Control methods for heat supply systems

Abstract

This invention discloses a control method for a heat supply system. The heat supply system includes: multiple first heat sources for providing a first heat source to at least multiple zones, each corresponding to one of the zones; a second heat source for providing a second heat source to the multiple zones; multiple first controllers for controlling at least the multiple first heat sources, each corresponding to one of the first heat sources; and a second controller for controlling the second heat source. The second controller communicates with the multiple first controllers. The control method includes: the multiple first controllers acquiring the second heat source required by the multiple zones; and the second controller controlling the operating state of at least the second heat source based on the second heat source. This invention, while satisfying zone control requirements, makes the heat supply more rational, giving the heat supply system better versatility and scalability.

Description

Technical Field

[0001] This invention relates to the field of heating technology, and in particular to a control method for a heat supply system. Background Technology

[0002] Based on the varying heating demands of different areas, such as water pressure, water temperature, and time requirements, a separate heating system needs to be installed for each area. Users would then need to independently control these systems for each area, ensuring that the required heat is supplied by the appropriate system. However, this heating method has several drawbacks: the need for separate systems for different areas leads to complex equipment selection and high costs; and the requirement for independent control results in poor versatility and hinders widespread adoption.

[0003] Therefore, based on years of experience and practice in related industries, the inventor proposes a control method for a heat supply system to overcome the shortcomings of existing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a control method for a heat supply system that satisfies zone control while making the heat supply more rational and giving the heat supply system better versatility and scalability.

[0005] The objective of this invention can be achieved through the following methods:

[0006] This invention provides a control method for a heat supply system.

[0007] The heat supply system includes:

[0008] A plurality of first heat sources are used to provide first heat to at least a plurality of partitions, wherein the plurality of first heat sources correspond one-to-one with the plurality of partitions;

[0009] A second heat source for providing a second heat source to the plurality of zones;

[0010] A plurality of first controllers for controlling at least one of the plurality of first heat sources, wherein the plurality of first controllers correspond one-to-one with the plurality of first heat sources;

[0011] A second controller for controlling the second heat source;

[0012] The second controller communicates with the plurality of first controllers;

[0013] The control method includes:

[0014] The first controllers acquire the second heat provided by the second heat source required by the multiple partitions;

[0015] The second controller controls the operating state of the second heat source based on the second heat.

[0016] In a preferred embodiment of the present invention, when at least one or at least two of the first heat sources fail to meet the heating demand of the corresponding zone, the second heat source provides the second heat to the corresponding zone.

[0017] In a preferred embodiment of the present invention

[0018] When the first heat provided by at least one or at least two first heat sources to the corresponding partition is less than the heat demand of the corresponding partition, the corresponding first controller obtains the second heat required by the second heat source for the corresponding partition and sends it to the second controller, which then controls the second heat source to provide the second heat.

[0019] In a preferred embodiment of the present invention, when the second heat source does not meet the heating demand of the partition, the first heat source corresponding to the partition provides the first heat.

[0020] In a preferred embodiment of the present invention

[0021] When the second heat provided by the second heat source to the partition is less than the heat demand of the partition, the first controller corresponding to the partition obtains the first heat provided by the first heat source required by the partition, and controls the corresponding first heat source to provide the first heat.

[0022] In a preferred embodiment of the present invention, the step of the second controller controlling the operating state of the second heat source based on the second heat includes:

[0023] The second controller controls the second heat source to gradually increase the amount of heat supplied to the corresponding partition until the heat demand of the partition is met.

[0024] In a preferred embodiment of the present invention, the partition includes at least a first partition and a second partition, wherein the priority of the heat demand of the first partition is lower than the priority of the heat demand of the second partition.

[0025] When both the first partition and the second partition require the second heat source to provide the second heat...

[0026] The steps of the second controller controlling the operating state of the second heat source based on the second heat include:

[0027] The second controller controls the second heat source to gradually increase the amount of heat it provides until the amount of heat it can provide reaches the maximum threshold.

[0028] If the second heat source can provide the second heat to the first zone after reaching the maximum threshold, and if it still does not meet the heat demand of the second zone, then the second heat source shall stop or reduce the supply of the second heat to the first zone.

[0029] In a preferred embodiment of the present invention, when there are multiple first partitions, if the second heat provided by the second heat source reaches the maximum threshold and still does not meet the heat demand of the second partition, the second controller controls the second heat source to stop or reduce the provision of the second heat to some or all of the first partitions, or gradually increase the number of first partitions that are stopped from providing the second heat, until the heat demand of the second partition is met.

[0030] In a preferred embodiment of the present invention, after the second heat source stops providing the second heat to the first partition...

[0031] If the heat demand of the second zone is less than the sum of the second heat provided to the second zone by the second heat source and the first heat provided by the first heat source;

[0032] The second heat source resumes supplying the second heat to the first zone.

[0033] In a preferred embodiment of the present invention

[0034] The first controller acquires the heat demand of the second partition;

[0035] If the heat demand of the second zone is less than the sum of the second heat provided by the second heat source and the first heat provided by the first heat source;

[0036] The first controller sends a signal to the second controller, which then controls the second heat source to resume providing the second heat to the first partition.

[0037] In a preferred embodiment of the present invention, the first zone includes a heating zone, and the second zone includes a hot water supply zone.

[0038] In a preferred embodiment of the present invention, when there are multiple second partitions and different second partitions have different priorities, after the second heat source stops providing the second heat to the first partition,

[0039] If the heat demand of the second zone is still not met, then the second heat source shall stop or reduce the second heat supplied to at least one low-priority second zone.

[0040] In a preferred embodiment of the present invention, the plurality of partitions constitute a heat demand area, the heat required by the heat demand area is supplied by the heat supply system, and at least two of the plurality of partitions are located in different spatial locations and / or have different heat demands.

[0041] In a preferred embodiment of the present invention, the second heat source includes one or more boilers, and the step of controlling the operating state of the second heat source includes:

[0042] Change the number of boilers in operation, and / or change the operating power of at least some of the boilers that are already in operation.

[0043] In a preferred embodiment of the present invention, the second controller is one of the plurality of first controllers.

[0044] In a preferred embodiment of the present invention, the plurality of first controllers are independent of the first heat source, and the plurality of first controllers are electrically connected to the corresponding first heat source respectively. The second controller is independent of the second heat source, and the second controller is electrically connected to the second heat source and the plurality of first controllers are electrically connected.

[0045] In a preferred embodiment of the present invention, the heat supply system includes a plurality of heat exchange devices corresponding to the plurality of partitions respectively. The plurality of heat exchange devices correspond one-to-one with the plurality of partitions. The liquid of the second heat source exchanges heat with the liquid of the first heat source and / or the liquid in the pipeline of the partition through the plurality of heat exchange devices to provide second heat to the partition.

[0046] In a preferred embodiment of the present invention, a plurality of flow control devices are provided in the flow path between the second heat source and the plurality of heat exchange devices, and the plurality of flow control devices are used to control the second heat provided by the second heat source to the plurality of zones respectively.

[0047] In a preferred embodiment of the present invention, the heat exchange device includes at least a first flow channel and a second flow channel for heat exchange, the first flow channel having a first inlet and a first outlet, and the second flow channel having a second inlet and a second outlet.

[0048] The heat supply system includes multiple heat exchange devices corresponding to the multiple zones respectively. The flow control device includes at least an inlet and an outlet. The inlet is used to connect to the outlet of the second heat source, and the outlet is used to connect to the first inlet of the first flow channel. The first outlet of the first flow channel is connected to the inlet of the second heat source.

[0049] The second outlet of the second flow channel is connected to the inlet of the corresponding water-using terminal in the partition, and the second inlet of the second flow channel is connected to the outlet of the first heat source and / or to the outlet of the water-using terminal.

[0050] Alternatively, the outlet of the first heat source is connected to the inlet of the water-using terminal in the corresponding partition, the inlet of the first heat source is connected to the second outlet of the second flow channel, and the second inlet of the second flow channel is connected to the outlet of the water-using terminal in the corresponding partition.

[0051] In a preferred embodiment of the present invention, the flow control device includes at least an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the second heat source, the first outlet is connected to the inlet of the second heat source, the second outlet is connected to the first inlet of the first flow channel, and the first outlet of the first flow channel is connected to the inlet of the second heat source.

[0052] In a preferred embodiment of the present invention, the inlet of the first heat source is connected to the outlet of the water-using terminal, the outlet of the first heat source is connected to the second inlet of the second flow channel, and the second outlet of the second flow channel is connected to the inlet of the water-using terminal.

[0053] In a preferred embodiment of the present invention, the second inlet of the second flow channel and the inlet of the first heat source are both connected to the outlet of the water-using terminal, and the second outlet of the second flow channel and the outlet of the first heat source are both connected to the inlet of the water-using terminal.

[0054] In a preferred embodiment of the present invention, the inlet of the first heat source and the second inlet of the second flow channel are both connected to the outlet of the water-using terminal, the outlet of the first heat source is connected to the second inlet of the second flow channel, and the second outlet of the second flow channel is connected to the inlet of the water-using terminal.

[0055] In a preferred embodiment of the present invention, the heat supply system includes a water distributor and a water collector. The water distributor has one inlet and multiple outlets, and the water collector has one outlet and multiple inlets. The inlet of the water distributor is connected to the outlet of the second heat source. The multiple outlets of the water distributor are respectively connected to one of the inlets of the water collector and the first inlet of the first flow channel. The multiple inlets of the water collector are respectively connected to at least one outlet of the water distributor and the first outlet of the first flow channel. The outlet of the water collector is connected to the inlet of the second heat source.

[0056] In a preferred embodiment of the present invention, a circulation pump for driving the liquid to circulate is provided upstream of the inlet of the flow control device in the direction of liquid flow.

[0057] In a preferred embodiment of the present invention, the outlet of the first heat source is connected to the second inlet of the second flow channel, and the inlet of the first heat source is connected to the outlet of the water-using terminal and / or connected to a tap water source.

[0058] In a preferred embodiment of the present invention, the flow control device includes a three-way valve.

[0059] In a preferred embodiment of the present invention, the plurality of heat exchange devices include plate heat exchangers and / or volumetric heat exchangers.

[0060] In a preferred embodiment of the present invention, the first heat source includes one or more heat pumps, and the second heat source includes one or more boilers.

[0061] As described above, the characteristics and advantages of the control method for the heat supply system of the present invention are as follows: The heat supply system includes multiple first heat sources and one second heat source. The multiple first heat sources correspond one-to-one with multiple zones. The multiple first heat sources provide first heat to at least multiple zones respectively, while the second heat source can provide second heat to multiple zones. Multiple first controllers, each corresponding to one of the multiple first heat sources, control the corresponding first heat source, while the second heat source is controlled by a second controller. During the heating process, the multiple first controllers acquire the second heat required by the second heat source for multiple zones and send the second heat required by the second heat source for multiple zones to the second controller through communication between the first controller and the second controller. The second controller controls the working state of the second heat source according to the second heat, so that while meeting the zone control requirements, it is not necessary to set up a separate second heat source and second controller for each zone, thereby simplifying the heat supply system and control method, making the heat supply more reasonable, and giving the heat supply system better versatility and scalability. Attached Figure Description

[0062] The accompanying drawings are intended only to illustrate and explain the present invention and do not limit the scope of the invention.

[0063] in:

[0064] Figure 1 : This is a structural principle block diagram of a heat supply system in one embodiment of the present invention.

[0065] Figure 2 This is one of the flowcharts for a control method of a heat supply system in an embodiment of the present invention.

[0066] Figure 3 This is a second flowchart of a control method for a heat supply system in one embodiment of the present invention.

[0067] Figure 4 : This is a schematic diagram of the heat supply system in one embodiment of the present invention.

[0068] Figure 5 : This is one of the connection structure diagrams between the first heat source and the second flow channel of the heat exchange device in one embodiment of the present invention.

[0069] Figure 6 This is a second diagram showing the connection structure between the first heat source and the second flow channel of the heat exchange device in one embodiment of the present invention.

[0070] Figure 7 This is the third diagram showing the connection structure between the first heat source and the second flow channel of the heat exchange device in one embodiment of the present invention.

[0071] The reference numerals in the accompanying drawings of this invention are:

[0072] 1. First heat source; 2. Second heat source; 3. First controller; 4. Second controller; 5. Zone; 6. Heat exchange device; 601. First flow channel; 6011. First inlet; 6012. First outlet; 602. Second flow channel; 6021. Second inlet; 6022. Second outlet; 7. Flow control device; 701. Inlet; 702. Outlet; 703. First outlet; 704. Second outlet; 8. Water terminal; 9. Water distributor; 10. Water collector; 11. Second valve element; 12. Circulation pump; 13. First valve element. Detailed Implementation

[0073] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0074] like Figure 1 , Figure 2As shown, the present invention provides a control method for a heat supply system, wherein the heat supply system includes multiple first heat sources 1, one second heat source 2, multiple first controllers 3, and one second controller 4. The multiple first heat sources 1 are used to provide first heat to at least multiple zones 5 respectively, and the multiple first heat sources 1 correspond one-to-one with the multiple zones 5 (i.e., different first heat sources 1 can provide heat to corresponding zones 5); the second heat source 2 is used to provide second heat to the multiple zones 5 (i.e., the second heat source 2 can provide heat to all zones 5); the multiple first controllers 3 are used to control at least the multiple first heat sources 1 respectively, and the multiple first controllers 3 correspond one-to-one with the multiple first heat sources 1 (i.e., different first controllers 4 can control different first heat sources 1). 3 can control the corresponding first heat source 1, but cannot control other non-corresponding first heat sources 1); the second controller 4 is used to control the second heat source 2; the second controller 4 is communicatively connected with multiple first controllers 3; wherein, the control method includes: step S1: multiple first controllers 3 acquire the second heat required by the second heat source 2 for multiple partitions 5; step S2: the second controller 4 controls the working state of the second heat source 2 at least according to the second heat required by the second heat source 2 (since the second controller 4 is communicatively connected with multiple first controllers 3, the first controllers 3 can send the acquired second heat required by the second heat source 2 to the second controller 4) to meet the heat demand of the corresponding partition 5.

[0075] In this invention, the heat supply system includes multiple first heat sources 1 and one second heat source 2. The multiple first heat sources 1 correspond one-to-one with multiple zones 5. The multiple first heat sources 1 provide first heat to each of the multiple zones 5, while the second heat source 2 provides second heat to each of the multiple zones 5. Multiple first controllers 3, each corresponding to one of the multiple first heat sources 1, control the corresponding first heat source 1. The second heat source 2 is controlled by a second controller 4. During the heating process, the multiple first controllers 3 acquire the second heat required by each of the multiple zones 5 from the second heat source 2, and transmit this second heat required by each zone 5 to the second controller 4 through communication between the first controllers 3 and the second controller 4. The second controller 4 controls the operating state of the second heat source 2 based on the second heat, thus meeting the control requirements of each zone 5 without the need for separate second heat sources 2 and second controllers 4 in each zone 5. This makes the heat supply more rational and gives the heat supply system better versatility and scalability.

[0076] In this invention, multiple zones 5 constitute a heat demand area. The heat required by the heat demand area is supplied by a heat supply system. At least two zones 5 are located in different spatial locations and / or have different heat demands. The different spatial locations may be, but are not limited to, different heights of the zones 5 (e.g., different floors), resulting in different water pressures. The different heat demands may be, but are not limited to, different zones 5 corresponding to different water-using devices (e.g., heating water, washing water, and other domestic water), resulting in different water temperatures.

[0077] When providing heat to multiple zones 5, three different heating methods can be provided:

[0078] 1) When the first heat source 1 and the second heat source 2 need to provide heat at the same time to meet the heat demand of multiple zones 5, the second heat source 2 can first provide the second heat to the zone 5. When the second heat provided by the second heat source 2 does not meet the heat demand of the zone 5, the first controller 3 corresponding to the zone 5 obtains the first heat provided by the first heat source 1 required by the corresponding zone 5, and the first controller 3 controls the working state of the corresponding first heat source 1. The first heat source 1 provides the first heat to the corresponding zone 5 to meet the heat demand of the corresponding zone 5.

[0079] 2) When both the first heat source 1 and the second heat source 2 are required to provide heat to meet the heat demand of multiple zones 5, the first controller 3 can control the operating state of the corresponding first heat source 1 to ensure that the first heat provided by the first heat source 1 reaches a maximum threshold (which can be the maximum value that the first heat source 1 can provide itself, or a pre-set maximum value that the first heat source 1 can achieve). If the first heat provided by the first heat source 1 is still insufficient to meet the heat demand of the corresponding zone 5, the first controller 3 obtains the second heat required by the second heat source 2 for the corresponding zone 5 and sends it to the second controller 4. The second controller 4 controls the operating state of the second heat source 2 according to the required second heat to meet the heat demand of the corresponding zone 5. Specifically, the second heat source 2 only provides second heat to the corresponding zone 5 when the first heat provided by at least one or at least two first heat sources 1 is insufficient to meet the heating demand of the corresponding zone 5. The specific control method is as follows: when the first heat provided by at least one first heat source 1 or at least two first heat sources 1 to the corresponding partition 5 is less than the heat demand of the corresponding partition 5, the corresponding first controller 3 obtains the second heat provided by the second heat source 2 required by the corresponding partition 5 and sends it to the second controller 4. The second controller 4 controls the second heat source 2 to provide the second heat. Therefore, the second controller 4 can be regarded as the main controller, and the multiple first controllers 3 are sub-controllers. The second controller 4 receives the heat demand information obtained by each first controller 3 and controls the working state of the second heat source 2, so as to meet the heat demand of different partitions 5.

[0080] 3) When the first heat source 1 and the second heat source 2 need to provide heat at the same time to meet the heat demand of multiple zones 5, the ratio of the first heat provided by the first heat source 1 to the second heat provided by the second heat source 2 can be preset. The first heat source 1 and the second heat source 2 provide the first heat and the second heat to the corresponding zone 5 in a preset ratio to meet the heat demand of the corresponding zone 5.

[0081] In an optional embodiment of the present invention, such as Figure 3 As shown, in step S2, the step of the second controller 4 controlling the working state of the second heat source 2 according to the second heat includes: the second controller 4 controlling the second heat source 2 to gradually increase the second heat supplied to the corresponding partition 5 until the heat demand of the partition 5 is met.

[0082] Furthermore, since the first heat source 1 provides the first heat to the corresponding partition 5, it can be known that the number of partitions 5 is at least two. When the number of partitions 5 is at least two, partition 5 includes at least a first partition and a second partition, and the heat demand of the first partition has a lower priority than the heat demand of the second partition. Figure 3 As shown, when both the first and second zones require the second heat source 2 to provide the second heat, step S2, in which the second controller 4 controls the operating state of the second heat source based on the second heat, includes:

[0083] The second controller 4 controls the second heat source 2 to gradually increase the amount of heat it provides until the amount of heat it can provide reaches the maximum threshold.

[0084] Once the second heat source 2 reaches its maximum heat threshold, if it still cannot meet the heat demand of the second zone, then the supply of second heat source 2 to the first zone will cease. This heating method allows the second heat originally supplied to the first zone to be supplemented to the second zone without significantly impacting the heating supply to the first zone, thus meeting the user's current heating demand for the second zone. Alternatively, the heating demand for the second zone can also be met by reducing the amount of second heat supplied from the second heat source to the first zone.

[0085] Furthermore, such as Figure 3As shown, when there are multiple first zones, if the second heat source 2 reaches its maximum heat threshold and still cannot meet the heat demand of the second zones, the second controller 4 can control the second heat source 2 to stop providing second heat to some or all of the first zones to meet the user's current heating demand for the second zones. Alternatively, the heating demand for the second zones can be met by reducing the amount of second heat provided to some or all of the first zones. Furthermore, the heating demand for the second zones can be met by gradually increasing the number of first zones whose second heat supply has been stopped until the heat demand of the second zones is met.

[0086] Furthermore, such as Figure 3 As shown, after the second heat source 2 stops providing the second heat to the first zone, if the heat demand of the second zone is less than the sum of the second heat provided by the second heat source 2 and the first heat provided by the first heat source 1, then the second heat source 2 can resume providing the second heat to the first zone, thereby ensuring that both the first and second zones can meet the user's heat demand as much as possible. The specific control method is as follows: the heat demand of the second zone is obtained through the first controller 3; if the heat demand of the second zone is less than the sum of the second heat provided by the second heat source 2 and the first heat provided by the first heat source 1, then the first controller 3 sends a signal to the second controller 4, which controls the operating state of the second heat source 2, causing the second heat source 2 to resume providing the second heat to the first zone.

[0087] In this invention, the priority levels of different zones 5 can be set independently. For example, the priority of user heating water is lower than the priority of user bathing and other domestic water. The area with the heat demand for user heating water is the first zone, while the area with the heat demand for user bathing and other domestic water is the second zone. The first zone includes a heating zone, and the second zone includes a hot water supply zone.

[0088] Furthermore, such as Figure 3As shown, when there are multiple second zones with different priorities, if the heat demand of a second zone is still not met after the second heat source 2 stops supplying heat to the first zone, then the second heat source stops supplying heat to at least one lower-priority second zone. Among the multiple second zones, the priorities of different second zones can be further set according to the user's actual water usage, such as prioritizing bathing water over drinking water. Therefore, without significantly affecting the heat demand of the user's second zone, the heat from lower-priority second zones can be supplemented to higher-priority second zones to meet the user's heating needs for higher-priority second zones. Alternatively, the heating demand for higher-priority second zones can be met by reducing the amount of heat supplied by the second heat source to at least one lower-priority second zone.

[0089] In an optional embodiment of the present invention, the first heat source 1 includes one or more heat pumps. If a single heat pump cannot meet the demand for providing the first heat to the corresponding zone 5, multiple heat pumps can be used to provide the first heat to the corresponding zone 5. The second heat source 2 includes one or more boilers. If a single boiler cannot meet the demand for providing the second heat, multiple boilers can be used to provide the second heat to each zone 5, but it is necessary to ensure that all boilers are centrally controlled through the second controller 4. The steps for controlling the operating state of the second heat source 2 include: changing the number of operating boilers, and / or changing the operating power of at least some of the boilers already in operation, thereby meeting the demand for providing the second heat.

[0090] In an optional embodiment of the present invention, the second controller 4 may be an independent controller that communicates with multiple first controllers 3 and controls the working state of the second heat source 2.

[0091] In another optional embodiment of the present invention, the second controller 4 may also be one of a plurality of first controllers 3, which communicates with the other plurality of first controllers 3 respectively, and controls the working state of the second heat source 2; in addition, the first controller 3 may also obtain the second heat provided by the second heat source 2 required for the corresponding partition 5, and control the working state of the corresponding first heat source 1.

[0092] In an optional embodiment of the present invention, a plurality of first controllers 3 may be disposed on the housing of a corresponding first heat source 1, and a second controller 4 may be disposed on the housing of a second heat source 2, allowing for on-site control by personnel. In a preferred embodiment, the plurality of first controllers 3 are independent of the corresponding first heat source 1 and electrically connected to each of the first controllers 1. The second controller 4 is independent of the second heat source 2 and electrically connected to both the second and second heat sources 2, and is also electrically connected to the plurality of first controllers 3. The first controllers 3 are separate from the corresponding first heat source 1, and the second controller 4 is separate from the second heat source 2. Communication between the first controllers 3 and the second controller 4 facilitates signal transmission over long distances, enabling remote control of the first heat source 1 and the second heat source 2.

[0093] In an optional embodiment of the present invention, such as Figure 1 As shown, the heat supply system includes multiple heat exchange devices 6, each corresponding one-to-one with multiple zones 5. The method of providing second heat to the multiple zones 5 via the second heat source 2 is as follows: the liquid in one second heat source 2 exchanges heat with the liquid in one first heat source 1 through the corresponding heat exchange device 6, thereby transferring the second heat to the liquid in the first heat source 1. The first heat source 1 then supplies heat to the corresponding zone 5, achieving the purpose of providing second heat to the corresponding zone 5. Alternatively, the liquid in one second heat source 2 can exchange heat with the liquid in the pipes of zone 5 through the corresponding heat exchange device 6, directly transferring the second heat to the liquid in the pipes of the corresponding zone 5, achieving the purpose of providing second heat to the corresponding zone 5. Both heat exchange methods can also be used simultaneously, that is, the liquid in one second heat source 2 exchanges heat with the liquid in one first heat source 1 and the liquid in the pipes of zone 5 simultaneously through the corresponding heat exchange device 6, achieving the purpose of providing second heat to the corresponding zone 5.

[0094] Furthermore, depending on different heat exchange requirements, multiple heat exchange devices 6 include plate heat exchangers and / or volumetric heat exchangers.

[0095] In an optional embodiment of the present invention, such as Figure 1 , Figure 4 As shown, multiple flow control devices 7 are installed in the flow path between the second heat source 2 and multiple heat exchange devices 6. The multiple flow control devices 7 are used to control the second heat supplied by the second heat source 2 to multiple zones 5 respectively. The control signal output terminal of the second controller 4 is electrically connected to the control terminals of the multiple flow control devices 7 respectively. The second controller 4 can control the multiple flow control devices 7 respectively, thereby controlling the second heat supplied by the second heat source 2 to the multiple zones 5.

[0096] In an optional embodiment of the present invention, such as Figure 1As shown, the heat exchange device 6 includes at least a first flow channel 601 and a second flow channel 602 for heat exchange (i.e., the liquid flowing through the first flow channel 601 can exchange heat with the liquid flowing through the second flow channel 602). The first flow channel 601 has a first inlet 6011 and a first outlet 6012, and the second flow channel 602 has a second inlet 6021 and a second outlet 6022. The flow control device 7 includes at least an inlet 701 and an outlet 702. The inlet 701 of the flow control device 7 is connected to the outlet of the second heat source 2, and the outlet 702 of the flow control device 7 is connected to the outlet of the first flow channel 602. The first inlet 6011 of the first flow channel 601 is connected to the first outlet 6012 of the first flow channel 601 and the inlet of the second heat source 2. Thus, the second heat provided by the second heat source 2 can be transferred to the first flow channel 601 of the heat exchange device 6 through the flow control device 7 and the flow path between the second heat source 2 and the first flow channel 601 of the heat exchange device 6. Then, heat exchange occurs between the liquid in the first flow channel 601 and the liquid in the second flow channel 602, and finally the second heat is transferred to the corresponding partition 5. After heat exchange, the liquid in the first flow channel 601 of the heat exchange device 6 is circulated back to the second heat source 2. The second outlet 6022 of the second flow channel 602 is connected to the outlet of the first heat source 1 in the corresponding partition 5 and / or the inlet of the water terminal 8 in the corresponding partition 5. The second inlet 6021 of the second flow channel 602 is connected to the outlet of the water terminal 8. The liquid from the water terminal 8 can flow back into the second flow channel 602 to participate in heat exchange with the liquid in the first flow channel 601, and after being heated, it flows back to the water terminal 8 for user use. In addition, in this embodiment, the outlet of the first heat source 1 is used to connect to the inlet of the water terminal 8 in the corresponding partition 5, the inlet of the first heat source 1 is connected to the second outlet 6022 of the second flow channel 602, and the second inlet 6021 of the second flow channel 602 is used to connect to the outlet of the water terminal 8 in the corresponding partition 5. Through the flow path arrangement between the first heat source 1 and the water terminal 8 in the corresponding partition 5, the liquid heated by the first heat source 1 can flow to the water terminal 8 for user use, so as to achieve the purpose of the first heat source 1 providing first heat to the corresponding partition 5.

[0097] In another alternative embodiment of the invention, such as Figure 1As shown, the heat exchange device 6 includes at least a first flow channel 601 and a second flow channel 602 for heat exchange (i.e., the liquid flowing through the first flow channel 601 can exchange heat with the liquid flowing through the second flow channel 602). The first flow channel 601 has a first inlet 6011 and a first outlet 6012, and the second flow channel 602 has a second inlet 6021 and a second outlet 6022. The flow control device 7 includes at least an inlet 701, a first outlet 703, and a second outlet 704. The inlet 701 of the flow control device 7 is connected to the outlet of the second heat source 2, and the first outlet 703 of the flow control device 7 is connected to the inlet of the second heat source 2. The second outlet 704 of the flow control device 7 is connected to the first inlet 6011 of the first flow channel 601, and the first outlet 6012 of the first flow channel 601 is connected to the inlet of the second heat source 2. Thus, the second heat provided by the second heat source 2 can be transferred to the first flow channel 601 of the heat exchange device 6 through the flow control device 7 and the flow path between the second heat source 2 and the first flow channel 601 of the heat exchange device 6. Then, heat exchange occurs between the liquid in the first flow channel 601 and the liquid in the second flow channel 602, and finally the second heat is transferred to the corresponding partition 5. After heat exchange, the liquid in the first flow channel 601 of the heat exchange device 6 is circulated back to the second heat source 2. The second outlet 6022 of the second flow channel 602 is connected to the outlet of the first heat source 1 in the corresponding partition 5 and / or the inlet of the water terminal 8 in the corresponding partition 5. The second inlet 6021 of the second flow channel 602 is connected to the outlet of the water terminal 8. The liquid from the water terminal 8 can flow back into the second flow channel 602 to participate in heat exchange with the liquid in the first flow channel 601, and after being heated, it flows back to the water terminal 8 for user use. In this embodiment, as... Figure 1 As shown, since the inlet 701 of the flow control device 7 is connected to the outlet of the second heat source 2, and the first outlet 703 of the flow control device 7 is connected to the inlet of the second heat source 2, when the second outlet 704 of the flow control device 7 is turned off, the second heat source 2 can stop providing the second heat to the corresponding zone 5. At this time, the liquid flowing out of the outlet of the second heat source 2 flows back to the second heat source 2 through the flow control device 7 and the flow path between the flow control device 7 and the second heat source 2.

[0098] Furthermore, such as Figure 1 , Figure 4 As shown, the flow control device 7 includes a three-way valve.

[0099] In this invention, the connection between the first heat source 1 and the second flow channel 602 of the heat exchange device 6 can be at least one of the following three methods:

[0100] Connection method 1: such as Figure 5As shown, the inlet of the first heat source 1 is connected to the outlet of the corresponding water terminal 8, the outlet of the first heat source 1 is connected to the second inlet 6021 of the corresponding second flow channel 602, and the second outlet 6022 of the second flow channel 602 is connected to the inlet of the corresponding water terminal 8. In this connection state, the heat exchange device 6 and the first heat source 1 are connected to the water terminal 8 in series. According to the heat demand of the zone 5, the first heat and the second heat can be provided to the corresponding zone 5 simultaneously to meet the heat demand of the corresponding zone 5.

[0101] Connection method two: such as Figure 6 As shown, the second inlet 6021 of the second flow channel 602 and the inlet of the first heat source 1 are both connected to the outlet of the corresponding water terminal 8. The second outlet 6022 of the second flow channel 602 and the outlet of the first heat source 1 are both connected to the inlet of the corresponding water terminal 8. In this connection state, the heat exchange device 6 and the first heat source 1 are connected to the water terminal 8 in parallel. Depending on the heat demand of the zone 5, only the first heat or the second heat can be provided to the corresponding zone 5, or both the first heat and the second heat can be provided to the corresponding zone 5 simultaneously to meet the heat demand of the corresponding zone 5.

[0102] Connection method three: such as Figure 7 As shown, the inlet of the first heat source 1 and the second inlet 6021 of the second flow channel 602 are both connected to the outlet of the corresponding water terminal 8. The outlet of the first heat source 1 is connected to the second inlet 6021 of the second flow channel 602, and the second outlet 6022 of the second flow channel 602 is connected to the inlet of the corresponding water terminal 8. In this connection state, depending on the heat demand of the zone 5, only the second heat can be provided to the corresponding zone 5, or both the first heat and the second heat can be provided to the corresponding zone 5 simultaneously to meet the heat demand of the corresponding zone 5.

[0103] In an optional embodiment of the present invention, such as Figure 4As shown, the heat supply system also includes a water distributor 9 and a water collector 10. The water distributor 9 has one inlet and multiple outlets, and the water collector 10 has one outlet and multiple inlets. The inlet of the water distributor 9 is used to connect to the outlet of the second heat source 2. The multiple outlets of the water distributor 9 are used to connect to one of the inlets of the water collector 10 and the first inlet 6011 of the first flow channel 601 in the multiple heat exchange devices 6, respectively. The multiple inlets of the water collector 10 are used to connect to at least one outlet of the water distributor 9 and the first outlet 6012 of the first flow channel 601 in the multiple heat exchange devices 6, respectively. The outlet of the water collector 10 is used to connect to the inlet of the second heat source 2. The distributor 9 diverts the heated liquid from the second heat source 2 to the first flow channels 601 of multiple heat exchange devices 6, allowing heat exchange with the liquid in the second flow channels 602 of the corresponding heat exchange devices 6, thus achieving the purpose of the second heat source 2 providing second heat to the corresponding partition 5. The collector 10 collects the liquid from the first flow channels 601 of the multiple heat exchange devices 6 after heat exchange and returns it to the second heat source 2 for heating. In this embodiment, there is at least one directly connected flow path between the distributor 9 and the collector 10, and a first valve element 13 is provided on this flow path to control its on / off state, which can control the liquid heated by the second heat source 2 to directly return to the second heat source 2, realizing the cyclic heating of the liquid by the second heat source 2.

[0104] Furthermore, such as Figure 1 As shown, a second valve element 11 is provided at the inlet of the second heat source 2 or on the pipeline connected to the inlet of the second heat source, and the return water of the second heat source 2 is controlled by the second valve element 11.

[0105] In an optional embodiment of the present invention, such as Figure 1 , Figure 4 As shown, in the direction of liquid flow, a circulation pump 12 is provided upstream of the inlet 701 of the flow control device 7. The circulation pump 12 serves as a power source and can drive the liquid in the flow path to circulate.

[0106] In an optional embodiment of the present invention, such as Figure 1 , Figure 4 As shown, the outlet of the first heat source 1 is connected to the second inlet 6021 of the second flow channel 602. Depending on the zone 5, the inlet of the first heat source 1 is connected to the outlet of the water terminal 8 and / or to the tap water source. If the corresponding zone 5 is a hot water supply zone, the inlet of the first heat source 1 can be connected to both the outlet of the water terminal 8 and the tap water source, thus enabling both hot water return and tap water intake. If the corresponding zone 5 is a heating zone, the inlet of the first heat source 1 can be connected to the outlet of the water terminal 8 to achieve heating return.

[0107] The features and advantages of the control method for the heat supply system of the present invention are as follows:

[0108] The control method of this heat supply system can provide first heat to multiple zones 5 through multiple first heat sources 1, and second heat sources 2 can provide second heat to multiple zones 5. During the heating process, multiple first controllers 3 acquire the second heat provided by the second heat source 2 required by multiple zones 5, and send the second heat provided by the second heat source 2 required by multiple zones 5 to the second controller 4 through communication between the first controller 3 and the second controller 4. The second controller 4 controls the working state of the second heat source 2 according to the second heat, so that while meeting the control requirements of each zone 5, it is not necessary to set up an independent second heat source 2 and a second controller 4 in each zone 5. This simplifies the heat supply system and control method, makes the heat supply more reasonable, and makes the heat supply system more universal and scalable.

[0109] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A control method for a heat supply system, characterized in that, The heat supply system includes: A plurality of first heat sources are used to provide first heat to at least a plurality of partitions, wherein the plurality of first heat sources correspond one-to-one with the plurality of partitions; A second heat source for providing a second heat source to the plurality of zones; A plurality of first controllers for controlling at least one of the plurality of first heat sources, wherein the plurality of first controllers correspond one-to-one with the plurality of first heat sources; A second controller is used to control the second heat source; the second controller communicates with the plurality of first controllers; Multiple heat exchange devices are respectively associated with the multiple partitions, and the multiple heat exchange devices correspond one-to-one with the multiple partitions. The liquid of the second heat source exchanges heat with the liquid of the first heat source and / or the liquid in the pipeline of the partition through the multiple heat exchange devices to provide second heat to the partition. The heat exchange devices and the first heat source are connected to the water terminal in parallel. At least two of the multiple partitions are located in different spatial positions; The partition includes at least a first partition and a second partition. The heat demand of the first partition has a lower priority than the heat demand of the second partition. When both the first partition and the second partition require the second heat source to provide the second heat, The control method includes: The first controllers acquire the second heat provided by the second heat source required by the multiple partitions; The second controller controls the second heat source to gradually increase the amount of the second heat supplied to the corresponding partition based on the second heat, until the heat demand of the partition is met; If the second heat source can provide the second heat to the first zone after reaching the maximum threshold, but still does not meet the heat demand of the second zone, then stop or reduce the second heat source from providing the second heat to the first zone. If the second heat source stops providing the second heat to the first partition, and the heat demand of the second partition is less than the sum of the second heat provided to the second partition by the second heat source and the first heat provided by the first heat source, then the second heat source resumes providing the second heat to the first partition. When there are multiple second partitions and different second partitions have different priorities, if the heat demand of the high-priority second partition is still not met after the second heat source stops providing the second heat to the first partition, then the second heat provided by the second heat source to at least one low-priority second partition is stopped or reduced, and the second heat of the lower-priority second partition is supplemented to the higher-priority second partition.

2. The control method for the heat supply system as described in claim 1, characterized in that, When at least one or both of the first heat sources fail to meet the heating demand of the corresponding zone, the second heat source provides the second heat to the corresponding zone.

3. The control method for the heat supply system as described in claim 2, characterized in that, When the first heat provided by at least one or at least two first heat sources to the corresponding partition is less than the heat demand of the corresponding partition, the corresponding first controller obtains the second heat required by the second heat source for the corresponding partition and sends it to the second controller, which then controls the second heat source to provide the second heat.

4. The control method for the heat supply system as described in claim 1, characterized in that, When the second heat source does not meet the heating demand of the zone, the first heat source corresponding to the zone provides the first heat.

5. The control method for the heat supply system as described in claim 4, characterized in that, When the second heat provided by the second heat source to the partition is less than the heat demand of the partition, the first controller corresponding to the partition obtains the first heat provided by the first heat source required by the partition, and controls the corresponding first heat source to provide the first heat.

6. The control method for the heat supply system as described in claim 1, characterized in that, When there are multiple first partitions, if the second heat source can provide the second heat to the maximum threshold and still does not meet the heat demand of the second partition, the second controller controls the second heat source to stop or reduce the supply of the second heat to some or all of the first partitions, or gradually increase the number of first partitions that are stopped from providing the second heat, until the heat demand of the second partition is met.

7. The control method for the heat supply system as described in claim 1, characterized in that, The first controller acquires the heat demand of the second partition; If the heat demand of the second zone is less than the sum of the second heat provided by the second heat source and the first heat provided by the first heat source; The first controller sends a signal to the second controller, which then controls the second heat source to resume providing the second heat to the first partition.

8. The control method for the heat supply system as described in claim 1, characterized in that, The first zone includes a heating zone, and the second zone includes a hot water supply zone.

9. The control method for the heat supply system as described in claim 1, characterized in that, The multiple partitions constitute a heat demand area, and the heat required by the heat demand area is supplied by the heat supply system. At least two of the multiple partitions have different heat demands.

10. The control method for the heat supply system as described in claim 1, characterized in that, The second heat source includes one or more boilers, and the step of controlling the operating state of the second heat source includes: Change the number of boilers in operation, and / or change the operating power of at least some of the boilers that are already in operation.

11. The control method for the heat supply system as described in claim 1, characterized in that, The second controller is one of the plurality of first controllers.

12. The control method for the heat supply system as described in claim 1 or 11, characterized in that, The plurality of first controllers are independent of the first heat source, and the plurality of first controllers are electrically connected to the corresponding first heat source. The second controller is independent of the second heat source, and the second controller is electrically connected to the second heat source and the plurality of first controllers.

13. The control method for the heat supply system as described in claim 1, characterized in that, Multiple flow control devices are provided in the flow path between the second heat source and the multiple heat exchange devices. The multiple flow control devices are used to control the second heat provided by the second heat source to the multiple zones respectively.

14. The control method for the heat supply system as described in claim 13, characterized in that, The heat exchange device includes at least a first flow channel and a second flow channel for heat exchange, the first flow channel having a first inlet and a first outlet, and the second flow channel having a second inlet and a second outlet. The heat supply system includes multiple heat exchange devices corresponding to the multiple zones respectively. The flow control device includes at least an inlet and an outlet. The inlet is used to connect to the outlet of the second heat source, and the outlet is used to connect to the first inlet of the first flow channel. The first outlet of the first flow channel is connected to the inlet of the second heat source. The second outlet of the second flow channel is connected to the inlet of the corresponding water-using terminal in the partition, and the second inlet of the second flow channel is connected to the outlet of the first heat source and / or to the outlet of the water-using terminal. Alternatively, the outlet of the first heat source is connected to the inlet of the water-using terminal in the corresponding partition, the inlet of the first heat source is connected to the second outlet of the second flow channel, and the second inlet of the second flow channel is connected to the outlet of the water-using terminal in the corresponding partition.

15. The control method for the heat supply system as described in claim 14, characterized in that, The flow control device includes at least an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the second heat source, the first outlet is connected to the inlet of the second heat source, the second outlet is connected to the first inlet of the first flow channel, and the first outlet of the first flow channel is connected to the inlet of the second heat source.

16. The control method for the heat supply system as described in claim 14, characterized in that, The second inlet of the second flow channel and the inlet of the first heat source are both used to connect to the outlet of the water-using terminal, and the second outlet of the second flow channel and the outlet of the first heat source are both used to connect to the inlet of the water-using terminal.

17. The control method for the heat supply system as described in claim 14, characterized in that, The heat supply system includes a water distributor and a water collector. The water distributor has one inlet and multiple outlets, and the water collector has one outlet and multiple inlets. The inlet of the water distributor is connected to the outlet of the second heat source. The multiple outlets of the water distributor are respectively connected to one of the inlets of the water collector and the first inlet of the first flow channel. The multiple inlets of the water collector are respectively connected to at least one outlet of the water distributor and the first outlet of the first flow channel. The outlet of the water collector is connected to the inlet of the second heat source.

18. The control method for the heat supply system as described in claim 14, characterized in that, In the direction of liquid flow, a circulation pump for driving the liquid to circulate is provided upstream of the inlet of the flow control device.

19. The control method for the heat supply system as described in claim 14, characterized in that, The outlet of the first heat source is connected to the second inlet of the second flow channel, and the inlet of the first heat source is connected to the outlet of the water-using terminal and / or to a tap water source.

20. The control method for the heat supply system as described in claim 15, characterized in that, The flow control device includes a three-way valve.

21. The control method for the heat supply system as described in any one of claims 13 to 20, characterized in that, The plurality of heat exchange devices include plate heat exchangers and / or volumetric heat exchangers.

22. The control method for the heat supply system as described in claim 1, characterized in that, The first heat source includes one or more heat pumps, and the second heat source includes one or more boilers.

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