Control methods for wall-hung boilers and integrated heat pump units

Abstract

This application relates to a control method for a wall-hung boiler-heat pump integrated unit and the wall-hung boiler-heat pump integrated unit itself. The method includes: acquiring the return water temperature, outlet water temperature, current power of the wall-hung boiler, and inlet air temperature of the heat pump while the wall-hung boiler and heat pump are operating; stopping the heat pump if the inlet air temperature is not within a preset temperature range; and maintaining heat pump operation if the inlet air temperature is within the preset temperature range, and the return water temperature is greater than a preset return water temperature, and the outlet water temperature is less than a first preset outlet water temperature, and the current power of the wall-hung boiler reaches its maximum power. This application can reduce the power consumption of the wall-hung boiler-heat pump integrated unit and ensure the stability of its heating supply.

Description

Technical Field

[0001] This application relates to the field of heating technology, and in particular to a control method for a wall-hung boiler heat pump integrated unit and a wall-hung boiler heat pump integrated unit. Background Technology

[0002] With the development of heating technology, integrated systems combining wall-mounted boilers and heat pumps have emerged. Heat pumps are generally air-source heat pumps, employing the reverse Carnot cycle to absorb a large amount of low-temperature heat energy from the air with minimal electrical energy. This heat energy is then compressed into high-temperature heat energy by a compressor for heating, resulting in low power consumption. In these integrated systems, the heat pump is activated first during heating, and the boiler is only activated as an auxiliary heating source when the heat pump cannot meet the heating demand. However, because the heat pump's power consumption varies under different operating conditions, forcing the heat pump to operate without considering these conditions can lead to higher energy consumption in certain situations, resulting in higher power consumption for the integrated system. Summary of the Invention

[0003] Therefore, it is necessary to provide a control method and a wall-hung boiler heat pump integrated unit that can reduce power consumption to address the above-mentioned technical problems.

[0004] In a first aspect, this application proposes a control method for a wall-hung boiler-heat pump integrated unit, applied to such a unit. The wall-hung boiler-heat pump integrated unit includes a wall-hung boiler and a heat pump, wherein the heat pump exchanges heat with the wall-hung boiler through a heat exchanger. The method includes:

[0005] When the wall-hung boiler and the heat pump are operating, the return water temperature, the outlet water temperature, the current power of the wall-hung boiler, and the intake air temperature of the heat pump are acquired. If the intake air temperature is not within a preset temperature range, the heat pump operation is stopped. If the intake air temperature is within the preset temperature range, and the return water temperature is greater than a preset return water temperature, and the outlet water temperature is less than a first preset outlet water temperature, and the current power of the wall-hung boiler reaches its maximum power, the heat pump operation is maintained.

[0006] In one embodiment, the step of stopping the heat pump operation when the return water temperature is greater than the preset return water temperature further includes: if the outlet water temperature is greater than or equal to the first preset outlet water temperature, or if the current power of the wall-hung boiler is less than the maximum power of the wall-hung boiler.

[0007] In one embodiment, after stopping the heat pump, the method further includes: if the outlet water temperature is lower than a first preset outlet water temperature and the current power of the wall-hung boiler is lower than the maximum power of the wall-hung boiler, then increasing the power of the wall-hung boiler; if the outlet water temperature is greater than or equal to the first preset outlet water temperature, then stopping the operation of the wall-hung boiler.

[0008] In one embodiment, if the intake air temperature is within a preset temperature range, and the return water temperature is less than or equal to a preset return water temperature, and if the outlet water temperature is greater than a second preset outlet water temperature, and the current power of the wall-hung boiler reaches the minimum power of the wall-hung boiler, then the operation of the wall-hung boiler is stopped.

[0009] In one embodiment, the step of maintaining the operation of the wall-hung boiler when the return water temperature is less than or equal to a preset return water temperature further includes: if the outlet water temperature is less than or equal to a second preset outlet water temperature, or if the current power of the wall-hung boiler is greater than the minimum power of the wall-hung boiler.

[0010] In one embodiment, the step of stopping the operation of the wall-hung boiler if the outlet water temperature is greater than the second preset outlet water temperature and the current power of the wall-hung boiler reaches the minimum power of the wall-hung boiler further includes: starting the operation of the wall-hung boiler if the outlet water temperature is less than the second preset outlet water temperature.

[0011] In one embodiment, the step of stopping the operation of the wall-hung boiler if the outlet water temperature is greater than the second preset outlet water temperature and the current power of the wall-hung boiler reaches the minimum power of the wall-hung boiler further includes: if the outlet water temperature is greater than or equal to the second preset outlet water temperature, then the wall-hung boiler is kept stopped.

[0012] In one embodiment, the outlet water temperature includes: heating outlet water temperature and / or bathroom outlet water temperature; the first preset outlet water temperature includes: a first preset heating outlet water temperature and / or a first preset bathroom outlet water temperature; the return water temperature includes: heating return water temperature and / or bathroom return water temperature; the preset return water temperature includes: a preset heating return water temperature and / or a preset bathroom return water temperature; the heating outlet water temperature is associated with the preset heating outlet water temperature, the heating return water temperature, and the preset heating return water temperature; the bathroom outlet water temperature is associated with the preset bathroom outlet water temperature, the bathroom return water temperature, and the preset bathroom return water temperature.

[0013] Secondly, this application proposes a wall-hung boiler-heat pump integrated unit, comprising: a wall-hung boiler, the wall-hung boiler including a heating outlet pipe and a heating return pipe; a heat pump, the heat pump including a circulation pipeline and an inlet air temperature sensor, the inlet air temperature sensor being used to detect the inlet air temperature of the heat pump; a heat exchanger, the heat exchanger being connected to the heating return pipe and the circulation pipeline respectively; and a controller, the controller being connected to the wall-hung boiler and the heat pump respectively, the controller being used to execute the wall-hung boiler-heat pump integrated unit control method described in the first aspect embodiment.

[0014] In one embodiment, a first temperature sensor is installed on the heating outlet pipe, and a second temperature sensor is installed on the heating return pipe. Both the first and second temperature sensors are electrically connected to the controller.

[0015] The aforementioned control method and integrated wall-hung boiler-heat pump unit, when both the boiler and heat pump are running, acquire the heat pump's intake air temperature. If the intake air temperature is outside the preset range, it indicates that the heat pump requires higher power consumption to provide heat at that temperature. Therefore, stopping the heat pump and using only the boiler for heating reduces the unit's overall power consumption. Simultaneously, when the intake air temperature is within the preset range, the system comprehensively assesses the return water temperature, outlet water temperature, and the boiler's current power to determine whether to maintain heat pump operation, ensuring the stability of the integrated boiler-heat pump unit's heating supply. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a flowchart of a control method for a wall-mounted boiler-heat pump integrated unit in one embodiment;

[0018] Figure 2 This is a flowchart illustrating the process where the return water temperature exceeds a preset return water temperature in one embodiment.

[0019] Figure 3 This is a flowchart of what happens after the heat pump stops operating in one embodiment;

[0020] Figure 4 This is a flowchart illustrating the process where the return water temperature is less than or equal to a preset return water temperature in one embodiment.

[0021] Figure 5 This is a flowchart of another embodiment where the return water temperature is less than or equal to the preset return water temperature;

[0022] Figure 6 This is a flowchart illustrating the process after the wall-hung boiler is stopped in one embodiment.

[0023] Figure 7 This is a flowchart illustrating the process after the wall-hung boiler is stopped in another embodiment;

[0024] Figure 8 A flowchart of a control method for a wall-mounted boiler-heat pump integrated unit in another embodiment;

[0025] Figure 9 This is a schematic diagram of the structure of a wall-mounted boiler-heat pump integrated unit in one embodiment.

[0026] Explanation of reference numerals in the attached figures:

[0027] Wall-mounted boiler 200, heat pump 300, heat exchanger 400, controller 500, expansion tank 600, heating outlet pipe 201, heating return pipe 202, main heat exchanger 203, circulating water pump 204, burner 205, first temperature sensor 206, second temperature sensor 207, three-way valve 208, bypass pipe 209, bathroom piping 210, bathroom heat exchanger 211, bathroom outlet water temperature sensor 212, water flow sensor 213, water supply valve 214, circulating piping 301, air inlet temperature sensor 302, evaporator 303, compressor 304, fan 305. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0030] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.

[0031] Spatial relation terms such as “below,” “under,” “below,” “below,” “above,” “above,” etc., are used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, an element or feature described as “below,” “below,” or “below” will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0032] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if there is transmission of electrical signals or data between the connected objects.

[0033] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0034] As described in the background section, existing wall-hung boiler-heat pump integrated units suffer from high power consumption under certain operating conditions. Research has revealed that this problem arises because the heat pump requires more electrical energy to control the compressor for refrigerant compression at excessively high or low intake air temperatures, while the boiler's operation is unaffected by ambient temperature. Based on these reasons, this application provides a control method for a wall-hung boiler-heat pump integrated unit that can stop the heat pump from operating when power consumption is high, thereby reducing the overall power consumption of the wall-hung boiler-heat pump integrated unit.

[0035] The control method for the wall-hung boiler-heat pump integrated unit of this application embodiment can be applied to the wall-hung boiler-heat pump integrated unit. The wall-hung boiler-heat pump integrated unit includes: a wall-hung boiler and a heat pump. The heat pump exchanges heat with the wall-hung boiler through a heat exchanger, thereby heating the water flow in the wall-hung boiler to achieve the effect of heat pump heating.

[0036] In one embodiment, such as Figure 1 As shown, a control method for a wall-hung boiler-heat pump integrated unit is provided, including:

[0037] Step S110: With the wall-hung boiler and heat pump running, obtain the return water temperature, the outlet water temperature, the current power of the wall-hung boiler, and the intake air temperature of the heat pump.

[0038] Specifically, the wall-hung boiler in this embodiment can have bathroom and / or heating functions. When the integrated wall-hung boiler and heat pump unit receives a heating demand, both the boiler and the heat pump will start running. When the boiler and heat pump first start, the integrated boiler and heat pump unit will respectively acquire the return water temperature, outlet water temperature, the current power of the boiler, and the air intake temperature of the heat pump. The return water temperature is the temperature of the water flowing from the external pipeline to the integrated boiler and heat pump unit that needs to be heated; the outlet water temperature is the temperature of the heated water supplied by the integrated boiler and heat pump unit to the external pipeline; the current power of the boiler is the combustion power of the boiler's burner; and the air intake temperature is the temperature of the air flowing into the heat pump, obtained from a temperature sensor installed in the heat pump.

[0039] In step S120, if the intake air temperature is not within the preset temperature range, the heat pump operation is stopped.

[0040] Specifically, the intake air temperature of a heat pump has a significant impact on its operating power. If the intake air temperature is determined to be outside the preset temperature range, it indicates that the heat pump consumes more power and has lower heating efficiency at that temperature. Therefore, the heat pump should be stopped, and only the wall-mounted boiler should be used for heating, thereby reducing the total power consumption during heating. The preset temperature range is a pre-set temperature interval suitable for the heat pump to operate within, where the heat pump consumes less power and has higher heating efficiency. In one embodiment, the preset temperature range is 7 degrees Celsius to 43 degrees Celsius.

[0041] It is understandable that when the wall-mounted boiler and heat pump are already operating simultaneously for heating, the heat pump's intake air temperature can be acquired in real time. If the intake air temperature is not within the preset temperature range, the heat pump will stop operating, and heating will be provided solely by the wall-mounted boiler. If the intake air temperature is subsequently detected to be within the preset temperature range, the heat pump can be restarted. In some other embodiments, due to the long cycle of ambient temperature changes, the heat pump's intake air temperature can be acquired once a day to determine whether it is necessary to stop the heat pump.

[0042] Step S130: If the intake air temperature is within the preset temperature range and the return water temperature is greater than the preset return water temperature.

[0043] Specifically, since the power consumption of a heat pump is not only related to the heat pump's intake air temperature, if it is determined that the heat pump's intake air temperature is within the preset temperature range, it is also necessary to make further judgments based on the obtained return water temperature. If the return water temperature is too high, it will also increase the heat pump's power consumption. At this time, it is necessary to make a comprehensive judgment on whether to stop the heat pump from running.

[0044] In step S140, if the outlet water temperature is lower than the first preset outlet water temperature and the current power of the wall-hung boiler reaches the maximum power of the wall-hung boiler, then the heat pump operation is maintained.

[0045] Specifically, if the return water temperature is higher than the preset return water temperature, a comprehensive judgment is made based on the obtained outlet water temperature and the current power of the wall-hung boiler. If the outlet water temperature is lower than the first preset outlet water temperature and the wall-hung boiler is running at maximum power, it means that even when the wall-hung boiler is running at full power, it cannot meet the set preset outlet water temperature requirement. In this case, the heat pump needs to continue to run to provide auxiliary heating.

[0046] In one embodiment, such as Figure 2 As shown, in step S130, if the return water temperature is greater than the preset return water temperature, the following step is also included: step S150, if the outlet water temperature is greater than or equal to the first preset outlet water temperature, or if the current power of the wall-hung boiler is less than the maximum power of the wall-hung boiler, then the heat pump operation is stopped.

[0047] Specifically, if the return water temperature is higher than the preset return water temperature, and the outlet water temperature is greater than or equal to the first preset outlet water temperature, it means that the boiler and heat pump can meet the set preset outlet water temperature requirement when running simultaneously. However, because the return water temperature is higher than the preset return water temperature, the heat pump consumes more power, so it stops operating. If the return water temperature is higher than the preset return water temperature, and the boiler's current power is less than its maximum power, it means the boiler can adjust the outlet water temperature by adjusting its current power. Again, because the return water temperature is higher than the preset return water temperature, the heat pump consumes more power, so it stops operating.

[0048] In one embodiment, such as Figure 3 As shown, in step S150, after stopping the heat pump, the following steps are also included:

[0049] In step S160, if the outlet water temperature is lower than the first preset outlet water temperature and the current power of the wall-hung boiler is lower than the maximum power of the wall-hung boiler, then increase the power of the wall-hung boiler.

[0050] Specifically, if the obtained outlet water temperature is lower than the first preset outlet water temperature when the heat pump is stopped, and the current power of the wall-hung boiler is lower than the maximum power of the wall-hung boiler, it means that the outlet water temperature cannot meet the set preset outlet water temperature under the current power of the wall-hung boiler. In this case, the power of the wall-hung boiler is increased to increase the outlet water temperature.

[0051] In step S170, if the outlet water temperature is greater than or equal to the first preset outlet water temperature, the wall-hung boiler will stop operating.

[0052] Specifically, when the heat pump stops operating, the wall-hung boiler will adjust the outlet water temperature by adjusting the current power to meet the first preset outlet water temperature requirement. If the obtained outlet water temperature is greater than or equal to the first preset outlet water temperature, it means that the outlet water temperature is still too high even when the current power of the wall-hung boiler has reached the minimum power of the wall-hung boiler. At this time, the wall-hung boiler stops operating.

[0053] In one embodiment, such as Figure 4 As shown, the control method for wall-mounted boiler-heat pump integrated units also includes:

[0054] Step S210: If the intake air temperature is within the preset temperature range and the return water temperature is less than or equal to the preset return water temperature.

[0055] Specifically, if the intake air temperature is within the preset temperature range and the return water temperature is less than or equal to the preset return water temperature, it means that the heat pump can operate at the optimal power consumption. At this time, the heat pump is kept running, and the operating status of the wall-hung boiler is controlled according to the outlet water temperature and the current power of the wall-hung boiler.

[0056] Step S220: If the outlet water temperature is greater than the second preset outlet water temperature, and the current power of the wall-hung boiler reaches the minimum power of the wall-hung boiler, then stop the operation of the wall-hung boiler.

[0057] Specifically, if the outlet water temperature is determined to be higher than the second preset outlet water temperature, and the current power of the wall-hung boiler has reached its minimum power, it means that even after adjusting the current power of the wall-hung boiler to the minimum power, the outlet water temperature is still high. Since the heat pump is operating at its optimal power consumption at this time, the wall-hung boiler is stopped, and heating is carried out solely by the heat pump. It is understood that the second preset outlet water temperature can be the same as or different from the first preset outlet water temperature.

[0058] In one embodiment, such as Figure 5 As shown, in step S210, if the return water temperature is less than or equal to the preset return water temperature, the following further step is included:

[0059] Step S230: If the outlet water temperature is less than or equal to the second preset outlet water temperature, or the current power of the wall-hung boiler is greater than the minimum power of the wall-hung boiler, then the wall-hung boiler will continue to operate.

[0060] Specifically, when the return water temperature is less than or equal to the preset return water temperature, the heat pump operates at its optimal power consumption. If the outlet water temperature is less than or equal to the second preset outlet water temperature, it indicates that the outlet water temperature does not meet the preset outlet water temperature requirement. Therefore, the boiler continues to operate, and heating is performed simultaneously by the boiler and the heat pump. When the return water temperature is less than or equal to the preset return water temperature, the heat pump operates at its optimal power consumption. If the current power of the boiler is greater than its minimum power, it means that the outlet water temperature can be adjusted by adjusting the current power of the boiler. Therefore, the boiler also continues to operate.

[0061] In one embodiment, such as Figure 6 As shown, in step S220, after the step of stopping the operation of the wall-hung boiler if the outlet water temperature is greater than the second preset outlet water temperature and the current power of the wall-hung boiler reaches the minimum power of the wall-hung boiler, the following steps are also included:

[0062] Step S240: If the outlet water temperature is lower than the second preset outlet water temperature, the wall-hung boiler will be started.

[0063] Specifically, the outlet water temperature is monitored in real time even after the wall-hung boiler stops operating. If the outlet water temperature is detected to be lower than the second preset outlet water temperature, it indicates that heat pump heating alone cannot meet the required outlet water temperature. In this case, the wall-hung boiler needs to be started. It is understandable that after the wall-hung boiler starts operating, it can start from its minimum power and adjust the power to meet the set requirements of various temperature parameters.

[0064] In one embodiment, such as Figure 7 As shown, in step S220, after the step of stopping the operation of the wall-hung boiler if the outlet water temperature is greater than the second preset outlet water temperature and the current power of the wall-hung boiler reaches the minimum power of the wall-hung boiler, the following steps are also included:

[0065] In step S250, if the outlet water temperature is greater than or equal to the second preset outlet water temperature, the wall-hung boiler will remain shut down.

[0066] Specifically, the outlet water temperature is monitored in real time after the wall-hung boiler stops running. If the outlet water temperature is detected to be greater than or equal to the second preset outlet water temperature, it indicates that the heat pump heating alone can meet the demand for outlet water temperature. At this time, the wall-hung boiler is kept off.

[0067] In one embodiment, the outlet water temperature includes: heating outlet water temperature and / or bathroom outlet water temperature; the preset outlet water temperature includes: a first preset outlet water temperature including: a first preset heating outlet water temperature and / or a first preset bathroom outlet water temperature; the return water temperature includes: heating return water temperature and / or bathroom return water temperature; the preset return water temperature includes: a preset heating return water temperature and / or a preset bathroom return water temperature; the heating outlet water temperature is associated with the preset heating outlet water temperature, the heating return water temperature, and the preset heating return water temperature; the bathroom outlet water temperature is associated with the preset bathroom outlet water temperature, the bathroom return water temperature, and the preset bathroom return water temperature.

[0068] Specifically, in some embodiments, when the integrated wall-hung boiler and heat pump unit is only operating the bathroom function, the obtained outlet water temperature is the bathroom outlet water temperature, and the obtained return water temperature is the bathroom return water temperature. If the inlet air temperature is within the preset temperature range, and the bathroom return water temperature is greater than the preset bathroom return water temperature, and if the bathroom outlet water temperature is less than the first preset bathroom outlet water temperature, and the current power of the wall-hung boiler reaches its maximum power, then the heat pump operation is maintained for auxiliary heating. When the integrated wall-hung boiler and heat pump unit is only operating the heating function, the obtained outlet water temperature is the heating outlet water temperature. If the inlet air temperature is within the preset temperature range, and the heating return water temperature is greater than the preset heating return water temperature, and if the heating outlet water temperature is less than the first preset heating outlet water temperature, and the current power of the wall-hung boiler reaches its maximum power, then the heat pump operation is maintained for auxiliary heating. Similarly, when the integrated wall-hung boiler and heat pump unit is operating both the bathroom and heating functions simultaneously, subsequent steps are executed only if both preset values ​​are met. It is understandable that, when a second preset water outlet temperature is set, the second preset water outlet temperature also includes: the second preset heating water outlet temperature and / or the second preset bathroom water outlet temperature.

[0069] The following describes in detail the control method of the wall-mounted boiler-heat pump integrated unit of this application with a specific embodiment, such as Figure 8 As shown, when the wall-hung boiler and heat pump integrated unit starts up, the boiler and heat pump operate. At this time, the return water temperature, outlet water temperature, current boiler power, and heat pump intake temperature are acquired. If the intake temperature is greater than 7℃ and less than 43℃, the return water temperature is acquired; if the intake temperature is less than or equal to 7℃ or greater than or equal to 43℃, the heat pump stops operating. When the detected return water temperature is greater than the preset return water temperature, the outlet water temperature (heating outlet water temperature and / or bathroom outlet water temperature) and the current boiler power are acquired. When the detected outlet water temperature is less than the first preset outlet water temperature and the boiler is operating at maximum power, the heat pump continues to operate; otherwise, the heat pump stops. Operation; after the heat pump stops running, if the detected outlet water temperature is lower than the first preset outlet water temperature and the wall-hung boiler is not running at maximum power, the power of the wall-hung boiler is increased; otherwise, the wall-hung boiler stops running; when the detected return water temperature is less than or equal to the preset return water temperature, the outlet water temperature (heating outlet water temperature and / or bathroom outlet water temperature) and the current power of the wall-hung boiler are obtained; when the outlet water temperature is greater than the second preset outlet water temperature and the wall-hung boiler is running at minimum power, the wall-hung boiler stops running; otherwise, the wall-hung boiler and heat pump continue to run; after the wall-hung boiler stops running, if the outlet water temperature is lower than the second preset outlet water temperature, the wall-hung boiler is restarted; otherwise, the wall-hung boiler remains stopped.

[0070] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0071] Based on the same inventive concept, this application also provides a wall-hung boiler heat pump integrated unit for implementing the aforementioned control method. The solution provided by this device is similar to the implementation described in the above method; therefore, the specific limitations of one or more wall-hung boiler heat pump integrated unit embodiments provided below can be found in the above-described limitations of the wall-hung boiler heat pump integrated unit control method, and will not be repeated here.

[0072] In one embodiment, such as Figure 9 As shown, this application also proposes a wall-hung boiler-heat pump integrated unit, including: a wall-hung boiler 200, a heat pump 300, a heat exchanger 400, and a controller 500. The wall-hung boiler 200 includes a heating outlet pipe 201 and a heating return pipe 202; the heat pump 300 includes a circulation pipe 301 and an inlet air temperature sensor 302, which is used to detect the inlet air temperature of the heat pump 300; the heat exchanger 400 is connected to the heating return pipe 202 and the circulation pipe 301 respectively; the controller 500 is connected to the wall-hung boiler 200 and the heat pump 300 respectively, and the controller 500 is used to execute the wall-hung boiler-heat pump integrated unit control method in the above embodiment.

[0073] Specifically, the heating outlet pipe 201 of the wall-hung boiler 200 is connected to the outlet of the main heat exchanger 203, and the inlet of the main heat exchanger 203 is connected to the heating return pipe 202. The heating outlet pipe 201 and the heating return pipe 202 are connected to the indoor heating pipes. The circulating water pump 204 in the wall-hung boiler 200 is used to drive the water flow. During heating, the circulating water pump 204 drives the water flow in the heating return pipe 202 and the heating outlet pipe 201 to circulate. The water flow is heated by the burner 205 through the main heat exchanger 203, thereby completing the heating of the indoor space. The heat pump 300 is used to heat the working fluid in the circulating pipe 301, and the inlet air temperature sensor 302 in the heat pump 300 is used to detect the inlet air temperature of the heat pump 300. The heat exchanger 400 is connected to the heating return water pipe 202 and the circulation pipe 301 respectively, and is used to heat the water flow in the heating return water pipe 202. Since the water temperature in the heating return water pipe 202 is relatively low, this arrangement can improve the heat exchange efficiency of the heat exchanger 400. It is understood that in some other embodiments, the heat exchanger 400 may also be connected to the heating outlet water pipe 201 and the circulation pipe 301 respectively. The controller 500 is connected to the sensing and control components in the wall-hung boiler 200 and the heat pump 300 respectively, and is used to execute the wall-hung boiler heat pump integrated control method in the above embodiments.

[0074] When the integrated wall-mounted boiler and heat pump unit starts its heating function and both the wall-mounted boiler 200 and the heat pump 300 are working, the water in the indoor heating pipes flows in from the return port of the heating return pipe 202. After being pressurized by the circulating water pump 204, it flows into the heat exchanger 400. The heat exchanger 400 transfers the heat of the working fluid in the circulating pipe 301 of the heat pump 300 to the water in the heating return pipe 202. After being heated once, the water flows into the main heat exchanger 203 and is heated a second time by the burner 205. Finally, it flows out from the outlet of the heating outlet pipe 201.

[0075] In one embodiment, a first temperature sensor 206 is provided on the heating outlet pipe 201 to detect the outlet water temperature, and a second temperature sensor 207 is provided on the heating return pipe 202 to detect the return water temperature. Both the first temperature sensor 206 and the second temperature sensor 207 are electrically connected to the controller 500 to send the detected outlet water temperature and return water temperature to the controller 500, respectively.

[0076] In one embodiment, the heat pump 300 further includes an evaporator 303, a compressor 304, and a fan 305, wherein the evaporator 303, the compressor 304, and the heat exchanger 400 are connected in sequence, and the intake air temperature sensor 302 is used to detect the intake air temperature of the air supplied by the fan 305 to the evaporator 303.

[0077] Specifically, when the heat pump 300 starts, the fan 305 blows air into the evaporator 303. The evaporator 303 absorbs heat from the air to evaporate the heat transfer medium. After the working medium vapor is compressed by the compressor 304, its pressure and temperature rise. The high-temperature vapor releases heat through the heat exchanger 400 and re-enters the evaporator 303, thus completing the effect of transferring heat to the heating water.

[0078] In one embodiment, the wall-hung boiler 200 further includes: a three-way valve 208, a bypass pipe 209, a bathroom pipe 210, and a bathroom heat exchanger 211. The three-way valve 208 is installed on the heating outlet pipe 201, and the three-way valve 208 is connected to the heating return pipe 202 through the bypass pipe 209. The bathroom heat exchanger 211 is connected to the bypass pipe 209 and the bathroom pipe 210 respectively.

[0079] Specifically, the wall-mounted boiler 200 in this embodiment also has a bathroom function. When the bathroom function is activated, the three-way valve 208 directs hot water from the heating outlet pipe 201 into the bypass pipe 209. The hot water in the bypass pipe 209 exchanges heat with the cold water in the bathroom pipe 210 through the bathroom heat exchanger 211, thereby heating the water flow in the bathroom pipe 210 to complete the bathroom function. A bathroom outlet water temperature sensor 212 is installed at the outlet of the bathroom pipe 210, and a water flow sensor 213 is installed at the inlet of the bathroom pipe 210.

[0080] In one embodiment, the wall-mounted boiler-heat pump integrated unit further includes an expansion tank 600, which is connected to the heating return water pipe 202. Specifically, by setting up the expansion tank 600, the expansion tank can accommodate the expansion of water in the heating system, and can also play a role in pressure stabilization and water replenishment.

[0081] In one embodiment, the wall-hung boiler 200 further includes a water supply valve 214, which is connected to the bathroom pipe 210 and the heating return pipe 202 respectively. When the water supply valve 214 is opened, it can replenish water to the heating pipe.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A control method for a wall-mounted boiler-heat pump integrated unit, characterized in that, An application is made to a wall-hung boiler-heat pump integrated unit, the wall-hung boiler-heat pump integrated unit comprising: a wall-hung boiler and a heat pump, wherein the heat pump exchanges heat with the wall-hung boiler through a heat exchanger, the method comprising: When the wall-hung boiler and the heat pump are running, the return water temperature, the outlet water temperature, the current power of the wall-hung boiler, and the intake air temperature of the heat pump are obtained. If the intake air temperature is not within the preset temperature range, the heat pump operation will be stopped. If the intake air temperature is within the preset temperature range, and the return water temperature is greater than the preset return water temperature, and if the outlet water temperature is less than the first preset outlet water temperature, and the current power of the wall-hung boiler reaches the maximum power of the wall-hung boiler, then the heat pump will continue to operate.

2. The method according to claim 1, characterized in that, The condition where the return water temperature is greater than the preset return water temperature also includes: If the outlet water temperature is greater than or equal to the first preset outlet water temperature, or if the current power of the wall-hung boiler is less than the maximum power of the wall-hung boiler, then the heat pump operation will be stopped.

3. The method according to claim 2, characterized in that, The process of stopping the heat pump also includes: If the outlet water temperature is lower than the first preset outlet water temperature, and the current power of the wall-hung boiler is lower than the maximum power of the wall-hung boiler, then the power of the wall-hung boiler is increased. If the outlet water temperature is greater than or equal to the first preset outlet water temperature, the wall-hung boiler will stop operating.

4. The method according to claim 1, characterized in that, The method further includes: If the intake air temperature is within the preset temperature range, and the return water temperature is less than or equal to the preset return water temperature, and if the outlet water temperature is greater than the second preset outlet water temperature, and the current power of the wall-hung boiler reaches the minimum power of the wall-hung boiler, then the operation of the wall-hung boiler shall be stopped.

5. The method according to claim 4, characterized in that, The condition where the return water temperature is less than or equal to the preset return water temperature further includes: If the outlet water temperature is less than or equal to the second preset outlet water temperature, or if the current power of the wall-hung boiler is greater than the minimum power of the wall-hung boiler, then the wall-hung boiler will continue to operate.

6. The method according to claim 4, characterized in that, The step of stopping the operation of the wall-hung boiler if the outlet water temperature is greater than the second preset outlet water temperature and the current power of the wall-hung boiler has reached the minimum power of the wall-hung boiler further includes: If the outlet water temperature is lower than the second preset outlet water temperature, the wall-hung boiler will be started.

7. The method according to claim 5, characterized in that, The step of stopping the operation of the wall-hung boiler if the outlet water temperature is greater than the second preset outlet water temperature and the current power of the wall-hung boiler has reached the minimum power of the wall-hung boiler further includes: If the outlet water temperature is greater than or equal to the second preset outlet water temperature, the wall-hung boiler will remain shut down.

8. The method according to claim 1, characterized in that, The outlet water temperature includes: heating outlet water temperature and / or bathroom outlet water temperature; the first preset outlet water temperature includes: first preset heating outlet water temperature and / or first preset bathroom outlet water temperature; the return water temperature includes: heating return water temperature and / or bathroom return water temperature; the preset return water temperature includes: preset heating return water temperature and / or preset bathroom return water temperature. The heating water outlet temperature is associated with the preset heating water outlet temperature, the heating water return temperature, and the preset heating water return temperature; the bathroom water outlet temperature is associated with the preset bathroom water outlet temperature, the bathroom water return temperature, and the preset bathroom water return temperature.

9. A wall-mounted boiler and heat pump integrated unit, characterized in that, include: A wall-hung boiler, the wall-hung boiler including a heating outlet pipe and a heating return pipe; A heat pump, comprising a circulation pipeline and an intake air temperature sensor, the intake air temperature sensor being used to detect the intake air temperature of the heat pump; A heat exchanger, wherein the heat exchanger is connected to the heating return water pipe and the circulation pipe respectively; A controller, which is connected to the wall-hung boiler and the heat pump respectively, is used to perform the method according to any one of claims 1 to 8.

10. The wall-mounted boiler-heat pump integrated unit according to claim 9, characterized in that, A first temperature sensor is installed on the heating outlet pipe, and a second temperature sensor is installed on the heating return pipe. Both the first and second temperature sensors are electrically connected to the controller.

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