Water heating equipment

Abstract

The utility model provides water heating equipment. The water heating equipment comprises a heat exchange module, the heat pump module is connected with the heat exchange module, and the heat pump module is used for absorbing external heat and transferring the absorbed heat to the heat exchange module; the heating device is connected with the heat exchange module, the heating device comprises a burner, and the burner burns fuel gas to provide heat for the heating device, so that the heat is transferred to the heat exchange module; the heat exchange terminal is connected with the heat exchange module; and the control module controls the operation of the heat pump module and the heating device according to the temperature required by the heat exchange terminal, and the water heating equipment solves the technical problem that the working efficiency of a water heater is low.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a water heater. Background Art

[0002] Multifunctional heat pump water heaters are popular among consumers due to their excellent heating and cooling capabilities, and are currently exported to most countries and regions around the world; at the same time, natural gas wall-mounted boilers also have a wide range of uses.

[0003] However, multi-function heat pump water heaters and wall-mounted boilers each have their own advantages, but their energy efficiency is limited when used alone. To combine the advantages of both, existing systems typically require separate installations, taking up a large amount of space.

[0004] Therefore, the prior art needs to be further developed. Utility Model Content

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide a water heating device to solve the technical problem of low working efficiency of water heaters in the related art.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a hot water device is provided, including: a heat exchange module; a heat pump module, the heat pump module is connected to the heat exchange module, the heat pump module is used to absorb external heat and transfer the absorbed heat to the heat exchange module; a heating device, the heating device is connected to the heat exchange module, the heating device includes a burner, the burner provides heat to the heating device by burning gas, and thus transfers the heat to the heat exchange module; a heat exchange terminal, the heat exchange terminal is connected to the heat exchange module; a control module, the control module controls the operation of the heat pump module and the heating device according to the temperature required by the heat exchange terminal.

[0007] Furthermore, the hot water equipment also includes: a heating pipeline, one end of the heating pipeline is connected to the heat exchange module, and the other end of the heating pipeline is provided with a regulating valve, and the regulating valve has at least two liquid supply ports; wherein, there are at least two heat exchange terminals, and at least two heat exchange terminals are connected to the at least two liquid supply ports in a one-to-one correspondence.

[0008] Furthermore, the hot water equipment also includes a heating branch, one end of the heating branch is connected to the liquid supply port of the regulating valve, and the other end of the heating branch is connected to the heat exchange terminal. A stop valve is provided on the heating branch for controlling the on and off of the heating branch; and / or, the control module is used to control the opening of at least two liquid supply ports.

[0009] Furthermore, the hot water equipment also includes a liquid return pipeline, one end of the liquid return pipeline is connected to the heat exchange module, and the other end of the liquid return pipeline is connected to the heat exchange terminal.

[0010] Furthermore, the return liquid pipeline is provided with a buffer water tank having a water inlet and a water outlet connected to the return liquid pipeline to store the fluid in the return liquid pipeline or to circulate the stored fluid into the return liquid pipeline.

[0011] Furthermore, a flow regulating valve is provided on the liquid return pipeline to regulate the flow of the fluid in the liquid return pipeline through the flow regulating valve.

[0012] Furthermore, the return liquid pipeline is provided with: a discharge pipeline for discharging the fluid in the return liquid pipeline; and a balancing valve for controlling the on-off of the discharge pipeline is provided on the discharge pipeline.

[0013] Furthermore, a check valve is provided on the liquid return pipeline, and the heat exchange terminal is connected to the liquid return pipeline via the check valve.

[0014] Furthermore, a filter is provided on the liquid return pipeline, and the filter is used to filter the fluid in the liquid return pipeline.

[0015] Furthermore, an expansion tank is provided on the liquid return pipeline.

[0016] Beneficial effects:

[0017] The water heater of the present invention includes a heat exchange module; a heat pump module connected to the heat exchange module, configured to absorb external heat and transfer it to the heat exchange module; a heating device connected to the heat exchange module, comprising a burner that burns gas to provide heat to the heating device, thereby transferring the heat to the heat exchange module; a heat exchange terminal connected to the heat exchange module; and a control module that controls the operation of the heat pump module and the heating device based on the temperature required by the heat exchange terminal. This configuration integrates the functions of a wall-mounted boiler (heating device) and a water heater (heat pump module), leveraging the advantages of different water heating methods. This provides an efficient and energy-saving hot water heating solution. The water heater of this embodiment not only saves space but also reduces energy consumption, improving water heating and heating efficiency, thereby resolving the technical issue of low water heater efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the water heating device used in the embodiment of the present utility model;

[0019] Figure 2 It is a work flow chart of the hot water device adopted in the embodiment of the present utility model.

[0020] The above drawings include the following reference numerals:

[0021] 1. Heat pump module; 2. Stop valve; 3. Filter; 4. Flow regulating valve; 5. Heat exchange module; 6. Burner; 7. Gas valve; 8. Expansion tank; 9. Balancing valve; 10. Buffer water tank; 11. First heat exchange terminal; 12. Second heat exchange terminal; 13. Control valve; 14. Check valve. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0023] See also Figures 1 to 2 According to an embodiment of the present invention, a water heater is provided, comprising: a heat exchange module 5; a heat pump module 1 connected to the heat exchange module 5, configured to absorb external heat and transfer the absorbed heat to the heat exchange module 5; a heating device connected to the heat exchange module 5, comprising a burner 6 that burns gas to provide heat to the heating device, thereby transferring the heat to the heat exchange module 5; a heat exchange terminal connected to the heat exchange module 5; and a control module that controls the operation of the heat pump module 1 and the heating device based on the temperature required by the heat exchange terminal. This configuration integrates the functions of a wall-mounted boiler (heating device) and a water heater (heat pump module 1), leveraging the advantages of different water heating methods. This provides an efficient and energy-saving hot water heating solution. This water heater not only saves space but also reduces energy consumption, improving water heating and heating efficiency, thereby resolving the technical issue of low water heater efficiency.

[0024] Specifically, existing water heaters have advantages such as versatility and high energy efficiency. Their disadvantages include numerous factors affecting energy efficiency, long operating times, and high energy consumption when operating two systems simultaneously (when using both domestic hot water and floor heating, electric heating is required, which has lower energy efficiency than wall-mounted boilers). Wall-mounted boilers have advantages such as stable energy efficiency, minimal fluctuations, and rapid heating. Their disadvantages include low energy efficiency and the ability to only produce hot water (floor heating alone requires too much heat, and if energy efficiency is low, the energy consumption is high). The two systems can be merged into one. Controls can then leverage their respective strengths to compensate for their shortcomings.

[0025] In the water heater of this embodiment, see Figure 1The water heater further includes a heat supply pipeline, one end of which is connected to the heating device, and a regulating valve 13 disposed at the other end of the heat supply pipeline. The regulating valve 13 has at least two liquid supply ports. The heat exchange terminals are provided at least two times, and the at least two heat exchange terminals are connected to the at least two liquid supply ports in a one-to-one correspondence. In this way, heat from the heat exchange module 5 is transferred to different heat exchange terminals via the heat supply pipeline, thereby meeting different heating needs.

[0026] See also Figure 1 In the water heating device of this embodiment, the water heating device further includes a heat supply branch, one end of the heat supply branch is connected to the liquid supply port of the regulating valve 13, and the other end of the heat supply branch is connected to the heat exchange terminal, and a stop valve 2 for controlling the on and off of the heat supply branch is provided on the heat supply branch; and / or the control module is used to control the opening of at least two of the liquid supply ports.

[0027] With the above arrangement, the flow direction of the fluid can be controlled by the stop valve 2. The control module can adjust the flow rate of the fluid flowing into each heat exchange terminal by adjusting the opening of the liquid supply port.

[0028] In the water heater of this embodiment, see Figure 1 The water heater further includes a liquid return line, one end of which is connected to the heat exchange module 5, and the other end of which is connected to the heat exchange terminal. Thus, the heat-exchanging fluid flows through the heat exchange terminal, exchanges heat, and then flows back to the heat exchange module 5 to be heated.

[0029] In the water heater of this embodiment, see Figure 1 The return liquid pipeline is provided with: a buffer water tank 10, the buffer water tank 10 has a water inlet and a water outlet connected to the return liquid pipeline to store the fluid in the return liquid pipeline, or to circulate the stored fluid into the return liquid pipeline.

[0030] In the water heater of this embodiment, see Figure 1 A flow regulating valve 4 is provided on the return liquid pipeline to adjust the flow rate of the fluid in the return liquid pipeline through the flow regulating valve 4.

[0031] In the water heater of this embodiment, see Figure 1 The return liquid pipeline is provided with: a discharge pipeline, which is used to discharge the fluid in the return liquid pipeline; and a balancing valve 9 is provided on the discharge pipeline for controlling the on-off of the discharge pipeline.

[0032] In the water heater of this embodiment, see Figure 1 A check valve 14 is provided on the liquid return pipeline, and the heat exchange terminal is connected to the liquid return pipeline through the check valve 14.

[0033] In the water heater of this embodiment, see Figure 1 A filter 3 is provided on the liquid return pipeline, and the filter 3 is used to filter the fluid in the liquid return pipeline.

[0034] In the water heater of this embodiment, see Figure 1 , an expansion tank 8 is provided on the liquid return line. The change of water temperature will cause the volume to be different. Setting the expansion tank 8 can increase the capacity and provide a place for water to be accommodated, thereby avoiding the bursting of the water pipe.

[0035] By adopting the above arrangement, the state of the fluid in the liquid return pipeline is controlled, so that the instant heating device can operate smoothly.

[0036] The control method of the water heater of this embodiment is described as follows:

[0037] See also Figure 2 The wall-mounted boiler (the heating device in this embodiment) and the indoor unit of the split heat pump (heat pump module 1 in this embodiment) are integrated into a single device. Their heat exchange elements can use the same heat exchanger, and the heating circulation system also shares the same system. The wall-mounted boiler's control system can be integrated into the heat pump, receiving information received by the heat pump, such as ambient temperature, water tank temperature sensor, etc.

[0038] After the user sets the mode and temperature and turns on the machine, the control system will control the three-way valve (the regulating valve in this embodiment) to turn on the heating direction according to the selected mode.

[0039] See also Figure 1 When the user uses the floor heating (the first heat exchange terminal 11 of this embodiment) function, the normal operating temperature of the floor heating is 35°C. At this time, adjusting the three-way valve will allow water to flow in direction A and close direction B. The required water temperature is relatively low at this time, and only the compressor needs to be started at a low frequency.

[0040] When the user uses the domestic hot water function (the second heat exchange terminal 12 of this embodiment), the normal domestic water temperature is between 50 and 60°C. At this time, the three-way valve is adjusted to allow flow in direction B and close direction A. The domestic hot water usage time is determined. If the domestic hot water usage time is less than 1 hour, the gas valve 7 is directly opened, the burner 6 is powered on, and the water tank temperature of the domestic hot water is monitored. When the water tank temperature reaches the set temperature, the gas valve 7 and burner 6 are closed. If the domestic hot water usage time is ≥ 1 hour, the COP value in the database is read using the water tank temperature, the set temperature, and the ambient temperature to determine the COP value. If the COP value is less than 2.5, the gas valve 7 and burner 6 are opened as described above to produce hot water. If the COP value is ≥ 2.5, the compressor is started at high frequency and the real-time COP and time are calculated based on the water flow rate and the inlet and outlet water temperatures of the water tank. If the real-time COP value is less than 2.5 or the operating time is less than 1 hour, the compressor is stopped and the gas valve 7 and burner 6 are opened to produce hot water. The intelligent control will import the unit parameters, nominal performance parameters and the correction coefficient table of the unit's publicity before the new operation. Using this data, the intelligent system can use the ambient temperature and water temperature read before using the heat pump to determine an initial COP value, and can also provide feedback after each use of the heat pump, and supplement the database with the COP calculated for the ambient temperature and water temperature during the day of use. When the value of the feedback is less than 90% of the imported value for three consecutive times, the intelligent system will feedback the user the instruction that maintenance is required. If the value of the feedback is less than 90% of the imported value for five consecutive times, the COP value corresponding to the ambient temperature and water temperature in the database will be updated for subsequent initial COP value use, and when the subsequently updated COP reaches 60% of the initial database, there will be a reminder of device aging. The characteristics of the heat pump COP database are as follows: when producing hot water of the same water temperature, the COP increases with the increase of the ambient temperature; when producing hot water at the same ambient temperature, the COP decreases as the water temperature increases; due to this characteristic, during the day (when the temperature is higher than at night), when hot water production starts (the water temperature is low), the COP of using a heat pump to produce hot water will be particularly high; but as time goes by (transitioning to the night, the ambient temperature becomes lower), the water temperature gradually approaches the set temperature (the water temperature is high). At this time, the COP of using a heat pump to produce hot water will be much lower. Through real-time calculation, an accurate high and low value can be determined, which can reduce energy consumption and improve its hot water energy efficiency.

[0041] Supplement: COP is the hot water energy efficiency, which is defined as the ratio of the water side capacity to the power of the water heater;

[0042] Water side capacity W1=c·m(T1-T2);

[0043] c-specific heat of water 4.186kw*s, m-flow rate of water m³ / s;

[0044] Power W2=Pt;

[0045] P-power consumption, t-time;

[0046] cop water heater = W1 / W2;

[0047] The conversion of the wall-mounted boiler into cop is calculated as follows: the power W3 converted from the gas consumption within the time t needs to be calculated;

[0048] W3=(AC1 / C2)t;

[0049] A-gas consumption, C1-gas price, C2-electricity price;

[0050] COP of wall-mounted boiler = W1 / W3; the COP of wall-mounted boiler is roughly 2.5.

[0051] When the user needs to use hot water and floor heating at the same time, adjusting the three-way valve will allow direction B to flow completely, and direction A will be controlled according to the ambient temperature sensing bag of the floor heating; the stop valve 2 in front of the floor heating will be opened to merge the hot water coming from direction A, and control the flow of hot water in direction A so that the ambient temperature of the floor heating reaches the set temperature of the floor heating; since there are two terminals that need hot water at this time, and they will be diverted by adjusting the three-way valve, the compressor will start at a high frequency at this time, and the gas valve 7 and burner 6 will also be opened synchronously. When any one terminal stops running, it will be judged as running separately as mentioned above.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0054] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0055] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0056] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A water heating device, characterized in that: include: heat exchange module (5); A heat pump module (1), the heat pump module (1) being connected to the heat exchange module (5), the heat pump module (1) being used to absorb external heat and transfer the absorbed heat to the heat exchange module (5); A heating device, the heating device being connected to the heat exchange module (5), the heating device comprising a burner (6), the burner (6) providing heat to the heating device by burning fuel gas, thereby transferring the heat to the heat exchange module (5); A heat exchange terminal connected to the heat exchange module (5); A control module, wherein the control module controls the operation of the heat pump module (1) and the heating device according to the temperature required by the heat exchange terminal.

2. The water heating device according to claim 1, characterized in that: The water heating device further comprises: A heating pipeline, one end of which is connected to the heat exchange module (5), and the other end of which is provided with a regulating valve (13), wherein the regulating valve (13) has at least two liquid supply ports; There are at least two heat exchange terminals, and the at least two heat exchange terminals are connected to the at least two liquid supply ports in a one-to-one correspondence.

3. The water heating device according to claim 2, characterized in that: The water heater further comprises a heat supply branch, one end of the heat supply branch is connected to the liquid supply port of the regulating valve (13), the other end of the heat supply branch is connected to the heat exchange terminal, and a stop valve (2) is provided on the heat supply branch for controlling the on-off of the heat supply branch; and / or, The control module is used to control the opening of at least two of the liquid supply ports.

4. The water heating device according to claim 1, characterized in that: The water heater further comprises a liquid return pipeline, one end of which is connected to the heat exchange module (5), and the other end of which is connected to the heat exchange terminal.

5. The water heating device according to claim 4, characterized in that: The liquid return pipeline is provided with: A buffer water tank (10) is provided with a water inlet and a water outlet communicated with the liquid return pipeline, so as to store the fluid in the liquid return pipeline or to circulate the stored fluid into the liquid return pipeline.

6. The water heating device according to claim 4, characterized in that: A flow regulating valve (4) is provided on the liquid return pipeline to regulate the flow of the fluid in the liquid return pipeline through the flow regulating valve (4).

7. The water heating device according to claim 4, characterized in that: The return liquid pipeline is equipped with: A liquid discharge pipeline is used to discharge the fluid in the liquid return pipeline; a balancing valve (9) is provided on the liquid discharge pipeline for controlling the on-off of the liquid discharge pipeline.

8. The water heating device according to claim 4, characterized in that: A check valve (14) is provided on the liquid return pipeline, and the heat exchange terminal is connected to the liquid return pipeline via the check valve (14).

9. The water heating device according to claim 4, characterized in that: A filter (3) is provided on the liquid return pipeline, and the filter (3) is used to filter the fluid in the liquid return pipeline.

10. The water heating device according to claim 4, characterized in that: An expansion tank (8) is provided on the liquid return pipeline.

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