CN208551322U - Drain assembly and cold tank - Google Patents

Abstract

The utility model provides a kind of drain assembly and cold tank；Drain assembly includes: drainage element, is high pressure resistant drainage element；First connector is arranged in one end of drainage element, and is connected with drainage element；Plug is directly or indirectly detachably connected with the other end of drainage element；Wherein, drainage element and the first connector are the structure of both ends open and inner hollow.Drainage element itself can bear higher pressure, it is not in lead to the phenomenon that bursting because hydraulic pressure is excessive, simultaneously, it is connected between drainage element and the equipment that need to be drained using the first connector, first connector can bear certain pressure, so that the leakproofness of the two junction is preferable, the phenomenon that being not in leak and burst.It particularly with the cold tank inside water dispenser, is discharged using hydraulic pressure water-driven, water flow has biggish pressure to drainage element when draining, and the drain assembly of the utility model can effectively bear this pressure, will not burst, keep water dispenser more secure and reliable to use.

Description

Drain assembly and cold tank

Technical field

The utility model relates to water dispenser technical fields, in particular to a kind of drain assembly and cold tank.

Background technique

Currently, if failing to handle well at drainpipe, will have the risk of leak, at present using the cold tank of hydraulic pressure water-driven Product on the market simply cancels draining, but in order to meet the draining of machine when not in use, and being pacified with water for protection user Entirely, the demand of the draining after cold tank is periodically cleaned, it is also necessary to drainpipe is set, cannot be entirely eliminated, therefore, a energy Enough guarantee that the water drainage part of cold tank safety drain becomes one of people's urgent problem.

Utility model content

The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.

For this purpose, the one side of the utility model is, a kind of drain assembly is proposed.

The second aspect of the utility model is, proposes a kind of cold tank.

In view of this, according to the present utility model in a first aspect, providing a kind of drain assembly, drain assembly includes: row Water part, drainage element are high pressure resistant drainage element；First connector is arranged in one end of drainage element, and is connected with drainage element；Plug, Plug is directly or indirectly detachably connected with the other end of drainage element；Wherein, drainage element and the first connector are that both ends are opened The structure of mouth and inner hollow.

Drain assembly provided by the utility model, including drainage element, the first connector and plug, wherein drainage element is resistance to High Pressure Drain part, one end of drainage element is arranged in the first connector, and is connected with drainage element, plug directly or indirectly with draining The other end of part is detachably connected, when user is drained using drain assembly, firstly, can connect the first connector of drain assembly To the cold tank of the equipment that need to be drained such as water dispenser, after drainage element is placed into suitable position, plug draining is opened, row is worked as After complete water, plug can be reinstalled, drain assembly is disassembled and is stored, or drain assembly not dismantled down Come, drain assembly is fastened in equipment, avoiding need to reinstall when reusing.Wherein, drainage element is high pressure resistant draining Part, its own can bear higher pressure, be not in because hydraulic pressure is excessive cause explosion the phenomenon that, meanwhile, drainage element and need It is connected between the equipment of draining using the first connector, the first connector can bear certain pressure, so that the two junction is close Envelope property is preferable, the phenomenon that being not in leak and burst.Particularly with the cold tank inside water dispenser, hydraulic pressure water-driven is used Water outlet, water flow has biggish pressure to drainage element when draining, and the drain assembly of the utility model can effectively bear this pressure The phenomenon that power is not in explosion, so that water dispenser is more secure and reliable to use.

In addition, can also be had following additional according to the drain assembly in above-mentioned technical proposal provided by the utility model Technical characteristic:

In the above-mentioned technical solutions, it is preferable that drainage element is polyethylene drainage part.

In the technical scheme, drainage element is polyethylene drainage part, and intensity is high, anticorrosive, non-corrosive wearability is good, pole It is suitably applied in draining field, and drainage element can bear biggish hydraulic pressure, and the service life is longer.Preferably, high density can be selected Polyethylene drainage part, more, and better mechanical property is not easily broken the pressure-bearing effect of the drainage element of this material.

In any of the above-described technical solution, it is preferable that drain assembly further include: the second connector is both ends open and interior The hollow structure in portion, the second connector are arranged between drainage element and plug；Wherein, one end of drainage element is plugged in the second connector Interior, one end of plug is plugged in the second connector, and plug covers the second connector.

In the technical scheme, drain assembly further includes the second connector, is the structure of both ends open and inner hollow, the Two connectors are arranged between drainage element and plug, wherein one end of drainage element is plugged in the second connector, and one end of plug plugs In the second connector, and plug covers the second connector, and the second connector plays the role of accepting drainage element and plug, relative to stifled The directly stifled one end for being located at drainage element of head, the interface of this structure are hidden in the inside of the second connector, better tightness, interface It is not easy leak.Specifically, screw thread or position limiting structure be may be provided on the outer wall of the second connector, for fixing the second connector It is mobile in the process of draining to prevent it in equipment or somewhere, and store fixation after use somewhere convenient for it.

In any of the above-described technical solution, it is preferable that the first connector and the second connector are high pressure resistant quick coupling.

In the technical scheme, the first connector and the second connector are high pressure resistant quick coupling, bear that pressure is big, corrosion resistant It erosion, good airproof performance, No leakage and does not need using any tool, it will be able to realize the rapid assembly and disassembly with water pipe, it is time saving and energy saving, So that the drainpipe of drain assembly is when with needing the water pipe of the equipment drained to connect, it is more convenient.Wherein it is preferred to which this is resistance to High-voltage quick joint can bear the hydraulic pressure of 2MPa or more, certainly, be not limited only to this.

In any of the above-described technical solution, it is preferable that high pressure resistant quick coupling includes: main body, main body be both ends open and The structure of inner hollow；The inside of main body is arranged at least one clamping device；At least one sealing element, is arranged in main body It is internal.

In the technical scheme, high pressure resistant quick coupling includes main body, clamping device and sealing element, when high pressure resistant quick When connector is connect with water pipe, water pipe need to only be plugged to the inside of main body, clamping device can clamp water pipe, and sealing element plays guarantor The leakproofness of both cards junction.Wherein, settable there are two clamping device and at least one sealing element in the first connector, Two clamping devices are located at the both ends of main body, and for the first connector, one end of drainage element is plugged in the main body of the first connector Interior, a main intracorporal clamping device clamps drainage element, guarantees the stability that drainage element is connect with the first connector, and sealing element is protected The airtightness connected herein is demonstrate,proved, certainly, the clamping device of the other end in connector is in order to when the water in the equipment for needing to drain Pipe plays a part of to be fixedly clamped when being inserted into drainage element；The other end of drainage element can be plugged in the second connector, meanwhile, the second connector Main body in settable there are two clamping device and at least one sealing element, the intracorporal clamping device of the master of the second connector The other end of drainage element is clamped, guarantees the stability of connection, sealing element can guarantee the airtightness connected herein, one end of plug When being plugged in the second connector, it is fixedly clamped in the same way.

In any of the above-described technical solution, it is preferable that plug includes: ontology, and ontology is plugged in the inside of the second connector；It is stifled Cap, blocking cap are connected with ontology, and are located at the outside of the second connector.

In the technical scheme, plug includes ontology and blocking cap, wherein ontology is plugged in the inside of the second connector, uses In the opening for sealing up the second connector, drainage element is prevented when not in use, since drainage element is led with the liquid communication in equipment Cause leak；Blocking cap is connected with ontology, and is located at the outside of the second connector, and convenient for user by grabbing this blocking cap, plug is pacified It is taken out in the second connector, or out of second connector.

In any of the above-described technical solution, it is preferable that ontology is an integral structure with blocking cap.

In the technical scheme, ontology is an integral structure with blocking cap, so that the whole intensity of plug is higher, it is not easy to Damage, long service life, and subsequent processing and manufacturing is avoided, procedure of processing is simplified, is reduced costs.

In any of the above-described technical solution, it is preferable that the quantity of drainage element is at least one；The quantity of first connector is extremely It is one few；When the quantity of drainage element is multiple, multiple drainage elements, which are sequentially connected, to be connect, and between two drainage elements of arbitrary neighborhood It is provided with the first connector.

In the technical scheme, when the quantity of drainage element and the first connector is multiple, specifically, drainage element head and the tail are sequentially It is connected, and is connected with the first connector between any two drainage element, while being located at the first drainage element, end is provided with the One connector, for being connected by this connector with the water pipe in the equipment drained is needed, this structure makes the entirety of drain assembly Lengthen, when equipment distance draining water channel farther out when, multistage drainage element can be used and be connected, have reached enough length, work as row After complete water, multistage drainage element can also be disassembled and be stored, so that the application range of drain assembly is wider, that is, is suitable for Short distance draining, is also suitable and drains over long distances, improve the usage experience and satisfaction of user.

Second aspect according to the present utility model proposes a kind of cold tank, comprising: row described in any of the above-described technical solution Water assembly.

Therefore cold tank provided by the utility model, has the row including drain assembly described in any of the above-described technical solution Whole beneficial effects of water assembly, details are not described herein.

In addition, can also have following supplementary technology according to the cold tank in above-mentioned technical proposal provided by the utility model Feature:

In the above-mentioned technical solutions, it is preferable that cold tank further include: cylinder, cylinder are the structure of inner hollow；Drainpipe, Drainpipe setting is connected on cylinder, and with cylinder；Wherein, drainpipe is plugged in the inside of the first connector of drain assembly； Water inlet pipe is arranged on cylinder；Outlet pipe is arranged on cylinder.

In the technical scheme, cold tank is applied in the equipment such as water dispenser, and the outer wall of cylinder lower part is also wound with heat exchanger, For the hydrothermal exchange with cylinder lower part, so that cold water area is formed at cylinder lower part, top is room temperature pool, and cold tank passes through water inlet pipe Water is supplemented into cylinder, and the cold water in cold tank is delivered to the water outlet of water dispenser by outlet pipe.Cold tank further includes cylinder And drainpipe, cold tank are typically employed on water dispenser, wherein drainpipe setting is connected on cylinder, and with cylinder, drains Pipe is plugged in the inside of the first connector of drain assembly, realizes being connected for cold tank and drain assembly, it is preferable that drain assembly It can be installed on cold tank.It need to be discharged in its cylinder when needing draining or cold tank not to use after the cleaning of the cylinder of cold tank When the water of inside, the screw thread or position limiting structure being arranged on the outer wall that drain assembly is passed through the second connector are fixed on and set Standby upper or somewhere carries out proper drainage, so that drain assembly will not during draining in the plug for opening drain assembly Play can install plug after draining, then drain assembly is removed from certain bearing, still utilize the second connector Outer wall on the screw thread that is arranged or position limiting structure be fixed on water dispenser, complete the storage to drain assembly.

The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this The practice of type is recognized.

Detailed description of the invention

The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will Become obvious and be readily appreciated that, in which:

Fig. 1 is the explosive view of drain assembly in one embodiment of the utility model；

Fig. 2 is the structural schematic diagram of drain assembly in one embodiment of the utility model；

Fig. 3 is the explosive view of the cold tank in one embodiment of the utility model including drain assembly；

Fig. 4 is the structural schematic diagram of the cold tank in one embodiment of the utility model including drain assembly.

Wherein, the corresponding relationship in Fig. 1 to Fig. 4 between appended drawing reference and component names are as follows:

100 drain assemblies, 102 drainage elements, 104 first connectors, 106 second connectors, 108 plugs, 110 ontologies, 112 is stifled Cap, 200 cold tanks, 202 cylinders, 204 water inlet pipes, 206 outlet pipes, 208 drainpipes.

Specific embodiment

In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen The feature in embodiment and embodiment please can be combined with each other.

Many details are explained in the following description in order to fully understand the utility model, still, this is practical Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously It is not limited by the specific embodiments disclosed below.

The drain assembly 100 according to the utility model some embodiments and cold tank are described referring to Fig. 1 to Fig. 4 200。

As shown in Figures 1 to 4, the embodiment of the utility model first aspect provides a kind of drain assembly 100, draining group Part 100 includes: drainage element 102, and drainage element 102 is high pressure resistant drainage element 102；First connector 104, is arranged in drainage element 102 One end, and be connected with drainage element 102；Plug 108, the other end of the plug 108 indirectly with drainage element 102 are detachably connected； Second connector 106, is the structure of both ends open and inner hollow, and the second connector 106 is arranged in drainage element 102 and plug 108 Between；Wherein, one end of drainage element 102 is plugged in the second connector 106, and one end of plug 108 is plugged in the second connector 106 It is interior, and plug 108 covers the second connector 106；Wherein, drainage element 102 and the first connector 104 are both ends open and inside Hollow structure.

Drain assembly 100 provided by the utility model, including drainage element 102, the first connector 104 and plug 108, In, drainage element 102 is high pressure resistant drainage element 102, and the first connector 104 is arranged in one end of drainage element 102, and with drainage element 102 It is connected, the other end of the plug 108 indirectly with drainage element 102 is detachably connected, when user is drained using drain assembly 100 When, firstly, the first connector 104 of drain assembly 100 can be connected on the cold tank 200 for the equipment such as water dispenser that need to be drained, After drainage element 102 is placed into suitable position, opens plug 108 and drain, after drained water, plug 108 can be reinstalled It is good, drain assembly 100 is disassembled and is stored, or drain assembly 100 is not disassembled, drain assembly 100 is blocked It is located in equipment, avoiding need to reinstall when reusing.Wherein, drainage element 102 is high pressure resistant drainage element 102, its own Can bear higher pressure, be not in because hydraulic pressure is excessive to lead to explosion the phenomenon that, meanwhile, drainage element 102 with need to drain It is connected between equipment using the first connector 104, the first connector 104 can bear certain pressure, so that the two junction is close Envelope property is preferable, the phenomenon that being not in leak and burst.Particularly with the cold tank 200 inside water dispenser, hydraulic pressure water is used Driving water outlet, water flow has biggish pressure to drainage element 102 when draining, and the drain assembly 100 of the utility model can be effective The phenomenon that bearing this pressure, being not in explosion, so that water dispenser is more secure and reliable to use.

Wherein, drain assembly 100 further includes the second connector 106, is the structure of both ends open and inner hollow, second connects First 106 are arranged between drainage element 102 and plug 108, wherein one end of drainage element 102 is plugged in the second connector 106, is blocked up First 108 one end is plugged in the second connector 106, and plug 108 covers the second connector 106, and the second connector 106 plays undertaking The effect of drainage element 102 and plug 108, relative to the directly stifled one end for being located at drainage element 102 of plug 108, the interface of this structure It is hidden in the inside of the second connector 106, better tightness, interface is not easy leak.Specifically, the second connector 106 is outer It may be provided with screw thread or position limiting structure on wall, for the second connector 106 to be fixed in equipment or somewhere, to prevent it from arranging The process of water is mobile, and stores and fix somewhere after use convenient for it.

In one embodiment of the utility model, it is preferable that drainage element 102 is polyethylene drainage part.

In this embodiment, drainage element 102 is polyethylene drainage part, and intensity is high, anticorrosive, non-corrosive wearability is good, Extremely suitable to apply in draining field, drainage element 102 can bear biggish hydraulic pressure, and the service life is longer.Preferably, height can be selected Density polyethylene drainage element, more, and better mechanical property is not easily broken the pressure-bearing effect of the drainage element 102 of this material.

In one embodiment of the utility model, it is preferable that the first connector 104 and the second connector 106 are resistance to height Press quick coupling.

In this embodiment, the first connector 104 and the second connector 106 are high pressure resistant quick coupling, bear pressure it is big, It corrosion-resistant, good airproof performance, No leakage and does not need using any tool, it will be able to realize the rapid assembly and disassembly with water pipe, it is time saving It is laborsaving, so that the drainpipe 208 of drain assembly 100 is when with needing the water pipe of the equipment drained to connect, it is more convenient.Wherein, Preferably, the hydraulic pressure that this high pressure resistant quick coupling can bear 2MPa or more is not limited only to this certainly.

In one embodiment of the utility model, it is preferable that high pressure resistant quick coupling includes: main body, and main body is both ends The structure of opening and inner hollow；The inside of main body is arranged at least one clamping device；At least one sealing element, setting exist The inside of main body.

In this embodiment, high pressure resistant quick coupling includes main body, clamping device and sealing element, when high pressure resistant fast quick access When head is connect with water pipe, water pipe need to only be plugged to the inside of main body, clamping device can clamp water pipe, and sealing element plays guarantee The leakproofness of the two junction.It is wherein, settable there are two clamping device and at least one sealing element in the first connector 104, The both ends of main body are located in two clamping devices, for the first connector 104, one end of drainage element 102 is plugged in first and connects In first 104 main body, a main intracorporal clamping device clamps drainage element 102, guarantees drainage element 102 and the first connector 104 The stability of connection, sealing element guarantee the airtightness connected herein, and certainly, the clamping device of the other end in connector is to work as Water pipe in the equipment for needing to drain plays a part of to be fixedly clamped when being inserted into drainage element 102；The other end of drainage element 102 can plug In the second connector 106, meanwhile, in the main body of the second connector 106 it is settable there are two clamping device and at least one sealing Part, the intracorporal clamping device of the master of the second connector 106 clamp the other end of drainage element 102, guarantee the stability of connection, Sealing element guarantees that the airtightness connected herein presss from both sides in the same way when one end of plug 108 is plugged in the second connector 106 It fastens.

As shown in figures 1 and 3, in one embodiment of the utility model, it is preferable that plug 108 includes: ontology 110, Ontology 110 is plugged in the inside of the second connector 106；Blocking cap 112, blocking cap 112 are connected with ontology 110, and are located at the second connector 106 outside.

In this embodiment, plug 108 includes ontology 110 and blocking cap 112, wherein ontology 110 is plugged in the second connector 106 inside prevents drainage element 102 when not in use for sealing up the opening of the second connector 106, due to drainage element 102 with set Lead to leak for interior liquid communication；Blocking cap 112 is connected with ontology 110, and is located at the outside of the second connector 106, just In user by grabbing this blocking cap 112, plug 108 is mounted in the second connector 106, or is taken out out of second connector 106.

As shown in figures 1 and 3, in one embodiment of the utility model, it is preferable that ontology 110 is one with blocking cap 112 Body formula structure.

In this embodiment, ontology 110 is an integral structure with blocking cap 112 so that the whole intensity of plug 108 compared with It is high, it is not easy to damage, long service life, and avoid subsequent processing and manufacturing, simplify procedure of processing, reduce costs.

In one embodiment of the utility model, it is preferable that the quantity of drainage element 102 is at least one；First connector 104 quantity is at least one；When the quantity of drainage element 102 is multiple, multiple drainage elements 102, which are sequentially connected, to be connect, and any The first connector 104 is provided between two adjacent drainage elements 102.

In this embodiment, when the quantity of drainage element 102 and the first connector 104 is multiple, specifically, drainage element 102 Head and the tail, which are sequentially connected, to be connect, and the first connector 104 is connected between any two drainage element 102, while being located at the first drainage element 102, end is provided with the first connector 104, for being connected by this connector with the water pipe in the equipment drained is needed, this knot Structure lengthens the whole of drain assembly 100, when the water channel of equipment distance draining farther out when, 102 phase of multistage drainage element can be used Connection, has reached enough length, after drained water, can also disassemble multistage drainage element 102 and store, so that row The application range of water assembly 100 is wider, that is, is suitable for short distance and drains, be also suitable and drain over long distances, improve the use of user Experience and satisfaction.

Second aspect according to the present utility model proposes a kind of cold tank 200, comprising: row described in any of the above-described embodiment Water assembly 100.

Therefore cold tank 200 provided by the utility model has including drain assembly 100 described in any of the above-described embodiment Whole beneficial effects of the drain assembly 100, details are not described herein.

As shown in Figure 3 and Figure 4, in one embodiment of the utility model, it is preferable that cold tank 200 further include: cylinder 202, cylinder 202 is the structure of inner hollow；Water inlet pipe 204 is arranged on cylinder 202；Outlet pipe 206 is arranged in cylinder 202 On；Drainpipe 208, the setting of drainpipe 208 are connected on cylinder 202, and with cylinder 202；Wherein, drainpipe 208 is plugged in The inside of first connector 104 of drain assembly 100.

In this embodiment, cold tank 200 is applied in the equipment such as water dispenser, and the outer wall of 202 lower part of cylinder, which is also wound with, to be changed Hot device, for the hydrothermal exchange with 202 lower part of cylinder, so that cold water area is formed at 202 lower part of cylinder, top is room temperature pool, cold Tank 200 supplements water into cylinder 202 by water inlet pipe 204, and the cold water in cold tank 200 is delivered to drinking-water by outlet pipe 206 The water outlet of machine.Cold tank 200 further includes cylinder 202 and drainpipe 208, and cold tank 200 is typically employed on water dispenser, In, the setting of drainpipe 208 is connected on cylinder 202, and with cylinder 202, and drainpipe 208 is plugged in the of drain assembly 100 The inside of one connector 104 realizes being connected for cold tank 200 and drain assembly 100, it is preferable that drain assembly 100 can pacify always On cold tank 200.Its cylinder 202 when needing draining or cold tank 200 not to use after the cylinder 202 of cold tank 200 cleans The screw thread being arranged on the outer wall that drain assembly 100 is passed through the second connector 106 when the water of its inside need to be discharged or limit Structure, is fixed in equipment or somewhere, in the plug 108 for opening drain assembly 100, proper drainage is carried out, so that draining group Part 100 during draining will not play plug 108 can be installed after draining, then by drain assembly 100 from Certain bearing removes, and the screw thread or position limiting structure being still arranged on the outer wall using the second connector 106 are fixed on water dispenser, Complete the storage to drain assembly 100.

In the present invention, term " multiple " then refers to two or more, unless otherwise restricted clearly.Term The terms such as " installation ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, It can be and be detachably connected, or be integrally connected；" connected " can be directly connected, and can also pass through the indirect phase of intermediary Even.For the ordinary skill in the art, it can understand above-mentioned term in the present invention as the case may be Concrete meaning.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples In can be combined in any suitable manner.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of drain assembly, which is characterized in that the drain assembly includes:

Drainage element, the drainage element are high pressure resistant drainage element；

First connector is arranged in one end of the drainage element, and is connected with the drainage element；

Plug, the other end of the plug directly or indirectly with the drainage element are detachably connected；

Wherein, the drainage element and first connector are the structure of both ends open and inner hollow.

2. drain assembly according to claim 1, which is characterized in that

The drainage element is polyethylene drainage part.

3. drain assembly according to claim 1, which is characterized in that the drain assembly further include:

Second connector is the structure of both ends open and inner hollow, the second connector setting the drainage element with it is described Between plug；

Wherein, one end of the drainage element is plugged in second connector, and one end of the plug is plugged in described second and connects In head, and the plug covers second connector.

4. drain assembly according to claim 3, which is characterized in that

First connector and second connector are high pressure resistant quick coupling.

5. drain assembly according to claim 4, which is characterized in that the high pressure resistant quick coupling includes:

Main body, the main body are the structure of both ends open and inner hollow；

The inside of the main body is arranged at least one clamping device；

The inside of the main body is arranged at least one sealing element.

6. drain assembly according to claim 3, which is characterized in that the plug includes:

Ontology, the ontology are plugged in the inside of second connector；

Blocking cap, the blocking cap are connected with the ontology, and are located at the outside of second connector.

7. drain assembly according to claim 6, which is characterized in that

The ontology is an integral structure with the blocking cap.

8. drain assembly according to any one of claim 1 to 7, which is characterized in that

The quantity of the drainage element is at least one；

The quantity of first connector is at least one；

When the quantity of the drainage element is multiple, multiple drainage elements, which are sequentially connected, to be connect, and described in two of arbitrary neighborhood First connector is provided between drainage element.

9. a kind of cold tank characterized by comprising such as drain assembly described in any item of the claim 1 to 8.

10. cold tank according to claim 9, which is characterized in that the cold tank further include:

Cylinder, the cylinder are the structure of inner hollow；

Drainpipe, the drainpipe setting are connected on the cylinder, and with the cylinder；

Wherein, the drainpipe is plugged in the inside of the first connector of the drain assembly.