TWI666411B - Heating, ventilation and air conditioning system and controlling method using the same - Google Patents

Abstract

The invention provides a heating, ventilation and air conditioning (HAVC) system, which includes an outdoor air intake control device, at least one air supply chain region, and at least one series channel. The outdoor air intake control device includes an outdoor air temperature control unit and a main fan. The air inlet of the at least one air supply chain zone is in communication with the air outlet of the main fan. The at least one air supply chain zone includes n sub air supply zones, and each of the n sub air supply zones includes at least one air inlet and at least one air outlet. Breath. The at least one series channel is connected to the at least one air outlet and / or the at least one air inlet of each of the n sub-supply areas in sequence, and then each of the n sub-supply areas is serially connected one by one, where n is an integer and n> 1.

Description

HVAC system and control method thereof

The invention relates to a heating, ventilation and air-conditioning system and a control method thereof, in particular to an air-conditioning system used in the technical field of heating, ventilation and air conditioning (HVAC), for efficiently adjusting the temperature, humidity and flow of air in an indoor space.

Please refer to FIG. 1, which is a schematic structural diagram of a conventional heating, ventilation and air conditioning (HVAC) air conditioning system 10. In the conventional HVAC system 10, the outdoor air 19 is mixed with the indoor return air 20 to form a mixed air 22, which is sent to the refrigerator 18 through a specific pipeline to reduce the temperature of the mixed air 22 to 12.8 ° C, and at the same time The humidity is controlled within a specific range (of course, the set temperature of the refrigerator 18 can also be adjusted according to different needs): Then, the total amount of mixed air 22 entering the air supply area is adjusted by a fan 11 and then connected through an air inlet. The pipeline 16 is transmitted to the plurality of sub-gas supply areas 13 in the upper half section and the pipeline 16 is transmitted to the plurality of sub-gas supply areas 13 in the lower half section through another air inlet. Each of the sub-gas supply areas 13 has an air inlet and A sub-intake device 12 is also provided between the corresponding air inlet connection lines 16, and the air from the air inlet connection line 16 is adjusted by the sub air inlet device 12 to be suitable for entering the sub-air supply area 13. Indoor air volume; After that, the air outlets of each of the sub-supply areas 13 in each section are simultaneously connected to a corresponding air-outlet connection line 17, and then the indoor air of the plurality of sub-supply areas 13 in the upper and lower sections is selectively discharged Return to the outdoor (through the outdoor air exhaust line 21) or return air through a recycling line 20 to the refrigerator 18 for reuse (ie, recycle air). It should be noted that the plurality of sub-gas supply areas 13 in each section are arranged in parallel between the corresponding inlet connection line 16 and the outlet connection line 17. For example, suppose there are ten sub-supply areas 13 today, each sub-supply area 13 requires an air volume of 1,000 CFM (Cubic feet per minute), and the air volume of 100 CFM outdoor air per 1,000 CFM, in other words, the fan 11 needs to supply Air flow of 10,000CFM. For example, usually a working space (such as an office building) will use multiple main fans, especially corresponding to multiple sub-supply areas. Although this design does not require additional fans in each of the sub-supply areas 13, once multiple If one or more of the fans fails, the sub-gas supply area for which the fan is responsible will be completely free of air conditioning. In addition, because when the fan is large enough (such as 10,000 CFM), the fan can only use the type of AC power, which is not only power-consuming but also expensive. However, because the prior art fan needs to supply all the air in the plurality of sub-air supply regions 13 at the same time, it is unavoidable to use a larger fan, which results in very high energy consumption and poor operating efficiency of the entire air conditioning system.

Please also refer to FIG. 2, which is a schematic diagram showing the pipeline configuration of the conventional HVAC system 10. The plurality of small squares with oblique lines in the figure 2 represent the air outlets of the plurality of sub-air supply regions 13, and the plurality of air outlets pass through the air outlets. The gas port lines 17 are connected to each other (please refer to Fig. 1), and a plurality of boxes without drawn oblique lines represent the plurality of sub-intake devices 12, and each thin black line represents each of the sub-supply areas 13 connected to each of the air outlets. Pipeline, each thick black line represents the gas inlet connection pipeline 16 connected to each of the sub-gas supply regions 13 correspondingly. In practical applications, the more air-conducting pipelines used in conventional HVAC systems, the more energy losses are generated (cooled / heated air is heated / cooled by long-distance transportation, and the wear caused by the frictional resistance of the pipeline Etc.), which will cause the system fan design to be located far from the fan 11 (for example, connected to the end of the air inlet connection line 16), the indoor air temperature of the sub-air supply area 13 cannot reach the predetermined temperature or its location. The indoor air temperature of the sub-air-supply area 13 that is relatively close to the fan 11 (such as connected to the front end of the air inlet connection line 16) is too low.

Therefore, it is necessary to propose an innovative HVAC system and its control method to solve the above technical problems.

In order to solve the problems of the above-mentioned conventional technologies, the present invention provides a heating, ventilation and air conditioning system and a control method thereof, which adopts a chain recooling scheme to avoid frequent adjustment of indoor air temperature and effectively reduce fan power consumption. , And reduce the average pollutant content in the air to improve indoor air quality without the need to sacrifice the comfort of individual or certain air supply areas, as in the case of conventional HVAC systems.

To achieve the above object, the present invention provides a HVAC system, which includes an outdoor air intake control device, at least one air supply chain zone, and at least one Channels in series.

The outdoor air intake control device is used for receiving an outdoor air. The outdoor air intake control device includes an outdoor air temperature control unit and a main fan connected to the outdoor air temperature control unit. The at least one gas supply chain region includes n sub-gas supply regions. Each of the sub-gas supply regions includes at least one air inlet and at least one air outlet. The at least one serial channel is connected to the at least one air outlet and / or the at least one air inlet of each of the n sub-gas supply areas in sequence, and then the n sub-gas supply areas are connected in series one by one. Wherein n is an integer and n> 1, the n sub-supply sub-supply zones including the first sub-supply zone are connected to the air outlet of the main fan via the at least one serial passage, and The at least one air inlet of the n-th sub air supply area is connected to the at least one air outlet of the n-1th sub air supply area and the at least one air outlet of the nth sub air supply area is connected to an outdoor air exhaust line .

In a preferred embodiment, when n> 2, the n sub-supply sub-supply regions in sequence include the m-th sub-supply except the first sub-supply region and the n-th sub-supply region. The at least one air inlet of the gas area is connected to the at least one air outlet of the m-1th sub-gas supply area, and the at least one air outlet of the mth sub-gas supply area is connected to the m + 1th sub-gas supply area. The at least one air inlet, where m is an integer and n> m> 1.

In a preferred embodiment, the HVAC system further includes a sub air intake device, which is disposed at the at least one air inlet of each of the n sub air supply areas. The sub air intake device includes at least a temperature control unit and an air volume control unit. yuan. The air volume control unit is configured to adjust the amount of air entering the sub air intake device in each of the n sub air supply areas.

In a preferred embodiment, at least one air inlet connection pipe and at least one air outlet connection pipe are further included between the n sub air supply areas of the at least one air supply chain area. The at least one air inlet connection pipe is simultaneously connected to the at least one air inlet of each of the n sub air supply areas of the at least one air supply chain area and the corresponding sub air inlet device thereof. The at least one air outlet connection pipe is connected to the at least one air outlet of each of the n sub air supply areas of the at least one air supply chain area.

In a preferred embodiment, the HVAC system further includes a controller for selectively closing the at least one air inlet connection pipe and the at least one outlet according to the relationship between the outdoor temperature and a specific temperature value. The air port connection pipe simultaneously opens the at least one series channel; or the at least one air inlet connection pipe and the at least one air outlet connection tube are opened, and the at least one series channel is closed at the same time.

To achieve the above object, the present invention also provides a control method for a HVAC system, which includes: first, heating air through an outdoor air temperature regulating unit and delivering the air to at least one air supply chain area through a main fan; and Through at least one serial channel to sequentially connect at least one air outlet and / or at least one air inlet of each of the n sub-gas supply areas of the at least one gas supply chain area, and then serially connect each of the n sub-gas supplies one by one Area, where n is an integer and n> 1; then, the air is delivered to each of the n sub-air supply areas of the at least one air supply chain area through the at least one serial channel.

In a preferred embodiment, a control method of the HVAC system The method further includes: first, setting a sub air intake device at the at least one air inlet of each of the n sub air supply areas; and then adjusting the amount of air entering the sub air inlet device in each of the n sub air supply areas; Next, the temperature and humidity of the air output by the sub-intake device are adjusted.

In addition, the present invention also provides a control method for a HVAC system, which includes: first, heating the air through an outdoor air temperature regulating unit and delivering the air to at least one air supply chain region through a main fan; A serial channel connects at least one air outlet and / or at least one air inlet of each of the n sub-gas supply areas of the at least one gas supply chain area in sequence, and then serially connects each of the n sub-gas supply areas one by one. n is an integer and n> 1; then, the at least one air inlet of each of the n sub-air supply regions of the at least one air supply chain zone is connected through at least one air inlet connection pipe, and connected through at least one air outlet connection pipe The at least one air outlet of each of the n sub-air supply areas of the at least one air supply chain area; then, selectively closing / opening the at least one air inlet connection pipe and the air connection according to the relationship between the outdoor temperature and a specific temperature value; and At least one air outlet connection pipe, and opening / closing the at least one serial passage; and then, supplying the at least one air through the at least one air inlet connection pipe and the at least one air outlet connection pipe The n sub-supply area or zone while conveying air through the at least one channel of the series of the n sub-region of at least one gas supply chain region sequentially conveying air.

In a preferred embodiment, the control method of the HVAC system further includes: first, setting a sub air intake device at the at least one air inlet of each of the n sub air supply areas; then, adjusting each of the into n sub-gas supply areas The amount of air in the sub air intake device; and adjusting the temperature and humidity of the air output by the sub air intake device.

Compared with the conventional technique, the present invention forms a series connection between the n sub-supply regions by setting a series channel, so that the size and supply rate of the main fan can be reduced; and by using each of the n sub-supply regions At least one air inlet is provided with a sub-intake device, so when the main fan fails, it can still maintain a certain degree of operation; because the size and power requirements of the original single fan are greatly reduced, the main fan in the present invention and The air volume control unit (that is, the sub-fan) can use a miniaturized DC unit, thereby solving the problems of the prior art. When the outdoor air temperature is low, the present invention can use the controller to introduce an appropriate amount of outside air to further reduce system energy consumption.

10, 100, 200, 300‧‧‧ HVAC systems

11‧‧‧fan

12, 120‧‧‧ sub air intake device

13, 130‧‧‧ Sub gas supply area

16,167‧‧‧Air inlet connection pipe

17,169‧‧‧Air outlet connection pipe

18‧‧‧ freezer

19, 190‧‧‧ outdoor air

20‧‧‧Circulation recovery pipeline

21, 170‧‧‧ outdoor air exhaust line

22‧‧‧mixed air 22

110‧‧‧main fan

112‧‧‧Air outlet

121‧‧‧Air volume control unit

123‧‧‧Temperature control unit

125‧‧‧air supply channel

127‧‧‧return air channel

129‧‧‧flow valve

131、151‧‧‧Air inlet

132‧‧‧air outlet

140‧‧‧Outdoor air temperature control unit

150‧‧‧Gas supply chain zone

160‧‧‧controller

195‧‧‧Outdoor air intake control device

S01-S06, S11-S18‧‧‧step

FIG. 1 is a schematic diagram showing the structure of a conventional HVAC system; FIG. 2 is a schematic diagram showing a pipeline configuration of the conventional HVAC system of FIG. 1; FIG. 3 is a diagram showing a first comparison according to the present invention; A schematic diagram of the architecture of a HVAC system according to a preferred embodiment; FIG. 4 illustrates a schematic diagram of the architecture of a HVAC system according to a second preferred embodiment of the present invention; FIG. 5 illustrates a sub-intake of FIG. Schematic diagram of the device; Fig. 6 shows the pipeline configuration diagram of the HVAC system according to Fig. 4; Fig. 7 shows the HVAC system according to the second preferred embodiment of the present invention. And FIG. 1 shows a comparison diagram of carbon dioxide concentration in different sub-supply areas of the HVAC system in the first operation mode. FIG. 8 shows a HVAC system according to a second preferred embodiment of the present invention, and FIG. 1 is a comparison diagram of carbon dioxide concentration of a conventional HVAC system in different sub-supply regions under a second operation mode; FIG. 9A illustrates a first operation of a HVAC system according to a third preferred embodiment of the present invention Schematic diagram of the mode; FIG. 9B, which illustrates the second operation mode of the HVAC system according to the third preferred embodiment of the present invention. FIG. 10, which illustrates the heating of the second preferred embodiment according to the present invention. A control method of an air-conditioning system; and FIG. 11 illustrates a control method of a HVAC system according to a third preferred embodiment of the present invention.

The following descriptions of the embodiments are with reference to the drawings, which are used to describe specific embodiments in which the present invention can be implemented. The directional terms mentioned in the present invention, such as "up", "down", "front", "rear", "left", "right", "inside", "outside", "side", etc., are for reference only. Schematic direction. Therefore, the directional terms used are for explaining and understanding the present invention, but not for limiting the present invention.

Please refer to FIG. 3 first, which is a schematic diagram showing a structure of a HVAC system 100 according to a first preferred embodiment of the present invention. The HVAC system 100 includes an outdoor air intake control device 195, at least one air supply chain region 150, and at least One series channel 165.

The outdoor air intake control device 195 includes an outdoor air temperature control unit 140 and a main fan 110 connected to the outdoor air temperature control unit 140. The outdoor air intake control device 195 is configured to receive outdoor air 190. The air inlet 151 of the at least one air supply chain region 150 communicates with the air outlet 112 of the main fan 110. Each of the at least one air supply chain region 150 includes n sub-air supply regions 130, each of the n sub-air supply regions 130. It includes at least one air inlet 131 and at least one air outlet 132. Each of the at least one serial channel 165 is used to sequentially connect the at least one air outlet 132 and / or the at least one air inlet 131 of each of the n sub-gas supply areas in the corresponding gas supply chain area 150, and then one by one. Each of the n sub-supply areas 130 is connected in series to provide the required indoor air supply, wherein the at least one series channel 165 is sequentially connected in series to each of the two adjacent sub-supply areas 130 of the at least one air supply chain area 150. The corresponding at least one air outlet 132 and the at least one air inlet 131. In this embodiment, the HVAC system 100 includes a series channel 165 connected in series to each of the n sub-supply regions 130 within the gas supply chain region 150 in an upper half, and another series channel 165 connected in series. Each of the n sub-gas supply regions 130 in the gas supply chain region 150 located in the lower half is next.

It should be noted that, because the outdoor air 190 may make the HVAC system 100 inoperable under the condition of excessive low temperature, the outdoor air temperature regulating unit 140 needs to be installed to prevent the problem that the HVAC system cannot operate.

Preferably, since n is an integer and n> 1, the n are serially connected one by one The sub-supply area 130 includes the at least one air inlet 131 of the first sub-supply area 130 connected to the at least one air outlet 112 of the main fan 110 via the at least one serial passage 165, and the n-th sub-air supply area 130 The at least one air inlet 131 is connected to the at least one air outlet 132 in the (n-1) th sub air supply area, and the at least one air outlet 132 in the nth sub air supply area is connected to an outdoor air exhaust line 170.

Preferably, when n> 2, the n sub-supply regions 130 connected in series one by one include the m-th sub-supply gas except the first sub-supply region 130 and the n-th sub-supply region 130. The at least one air inlet 131 of the area 130 communicates with the at least one air outlet 132 of the m-1th sub-gas supply area 130, and the at least one air outlet 132 of the m-th sub gas supply area 130 communicates with the m + 1 The at least one air inlet 131 of the individual gas supply area 130, where m is an integer and n> m> 1.

In the preferred embodiment, the HVAC system 100 includes two air supply chain regions 150. Each gas supply chain region 150 includes five sub-gas supply regions 130. (Ie n = 5, m = 2 ~ 4) Taking the gas supply chain region 150 located in the upper half as an example, the n sub-gas supply regions 130 include a first sub-gas supply region 130 (leftmost) and at least one first Second child gas supply area (the rest). The at least one air inlet 131 of the first sub-air supply region 130 is in communication with the air inlet 151 (that is, a part of the at least one serial channel 165) of the gas supply chain region 150; then, it continues to pass through the at least one serial channel 165. The at least one air outlet 132 of the first sub-gas supply area 130 is connected to the at least one air inlet 131 of a second sub-gas supply area 130 (second from the left) adjacent to the first sub-gas supply area 130; By analogy, finally, the at least one air outlet 132 of the rightmost sub-air supply region 130 is discharged to an outdoor air exhaust line 170. So every The at least one serial channel 165 is sequentially connected to the at least one air outlet 132 and / or the at least one air inlet 131 of each of the n sub-gas supply areas in the corresponding gas supply chain area 150, and then each one is connected in series. The n sub-air supply areas 130 are provided to provide the required indoor air supply. In FIG. 3, the outdoor air exhaust lines 170 connected by the two supply chain regions 150 located at the upper and lower halves can be selectively connected to the same outlet or discharged separately. The following preferred embodiments are also similar. This preferred embodiment is not repeated here.

Continuing the conventional skills mentioned in the previous case, suppose today there are ten sub-gas supply areas 130 (each five sub-gas supply areas 130 belong to a gas supply chain area 150). Each sub-gas supply area 130 of the conventional air conditioning system is An air volume of 1,000 CFM (cubic feet per minute) is required. However, in the HVAC system 200 of the preferred embodiment, the main fan 110 only needs to provide 1,000 CFM of outdoor air (190 °), so a small DC fan can be used to improve efficiency and installation cost. Further, large air volume fans (like the conventional 10,000 CFM) can also be designed by DC, but it will cause a significant increase in production costs. However, the use of DC design for small air volume fans can best highlight its production costs and operating efficiency. Therefore, the industry generally adopts AC design for large air volume fans; DC design for small air volume fans in order to pursue optimized production costs and operating efficiency.

Referring to FIGS. 4 and 5, FIG. 4 is a schematic structural diagram of a HVAC system 200 according to a second preferred embodiment of the present invention; FIG. 5 is a diagram illustrating a structure of a sub-intake device 120 of FIG. 4. schematic diagram. The second preferred embodiment and the first The difference between the preferred embodiments is that the HVAC system 200 further includes a sub air inlet device 120 disposed at the at least one air inlet 131 of each of the n sub air supply areas 130. The sub air intake device 120 includes at least a temperature control unit 123 and an air volume control unit 121. The air volume control unit 121 is configured to adjust an air volume supplied to the sub air supply region 130 by each of the n sub air intake devices 120.

It should be noted that, in the preferred embodiment, the outdoor air temperature control unit 140 of the outdoor air intake control device 195 is used to heat the air to ensure the normal operation of the main fan 110; adjust the temperature and humidity to operation The value set by the user depends on the cooperative operation of the at least one temperature control unit 123 and the air volume control unit 121 of the n sub-intake devices 120. As in the previous case, because the main fan 110 only needs to provide an air volume of 1,000 CFM; in other words, the air volume in each of the sub-supply areas 130 entering each of the air-supply chain area 150 is 500 CFM. However, according to different requirements, the sub-air The air intake device 120 further includes an air supply channel 125 and a return air channel 127. The air supply channel 125 is in communication with the air inlet 151 of the air supply chain region 150 (that is, a part of the at least one serial channel 165), and is used for transmitting the wind (500 CFM) delivered by the main fan 110 to the at least one In series channel 165. The return air passage 127 communicates with the sub-air-supply regions 130 corresponding to the sub-air-intake devices 120, and is used to re-transmit the air in each of the sub-air-supply regions 130 to the sub-air-intake devices 120 for use. The air volume control unit 121 further includes a flow valve 129 for controlling the air volume of the return air passage 127.

Referring to FIG. 6, a schematic diagram of the pipeline configuration of the HVAC system 200 according to FIG. 3 is shown. In order to more clearly illustrate the present invention, a practical application The case is illustrated. In FIG. 6, a plurality of small boxes with oblique lines indicate at least one air outlet 132 of the plurality of sub-supply regions 130, and a plurality of large boxes without oblique lines indicate the plurality of sub-intake devices 120. A black line is used to indicate that each of the sub-gas supply areas 130 is connected to at least one air inlet 131 and its pipeline, and a thick black solid line is used to indicate five of the gas supply chain region 150 that are connected by each of the series channels 165. Sub-gas supply region 130; thick dashed lines represent five sub-gas supply regions 130 of the gas supply chain region 150 that are conducted by the series channel 165.

Because the temperature is adjusted by the sub-intake device 120 before the air enters each of the sub-supply areas 130, the energy loss can be reduced (the temperature-adjusted air does not need to be transported over a long distance), so that all the sub-supply areas 13 The temperature can be consistent with the set value. However, according to the inventor's research results at the Texas A & M (U.S.A.) general service complex building, it is believed that the present invention can indeed solve the technical problems of the existing HVAC system. Please refer to the description below:

Referring to FIG. 7, there is shown a comparison diagram of carbon dioxide concentrations in different sub-gas supply areas of the HVAC system according to the second preferred embodiment of the present invention and FIG. The dotted line in the figure shows the change curve of the conventional HVAC system with operating time. It can be found that in the initial stage (0-5 hours), the carbon dioxide concentration increased rapidly from 400PPM (1 part per million) to 1200PPM; then it was stable at 1250PPM about. Regarding each of the sub gas supply regions 130 described in this figure, please refer to the gas supply chain region 150 above or below in FIG. 4. "*", "X", "▲", "■", and "◆" in this figure indicate The five sub-supply regions 130 from left to right of any one of the gas supply chain regions 150 in Fig. 4 at the initial stage (about 0-1 hour), the carbon dioxide concentration of each sub-supply region 130 rapidly increased; -3 stabilized as a child. Not surprisingly, the carbon dioxide concentration of the sub-supply region 130 nearer to the main fan 110 is lower; however, although the carbon dioxide concentration of the sub-supply region 130 farther away from the main fan 110 is relatively increased, it is still The carbon dioxide concentration of the conventional HVAC system is similar, which is still in compliance with relevant laws and regulations.

Please refer to FIG. 8, which illustrates a comparison diagram of carbon dioxide concentrations in different sub-supply regions of the HVAC system according to the second preferred embodiment of the present invention and FIG. 1. "*", "X", "▲", "■", and "◆" in this figure represent the five sub-air supply regions 130 from left to right according to any one of the gas supply chain regions 150 in FIG. 4. The difference between this figure and the first operation mode in Figure 7 lies in that: the fixed sub-air supply area 130 is used to change the target sub-air supply area 130 for a fixed time. In other words, O-4 hourly delivers air to the left-most sub-air supply area. 130, then the air is sequentially delivered to the right to the rightmost supply area 130; in 4-8 hours, the air is first delivered to the rightmost sub-supply area 130, and then the air is sequentially delivered to the left to the leftmost supply area 130 ( The detailed structure is not explained). Therefore, the air quality (carbon dioxide concentration) of the sub-air-supply region 130 that is farther from the main fan 110 can always be lower than the air quality of the sub-air-supply region 130 that is closer to the main fan 110. According to calculations, although the oxygen concentration in the sub-supply area that the air finally reaches will be higher than the carbon dioxide concentration of the conventional HVAC system, it still complies with the relevant laws and regulations. The number of users in the same area changes, and the order of air supply between the sub-air supply areas 130 is selectively changed, so that the appropriate sub-air supply area 130 has better air quality at the appropriate time, instead of the conventional HVAC system. , All sub-gas supply areas can only maintain a fixed carbon dioxide concentration (1250PPM). The carbon dioxide concentration (600-1000 PPM) of the first several sub-air supply regions 130 of the present invention can bring more flexibility to the operator.

Please refer to Figures 9A and 9B. FIG. 9A is a schematic structural diagram of a HVAC system 300 according to a third preferred embodiment of the present invention in the first operation mode; FIG. 9B is a diagram of HVAC according to the third preferred embodiment of the present invention A schematic diagram of the air-conditioning system 300 in the second operation mode. The difference between the third preferred embodiment and the foregoing second preferred embodiment is that in the third preferred embodiment, between the n sub-gas supply areas 130 of each of the at least one gas supply chain area 150 Including at least one air inlet connection pipe 167 and at least one air outlet connection pipe 169, the at least one air inlet connection pipe 167 is connected to the at least one of each of the n sub-gas supply areas 130 of each of the at least one gas supply chain area 150 An air inlet 131 and its corresponding sub-air-intake device 120. The at least one air outlet connection pipe 169 is connected to the at least one air outlet 132 of each of the n sub-air supply regions 130 of each of the at least one air supply chain region 150. The HVAC system 300 further includes a controller 160. In Figures 9A and 9B, the at least one air inlet connection pipe 167 and the at least one air outlet connection pipe 169 in the lower half are connected to the controller 160 by solid lines, respectively, to represent that the controller 160 is used for Controls opening / closing air of the at least one air inlet connection pipe 167, the at least one air outlet connection pipe 169, and the at least one serial passage 165 Delivery. It should be noted that, in this embodiment, the at least one air inlet connection pipe 167 and the at least one air outlet connection pipe 169 located in the upper half are also controlled by the controller 160 (not shown). By universally switching the controller 160, the HVAC system 300 can be implemented in the first operation mode or the second operation mode.

When the HVAC system 300 shown in FIG. 9A is in the first operation mode, the controller 160 closes the at least one air inlet connection pipe 167 and the at least one air outlet connection pipe 169 of the air supply chain zone 150, respectively. The indoor air is delivered to the n sub-supply areas 130 (closed by a dot-chain line in the figure); at the same time, the controller 160 turns on the at least one serial channel 165 to deliver indoor air to the n sub-supply areas 130 (roughly Body lines indicate on). In other words, each of the sub-gas supply regions 130 of the two gas supply chain regions 150 located in the upper and lower halves sequentially supplies gas in series.

However, in the second operation mode of the HVAC system 300 shown in FIG. 9B, the controller 160 turns on the at least one air inlet connection pipe 167 and the at least one air outlet connection pipe of the air supply chain zone 150. 169 delivers indoor air to each of the n sub-supply areas 130 (opened by bold lines), but at the same time the controller 160 closes the at least one serial channel 165 to deliver indoor air to the n sub-supply areas 130 (take The dot-chain line indicates closed). In other words, each of the sub-gas supply regions 130 located in the two gas supply chain regions 150 on the upper and lower halves simultaneously supplies gas in parallel.

In this embodiment, the controller 160 detects a specific sub-gas supply area 130 according to the outdoor temperature and a specific temperature value (that is, the controller 160 is connected to detect (The temperature of the indoor air), selectively closing the at least one air inlet connection pipe 167 and the at least one air outlet connection pipe 169, and simultaneously opening the at least one serial channel 165; or opening the at least one inlet The air port connection pipe 167 and the at least one air outlet connection pipe 169 simultaneously close the at least one serial passage 165. Therefore, the controller 160 can be used to automatically set the n sub-air-supply areas 130 of the HVAC system 300 to supply air in a series or parallel manner.

Please refer to FIG. 10, which illustrates a control method of a HVAC system according to a second preferred embodiment of the present invention. In step S01, the air is heated by an outdoor air temperature control unit 140 and the air is delivered to at least one air supply chain region 150 by a main fan 110. Next, in step S02, the at least one air supply is sequentially connected through at least one serial channel 165. At least one air inlet 131 and / or at least one air outlet 132 of each of the n sub-supply regions of the gas chain region 150, and each of the n sub-supply regions 130 is serially connected one by one, where n is an integer and n> 1 Next, in step S03, the air is delivered to each of the n sub-supply regions 130 of the at least one air supply chain region 150 through the at least one serial channel 165. Next, in step S04, a sub-intake device 120 is set to each One of the n sub-supply areas 130 at the at least one air inlet 131; then, step S05, adjusting the amount of air entering the sub-intake device 120 in each of the n sub-supply areas 130; then, step S06, adjusting The temperature and humidity of the air output by the sub-intake device 120.

Please refer to FIG. 11, which illustrates a control method of a HVAC system according to a third preferred embodiment of the present invention. The difference between this preferred embodiment and the HVAC system of FIG. 10 is that this preferred embodiment can make the HVAC system according to different situations. The air-conditioning system 300 supplies air in a series or parallel manner. The control method includes: step S11, heating the air through an outdoor air temperature regulating unit 140 and delivering the air to at least one air supply chain region 150 through a main fan 110; then, step S12, sequentially through at least one serial channel 165 At least one air inlet 131 and / or at least one air outlet 132 of each of the n sub-gas supply regions of the at least one gas supply chain region 150 are connected, and each of the n of the at least one gas supply chain region 150 is serially connected one by one. Each sub-supply region 130; in step S13, at least one air inlet 131 of each of the n sub-supply regions 130 of the at least one air supply chain region 150 is connected through at least one air inlet connection pipe 167 and through at least one air outlet The connecting pipe 169 connects the at least one air outlet 132 of the n sub-air supply regions 130 of each of the at least one air supply chain region 150. Next, in step S14, a controller 160 is used according to the relationship between the outdoor temperature and a specific temperature value. Selectively closing / opening the at least one air inlet connection pipe 167 and the at least one air outlet connection pipe 169 and opening / closing the at least one serial channel 165; then, step S15, connecting through the at least one air inlet The pipe 167 and the at least one air outlet connection pipe 169 deliver air to n sub-supply areas 130 of each of the at least one air supply chain area 150 simultaneously or through the at least one series channel 165 to the at least one air supply chain area 150. Each of the n sub-supply regions 130 delivers air sequentially; then, in step S16, a sub-intake device 120 is set at the air inlet 131 of each of the n sub-supply regions 130; then, in step S17, each of the n sub-supply regions 130 is adjusted. The amount of air entering the sub-air-intake device 120 in the n sub-air-supply areas 130; then, in step S18, the temperature and humidity of the air output by the sub-air-intake device 120 are adjusted.

Compared with the conventional technology, the present invention makes n The air supply areas are connected in series, so that the size and rate of the main fan can be reduced. Furthermore, by setting sub-intake devices in the n sub-air supply areas, when the main fan fails, it can still maintain a certain degree of operation; Because the requirements for the size and power of the original single fan are greatly reduced, both the main fan and the air volume control unit (ie, sub-fans) in the present invention can use a miniaturized DC unit, thereby solving the technical problems of the prior art.

The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the principles of the present invention, several improvements and retouches can be made. These improvements and retouches should also be considered as The protection scope of the present invention.

Claims (8)

An HVAC system includes: an outdoor air intake control device for receiving outdoor air, including an outdoor air temperature control unit and a main fan connected to the outdoor air temperature control unit; at least one air supply chain zone Including n sub-gas supply areas, each of which includes at least one air inlet and at least one air outlet; and at least one serial passage, which sequentially connects the n sub-gas supplies of each of the at least one gas supply chain area The at least one air inlet and / or the one air outlet of the area, and then serially connect the n sub-supply areas one by one; where n is an integer and n> 1, and the n sub-supply sub-supply areas include the first The air inlet of each sub-supply area is connected to the air outlet of the main fan via the at least one series channel, and the air inlet of the nth sub-supply area is connected to the air outlet of the n-1th sub-supply area and the nth The air outlet of the sub air supply area communicates with an outdoor air exhaust line; it also includes a sub air inlet device, which is disposed at the at least one air inlet of each of the n sub air supply areas. The sub air inlet device includes a A temperature control unit and an air volume control unit, the air volume control unit is configured to adjust an air volume supplied to the sub air supply area by each of the n sub air intake devices. The HVAC system according to item 1 of the scope of patent application, wherein when n> 2, the n sub-supply air zones in series include one in addition to the first sub-air zone and the n-th sub-air zone The at least one air inlet in the m-th sub-gas supply area is connected to the at least one air outlet in the (m-1) th sub-gas supply area, and the at least one air-outlet in the m-th sub gas supply area is connected to the The at least one air inlet of m + 1 sub-gas supply regions, where m is an integer and n> m> 1. The HVAC system according to item 1 of the scope of patent application, wherein the n sub-air supply areas of the at least one air supply chain area further include at least one air inlet connection pipe and at least one air outlet connection pipe. An air inlet connection pipe simultaneously connects the at least one air inlet of each of the n sub air supply regions of the at least one air supply chain zone and the corresponding sub air intake device, and the at least one air outlet connection pipe simultaneously connects the at least one The at least one air outlet of each of the n sub-gas supply regions of a gas supply chain region. The HVAC system according to item 3 of the scope of patent application, further comprising a controller for selectively closing the at least one air inlet connection pipe and the at least one air outlet according to the relationship between the outdoor temperature and a specific temperature value. Connect the pipes to open the at least one series channel at the same time; or open the at least one air inlet connection tube and the at least one air outlet connection tube and close the at least one series channel at the same time. A control method of a HVAC system includes: heating air through an outdoor air temperature regulating unit and delivering the air to at least one air supply chain area through a main fan; and sequentially connecting the at least one air supply through at least one serial channel At least one air inlet and / or one air outlet of each of the n sub-supply areas of the chain area, and then each of the n sub-supply areas is serially connected one by one, where n is an integer and n> 1, and is used for each An air volume control unit and a temperature control unit of a sub-air-intake device at the at least one air inlet of the n sub-air-supply areas adjust the amount of air and the temperature of each sub-air-supply area supplied to the sub-air-supply area; And the air is delivered to each of the n sub-air supply regions of the at least one air supply chain region through the at least one serial passage. According to the control method of the HVAC system described in item 5 of the scope of the patent application, the method further includes: setting a sub air intake device at the air inlet of each of the n sub air supply areas; and adjusting the air supply of each of the n sub air inlet devices. The amount of air in the sub-supply area; and adjusting the temperature and humidity of the air output by the sub-intake device. A control method for an HVAC system includes: heating air through an outdoor air temperature regulating unit and delivering the air to at least one air supply chain area through a main fan; and sequentially connecting the at least one air supply through at least one serial channel. At least one air inlet and / or one air outlet of each of the n sub-supply areas of the gas chain area, and then each of the n sub-supply areas is serially connected one by one, where n is an integer and n> 1; The gas port connecting pipe is connected to the at least one air inlet of the n sub gas supply regions of the at least one gas supply chain region and the n sub gas supply regions of the at least one gas supply chain region are simultaneously connected through at least one gas outlet connection tube. The at least one air outlet; selectively closing / opening the at least one air inlet connection pipe and the at least one air outlet connection pipe and opening / closing the at least one serial passage according to the relationship between the outdoor temperature and a specific temperature value; and through the At least one air inlet connection pipe and the at least one air outlet connection pipe simultaneously deliver air to the n sub-air supply areas of the at least one air supply chain area or through the at least one serial channel pair At least n sub-zone a gas supply chain region sequentially conveying air. The control method of the HVAC system as described in item 7 of the scope of patent application, further comprising: setting a sub air intake device at the air inlet of each of the n sub air supply areas; The amount of air in the sub-supply area; and adjusting the temperature and humidity of the air output by the sub-intake device.