CN-224201893-U - Column type expansion tank suitable for positive displacement heat pump water heater

Abstract

The utility model provides a column type expansion water tank suitable for a volumetric heat pump water heater, wherein a column type shell formed by a main shell and a mounting chassis is internally provided with a column type capsule so as to form a water accommodating cavity and an air accommodating cavity of the expansion water tank, wherein the bottom end of the main shell is provided with a mounting plate and a mounting port, the top end of the main shell is provided with a gas conveying port connected with a gas inlet pipe, the ratio of the whole cross section radius to the height of the shell is 9:160, the mounting chassis is provided with a transfusion port, the column type capsule is provided with a water inlet connected with a liquid inlet pipe and a fixing coating film, the expansion water tank in the scheme can be embedded into a redundant space generated by inscribing a support arranged outside the column type water tank and the column type water tank, and the quantity of the expansion water tank can be flexibly adjusted according to requirements, thereby the column type water tank and the expansion water tank can be integrated into a combined structure, the tightness of the water accommodating cavity and the air accommodating cavity can be simultaneously satisfied with the working space requirements of the expansion water tank, the longitudinal space can be fully utilized, the whole volume can be reduced, the transportation cost can be reduced, and the product competitiveness can be increased.

Inventors

• ZHOU XIANGLEI
• YANG LINPENG

Assignees

• 广州耐谊通用设备有限公司

Dates

Publication Date

20260505

Application Date

20250606

Claims (10)

1. 1. The cylindrical expansion water tank is suitable for a volumetric heat pump water heater and is arranged around a cylindrical water storage tank of the volumetric heat pump water heater, and is characterized by comprising a cylindrical shell, a cylindrical capsule, a liquid inlet pipe and an air inlet pipe, wherein the cylindrical capsule is arranged in the cylindrical shell, a space in the cylindrical capsule is arranged as a water accommodating cavity, a space between the cylindrical capsule and the cylindrical shell is arranged as an air accommodating cavity, the liquid inlet pipe is connected with the water accommodating cavity, the air inlet pipe is connected with the air accommodating cavity, the cylindrical shell comprises a main shell and a mounting chassis, the whole main shell is of an elongated shape, the ratio of the radius of the cross section to the height of the shell is at least 9:160, the bottom end of the cylindrical shell is provided with a mounting plate and a mounting port arranged on the mounting plate, the top end of the cylindrical capsule is of an arc-shaped outwards protruding shape, the mounting chassis is covered and fixed on the bottom end of the main shell, a water inlet is arranged at the position corresponding to the mounting port, one end of the cylindrical capsule is provided with water inlets, the water inlets are symmetrically arranged on two groups of the water inlets, the water inlets penetrate through the mounting plate and the water inlet pipe and the liquid inlet pipe and the mounting plate are fixedly connected.
2. 2. The column expansion tank for a volumetric heat pump water heater according to claim 1, wherein the mounting chassis is provided with fastening assemblies, and the fastening assemblies are distributed in a circular array with the center of the mounting chassis as the center.
3. 3. A column expansion tank for a volumetric heat pump water heater according to claim 2, wherein said fastening assembly comprises at least five sets of screws and nuts, each set of screws having a bottom portion secured to said mounting plate through said mounting plate, a top portion disposed outside said mounting plate, and said nuts secured to said screw top portion.
4. 4. A column expansion tank for a volumetric heat pump water heater as defined in claim 1, wherein said cylindrical capsule body is parallel to said column housing.
5. 5. A column expansion tank for a positive displacement heat pump water heater as claimed in claim 1, wherein said mounting base radius is the same as said main housing cross-sectional radius.
6. 6. The column expansion tank of claim 1, wherein said tubular bladder and said fixed coating are made of elastomeric materials.
7. 7. A column expansion tank for a volumetric heat pump water heater as defined in claim 1, wherein said water inlet is provided with a baffle.
8. 8. The column expansion tank for a volumetric heat pump water heater as defined in claim 1, wherein said air inlet tube is provided with a one-way valve and an air inlet cover is provided on the outside thereof.
9. 9. A column expansion tank for a positive displacement heat pump water heater as claimed in claim 1, wherein the outer surface of the inlet tube is provided with mounting threads.
10. 10. A column expansion tank for a volumetric heat pump water heater as defined in claim 1, wherein said mounting base is provided as a flange.

Description

Column type expansion tank suitable for positive displacement heat pump water heater Technical Field The utility model belongs to the technical field of expansion water tanks, and particularly relates to a column type expansion water tank suitable for a volumetric heat pump water heater. Background The expansion water tank is an important part in a wall-mounted boiler and a heating ventilation air conditioning system, and plays roles of water containing and constant pressure in the heating system, because of the roles of thermal expansion and cold contraction of the water in the heating system, the water volume in the heating system is increased, when the expansion amount of the water containing the water is not contained, the water pressure in the heating system is increased, the normal operation is influenced, at the moment, the expansion water tank contains the water expansion amount of the system, the fluctuation of the water pressure caused by the expansion of the water can be reduced, when the system leaks water or the system cools due to a certain reason, the expansion water tank supplements water for the system, therefore, the point of connecting the expansion water tank and the system is always used as a constant pressure point or a constant pressure point of the system, the system is further ensured not to be emptied, overflowed and overpressured, the safety and reliability of the system are improved, meanwhile, the expansion water tank is always connected to the inlet of the water pump, the water pump is protected to a certain extent through the constant pressure effect of the expansion water pump, the expansion water tank needs to be provided with an extra installation space in the heating system, the working space is required to be enough, and the working space requirement of the expansion water tank is large enough, so that the system occupies more building area, the whole heating system is high in the transportation and the whole heating system and has low installation cost. Aiming at the existing phenomena and problems, intensive research is conducted, a column type expansion water tank suitable for a volumetric heat pump water heater is provided, a shell with a special shape is matched with an internal special cylindrical capsule, the longitudinal space is fully utilized to reduce the whole volume of a product, the working space of the expansion water tank is ensured, the transportation cost is reduced, and the product competitiveness is increased. Disclosure of utility model Aiming at the prior problems, the utility model provides a column type expansion water tank suitable for a volumetric heat pump water heater, which is provided with a shell with a special shape and matched with an internal special cylindrical capsule, so that the shell can be completely embedded and installed in a redundant space generated by inscribing a cylindrical water storage tank and a bracket for placing the cylindrical water storage tank in a heat pump product, and the longitudinal space is fully utilized to reduce the whole volume of the product, ensure the working space of the expansion water tank, reduce the transportation cost and increase the competitiveness of the product. The utility model provides a column type expansion water tank suitable for a volumetric heat pump water heater, which is arranged around a column water storage tank of the volumetric heat pump water heater and comprises a column type shell, a column type capsule, a liquid inlet pipe and an air inlet pipe, wherein the column type capsule is arranged in the column type shell, a space in the column type capsule is arranged as a water accommodating cavity, a space between the column type shell and the column type capsule is arranged as an air accommodating cavity, the liquid inlet pipe is connected with the water accommodating cavity, the air inlet pipe is connected with the air accommodating cavity, the column type shell comprises a main shell and a mounting chassis, the whole main shell is slender, the ratio of the radius of the cross section to the height of the shell is at least 9:160, the bottom end of the column type shell is provided with a mounting plate and a mounting opening arranged on the mounting plate, the top end of the column type capsule is convex outwards and is provided with an air inlet opening connected with the air inlet pipe, the mounting chassis is covered and fixed on the bottom end of the main shell, one end of the column type capsule is provided with a water inlet, the two water inlet membranes are symmetrically arranged on the two sides of the water inlet and pass through the mounting chassis and penetrate through the mounting plate and are fixedly arranged between the water inlet pipe and the liquid inlet pipe. Preferably, the mounting chassis is provided with fastening components, and the fastening components are distributed in a circular array by taking the center of the mounting chassis as the center. Prefera