The first air inlet section 1 and the second air inlet section 2 are separated by a partition plate, and a switching valve 5 is arranged on the partition plate to control whether the first air inlet section 1 and the second air inlet section 2 are communicated or not and the size of the communication area, namely, the second air inlet section 2 and the first air inlet section 1 are switched between communication and disconnection, and the opening degree under the communication state is adjusted.
The first air inlet section 1 is used for introducing fresh air, and the first air inlet section 1 comprises a first air inlet 11 and a first air outlet 12 which are communicated by fluid. The first air inlet 11 of the first air inlet section 1 is directly communicated with a fresh air system, and the first air inlet 11 is used for receiving fresh air. A first air inlet adjusting valve can be installed at the first air inlet 11 to control the flow of fresh air entering the first air inlet section 1. The first air inlet section 1 is positioned at the bottom, and a wet cooling coil is arranged in the first air inlet section 1. The wet cooling coils may produce condensation.
The second air inlet section 2 is used for guiding the return air of the air conditioning unit back to the air conditioning unit, and the second air inlet section 2 comprises a second air inlet 21 and a second air outlet 22 which are communicated by fluid. A second intake air rate adjusting valve may be installed at the second intake port 21 to control the flow rate of the return air into the second intake section 2. The second air intake section 2 is positioned at the top, and a dry cooling coil is arranged in the second air intake section 2. The dry cooling coil produces little condensed water.
The surface air cooler assembly 3 is installed at the downstream of the first air inlet section 1 and the second air inlet section 2 to cool the air flow output by the first air outlet 12 and the second air outlet 22.
In some embodiments, the surface cooler assembly 3 includes a first surface cooling section 31 and a second surface cooling section 32. The first surface cooling section 31 includes a first surface cooler 311; the first surface air cooler 311 is disposed at the downstream of the first air outlet 12 of the first air inlet section 1 to cool the air flow output from the first air inlet section 1. The second surface cooling section 32 includes a second surface cooler 321; the second surface air cooler 321 is arranged at the downstream of the second air outlet 22 of the second air inlet section 2 to cool the air flow output by the second air inlet section 2; the first surface cooling section 31 and the second surface cooling section 32 are independent. Wherein, the fluid conveyed by the first air inlet section 1 enters the air blower section 4 after passing through the first surface cooling section 31 and the third air inlet 41; the fluid conveyed by the second air inlet section 2 also enters the blower section 4 after passing through the second surface cooling section 32 and the third air inlet 41. Referring to fig. 1, the first surface cooling section 31 and the second surface cooling section 32 are two independent boxes, or may be the same box, and a partition is provided in the box to divide the box into two independent small boxes.
Referring to fig. 1, in some embodiments, a combined filter section is also provided upstream of the blower section 4 and downstream of the surface cooler package 3. The combined filter segment includes a plurality of filter elements. The airflow passing through the surface cooler assembly 3 is totally sent to the combined filtering section for filtering.
Referring to fig. 1, the blower section 4 comprises a third air inlet 41 and a third air outlet 42 in fluid communication; the third air inlet 41 is located downstream of the surface cooler assembly 3; the fluids conveyed by the first air inlet section 1 and the second air inlet section 2 pass through the surface air cooler assembly 3 and then enter the third air inlet 41; the third outlet 42 of the blower section 4 is in fluid communication with the second inlet 21 to direct return air from the air conditioning unit back into the air conditioning unit.
The refrigerant flow path of the surface cooler unit 3 will be described. In some embodiments, the first surface cooler 311 includes a first refrigerant pipe 311a, and the second surface cooler 321 includes a second refrigerant pipe 321a. The air conditioning unit further comprises a first water supply line 71, a first water outlet line 72, a second water supply line 73, a second water outlet line 74 and the main unit 8. The first water supply line 71 is in fluid communication with an inlet of the first refrigerant line 311a of the first surface cooling stage 31. The first water outlet pipe 72 is in fluid communication with an outlet of the first refrigerant pipe 311a of the first surface cooling section 31. The second water supply line 73 is in fluid communication with an inlet of the second refrigerant line 321a of the second surface cooling stage 32. The second water outlet pipeline 74 is in fluid communication with an outlet of the second refrigerant pipeline 321a of the second surface cooling section 32; the first water outlet line 72 and the second water inlet line 73 are selectively switchable between on and off states. The main unit 8 includes an outlet 81 and a return 82; the first water supply line 71 and the second water supply line 73 are both in fluid communication with an outlet 81 of the main body 8; the first and second water outlet lines 72, 74 are both in fluid communication with a return port 82 of the host 8.
The first surface air cooler 311 takes charge of the heat exchange load of the fresh air, and the second surface air cooler 321 takes charge of the load of the return air. When the air conditioning unit is in a refrigeration mode, the temperature of fresh air is higher than that of return air.
The output of the main machine 8 is chilled water, and the temperature of the chilled water is 5-7 ℃ for example. If the temperature of the chilled water is required to be high, the temperature of the chilled water output by the main unit 8 is set to be approximately 7 ℃. If the temperature of the chilled water is required to be low, the temperature of the chilled water output by the main unit 8 is set to be approximately 5 ℃.
The embodiment of the utility model provides a technical scheme is owing to have first air inlet section 1, second air inlet section 2, so the new trend that air conditioning unit got into only accounts for some of the total amount of wind. Compare in the whole technical scheme who adopts the new trend among the correlation technique, still with the refrigeration mode, return air temperature is less than the new trend, the utility model discloses the required discharge of the surface cooler subassembly 3 of technical scheme is less than the whole required discharge that adopts the new trend of whole air conditioning unit, has reduced the 8 energy consumptions of host computer.
In some embodiments, the air conditioning assembly further includes a bypass valve 75 and a self-operated thermostatic valve 76. The bypass valve 75 is disposed between the first outlet line 72 and a return port 82 of the host 8. The self-operated temperature control valve 76 is disposed between the first water outlet pipeline 72, the bypass valve 75 and the second water supply pipeline 73, and is used for adjusting the temperature of the water discharged from the first water outlet pipeline 72 and the second water outlet pipeline 74 and then delivering the water to the second water supply pipeline 73.
The outlet water temperature of the first surface cooler 311 is higher than the outlet water temperature of the main unit 8, and the outlet water of the first surface cooler 311 with the higher temperature is entirely or partially introduced into the second surface cooler 321 to be used as the inlet water of the second surface cooler 321, so that the outlet water temperature of the second surface cooler 321 is correspondingly increased, and the outlet water of the second surface cooler 321 is entirely returned to the main unit 8. Therefore, the temperature difference between the water inlet temperature of the main machine 8 and the water return temperature of the main machine 8 is increased, and the effect of saving energy consumption is achieved.
The self-operated thermostat valve 76 may be set to a controlled temperature that is higher than the dew point temperature of the air passing through the second surface air cooler 321 and higher than the return air dew point temperature. The self-operated temperature control valve 76 automatically adjusts the proportion of the water outlet of the first surface cooler 311 and the water outlet of the main machine 8, so that the temperature of the water entering the second surface cooler 321 meets the requirement. After the self-operated thermostatic valve 76 is adjusted, if only part of the outlet water of the first surface cooler 311 is introduced into the second surface cooler 321, the rest of the outlet water of the first surface cooler 311 flows back to the host machine 8 through the bypass valve 75. The self-operated temperature control valve 76 runs stably, and the technical scheme is particularly suitable for the nuclear power air conditioning unit and can ensure that the air conditioning unit runs stably.
With continued reference to fig. 1, in some embodiments, the air conditioning unit further includes a temperature measuring element 6, and the temperature measuring element 6 is installed at the third air outlet 42 to detect the outlet air temperature of the third air outlet 42.
In order to collect the temperature of each location of the air conditioning unit, in some embodiments, temperature sensors are disposed at the first air inlet 11, the second air inlet 21, the first surface air cooler 311, and the second surface air cooler 321. The temperature sensors are used for collecting the temperature of each part so as to regulate and control the air conditioner unit.
In some embodiments, the air conditioning unit further comprises a controller, wherein the controller is in signal connection with the switching valve 5 and the temperature measuring element 6; the controller is configured to control the valve position of the switching valve 5 based on the temperature signal measured by the temperature measuring element 6.
The controller employs the following control logic: when the difference value between the actual air outlet temperature and the set air outlet temperature of the air conditioning unit is between the set upper limit threshold value and the set lower limit threshold value, the operation of the air conditioning unit meets the requirement and does not need to be adjusted.
If the air-out temperature of air conditioning unit is greater than and sets for the upper limit threshold value, it is too high to explain air conditioning unit's air-out temperature, because air conditioning unit is in under the refrigeration mode, air conditioning unit's air-out temperature is less than air conditioning unit's air inlet, and at this moment, there are two kinds of selections: 1, treating the airflow, namely reducing the fresh air temperature of the first air inlet section 1 so as to reduce the air outlet temperature of the final air conditioning unit; 2, the temperature of the refrigerant of the surface cooler assembly 3 is reduced, so that the temperature of the airflow passing through the surface cooler assembly 3 is lower.
Of the two approaches described above, the first approach is more energy efficient. Specifically, switching valve 5 between first air inlet section 1, the second air inlet section 2 can be opened for first air inlet section 1, the intercommunication of second air inlet section 2, the volume that the return air that increases gradually in the second air inlet section 2 enters into first air inlet section 1, mixes through new trend and return air, reduces the air current temperature.
The two modes can be used in a superposition mode to achieve a better control effect. Specifically, when the effect that switching valve 5 reached between first air inlet section 1, the second air inlet section 2 was adjusted alone still unsatisfied with the requirement, can reduce the temperature of intaking of surface cooler subassembly 3 for surface cooler subassembly 3 plays better cooling effect to the air current.
If the difference between the actual air outlet temperature of the air conditioning unit and the set air outlet temperature is smaller than the set upper limit threshold value, the air outlet temperature of the air conditioning unit is too low, and because the air conditioning unit is in a refrigeration mode, the air outlet temperature of the air conditioning unit is lower than the air inlet of the air conditioning unit, at the moment, two choices are provided: 1, processing air flow, namely increasing the fresh air temperature of a first air inlet section 1 so as to increase the outlet air temperature of the final air conditioning unit; 2, the temperature of the refrigerant of the surface cooler assembly 3 is increased, so that the temperature of the airflow passing through the surface cooler assembly 3 is higher.
Of the two modes, the first mode is specifically as follows: the switching valve 5 between the first air inlet section 1 and the second air inlet section 2 is gradually reduced, so that the communication area of the first air inlet section 1 and the second air inlet section 2 is reduced, the amount of return air in the second air inlet section 2 entering the first air inlet section 1 is gradually reduced, and the temperature of air flow in the first air inlet section 1 is increased. The second mode is specifically as follows: at least a portion of the outlet water of the first surface cooler 311 may be directed to the second surface cooler 321 to increase the inlet water temperature of the second surface cooler 321; or directly increase the outlet water temperature of the main machine 8.
The two modes can be used in a superposition mode to achieve a better control effect. Specifically, when the effect achieved by independently adjusting the switching valve 5 between the first air inlet section 1 and the second air inlet section 2 still does not meet the requirement, the water inlet temperature of the surface air cooler assembly 3 and the water outlet temperature of the main machine 8 can be increased, so that the temperature of the air flow passing through the surface air cooler assembly 3 is increased.
Referring to fig. 3, the embodiment of the present invention further provides an air conditioning unit control method, which is adopted in the present invention, the air conditioning unit provided by any one of the technical solutions realizes that the air conditioning unit control method includes the following steps: according to the difference value of the actual air outlet temperature and the set air outlet temperature of the air blower section 4 of the air conditioning unit, the air inlet proportion and/or the communication state of the first air inlet section 1 and the second air inlet section 2 are controlled, so that the air outlet temperature of the air blower section 4 meets the requirement.
In FIG. 3, t Is provided with To set the outlet air temperature, t Feeding device To set the outlet air temperature. The upper threshold is set, for example, to 0.3 deg.C to 0.7 deg.C, exemplified by 0.5 deg.C in some embodiments illustrated in FIG. 3. The lower threshold is set between-0.3 deg.C and-0.7 deg.C, for example-0.5 deg.C in some embodiments illustrated in FIG. 3.
In some embodiments, the air conditioning unit control method further includes the steps of: when the difference value between the actual air outlet temperature of the air blower section 4 and the set air outlet temperature is larger than the set upper limit threshold value, the first air inlet section 1 is communicated with the second air supply section so as to reduce the temperature in the first air supply section.
In some embodiments, after the first air intake section 1 and the second air supply section are completely communicated, when the difference between the actual outlet air temperature of the air supply section 4 and the set outlet air temperature is still greater than the set upper limit threshold, the following steps are taken: the inlet water temperature of the surface cooler assembly 3 is reduced to reduce the temperature of the air flow passing through the surface cooler assembly 3. The complete communication means that the opening degree of the switching valve 5 is 100%.
In some embodiments, the air conditioning unit control method further comprises the steps of: when the difference between the actual air outlet temperature of the air feeder section 4 and the set air outlet temperature is smaller than the set lower limit threshold, the water inlet temperature of the surface air cooler assembly 3 is increased to increase the temperature of the air flow passing through the surface air cooler assembly 3. The set lower threshold is set according to the operating condition.
In some embodiments, after the inlet water temperature of the surface cooler assembly 3 reaches the upper threshold, and when the difference between the actual outlet air temperature of the blower section 4 and the set outlet air temperature is still smaller than the set lower threshold, the following steps are taken: the opening degree of a communicating valve between the first air inlet section 1 and the second air supply section is reduced to increase the temperature in the second air supply section. The upper threshold is set as needed.
Fig. 3 is a flowchart illustrating a judgment process of the air conditioning unit control method according to an embodiment of the present invention.
The temperature measuring element 6 collects the air outlet temperature of the air conditioning unit in real time and measures the actual air outlet temperature t Feeding device And set outlet air temperature t Is provided with In the case of the difference value of (a), the whole control method can be divided into three branches.
The first branch is as follows: if t is Feeding device -t Is provided with >And 0.5, the temperature of the air supply (or referred to as air outlet) of the air conditioning unit is overhigh. The air supply temperature value of the air conditioning unit is reduced, and the air quantity of the wet cooling side corresponding to the first air inlet section 1 can be correspondingly increased or the water inlet temperature of the surface cooler assembly 3 can be reduced. In consideration of energy conservation, a method of increasing the air volume of the cooling side is preferably adopted, specifically, the switching valve 5 needs to be opened to mix part of return air with fresh air, the temperature of the fresh air in the first air inlet section 1 is reduced, and the temperature of the fresh air is treated by the first surface air cooler 311, mixed with the rest return air in the second air inlet section 2 and then sent into a room. If the difference still does not meet the requirement after the opening of the switching valve 5 reaches 100%, the inlet water temperature of the surface cooler assembly 3 is reduced to meet the requirement. In some cases, if the inlet water temperature of the surface cooler assembly 3 still cannot meet the requirement after reaching the lower limit value, the operation returns to the beginning, the information is prompted at the control terminal, and an automatic controller checks the debugging system or changes the set conditions.
The second branch circuit: if t is Feeding device -t Is provided with <And-0.5, which indicates that the air supply temperature value of the air conditioning unit is too low, and the air outlet temperature needs to be increased. Specifically, the inlet water temperature of the second surface air cooler 321 may be increased first, and after the detection and adjustment, whether the difference value meets the requirement or not may be determined. If the inlet water temperature of the second surface cooler 321 reaches the upper limit value, and the difference is still less than-0.5 ℃, the opening degree of the switching valve 5 needs to be reduced at this time. If the switching valve 5 does not meet the requirement after the switching valve is reduced to 0 percent, the switching valve returns to start, the information is prompted at the control terminal, and an automatic controller checks the debugging system or changes the set conditions.
The third branch is as follows: -0.5<t Feeding device -t Is provided with <And 0.5, the operation of the system meets the requirement, and the water inlet temperature and the working state of the switching valve 5 are kept unchanged.
In the above process, the preset value of the change of the opening of the switching valve 5 is 1%/s, and the preset value of the change of the water temperature is 0.1 ℃/s.
In addition, in spring and autumn, in order to fully utilize outdoor fresh air, the opening degree of the first air inlet quantity adjusting valve is kept at 70%, and the opening degree of the second air inlet quantity adjusting valve is kept at 30%. In autumn and winter, in order to ensure indoor ventilation, the first intake air quantity regulating valve keeps 30% of opening degree, and the second intake air quantity regulating valve keeps 70% of opening degree.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described embodiments, or equivalents may be substituted for some of the features of the embodiments, without departing from the spirit or scope of the present invention.
Claims (8)
1. An air conditioning assembly, comprising:
the first air inlet section (1) comprises a first air inlet (11) and a first air outlet (12) which are communicated with each other through fluid; the first air inlet (11) is used for receiving fresh air;
the second air inlet section (2) comprises a second air inlet (21) and a second air outlet (22) which are communicated with each other through fluid; the second air inlet section (2) and the first air inlet section (1) are switched between connection and disconnection;
the surface air cooler assembly (3) is arranged at the downstream of the first air inlet section (1) and the second air inlet section (2) and is used for cooling air flows output by the first air outlet (12) and the second air outlet (22); and
the air blower section (4) comprises a third air inlet (41) and a third air outlet (42) which are communicated with each other through fluid; the third air inlet (41) is located downstream of the surface cooler assembly (3); and the fluid conveyed by the first air inlet section (1) and the second air inlet section (2) passes through the surface air cooler assembly (3) and then enters the third air inlet (41).
2. Air conditioning assembly according to claim 1, characterized in that the surface cooler assembly (3) comprises:
a first surface cooling section (31) comprising a first surface cooler (311); the first surface air cooler (311) is arranged at the downstream of the first air outlet (12) of the first air inlet section (1) so as to cool the air flow output by the first air inlet section (1); and
a second surface cooling stage (32) comprising a second surface cooler (321); the second surface air cooler (321) is arranged at the downstream of the second air outlet (22) of the second air inlet section (2) so as to cool the air flow output by the second air inlet section (2);
the fluid conveyed by the first air inlet section (1) enters the air blower section (4) after passing through the first surface cooling section (31) and the third air inlet (41); and fluid conveyed by the second air inlet section (2) also enters the air feeder section (4) after passing through the second surface cooling section (32) and the third air inlet (41).
3. The air conditioning assembly as set forth in claim 1, further comprising:
and the switching valve (5) is arranged between the first air inlet section (1) and the second air inlet section (2) to switch the communication and disconnection states of the first air inlet section (1) and the second air inlet section (2), and the opening degree of the first air inlet section and the second air inlet section under the communication state is adjusted.
4. The air conditioning assembly as set forth in claim 3, further comprising:
and the temperature measuring element (6) is arranged at the third air outlet (42) to detect the air outlet temperature of the third air outlet (42).
5. The air conditioning assembly as set forth in claim 4, further comprising:
the controller is in signal connection with the switching valve (5) and the temperature measuring element (6); the controller is configured to control the valve position of the switching valve (5) based on the temperature signal measured by the temperature measuring element (6).
6. The air conditioning assembly as set forth in claim 2 wherein the first surface air cooler (311) includes a first refrigerant line (311 a) and the second surface air cooler (321) includes a second refrigerant line (321 a); the air conditioning unit further includes:
a first water supply line (71) in fluid communication with an inlet of a first refrigerant line (311 a) of the first surface cooling stage (31);
a first water outlet pipeline (72) which is in fluid communication with an outlet of a first refrigerant pipeline (311 a) of the first surface cooling section (31);
a second water supply line (73) in fluid communication with an inlet of a second refrigerant line (321 a) of the second surface cooling stage (32);
a second water outlet pipeline (74) which is in fluid communication with an outlet of a second refrigerant pipeline (321 a) of the second surface cooling section (32); -the first water outlet line (72) and the second water inlet line (73) are selectively switchable between a connected and a disconnected state; and
a main unit (8) including an outlet (81) and a return (82); the first water supply line (71), the second water supply line (73) are both in fluid communication with an outlet (81) of the main machine (8); the first and second water outlet lines (72, 74) are both in fluid communication with a return port (82) of the host machine (8).
7. The air conditioning assembly as set forth in claim 6, further comprising:
a bypass valve (75) disposed between the first outlet line (72) and a return port (82) of the main machine (8); and
and the self-operated temperature control valve (76) is arranged among the first water outlet pipeline (72), the bypass valve (75) and the second water supply pipeline (73) and is used for adjusting the temperature of water output by the first water outlet pipeline (72) and the outflow port (81) of the main machine (8) and then conveying the water to the second water supply pipeline (73).
8. Air conditioning assembly according to claim 1, characterized in that the second air intake section (2) is located at the top of the first air intake section (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222552388.9U CN218096324U (en) | 2022-09-26 | 2022-09-26 | Air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222552388.9U CN218096324U (en) | 2022-09-26 | 2022-09-26 | Air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218096324U true CN218096324U (en) | 2022-12-20 |
Family
ID=84455776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222552388.9U Active CN218096324U (en) | 2022-09-26 | 2022-09-26 | Air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218096324U (en) |
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2022
- 2022-09-26 CN CN202222552388.9U patent/CN218096324U/en active Active
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