Energy complementary radiation air conditioning device and control method thereof

Abstract

The invention discloses an energy complementary radiation air conditioning device and a control method thereof, and belongs to the technical field of air conditioners. The energy complementary radiation air conditioning device comprises a heat pump, a radiation tail end and a boiler, the heat pump comprises a first water supply pipe and a first water return pipe, the heat pump is connected to a water inlet and a water outlet of the radiation tail end through the first water supply pipe and the first water return pipe, and the boiler comprises a second water supply pipe and a second water return pipe. The boiler is connected to the first water supply pipe through a second water supply pipe and connected to the first water supply pipe through a second water return pipe. The distance between the second water supply pipe and the second water return pipe on the first water supply pipe is smaller than or equal to five times of the diameter of the first water supply pipe. The main purpose of the invention is that when the heat pump defrosts frequently or the heat supply capacity is insufficient due to too low outdoor temperature, the boiler is connected to the water supply pipeline of the heat pump in parallel, and a small part of heat is supplemented by the boiler, so that the indoor comfort of a user in winter is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and more specifically, to a radiation air-conditioning device with energy complementarity and its control method. Background Art

[0002] In recent years, with the improvement of people's material life, people have higher and higher requirements for the indoor environment, and the radiation air-conditioning system has developed rapidly. In the selection of energy sources for the radiation air-conditioning system, air-source heat pumps account for almost more than 95% due to their natural energy-saving advantages. The working principle of an air-source heat pump is to absorb the heat outside into the room by contacting the fins arranged on the outdoor unit with the outside air. Therefore, the air-source heat pump has an inherent defect that in winter, as the outdoor temperature decreases, the heating capacity rapidly decays. Especially when the temperature is around 0 degrees and the air humidity is relatively high, the fin temperature is too low and frosting occurs. When frosting occurs, the heat pump needs to reverse the indoor temperature to defrost, resulting in the heat pump always allocating a part of its power for frequent defrosting. As a result, the water temperature in the outlet pipe of the heat pump cannot reach the temperature set by the user, and the heating effect is not satisfactory. Summary of the Invention

[0003] The content part of this application is used to introduce concepts in a brief form, and these concepts will be described in detail in the following detailed implementation part. The content part of this application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0004] Some embodiments of this application propose a radiation air-conditioning device with energy complementarity and its control method to solve the technical problems mentioned in the above background art part.

[0005] As the first aspect of this application, some embodiments of this application provide a radiation air-conditioning device with energy complementarity, including a heat pump, a radiation terminal, and a boiler. The heat pump includes a first water supply pipe and a first water return pipe. The heat pump is connected to the water inlet of the radiation terminal through the first water supply pipe, and the heat pump is connected to the water outlet of the radiation terminal through the first water return pipe. The boiler includes a second water supply pipe and a second water return pipe. The boiler is connected to the first water supply pipe through the second water supply pipe, and the boiler is connected to the first water supply pipe through the second water return pipe. Wherein, the distance between the second water supply pipe and the second water return pipe on the first water supply pipe is less than or equal to 5 times the diameter of the first water supply pipe.

[0006] Further, a first water pump is provided in the heat pump, and a second water pump is provided in the boiler. The flow rate of the first water pump is greater than or equal to 3 times the flow rate of the second water pump.

[0007] Further, a one-way valve is provided on the second water supply pipe.

[0008] Further, it further includes a dual cold source integrated machine, which includes a third water supply pipe and a third water return pipe. The third water supply pipe is connected to the first water supply pipe, and the third water return pipe is connected to the first water return pipe.

[0009] Further, it further includes:

[0010] A heat pump status detection device for detecting the actual working condition of the heat pump;

[0011] A boiler operation device for opening or closing the boiler according to an input control signal;

[0012] A control device for sending a control signal to the boiler operation device according to the control signal sent by the heat pump status detection device to control the boiler operation device.

[0013] Further, the heat pump status detection device includes:

[0014] A compressor frequency detection unit for detecting the frequency when the compressor is working;

[0015] A first water supply pipe outlet temperature detection unit for detecting the water temperature in the first water supply pipe;

[0016] Wherein, the control device sends a control signal to the boiler operation device according to the control signals sent by the compressor frequency detection unit and the first water supply pipe outlet temperature detection unit to control the boiler operation device.

[0017] Further, the boiler operation device includes:

[0018] An ignition device for connecting the ignition circuit of the boiler device according to a received control signal;

[0019] An exhaust fan solenoid valve for opening or closing the exhaust fan of the boiler device according to a received control signal;

[0020] A second water pump motor electromagnetic device for opening or closing the second water pump according to a received control signal;

[0021] An oxygen pipeline solenoid valve for controlling the opening and closing degree of the oxygen pipeline according to a received control signal;

[0022] Wherein, the control device sends control signals to the ignition device, the exhaust fan solenoid valve, the second water pump motor electromagnetic device, and the oxygen pipeline solenoid valve according to the control signal sent by the heat pump status detection device.

[0023] Further, the control device includes a main controller and a boiler controller, and the main controller is electrically connected to the boiler controller to receive electrical signals from each other.

[0024] Further, the energy complementary radiant air-conditioning device further includes:

[0025] A refrigerant pressure sensor for detecting the pressure value of the refrigerant in the condenser;

[0026] The control device sends control signals to the ignition device, the exhaust fan solenoid valve, the second water pump motor electromagnetic device, and the oxygen pipeline solenoid valve according to the control signals sent by the refrigerant pressure sensor.

[0027] As another aspect of the present application, some embodiments of the present application provide a control method for an energy complementary radiant air-conditioning device, where the energy complementary radiant air-conditioning device includes the above-mentioned energy complementary radiant air-conditioning device, and the control method includes:

[0028] The control device detects the water temperature and the compressor frequency data in the first water supply pipe according to the heat pump state detection device. When the compressor frequency reaches the maximum frequency and maintains for a time t1, and the temperature T1 in the first water supply pipe is less than T - 2°C, where T is the temperature set by the user, the control device sends a control signal to the boiler operation device to turn on the boiler.

[0029] Further, the control method further includes:

[0030] The main controller receives the refrigerant pressure value detected by the refrigerant pressure sensor in the condenser,

[0031] When the refrigerant pressure value in the condenser is greater than the set critical value, the main controller sends a control signal to the boiler controller, and the boiler controller sends a control signal to the boiler operation device to turn on the boiler;

[0032] When the refrigerant pressure value in the condenser is less than the set critical value, the main controller sends a control signal to the boiler controller, and the boiler controller sends a control signal to the boiler operation device to turn off the boiler after maintaining for a time t1.

[0033] Further, the energy complementary radiant air-conditioning device further includes a second water supply pipe outlet water temperature detection unit for detecting the water temperature in the second water supply pipe;

[0034] The control method further includes:

[0035] When T - T1 ≥ 10°C, the control device sends a control signal to the oxygen pipeline solenoid valve to adjust the opening angle of the oxygen pipeline solenoid valve so that the water temperature in the second water supply pipe detected by the second water supply pipe outlet water temperature detection unit is equal to the water temperature in the first water supply pipe;

[0036] When 10°C > T - T1 ≥ 5°C, the control device sends a control signal to the oxygen pipeline solenoid valve, and adjusts the opening angle of the oxygen pipeline solenoid valve so that the water temperature in the second water supply pipeline detected by the second water supply pipeline outlet temperature detection unit is equal to the water temperature in the first water supply pipeline minus 2°C;

[0037] When T - T1 < 5°C, the control device sends a control signal to the oxygen pipeline solenoid valve, and adjusts the opening angle of the oxygen pipeline solenoid valve so that the water temperature in the second water supply pipeline detected by the second water supply pipeline outlet temperature detection unit is equal to the water temperature in the first water supply pipeline minus 4°C.

[0038] Furthermore, the control method further includes:

[0039] When T1 is more than 4°C higher than the temperature set by the user and the boiler has been continuously operating for more than 5 minutes, the control device sends a control signal to the boiler operating device to shut down the boiler.

[0040] Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects:

[0041] When the heat pump defrosts frequently or the heating capacity is insufficient due to too low outdoor temperature, the present invention connects the boiler in parallel to the water supply pipeline of the heat pump, and a small part of heat is supplemented by the boiler, which can ensure the indoor comfort of users in winter and solve the problem of domestic hot water for users at the same time. And the present invention directly connects the supply and return water pipes of the boiler to the water supply pipe of the heat pump, making the water flow very stable and not causing problems of mutual influence between the first water pump of the heat pump and the second water pump of the boiler. The small water pump of the boiler only needs to overcome the resistance between the boiler and the system water supply pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings forming a part of this application are used to provide a further understanding of this application, making other features, objects, and advantages of this application more obvious. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation of this application.

[0043] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the elements and elements are not necessarily drawn to scale.

[0044] Figure 1 is a schematic diagram of the connection position of the heat pump and the boiler according to an embodiment of this application;

[0045] The meanings of the reference numerals in the drawings:

[0046] 100, heat pump; 110, first water supply pipe; 120, first return water pipe;

[0047] 200. Radiation end;

[0048] 300. Boiler; 310. Second water supply pipe; 320. Second water return pipe; 330. Check valve;

[0049] 400. Dual cold source integrated machine. Detailed implementation manners

[0050] Embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0051] In addition, it should be noted that for the sake of convenience of description, only parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0052] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependent relationships.

[0053] It should be noted that the modifications of "one" and "plural" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless clearly specified otherwise in the context, it should be understood as "one or more".

[0054] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0055] The present disclosure will be described in detail below with reference to the drawings and in combination with the embodiments.

[0056] As Figure 1As shown in the figure, a radiation air-conditioning device with complementary energy sources according to an embodiment of the present application includes a heat pump 100, a radiation terminal 200, and a boiler 300. The heat pump 100 includes a first water supply pipe 110 and a first water return pipe 120. The heat pump 100 is connected to the water inlet of the radiation terminal 200 through the first water supply pipe 110, and the heat pump 100 is connected to the water outlet of the radiation terminal 200 through the first water return pipe 120. The boiler 300 includes a second water supply pipe 310 and a second water return pipe 320. The boiler 300 is connected to the first water supply pipe 110 through the second water supply pipe 310, and the boiler 300 is connected to the first water supply pipe 110 through the second water return pipe 320. Wherein, the distance between the second water supply pipe 310 and the second water return pipe 320 on the first water supply pipe 110 is less than or equal to 5 times the diameter of the first water supply pipe 110.

[0057] Specifically, when the heat pump 100 system is operating normally for heating, the refrigerant (i.e., the refrigerant medium) is compressed into a high-temperature and high-pressure gas under the action of the compressor, enters the heat exchanger (condenser) of the outdoor unit to dissipate heat to the outside world, and then enters the heat exchanger (evaporator) of the indoor unit to absorb heat after passing through the throttling device to reduce the pressure, realizing indoor heating. Fins are provided on the condenser. After the fins are in full contact with the outside air, the heat in the air is absorbed and introduced into the room. A plate heat exchanger is also provided in the heat pump 100. The refrigerant absorbs heat into the pipeline through the plate heat exchanger and transfers it to the radiation terminal 200.

[0058] More specifically, the heat pump 100 includes a first water supply pipe 110. One side of the first water supply pipe 110 is connected to the plate heat exchanger in the heat pump 100, and the other side is connected to the water inlet of the radiation terminal 200. The heat pump 100 further includes a first water return pipe 120. One side of the first water return pipe 120 is connected to the water outlet of the radiation terminal 200, and the other side is connected to the plate heat exchanger in the heat pump 100. The plate heat exchanger, the first water supply pipe 110, the first water return pipe 120, and the radiation terminal 200 form a closed loop to regulate the indoor temperature. The boiler 300 includes a second water supply pipe 310 and a second water return pipe 320. The second water supply pipe 310 and the second water return pipe 320 are both connected to the first water supply pipe 110, and the distance between the second water supply pipe 310 and the second water return pipe 320 on the first water supply pipe 110 is less than or equal to 5 times the diameter of the first water supply pipe 110. The distances of the second water supply pipe 310 and the second water return pipe 320 on the first water supply pipe 110 are relatively close. The purpose is to make the pressures of the water supply point (i.e., the connection point of the second water supply pipe 310 and the first water supply pipe 110) and the water return point (i.e., the connection point of the second water return pipe 320 and the first water supply pipe 110) of the boiler 300 basically the same, achieving hydraulic balance. Since the distances between the water supply pipe and the water return point of the boiler 300 are small, the resistance between these two points is almost the same and can be ignored. Therefore, the second water pump built in the boiler 300 only needs to overcome the resistance between the outlet of the second water pump in the boiler 300 and the first water supply pipe 110. With the resistance reduced, the power required by the second water pump becomes less, and at the same time, the heat loss of the second water pump in the second water supply pipe 310 also decreases.

[0059] A first water pump is provided in the heat pump 100, and a second water pump is provided in the boiler 300. The flow rate of the first water pump is greater than or equal to 3 times the flow rate of the second water pump. The large difference between the flow rates of the first water pump and the second water pump is to reduce the influence of the second water pump in the boiler 300 on the water flow rate in the first water supply pipe 110, allowing a part of the water in the first water supply pipe 110 to enter the boiler 300 for heating and a part to be mixed with the water heated by the boiler 300, so as to reduce the water temperature fluctuation and avoid too large water temperature fluctuation, which may affect the stability of the radiation terminal 200 behind the water supply pipeline.

[0060] In a specific embodiment, a check valve 330 is provided on the second water supply pipe 310. When the second water pump in the boiler 300 pauses working, it prevents the water in the first water supply pipe 110 from flowing back inside the boiler 300.

[0061] In a specific embodiment, the radiation air-conditioning device with energy complementary also includes a dual cold source integrated machine 400. The dual cold source integrated machine 400 includes a third water supply pipe and a third water return pipe. The third water supply pipe is connected to the first water supply pipe 110, and the third water return pipe is connected to the first water return pipe 120.

[0062] Specifically, the dual-cooling-source integrated unit 400 and the radiant terminal 200 are connected in parallel to the first water supply pipe 110 and the first water return pipe 120 of the heat pump 100. The water circuit of the dual-cooling-source integrated unit 400 is in a normally open state, and the water flow rate is 50% of the water flow rate in the first water supply pipe 110. The water circuit of the radiant terminal 200 is opened or closed according to the set temperature and the actual temperature of the room. In the fully open state, the water flow rate of the radiant terminal 200 is 50% of the water flow rate in the first water supply pipe 110. When the radiant terminal 200 is in the fully closed state, the water flow rate inside it is 50% of the water flow rate in the first water supply pipe 110.

[0063] In a specific embodiment, the radiant air-conditioning device further includes a heat pump 100 state detection device for detecting the actual working condition of the heat pump 100; a boiler 300 operation device for turning on or off the boiler 300 according to an input control signal; and a control device for sending a control signal to the boiler 300 operation device according to the control signal sent by the heat pump 100 state detection device to control the boiler 300 operation device.

[0064] Specifically, the state of the heat pump 100 refers to the frequency of the compressor of the heat pump 100 and the temperature of the outlet of the first water supply pipe 110 of the heat pump 100. The high or low compressor frequency represents the high or low heating and cooling rate of the heat pump 100, and the temperature of the outlet of the first water supply pipe 110 directly reflects the actual working temperature of the subsequent radiant terminal 200 and the dual-cooling-source integrated unit 400. After the heat pump 100 state detection device detects the actual working state of the heat pump 100, it sends an electrical signal to the control device. An electrical connection is formed between the heat pump 100 state detection device and the control device. After receiving the electrical signal, the control device judges the actual working state of the heat pump 100, and then sends a control signal to the boiler 300 operation device. An electrical connection is formed between the boiler 300 operation device and the control device. After receiving the control signal, the boiler 300 operation device starts to turn on or off the boiler 300.

[0065] More specifically, the heat pump 100 state detection device includes: a compressor frequency detection unit for detecting the frequency when the compressor is operating; a water temperature detection unit for the outlet water of the first water supply pipe 110 for detecting the water temperature in the first water supply pipe 110; wherein, the control device sends a control signal to the boiler 300 operation device according to the control signals sent by the compressor frequency detection unit and the water temperature detection unit for the outlet water of the first water supply pipe 110 to achieve the control of the boiler 300 operation device. That is, after the compressor frequency detection unit detects the operating frequency of the compressor, it sends an electrical signal to the control device, and after receiving the electrical signal, the control device knows the actual operating frequency of the compressor; the water temperature detection unit for the outlet water of the first water supply pipe 110 detects the actual temperature of the outlet of the first water supply pipe 110 and sends an electrical signal to the control device, and after receiving the electrical signal, the control device knows the actual temperature of the outlet of the first water supply pipe 110. Then, the control device makes a judgment based on the actual operating frequency of the compressor and the actual temperature of the outlet of the first water supply pipe 110, and then sends a control signal to the boiler 300 control device to achieve the control of starting and stopping the boiler 300.

[0066] More specifically, the boiler 300 operation device includes: an ignition device for achieving the connection of the ignition circuit of the boiler 300 device according to the received control signal; a smoke exhaust fan solenoid valve for achieving the opening or closing of the smoke exhaust fan of the boiler 300 device according to the received control signal; a second water pump motor electromagnetic device for achieving the opening or closing of the second water pump according to the received control signal; an oxygen pipeline solenoid valve for achieving the control of the opening and closing degree of the oxygen pipeline according to the received control signal; wherein, the control device sends control signals to the ignition device, the smoke exhaust fan solenoid valve, the second water pump motor electromagnetic device and the oxygen pipeline solenoid valve according to the control signal sent by the heat pump 100 state detection device.

[0067] Specifically, the ignition device achieves the connection of the ignition circuit of the boiler 300 device according to the electrical signal sent by the control device, and after the connection, the boiler 300 enters the operation preparation state; after the smoke exhaust fan solenoid valve receives the electrical signal sent by the control device, the smoke exhaust fan starts to operate, and the boiler 300 enters the operation preparation state; after the second water pump motor receives the start command, the electromagnetic device (such as the stator coil and the rotor) inside it will start to work. After the stator coil is energized, a magnetic field will be generated, and this magnetic field will interact with the conductors in the rotor, thereby generating a rotational torque to make the second water pump motor start to rotate. The oxygen pipeline solenoid valve achieves the opening and closing of the oxygen supply pipeline after receiving the control signal. When its opening angle increases, the operating power of the boiler 300 increases, and when its opening angle decreases, the operating power of the boiler 300 decreases. When the ignition device, the smoke exhaust fan solenoid valve, the second water pump motor electromagnetic device and the oxygen pipeline solenoid valve are all in the open state, the boiler 300 starts to operate.

[0068] In a specific embodiment, the control device includes a main controller and a boiler 300 controller, and the main controller is electrically connected to the boiler 300 controller to receive electrical signals from each other. The energy-complementary radiant air-conditioning device further includes: a refrigerant pressure sensor for detecting the pressure value of the refrigerant in the condenser; and the control device sends control signals to the ignition device, the smoke exhaust fan solenoid valve, the second water pump motor electromagnetic device, and the oxygen pipeline solenoid valve according to the control signals sent by the refrigerant pressure sensor.

[0069] Specifically, when the pressure value of the refrigerant in the condenser is lower than the set threshold, the control device sends an electrical signal to the boiler 300 operating device to turn on the boiler 300, thereby turning on the boiler 300. When the pressure value of the refrigerant in the condenser is greater than the set critical value, the main controller sends a control signal to the boiler 300 controller, and the boiler 300 controller sends a control signal to the boiler 300 operating device to turn on the boiler 300; when the pressure value of the refrigerant in the condenser is less than the set critical value, the main controller sends a control signal to the boiler 300 controller, and the boiler 300 controller sends a control signal to the boiler 300 operating device to turn off the boiler 300 after maintaining for t1 time.

[0070] A control method for an energy-complementary radiant air-conditioning device according to an embodiment of the present application includes:

[0071] S100. The control device detects the water temperature and the compressor frequency data in the first water supply pipe 110 according to the heat pump 100 state detection device. When the compressor frequency reaches the maximum frequency and maintains for t1 time, and the temperature T1 in the first water supply pipe 110 is less than T - 2 °C, a control signal to turn on the boiler 300 is sent to the boiler 300 operating device, where T is the temperature set by the user.

[0072] Specifically, in the heating mode, the control device monitors the temperature of the outlet of the first water supply pipe 110 in the heat pump 100 and the frequency of the compressor in real time. When the compressor frequency reaches the maximum and maintains for 5 minutes, and the temperature T1 in the first water supply pipe 110 is less than the user-set temperature minus 2 °C, it is determined that the heat pump 100 is difficult to meet the heating demand of the user at this time. Then the control device sends an electrical signal to the boiler 300 operating device, that is, sends an electrical signal to turn on the ignition device, the smoke exhaust fan solenoid valve, the second water pump motor electromagnetic device, and the oxygen pipeline solenoid valve. The ignition device, the smoke exhaust fan solenoid valve, the second water pump motor electromagnetic device, and the oxygen pipeline solenoid valve are all in the on state, and the boiler 300 starts to operate to supplement heat to the water in the first water supply pipe 110.

[0073] S200. The control device receives the refrigerant pressure value detected by the refrigerant pressure sensor in the condenser. When the refrigerant pressure value in the condenser is greater than the set critical value, the main controller sends a control signal to the boiler 300 controller, and the boiler 300 controller sends a control signal to the boiler 300 operating device to send a control signal to turn on the boiler 300; when the refrigerant pressure value in the condenser is less than the set critical value, the main controller sends a control signal to the boiler 300 controller, and the boiler 300 controller sends a control signal to turn off the boiler 300 to the boiler 300 operating device after maintaining for t1 time.

[0074] Specifically, in the heating mode, when the control device receives the defrost signal, that is, when the refrigerant pressure value in the condenser is greater than the set critical value, it indicates that the fin temperature of the condenser is too low and frosting occurs. When frosting occurs, the heat pump 100 needs to reverse the indoor temperature for defrosting, resulting in the heat pump 100 always having to allocate a part of its power for frequent defrosting, so that the water temperature in the outlet pipe of the heat pump 100 cannot reach the user-set temperature. At this time, the main controller of the control device sends a control signal to the boiler 300 controller, and the boiler 300 controller sends a control signal to turn on the boiler 300 to the boiler 300 operating device, that is, sends an on electrical signal to the ignition device, the smoke exhaust fan solenoid valve, the second water pump motor electromagnetic device, and the oxygen pipeline solenoid valve. The ignition device, the smoke exhaust fan solenoid valve, the second water pump motor electromagnetic device, and the oxygen pipeline solenoid valve are all in the on state, and the boiler 300 starts to operate to supplement heat to the water in the first water supply pipe 110.

[0075] When the control device receives the defrost end signal, that is, when the refrigerant pressure value in the condenser is less than the set critical value, in order to reduce the water temperature fluctuation in the first water supply pipe 110, the main controller sends a control signal to the boiler 300 controller, and the boiler 300 controller sends a control signal to turn off the boiler 300 to the boiler 300 operating device after maintaining for t1 time. The t1 time here is selected as 5 minutes.

[0076] When the boiler 300 is turned on, the control logic of its water temperature is as follows:

[0077] The energy-complementary radiant air-conditioning device further includes a second water supply pipe 310 outlet water temperature detection unit for detecting the water temperature in the second water supply pipe 310. The outlet water temperature of the second water supply pipe 310 of the boiler 300 is set to change dynamically, and logical judgment is made according to the difference between the set temperature of the heat pump 100 and the actual temperature of the heat pump 100 when the boiler 300 is turned on.

[0078] Specifically:

[0079] When T - T1 ≥ 10°C, the control device sends a control signal to the oxygen pipeline solenoid valve to adjust the opening angle of the oxygen pipeline solenoid valve so that the water temperature in the second water supply pipe 310 detected by the water temperature detection part of the second water supply pipe 310 is equal to the water temperature in the first water supply pipe 110;

[0080] When 10°C > T - T1 ≥ 5°C, the control device sends a control signal to the oxygen pipeline solenoid valve to adjust the opening angle of the oxygen pipeline solenoid valve so that the water temperature in the second water supply pipe 310 detected by the water temperature detection part of the second water supply pipe 310 is equal to the water temperature in the first water supply pipe 110 minus 2°C;

[0081] When T - T1 < 5°C, the control device sends a control signal to the oxygen pipeline solenoid valve to adjust the opening angle of the oxygen pipeline solenoid valve so that the water temperature in the second water supply pipe 310 detected by the water temperature detection part of the second water supply pipe 310 is equal to the water temperature in the first water supply pipe 110 minus 4°C.

[0082] Wherein, T is the temperature set by the user, and T1 is the actual temperature at the water outlet of the first water supply pipe 110 in the heat pump 100.

[0083] The control method further includes:

[0084] When T1 is more than 4°C higher than the temperature set by the user and the boiler 300 has been continuously running for more than 5 minutes, the control device sends a control signal to the boiler 300 operating device to shut down the boiler 300.

[0085] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the embodiments of the present disclosure that have similar functions.

Claims

1. A radiation air conditioning device with complementary energy sources, characterized in that: It includes a heat pump, a radiation terminal and a boiler, wherein the heat pump includes a first water supply pipe and a first water return pipe, the heat pump is connected to the water inlet of the radiation terminal through the first water supply pipe, and the heat pump is connected to the water outlet of the radiation terminal through the first water return pipe; The boiler comprises a second water supply pipe and a second water return pipe, the boiler is connected to the first water supply pipe through the second water supply pipe, and the boiler is connected to the first water supply pipe through the second water return pipe; Wherein, the distance between the second water supply pipe and the second water return pipe in the first water supply pipe is less than or equal to 5 times the diameter of the first water supply pipe.

2. The energy-complementary radiation air conditioning device according to claim 1, characterized in that: The heat pump is provided with a first water pump, the boiler is provided with a second water pump, and the flow rate of the first water pump is greater than or equal to 3 times the flow rate of the second water pump.

3. The energy-complementary radiation air conditioning device according to claim 2, characterized in that: The second water supply pipe is provided with a one-way valve.

4. The energy-complementary radiation air conditioning device according to claim 3, characterized in that: It also includes a dual-cold source integrated machine, which includes a third water supply pipe and a third water return pipe. The third water supply pipe is connected to the first water supply pipe, and the third water return pipe is connected to the first water return pipe.

5. The energy-complementary radiation air conditioning device according to any one of claims 1 to 4, characterized in that: Also includes: A heat pump status detection device, used to detect the actual working condition of the heat pump; A boiler operation device, used to turn the boiler on or off according to an input control signal; A control device is used to send a control signal to the boiler operation device according to the control signal sent by the heat pump state detection device to control the boiler operation device.

6. The energy-complementary radiation air conditioning device according to claim 5, characterized in that: The heat pump state detection device comprises: The compressor frequency detection unit is used to detect the frequency of the compressor when it is working; A first water supply pipe outlet water temperature detection unit, used to detect the water temperature in the first water supply pipe; Wherein, the control device sends a control signal to the boiler operating device according to the control signals sent by the compressor frequency detection unit and the first water supply pipe outlet water temperature detection unit to realize control of the boiler operating device.

7. The energy-complementary radiation air conditioning device according to claim 5, characterized in that: The boiler operating device comprises: An ignition device, used to connect an ignition circuit of the boiler device according to a received control signal; The exhaust fan solenoid valve is used to open or close the exhaust fan of the boiler device according to the received control signal; A second water pump motor electromagnetic device, used to turn on or off the second water pump according to the received control signal; The oxygen pipeline solenoid valve is used to control the opening and closing degree of the oxygen pipeline according to the received control signal; Wherein, the control device sends a control signal to the ignition device, the smoke exhaust fan solenoid valve, the second water pump motor solenoid device and the oxygen pipeline solenoid valve according to the control signal sent by the heat pump state detection device.

8. The energy-complementary radiation air conditioning device according to claim 7, characterized in that: The control device comprises a main controller and a boiler controller, wherein the main controller is electrically connected to the boiler controller to receive electrical signals from each other.

9. The energy-complementary radiation air conditioning device according to claim 8, characterized in that: The energy-complementary radiation air conditioning device also includes: Refrigerant pressure sensor, used to detect the pressure value of the refrigerant in the condenser; The control device sends a control signal to the ignition device, the smoke exhaust fan solenoid valve, the second water pump motor solenoid device and the oxygen pipeline solenoid valve according to the control signal sent by the refrigerant pressure sensor.

10. A control method for an energy-complementary radiation air-conditioning device, the energy-complementary radiation air-conditioning device comprising the energy-complementary radiation air-conditioning device according to any one of claims 1 to 9, the control method comprising: The control device detects the water temperature and compressor frequency data in the first water supply pipe according to the heat pump state detection device. When the compressor frequency is opened to the maximum frequency and maintained for t1 time, when the temperature T1 in the first water supply pipe is less than T-2°C, where T is the temperature set by the user, a control signal to start the boiler is sent to the boiler operation device.

11. The control method of the energy-complementary radiation air conditioning device according to claim 10, characterized in that: The control method further comprises: The main controller receives the refrigerant pressure value detected by the refrigerant pressure sensor in the condenser. When the refrigerant pressure value in the condenser is greater than the set critical value, the main controller sends a control signal to the boiler controller, and the boiler controller sends a control signal to the boiler operation device to start the boiler; When the refrigerant pressure value in the condenser is less than the set critical value, the main controller sends a control signal to the boiler controller, and the boiler controller maintains t1 time and then sends a control signal to the boiler operating device to shut down the boiler.

12. The control method of the energy-complementary radiation air conditioning device according to claim 10, characterized in that: The energy-complementary radiation air conditioning device further includes a second water supply pipe outlet water temperature detection unit for detecting the water temperature in the second water supply pipe; The control method further comprises: When T-T1≥10°C, the control device sends a control signal to the oxygen pipeline solenoid valve to adjust the opening angle of the oxygen pipeline solenoid valve so that the water temperature in the second water supply pipeline detected by the second water supply pipeline outlet water temperature detection unit is equal to the water temperature in the first water supply pipeline; When 10°C>T-T1≥5°C, the control device sends a control signal to the oxygen pipeline solenoid valve to adjust the opening angle of the oxygen pipeline solenoid valve so that the water temperature in the second water supply pipeline detected by the second water supply pipeline outlet water temperature detection unit is equal to the water temperature in the first water supply pipeline minus 2°C; When T-T1<5℃, the control device sends a control signal to the oxygen pipeline solenoid valve to adjust the opening angle of the oxygen pipeline solenoid valve so that the water temperature in the second water supply pipeline detected by the second water supply pipeline outlet water temperature detection unit is equal to the water temperature in the first water supply pipeline minus 4℃.

13. The control method of the energy-complementary radiation air conditioning device according to claim 12, characterized in that: The control method further comprises: When T1 is higher than the temperature set by the user by more than 4°C and the boiler has been running continuously for more than 5 minutes, the control device sends a control signal to the boiler operating device to shut down the boiler.

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