CN211011892U - Heat exchange device and gas water heater - Google Patents
Heat exchange device and gas water heater Download PDFInfo
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- CN211011892U CN211011892U CN201921668053.5U CN201921668053U CN211011892U CN 211011892 U CN211011892 U CN 211011892U CN 201921668053 U CN201921668053 U CN 201921668053U CN 211011892 U CN211011892 U CN 211011892U
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Abstract
The utility model discloses a heat transfer device and gas heater, wherein, heat transfer device includes the heat exchanger, the outlet pipe, bypass pipe and solenoid valve, first heat transfer pipeline and second heat transfer pipeline have on the heat exchanger, the entry end of outlet pipe is linked together with the exit end of second heat transfer pipeline, the exit end and the outlet pipe of bypass pipe are linked together, the last water inlet that has of solenoid valve, first delivery port and second delivery port, the water inlet communicates with the exit end of first heat transfer pipeline, first delivery port is linked together with the entry end of second heat transfer pipeline, the second delivery port is linked together with the entry end of bypass pipe. The electromagnetic valve can control the on-off between the water inlet and the second water outlet so as to control the flow direction of water, so that the gas water heater can obtain lower minimum outlet water temperature, and the shower experience of a user is optimized; the temperature difference between water and flue gas can be reduced, condensate water is avoided, and the service life of the combustor is prolonged.
Description
Technical Field
The utility model relates to a water heating equipment, in particular to heat transfer device and gas heater.
Background
The existing gas water heater usually has the problem of overhigh water outlet temperature in summer, and the reason is mainly that the minimum heat load is overlarge, and the water inlet temperature is overhigh, so that the gas water heater has higher minimum water outlet temperature. The heat load is the amount of heat released per unit time when the fuel is burned. To solve this problem, the prior art generally adopts a method of reducing the minimum heat load, and a specific proposal is to reduce the number of burners involved in the combustion operation.
However, if the number of the burners participating in the combustion work is too small, the heat generated by the combustion is less, the temperature of the water in the heat exchanger is lower, the temperature difference between the water and the flue gas is very large, condensed water can be separated out when the flue gas meets the low-temperature part of the heat exchanger, the condensed water drops on the flame and the burners, the normal combustion of the fuel gas is influenced, the emission of harmful components such as carbon monoxide is increased, and the service life of the burners is shortened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide heat transfer device, can make gas heater have lower minimum leaving water temperature to avoid producing the comdenstion water.
The utility model discloses still provide the gas heater who has above-mentioned heat transfer device.
According to the utility model discloses an aspect provides heat transfer device, it includes
The heat exchanger is provided with a first heat exchange pipeline and a second heat exchange pipeline;
the inlet end of the water outlet pipe is communicated with the outlet end of the second heat exchange pipeline;
the outlet end of the bypass pipe is communicated with the water outlet pipe;
the electromagnetic valve is provided with a water inlet, a first water outlet and a second water outlet, the water inlet is communicated with the outlet end of the first heat exchange pipeline, the first water outlet is communicated with the inlet end of the second heat exchange pipeline, the second water outlet is communicated with the inlet end of the bypass pipe, and the electromagnetic valve can control the on-off between the water inlet and the second water outlet.
The scheme at least has the following technical effects: the electromagnetic valve can control the flow direction of water, so that the gas water heater can obtain lower minimum outlet water temperature, and the shower experience of a user is optimized; the water temperature in the second heat exchange pipeline can be improved, the condensate water generated due to overlarge temperature difference is avoided, the service life of the combustor is prolonged, and the emission of harmful gas is reduced.
According to the utility model discloses the first aspect heat transfer device, on the solenoid valve the water inlet with first delivery port is always on.
According to the utility model discloses first aspect heat transfer device, first heat transfer pipeline's length is less than second heat transfer pipeline's length.
According to the utility model discloses the first aspect heat transfer device, the second heat transfer pipeline includes the heat transfer tube coupling more than two and communicate in proper order.
According to the utility model discloses first aspect heat transfer device, the inner chamber diameter of bypass pipe is less than the inner chamber diameter of second heat transfer pipeline.
According to the utility model discloses heat transfer device of first aspect still includes the hollow main casing body, the heat exchanger is located the top of the main casing body.
According to the utility model discloses first aspect heat transfer device, the inner chamber of the main casing body includes the burning chamber and is located the heat transfer chamber of burning chamber top, the heat exchanger is located the heat transfer intracavity.
According to the utility model discloses first aspect heat transfer device, the width in burning chamber is greater than the width in heat transfer chamber.
According to the utility model discloses the first aspect heat transfer device, the inside wall in heat transfer chamber with the inside wall in burning chamber is connected through inclined plane or cambered surface.
According to a second aspect of the present invention, there is provided a gas water heater comprising a heat exchange device as described above.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples;
FIG. 1 is a structural diagram of an embodiment of a heat exchange device of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the heat exchange device of the present invention;
FIG. 3 is a structural diagram of a heat exchanger in an embodiment of the heat exchange apparatus of the present invention;
fig. 4 is a cross-sectional view of the main housing in an embodiment of the heat exchange device of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.
In the description of the present invention, the terms greater than, less than, exceeding, etc. are understood to exclude the number, and the terms above, below, inside, etc. are understood to include the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 3, a heat exchange device according to an embodiment of the present invention includes a heat exchanger 10, a water outlet pipe 20, a bypass pipe 30, a solenoid valve 40, a main housing 50, and a water inlet pipe 60. The heat exchanger 10 is provided with a first heat exchange pipeline 11 and a second heat exchange pipeline 12, the outlet end of the water inlet pipe 60 is communicated with the inlet end of the first heat exchange pipeline 11, the inlet end of the water outlet pipe 20 is communicated with the outlet end of the second heat exchange pipeline 12, and the outlet end of the bypass pipe 30 is communicated with the water outlet pipe 20. The electromagnetic valve 40 has a water inlet, a first water outlet and a second water outlet, the water inlet is communicated with the outlet end of the first heat exchange pipe 11, the first water outlet is communicated with the inlet end of the second heat exchange pipe 12, and the second water outlet is communicated with the inlet end of the bypass pipe 30. The water flowing in through the water inlet can flow out from the first water outlet and the second water outlet, and the electromagnetic valve 40 can control the on-off between the water inlet and the second water outlet.
The gas water heater is provided with more than two burners, and a control system of the gas water heater can control the burners to simultaneously burn and work and can also enable only one part of the burners to burn and work. When people want to reduce the outlet water temperature of the gas water heater, the gas water heater can be controlled to reduce the number of the burners participating in the combustion work.
Referring to fig. 2, the water inlet of the electromagnetic valve 40 and the first water outlet are normally opened, that is, water flows into the second heat exchange pipe 12 all the time when the gas water heater is in operation. One mode of operation of a gas water heater is as follows: when the number of the burners participating in the combustion work is not the minimum, the electromagnetic valve 40 cuts off the space between the water inlet and the second water outlet, all the water flowing out of the first heat exchange pipeline 11 flows into the second heat exchange pipeline 12 through the electromagnetic valve 40, all the water can be heated in the first heat exchange pipeline 11 and the second heat exchange pipeline 12, and the temperature of the water flowing out of the water outlet pipe 20 is higher. When the number of burners participating in combustion work is minimum and the heat load is minimum, the water inlet and the second water outlet can be communicated through the electromagnetic valve 40, one part of water flowing out of the first heat exchange pipeline 11 flows into the second heat exchange pipeline 12 through the electromagnetic valve 40, the other part of water flows into the bypass pipe 30 through the electromagnetic valve 40, and as the amount of water flowing through the second heat exchange pipeline 12 is reduced, the flow rate is reduced, the heat exchange time is prolonged, the water temperature is increased, and the temperature difference between water and flue gas is reduced, the generation of condensed water is reduced; on the other hand, as the temperature of the water increases, the temperature difference between the water and the flue gas decreases, and eventually the total heat absorbed from the flue gas decreases, so that medium-temperature water flows out of the second heat exchange pipe 12. The medium temperature water flowing out of the second heat exchange pipeline 12 and the low temperature water flowing out of the bypass pipe 30 are mixed in the water outlet pipe 20, so that the outlet water temperature of the gas water heater can be lower. In order to realize the working process, the judgment of the minimum heat load can be realized by judging whether the current provided for the gas proportional valve by the control system of the gas water heater is the minimum or not, or a position switch is additionally arranged on the gas regulating valve, and whether the gas water heater works in the minimum heat load state or not can be judged by on-off signals of the switch.
Through foretell structure, can make gas heater have lower minimum leaving water temperature, optimize the shower experience of user in summer. Meanwhile, the temperature difference between water and flue gas can be reduced, condensate water is avoided, the service life of the combustor is prolonged, and the emission of harmful gas is reduced. In addition, the structure is simple and easy to produce.
Due to the existence of thermal inertia, when the gas water heater is used for water closing and then boiling, the phenomenon that the water temperature is gradually increased after being increased is caused by the existence of superheated water in the heat exchanger 10 and the time required for heat absorption and temperature increase of water generally exists, and the fluctuation range of the outlet water temperature is large. After the water is boiled again, the gas water heater can flow out water with higher temperature for a short time. For this purpose, the length of the first heat exchange pipe 11 is designed to be smaller than the length of the second heat exchange pipe 12, and a specific operation mode of the gas water heater is as follows: superheated water exists at the rear end of the second heat exchange pipeline 12 before water is turned off halfway and boiled again; after the water is boiled again, the water starts to flow, the electromagnetic valve 40 controls the water inlet to be communicated with the second water outlet, and the combustor starts to perform combustion work; because the first heat exchange pipeline 11 is shorter, the temperature of the water flowing out of the first heat exchange pipeline is lower due to less heat absorption, and the warm water flows into the bypass pipe 30 and then is mixed with the superheated water flowing out of the second heat exchange pipeline 12, so that the outlet water temperature of the gas water heater is reduced; when the superheated water in the second heat exchange pipe 12 is exhausted, the electromagnetic valve 40 cuts off the space between the water inlet and the second water outlet. In order to realize the working process, a flow sensor can be arranged on the second heat exchange pipeline 12, and a time sequence control circuit is arranged in a control system of the gas water heater, so that the action time of the electromagnetic valve 40 can be accurately controlled, and the electromagnetic valve 40 can be ensured to act in time after superheated water in the second heat exchange pipeline 12 is emptied. Of course, the flow sensor may be disposed on the water outlet pipe 20 or the water inlet pipe 60.
As described above, since the water flowing out of the first heat exchange pipe 11 can flow to the bypass pipe 30 via the solenoid valve 40, the hot water is mixed with the superheated water flowing out of the second heat exchange pipe 12, and the outlet water temperature of the gas water heater can be reduced.
Of course, the structure of the solenoid valve 40 is not limited to that shown in fig. 2, and other types of structures may be adopted for the solenoid valve 40 in practical use.
The second heat exchange pipe 12 includes more than two heat exchange pipe joints 121 which are sequentially communicated. For example, referring to fig. 2 and 3, the second heat exchange tube 12 includes four heat exchange tube segments 121 that are sequentially connected to increase the flow time of water in the heat exchanger 10, and also to facilitate the arrangement of a longer second heat exchange tube 12.
Of course, the number of the heat exchange tube segments 121 of the second heat exchange tube 12 may also be set to two, three or more than five.
The diameter of the inner cavity of the bypass pipe 30 is smaller than that of the inner cavity of the second heat exchange pipe 12, so as to prevent too little water from entering the second heat exchange pipe 12 due to too small resistance of the bypass pipe 30, and thus the temperature of the water in the second heat exchange pipe 12 is too high.
Referring to fig. 1 and 4, the main housing 50 has a hollow structure, and the heat exchanger 10 is located at the top of the main housing 50. Specifically, the inner cavity of the main housing 50 includes a combustion chamber 51 and a heat exchange chamber 52 located above the combustion chamber 51, the heat exchanger 10 is located in the heat exchange chamber 52, and the width of the combustion chamber 51 is greater than the width of the heat exchange chamber 52. When the burner is in combustion operation, flame is located in the combustion chamber 51, and flue gas generated by combustion flows upwards to the heat exchange chamber 52.
The inner side wall of the heat exchange cavity 52 is connected with the inner side wall of the combustion cavity 51 through an inclined plane, and the flowing and gathering of the flue gas are facilitated through the structure.
In some embodiments, the inner side wall of the heat exchange cavity 52 and the inner side wall of the combustion cavity 51 may also be connected by an arc surface.
The heat exchanger 10 is provided with a fin 13, and the first heat exchange pipe 11 and the second heat exchange pipe 12 penetrate through the fin 13. In some embodiments, the first heat exchange tubes 11 may be provided as a bellows structure, with the fins 13 being located at the bulges of the surface of the first heat exchange tubes 11.
The utility model discloses still provide gas heater, it includes casing, combustor and foretell heat transfer device (casing and combustor are not shown in the figure). Wherein, the burner is positioned at the bottom of the main shell 50, and the heat exchange device is positioned in the shell.
Through the structure, the electromagnetic valve 40 can control the flow direction of water, so that the gas water heater can obtain the lower lowest outlet water temperature, and the shower experience of a user in summer is optimized. Meanwhile, the temperature difference between water and flue gas can be reduced, the phenomenon that the flue gas temperature is too low to generate condensed water is avoided, the service life of the combustor is prolonged, and the emission of harmful gas is reduced.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. The heat exchange device is characterized by comprising
The heat exchanger is provided with a first heat exchange pipeline and a second heat exchange pipeline;
the inlet end of the water outlet pipe is communicated with the outlet end of the second heat exchange pipeline;
the outlet end of the bypass pipe is communicated with the water outlet pipe;
the electromagnetic valve is provided with a water inlet, a first water outlet and a second water outlet, the water inlet is communicated with the outlet end of the first heat exchange pipeline, the first water outlet is communicated with the inlet end of the second heat exchange pipeline, the second water outlet is communicated with the inlet end of the bypass pipe, and the electromagnetic valve can control the on-off between the water inlet and the second water outlet.
2. The heat exchange device of claim 1, wherein the water inlet and the first water outlet on the solenoid valve are normally open.
3. The heat exchange device of claim 1 or 2, wherein the length of the first heat exchange tube is less than the length of the second heat exchange tube.
4. The heat exchange device of claim 1, wherein the second heat exchange tube comprises more than two heat exchange tube segments which are communicated in sequence.
5. The heat exchange device of claim 1, wherein the bypass tube has an inner cavity diameter that is smaller than an inner cavity diameter of the second heat exchange tube.
6. The heat exchange device of claim 1, further comprising a hollow main housing, the heat exchanger being located at a top of the main housing.
7. The heat exchange device of claim 6, wherein the inner cavity of the main housing comprises a combustion chamber and a heat exchange chamber located above the combustion chamber, and the heat exchanger is located in the heat exchange chamber.
8. The heat exchange device of claim 7, wherein the width of the combustion chamber is greater than the width of the heat exchange chamber.
9. The heat exchange device of claim 8, wherein the inner side wall of the heat exchange chamber is connected with the inner side wall of the combustion chamber through a slope or an arc surface.
10. Gas water heater characterized in that it comprises a heat exchange device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921668053.5U CN211011892U (en) | 2019-09-30 | 2019-09-30 | Heat exchange device and gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921668053.5U CN211011892U (en) | 2019-09-30 | 2019-09-30 | Heat exchange device and gas water heater |
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| CN211011892U true CN211011892U (en) | 2020-07-14 |
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| CN201921668053.5U Active CN211011892U (en) | 2019-09-30 | 2019-09-30 | Heat exchange device and gas water heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608532A (en) * | 2019-09-30 | 2019-12-24 | 中山百得厨卫有限公司 | Heat exchange device and gas water heater |
| CN112361585A (en) * | 2020-11-03 | 2021-02-12 | 宁波方太厨具有限公司 | Water heater and control method thereof |
-
2019
- 2019-09-30 CN CN201921668053.5U patent/CN211011892U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608532A (en) * | 2019-09-30 | 2019-12-24 | 中山百得厨卫有限公司 | Heat exchange device and gas water heater |
| CN110608532B (en) * | 2019-09-30 | 2024-06-14 | 中山百得厨卫有限公司 | Heat exchange device and gas water heater |
| CN112361585A (en) * | 2020-11-03 | 2021-02-12 | 宁波方太厨具有限公司 | Water heater and control method thereof |
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