Heat exchange device

Abstract

The heat exchange device comprises a heat exchange water tank and a heat exchange unit, the heat exchange water tank is provided with a heat exchange cavity used for installing the heat exchange unit, the heat exchange unit comprises an outer heat exchange pipe and an inner heat exchange pipe, the inner heat exchange pipe is embedded in the outer heat exchange pipe, a first heat exchange channel is formed in an inner cavity of the inner heat exchange pipe, and a second heat exchange channel is formed in the inner cavity of the inner heat exchange pipe. A second heat exchange channel is defined by the outer wall of the inner heat exchange pipe and the inner wall of the outer heat exchange pipe, and a third heat exchange channel is defined by the outer wall of the outer heat exchange pipe and the inner wall of the heat exchange cavity. According to the heat exchange device, the first heat exchange channel and the second heat exchange channel can exchange heat to form a set of heat exchange system, the second heat exchange channel and the third heat exchange channel can exchange heat to form another set of heat exchange system, the three heat exchange channels form two sets of heat exchange systems, and the functions of the heat exchange device are expanded; the method can be better applied to equipment such as a water purifier, equipment functions are enriched, and the use experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluid heat exchange, in particular to a heat exchange device. BACKGROUND

[0002] The heat exchange device can transfer heat from hot fluid to cold fluid, so as to cool the hot fluid and heat the cold fluid. The heat exchange device is applied in most technical fields and equipment, including a water purifier with heat exchange function. The traditional water purifier with instant heater can heat the filtered water to a required temperature, such as 100℃, 90℃, 80℃, 45℃, etc., and then directly discharge it. However, this technology has some disadvantages: the water heated by the instant heater to a temperature of 45℃ or the like does not reach the boiling state, so some bacteria and microorganisms in the water cannot be eliminated, and the water quality is relatively hard; although the instant heater can boil the water, if the user wants to drink cold boiled water, the user needs to wait for the boiled water to cool down naturally, which takes too long, and the temperature of the obtained cold boiled water cannot be controlled, which affects the user experience; since the instant heater needs to heat the water to a predetermined temperature in a short time, the amount of water that can be heated in a short time is limited, and a large amount of water cannot be heated in a short time, resulting in a small amount of water supply.

[0003] There are water purifiers with heat exchange function on the market, which are internally provided with a heat exchange device. The heat exchange device can exchange heat between boiled water heated to boiling and normal temperature water, so as to cool the boiled water to low-temperature cold boiled water at about 45℃ or medium-high-temperature cold boiled water at 50℃-90℃. The cold boiled water has undergone the sterilization and disinfection process of boiling by the instant heater, and the water quality is soft, which is more healthy and suitable for drinking. Therefore, the water purifier with heat exchange device is more and more loved by consumers. However, the heat exchange device applied in the water purifier in the prior art is provided with two heat exchange water paths. For example, one of the heat exchange water paths is connected to normal temperature water, and the other is connected to boiled water boiled by the instant heater, so that the boiled water exchanges heat with the normal temperature water, and the boiled water is quickly cooled to form cold boiled water. For another example, one of the heat exchange water paths is connected to high-temperature energy storage medium, and the other is connected to normal temperature water, so that the normal temperature water exchanges heat with the high-temperature energy storage medium, and the normal temperature water is preheated and heated before entering the instant heater, so as to improve the heating efficiency and increase the water supply. However, this heat exchange device can only form a heat exchange system through the two heat exchange water paths, and can only realize the preparation of cold boiled water or the preheating of normal temperature water. The heat exchange function is single, and cannot meet the increasing use demand of people. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a heat exchange device to improve or solve the technical problem of single heat exchange function of the existing heat exchange device.

[0005] The technical scheme adopted by the present application is as follows:

[0006] The heat exchange device comprises a heat exchange water tank and a heat exchange unit, the heat exchange water tank is provided with a heat exchange cavity for mounting the heat exchange unit, the heat exchange unit comprises an outer heat exchange pipe and an inner heat exchange pipe, the inner heat exchange pipe is nested in the inner part of the outer heat exchange pipe, the inner cavity of the inner heat exchange pipe forms a first heat exchange channel, the outer wall of the inner heat exchange pipe and the inner wall of the outer heat exchange pipe form a second heat exchange channel, and the outer wall of the outer heat exchange pipe and the inner wall of the heat exchange cavity form a third heat exchange channel.

[0007] The heat exchange device further comprises the following additional technical features.

[0008] The heat exchange water tank comprises a tank body and a tank cover, the tank body is provided with a partition plate and the heat exchange cavities on both sides of the partition plate, the tank cover is used for opening or covering the heat exchange cavities, each of the heat exchange cavities is provided with the heat exchange unit, the first heat exchange channels formed in the heat exchange cavities on both sides are connected in series, the second heat exchange channels formed in the heat exchange cavities on both sides are connected in series, and the third heat exchange channels formed in the heat exchange cavities on both sides are connected in series.

[0009] The heat exchange device comprises a waterway connector, the tank body is provided with first outer insertion through holes penetrating through the heat exchange cavities on both sides, one end of the outer heat exchange pipe and one end of the inner heat exchange pipe are inserted into the waterway connector through the first outer insertion through holes, the waterway connector is provided with first communication channels for connecting the first heat exchange channels on both sides in series and second communication channels for connecting the second heat exchange channels on both sides in series, and the partition plate is provided with a water passing hole for connecting the third heat exchange channels on both sides in series.

[0010] First sealing bodies for sealing the first communication channels are arranged between the inner heat exchange pipes and the waterway connector, second sealing bodies for sealing the second communication channels are arranged between the outer heat exchange pipes and the waterway connector, and third sealing bodies for sealing the first outer insertion through holes are arranged between the outer heat exchange pipes and the tank body.

[0011] The heat exchange device comprises an inlet and outlet water connector, the tank body is provided with second outer insertion through holes penetrating through the heat exchange cavities on both sides, one end of the outer heat exchange pipe and one end of the inner heat exchange pipe are inserted into the inlet and outlet water connector through the second outer insertion through holes, the inlet and outlet water connector is provided with a first water inlet connected with the first heat exchange channel on one side and a first water outlet connected with the first heat exchange channel on the other side, the inlet and outlet water connector is provided with a second water inlet connected with the second heat exchange channel on one side and a second water outlet connected with the second heat exchange channel on the other side, and the tank body is provided with a third water inlet connected with the third heat exchange channel on one side and a third water outlet connected with the third heat exchange channel on the other side.

[0012] The inner wall of the box body is provided with a plurality of ribs protruding towards the box cover, the plurality of ribs divide the heat exchange cavity into an S-shaped structure, and the outer heat exchange pipe and the inner heat exchange pipe are both curved into an S-shaped structure to adapt to the heat exchange cavity.

[0013] The box cover is detachably connected with the box body, the box cover is provided with a plurality of insertion grooves corresponding to the ribs, the ribs are inserted into the insertion grooves, and a sealing element for sealing the heat exchange cavity is arranged between the box cover and the box body, the sealing element comprises a ring-shaped sealing body and a plurality of sealing partitions arranged in the sealing body, and the sealing partitions are pressed in the insertion grooves by the ribs.

[0014] At least a part of the inner heat exchange pipe is provided with a spiral-shaped turbulence rib protruding outward, and / or at least a part of the outer heat exchange pipe is corrugated.

[0015] A limiting protrusion is arranged in the heat exchange cavity, the limiting protrusion stops the outer heat exchange pipe, and the outer heat exchange pipe is spaced from the inner wall of the heat exchange cavity.

[0016] One end of the heat exchange water tank is provided with a buckle protrusion, and the other end is provided with a buckle groove, so that a plurality of heat exchange water tanks can be connected side by side through the buckle protrusions and the buckle grooves.

[0017] Thanks to the above technical solutions, the application has at least the following technical effects:

[0018] 1. The heat exchange device provided by the application, the inner cavity of the inner heat exchange pipe forms a first heat exchange channel, the outer wall of the inner heat exchange pipe and the inner wall of the outer heat exchange pipe form a second heat exchange channel, and the outer wall of the outer heat exchange pipe and the inner wall of the heat exchange cavity form a third heat exchange channel, the three heat exchange channels form two groups of heat exchange systems, which expand the function of the heat exchange device. Among them, the first heat exchange channel and the second heat exchange channel can exchange heat to form a group of heat exchange systems, and the second heat exchange channel and the third heat exchange channel can exchange heat to form another group of heat exchange systems; when the heat exchange device is applied to a water purifier, one group of heat exchange systems can be used for heat exchange between boiling water and normal temperature water, so that the boiling water can be quickly cooled to form cold boiled water, and the user can quickly obtain cold boiled water, thereby shortening the waiting time; another group of heat exchange systems can be used for preheating of normal temperature water, for example, one heat exchange channel is used for circulating flow of high-temperature energy storage medium, and another heat exchange channel is used for conveying normal temperature water to the instant heating body, so that the high-temperature energy storage medium transfers heat to the normal temperature water to preheat and heat the normal temperature water, and then the normal temperature water is conveyed into the instant heating body for rapid heating to boiling water, thereby greatly shortening the time required for the instant heating body to heat and boil the water, effectively improving the water response speed and water output of the water purifier, not only shortening the waiting time of the user to obtain boiling water, but also helping to save energy.

[0019] 2. As a preferred mode, the box is separated into two heat exchange cavities by a partition plate, and each heat exchange cavity is provided with a group of heat exchange units. The first heat exchange channels of the two groups of heat exchange units are in series communication, the second heat exchange channels are in series communication, and the third heat exchange channels are in series communication, so that the two groups of heat exchange units form a series heat exchange waterway. The fluids in the three heat exchange channels flow from one side of the heat exchange cavity to the other side of the heat exchange cavity, greatly extending the heat exchange path of the first heat exchange channel, the second heat exchange channel and the third heat exchange channel, so that the fluid is fully heat exchanged, and the heat exchange efficiency and heat exchange effect are improved. The heat exchange cavities on both sides of the box are designed in an open manner, which facilitates the installation of the heat exchange units. After installation, the box cover is closed to ensure the sealing.

[0020] 3. As a preferred mode, the waterway connector is provided with a first communication channel for series communication of the first heat exchange channels on both sides, and is provided with a second communication channel for series communication of the second heat exchange channels on both sides. In other words, a single waterway connector simultaneously realizes series communication of the first heat exchange channels on both sides and series communication of the second heat exchange channels on both sides. The structure is simple, the communication structure for realizing communication of the heat exchange channels on both sides is simplified, and the assembly of a single waterway connector with the heat exchange tank is also relatively convenient.

[0021] 4. As a preferred mode, the water inlet and outlet connector is provided with a first water inlet in communication with the first heat exchange channel on one side and a first water outlet in communication with the first heat exchange channel on the other side, and is also provided with a second water inlet in communication with the second heat exchange channel on one side and a second water outlet in communication with the second heat exchange channel on the other side. In other words, a single water inlet and outlet connector simultaneously realizes water inlet and outlet of the first heat exchange channel and water inlet and outlet of the second heat exchange channel, realizes integration of multiple functions, further simplifies the structure of the heat exchange device, helps the heat exchange device to be miniaturized, and when applied to a water purifier, facilitates the water purifier to be more lightweight.

[0022] 5. As a preferred mode, a plurality of partition ribs separate the heat exchange cavities into an S-shaped structure, and the outer heat exchange pipes and the inner heat exchange pipes are bent into an S-shaped structure to adapt to the heat exchange cavities, so that the first heat exchange channel, the second heat exchange channel and the third heat exchange channel all have an S-shaped structure. In the limited space of the heat exchange cavity, the flow path of the fluid participating in heat exchange in the heat exchange cavity, the outer heat exchange pipe and the inner heat exchange pipe is sufficiently extended, thereby improving the heat exchange efficiency and heat exchange effect.

[0023] 6. As a preferred mode, at least part of the area of the inner heat exchange pipe is provided with a spiral-shaped disturbance rib protruding outward. The disturbance rib can not only improve heat conduction, but also make the inner heat exchange pipe in the center position in the outer heat exchange pipe, so that the fluid flow and heat transfer in the second heat exchange channel are more uniform, thereby improving the heat transfer efficiency.

[0024] 7. As a preferred embodiment, a limiting protrusion is provided inside the heat exchange cavity. The limiting protrusion stops the external heat exchange tube, thereby separating the external heat exchange tube from the inner wall of the heat exchange cavity. This ensures that the external heat exchange tube is stably positioned in the center of the water path within the heat exchange cavity, allowing the fluid in the third heat exchange channel to have more sufficient contact with the outer wall of the external heat exchange tube, thus ensuring higher heat exchange efficiency. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is an assembly drawing of the heat exchange device provided in the embodiments of this application;

[0027] Figure 2 An exploded view of the heat exchange device provided in the embodiments of this application;

[0028] Figure 3 A cross-sectional view of the heat exchange device provided in the embodiments of this application. Figure 1 ;

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 A cross-sectional view of the heat exchange device provided in the embodiments of this application. Figure 2 ;

[0031] Figure 6 for Figure 5 Enlarged view at point B in the middle;

[0032] Figure 7 A cross-sectional view of the heat exchange device provided in the embodiments of this application. Figure 3 ;

[0033] Figure 8 This is a schematic diagram of the structure of the hot water exchange tank provided in an embodiment of this application;

[0034] Figure 9 This is a schematic diagram of the structure of the cover of the hot water exchange tank provided in an embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the structure of the sealing element provided in the embodiments of this application;

[0036] Figure 11 This is a schematic diagram of the internal heat exchange tube provided in an embodiment of this application;

[0037] Figure 12 This is a schematic diagram of the structure of the external heat exchanger provided in the embodiments of this application;

[0038] Figure 13 The structure schematic view of two heat exchange devices provided by the embodiment of the application is connected together.

[0039] Parts and reference numeral list:

[0040] 1 heat exchange water tank, 11 tank body, 111 heat exchange cavity, 112 partition plate, 1121 water passing hole, 113 first outer insertion hole, 114 second outer insertion hole, 115 third water inlet, 116 third water outlet, 117 partition rib, 118 limiting convex part, 12 tank cover, 121 insertion slot, 122 buckle convex, 123 buckle groove;

[0041] 2 outer heat exchange pipe;

[0042] 3 inner heat exchange pipe, 31 turbulence rib;

[0043] 41 first heat exchange channel, 42 second heat exchange channel, 43 third heat exchange channel;

[0044] 5 waterway connector, 51 first communication channel, 52 second communication channel;

[0045] 61 first sealing body, 62 second sealing body, 63 third sealing body;

[0046] 7 water inlet and outlet connector, 71 first water inlet, 72 first water outlet, 73 second water inlet, 74 second water outlet;

[0047] 8 sealing element, 81 sealing main body, 82 sealing partition strip. DETAILED DESCRIPTION

[0048] In order to more clearly illustrate the overall concept of the application, the following will be described in detail with reference to the accompanying drawings.

[0049] In the following description, many specific details are set forth in order to provide a thorough understanding of the application, but the application can also be implemented in other ways different from those described herein, therefore, the scope of protection of the application is not limited by the specific embodiments disclosed below.

[0050] In addition, in the description of the application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the application.

[0051] In this application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; 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 those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0052] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms is not necessarily for 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.

[0053] In the embodiments of the present application, a heat exchange device is provided. In order to facilitate the description and understanding, the following content provided by the present application is described on the basis of the structure of the product. Of course, those skilled in the art can understand that the above structure is only a specific example and illustrative description, and cannot constitute a specific limitation on the technical solutions provided by the present application.

[0054] As shown in Figures 1 to 13 The heat exchange device provided by the present application comprises a heat exchange water tank 1 and a heat exchange unit, the heat exchange water tank 1 is provided with a heat exchange cavity 111 for mounting the heat exchange unit, the heat exchange unit comprises an outer heat exchange pipe 2 and an inner heat exchange pipe 3, the inner heat exchange pipe 3 is nested in the inside of the outer heat exchange pipe 2, the inner cavity of the inner heat exchange pipe 3 forms a first heat exchange channel 41, the outer wall of the inner heat exchange pipe 3 and the inner wall of the outer heat exchange pipe 2 form a second heat exchange channel 42, and the outer wall of the outer heat exchange pipe 2 and the inner wall of the heat exchange cavity 111 form a third heat exchange channel 43.

[0055] The heat exchange device of the application, the inner cavity of the inner heat exchange pipe 3 forms the first heat exchange channel 41, the outer wall of the inner heat exchange pipe 3 and the inner wall of the outer heat exchange pipe 2 form the second heat exchange channel 42, the outer wall of the outer heat exchange pipe 2 and the inner wall of the heat exchange cavity 111 form the third heat exchange channel 43, and the three heat exchange channels form two groups of heat exchange systems, which expand the function of the heat exchange device. Among them, the first heat exchange channel 41 and the second heat exchange channel 42 can exchange heat to form a group of heat exchange systems, and the second heat exchange channel 42 and the third heat exchange channel 43 can exchange heat to form another group of heat exchange systems; when the heat exchange device is applied to a water purifier, one group of heat exchange systems can be used for heat exchange between boiling water and normal temperature water, so that the boiling water can be quickly cooled to form cold boiled water, and the user can quickly obtain cold boiled water, and the waiting time is shortened; another group of heat exchange systems can be used for preheating of normal temperature water, for example, one of the heat exchange channels is used for circulating flow of high-temperature energy storage medium, and the other heat exchange channel is used for delivering normal temperature water to the instant heater, and the heat is transferred from the high-temperature energy storage medium to the normal temperature water to preheat and heat the normal temperature water, and then the normal temperature water is delivered into the instant heater for rapid heating to boiling water, which greatly shortens the time required for the instant heater to heat and boil the water, effectively improves the water response speed and water output of the water purifier, not only shortens the waiting time of the user to obtain boiling water, but also helps to save energy. In specific implementation, the second heat exchange channel 42 can be used for delivering normal temperature water from the filter core of the water purifier to the instant heater, the third heat exchange channel 43 is used for circulating flow of high-temperature energy storage medium, and the first heat exchange channel 41 is used for discharging boiling water from the instant heater to the faucet, so that the boiling water exchanges heat with the normal temperature water in the first heat exchange channel 41 and the second heat exchange channel 42, thereby rapidly cooling the boiling water to form cold boiled water, and the water in the second heat exchange channel 42 is preheated and heated, which can shorten the heating time of the water entering the instant heater to boiling water and save energy consumption of the instant heater; when the faucet needs to discharge boiling water, the high-temperature energy storage medium in the third heat exchange channel 43 exchanges heat with the normal temperature water in the second heat exchange channel 42, so that the normal temperature water in the second heat exchange channel 42 is quickly heated and preheated, thereby reducing the time of heating to form boiling water.

[0056] As a preferred embodiment of the application, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 and Figure 8As shown, the heat exchange water tank 1 comprises a tank body 11 and a tank cover 12, the tank body 11 is provided with a partition plate 112 and the heat exchange cavities 111 on both sides of the partition plate 112, the tank cover 12 is used to open or cover the heat exchange cavities 111, each of the heat exchange cavities 111 is installed with the heat exchange unit, the first heat exchange channels 41 formed in the heat exchange cavities 111 on both sides are in series communication, the second heat exchange channels 42 formed in the heat exchange cavities 111 on both sides are in series communication, and the third heat exchange channels 43 formed in the heat exchange cavities 111 on both sides are in series communication. The tank body 11 is separated by the partition plate 112 to form two heat exchange cavities 111, each of the heat exchange cavities 111 is provided with a group of heat exchange units, the first heat exchange channels 41 of the two groups of heat exchange units are in series communication, the second heat exchange channels 42 of the two groups of heat exchange units are in series communication, and the third heat exchange channels 43 of the two groups of heat exchange units are in series communication, so that the two groups of heat exchange units form a series heat exchange water path, the first heat exchange channel 41 formed in one side of the heat exchange cavities 111 is used for water inlet, the first heat exchange channel 41 formed in the other side of the heat exchange cavities 111 is used for water outlet, similarly, the second heat exchange channel 42 formed in one side of the heat exchange cavities 111 is used for water inlet, the second heat exchange channel 42 formed in the other side of the heat exchange cavities 111 is used for water outlet, and similarly, the third heat exchange channel 43 formed in one side of the heat exchange cavities 111 is used for water inlet, the third heat exchange channel 43 formed in the other side of the heat exchange cavities 111 is used for water outlet. The fluids in the three heat exchange channels flow from one side of the heat exchange cavities 111 to the other side of the heat exchange cavities 111, which greatly prolongs the heat exchange paths of the first heat exchange channels 41, the second heat exchange channels 42 and the third heat exchange channels 43, so that the fluids are fully heat exchanged, the heat exchange efficiency and effect are improved, the heat exchange cavities 111 on both sides of the tank body 11 are designed in an open type, which facilitates the installation of the heat exchange units, and after installation, the tank cover 12 is covered to ensure the sealing performance.

[0057] As a preferred embodiment, the heat exchange units on both sides are in series communication in the following manner. Figures 1 to 4As shown, the heat exchange device comprises a waterway connector 5, the box 11 is provided with first outer insertion holes 113 penetrating through the heat exchange cavities 111 on both sides, one end of the outer heat exchange pipes 2 and one end of the inner heat exchange pipes 3 are inserted into the waterway connector 5 through the first outer insertion holes 113 together, the waterway connector 5 is provided with a first communication channel 51 for serially connecting the first heat exchange channels 41 on both sides, and is provided with a second communication channel 52 for serially connecting the second heat exchange channels 42 on both sides, and the partition plate 112 is provided with a water passing hole 1121 for serially connecting the third heat exchange channels 43 on both sides. Specifically, the two first outer insertion holes 113 can be arranged adjacent to each other, one end of the outer heat exchange pipes 2 on both sides respectively penetrates out of the two first outer insertion holes 113 in parallel with each other. Similarly, since the inner heat exchange pipes 3 on both sides are also located in the outer heat exchange pipes 2 in the heat exchange cavities 111, one end of the inner heat exchange pipes 3 on both sides also penetrates out of the two first outer insertion holes 113 in parallel with each other. In order to facilitate the first communication channel 51 to serially connect the first heat exchange channels 41 in the inner heat exchange pipes 3 on both sides, the end of the inner heat exchange pipes 3 on both sides can penetrate out of the end of the outer heat exchange pipes 2 and be inserted into the waterway connector 5 at a deeper position, so that the waterway connector 5 arranges the first communication channel 51 and the second communication channel 52 at intervals to avoid internal waterway disorder. Those skilled in the art can understand that through the above arrangement, the single waterway connector 5 is used to realize the serial connection of the first heat exchange channels 41 on both sides and the serial connection of the second heat exchange channels 42 on both sides, the structure is simple, the serial connection structure of the heat exchange channels on both sides is simplified, and the assembly of the single waterway connector 5 and the heat exchange water tank 1 is also convenient. In the preferred embodiment, the waterway connector 5 and the box 11 can be detachably fixed together by screws to ensure the connection reliability.

[0058] Further, as Figure 4As shown, the inner heat exchange pipe 3 and the waterway connecting head 5 are provided with a first sealing body 61 for sealing the first communication passage 51, the outer heat exchange pipe 2 and the waterway connecting head 5 are provided with a second sealing body 62 for sealing the second communication passage 52, and the outer heat exchange pipe 2 and the box body 11 are provided with a third sealing body 63 for sealing the first outer insertion through hole 113. The first sealing body 61 seals the first communication passage 51, ensuring the sealing effect of the communication between the first heat exchange passages 41 on both sides, and can also separate the first communication passage 51 and the second communication passage 52 through the first sealing body 61 to avoid water leakage between the first communication passage 51 and the second communication passage 52. The second sealing body 62 seals the second communication passage 52, ensuring the sealing effect of the communication between the second heat exchange passages 42 on both sides, and can also avoid water leakage from the second communication passage 52 and the second heat exchange passage 42 to the outside through the gap between the waterway connecting head 5 and the box body 11. The third sealing body 63 seals the first outer insertion through hole 113 to prevent water in the heat exchange cavity 111 from leaking to the outside through the gap between the outer heat exchange pipe 2 and the first outer insertion through hole 113.

[0059] As a preferred embodiment, as shown in Figure 1 , Figure 5 and Figure 6As shown, the heat exchange device comprises an inlet and outlet water connector 7, the box 11 is provided with a second outer insertion hole 114 penetrating through the heat exchange cavities 111 on both sides, so that one end of the outer heat exchange pipe 2 and one end of the inner heat exchange pipe 3 are inserted into the inlet and outlet water connector 7 through the second outer insertion hole 114 together, the inlet and outlet water connector 7 is provided with a first water inlet 71 communicating with the first heat exchange channel 41 on one side and a first water outlet 72 communicating with the first heat exchange channel 41 on the other side; the inlet and outlet water connector 7 is provided with a second water inlet 73 communicating with the second heat exchange channel 42 on one side and a second water outlet 74 communicating with the second heat exchange channel 42 on the other side; the box 11 is provided with a third water inlet 115 communicating with the third heat exchange channel 43 on one side and a third water outlet 116 communicating with the third heat exchange channel 43 on the other side. Specifically, two second outer insertion holes 114 can be arranged at adjacent positions, one end of the outer heat exchange pipes 2 on both sides respectively penetrates out of the two second outer insertion holes 114 in parallel with each other, similarly, since the inner heat exchange pipes 3 on both sides are also located in the outer heat exchange pipes 2 in the heat exchange cavities 111, one end of the inner heat exchange pipes 3 on both sides also penetrates out of the two second outer insertion holes 114 in parallel with each other, and in order to avoid interference between the water inlet and outlet processes of the first heat exchange channel 41 and the water inlet and outlet processes of the second heat exchange channel 42, the end of the inner heat exchange pipe 3 on both sides can be made to penetrate out of the end of the outer heat exchange pipe 2 and be inserted into a deeper position of the inlet and outlet water connector 7, so that the inlet and outlet water connector 7 arranges the first water inlet 71, the first water outlet 72 and the second water inlet 73, the second water outlet 74 in a spaced manner, avoiding the internal waterway disorder. Preferably, the inlet and outlet water connector 7 can also be provided with a sealing body for sealing the water inlet of the first water inlet 71 and the second water inlet 73 into the first heat exchange channel 41 and the second heat exchange channel 42 respectively, and a sealing body for sealing the water outlet of the first heat exchange channel 41 and the second heat exchange channel 42 into the first water outlet 72 and the second water outlet 74 respectively. In this scheme, a single inlet and outlet water connector 7 simultaneously realizes the water inlet and outlet of the first heat exchange channel 41 and the water inlet and outlet of the second heat exchange channel 42, realizes the integration of multiple functions, further simplifies the structure of the heat exchange device, helps the miniaturization of the heat exchange device structure, and when applied to a water purifier, facilitates the light and thin of the water purifier.

[0060] In a preferred embodiment, as Figure 5 and Figure 8As shown, the inner wall of the box body 11 is provided with a plurality of partition ribs 117 protruding towards the box cover 12, the plurality of partition ribs 117 separate the heat exchange cavity 111 into S-shaped structures, and the outer heat exchange pipe 2 and the inner heat exchange pipe 3 are both bent into S-shaped structures to adapt to the heat exchange cavity 111. Specifically, in the scheme that the partition plate 112 is provided with a water passing hole 1121 for serially connecting the two third heat exchange channels 43, the water passing hole 1121 can be arranged at the end of the S-shaped structure of the heat exchange cavity 111, and the other end of the S-shaped structure of the heat exchange cavity 111 on the two sides is respectively provided with a third water inlet 115 and a third water outlet 116, so as to ensure that the two third heat exchange channels 43 have the longest fluid path after being connected in series. The partition ribs 117 separate the heat exchange cavity 111 into S-shaped structures, and the outer heat exchange pipe 2 and the inner heat exchange pipe 3 are both bent into S-shaped structures to adapt to the heat exchange cavity 111, so that the first heat exchange channel 41, the second heat exchange channel 42 and the third heat exchange channel 43 all have S-shaped structures, so as to sufficiently prolong the flow path of the fluid participating in heat exchange in the heat exchange cavity 111, the outer heat exchange pipe 2 and the inner heat exchange pipe 3 respectively in the limited space of the heat exchange cavity 111, thereby improving the heat exchange efficiency and heat exchange effect.

[0061] Further, as shown in Figure 1 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 , the box cover 12 is detachably connected with the box body 11, the box cover 12 is provided with a slot 121 corresponding to the partition rib 117, the partition rib 117 is inserted into the slot 121, and a sealing element 8 for sealing the heat exchange cavity 111 is arranged between the box cover 12 and the box body 11. The sealing element 8 includes a ring-shaped sealing main body 81 and a plurality of sealing partition strips 82 arranged in the sealing main body 81, and the sealing partition strips 82 are pressed in the slot 121 by the partition rib 117. Specifically, the box cover 12 and the box body 11 can be detachably connected by screws, the partition rib 117 is inserted into the slot 121, and the firmness of the cooperation between the box cover 12 and the box body 11 is improved. The sealing partition strips 82 are pressed in the slot 121 by the partition rib 117, so as to ensure that the fluid in the third heat exchange channel 43 can strictly flow along the flow path of the S-shaped structure, avoiding water flow disorder; and the sealing main body 81 adapts to the shape of the edge of the box cover 12, and seals the whole heat exchange cavity 111 between the edge of the box cover 12 and the box body 11.

[0062] As a preferred embodiment of the present application, as shown in Figure 3 and Figure 11As shown, at least part of the inner heat exchange tube 3 is provided with outwardly protruding spiral-shaped turbulence ribs 31. Preferably, the turbulence ribs 31 can be provided on the region of the inner heat exchange tube 3 inside the outer heat exchange tube 2, and the surfaces of the two ends of the outer heat exchange tube 2 extending out of the outer heat exchange tube 2 are smooth to facilitate sealing after being inserted into the waterway connector 5 and the water inlet / outlet connector 7 respectively. By providing the turbulence ribs 31, the heat conduction is improved, and the inner heat exchange tube 3 is centered in the outer heat exchange tube 2, so that the fluid flow and heat transfer in the second heat exchange channel 42 are more uniform, thereby improving the heat transfer efficiency.

[0063] As a preferred embodiment of the present application, as shown in Figure 3 and Figure 12 As shown, at least part of the outer heat exchange tube 2 is corrugated. Preferably, the region of the outer heat exchange tube 2 inside the heat exchange cavity 111 is corrugated, and the surfaces of the two ends of the outer heat exchange tube 2 extending out of the heat exchange cavity 111 are smooth to facilitate sealing after being inserted into the waterway connector 5 and the water inlet / outlet connector 7 respectively. The corrugated structure not only has a smaller bending radius, making the heat exchange device compact and small in size, but also causes the fluid in the second heat exchange channel 42 and the third heat exchange channel 43 to form turbulent flow, so that the fluid is uniformly mixed, and the heat transfer efficiency is improved.

[0064] As a preferred embodiment of the present application, as shown in Figure 3 , Figure 5 and Figure 8 As shown, the heat exchange cavity 111 is provided with a limiting protrusion 118, which stops the outer heat exchange tube 2 and separates the outer heat exchange tube 2 from the inner wall of the heat exchange cavity 111. Specifically, taking the case where the heat exchange cavity 111 is divided into an S-shaped structure by the aforementioned plurality of partition ribs 117 as an example, the limiting protrusion 118 can be provided on the inner wall of the heat exchange cavity 111 and the partition ribs 117, which stops the outer heat exchange tube 2 and separates the outer heat exchange tube 2 from the inner wall of the heat exchange cavity 111, so that the outer heat exchange tube 2 is stably centered in the waterway of the heat exchange cavity 111 and centered in the middle of the S-shaped channel of the heat exchange cavity 111, and the fluid in the third heat exchange channel 43 contacts the outer wall of the outer heat exchange tube 2 more fully, so as to ensure a higher heat exchange efficiency.

[0065] As a preferred embodiment of the present application, as shown in Figure 9 and Figure 13 As shown, one end of the heat exchange water tank 1 is provided with a buckle protrusion 122, and the other end is provided with a buckle groove 123, so that a plurality of heat exchange water tanks 1 can be connected side by side through the buckle protrusion 122 and the buckle groove 123. Specifically, the buckle protrusion 122 and the buckle groove 123 can be provided on the tank covers 12 covering the two sides of the tank body 11 respectively. Figure 13As shown in the middle, the two heat exchange devices are buckled together, through this kind of setting, a plurality of heat exchange devices can be quickly connected and combined together through the buckle protrusion 122 and the buckle groove 123, and the first heat exchange channel 41, the second heat exchange channel 42 and the third heat exchange channel 43 formed in the plurality of heat exchange devices are connected in series according to the needs to form a longer heat exchange path, so that the water temperature after heat exchange is increased or decreased more.

[0066] The places not mentioned in the application can be realized by using or referring to the existing technology.

[0067] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment mainly explains the difference from other embodiments.

[0068] The above only describes the embodiments of the application and is not used to limit the application. The application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the scope of claims of the application.

Claims

1. A heat exchange device, characterized by, The heat exchange device comprises a heat exchange water tank and a heat exchange unit, the heat exchange water tank is provided with a heat exchange cavity for installing the heat exchange unit, the heat exchange unit comprises an outer heat exchange pipe and an inner heat exchange pipe, the inner heat exchange pipe is nested in the inner part of the outer heat exchange pipe, the inner cavity of the inner heat exchange pipe forms a first heat exchange channel, the outer wall of the inner heat exchange pipe and the inner wall of the outer heat exchange pipe form a second heat exchange channel, and the outer wall of the outer heat exchange pipe and the inner wall of the heat exchange cavity form a third heat exchange channel.

2. The heat exchange device according to claim 1, wherein, the heat exchange water tank comprises a tank body and a tank cover, the tank body is provided with a partition plate and the heat exchange cavities on both sides of the partition plate, the tank cover is used for opening or covering the heat exchange cavities, each of the heat exchange cavities is provided with the heat exchange unit, the first heat exchange channels formed in the heat exchange cavities on both sides are connected in series, the second heat exchange channels formed in the heat exchange cavities on both sides are connected in series, and the third heat exchange channels formed in the heat exchange cavities on both sides are connected in series.

3. The heat exchange device according to claim 2, wherein, the heat exchange device comprises a waterway connector, the tank body is provided with first outer insertion through holes penetrating through the heat exchange cavities on both sides, one end of the outer heat exchange pipe and one end of the inner heat exchange pipe are inserted into the waterway connector through the first outer insertion through holes, the waterway connector is provided with first communication channels for connecting the first heat exchange channels on both sides in series and second communication channels for connecting the second heat exchange channels on both sides in series, and the partition plate is provided with a water passing hole for connecting the third heat exchange channels on both sides in series.

4. The heat exchange device according to claim 3, wherein, first sealing bodies are arranged between the inner heat exchange pipe and the waterway connector for sealing the first communication channels, second sealing bodies are arranged between the outer heat exchange pipe and the waterway connector for sealing the second communication channels, and third sealing bodies are arranged between the outer heat exchange pipe and the tank body for sealing the first outer insertion through holes.

5. The heat exchange device according to claim 2, wherein, the heat exchange device comprises an inlet and outlet water connector, the tank body is provided with second outer insertion through holes penetrating through the heat exchange cavities on both sides, one end of the outer heat exchange pipe and one end of the inner heat exchange pipe are inserted into the inlet and outlet water connector through the second outer insertion through holes, the inlet and outlet water connector is provided with a first water inlet connected with the first heat exchange channel on one side and a first water outlet connected with the first heat exchange channel on the other side, the inlet and outlet water connector is provided with a second water inlet connected with the second heat exchange channel on one side and a second water outlet connected with the second heat exchange channel on the other side, and the tank body is provided with a third water inlet connected with the third heat exchange channel on one side and a third water outlet connected with the third heat exchange channel on the other side.

6. The heat exchange device according to claim 2, wherein, the inner wall of the tank body is provided with a plurality of partition ribs protruding towards the tank cover, the plurality of partition ribs divide the heat exchange cavities into S-shaped structures, and the outer heat exchange pipe and the inner heat exchange pipe are both curved into S-shaped structures to adapt to the heat exchange cavities.

7. The heat exchange device according to claim 6, wherein the cover is detachably connected to the tank body, the cover is provided with a slot corresponding to the partitioning rib, the partitioning rib is inserted into the slot, a sealing member for sealing the heat exchange cavity is arranged between the cover and the tank body, the sealing member comprises a ring-shaped sealing body and a plurality of sealing partitions arranged in the sealing body, and the sealing partitions are pressed in the slot by the partitioning rib.

8. The heat exchange device according to any one of claims 1-7, wherein at least a part of the inner heat exchange pipe is provided with outwardly protruding spiral-shaped turbulence ribs. And / or, at least a part of the outer heat exchange pipe is corrugated.

9. The heat exchange device according to any one of claims 1-7, wherein a limiting protrusion is arranged in the heat exchange cavity, the limiting protrusion stops the outer heat exchange pipe, and the outer heat exchange pipe is spaced from the inner wall of the heat exchange cavity.

10. The heat exchange device according to any one of claims 1-7, wherein one end of the heat exchange water tank is provided with a buckle protrusion, and the other end is provided with a buckle groove, so that a plurality of heat exchange water tanks can be connected side by side through the buckle protrusion and the buckle groove. ​ ​ ​ ​

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