US20170146268A1 - Water Chiller Apparatus - Google Patents
Water Chiller Apparatus Download PDFInfo
- Publication number
- US20170146268A1 US20170146268A1 US14/950,314 US201514950314A US2017146268A1 US 20170146268 A1 US20170146268 A1 US 20170146268A1 US 201514950314 A US201514950314 A US 201514950314A US 2017146268 A1 US2017146268 A1 US 2017146268A1
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- United States
- Prior art keywords
- storage tank
- chiller apparatus
- negative pitch
- refrigerant
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 59
- 239000003507 refrigerant Substances 0.000 claims abstract description 47
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000012546 transfer Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 5
- 230000002708 enhancing effect Effects 0.000 claims 2
- 239000012774 insulation material Substances 0.000 claims 2
- 239000012530 fluid Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011555 saturated liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- -1 organics Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
- F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/005—Compression machines, plants or systems with non-reversible cycle of the single unit type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/071—Compressor mounted in a housing in which a condenser is integrated
Abstract
The present subject matter provides chiller apparatus including a storage tank for storing the liquid and a refrigerant cooling system. The refrigerant cooling system includes a compressor attached to the storage tank, a condenser positioned downstream from the compressor to condense a refrigerant received therefrom, and at least one evaporator positioned downstream of the condenser and wrapped about the outer surface of the storage tank. The evaporator includes a negative pitch coil configured to direct refrigerant flow from a position near a top of the storage tank to a position near a bottom of the storage tank.
Description
- The present subject matter relates generally to water chiller apparatuses and appliances.
- Water chilling units have been adopted for wide range of commercial and residential settings. Whether the need is for a precisely-chilled medical imaging device, or an immediately-accessible supply of cooled drinking water, water chillers have numerous potential uses. However, most existing water chillers are only available for large-scale operations. The high costs and/or large footprint of these existing machines makes them unusable for many potential customers. Although some conventional systems may offer a large supply of pre-chilled water, many potential users have neither the space nor resources needed to invest in these conventional systems. Other conventional systems may require less space, but typically have little, if any, storage capacity for pre-chilled water.
- In addition, the energy requirements for some such systems can be quite high. When the need for chilled water arises, users may be forced to wait a considerable amount of time for water to reach the appropriate temperature. If the stored amount of chilled water is minimal, the user will risk quickly exhausting the chiller's supply. Even when rapid chilling is possible, conventional systems typically require a user to expend large amounts of electrical power to quickly chill lukewarm water. The delay and/or expense of using such systems makes these conventional systems impractical for many potential uses and/or users.
- As a result, there is a need for an efficient and inexpensive water chiller that requires less space than conventional systems, while still providing an adequate amount of immediately-accessible pre-chilled water storage.
- The present disclosure relates, generally, to a chiller apparatus including a storage tank and a refrigerant cooling system. The refrigerant cooling system includes a compressor, condenser, and evaporator attached to the storage tank to efficiently cool liquid therein. Advantageously, the chiller apparatus may be smaller and less expensive to operate than conventional systems. Additional aspects and advantages of the invention will be set forth in part in the following description, or may be apparent from the description, or may be learned through practice of the invention.
- In one exemplary embodiment, a chiller apparatus for cooling a liquid is provided. The chiller apparatus includes a storage tank for storing the liquid and a refrigerant cooling system. The storage tank has a top, a bottom, and an outer surface. The refrigerant cooling system includes a compressor attached to the storage tank, a condenser positioned downstream from the compressor to condense a refrigerant received therefrom, and at least one evaporator positioned downstream of the condenser and wrapped about the outer surface of the storage tank. The evaporator includes a negative pitch coil configured to direct refrigerant flow from a position near the top of the storage tank to a position near the bottom of the storage tank.
- In another embodiment a chiller apparatus is provided. The chiller apparatus includes a storage tank defining an interior volume for the receipt of liquid to be chilled. The storage tank includes a sidewall having an inner surface defining the interior volume and configured for contact with the liquid. The storage tank has an outer surface not contacting the liquid, and a bottom portion and a top portion. The chiller apparatus includes a support plate disposed over the storage tank, and a sealed cooling system for circulating a refrigerant. The cooling system includes a compressor mounted to the support plate for compressing the refrigerant, a condenser positioned downstream from the compressor on the support plate to condense the refrigerant received from the compressor, and at least one evaporator positioned downstream of the condenser and wrapped about the outer surface of the sidewall. The evaporator includes a negative pitch coil configured to direct a refrigerant flow from the top portion of the storage tank toward the bottom portion of the storage tank.
- These and other features, aspects and advantages of the present invention will become better understood with reference to the following description and appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
- A full and enabling disclosure of the present invention, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended figures, in which:
-
FIG. 1 provides a front elevation view of a water chiller apparatus according to an exemplary embodiment of the present subject matter; -
FIG. 2 provides a plan view of a water chiller apparatus according to an exemplary embodiment of the present subject matter; -
FIG. 3 provides a cross-sectional front view according to an exemplary water chiller apparatus embodiment; -
FIG. 4 provides a cross-sectional rear view of the exemplary water chiller apparatus ofFIG. 3 ; -
FIG. 5 is a close-up cross-sectional side view an exemplary embodiment of a tank used in a water chiller apparatus of the present disclosure; -
FIG. 6 is a close-up side view of an exemplary embodiment of the tank used in the exemplary water chiller apparatus ofFIG. 5 ; and -
FIG. 7 is an overhead cross-section view of another exemplary embodiment of a tank used in a water chiller apparatus of the present disclosure. - Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.
- Turning to the figures,
FIG. 1 provides a front elevation view of awater chiller apparatus 100 according to an exemplary embodiment of the present subject matter. Generally, thewater chiller apparatus 100 includes acasing 102 that extends between atop portion 104 and abottom portion 106 along a vertical direction V. Thus,water chiller apparatus 100 may be vertically oriented. Thewater chiller apparatus 100 can be leveled, e.g., such thatcasing 102 is plumb in the vertical direction V, in order to facilitate proper operation of thewater chiller apparatus 100. - As shown in
FIGS. 1 and 2 , thewater chiller apparatus 100 also includes aninlet conduit 108 and anoutlet conduit 110 that are both in fluid communication with astorage tank 112 within thecasing 102. As an example, warm water from a water source, e.g., a municipal water supply or a well, enters thewater chiller apparatus 100 through theinlet conduit 108 from atop portion 116 of the tank. From theinlet conduit 108, such warm water enters aninterior volume 114 of thetank 112 wherein the water is cooled to generate chilled water. Such chilled water exits thewater chiller apparatus 100 at theoutlet conduit 110 disposed at abottom portion 118 of thetank 112 and, e.g., is supplied to a medical device, drinking supply, or any other suitable feature. As will be understood by those skilled in the art and as used herein, the term “water” includes purified water and solutions or mixtures containing water and, e.g., elements (such as calcium, chlorine, and fluorine), salts, bacteria, nitrates, organics, and other chemical compounds or substances. Also, although water is described as an exemplary liquid, other suitable liquids may be supplied to thetank 112 and chilled by theapparatus 100. - The
tank 112, itself, includes asidewall 120 having aninner surface 122 defining theinterior volume 114 and configured for contact with the water to be chilled. Anouter surface 124 of thesidewall 120 is defined opposite theinner surface 122 and does not contact the chilled liquid. The top ortop portion 116 of thetank 112 and the bottom orbottom portion 118 of thetank 112 abut thesidewall 120 and enclose theinterior volume 114. - The
water chiller apparatus 100 includes a sealedrefrigerant cooling system 126 for cooling water stored or supplied to thetank 112. Generally, the sealedrefrigerant cooling system 126 is configured to circulate a refrigerant through or near thetank 112 to draw heat therefrom. Included in the sealedcooling system 126 are acompressor 128, acondenser 130, athrottling device 132, and anevaporator 134. As is generally understood, various conduits may be utilized to flow or direct refrigerant between the various components of the sealedsystem 126. Thecompressor 128,condenser 130, throttlingdevice 132, andevaporator 134 may each be placed in fluid communication such that refrigerant generally flows downstream from thecompressor 128 to the rest of the system before returning to thecompressor 128. - During operation, the
compressor 128 motivates the refrigerant through the sealedcooling system 126 and acts to compress the refrigerant through thecompressor 128, itself, increasing pressure and temperature of the refrigerant such that the refrigerant becomes a superheated vapor. As a superheated vapor, the refrigerant then passes to thecondenser 130, which may be positioned directly downstream from thecompressor 128. Within thecondenser 130, the refrigerant is cooled as heat is drawn therefrom. The refrigerant subsequently exits thecondenser 130 as a saturated liquid and/or high quality liquid vapor mixture. Afluid filter 136 may be provided downstream of thecondenser 130 to draw excessive moisture from the saturated liquid and/or high quality liquid vapor mixture. This high quality/saturated liquid vapor mixture then travels through thethrottling device 132, which is configured for regulating a flow rate of refrigerant therethrough. Thethrottling device 132 may generally expand the refrigerant, lowering the refrigerant's pressure and temperature. As a result, a cooled form of the refrigerant passes to theevaporator 134. While passing through theevaporator 134, the cooled refrigerant absorbs heat transferred to thestorage tank 112 from the water therein. Refrigerant ideally exits theevaporator 134 in a gasified vapor form before passing back to thecompressor 128. Anaccumulator 138 is provided in some embodiments and may be configured to maintain gasification of the fluid flow as the refrigerant passes from theevaporator 134 to thecompressor 128. Upon the refrigerant reaching thecompressor 128, the cycle repeats. - One or more
tank temperature sensors 140 may be included and configured for measuring a temperature of water within theinterior volume 114 of thestorage tank 112. Thetank temperature sensor 140 may be positioned at any suitable location within or on thestorage tank 112. For example, thetank temperature sensor 140 may be positioned within theinterior volume 114 of thestorage tank 112 or disposed on thetank sidewall 120. Thetank temperature sensor 140 may, moreover, be configured in operable communication with thecompressor 128 to indicate when thecompressor 128 should be activated to circulate refrigerant. Such embodiments may provide indicate when additional or decreased cooling is needed. In some embodiments, multipletank temperature sensors 140 may be included to provide temperature measurements at multiple positions of thetank 112. - A
controller 142 may be included and configured to control or regulate thewater chiller apparatus 100 and/or sealedcooling system 126.Controller 142 may be, for example, in operable communication with the sealed system 126 (such as thecompressor 128, and/or other components thereof), and/ortemperature sensor 140. Thus,controller 142 can selectively activatesystem 126 in order to cool water within theinterior volume 114 of thestorage tank 112. -
Controller 142 includes memory and one or more processing devices such as microprocessors, CPUs or the like, such as general or special purpose microprocessors operable to execute programming instructions or micro-control code associated with operation of thewater chiller apparatus 100. The memory can represent random access memory such as DRAM, or read only memory such as ROM or FLASH. The processor executes programming instructions stored in the memory. The memory can be a separate component from the processor or can be included onboard within the processor. Alternatively,controller 142 may be constructed without using a microprocessor, e.g., using a combination of discrete analog and/or digital logic circuitry (such as switches, amplifiers, integrators, comparators, flip-flops, AND gates, and the like) to perform control functionality instead of relying upon software. - As illustrated in
FIGS. 3 and 4 , one or more features of thewater chiller apparatus 100 may be attached to thetank 112 and mounted within the casing. Specific embodiments of theapparatus 100 include asupport plate 144 disposed over thestorage tank 112, to which one or more sealed cooling system components may be mounted. For example, thecompressor 128 of an exemplary embodiment is mounted to thesupport plate 144 and selectively positioned above thestorage tank 112. - In optional or additional embodiments, the
condenser 130 may be mounted to thesupport plate 144 above thetank 112. Thecondenser 130 may, moreover, include one ormore air handler 160. Theair handler 160 may be positioned within casing on or adjacent a condenser body 162. Thus, when activated, theair handler 160 may direct a flow of air towards or across thecondenser 130, and assist with drawing heat from the refrigerant within the condenser body 162. Theair handler 160 may be any suitable type of air handler, such as an axial or centrifugal fan. The condenser body 162 may be any suitable conduit structure for directing the refrigerant therethrough. One or more heat exchange fins may extend therefrom and assist with heat transfer between the air and refrigerant. -
Throttling device 132 may be disposed above thetank 112 adjacent to thecondenser 130. Thethrottling device 132, itself, may be any suitable components for generally expanding the refrigerant. For example, in some exemplary embodiments, throttlingdevice 132 may be a Joule-Thomson expansion valve, also known as a “J-T valve.” In other exemplary embodiments, throttlingdevice 132 may be an ejector. In still other exemplary embodiments, a capillary tube, fixed orifice, or other suitable apparatus may be utilized as throttlingdevice 132. In certain exemplary embodiments, throttlingdevice 132 may be an electronic expansion valve (EEV). - As shown, the
evaporator 134 may include anegative pitch coil 166 positioned generally downstream of thecondenser 130 and/or directly downstream of thethrottling device 132. As illustrated, thecoil 166 of some embodiments is wrapped about theouter surface 124 of thesidewall 120, in direct contact thereto. In one exemplary embodiment, thecoil 166 is affixed to thestorage tank 112 using a thermal paste that improves heat transfer. In another embodiment, thecoil 166 is welded to thetank 112. As shown in the exemplary embodiment inFIGS. 3 and 4 , thecoil 166 may run along theouter surface 124 of the cylindrically-shapedsidewall 120 of thetank 112 in a helical pattern in the radial direction R. Moreover, thenegative pitch coil 166 may be configured to direct fluid flow substantially downward in the vertical direction V. In such embodiments, refrigerant flow is directed from a position near atop portion 116 of thestorage tank 112 to a position near abottom portion 118 of thestorage tank 112. - In certain embodiments, the
coil 166 has a negative pitch angle θ defined relative to the top 116 of thetank 112. As result, thenegative pitch coil 166 may have anentry port 168 disposed vertically higher than anexit port 170 when thetank 112 is vertically positioned. In an additional or alternative embodiment, thenegative pitch coil 166 has a negative pitch angle θ relative to thesupport plate 144 of thewater chiller apparatus 100. In such embodiments, thesupport plate 144 of thewater chiller apparatus 100 may define a horizontal plane which thenegative pitch coil 166 extends away from. Thenegative pitch coil 166 may, advantageously, aid heat flow within thestorage tank 112. Specifically, thenegative pitch coil 166 is configured to conduct heat at a higher rate near atop portion 116 of thetank 112 than at abottom portion 118 of thetank 112. The disparate heat transfers may thereby generate a fluid flow of water within thestorage tank 112. Chilled water from thetop portion 116 of theinterior volume 114 can flow downward toward thebottom portion 118 of theinterior volume 114 as relatively warm water flows upwards from thebottom portion 118. - As shown in
FIGS. 3 and 4 , thestorage tank 112 may be positioned within anouter jacket 172 of thecasing 102. In such embodiments, theouter jacket 172 surrounds thetank 112 to create anannular space 174 between thetank 112 andjacket 172.Insulation 176 may be provided withinannular space 174 to reduce the amount of heat transfer from the environment. As illustrated, thejacket 172 andinsulation 176 may further enclose thenegative pitch coil 166, thereby increasing the heat absorbed from thetank 112 to thecoil 166.Insulation 176 is provided as foamed-in insulation for some embodiments, but other materials may be used as well. - In certain embodiments of the
apparatus 100, it is desirable to increase the surface area for contact between thenegative pitch coil 166 and thestorage tank 112. Such an increase will provide increased heat transfer between thecoil 166 and thetank 112 for a given length of thecoil 166. Moreover, it can decrease the overall length of coil required to transfer heat from the tank 112 (and water therein) to thecoil 166. In additional or alternative embodiments, it may be desirable to increase the surface area and shape of the tankinner surface 122 in contact with water within theinterior volume 114. The increased surface area and changes in shape advantageously improve the contact area with the water and alter the film coefficient of convective heat transfer from the tankinner surface 122 to the water. - Accordingly, the
storage tank 112 of some embodiments includes one ormore groove 178 formed along theouter surface 124 of the cylindrically-shapedsidewall 120 along an axial direction A, as shown inFIGS. 5 and 6 . For example, a single continuouscircumferential groove 178 may be formed about thesidewall 120 in a helical pattern matched to that of thenegative pitch coil 166. As a result, when thewater chiller apparatus 100 is positioned vertically, the axial direction may be parallel to the vertical direction V. - As further shown in
FIGS. 5 and 6 , one ormore coil 166 from thecooling system 126 may fit intogroove 178, thereby increased the surface area for contact between thesidewall 120 and thecoil 166 over a given length of coil. Thegroove 178 also appears on theinner surface 122 of thesidewall 120 and provides increased area for heat transfer with water within thetank 112. Additionally, for some exemplary embodiments, thegroove 178 has a circularly-shapedsurface 179 to accommodate a circular profile of thecoil 166. Specifically, thegroove 178 may accommodate an outer coil diameter Di defined by the circular profile of thecoil 166. However, in other embodiments thegroove 178 may have a surface that is e.g., U-shaped, V-shaped, or square shaped. - The
groove 178 in some embodiments has a depth De in radial direction R that is less than the outer diameter Di of thecoil 166. In such embodiments, thecoil 166 extends beyond theouter surface 124 of cylindrically-shapedsidewall 120 of thestorage tank 112. Alternatively, thegroove 178 may have a depth De that is greater than the outer coil diameter Di of thecoil 166. Thegroove 178 may also have a width along the axial direction, A, approximately equal to the outer diameter Di of thecoil 166. It is envisioned that other configurations may be used as well. - In another exemplary embodiment, the
storage tank 112 could be formed out of a process such that the interior surface of thetank 112 has a plurality of internal heat transfer features—e.g., ribs, fins, or the like—that project into thetank 112 and extend longitudinally along the axial direction A of thetank 112. For example,FIG. 7 provides a cross-sectional view of another exemplary embodiment of thetank 112 where a plurality of T-shapedfins 180 are spaced apart about the circumferential direction C of thetank 112 and extend along radial direction R into thetank 112.Fins 180 also extend longitudinally along the axial direction A of thetank 112.Fins 180 could be formed, for example, by welding or extruding thesidewall 120 withfins 180 in place. Internal features such asfins 180 can, advantageously, increase the rate of heat transfer from the water and improve the convective heat transfer film coefficient. - This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they include structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
Claims (20)
1. A chiller apparatus for cooling a liquid, comprising:
a storage tank for storing the liquid, the storage tank having a top and a bottom, the storage tank having an outer surface; and
a refrigerant cooling system, comprising
a compressor attached to the storage tank,
a condenser positioned downstream from the compressor to condense a refrigerant received therefrom, and
at least one evaporator positioned downstream of the condenser and wrapped about the outer surface of the storage tank, the evaporator including a negative pitch coil configured to direct refrigerant flow from a position near the top of the storage tank to a position near the bottom of the storage tank.
2. The chiller apparatus of claim 1 , further comprising further comprising a thermal paste affixing the negative pitch coil to the storage tank and enhancing heat transfer.
3. The chiller apparatus of claim 1 , wherein the storage tank includes an interior surface and a plurality of projections extending in a radial direction from the interior surface of said tank to provide additional surface area for heat transfer with the liquid contained in the storage tank.
4. The chiller apparatus of claim 1 , wherein the outer surface of the storage tank defines at least one circumferential groove, wherein the negative pitch coil is at least partially disposed in the circumferential groove.
5. The chiller apparatus of claim 4 , wherein the negative pitch coil includes a circular profile defining an outer coil diameter.
6. The chiller apparatus of claim 5 , wherein the groove includes a radial depth that is less than the outer coil diameter, and wherein the negative pitch coil extends above outer surface of the storage tank.
7. The chiller apparatus of claim 1 , further comprising an outer jacket surrounding the outer surface of the storage tank and enclosing the negative pitch coil, the outer jacket defining an annular cavity between the outer surface of the storage tank and the outer jacket.
8. The chiller apparatus of claim 7 , further comprising an insulation material disposed within the annular cavity.
9. The chiller apparatus of claim 1 , wherein the negative pitch coil is wrapped around the storage tank in a helical pattern having a negative pitch angle relative to the top of the storage tank.
10. A chiller apparatus, comprising:
a storage tank defining an interior volume for the receipt of liquid to be chilled, the storage tank including a sidewall having an inner surface defining the interior volume and configured for contact with the liquid, the storage tank having an outer surface not contacting the liquid, the storage tank having a bottom portion and a top portion;
a support plate disposed over the storage tank; and
a sealed cooling system for circulating a refrigerant and comprising
a compressor mounted to the support plate for compressing the refrigerant,
a condenser positioned downstream from the compressor on the support plate to condense the refrigerant received from the compressor, and
at least one evaporator positioned downstream of the condenser and wrapped about the outer surface of the sidewall, the evaporator including a negative pitch coil configured to direct a refrigerant flow from the top portion of the storage tank toward the bottom portion of the storage tank.
11. The chiller apparatus of claim 10 , further comprising a thermal paste affixing the negative pitch coil to the storage tank and enhancing heat transfer.
12. The chiller apparatus of claim 10 , wherein the inner surface of the sidewall includes plurality of projections extending radially inward to provide additional surface area for heat transfer with the liquid contained in the storage tank.
13. The chiller apparatus of claim 10 , wherein the outer surface of the storage tank defines at least one circumferential groove, wherein the negative pitch coil is at least partially disposed in the circumferential groove.
14. The chiller apparatus of claim 13 , wherein the negative pitch coil includes a circular profile defining an outer coil diameter.
15. The chiller apparatus of claim 14 , wherein the groove includes a radial depth that is less than the outer coil diameter, and wherein the negative pitch coil extends above the outer surface of the storage tank.
16. The chiller apparatus of claim 10 , further comprising an outer jacket surrounding the negative pitch coil and the sidewall of the storage tank, the outer jacket defining an annular cavity between the sidewall of the storage tank and the outer jacket.
17. The chiller apparatus of claim 16 , further comprising an insulation material disposed within the annular cavity.
18. The chiller apparatus of claim 10 , wherein the negative pitch coil is wrapped around the storage tank in a helical pattern having a negative pitch angle relative to the support plate.
19. The chiller apparatus of claim 10 , further comprising a temperature sensor mounted to the storage tank in operable communication with the compressor.
20. The chiller apparatus of claim 10 , wherein the storage tank includes an outlet conduit extending from the interior volume at the bottom portion of the storage tank.
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US14/950,314 US20170146268A1 (en) | 2015-11-24 | 2015-11-24 | Water Chiller Apparatus |
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US14/950,314 US20170146268A1 (en) | 2015-11-24 | 2015-11-24 | Water Chiller Apparatus |
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US20170146268A1 true US20170146268A1 (en) | 2017-05-25 |
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US14/950,314 Abandoned US20170146268A1 (en) | 2015-11-24 | 2015-11-24 | Water Chiller Apparatus |
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Cited By (2)
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USD844768S1 (en) * | 2017-09-06 | 2019-04-02 | Rheem Manufacturing Company | Water heater top cap assembly |
US20190120529A1 (en) * | 2016-06-06 | 2019-04-25 | Societe Francaise De Detecteurs Infrarouges- Sofradir | Cryogenic device with compact exchanger |
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2015
- 2015-11-24 US US14/950,314 patent/US20170146268A1/en not_active Abandoned
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US7124602B2 (en) * | 2003-01-29 | 2006-10-24 | Lg Electronics Inc. | Direct cooling type refrigerator and evaporating pipe fixing method in the refrigerator |
US20050269067A1 (en) * | 2004-06-02 | 2005-12-08 | Cowans Kenneth W | Heat exchanger and temperature control unit |
US20080120986A1 (en) * | 2006-11-29 | 2008-05-29 | Abdullah Ahmad Al-Hashash | Water supply system |
US20110058795A1 (en) * | 2009-09-08 | 2011-03-10 | Rheem Manufacturing Company | Heat pump water heater and associated control system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20190120529A1 (en) * | 2016-06-06 | 2019-04-25 | Societe Francaise De Detecteurs Infrarouges- Sofradir | Cryogenic device with compact exchanger |
USD844768S1 (en) * | 2017-09-06 | 2019-04-02 | Rheem Manufacturing Company | Water heater top cap assembly |
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Owner name: GENERAL ELECTRIC COMPANY, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHAFFER, TIMOTHY SCOTT;AGUILAR, NOEL;TSAI, CRAIG LUNG-PEI;AND OTHERS;SIGNING DATES FROM 20151116 TO 20151123;REEL/FRAME:037133/0784 |
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Owner name: HAIER US APPLIANCE SOLUTIONS, INC., DELAWARE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GENERAL ELECTRIC COMPANY;REEL/FRAME:038964/0615 Effective date: 20160606 |
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