Heat exchanger capable of discharging water from same side and water dispenser thereof

Abstract

The heat exchanger comprises an upper box cover and a lower bottom box, the upper box cover is provided with a cold water inlet connector, a cold water outlet connector, a hot water inlet connector and a hot water outlet connector, and the cold water inlet connector and the hot water outlet connector are arranged on the lower bottom box. A closed cavity between the upper box cover and the lower bottom box is internally provided with a plurality of sets of cold water channel plates, hot water channel plates and flow dividing partition plates which are sequentially stacked in a layered mode, and cold water flow channels used for cold water circulation and hot water flow channels used for hot water circulation which are sequentially, alternately and circularly arranged in a layered mode are formed between the multiple sets of adjacent cold water channel plates and hot water channel plates. Water passing holes are formed in the cold water channel plate and the hot water channel plate; through mutual reverse convection of the hot water channel and the cold water channel, heat exchange cooling of hot water and cold water is achieved, the cold water inlet connector and the cold water outlet connector are located on the same side of one side of the upper box cover, connection and installation of peripheral pipelines are facilitated, and boiled water made by the water dispenser can be directly drunk after temperature adjustment.

Description

Technical Field

[0001] The utility model relates to the water heating and exchanging technology, in particular to a heat exchanger with water outlet on the same side and a water dispenser thereof.

Background Art

[0002] Water dispensers that adopt water quality filtration and purification treatment have been widely used, and also integrate functions such as heating and / or refrigeration. With such water dispensers, although they can meet people's needs for cold and hot purified water, during use, since the freshly boiled purified water (i.e., the purified water sterilized by high temperature) is too hot, it is difficult to meet people's requirement of immediately drinking warm water (also called cooled boiled water). For this reason, a heat exchange device is added to the water dispenser. The heat exchange device uses heat exchange technology to make the heat in the boiled purified water be absorbed by the unheated normal-temperature purified water, so as to obtain the cooled boiled water at the desired temperature. When the normal-temperature purified water that has obtained heat is reheated into hot boiled water, heating time and energy consumption can be saved.

[0003] At present, most of the common heat exchange structures for water dispensers are plate type, mother-and-son type, shell-and-tube type, coil type and other heat exchange structures. The pipe heat exchange area of the mother-and-son type, shell-and-tube type and coil type heat exchange structures is small, the water channel is long and the water resistance is large, resulting in a relatively large volume, high cost and great manufacturing difficulty of the whole heat exchange structure, and large-scale production cannot be realized. Although the plate type heat exchange structure has a relatively large heat exchange area, its structure is complex and the connection and sealing requirements between each other are relatively high, which is also not convenient for processing and manufacturing; especially, most of the existing plate type heat exchange structures adopt an S-shaped flow channel structure. Although the heat exchange area is relatively large, the flow rate is slow and the heat exchange efficiency is not fast enough; moreover, due to the limitation of the flow channel, the control mode of the existing water outlet joint can only be limited to a specific angle, which is convenient for the connection of peripheral interfaces and pipeline arrangement.

Content of the Utility Model

[0004] The utility model provides a heat exchanger with water outlet on the same side and a water dispenser thereof. The water inlet and outlet joints are located on the same side, which has the advantages of simple structure, small occupied space, convenient connection and installation of peripheral pipelines, using the stored normal-temperature drinking water to adjust the temperature of the flowing boiling water, preheating the water to be pre-boiled, and simultaneously quickly supplying directly drinkable boiled water.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A heat exchanger with water outlet on the same side, which is used for heat exchange and cooling between hot water and cold water, includes an upper box cover and a lower bottom box, and the upper box cover is buckled on the lower bottom box to form a closed cavity;

[0007] The upper box cover is provided with a cold water inlet joint, a cold water outlet joint, a hot water inlet joint, and a hot water outlet joint. The cold water inlet joint and the cold water outlet joint are located on the same side edge of one side of the upper box cover, and the hot water inlet joint and the hot water outlet joint are located on the same side edge of the other side of the upper box cover;

[0008] A plurality of groups of cold water channel plates, hot water channel plates, and flow dividing partitions are arranged in a layered and superimposed manner in the closed cavity. The cold water channel plates are installed on the upper side or the bottom side of the flow dividing partition, and the hot water channel plates are installed in the middle of the flow dividing partition. Between adjacent groups of cold water channel plates and hot water channel plates, cold water channels for cold water circulation and hot water channels for hot water circulation are formed in a layered and alternating cyclic arrangement. The flow direction of the cold water channels is opposite to the flow direction of the hot water channels. The hot water channels are separated and heat-exchanged with the cold water channels through the cold water channel plates and the hot water channel plates;

[0009] The cold water channel plates and the hot water channel plates are both provided with water passing holes that are respectively and communicatively connected to the cold water inlet joint, the cold water outlet joint, the hot water inlet joint, and the hot water outlet joint;

[0010] On the same side edge of one side of the top of the flow dividing partition along the length direction, there are two first isolation rings that surround the outer periphery of the water passing holes and isolate and separate the cold water channels or hot water channels corresponding to the two water passing holes on the lower side of the same side edge of one side of the cold water channel plate or the hot water channel plate;

[0011] On the same side edge of the other side of the bottom of the flow dividing partition along the length direction, there are two second isolation rings that surround the outer periphery of the water passing holes and isolate and separate the hot water channels or cold water channels corresponding to the two water passing holes on the lower side of the same side edge of the other side of the hot water channel plate or the cold water channel plate;

[0012] The first isolation rings and the second isolation rings sequentially layer and alternately cycle and separate the cold water channels and hot water channels between the cold water channel plates and the hot water channel plates;

[0013] All the cold water channels are connected in parallel through the water passing holes on the cold water channel plates and the hot water channel plates that are not separated and isolated, forming a parallel cold water water path that is communicated with the cold water inlet joint and the cold water outlet joint;

[0014] All the hot water channels are connected in parallel through the water passing holes on the hot water channel plates and the cold water channel plates that are not separated and isolated, forming a parallel hot water water path that is communicated with the hot water inlet joint and the hot water outlet joint.

[0015] Preferably, the diversion baffle, the first isolation ring and the second isolation ring are made of high thermal conductivity ceramic material or plastic material as one piece; the outer periphery of the water holes corresponding to the first isolation ring and the second isolation ring is provided with at least one annular double-ring sealing ring which is used to limit and fix the cold water channel plate or the hot water channel plate and to seal the water holes circumferentially.

[0016] Preferably, the cold water channel plate and the hot water channel plate are both provided with a V-shaped guide area on the length direction for increasing the heat exchange area and controlling the water flow velocity, and the opening direction of the V-shaped guide area on the cold water channel plate is opposite to the opening direction of the V-shaped guide area on the hot water channel plate, and the cold water channel plate and the hot water channel plate are arranged alternately in layers in sequence.

[0017] Preferably, the middle circumferential depression along the thickness direction of the diverter baffle is provided with a side groove for nesting and fitting around the hot water waterway plate, and the circumferential outer edges of the top and bottom sides of the diverter baffle are respectively provided with corrugated surfaces for fitting and connecting the cold water waterway plate and the cold water waterway plates of the adjacent group.

[0018] Preferably, the cold water channel plate and the hot water channel plate are both integrally stamped from stainless steel plates.

[0019] Preferably, a triangular prism for limiting the installation of all the cold water channel plates and all the hot water channel plates is also inserted in the water passage hole.

[0020] A water dispenser, the water outlet pipe of which is provided with a heat exchanger with water outlet on the same side as described above.

[0021] The beneficial effects of the above technical solution are:

[0022] After being connected to the external boiled water source and cold water source respectively through the parallel cold water circuit and the parallel hot water circuit, the hot water channel and the cold water channel convect in the opposite direction to each other. During the convection process, the heat energy of the hot water can be efficiently absorbed by the cold water, thereby realizing rapid heat exchange and cooling between the hot water and the cold water. Meanwhile, the cold water inlet joint and the cold water outlet joint, as well as the hot water inlet joint and the hot water outlet joint are respectively located on the same side of one side of the upper box cover, thereby facilitating the connection and installation of the peripheral pipelines, thereby realizing direct drinking after the boiled water obtained by the drinking machine is temperature-adjusted.

Brief Description of the Drawings

[0023] Figure 1 It is an enlarged schematic diagram of the exploded structure of a group of cold water channel plates, diversion baffles and hot water channel plates in the utility model after being cut;

[0024] Figure 2 It is an enlarged schematic diagram of the assembly structure of a group of cold water channel plates, diversion baffles and hot water channel plates after sectioning of the utility model;

[0025] Figure 3 It is a three-dimensional enlarged schematic diagram of the flow dividing partition in the present utility model;

[0026] Figure 4 It is an enlarged schematic diagram of the sectional structure after assembly in the present utility model;

[0027] Figure 5 is Figure 4 the enlarged schematic diagram of the partial structure in

[0028] Figure 6 It is a three-dimensional enlarged schematic diagram in the present utility model;

[0029] Figure 7 It is an exploded schematic diagram of the present utility model.

[0030] The present utility model will be further described below in conjunction with the drawings and embodiments.

Specific Embodiment

[0031] A heat exchanger with water outlet on the same side, such as Figures 1 to 7As shown in the figure, it is used for heat exchange cooling of hot water and cold water in a water dispenser and preheating of cold water, including an upper box cover 1 and a lower bottom box 2. The upper box cover 1 is buckled on the lower bottom box 2 to form a closed cavity. On the upper box cover 1, there are a cold water inlet joint 3, a cold water outlet joint 4, a hot water inlet joint 5, and a hot water outlet joint 6. The cold water inlet joint 3 and the cold water outlet joint 4 are located on the same side edge on one side of the upper box cover 1, and the hot water inlet joint 5 and the hot water outlet joint 6 are located on the same side edge on the other side of the upper box cover 1. Inside the closed cavity, there are 6 groups of cold water channel plates 7, hot water channel plates 8, and flow dividing partitions 9 that are stacked layer by layer in sequence. The cold water channel plates 7 are installed on the upper side or the bottom side of the flow dividing partition 9, and the hot water channel plates 8 are installed in the middle of the flow dividing partition 9. And between 6 groups of adjacent cold water channel plates 7 and hot water channel plates 8, there are formed cold water channels for cold water to flow and hot water channels for hot water to flow that are arranged in an alternating cyclic manner layer by layer. The flow direction of the cold water channels is opposite to the flow direction of the hot water channels. The hot water channels are separated and shunted by the cold water channel plates 7 and the hot water channel plates 8 and exchange heat with the cold water channels. Both the cold water channel plates 7 and the hot water channel plates 8 are provided with water passing holes that are respectively and communicatively connected to the cold water inlet joint 3, the cold water outlet joint 4, the hot water inlet joint 5, and the hot water outlet joint 6. A triangular prism 10 for installing and limiting all the cold water channel plates 7 and all the hot water channel plates 8 is inserted in the water passing holes. At the same side edge along the length direction on the top of the flow dividing partition 9, there are two first isolation rings 11 that surround the outside of the water passing holes and isolate and separate the cold water channels or hot water channels corresponding to the two water passing holes on the lower side of the same side edge of one side of the cold water channel plates 7 or the hot water channel plates 8. At the same side edge along the length direction on the bottom of the flow dividing partition 9, there are two second isolation rings 12 that surround the outside of the water passing holes and isolate and separate the hot water channels or cold water channels corresponding to the two water passing holes on the lower side of the same side edge of the other side of the hot water channel plates 8 or the cold water channel plates 7. The first isolation rings 11 and the second isolation rings 12 sequentially and alternately divide and isolate the cold water channels and hot water channels between the cold water channel plates 7 and the hot water channel plates 8. All the cold water channels are connected in parallel through the water passing holes on the cold water channel plates 7 and the hot water channel plates 8 that are not divided and isolated, forming a parallel cold water water path that is communicated with the cold water inlet joint 3 and the cold water outlet joint 4. All the hot water channels are connected in parallel through the water passing holes on the hot water channel plates 8 and the cold water channel plates 7 that are not divided and isolated, forming a parallel hot water water path that is communicated with the hot water inlet joint 5 and the hot water outlet joint 6.

[0032] As Figures 1 to 3As shown, both the cold water channel plate 7 and the hot water channel plate 8 are integrally formed by stamping a stainless steel plate. Along the length direction, V-shaped diversion areas for increasing the heat exchange area and controlling the water flow rate are provided on both the cold water channel plate 7 and the hot water channel plate 8. Moreover, the opening directions of the V-shaped diversion areas on the cold water channel plate 7 are opposite to those on the hot water channel plate 8, and the cold water channel plate 7 and the hot water channel plate 8 are arranged in an alternating layer-by-layer manner. The shunt partition plate 9 is circumferentially recessed in the middle along the thickness direction to form an edge groove 90 for nested cooperation with the periphery of the hot water channel plate 8. Corrugated surfaces 91 for fitting and connecting with the peripheries of the cold water channel plate 7 and the adjacent cold water channel plates 7 are respectively provided on the top and bottom circumferential outer edges of the shunt partition plate 9.

[0033] Continue as Figures 1 to 3 As shown, the shunt partition plate 9, the first isolation ring 11, and the second isolation ring 12 are all integrally processed from a high thermal conductivity ceramic material or a plastic material; two annular enclosures are respectively arranged around the water passing holes corresponding to the first isolation ring 11 and the second isolation ring 12, and double-ring sealing rings 13 for limiting and fixing the cold water channel plate 7 or the hot water channel plate 8 and for circumferentially sealing the water passing holes are provided.

[0034] During use, after the parallel cold water waterway and the parallel hot water waterway are respectively connected to the external boiling water source and cold water source, the hot water channel and the cold water channel are in mutual convection. During the convection process, the heat energy of the hot water can be efficiently absorbed by the cold water, realizing rapid heat exchange and cooling between the hot water and the cold water. At the same time, the cold water inlet joint 3 and the cold water outlet joint 4, and the hot water inlet joint 5 and the hot water outlet joint 6 are respectively located on the same side of one side of the upper box cover 1, facilitating the connection and installation of the peripheral pipelines, and enabling the directly drinking of the boiled water obtained by the water dispenser after temperature adjustment.

[0035] The above-described embodiments are only the preferred embodiments of the present invention, and do not limit the implementation scope of the present invention. Any obvious changes made according to the shape, structure, and principle of the present invention, as well as other changes that do not deviate from the essence of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A heat exchanger with water outlet on the same side, used for heat exchange and cooling of hot water and cold water, characterized in that: It comprises an upper box cover and a lower box bottom, wherein the upper box cover is buckled on the lower box bottom to form a closed cavity; The upper box cover is provided with a cold water inlet joint and a cold water outlet joint, a hot water inlet joint and a hot water outlet joint, the cold water inlet joint and the cold water outlet joint are located on the same side of one side of the upper box cover, and the hot water inlet joint and the hot water outlet joint are located on the same side of the other side of the upper box cover; The closed cavity is provided with a plurality of groups of cold water channel plates, hot water channel plates and diversion baffles stacked in layers in sequence, the cold water channel plates are installed on the upper side or the bottom side of the diversion baffles, the hot water channel plates are installed in the middle of the diversion baffles, and a plurality of groups of adjacent cold water channel plates and hot water channel plates form cold water channels for cold water circulation and hot water channels for hot water circulation that are arranged in layers and alternately in cycles in sequence, the flow direction of the cold water channel is opposite to that of the hot water channel, and the hot water channel passes through the cold water channel plates and the hot water channel plates to perform cold and hot water interval diversion and heat exchange with the cold water channel; The cold water channel plate and the hot water channel plate are both provided with water holes which are respectively connected to the cold water inlet joint, the cold water outlet joint, the hot water inlet joint and the hot water outlet joint; Two first isolation rings are provided at the same side of one side of the top of the flow dividing plate along the length direction, surrounding the outer periphery of the water passing hole and isolating and separating the cold water flow channel or the hot water flow channel corresponding to the two water passing holes on the lower side of the same side of the cold water channel plate or the hot water channel plate; Two second isolation rings are provided at the same side of the other side of the bottom of the flow dividing plate along the length direction, surrounding the outer periphery of the water passing hole and isolating and separating the hot water flow channel or the cold water flow channel corresponding to the two water passing holes on the lower side of the same side of the other side of the hot water channel plate or the cold water channel plate; The first isolation ring and the second isolation ring separate and isolate the cold water flow channel and the hot water flow channel between the cold water channel plate and the hot water channel plate in layers and in alternating cycles; All cold water channels are connected in parallel through the undivided and isolated water holes on the cold water channel plate and the hot water channel plate to form a parallel cold water channel connected to the cold water inlet joint and the cold water outlet joint; All hot water channels are connected in parallel through the undivided and isolated water holes on the hot water channel plate and the cold water channel plate to form a parallel hot water water channel connected to the hot water inlet joint and the hot water outlet joint.

2. A heat exchanger with water outlet on the same side according to claim 1, characterized in that: The diversion baffle, the first isolation ring and the second isolation ring are made of high thermal conductivity ceramic material or plastic material. The outer periphery of the water holes corresponding to the first isolation ring and the second isolation ring is provided with at least one annular double-ring sealing ring for limiting and fixing the cold water channel plate or the hot water channel plate and circumferentially sealing the water holes.

3. A heat exchanger with water outlet on the same side according to claim 1, characterized in that: The cold water channel plate and the hot water channel plate are both provided with a V-shaped guide area in the length direction for increasing the heat exchange area and controlling the water flow velocity, and the opening direction of the V-shaped guide area on the cold water channel plate is opposite to the opening direction of the V-shaped guide area on the hot water channel plate. The cold water channel plate and the hot water channel plate are arranged alternately in layers in sequence.

4. A heat exchanger with water outlet on the same side according to claim 1, characterized in that: The middle circumferential depression along the thickness direction of the diverter baffle is provided with a side groove for nesting and fitting around the hot water waterway plate, and the circumferential outer edges of the top and bottom sides of the diverter baffle are respectively provided with corrugated surfaces for fitting and connecting the cold water waterway plate and the cold water waterway plates of the adjacent group.

5. A heat exchanger with water outlet on the same side according to claim 1 or 4, characterized in that: The cold water channel plate and the hot water channel plate are both integrally stamped from stainless steel plates.

6. A heat exchanger with water outlet on the same side according to claim 1, characterized in that: The water holes are also provided with triangular prisms for limiting the installation of all the cold water channel plates and all the hot water channel plates.

7. A water dispenser, characterized in that: The water outlet pipe of the water dispenser is provided with a heat exchanger with water outlet on the same side as claimed in any one of claims 1 to 6.

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