Wall-mounted boiler

Abstract

The present invention relates to the technical field of household appliances, and specifically to a wall-mounted boiler, comprising: a first main heating pipeline, having a first inlet and a first outlet; a second main heating pipeline, having a second inlet and a second outlet; a heating device, heating the first main heating pipeline; a flow distributor, arranged on the first main heating pipeline, between the heating device and the first outlet; an auxiliary heating pipeline, one end of which is connected to the auxiliary port of the flow distributor, and the other end of which is connected to the first inlet; a heat storage heat exchanger, arranged on the auxiliary heating pipeline, the heat storage heat exchanger includes a heat storage medium, and the heat storage medium absorbs the heat of the auxiliary heating pipeline to exchange heat with the second main heating pipeline. By setting the flow distributor, it is realized to supply heating water and domestic water at the same time; at the same time, the heat storage medium absorbs and stores the heat, and when the user has a demand, the domestic cold water directly exchanges heat with the heat stored in the heat storage medium, without waiting, and the heating is more timely, which improves the user experience.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to a wall-mounted boiler. Background Art

[0002] Wall-mounted boilers use natural gas, artificial gas or liquefied gas as fuel. After the fuel burns in the combustion chamber, the heat is absorbed by the main heat exchanger. The circulating water in the building is heated back and forth when passing through the main heat exchanger, thereby continuously outputting heat to the building, providing a heat source for the building.

[0003] The prior art discloses a wall-mounted boiler, which uses a shunt control device to divide the water heated by the burner into two branches, one for heating water and the other for bathroom water and other domestic water, so as to realize the simultaneous supply of heating and domestic water in winter and domestic hot water in summer. However, when supplying domestic water, the domestic water is heated by directly exchanging heat with the water heated by the burner through a heat exchanger. In this way, when the user has a demand, the shunt control device will control the flow of the branch leading to the domestic water, and then the water heated by the burner flowing through the branch flows into the heat exchanger to exchange heat and heat the domestic water. The heating is not timely. At the same time, affected by the user's water pressure and water flow, the user cannot directly obtain hot water when turning on the faucet, resulting in a poor user experience. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of poor user experience of the wall-mounted boiler in the prior art that can simultaneously supply heating hot water and domestic hot water, thereby providing a wall-mounted boiler that can simultaneously supply heating hot water and domestic hot water and has good user experience.

[0005] A wall-mounted boiler, comprising:

[0006] A first main heating pipeline having a first inlet and a first outlet;

[0007] A second main heating pipeline has a second inlet and a second outlet;

[0008] A heating device, heating the first main heating pipeline;

[0009] a flow distributor, provided on the first main heat supply pipeline, between the heating device and the first outlet;

[0010] an auxiliary heating pipeline, one end of which is in communication with the auxiliary port of the flow distributor, and the other end of which is in communication with the first inlet;

[0011] A heat storage heat exchanger is arranged on the auxiliary heating pipeline. The heat storage heat exchanger includes a heat storage medium. The heat storage medium absorbs the heat of the auxiliary heating pipeline to exchange heat with the second main heating pipeline.

[0012] It also includes a heat preservation structure, which is arranged on the outer wall of the heat storage heat exchanger.

[0013] The heat storage medium is water.

[0014] The heating device includes a burner and a main heat exchanger. The high-temperature flue gas generated by the burner heats the first main heating pipeline arranged in the main heat exchanger.

[0015] It also includes an auxiliary branch, one end of which is connected to the pipeline of the first main heating pipeline located between the flow distributor and the first outlet, and the other end of which is connected to the pipeline of the auxiliary heating pipeline located between the heat storage heat exchanger and the first inlet.

[0016] Also includes:

[0017] A first valve is provided on the auxiliary branch;

[0018] The second valve is arranged on the auxiliary heating pipeline between the heat storage heat exchanger and the first inlet.

[0019] The device also includes a controller, which is connected to the first valve and the second valve and is used to control the opening and closing of the first valve and the second valve.

[0020] The auxiliary heat supply pipeline is provided with a first temperature detection device on the pipeline between the heat storage heat exchanger and the first inlet, and the first temperature detection device is connected to the controller;

[0021] When the detected temperature of the first temperature detection device is greater than the preset heating temperature and the difference between the two is greater than 5° C., the controller controls the first valve to open and the second valve to close.

[0022] When the domestic water meets the preset temperature, or the detection temperature of the first temperature detection device is less than or equal to the preset heating temperature, and the difference between the two is less than 5°C, the controller controls the first valve to close and the second valve to open.

[0023] It also includes a water pressure balancing pipeline connected to the first main heating pipeline, and an expansion water tank is arranged on the water pressure balancing pipeline.

[0024] The technical solution of the present invention has the following advantages:

[0025] 1. The wall-mounted boiler provided by the present invention comprises: a first main heating pipeline having a first inlet and a first outlet; a second main heating pipeline having a second inlet and a second outlet; a heating device for heating the first main heating pipeline; a flow distributor provided on the first main heating pipeline and located between the heating device and the first outlet; an auxiliary heating pipeline, one end of which is connected to the auxiliary port of the flow distributor and the other end of which is connected to the first inlet; a heat storage heat exchanger provided on the auxiliary heating pipeline, the heat storage heat exchanger comprising a heat storage medium, the heat storage medium absorbing the heat of the auxiliary heating pipeline to exchange heat with the second main heating pipeline. By setting a flow distributor, a first main heating pipeline and a second main heating pipeline, the flow distributor distributes the water of the first main heating pipeline heated by the heating device to supply the heat required by the first aspect and the heat required by the second aspect. For example, during use, the first inlet can be connected to the return pipe of the heating pipeline, the first outlet can be connected to the water supply pipe of the heating pipeline, the second inlet can be connected to the return pipe of domestic water, and the second outlet can be connected to the water supply pipe of domestic water, so as to realize the simultaneous supply of heating water and domestic water; at the same time, since a heat storage heat exchanger is set on the auxiliary heating pipeline, the heat storage medium in the heat storage heat exchanger absorbs the heat of the auxiliary heating pipeline to supply the first main heating pipeline. The two main heating pipelines exchange heat, so that the heat storage medium absorbs the heat of the water heated by the heating device and stores it. In this way, when the user needs it, he can turn on the faucet at any time, and the domestic cold water flowing in through the second inlet can directly exchange heat with the heat stored in the heat storage medium in the heat storage heat exchanger. There is no need to wait, and the heating is more timely. Moreover, due to the stored heat of the heat storage medium, even if the user turns on multiple faucets at the same time, the demand can be met, and it is less affected by the user's water pressure and water flow. That is, when the user turns on the faucet, he can directly get hot water. It also prevents the user from frequently turning on the unit when brushing teeth, washing hands and other small water needs, thereby improving the user experience.

[0026] 2. The wall-mounted boiler provided by the present invention also includes a heat preservation structure, which is arranged on the outer wall of the heat storage heat exchanger. By arranging the heat preservation structure on the outer wall of the heat storage heat exchanger, the heat storage effect of the heat storage heat exchanger is better, and excessive heat loss to the outside is prevented.

[0027] 3. In the wall-mounted boiler provided by the present invention, the heat storage medium is water. By setting the heat storage medium as water, the heat storage function is satisfied and the heat storage medium is more convenient to obtain.

[0028] 4. The wall-mounted boiler provided by the present invention further includes an auxiliary branch, one end of which is connected to the pipeline of the first main heating pipeline located between the flow distributor and the first outlet, and the other end is connected to the pipeline of the auxiliary heating pipeline located between the heat storage heat exchanger and the first inlet. By setting up the auxiliary branch, when the wall-mounted boiler is supplying heating and domestic water at the same time, if there is any heat stored in the heat storage heat exchanger after supplying domestic water, it can be supplied to heating water through the auxiliary branch, thereby improving energy utilization.

[0029] 5. The wall-mounted boiler provided by the present invention further includes: a first valve, which is arranged on the auxiliary branch; and a second valve, which is arranged on the auxiliary heating pipeline between the heat storage heat exchanger and the first inlet. By arranging the first valve and the second valve, the wall-mounted boiler can conveniently control the parallel or series operation of the heating and domestic water supply lines during the process of simultaneously supplying heating and domestic water, so as to reasonably utilize energy.

[0030] 6. The wall-mounted boiler provided by the present invention further includes a controller, which is connected to the first valve and the second valve and is used to control the opening and closing of the first valve and the second valve. By setting the controller to be connected to the first valve and the second valve, the opening and closing of the first valve and the second valve can be automatically controlled to achieve full automatic control of the wall-mounted boiler.

[0031] 7. In the wall-mounted boiler provided by the present invention, the auxiliary heating pipeline is provided with a first temperature detection device on the pipeline between the heat storage heat exchanger and the first inlet, and the first temperature detection device is connected to the controller; when the detection temperature of the first temperature detection device is greater than the preset heating temperature, and the difference between the two is greater than 5°C, the controller controls the first valve to open and the second valve to close. By setting the first temperature detection device, when the detection temperature of the first temperature detection device is greater than the preset heating temperature, and the difference between the two is greater than 5°C, the controller controls the first valve to open and the second valve to close, so that the pipelines for heating water and domestic water are operated in series, that is, the stored heat of the heat storage heat exchanger can satisfy the domestic water demand and still have some left to supply heating water, thus ensuring full utilization of energy.

[0032] 8. For the wall-mounted boiler provided by the present invention, when the domestic water meets the preset temperature, or the detected temperature of the first temperature detection device is less than or equal to the preset heating temperature, and the difference between the two is less than 5°C, the controller controls the first valve to close and the second valve to open. Since the domestic water meets the preset temperature requirement, there is no need to supply heat to the domestic water; or when the detected temperature of the first temperature detection device is less than or equal to the heating temperature, and the difference between the two is less than 5°C, the stored heat of the heat storage heat exchanger can only supply domestic water, and there is no excess energy to supply heating water. The controller controls the first valve to close and the second valve to open, and the heating water and domestic water are turned on in parallel mode to ensure the normal operation of the wall-mounted boiler.

[0033] 9. The wall-mounted boiler provided by the present invention further comprises a water pressure balancing pipeline connected to the first main heating pipeline, and an expansion water tank is arranged on the water pressure balancing pipeline. By arranging the expansion water tank, the water pressure balance of each pipeline of the wall-mounted boiler can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of the wall-mounted boiler of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the wall-mounted boiler of the present invention supplying heating water independently;

[0037] Figure 3 This is a schematic diagram of the structure of the wall-mounted boiler of the present invention that supplies domestic water independently;

[0038] Figure 4 It is a structural schematic diagram of a parallel connection mode in which a wall-mounted boiler of the present invention supplies heating water and domestic water at the same time;

[0039] Figure 5 It is a structural schematic diagram of a series connection mode in which a wall-mounted boiler of the present invention supplies heating water and domestic water at the same time;

[0040] Description of reference numerals:

[0041] 1- auxiliary branch; 2- main heat exchanger; 3- burner; 4- second temperature detection device; 5- flow distributor; 6- heat storage heat exchanger; 7- fourth temperature detection device; 8- second outlet; 9- second inlet; 10- third temperature detection device; 11- heating pipeline; 12- first temperature detection device; 13- first valve; 14- second valve; 15- water pump; 16- proportional valve; 17- expansion water tank; 18- first outlet; 19- first inlet; 20- auxiliary heating pipeline; 21- first main heating pipeline; 22- second main heating pipeline. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] like Figure 1 - Figure 5 As shown, this embodiment provides a wall-mounted boiler, including: a first main heating pipeline 21, a second main heating pipeline 22, a heating device, a flow distributor 5, an auxiliary heating pipeline 20 and a heat storage heat exchanger 6.

[0045] The first main heating pipeline 21 has a first inlet 19 and a first outlet 18; the second main heating pipeline 22 has a second inlet 9 and a second outlet 8; a heating device heats the first main heating pipeline 21; a flow distributor 5 is provided on the first main heating pipeline 21 and is located between the heating device and the first outlet 18; an auxiliary heating pipeline 20 is connected to the auxiliary port of the flow distributor 5 at one end and to the first inlet 19 at the other end; a heat storage heat exchanger 6 is provided on the auxiliary heating pipeline 20, and the heat storage heat exchanger 6 includes a heat storage medium, and the heat storage medium absorbs the heat of the auxiliary heating pipeline 20 to exchange heat with the second main heating pipeline 22.

[0046] By setting the flow distributor 5, the first main heating pipeline 21 and the second main heating pipeline 22, the flow distributor 5 distributes the water of the first main heating pipeline 21 heated by the heating device to supply the heat required by the first aspect and the heat required by the second aspect. For example, during use, the first inlet 19 can be connected to the return pipe of the heating pipeline 11, the first outlet 18 can be connected to the water supply pipe of the heating pipeline 11, the second inlet 9 can be connected to the return pipe of domestic water, and the second outlet 8 can be connected to the water supply pipe of domestic water, so as to realize the simultaneous supply of heating water and domestic water (domestic water includes bathroom water, kitchen water, etc.); at the same time, since the heat storage heat exchanger 6 is provided on the auxiliary heating pipeline 20, the heat storage heat exchanger 6 has a heat storage capacity of 1000W. The heat storage medium absorbs the heat of the auxiliary heating pipeline 20 to exchange heat with the second main heating pipeline 22, so that the heat storage medium absorbs the heat of the water heated by the heating device and stores it. In this way, when the user needs it, he can turn on the faucet at any time, and the domestic cold water flowing in through the second inlet 9 can directly exchange heat with the heat stored in the heat storage medium in the heat storage heat exchanger 6. There is no need to wait, and the heating is more timely. Moreover, due to the stored heat of the heat storage medium, even if the user turns on multiple faucets at the same time, the demand can be met, and it is less affected by the user's water pressure and water flow, that is, when the user turns on the faucet, hot water can be directly obtained, which also prevents the problem of frequent opening of the unit when the user needs small water volume such as brushing teeth and washing hands, thereby improving the user experience.

[0047] In order to improve the heat storage effect of the heat storage heat exchanger 6, the wall-mounted boiler in this embodiment also includes a heat preservation structure, which is arranged on the outer wall of the heat storage heat exchanger 6. By arranging the heat preservation structure on the outer wall of the heat storage heat exchanger 6, excessive heat loss to the outside is prevented. Specifically, the heat preservation structure in this embodiment is a heat preservation layer, such as heat preservation foam, which is laid on the outer wall of the heat storage heat exchanger 6. As a convertible implementation method, it is also possible to arrange a heat preservation device outside the outer wall of the heat storage heat exchanger 6.

[0048] The heat storage medium in this embodiment is water. By setting the heat storage medium to water, the heat storage function is satisfied and the heat storage medium is more convenient to obtain. As a convertible implementation, the heat storage medium may also be a sensible heat storage material or a phase change heat storage material of other materials, such as molten salts, paraffins, ester acids, etc.

[0049] The heating device in this embodiment includes a burner 3 and a main heat exchanger 2. The high-temperature flue gas generated by the burner 3 heats the first main heat supply pipeline 21 disposed in the main heat exchanger 2. As a convertible implementation, the heating device may not use the burner 3 for heating, but may use other heating devices to achieve the heating function, such as electric heating.

[0050] The wall-mounted boiler in this embodiment further includes an auxiliary branch 1, one end of which is connected to the first main heating pipeline 21 located between the flow distributor 5 and the first outlet 18, and the other end of which is connected to the auxiliary heating pipeline 20 located between the heat storage heat exchanger 6 and the first inlet 19. By providing the auxiliary branch 1, when the wall-mounted boiler is supplying heating and domestic water at the same time, if the heat stored in the heat storage heat exchanger 6 is left after supplying domestic water, it can be supplied to the heating water through the auxiliary branch 1, thereby improving the energy utilization rate.

[0051] The wall-mounted boiler in this embodiment further includes: a first valve 13, which is arranged on the auxiliary branch 1; and a second valve 14, which is arranged on the auxiliary heating pipeline 20 between the heat storage heat exchanger 6 and the first inlet 19. By arranging the first valve 13 and the second valve 14, the wall-mounted boiler can conveniently control the parallel or series operation of the heating and domestic water supply lines during the process of simultaneously supplying heating and domestic water, so as to reasonably utilize energy.

[0052] In order to facilitate automatic control, the wall-mounted boiler in this embodiment also includes a controller, which is connected to the first valve 13 and the second valve 14 and is used to control the opening and closing of the first valve 13 and the second valve 14. By setting the controller to be connected to the first valve 13 and the second valve 14, the opening and closing of the first valve 13 and the second valve 14 can be automatically controlled to achieve full automatic control of the wall-mounted boiler. As a convertible implementation method, it is also possible that the controller is not set, and the first valve 13 and the second valve 14 are manually opened and closed to switch the heating and domestic water supply in parallel or in series.

[0053] The auxiliary heating pipeline 20 in this embodiment is provided with a first temperature detection device 12 on the pipeline between the heat storage heat exchanger 6 and the first inlet 19, and the first temperature detection device 12 is connected to the controller; when the temperature detected by the first temperature detection device 12 is greater than the preset heating temperature, and the difference between the two is greater than 5°C, the controller controls the first valve 13 to open and the second valve 14 to close. By setting the first temperature detection device 12, when the temperature detected by the first temperature detection device 12 is greater than the preset heating temperature, and the difference between the two is greater than 5°C, the controller controls the first valve 13 to open and the second valve 14 to close, so that the pipelines for heating water and domestic water are operated in series, that is, the stored heat of the heat storage heat exchanger 6 can satisfy the domestic water demand and still have some left to supply heating water, thus ensuring full utilization of energy.

[0054] In the wall-mounted boiler in this embodiment, when the domestic water meets the preset temperature, or the detected temperature of the first temperature detection device 12 is less than or equal to the preset heating temperature, and the difference between the two is less than 5°C, the controller controls the first valve 13 to close and the second valve 14 to open. Since the domestic water meets the preset temperature requirement, there is no need to supply heat to the domestic water; or when the detected temperature of the first temperature detection device 12 is less than or equal to the heating temperature, and the difference between the two is less than 5°C, the stored heat of the heat storage heat exchanger 6 can only supply domestic water, and there is no excess energy to supply heating water. The controller controls the first valve 13 to close and the second valve 14 to open, and the heating water and domestic water start to operate in parallel mode, ensuring the normal operation of the wall-mounted boiler.

[0055] In order to ensure the water pressure balance of each pipeline of the wall-mounted boiler, the wall-mounted boiler in this embodiment also includes a water pressure balance pipeline connected to the first main heating pipeline 21, and an expansion water tank 17 is provided on the water pressure balance pipeline.

[0056] In order to ensure water circulation in each pipeline of the wall-mounted boiler, the wall-mounted boiler in this embodiment also includes a water pump 15 arranged on the first main heating pipeline 21.

[0057] In order to facilitate temperature control, the wall-mounted boiler in this embodiment also includes a second temperature detection device 4, a third temperature detection device 10 and a fourth temperature detection device 7, and the second temperature detection device 4, the third temperature detection device 10 and the fourth temperature detection device 7 are all electrically connected to the controller. The second temperature detection device 4 is arranged on the first main heat supply pipeline 21, located between the main heat exchanger 2 and the flow distributor 5, the third temperature detection device 10 is arranged on the first main heat supply pipeline 21, located between the flow distributor 5 and the first outlet 18, and the fourth temperature detection device 7 is arranged in the heat storage heat exchanger 6. Specifically, the first temperature detection device 12, the second temperature detection device 4, the third temperature detection device 10 and the fourth temperature detection device 7 in this embodiment are all temperature sensing packages. As a convertible embodiment, it can also be that the first temperature detection device 12, the second temperature detection device 4, the third temperature detection device 10 and the fourth temperature detection device 7 are other devices capable of detecting temperature, such as a temperature sensor, or any combination of a temperature sensing package and a temperature sensor.

[0058] The controller in this embodiment is connected to the flow distributor 5 to control the opening of each port of the flow distributor 5. When working, the wall-mounted boiler can realize a mode of supplying heating water alone, a mode of supplying domestic water alone, and a mode of supplying heating water and domestic water at the same time, as follows:

[0059] 1) Single heating water supply mode: Figure 2As shown, when the wall-mounted boiler is operated in winter, if the user has no demand for domestic hot water, the controller controls the opening of the auxiliary port of the flow distributor 5 connected to the heat storage heat exchanger 6 to be 0, and the opening of the port of the flow distributor 5 connected to the first outlet 18 is the largest. The flow distributor 5 controls all the hot water heated by the burner 3 to be supplied to the heating pipeline 11, and the controller controls the first valve 13 and the second valve 14 to be in the closed state. The water in the wall-mounted boiler is heated according to the temperature of the boiler. Figure 2 The water circulates in the direction indicated by the middle arrow, and the hot water heated by the burner 3 all flows to the heating pipeline 11 (such as floor heating or radiator) installed indoors for heat radiation, thereby realizing a separate heating water supply mode.

[0060] 2) Separate domestic water supply mode: Figure 3 As shown, when the wall-mounted boiler is operated in summer, since the user has no heating demand, the controller controls the opening of the port connecting the flow distributor 5 with the first outlet 18 to be 0, and the opening of the auxiliary port connecting the flow distributor 5 with the heat storage heat exchanger 6 is the largest. The flow distributor 5 controls all the hot water heated by the burner 3 to be supplied to the heat storage heat exchanger 6. The controller controls the first valve 13 to be closed and the second valve 14 to be opened. The water in the wall-mounted boiler is heated according to the temperature of the boiler. Figure 3 The hot water circulates in the direction indicated by the middle arrow, and all the hot water heated by the burner 3 flows to the heat storage heat exchanger 6. The heat storage medium in the heat storage heat exchanger 6 is heated by the heat transfer of the coil in the heat storage heat exchanger 6, thereby heating the domestic water and realizing a separate domestic water supply mode. The user's set water temperature can be kept constant, and the user can use it immediately after turning it on, avoiding the problem of frequent opening of the wall-mounted boiler due to small water demands such as brushing teeth and washing hands.

[0061] 3) Mode of supplying heating water and domestic water at the same time: When the wall-mounted boiler is operated in winter, when the user has both domestic hot water and heating hot water needs, the auxiliary port of the flow distributor 5 connected to the heat storage heat exchanger 6 and the port of the flow distributor 5 connected to the first outlet 18 are both open, and the flow distributor 5 controls the hot water heated by the burner 3 to be supplied to the heating pipeline 11 and the domestic water pipeline respectively, which are operated in parallel. Figure 4 As shown, the controller controls the first valve 13 to close and the second valve 14 to open, and the water in the wall-mounted boiler is adjusted according to Figure 4 The water circulates in the direction indicated by the middle arrow to meet the user's needs for heating water and domestic water.

[0062] Specifically, in order to improve the user's comfort, the controller controls the flow distributor 5 to give priority to meeting the demand for domestic water and to meet the demand for heating water to the maximum extent. When the user uses bathroom hot water for a long time, the water temperature in the heat storage heat exchanger 6 will drop, and there will be a difference between the user's set temperature value and the actual temperature of the fourth temperature detection device 7. The controller controls to increase the flow of the water pump 15 and the opening of the proportional valve 16 of the burner 3, increase the temperature at the second temperature detection device 4, and control the flow distributor 5 to increase the hot water flow to the heat storage heat exchanger 6. When the actual temperature detected by the fourth temperature detection device 7 is lower than the user's set temperature, continue to increase the flow of hot water from the flow distributor 5 to the heat storage heat exchanger 6 until the temperature detected by the fourth temperature detection device 7 is equal to the user's set temperature; then determine whether the actual temperature detected by the third temperature detection device 10 is lower than the heating temperature set by the user. When the actual temperature detected by the third temperature detection device 10 is lower than the heating temperature set by the user, the controller controls the flow distributor 5 to increase the hot water flow to the heating pipeline 11 until the actual temperature detected by the third temperature detection device 10 is equal to the heating temperature set by the user.

[0063] When the wall-mounted boiler supplies heating water and domestic water at the same time, the two flow paths can also be operated in series, such as Figure 5 As shown, the controller controls the opening of the port of the flow distributor 5 connected to the first outlet 18 to be 0, and the opening of the auxiliary port of the flow distributor 5 connected to the heat storage heat exchanger 6 is the largest. The flow distributor 5 controls all the hot water heated by the burner 3 to be supplied to the heat storage heat exchanger 6, and the controller controls the first valve 13 to be opened and the second valve 14 to be closed. The water in the wall-mounted boiler is Figure 5 The water circulates in the direction indicated by the middle arrow. The hot water heated by the burner 3 is first exchanged with the heat storage medium in the heat storage heat exchanger 6, and the remaining heat is then used for the heating pipeline 11. The operating condition of the wall-mounted boiler in series is that the water temperature of the auxiliary heating pipeline 20 after heat exchange with the heat storage heat exchanger 6 is still greater than the preset heating temperature, and the difference between the two is greater than 5°C. This ensures that the remaining heat after heat exchange in the heat storage heat exchanger 6 can be effectively used for heating. This operating mode is mainly bathroom hot water, and heating is auxiliary, which is conducive to full utilization of heat. When the domestic water meets the preset temperature, or the detection temperature of the first temperature detection device 12 is less than or equal to the preset heating temperature, and the difference between the two is less than 5°C, the wall-mounted boiler automatically switches to the following mode. Figure 4 The parallel operation mode shown.

[0064] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A wall-mounted boiler, characterized in that: include: A first main heating pipeline (21) having a first inlet (19) and a first outlet (18); A second main heating pipeline (22) having a second inlet (9) and a second outlet (8); A heating device for heating the first main heating pipeline (21); A flow distributor (5) is provided on the first main heat supply pipeline (21) and is located between the heating device and the first outlet (18); an auxiliary heating pipeline (20), one end of which is in communication with the auxiliary port of the flow distributor (5), and the other end of which is in communication with the first inlet (19); A heat storage heat exchanger (6) is provided on the auxiliary heat supply pipeline (20), the heat storage heat exchanger (6) comprising a heat storage medium, the heat storage medium absorbing heat from the auxiliary heat supply pipeline (20) to perform heat exchange on the second main heat supply pipeline (22); an auxiliary branch (1), one end of which is connected to a pipeline of the first main heat supply pipeline (21) located between the flow distributor (5) and the first outlet (18), and the other end of which is connected to a pipeline of the auxiliary heat supply pipeline (20) located between the heat storage heat exchanger (6) and the first inlet (19); A first valve (13) is provided on the auxiliary branch (1); A second valve (14) is provided on the auxiliary heat supply pipeline (20) between the heat storage heat exchanger (6) and the first inlet (19); A controller, the controller being connected to the first valve (13) and the second valve (14) and being used to control the opening and closing of the first valve (13) and the second valve (14); The auxiliary heat supply pipeline (20) is provided with a first temperature detection device (12) on the pipeline between the heat storage heat exchanger (6) and the first inlet (19), and the first temperature detection device (12) is connected to the controller; When the temperature detected by the first temperature detection device (12) is greater than the preset heating temperature and the difference between the two is greater than 5°C, the controller controls the first valve (13) to open and the second valve (14) to close; When the domestic water meets the preset temperature, or the detected temperature of the first temperature detection device (12) is less than or equal to the preset heating temperature, and the difference between the two is less than 5°C, the controller controls the first valve (13) to close and the second valve (14) to open.

2. The wall-mounted boiler according to claim 1, characterized in that: It also includes a heat preservation structure, which is arranged on the outer wall of the heat storage heat exchanger (6).

3. The wall-mounted boiler according to claim 1, characterized in that: The heat storage medium is water.

4. The wall-mounted boiler according to claim 1, characterized in that: The heating device comprises a burner (3) and a main heat exchanger (2), and the high-temperature flue gas generated by the burner (3) heats the first main heating pipeline (21) provided in the main heat exchanger (2).

5. The wall-mounted boiler according to any one of claims 1 to 4, characterized in that: It also comprises a water pressure balancing pipeline connected to the first main heating pipeline (21), and an expansion water tank (17) is provided on the water pressure balancing pipeline.

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