Multi-energy heating and ventilation system and hydraulic device thereof

Abstract

The utility model provides a multi-energy heating and ventilation system and a hydraulic device thereof. The hydraulic device comprises a machine shell, a heat storage heat preservation water tank arranged in the machine shell, at least two sets of primary side circulation pipelines and at least two sets of secondary side circulation pipelines, and at least two sets of primary side circulation pipeline connectors and at least two sets of secondary side circulation pipeline connectors are arranged on the bottom wall of the machine shell. The at least two groups of primary side circulating pipeline interfaces are respectively connected with different heat source systems, and the secondary side circulating pipeline interface is connected with a heating system; the primary side circulation pipeline comprises a primary side water outlet pipeline and a primary side water return pipeline which are connected with the primary side circulation pipeline connector and a primary side water inlet and outlet of the heat storage and heat preservation water tank. And the secondary side circulation pipeline comprises a secondary side water outlet pipeline and a secondary side water return pipeline which are connected with the secondary side water inlet / outlet of the heat storage and heat preservation water tank and the secondary side circulation pipeline interface. According to the utility model, the use scene requirements of secondary systems with different heat sources are met, and each pipeline is compressed into the shell, so that a complex pipe network is integrated and simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of heating systems, in particular to a multi-energy HVAC system and its hydraulic device. Background Art

[0002] In household air source heat pump and gas heating furnace HVAC systems, due to problems such as large end resistance, insufficient system water capacity, and changes in end flow load, the performance of the host is affected and restricted, and various frequent operating conditions at the end cannot be met. To improve the comfort of users' heating needs and address the problems of various factors changing in the end circulation system, the emergence of the secondary system better solves this kind of demand at the end, can maintain the stability of the system, and will also be more energy-efficient.

[0003] Since the water circuit of the secondary system is relatively complex and requires a large space area, it is difficult in pipeline construction, installation, etc. How to simply layout and control the water pipe network of the secondary system, improve the installation efficiency, and facilitate after-sales maintenance has become an important technical problem that needs to be solved by those in this field.

[0004] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0005] The technical problem to be solved by the present utility model is to at least overcome some deficiencies of the prior art, and provide a hydraulic device for a multi-energy HVAC system. By integrating the design, each pipeline is connected at the hub and compressed into the interior of the casing, saving space, making the complex pipe network integrated and simplified, and facilitating maintenance.

[0006] To solve the above technical problem, the present utility model provides a hydraulic device for a multi-energy HVAC system, including:

[0007] A casing, on which a primary side circulation pipeline interface and a secondary side circulation pipeline interface are provided. Among them, at least two groups of the primary side circulation pipeline interfaces are provided, and at least two groups of the primary side circulation pipeline interfaces are configured to be respectively connected to different heat source systems, and the secondary side circulation pipeline interface is configured to be connected to a heating system;

[0008] A heat storage and insulation water tank, which is arranged inside the casing;

[0009] At least two groups of primary side circulation pipelines, each group of primary side circulation pipelines including a primary side outlet pipeline and a primary side return pipeline. Among them, the primary side outlet pipeline connects the primary side outlet pipeline interface in the primary side circulation pipeline interface with the primary side water outlet of the heat storage and insulation water tank, and the primary side return pipeline connects the primary side return pipeline interface in the primary side circulation pipeline interface with the primary side water inlet of the heat storage and insulation water tank;

[0010] The secondary-side circulation pipeline includes a secondary-side water outlet pipeline and a secondary-side water return pipeline. Among them, the secondary-side water outlet pipeline is connected to the secondary-side water outlet of the heat storage and insulation water tank and the secondary-side water outlet pipeline interface in the secondary-side circulation pipeline interface, and the secondary-side water return pipeline is connected to the secondary-side water inlet of the heat storage and insulation water tank and the secondary-side water return pipeline interface in the secondary-side circulation pipeline interface.

[0011] In some embodiments, the secondary-side water outlet of the heat storage and insulation water tank is higher than the primary-side water inlet of the heat storage and insulation water tank.

[0012] In some embodiments, a primary-side water pump is provided on the primary-side water outlet pipeline or the primary-side water return pipeline of at least one group of primary-side circulation pipelines.

[0013] In some embodiments, a secondary-side water pump is provided on the secondary-side water outlet pipeline or the secondary-side water return pipeline.

[0014] In some embodiments, the hydraulic device for a multi-energy HVAC system further includes an expansion tank;

[0015] The expansion tank is provided on one of the primary-side water outlet pipelines of the at least two groups of primary-side circulation pipelines.

[0016] In some embodiments, a cleaning window is provided at the bottom of the heat storage and insulation water tank, and a sewage discharge window corresponding to the cleaning window is provided on the bottom wall of the casing.

[0017] In some embodiments, an exhaust valve is provided at the top of the heat storage and insulation water tank, and an avoidance opening corresponding to the exhaust valve is provided on the top wall of the casing.

[0018] The present utility model further provides a multi-energy HVAC system, including the above-mentioned hydraulic device;

[0019] It further includes a heating system and at least two heat source systems;

[0020] Among them, the at least two heat source systems are respectively connected to at least two groups of the primary-side circulation pipeline interfaces in a corresponding manner, and the heating system is connected to the secondary-side circulation pipeline interface.

[0021] In some embodiments, the at least two heat source systems are selected from an air source heat pump system, a ground source heat pump system, a gas hot water system, and a solar hot water system.

[0022] In some embodiments, the heating system includes a fan coil unit assembly, and / or a radiator assembly, and / or a floor heating coil assembly, which are arranged in parallel. The inlet pipelines of the fan coil unit assembly, the radiator assembly, and the floor heating coil assembly are all connected to the secondary side outlet pipeline, and the outlet pipelines of the fan coil unit assembly, the radiator assembly, and the floor heating coil assembly are all connected to the secondary side return pipeline.

[0023] After adopting the above technical solutions, the present utility model has the following beneficial effects compared with the prior art.

[0024] (1) The hydraulic device for a multi-energy HVAC system provided by the present utility model includes a housing and a heat storage and insulation water tank arranged inside the housing. At least two groups of primary side circulation pipeline interfaces and secondary side circulation pipeline interfaces are arranged on the bottom wall of the housing, which are respectively used to connect to different heat source systems and heating systems. It can meet the usage scenario requirements of the secondary systems of different heat sources, and through integrated design, the various pipelines are hub-connected and compressed into the housing, saving space, integrating and simplifying the complex pipe network, and facilitating maintenance.

[0025] (2) In the hydraulic device for a multi-energy HVAC system provided by the present utility model, by setting the secondary side water outlet of the heat storage and insulation water tank at a position higher than the primary side water inlet of the heat storage and insulation water tank, it more conforms to the water temperature stratification state inside the heat storage and insulation water tank, which is beneficial to improving the system energy efficiency.

[0026] (3) In the hydraulic device for a multi-energy HVAC system provided by the present utility model, by setting the expansion tank on the primary side return pipeline, the expansion tank is located at a position where the system water temperature is relatively low, that is, the inlet of the water pump. Such a position selection helps to maximize the role of the expansion tank and ensure the stable operation of the system.

[0027] (4) In the hydraulic device for a multi-energy HVAC system provided by the present utility model, by setting a cleaning window at the bottom of the heat storage and insulation water tank and corresponding cleaning windows on the bottom wall of the housing, it is convenient to clean the dirt of the heat storage and insulation water tank, relieve the system problems caused by water scale, and improve the operation efficiency of the system. Description of the Drawings

[0028] The drawings, as a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0029] Figure 1It is a schematic diagram of a multi - energy heating and ventilation system according to an exemplary embodiment of the present utility model;

[0030] Figure 2 It is a schematic diagram of a hydraulic device for a multi - energy heating and ventilation system according to an exemplary embodiment of the present utility model.

[0031] In the figure: 100, multi - energy heating and ventilation system;

[0032] 110, hydraulic device; 111, housing; 112, heat storage and insulation water tank; 1121, cleaning window; 1122, exhaust valve; 1123, expansion tank; 113, primary - side circulation pipeline interface; 1131, primary - side outlet pipeline interface; 1132, primary - side return pipeline interface; 114, secondary - side circulation pipeline interface; 1141, secondary - side outlet pipeline interface; 1142, secondary - side return pipeline interface; 115, primary - side circulation pipeline; 1151, primary - side outlet pipeline; 1152, primary - side return pipeline; 116, secondary - side circulation pipeline; 1161, secondary - side outlet pipeline; 1162, secondary - side return pipeline; 117, tap water pipeline interface; 118, drainage pipeline interface;

[0033] 120, air - source heat pump system;

[0034] 130, gas - fired hot - water system;

[0035] 140, heating system; 141, fan - coil unit assembly; 142, radiator assembly;

[0036] 150, first circulation pipeline;

[0037] 160, second circulation pipeline;

[0038] 170, third circulation pipeline;

[0039] 180, fourth circulation pipeline.

[0040] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0042] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0043] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] As described in the background art of the present utility model, in the relevant HVAC system, due to the relatively complex water circuit of the secondary system, a large space area is required, and the pipeline construction and installation are difficult. How to simply layout and control the water pipeline network of the secondary system, improve the installation efficiency, and facilitate after-sales maintenance has become an important technical problem that needs to be solved by those skilled in the art.

[0045] To solve the above problems, the present utility model provides a hydraulic device for a multi-energy HVAC system, which includes a casing and a heat storage and insulation water tank disposed inside the casing. At least two sets of primary side circulation pipeline interfaces and a set of secondary side circulation pipeline interfaces are provided on the bottom wall of the casing, which are respectively used to connect with different heat source systems and heating systems, and can meet the usage scenario requirements of the secondary systems of different heat sources. Moreover, through the integrated design, each pipeline is connected at the hub and compressed into the casing, saving space, making the complex pipe network integrated and simplified, and facilitating maintenance. Furthermore, by integrating the complex system pipe network into one, the on-site non-standard installation is converted into factory standardized, integrated, professional, and large-scale production, with reliable quality, small occupied space, and high installation efficiency.

[0046] The following describes the preferred technical solutions of the multi-energy HVAC system 100 and its hydraulic device 110 of the present utility model with reference to the accompanying drawings.

[0047] Figure 1 Fig. 1 shows a multi-energy HVAC system 100 provided according to an exemplary embodiment of the present utility model.

[0048] As Figure 1As shown, the multi - energy heating and ventilation system 100 includes a hydraulic device 110, a heating system 140, and at least two heat source systems. Among them, the heating system 140 includes a fan - coil unit assembly 141 arranged in parallel, and / or a radiator assembly 142, and / or a floor heating coil assembly. That is, the fan - coil unit assembly 141, the radiator assembly 142, and the floor heating coil assembly can be selected and set according to user needs. At least two heat source systems can be selected from an air - source heat pump system 120, a ground - source heat pump system, a gas - fired hot - water system 130, and a solar - hot - water system, and are used to provide water at a set temperature for the heating system 140. The hydraulic device 110 is a hydraulic hub arranged between the heating system 140 and at least two heat source systems, so that two independent working circulating water circuits are formed between the heat source system and the hydraulic device 110 and between the hydraulic device 110 and the heating system 140 respectively. The corresponding water paths of each are shorter, the energy efficiency ratio of the system operation is improved, and the overall operation of the system is more stable and it is easier to troubleshoot problems existing during operation.

[0049] Figure 2 Figure 4 shows a hydraulic device 110 for a multi - energy heating and ventilation system 100 according to an exemplary embodiment of the present invention.

[0050] As Figure 2 shown, the hydraulic device 110 includes a housing 111 and a heat - storage and heat - insulation water tank 112 arranged inside the housing 111. At least two groups of primary - side circulation pipeline interfaces 113 and a group of secondary - side circulation pipeline interfaces 114 are arranged on the bottom wall of the housing 111. Among them, at least two groups of the primary - side circulation pipeline interfaces 113 are configured to be connected to different heat source systems respectively, and the secondary - side circulation pipeline interface 114 is configured to be connected to the heating system 140. Refer to Figure 1 . Inside the housing 111, a group of secondary - side circulation pipelines 116 and at least two groups of primary - side circulation pipelines 115 are also arranged. Each group of primary - side circulation pipelines 115 includes a primary - side outlet pipeline 1151 and a primary - side return pipeline 1152 connecting the primary - side circulation pipeline interface 113 and the primary - side inlet and outlet of the heat - storage and heat - insulation water tank 112. The secondary - side circulation pipeline 116 includes a secondary - side outlet pipeline 1161 and a secondary - side return pipeline 1162 connecting the secondary - side inlet and outlet of the heat - storage and heat - insulation water tank 112 and the secondary - side circulation pipeline interface 114.

[0051] At least one primary side water pump is provided on the primary side water outlet pipe 1151 or the primary side water return pipe 1152 of at least one group of primary side circulation pipelines 115, which is used to drive the water flow to circulate between the heat source system and the heat storage and insulation water tank 112. Preferably, the primary side water pump is connected to the primary side water outlet pipe 1151. A secondary side water pump is provided on the secondary side water outlet pipe 1161 or the secondary side water return pipe 1162, which is used to drive the water flow to circulate between the heat storage and insulation water tank 112 and the heating system 140. Preferably, the secondary side water pump is connected to the secondary side water outlet pipe 1161.

[0052] Specifically, each group of primary side circulation pipeline interfaces 113 includes a primary side water outlet pipe interface 1131 and a primary side water return pipe interface 1132. The primary side water outlet pipe interface 1131 is used to connect the primary side water outlet pipe 1151 arranged inside the casing 111 and the first circulation pipeline 150 arranged outside the casing 111 and connected to the heat source system; the primary side water return pipe interface 1132 is used to connect the primary side water return pipe 1152 arranged inside the casing 111 and the second circulation pipeline 160 arranged outside the casing 111 and connected to the heat source system. The secondary side circulation pipeline interface 114 includes a secondary side water outlet pipe interface 1141 and a secondary side water return pipe interface 1142. The secondary side water outlet pipe interface 1141 is used to connect the secondary side water outlet pipe 1161 arranged inside the casing 111 and the third circulation pipeline 170 arranged outside the casing 111 and connected to the heating system 140, and the secondary side water return pipe interface 1142 is used to connect the secondary side water return pipe 1162 arranged inside the casing 111 and the fourth circulation pipeline 180 arranged outside the casing 111 and connected to the heating system 140.

[0053] In order to Figure 1Taking the operating condition where the multi - energy HVAC system 100 shown is used to increase the temperature of the user space as an example, the high - temperature hot water in the air - source heat pump system 120 and the gas - fired hot - water system 130 enters the heat - storage and insulation water tank 112 through the second circulation pipeline 160, after passing through the primary - side return - water pipeline interface 1132 and then through the primary - side return - water pipeline 1152. After buffering in the heat - storage and insulation water tank 112, the high - temperature hot water enters the water - distribution manifold through the secondary - side outlet pipeline 1161, after passing through the secondary - side outlet - pipeline interface 1141 and then through the third circulation pipeline 170. The water - distribution manifold distributes the high - temperature hot water to the fan - coil unit assembly 141 and the radiator assembly 142. The low - temperature hot water after heat exchange in the fan - coil unit assembly 141 and the radiator assembly 142 converges in the water - distribution manifold and then returns to the heat - storage and insulation water tank 112 through the fourth circulation pipeline 180, after passing through the secondary - side return - water pipeline interface 1142 and then through the secondary - side return - water pipeline 1162. After buffering in the heat - storage and insulation water tank 112, the low - temperature hot water returns to the air - source heat pump system 120 and the gas - fired hot - water system 130 through the primary - side outlet pipeline 1151, after passing through the primary - side outlet - pipeline interface 1131 and then through the first circulation pipeline 150. Such a cycle realizes the purpose of regulating the temperature, humidity and air quality of the user space.

[0054] In some embodiments, a tap - water pipeline interface 117 is further provided at the bottom of the housing 111. One end of the tap - water pipeline interface 117 is connected to the water - supply end of the heat - storage and insulation water tank 112, and the other end is configured to be connected to the tap - water supply end for replenishing water to the multi - energy HVAC system 100 to ensure the stable and efficient operation of the system.

[0055] In some embodiments, a drain - pipeline interface 118 is further provided at the bottom of the housing 111. One end of the drain - pipeline interface 118 is connected to the drain end of the heat - storage and insulation water tank 112, and the other end is configured to be connected to a water - treatment end such as a sewer for draining the water of the multi - energy HVAC system 100.

[0056] It can be understood that the heat - storage and insulation water tank 112 is equipped with a water - level detection sensor for measuring the water level. The water - level detection sensor uploads the detection signal to the control unit of the multi - energy HVAC system 100, and the control unit controls the opening and closing of the water - replenishing valve and the drain valve according to the water - level detection signal. As an example, when the water - level detection sensor detects that the water level in the heat - storage and insulation water tank 112 is lower than the preset water - level range value, the control unit controls the water - replenishing valve to open to replenish water into the heat - storage and insulation water tank 112. When the water - level detection sensor detects that the water level in the heat - storage and insulation water tank 112 is within the preset water - level range value, the control unit controls the water - replenishing valve to close. When the water - level detection sensor detects that the water level in the heat - storage and insulation water tank 112 exceeds the preset water - level range value, the control unit controls the drain valve to open.

[0057] In some embodiments, the secondary side water outlet of the heat storage and insulation water tank 112 is higher than the primary side water inlet of the heat storage and insulation water tank 112. In this way, the secondary side water outlet is located at a position with relatively higher water temperature in the heat storage and insulation water tank 112, which is more in line with the water temperature stratification state in the heat storage and insulation water tank 112 and is beneficial to improving the system energy efficiency.

[0058] In some embodiments, the hydraulic device 110 further includes an expansion tank 1123. The expansion tank 1123 is arranged on one of the primary side outlet pipelines 1151 of the at least two groups of primary side circulation pipelines 115, so that the expansion tank 1123 is located at a position with relatively lower water temperature in the heat storage and insulation water tank 112, that is, the inlet of the primary side water pump. Such a position selection helps to maximize the role of the expansion tank 1123 and ensure the stable operation of the system.

[0059] In some embodiments, a dirt cleaning window 1121 is arranged at the bottom of the heat storage and insulation water tank 112, and a sewage discharge window corresponding to the dirt cleaning window 1121 is arranged on the bottom wall of the machine shell 111, which is convenient for cleaning the dirt in the heat storage and insulation water tank 112, solving the system problems caused by water scale and improving the operation efficiency of the system.

[0060] In some embodiments, an exhaust valve 1122 is arranged at the top of the heat storage and insulation water tank 112, and an avoidance opening corresponding to the exhaust valve 1122 is arranged on the top wall of the machine shell 111 to adjust the air pressure inside the heat storage and insulation water tank 112 and prevent water leakage at each water inlet and outlet of the heat storage and insulation water tank 112 due to excessive air pressure.

[0061] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of the present invention can make some changes or modifications to the equivalent embodiments by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A hydraulic device for a multi - energy heating and ventilation system, characterized in that, Comprising: A machine case, on which a primary side circulation pipeline interface and a secondary side circulation pipeline interface are provided. Among them, at least two groups of the primary side circulation pipeline interfaces are provided, and at least two groups of the primary side circulation pipeline interfaces are configured to be respectively connected to different heat source systems, and the secondary side circulation pipeline interface is configured to be connected to a heating system; A heat storage and insulation water tank, which is arranged inside the machine case; At least two groups of primary side circulation pipelines, each group of primary side circulation pipelines including a primary side water outlet pipeline and a primary side water return pipeline. Among them, the primary side water outlet pipeline connects the primary side water outlet pipeline interface in the primary side circulation pipeline interface and the primary side water outlet of the heat storage and insulation water tank, and the primary side water return pipeline connects the primary side water return pipeline interface in the primary side circulation pipeline interface and the primary side water inlet of the heat storage and insulation water tank; A secondary side circulation pipeline, including a secondary side water outlet pipeline and a secondary side water return pipeline. Among them, the secondary side water outlet pipeline connects the secondary side water outlet of the heat storage and insulation water tank and the secondary side water outlet pipeline interface in the secondary side circulation pipeline interface, and the secondary side water return pipeline connects the secondary side water inlet of the heat storage and insulation water tank and the secondary side water return pipeline interface in the secondary side circulation pipeline interface.

2. The hydraulic device for a multi - energy heating and ventilation system according to claim 1, wherein The secondary side water outlet of the heat storage and insulation water tank is higher than the primary side water inlet of the heat storage and insulation water tank.

3. The hydraulic device for a multi - energy heating and ventilation system according to claim 1, wherein A primary side water pump is arranged on the primary side water outlet pipeline or the primary side water return pipeline of at least one group of primary side circulation pipelines.

4. The hydraulic device for a multi - energy heating and ventilation system according to claim 1, wherein A secondary side water pump is arranged on the secondary side water outlet pipeline or the secondary side water return pipeline.

5. The hydraulic device for a multi - energy HVAC system according to any one of claims 1 to 4, characterized in that, It further includes an expansion tank; The expansion tank is arranged on one of the primary side water outlet pipelines of at least two groups of the primary side circulation pipelines.

6. The hydraulic device for a multi - energy heating and ventilation system according to any one of claims 1 to 4, wherein A cleaning window is arranged at the bottom of the heat storage and insulation water tank, and a sewage discharge window corresponding to the cleaning window is arranged on the bottom wall of the machine case.

7. The hydraulic device for a multi - energy heating and ventilation system according to any one of claims 1 to 4, wherein An exhaust valve is arranged at the top of the heat storage and insulation water tank, and an avoidance opening corresponding to the exhaust valve is arranged on the top wall of the machine case.

8. A multi-energy HVAC system, characterized in that, Comprising the hydraulic device according to any one of claims 1 to 7; It further includes a heating system and at least two heat source systems; Among them, the at least two heat source systems are respectively connected to at least two groups of the primary side circulation pipeline interfaces correspondingly, and the heating system is connected to the secondary side circulation pipeline interface.

9. The multi - energy heating and ventilation system according to claim 8, wherein The at least two heat source systems are selected from an air source heat pump system, a ground source heat pump system, a gas hot water system, and a solar hot water system.

10. The multi - energy heating and ventilation system according to claim 8, wherein The heating system includes a fan coil unit assembly arranged in parallel, and / or a radiator assembly, and / or a floor heating coil assembly. The inlet pipelines of the fan coil unit assembly, the radiator assembly, and the floor heating coil assembly are all connected to the secondary side outlet pipeline, and the outlet pipelines of the fan coil unit assembly, the radiator assembly, and the floor heating coil assembly are all connected to the secondary side return pipeline.

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