Heat exchange type electric water heater

Abstract

The embodiment of the utility model discloses a heat exchange type electric water heater, which relates to the technical field of electric water heaters, and comprises a heat insulation box, a heat exchanger and a circulating pump, and the heat exchanger is arranged on the outer side of the heat insulation box; the heat exchanger comprises a heat exchange medium flow channel and a water flow channel, the heat exchange medium flow channel is connected with the heat preservation box through a circulating pipeline, and the circulating pump is arranged on the circulating pipeline; the water flow channel is used for being connected with a water source inlet and a hot water outlet. Due to the fact that the heat exchanger is arranged on the circulating pipeline outside the heat preservation box and is an independently-arranged component, installation and maintenance are convenient, leakage can be found easily if leakage occurs, and therefore the phenomenon that bathing water is mixed with the heat exchange medium, and bathing water pollution is caused is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to water heater technical field especially relates to a heat exchange type electric water heater. BACKGROUND

[0002] With the improvement of people's living standards, more and more consumers not only need to take hot water bath, but also pay more attention to health, and the bathing water is required to be higher. Because the traditional heat storage type electric water heater is heated in advance, and the water tank is easy to deposit silt, magnesium rod residue, scale and the like, the bathing water is not healthy, so more and more heat exchange type electric water heaters appear in the market.

[0003] The heat exchange type electric water heater is heated in advance, and the tap water and the heat exchange medium are heated and heated by the heater for direct use. The advantages are: 1. Through heat exchange, the temperature of tap water is increased, and the power is small and the water output is large when heated again. 2. Because the tap water is flowing water, that is, living water, direct heating is used, and the water is more healthy.

[0004] However, the inventor found that the existing heat exchange type electric water heater has the following problems: 1. The heat exchanger is immersed in the heat exchange medium, and when leakage occurs, it is not easy to find, and it is easy to cause the bathing water pollution, and in addition, the heat exchanger is not convenient to repair and replace after leakage; 2. The first heater is arranged on the hot water outlet, and when the user's voltage fluctuates, the bathing water temperature fluctuates, which affects the user experience. UTILITY MODEL CONTENTS

[0005] The utility model embodiment proposes a heat exchange type electric water heater, which at least solves one of the problems mentioned in the background art.

[0006] The utility model embodiment proposes a heat exchange type electric water heater, which comprises a heat preservation tank, a heat exchanger and a circulating pump; the heat exchanger is arranged outside the heat preservation tank; the heat exchanger comprises a heat exchange medium flow channel and a water flow channel, the heat exchange medium flow channel is connected with the heat preservation tank through a circulating pipeline, and the circulating pump is arranged on the circulating pipeline; the water flow channel is used to be connected with a water source inlet and a hot water outlet.

[0007] Further technical solutions are that the heat exchange type electric water heater further comprises a first heater, the inlet of the water flow channel is connected with the water source inlet through a first pipeline, and the first heater is arranged on the first pipeline.

[0008] Further technical solutions are that the heat exchange type electric water heater further comprises a water mixing valve, and the water mixing valve is connected with the outlet of the water flow channel, the water source inlet and the hot water outlet.

[0009] Further, the heat exchange type electric water heater further comprises a controller, and the controller is connected with the first heater.

[0010] Further, the heat exchange type electric water heater further comprises a water flow sensor, the water flow sensor is arranged at the water source inlet, and the water flow sensor is connected with the controller.

[0011] Further, the circulating pipeline comprises a second pipeline and a third pipeline, the inlet of the heat exchange medium flow channel is connected with the heat preservation box through the second pipeline, and the outlet of the heat exchange medium flow channel is connected with the heat preservation box through the third pipeline.

[0012] Further, the circulating pump is arranged on the second pipeline or the third pipeline.

[0013] Further, the heat exchange type electric water heater further comprises a second heater, the second heater is arranged in the heat preservation box, and the controller is connected with the second heater.

[0014] Further, the heat exchange type electric water heater further comprises a liquid supplementing pump, the liquid supplementing pump is connected with the heat preservation box, and the controller is connected with the liquid supplementing pump.

[0015] Further, the heat exchange type electric water heater further comprises a temperature sensor and a liquid level sensor, the temperature sensor and the liquid level sensor are arranged in the heat preservation box, and the temperature sensor and the liquid level sensor are connected with the controller.

[0016] Compared with the prior art, the technical effects that can be achieved by the heat exchange type electric water heater include:

[0017] The heat exchange type electric water heater comprises a heat preservation box, a heat exchanger and a circulating pump, the heat exchanger is arranged outside the heat preservation box, the heat exchanger comprises a heat exchange medium flow channel and a water flow channel, the heat exchange medium flow channel is connected with the heat preservation box through a circulating pipeline, the circulating pump is arranged on the circulating pipeline, and the water flow channel is connected with a water source inlet and a hot water outlet.

[0018] Further, the first heater is arranged at the water source inlet of the heat exchanger, water temperature fluctuation caused by voltage fluctuation can be eliminated, the water temperature for bathing is stable, and user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings incorporated herein and constituting a part of the specification illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, simple descriptions will be given to the drawings needed in the embodiments or prior art descriptions below. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0021] One or more embodiments are exemplarily illustrated by the pictures in the drawings corresponding to the embodiments, and these exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. The drawings in the drawings do not constitute a proportional limitation.

[0022] Fig. 1 A structure schematic diagram of a heat exchange type electric water heater is provided for the embodiments of the present application.

[0023] Fig. 2 A control principle diagram of a heat exchange type electric water heater is provided for the embodiments of the present application.

[0024] Reference signs

[0025] The controller 100, the heat preservation box 10, the heat exchanger 20, the circulating pump 30, the water source inlet 40, the hot water outlet 50, the first heater 60, the water mixing valve 70, the first pipeline 80, the water flow sensor 90, the circulating pipeline 11, the second pipeline 111, the third pipeline 112, the second heater 12, the liquid supplement pump 13, the temperature sensor 14, and the liquid level sensor 15. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the embodiments to be described below only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the protection scope of the present application.

[0027] It should be understood that, when used in the specification and the appended claims, the terms "comprise" and "include" indicate the existence of the described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or sets thereof.

[0028] It should also be understood that the terms used in the description of the present application are merely for the purpose of describing particular embodiments and are not intended to limit the present application. As used in the description of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0029] Referring to Figs. 1-2 The present application provides a heat exchange type electric water heater, which comprises a heat preservation box 10, a heat exchanger 20 and a circulating pump 30.

[0030] The heat preservation box 10 is used for storing heat exchange medium, and can be open type or pressure type. The heat exchange medium in the heat preservation box 10 can be water or antifreeze liquid.

[0031] The heat exchanger 20 is used for heat exchange between the heat exchange medium and water, and can be a plate type or a tube type heat exchanger.

[0032] The circulating pump 30 is used for driving the heat exchange medium to circulate and flow, so as to perform heat exchange.

[0033] The heat exchanger 20 is arranged outside the heat preservation box 10, and the heat exchanger 20 and the heat preservation box 10 are independently arranged, i.e. the heat exchanger 20 is independently arranged outside the heat preservation box 10.

[0034] The heat exchanger 20 comprises a heat exchange medium flow channel and a water flow channel. Understandably, the heat exchange medium flows in the heat exchange medium flow channel, and the water flows in the water flow channel, so that the water and the heat exchange medium realize heat exchange in the heat exchanger 20.

[0035] The heat exchange medium flow channel is connected with the heat preservation box 10 through a circulating pipeline 11, and the circulating pump 30 is arranged on the circulating pipeline 11. The circulating pump 30 is used for making the heat exchange medium circulate and flow, so as to improve the heat exchange effect. The water flow channel is used for being connected with a water source inlet 40 and a hot water outlet 50. The water source inlet 40 can be an inlet of tap water. After the tap water flows through the water flow channel in the heat exchanger 20, the tap water exchanges heat with the heat exchange medium, becomes bath hot water, flows out from the hot water outlet 50, and is used by a user.

[0036] The utility model discloses a heat exchange type electric water heater, which comprises a heat preservation box 10, a heat exchanger 20 and a circulating pump 30, wherein the heat exchanger 20 is arranged on the outer side of the heat preservation box 10; the heat exchanger 20 comprises a heat exchange medium flow channel and a water flow channel, the heat exchange medium flow channel is connected with the heat preservation box 10 through a circulating pipeline 11, and the circulating pump 30 is arranged on the circulating pipeline 11; the water flow channel is used for being connected with a water source inlet 40 and a hot water outlet 50.

[0037] Further, the heat exchange type electric water heater further comprises a first heater 60, the inlet of the water flow channel is connected with the water source inlet 40 through a first pipeline 80, and the first heater 60 is arranged on the first pipeline 80.

[0038] The first heater 60 is arranged on the first pipeline 80, so that the first heater 60 can supplementally heat the bathing water before the bathing water enters the heat exchanger 20, thereby ensuring that the water temperature can meet the user's demand.

[0039] The first heater 60 can be a quick-heating heater.

[0040] During the heating process of the bathing water, voltage fluctuation can cause the temperature fluctuation of the hot water from the first heater 60 (i.e. the quick-heating heater). In the case that the heat exchange area of the heat exchanger 20 is sufficient, after heat exchange by the heat exchanger 20, the temperature of the bathing water will be close to the temperature of the heat exchange medium, thereby eliminating the temperature fluctuation caused by voltage fluctuation, to ensure the stability of the temperature of the hot water and the cold water entering the mixing valve 70, so as to make the temperature of the bathing hot water outlet constant and improve the user's experience.

[0041] Further, the heat exchange type electric water heater further comprises a mixing valve 70, the mixing valve 70 is used for adjusting the temperature of the bathing hot water, and the mixing valve 70 is connected with the outlet of the water flow channel, the water source inlet 40 and the hot water outlet 50. It can be understood that the mixing valve 70 is connected with the outlet of the water flow channel, the water source inlet 40 and the hot water outlet 50 through pipelines respectively. The mixing valve 70 comprises two inlets and one outlet, the two inlets of the mixing valve 70 are connected with the outlet of the water flow channel and the water source inlet 40 respectively, and the outlet of the mixing valve 70 is connected with the hot water outlet 50.

[0042] Further, the heat exchange type electric water heater further comprises a controller 100, and the controller 100 is connected with the first heater 60. Specifically, the controller 100 controls the working state of the first heater 60 through a relay.

[0043] Furthermore, the heat exchange electric water heater also includes a water flow sensor 90, which is located at the water source inlet 40 and is connected to the controller 100.

[0044] The water flow sensor 90 is used to detect whether water is flowing into the water source inlet 40. When the controller 100 receives a detection signal from the water flow sensor 90, it indicates that water is flowing into the water source inlet 40, and at this time, it controls the first heater 60 to operate. When the controller 100 does not receive a detection signal from the water flow sensor 90, it indicates that no water is flowing into the water source inlet 40, and at this time, it controls the first heater 60 to stop operating.

[0045] Furthermore, the circulation pipe 11 includes a second pipe 111 and a third pipe 112. The inlet of the heat exchange medium flow channel is connected to the insulation box 10 through the second pipe 111, and the outlet of the heat exchange medium flow channel is connected to the insulation box 10 through the third pipe 112.

[0046] In this invention, the circulating pump 30 is installed on the second pipe 111 or the third pipe 112. For example, in this embodiment, the circulating pump 30 is installed on the third pipe 112. The circulating pump 30 is used to circulate the heat exchange medium, thereby ensuring a good heat exchange effect.

[0047] Furthermore, the heat exchange electric water heater also includes a second heater 12, which is disposed inside the insulation box 10, and the controller 100 is connected to the second heater 12. The controller 100 is used to control the operating state of the second heater 12. The second heater 12 is used to heat the heat exchange medium inside the insulation box 10. The second heater 12 may specifically be a heat storage heater. To ensure a uniform temperature of the heat exchange medium inside the insulation box 10, the second heater 12 is located at the bottom of the insulation box.

[0048] In this invention, to ensure the safety of household electricity use, the first heater 60 and the second heater 12 do not operate simultaneously.

[0049] Furthermore, the heat exchange electric water heater also includes a replenishment pump 13, which is connected to the insulation tank 10, and the controller 100 is connected to the replenishment pump 13. The controller 100 is used to control the operating status of the replenishment pump 13. The replenishment pump 13 is used to replenish the heat exchange medium in the insulation tank 10.

[0050] Furthermore, the heat exchange electric water heater also includes a temperature sensor 14 and a liquid level sensor 15, which are located inside the insulation box 10 and are connected to the controller 100.

[0051] The temperature sensor 14 is used to detect the temperature of the heat exchange medium in the heat preservation box 10. The controller 100 receives the temperature information detected by the temperature sensor 14, and controls the second heater 12 to work when the temperature of the heat exchange medium in the heat preservation box 10 is lower than a preset first temperature threshold, and controls the second heater 12 to stop working when the temperature of the heat exchange medium in the heat preservation box 10 is higher than a preset second temperature threshold. The first temperature threshold is greater than the second temperature threshold, and the first temperature threshold and the second temperature threshold can be set by those skilled in the art, and the utility model is not specifically limited.

[0052] The liquid level sensor 15 is used to detect the liquid level of the heat exchange medium in the heat preservation box 10. The controller 100 receives the liquid level information detected by the liquid level sensor 15, and controls the liquid supplementing pump 13 to work when the liquid level of the heat exchange medium in the heat preservation box 10 is lower than a preset first liquid level threshold, so that the liquid supplementing pump 13 transports the heat exchange medium prepared in advance into the heat preservation box 10, thereby realizing the supplement of the heat exchange medium. The controller 100 controls the liquid supplementing pump 13 to stop working when the liquid level of the heat exchange medium in the heat preservation box 10 is higher than a preset second liquid level threshold. The first liquid level threshold is greater than the second liquid level threshold, and the first liquid level threshold and the second liquid level threshold can be set by those skilled in the art, and the utility model is not specifically limited.

[0053] Working principle:

[0054] When the user uses hot water, the circulating pump 30 starts, the heat exchange medium is heated after heat exchange with the preheated tap water in the heat exchanger 20, and then enters the heat preservation box 10, so as to circulate; part of the tap water enters the mixing valve 70, and the other part enters the instant heater to be heated and warmed, and then enters the heat exchanger 20 to be heat exchanged with the heat exchange medium to be heated again, and then enters the mixing valve 70 to be mixed with the tap water without heating, so as to obtain constant temperature water for the user to use.

[0055] Technical effect:

[0056] 1. The heat exchanger 20 is arranged on the circulating pipeline 11 outside the heat preservation box 10, is an independent component, is convenient to install and maintain, and if leakage occurs, it is easy to find, thereby avoiding the mixing of bathing water and heat exchange medium and causing the pollution of bathing water.

[0057] 2. The first heater 60 is arranged at the water source inlet 40 of the bathing tap water of the heat exchanger 20, can eliminate the water temperature fluctuation caused by voltage fluctuation, can stabilize the bathing outlet water temperature, and can improve the user experience.

[0058] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0059] In the description of the utility model, it is understood that the directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are the directions or positional relationships shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0060] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0061] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0062] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0063] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0064] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, these modifications and variations of the present application are intended to be included within the scope of the claims of the present application and equivalents thereof. Therefore, the present application is intended to include these modifications and variations.

[0065] The above is a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A heat exchange type electric water heater, characterized by comprising: The heat preservation box, the heat exchanger and the circulating pump; the heat exchanger is located outside the heat preservation box; the heat exchanger comprises a heat exchange medium flow channel and a water flow channel, the heat exchange medium flow channel is connected with the heat preservation box through a circulating pipeline, and the circulating pump is arranged on the circulating pipeline; the water flow channel is used for being connected with a water source inlet and a hot water outlet.

2. The heat exchange electric water heater according to claim 1, wherein The heat exchanger type electric water heater further comprises a first heater, the inlet of the water flow channel is connected with the water source inlet through a first pipeline, and the first heater is arranged on the first pipeline.

3. The heat exchange electric water heater according to claim 2, wherein The heat exchanger type electric water heater further comprises a water mixing valve, the water mixing valve is connected with the outlet of the water flow channel, the water source inlet and the hot water outlet.

4. The heat exchange electric water heater according to claim 2, wherein The heat exchanger type electric water heater further comprises a controller, and the controller is connected with the first heater.

5. The heat exchange electric water heater according to claim 4, wherein The heat exchanger type electric water heater further comprises a water flow sensor, the water flow sensor is arranged on the water source inlet, and the water flow sensor is connected with the controller.

6. The heat exchange electric water heater according to claim 1, wherein The circulating pipeline comprises a second pipeline and a third pipeline, the inlet of the heat exchange medium flow channel is connected with the heat preservation box through the second pipeline, and the outlet of the heat exchange medium flow channel is connected with the heat preservation box through the third pipeline.

7. The heat exchange electric water heater according to claim 6, wherein The circulating pump is arranged on the second pipeline or the third pipeline.

8. The heat exchange electric water heater according to claim 5, wherein The heat exchanger type electric water heater further comprises a second heater, the second heater is arranged in the heat preservation box, and the controller is connected with the second heater.

9. The heat exchange electric water heater according to claim 8, wherein The heat exchanger type electric water heater further comprises a liquid supplementing pump, the liquid supplementing pump is connected with the heat preservation box, and the controller is connected with the liquid supplementing pump.

10. The heat exchange electric water heater according to claim 9, wherein The heat exchanger type electric water heater further comprises a temperature sensor and a liquid level sensor, the temperature sensor and the liquid level sensor are arranged in the heat preservation box, and the temperature sensor and the liquid level sensor are connected with the controller.

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